Annotation of src/usr.bin/make/job.c, Revision 1.34
1.34 ! christos 1: /* $NetBSD: job.c,v 1.33 2000/04/20 11:23:25 sjg Exp $ */
1.10 christos 2:
1.1 cgd 3: /*
4: * Copyright (c) 1988, 1989, 1990 The Regents of the University of California.
5: * Copyright (c) 1988, 1989 by Adam de Boor
6: * Copyright (c) 1989 by Berkeley Softworks
7: * All rights reserved.
8: *
9: * This code is derived from software contributed to Berkeley by
10: * Adam de Boor.
11: *
12: * Redistribution and use in source and binary forms, with or without
13: * modification, are permitted provided that the following conditions
14: * are met:
15: * 1. Redistributions of source code must retain the above copyright
16: * notice, this list of conditions and the following disclaimer.
17: * 2. Redistributions in binary form must reproduce the above copyright
18: * notice, this list of conditions and the following disclaimer in the
19: * documentation and/or other materials provided with the distribution.
20: * 3. All advertising materials mentioning features or use of this software
21: * must display the following acknowledgement:
22: * This product includes software developed by the University of
23: * California, Berkeley and its contributors.
24: * 4. Neither the name of the University nor the names of its contributors
25: * may be used to endorse or promote products derived from this software
26: * without specific prior written permission.
27: *
28: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
29: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
30: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
31: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
32: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
33: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
34: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
35: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
36: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
37: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
38: * SUCH DAMAGE.
39: */
40:
1.21 lukem 41: #ifdef MAKE_BOOTSTRAP
1.34 ! christos 42: static char rcsid[] = "$NetBSD: job.c,v 1.33 2000/04/20 11:23:25 sjg Exp $";
1.21 lukem 43: #else
1.19 christos 44: #include <sys/cdefs.h>
1.1 cgd 45: #ifndef lint
1.10 christos 46: #if 0
1.16 christos 47: static char sccsid[] = "@(#)job.c 8.2 (Berkeley) 3/19/94";
1.10 christos 48: #else
1.34 ! christos 49: __RCSID("$NetBSD: job.c,v 1.33 2000/04/20 11:23:25 sjg Exp $");
1.10 christos 50: #endif
1.1 cgd 51: #endif /* not lint */
1.21 lukem 52: #endif
1.1 cgd 53:
54: /*-
55: * job.c --
56: * handle the creation etc. of our child processes.
57: *
58: * Interface:
59: * Job_Make Start the creation of the given target.
60: *
61: * Job_CatchChildren Check for and handle the termination of any
62: * children. This must be called reasonably
63: * frequently to keep the whole make going at
64: * a decent clip, since job table entries aren't
65: * removed until their process is caught this way.
66: * Its single argument is TRUE if the function
67: * should block waiting for a child to terminate.
68: *
69: * Job_CatchOutput Print any output our children have produced.
70: * Should also be called fairly frequently to
71: * keep the user informed of what's going on.
72: * If no output is waiting, it will block for
73: * a time given by the SEL_* constants, below,
74: * or until output is ready.
75: *
76: * Job_Init Called to intialize this module. in addition,
77: * any commands attached to the .BEGIN target
78: * are executed before this function returns.
79: * Hence, the makefile must have been parsed
80: * before this function is called.
81: *
1.22 christos 82: * Job_End Cleanup any memory used.
83: *
1.1 cgd 84: * Job_Full Return TRUE if the job table is filled.
85: *
86: * Job_Empty Return TRUE if the job table is completely
87: * empty.
88: *
89: * Job_ParseShell Given the line following a .SHELL target, parse
90: * the line as a shell specification. Returns
91: * FAILURE if the spec was incorrect.
92: *
1.22 christos 93: * Job_Finish Perform any final processing which needs doing.
1.1 cgd 94: * This includes the execution of any commands
95: * which have been/were attached to the .END
96: * target. It should only be called when the
97: * job table is empty.
98: *
99: * Job_AbortAll Abort all currently running jobs. It doesn't
100: * handle output or do anything for the jobs,
101: * just kills them. It should only be called in
102: * an emergency, as it were.
103: *
104: * Job_CheckCommands Verify that the commands for a target are
105: * ok. Provide them if necessary and possible.
106: *
107: * Job_Touch Update a target without really updating it.
108: *
109: * Job_Wait Wait for all currently-running jobs to finish.
110: */
111:
1.5 cgd 112: #include <sys/types.h>
1.1 cgd 113: #include <sys/stat.h>
114: #include <sys/file.h>
115: #include <sys/time.h>
116: #include <sys/wait.h>
117: #include <fcntl.h>
118: #include <errno.h>
1.14 christos 119: #include <utime.h>
1.1 cgd 120: #include <stdio.h>
121: #include <string.h>
1.5 cgd 122: #include <signal.h>
123: #include "make.h"
124: #include "hash.h"
125: #include "dir.h"
1.1 cgd 126: #include "job.h"
127: #include "pathnames.h"
1.12 christos 128: #ifdef REMOTE
129: #include "rmt.h"
1.16 christos 130: # define STATIC
1.12 christos 131: #else
132: # define STATIC static
133: #endif
1.1 cgd 134:
135: /*
1.16 christos 136: * error handling variables
1.1 cgd 137: */
1.5 cgd 138: static int errors = 0; /* number of errors reported */
139: static int aborting = 0; /* why is the make aborting? */
1.1 cgd 140: #define ABORT_ERROR 1 /* Because of an error */
141: #define ABORT_INTERRUPT 2 /* Because it was interrupted */
142: #define ABORT_WAIT 3 /* Waiting for jobs to finish */
143:
1.16 christos 144: /*
1.12 christos 145: * XXX: Avoid SunOS bug... FILENO() is fp->_file, and file
146: * is a char! So when we go above 127 we turn negative!
147: */
148: #define FILENO(a) ((unsigned) fileno(a))
1.1 cgd 149:
150: /*
151: * post-make command processing. The node postCommands is really just the
152: * .END target but we keep it around to avoid having to search for it
153: * all the time.
154: */
155: static GNode *postCommands; /* node containing commands to execute when
156: * everything else is done */
157: static int numCommands; /* The number of commands actually printed
158: * for a target. Should this number be
159: * 0, no shell will be executed. */
160:
161: /*
162: * Return values from JobStart.
163: */
164: #define JOB_RUNNING 0 /* Job is running */
165: #define JOB_ERROR 1 /* Error in starting the job */
166: #define JOB_FINISHED 2 /* The job is already finished */
167: #define JOB_STOPPED 3 /* The job is stopped */
168:
169:
170:
171: /*
172: * Descriptions for various shells.
173: */
174: static Shell shells[] = {
175: /*
176: * CSH description. The csh can do echo control by playing
177: * with the setting of the 'echo' shell variable. Sadly,
178: * however, it is unable to do error control nicely.
179: */
180: {
181: "csh",
182: TRUE, "unset verbose", "set verbose", "unset verbose", 10,
183: FALSE, "echo \"%s\"\n", "csh -c \"%s || exit 0\"",
184: "v", "e",
185: },
186: /*
187: * SH description. Echo control is also possible and, under
188: * sun UNIX anyway, one can even control error checking.
189: */
190: {
191: "sh",
192: TRUE, "set -", "set -v", "set -", 5,
1.12 christos 193: TRUE, "set -e", "set +e",
194: #ifdef OLDBOURNESHELL
1.1 cgd 195: FALSE, "echo \"%s\"\n", "sh -c '%s || exit 0'\n",
1.12 christos 196: #endif
1.27 christos 197: #ifdef __NetBSD__
198: "vq",
199: #else
200: "v",
201: #endif
202: "e",
1.1 cgd 203: },
204: /*
205: * UNKNOWN.
206: */
207: {
1.12 christos 208: (char *) 0,
209: FALSE, (char *) 0, (char *) 0, (char *) 0, 0,
210: FALSE, (char *) 0, (char *) 0,
211: (char *) 0, (char *) 0,
1.1 cgd 212: }
213: };
1.5 cgd 214: static Shell *commandShell = &shells[DEFSHELL];/* this is the shell to
1.1 cgd 215: * which we pass all
216: * commands in the Makefile.
217: * It is set by the
218: * Job_ParseShell function */
1.12 christos 219: static char *shellPath = NULL, /* full pathname of
1.1 cgd 220: * executable image */
1.22 christos 221: *shellName = NULL, /* last component of shell */
222: *shellArgv = NULL; /* Custom shell args */
1.1 cgd 223:
224:
225: static int maxJobs; /* The most children we can run at once */
226: static int maxLocal; /* The most local ones we can have */
1.12 christos 227: STATIC int nJobs; /* The number of children currently running */
228: STATIC int nLocal; /* The number of local children */
229: STATIC Lst jobs; /* The structures that describe them */
230: STATIC Boolean jobFull; /* Flag to tell when the job table is full. It
1.1 cgd 231: * is set TRUE when (1) the total number of
232: * running jobs equals the maximum allowed or
233: * (2) a job can only be run locally, but
234: * nLocal equals maxLocal */
235: #ifndef RMT_WILL_WATCH
236: static fd_set outputs; /* Set of descriptors of pipes connected to
237: * the output channels of children */
238: #endif
239:
1.12 christos 240: STATIC GNode *lastNode; /* The node for which output was most recently
1.1 cgd 241: * produced. */
1.12 christos 242: STATIC char *targFmt; /* Format string to use to head output from a
1.1 cgd 243: * job when it's not the most-recent job heard
244: * from */
1.12 christos 245:
246: #ifdef REMOTE
247: # define TARG_FMT "--- %s at %s ---\n" /* Default format */
248: # define MESSAGE(fp, gn) \
1.34 ! christos 249: (void) fprintf(fp, targFmt, gn->name, gn->rem.hname)
1.12 christos 250: #else
251: # define TARG_FMT "--- %s ---\n" /* Default format */
252: # define MESSAGE(fp, gn) \
1.34 ! christos 253: (void) fprintf(fp, targFmt, gn->name)
1.12 christos 254: #endif
1.1 cgd 255:
256: /*
257: * When JobStart attempts to run a job remotely but can't, and isn't allowed
258: * to run the job locally, or when Job_CatchChildren detects a job that has
259: * been migrated home, the job is placed on the stoppedJobs queue to be run
1.16 christos 260: * when the next job finishes.
1.1 cgd 261: */
1.12 christos 262: STATIC Lst stoppedJobs; /* Lst of Job structures describing
1.1 cgd 263: * jobs that were stopped due to concurrency
264: * limits or migration home */
265:
266:
1.5 cgd 267: #if defined(USE_PGRP) && defined(SYSV)
1.26 christos 268: # define KILL(pid, sig) kill(-(pid), (sig))
1.5 cgd 269: #else
1.1 cgd 270: # if defined(USE_PGRP)
1.12 christos 271: # define KILL(pid, sig) killpg((pid), (sig))
1.1 cgd 272: # else
1.12 christos 273: # define KILL(pid, sig) kill((pid), (sig))
1.1 cgd 274: # endif
1.5 cgd 275: #endif
1.1 cgd 276:
1.16 christos 277: /*
1.13 christos 278: * Grmpf... There is no way to set bits of the wait structure
279: * anymore with the stupid W*() macros. I liked the union wait
280: * stuff much more. So, we devise our own macros... This is
281: * really ugly, use dramamine sparingly. You have been warned.
282: */
1.28 christos 283: #ifndef W_STOPCODE
284: #define W_STOPCODE(sig) (((sig) << 8) | 0177)
285: #endif
286: #ifndef W_EXITCODE
287: #define W_EXITCODE(ret, sig) ((ret << 8) | (sig))
288: #endif
1.13 christos 289:
1.6 jtc 290: static int JobCondPassSig __P((ClientData, ClientData));
1.5 cgd 291: static void JobPassSig __P((int));
1.6 jtc 292: static int JobCmpPid __P((ClientData, ClientData));
293: static int JobPrintCommand __P((ClientData, ClientData));
294: static int JobSaveCommand __P((ClientData, ClientData));
1.12 christos 295: static void JobClose __P((Job *));
296: #ifdef REMOTE
297: static int JobCmpRmtID __P((Job *, int));
298: # ifdef RMT_WILL_WATCH
299: static void JobLocalInput __P((int, Job *));
300: # endif
301: #else
1.13 christos 302: static void JobFinish __P((Job *, int *));
1.5 cgd 303: static void JobExec __P((Job *, char **));
1.12 christos 304: #endif
1.5 cgd 305: static void JobMakeArgv __P((Job *, char **));
306: static void JobRestart __P((Job *));
307: static int JobStart __P((GNode *, int, Job *));
1.16 christos 308: static char *JobOutput __P((Job *, char *, char *, int));
1.5 cgd 309: static void JobDoOutput __P((Job *, Boolean));
310: static Shell *JobMatchShell __P((char *));
1.12 christos 311: static void JobInterrupt __P((int, int));
312: static void JobRestartJobs __P((void));
1.1 cgd 313:
314: /*-
315: *-----------------------------------------------------------------------
316: * JobCondPassSig --
317: * Pass a signal to a job if the job is remote or if USE_PGRP
318: * is defined.
319: *
320: * Results:
321: * === 0
322: *
323: * Side Effects:
324: * None, except the job may bite it.
325: *
326: *-----------------------------------------------------------------------
327: */
328: static int
1.6 jtc 329: JobCondPassSig(jobp, signop)
330: ClientData jobp; /* Job to biff */
331: ClientData signop; /* Signal to send it */
1.1 cgd 332: {
1.6 jtc 333: Job *job = (Job *) jobp;
334: int signo = *(int *) signop;
1.1 cgd 335: #ifdef RMT_WANTS_SIGNALS
336: if (job->flags & JOB_REMOTE) {
1.12 christos 337: (void) Rmt_Signal(job, signo);
1.1 cgd 338: } else {
339: KILL(job->pid, signo);
340: }
341: #else
342: /*
343: * Assume that sending the signal to job->pid will signal any remote
344: * job as well.
345: */
1.12 christos 346: if (DEBUG(JOB)) {
1.16 christos 347: (void) fprintf(stdout,
1.12 christos 348: "JobCondPassSig passing signal %d to child %d.\n",
349: signo, job->pid);
350: (void) fflush(stdout);
351: }
1.1 cgd 352: KILL(job->pid, signo);
353: #endif
1.12 christos 354: return 0;
1.1 cgd 355: }
356:
357: /*-
358: *-----------------------------------------------------------------------
359: * JobPassSig --
360: * Pass a signal on to all remote jobs and to all local jobs if
361: * USE_PGRP is defined, then die ourselves.
362: *
363: * Results:
364: * None.
365: *
366: * Side Effects:
367: * We die by the same signal.
1.16 christos 368: *
1.1 cgd 369: *-----------------------------------------------------------------------
370: */
371: static void
372: JobPassSig(signo)
373: int signo; /* The signal number we've received */
374: {
1.13 christos 375: sigset_t nmask, omask;
1.14 christos 376: struct sigaction act;
1.28 christos 377: int sigcont;
1.16 christos 378:
1.12 christos 379: if (DEBUG(JOB)) {
380: (void) fprintf(stdout, "JobPassSig(%d) called.\n", signo);
381: (void) fflush(stdout);
382: }
383: Lst_ForEach(jobs, JobCondPassSig, (ClientData) &signo);
1.1 cgd 384:
385: /*
386: * Deal with proper cleanup based on the signal received. We only run
387: * the .INTERRUPT target if the signal was in fact an interrupt. The other
388: * three termination signals are more of a "get out *now*" command.
389: */
390: if (signo == SIGINT) {
1.12 christos 391: JobInterrupt(TRUE, signo);
1.1 cgd 392: } else if ((signo == SIGHUP) || (signo == SIGTERM) || (signo == SIGQUIT)) {
1.12 christos 393: JobInterrupt(FALSE, signo);
1.1 cgd 394: }
1.16 christos 395:
1.1 cgd 396: /*
397: * Leave gracefully if SIGQUIT, rather than core dumping.
398: */
399: if (signo == SIGQUIT) {
1.5 cgd 400: Finish(0);
1.1 cgd 401: }
1.16 christos 402:
1.1 cgd 403: /*
404: * Send ourselves the signal now we've given the message to everyone else.
405: * Note we block everything else possible while we're getting the signal.
406: * This ensures that all our jobs get continued when we wake up before
407: * we take any other signal.
408: */
1.28 christos 409: sigfillset(&nmask);
1.14 christos 410: sigprocmask(SIG_SETMASK, &nmask, &omask);
411: act.sa_handler = SIG_DFL;
412: sigemptyset(&act.sa_mask);
413: act.sa_flags = 0;
414: sigaction(signo, &act, NULL);
1.13 christos 415:
1.12 christos 416: if (DEBUG(JOB)) {
417: (void) fprintf(stdout,
418: "JobPassSig passing signal to self, mask = %x.\n",
419: ~0 & ~(1 << (signo-1)));
420: (void) fflush(stdout);
421: }
1.1 cgd 422:
1.28 christos 423: (void) kill(getpid(), signo);
424: if (signo != SIGTSTP) {
425: sigcont = SIGCONT;
426: Lst_ForEach(jobs, JobCondPassSig, (ClientData) &sigcont);
427: }
1.1 cgd 428:
1.13 christos 429: (void) sigprocmask(SIG_SETMASK, &omask, NULL);
1.14 christos 430: sigprocmask(SIG_SETMASK, &omask, NULL);
1.28 christos 431: if (signo != SIGCONT && signo != SIGTSTP) {
432: act.sa_handler = JobPassSig;
433: sigaction(sigcont, &act, NULL);
434: }
1.1 cgd 435: }
436:
437: /*-
438: *-----------------------------------------------------------------------
439: * JobCmpPid --
440: * Compare the pid of the job with the given pid and return 0 if they
441: * are equal. This function is called from Job_CatchChildren via
442: * Lst_Find to find the job descriptor of the finished job.
443: *
444: * Results:
445: * 0 if the pid's match
446: *
447: * Side Effects:
448: * None
449: *-----------------------------------------------------------------------
450: */
451: static int
1.12 christos 452: JobCmpPid(job, pid)
1.6 jtc 453: ClientData job; /* job to examine */
454: ClientData pid; /* process id desired */
1.1 cgd 455: {
1.16 christos 456: return *(int *) pid - ((Job *) job)->pid;
1.12 christos 457: }
458:
459: #ifdef REMOTE
460: /*-
461: *-----------------------------------------------------------------------
462: * JobCmpRmtID --
463: * Compare the rmtID of the job with the given rmtID and return 0 if they
1.16 christos 464: * are equal.
1.12 christos 465: *
466: * Results:
467: * 0 if the rmtID's match
468: *
469: * Side Effects:
470: * None.
471: *-----------------------------------------------------------------------
472: */
473: static int
474: JobCmpRmtID(job, rmtID)
475: ClientData job; /* job to examine */
476: ClientData rmtID; /* remote id desired */
477: {
478: return(*(int *) rmtID - *(int *) job->rmtID);
1.1 cgd 479: }
1.12 christos 480: #endif
1.1 cgd 481:
482: /*-
483: *-----------------------------------------------------------------------
484: * JobPrintCommand --
485: * Put out another command for the given job. If the command starts
486: * with an @ or a - we process it specially. In the former case,
487: * so long as the -s and -n flags weren't given to make, we stick
488: * a shell-specific echoOff command in the script. In the latter,
489: * we ignore errors for the entire job, unless the shell has error
490: * control.
491: * If the command is just "..." we take all future commands for this
492: * job to be commands to be executed once the entire graph has been
493: * made and return non-zero to signal that the end of the commands
494: * was reached. These commands are later attached to the postCommands
495: * node and executed by Job_End when all things are done.
496: * This function is called from JobStart via Lst_ForEach.
497: *
498: * Results:
499: * Always 0, unless the command was "..."
500: *
501: * Side Effects:
502: * If the command begins with a '-' and the shell has no error control,
503: * the JOB_IGNERR flag is set in the job descriptor.
504: * If the command is "..." and we're not ignoring such things,
505: * tailCmds is set to the successor node of the cmd.
506: * numCommands is incremented if the command is actually printed.
507: *-----------------------------------------------------------------------
508: */
509: static int
1.12 christos 510: JobPrintCommand(cmdp, jobp)
1.6 jtc 511: ClientData cmdp; /* command string to print */
512: ClientData jobp; /* job for which to print it */
1.1 cgd 513: {
514: Boolean noSpecials; /* true if we shouldn't worry about
515: * inserting special commands into
516: * the input stream. */
517: Boolean shutUp = FALSE; /* true if we put a no echo command
518: * into the command file */
519: Boolean errOff = FALSE; /* true if we turned error checking
520: * off before printing the command
521: * and need to turn it back on */
522: char *cmdTemplate; /* Template to use when printing the
523: * command */
524: char *cmdStart; /* Start of expanded command */
525: LstNode cmdNode; /* Node for replacing the command */
1.6 jtc 526: char *cmd = (char *) cmdp;
1.16 christos 527: Job *job = (Job *) jobp;
1.33 sjg 528: char *cp;
529:
1.18 mycroft 530: noSpecials = noExecute && !(job->node->type & OP_MAKE);
1.1 cgd 531:
1.12 christos 532: if (strcmp(cmd, "...") == 0) {
1.16 christos 533: job->node->type |= OP_SAVE_CMDS;
1.1 cgd 534: if ((job->flags & JOB_IGNDOTS) == 0) {
1.12 christos 535: job->tailCmds = Lst_Succ(Lst_Member(job->node->commands,
536: (ClientData)cmd));
1.16 christos 537: return 1;
1.12 christos 538: }
1.16 christos 539: return 0;
1.1 cgd 540: }
541:
1.12 christos 542: #define DBPRINTF(fmt, arg) if (DEBUG(JOB)) { \
543: (void) fprintf(stdout, fmt, arg); \
544: (void) fflush(stdout); \
545: } \
546: (void) fprintf(job->cmdFILE, fmt, arg); \
547: (void) fflush(job->cmdFILE);
1.1 cgd 548:
549: numCommands += 1;
550:
551: /*
552: * For debugging, we replace each command with the result of expanding
553: * the variables in the command.
554: */
1.12 christos 555: cmdNode = Lst_Member(job->node->commands, (ClientData)cmd);
556: cmdStart = cmd = Var_Subst(NULL, cmd, job->node, FALSE);
557: Lst_Replace(cmdNode, (ClientData)cmdStart);
1.1 cgd 558:
559: cmdTemplate = "%s\n";
560:
561: /*
562: * Check for leading @' and -'s to control echoing and error checking.
563: */
564: while (*cmd == '@' || *cmd == '-') {
565: if (*cmd == '@') {
566: shutUp = TRUE;
567: } else {
568: errOff = TRUE;
569: }
570: cmd++;
571: }
572:
1.5 cgd 573: while (isspace((unsigned char) *cmd))
574: cmd++;
1.1 cgd 575:
576: if (shutUp) {
1.12 christos 577: if (!(job->flags & JOB_SILENT) && !noSpecials &&
1.1 cgd 578: commandShell->hasEchoCtl) {
1.12 christos 579: DBPRINTF("%s\n", commandShell->echoOff);
1.1 cgd 580: } else {
581: shutUp = FALSE;
582: }
583: }
584:
585: if (errOff) {
1.12 christos 586: if ( !(job->flags & JOB_IGNERR) && !noSpecials) {
1.1 cgd 587: if (commandShell->hasErrCtl) {
588: /*
589: * we don't want the error-control commands showing
590: * up either, so we turn off echoing while executing
591: * them. We could put another field in the shell
592: * structure to tell JobDoOutput to look for this
593: * string too, but why make it any more complex than
594: * it already is?
595: */
1.12 christos 596: if (!(job->flags & JOB_SILENT) && !shutUp &&
1.1 cgd 597: commandShell->hasEchoCtl) {
1.12 christos 598: DBPRINTF("%s\n", commandShell->echoOff);
599: DBPRINTF("%s\n", commandShell->ignErr);
600: DBPRINTF("%s\n", commandShell->echoOn);
1.1 cgd 601: } else {
1.12 christos 602: DBPRINTF("%s\n", commandShell->ignErr);
1.1 cgd 603: }
604: } else if (commandShell->ignErr &&
1.12 christos 605: (*commandShell->ignErr != '\0'))
1.1 cgd 606: {
607: /*
608: * The shell has no error control, so we need to be
609: * weird to get it to ignore any errors from the command.
610: * If echoing is turned on, we turn it off and use the
611: * errCheck template to echo the command. Leave echoing
612: * off so the user doesn't see the weirdness we go through
613: * to ignore errors. Set cmdTemplate to use the weirdness
614: * instead of the simple "%s\n" template.
615: */
1.12 christos 616: if (!(job->flags & JOB_SILENT) && !shutUp &&
1.1 cgd 617: commandShell->hasEchoCtl) {
1.12 christos 618: DBPRINTF("%s\n", commandShell->echoOff);
619: DBPRINTF(commandShell->errCheck, cmd);
1.1 cgd 620: shutUp = TRUE;
621: }
622: cmdTemplate = commandShell->ignErr;
623: /*
1.16 christos 624: * The error ignoration (hee hee) is already taken care
1.1 cgd 625: * of by the ignErr template, so pretend error checking
626: * is still on.
627: */
628: errOff = FALSE;
629: } else {
630: errOff = FALSE;
631: }
632: } else {
633: errOff = FALSE;
634: }
635: }
1.16 christos 636:
1.33 sjg 637: if ((cp = Check_Cwd_Cmd(cmd)) != NULL) {
638: DBPRINTF("cd %s; ", cp);
639: }
1.12 christos 640: DBPRINTF(cmdTemplate, cmd);
1.23 itohy 641: free(cmdStart);
1.16 christos 642:
1.1 cgd 643: if (errOff) {
644: /*
645: * If echoing is already off, there's no point in issuing the
646: * echoOff command. Otherwise we issue it and pretend it was on
647: * for the whole command...
648: */
649: if (!shutUp && !(job->flags & JOB_SILENT) && commandShell->hasEchoCtl){
1.12 christos 650: DBPRINTF("%s\n", commandShell->echoOff);
1.1 cgd 651: shutUp = TRUE;
652: }
1.12 christos 653: DBPRINTF("%s\n", commandShell->errCheck);
1.1 cgd 654: }
655: if (shutUp) {
1.12 christos 656: DBPRINTF("%s\n", commandShell->echoOn);
1.1 cgd 657: }
1.12 christos 658: return 0;
1.1 cgd 659: }
660:
661: /*-
662: *-----------------------------------------------------------------------
663: * JobSaveCommand --
664: * Save a command to be executed when everything else is done.
665: * Callback function for JobFinish...
666: *
667: * Results:
668: * Always returns 0
669: *
670: * Side Effects:
671: * The command is tacked onto the end of postCommands's commands list.
672: *
673: *-----------------------------------------------------------------------
674: */
675: static int
1.12 christos 676: JobSaveCommand(cmd, gn)
1.6 jtc 677: ClientData cmd;
678: ClientData gn;
1.1 cgd 679: {
1.12 christos 680: cmd = (ClientData) Var_Subst(NULL, (char *) cmd, (GNode *) gn, FALSE);
681: (void) Lst_AtEnd(postCommands->commands, cmd);
682: return(0);
683: }
684:
685:
686: /*-
687: *-----------------------------------------------------------------------
688: * JobClose --
689: * Called to close both input and output pipes when a job is finished.
690: *
691: * Results:
692: * Nada
693: *
694: * Side Effects:
695: * The file descriptors associated with the job are closed.
696: *
697: *-----------------------------------------------------------------------
698: */
699: static void
700: JobClose(job)
701: Job *job;
702: {
703: if (usePipes) {
704: #ifdef RMT_WILL_WATCH
705: Rmt_Ignore(job->inPipe);
706: #else
707: FD_CLR(job->inPipe, &outputs);
708: #endif
709: if (job->outPipe != job->inPipe) {
710: (void) close(job->outPipe);
711: }
712: JobDoOutput(job, TRUE);
713: (void) close(job->inPipe);
714: } else {
715: (void) close(job->outFd);
716: JobDoOutput(job, TRUE);
717: }
1.1 cgd 718: }
719:
720: /*-
721: *-----------------------------------------------------------------------
722: * JobFinish --
723: * Do final processing for the given job including updating
724: * parents and starting new jobs as available/necessary. Note
725: * that we pay no attention to the JOB_IGNERR flag here.
726: * This is because when we're called because of a noexecute flag
727: * or something, jstat.w_status is 0 and when called from
728: * Job_CatchChildren, the status is zeroed if it s/b ignored.
729: *
730: * Results:
731: * None
732: *
733: * Side Effects:
734: * Some nodes may be put on the toBeMade queue.
735: * Final commands for the job are placed on postCommands.
736: *
1.16 christos 737: * If we got an error and are aborting (aborting == ABORT_ERROR) and
1.1 cgd 738: * the job list is now empty, we are done for the day.
1.16 christos 739: * If we recognized an error (errors !=0), we set the aborting flag
1.1 cgd 740: * to ABORT_ERROR so no more jobs will be started.
741: *-----------------------------------------------------------------------
742: */
743: /*ARGSUSED*/
1.5 cgd 744: static void
1.12 christos 745: JobFinish(job, status)
1.13 christos 746: Job *job; /* job to finish */
747: int *status; /* sub-why job went away */
1.1 cgd 748: {
1.13 christos 749: Boolean done;
1.1 cgd 750:
1.12 christos 751: if ((WIFEXITED(*status) &&
752: (((WEXITSTATUS(*status) != 0) && !(job->flags & JOB_IGNERR)))) ||
1.28 christos 753: WIFSIGNALED(*status))
1.1 cgd 754: {
755: /*
756: * If it exited non-zero and either we're doing things our
757: * way or we're not ignoring errors, the job is finished.
758: * Similarly, if the shell died because of a signal
759: * the job is also finished. In these
760: * cases, finish out the job's output before printing the exit
761: * status...
762: */
1.12 christos 763: #ifdef REMOTE
764: KILL(job->pid, SIGCONT);
765: #endif
766: JobClose(job);
1.1 cgd 767: if (job->cmdFILE != NULL && job->cmdFILE != stdout) {
1.12 christos 768: (void) fclose(job->cmdFILE);
1.34 ! christos 769: job->cmdFILE = NULL;
1.1 cgd 770: }
771: done = TRUE;
1.12 christos 772: #ifdef REMOTE
773: if (job->flags & JOB_REMOTE)
774: Rmt_Done(job->rmtID, job->node);
775: #endif
776: } else if (WIFEXITED(*status)) {
1.1 cgd 777: /*
778: * Deal with ignored errors in -B mode. We need to print a message
779: * telling of the ignored error as well as setting status.w_status
780: * to 0 so the next command gets run. To do this, we set done to be
1.12 christos 781: * TRUE if in -B mode and the job exited non-zero.
782: */
783: done = WEXITSTATUS(*status) != 0;
1.16 christos 784: /*
1.12 christos 785: * Old comment said: "Note we don't
1.1 cgd 786: * want to close down any of the streams until we know we're at the
1.12 christos 787: * end."
788: * But we do. Otherwise when are we going to print the rest of the
789: * stuff?
790: */
791: JobClose(job);
792: #ifdef REMOTE
793: if (job->flags & JOB_REMOTE)
794: Rmt_Done(job->rmtID, job->node);
795: #endif /* REMOTE */
1.1 cgd 796: } else {
797: /*
798: * No need to close things down or anything.
799: */
800: done = FALSE;
801: }
1.16 christos 802:
1.1 cgd 803: if (done ||
1.12 christos 804: WIFSTOPPED(*status) ||
1.28 christos 805: (WIFSIGNALED(*status) && (WTERMSIG(*status) == SIGCONT)))
1.1 cgd 806: {
807: FILE *out;
1.16 christos 808:
1.12 christos 809: if (compatMake && !usePipes && (job->flags & JOB_IGNERR)) {
1.1 cgd 810: /*
811: * If output is going to a file and this job is ignoring
812: * errors, arrange to have the exit status sent to the
813: * output file as well.
814: */
1.12 christos 815: out = fdopen(job->outFd, "w");
1.34 ! christos 816: if (out == NULL)
! 817: Punt("Cannot fdopen");
1.1 cgd 818: } else {
819: out = stdout;
820: }
821:
1.12 christos 822: if (WIFEXITED(*status)) {
823: if (DEBUG(JOB)) {
824: (void) fprintf(stdout, "Process %d exited.\n", job->pid);
825: (void) fflush(stdout);
826: }
827: if (WEXITSTATUS(*status) != 0) {
1.1 cgd 828: if (usePipes && job->node != lastNode) {
1.12 christos 829: MESSAGE(out, job->node);
1.1 cgd 830: lastNode = job->node;
831: }
1.12 christos 832: (void) fprintf(out, "*** Error code %d%s\n",
833: WEXITSTATUS(*status),
834: (job->flags & JOB_IGNERR) ? "(ignored)" : "");
1.1 cgd 835:
836: if (job->flags & JOB_IGNERR) {
1.13 christos 837: *status = 0;
1.1 cgd 838: }
839: } else if (DEBUG(JOB)) {
840: if (usePipes && job->node != lastNode) {
1.12 christos 841: MESSAGE(out, job->node);
1.1 cgd 842: lastNode = job->node;
843: }
1.12 christos 844: (void) fprintf(out, "*** Completed successfully\n");
845: }
1.28 christos 846: } else if (WIFSTOPPED(*status) && WSTOPSIG(*status) != SIGCONT) {
1.12 christos 847: if (DEBUG(JOB)) {
848: (void) fprintf(stdout, "Process %d stopped.\n", job->pid);
849: (void) fflush(stdout);
1.1 cgd 850: }
851: if (usePipes && job->node != lastNode) {
1.12 christos 852: MESSAGE(out, job->node);
1.1 cgd 853: lastNode = job->node;
854: }
1.12 christos 855: if (!(job->flags & JOB_REMIGRATE)) {
1.28 christos 856: switch (WSTOPSIG(*status)) {
857: case SIGTSTP:
858: (void) fprintf(out, "*** Suspended\n");
859: break;
860: case SIGSTOP:
861: (void) fprintf(out, "*** Stopped\n");
862: break;
863: default:
864: (void) fprintf(out, "*** Stopped -- signal %d\n",
865: WSTOPSIG(*status));
866: }
1.1 cgd 867: }
868: job->flags |= JOB_RESUME;
869: (void)Lst_AtEnd(stoppedJobs, (ClientData)job);
1.12 christos 870: #ifdef REMOTE
871: if (job->flags & JOB_REMIGRATE)
872: JobRestart(job);
873: #endif
874: (void) fflush(out);
1.1 cgd 875: return;
1.28 christos 876: } else if (WIFSTOPPED(*status) && WSTOPSIG(*status) == SIGCONT) {
1.1 cgd 877: /*
878: * If the beastie has continued, shift the Job from the stopped
1.16 christos 879: * list to the running one (or re-stop it if concurrency is
1.1 cgd 880: * exceeded) and go and get another child.
881: */
882: if (job->flags & (JOB_RESUME|JOB_REMIGRATE|JOB_RESTART)) {
883: if (usePipes && job->node != lastNode) {
1.12 christos 884: MESSAGE(out, job->node);
1.1 cgd 885: lastNode = job->node;
886: }
1.12 christos 887: (void) fprintf(out, "*** Continued\n");
1.1 cgd 888: }
1.12 christos 889: if (!(job->flags & JOB_CONTINUING)) {
890: if (DEBUG(JOB)) {
891: (void) fprintf(stdout,
892: "Warning: process %d was not continuing.\n",
893: job->pid);
894: (void) fflush(stdout);
895: }
896: #ifdef notdef
897: /*
898: * We don't really want to restart a job from scratch just
899: * because it continued, especially not without killing the
900: * continuing process! That's why this is ifdef'ed out.
901: * FD - 9/17/90
902: */
1.1 cgd 903: JobRestart(job);
1.12 christos 904: #endif
905: }
906: job->flags &= ~JOB_CONTINUING;
907: Lst_AtEnd(jobs, (ClientData)job);
908: nJobs += 1;
909: if (!(job->flags & JOB_REMOTE)) {
910: if (DEBUG(JOB)) {
911: (void) fprintf(stdout,
912: "Process %d is continuing locally.\n",
913: job->pid);
914: (void) fflush(stdout);
915: }
916: nLocal += 1;
1.1 cgd 917: }
1.12 christos 918: if (nJobs == maxJobs) {
919: jobFull = TRUE;
920: if (DEBUG(JOB)) {
921: (void) fprintf(stdout, "Job queue is full.\n");
922: (void) fflush(stdout);
923: }
924: }
925: (void) fflush(out);
926: return;
1.1 cgd 927: } else {
928: if (usePipes && job->node != lastNode) {
1.12 christos 929: MESSAGE(out, job->node);
1.1 cgd 930: lastNode = job->node;
931: }
1.12 christos 932: (void) fprintf(out, "*** Signal %d\n", WTERMSIG(*status));
1.1 cgd 933: }
934:
1.12 christos 935: (void) fflush(out);
1.1 cgd 936: }
937:
938: /*
939: * Now handle the -B-mode stuff. If the beast still isn't finished,
940: * try and restart the job on the next command. If JobStart says it's
941: * ok, it's ok. If there's an error, this puppy is done.
942: */
1.12 christos 943: if (compatMake && (WIFEXITED(*status) &&
944: !Lst_IsAtEnd(job->node->commands))) {
945: switch (JobStart(job->node, job->flags & JOB_IGNDOTS, job)) {
946: case JOB_RUNNING:
947: done = FALSE;
948: break;
949: case JOB_ERROR:
950: done = TRUE;
1.28 christos 951: *status = W_EXITCODE(1, 0);
1.12 christos 952: break;
953: case JOB_FINISHED:
954: /*
955: * If we got back a JOB_FINISHED code, JobStart has already
956: * called Make_Update and freed the job descriptor. We set
957: * done to false here to avoid fake cycles and double frees.
958: * JobStart needs to do the update so we can proceed up the
959: * graph when given the -n flag..
960: */
961: done = FALSE;
962: break;
1.1 cgd 963: }
964: } else {
965: done = TRUE;
966: }
1.16 christos 967:
1.1 cgd 968:
969: if (done &&
970: (aborting != ABORT_ERROR) &&
971: (aborting != ABORT_INTERRUPT) &&
1.13 christos 972: (*status == 0))
1.1 cgd 973: {
974: /*
975: * As long as we aren't aborting and the job didn't return a non-zero
976: * status that we shouldn't ignore, we call Make_Update to update
977: * the parents. In addition, any saved commands for the node are placed
978: * on the .END target.
979: */
980: if (job->tailCmds != NILLNODE) {
1.12 christos 981: Lst_ForEachFrom(job->node->commands, job->tailCmds,
1.1 cgd 982: JobSaveCommand,
1.12 christos 983: (ClientData)job->node);
1.1 cgd 984: }
985: job->node->made = MADE;
1.12 christos 986: Make_Update(job->node);
1.1 cgd 987: free((Address)job);
1.15 christos 988: } else if (*status != 0) {
1.1 cgd 989: errors += 1;
990: free((Address)job);
991: }
992:
1.12 christos 993: JobRestartJobs();
1.1 cgd 994:
995: /*
996: * Set aborting if any error.
997: */
998: if (errors && !keepgoing && (aborting != ABORT_INTERRUPT)) {
999: /*
1000: * If we found any errors in this batch of children and the -k flag
1001: * wasn't given, we set the aborting flag so no more jobs get
1002: * started.
1003: */
1004: aborting = ABORT_ERROR;
1005: }
1.16 christos 1006:
1.1 cgd 1007: if ((aborting == ABORT_ERROR) && Job_Empty()) {
1008: /*
1009: * If we are aborting and the job table is now empty, we finish.
1010: */
1.12 christos 1011: Finish(errors);
1.1 cgd 1012: }
1013: }
1014:
1015: /*-
1016: *-----------------------------------------------------------------------
1017: * Job_Touch --
1018: * Touch the given target. Called by JobStart when the -t flag was
1019: * given
1020: *
1021: * Results:
1022: * None
1023: *
1024: * Side Effects:
1025: * The data modification of the file is changed. In addition, if the
1026: * file did not exist, it is created.
1027: *-----------------------------------------------------------------------
1028: */
1029: void
1.12 christos 1030: Job_Touch(gn, silent)
1.1 cgd 1031: GNode *gn; /* the node of the file to touch */
1032: Boolean silent; /* TRUE if should not print messages */
1033: {
1034: int streamID; /* ID of stream opened to do the touch */
1.14 christos 1035: struct utimbuf times; /* Times for utime() call */
1.1 cgd 1036:
1.17 mycroft 1037: if (gn->type & (OP_JOIN|OP_USE|OP_EXEC|OP_OPTIONAL|OP_PHONY)) {
1.1 cgd 1038: /*
1039: * .JOIN, .USE, .ZEROTIME and .OPTIONAL targets are "virtual" targets
1040: * and, as such, shouldn't really be created.
1041: */
1042: return;
1043: }
1.16 christos 1044:
1.18 mycroft 1045: if (!silent || (noExecute && !(gn->type & OP_MAKE))) {
1.12 christos 1046: (void) fprintf(stdout, "touch %s\n", gn->name);
1047: (void) fflush(stdout);
1.1 cgd 1048: }
1049:
1.18 mycroft 1050: if (noExecute && !(gn->type & OP_MAKE)) {
1.1 cgd 1051: return;
1052: }
1053:
1054: if (gn->type & OP_ARCHV) {
1.12 christos 1055: Arch_Touch(gn);
1.1 cgd 1056: } else if (gn->type & OP_LIB) {
1.12 christos 1057: Arch_TouchLib(gn);
1.1 cgd 1058: } else {
1059: char *file = gn->path ? gn->path : gn->name;
1060:
1.14 christos 1061: times.actime = times.modtime = now;
1062: if (utime(file, ×) < 0){
1.12 christos 1063: streamID = open(file, O_RDWR | O_CREAT, 0666);
1.1 cgd 1064:
1065: if (streamID >= 0) {
1066: char c;
1067:
1068: /*
1069: * Read and write a byte to the file to change the
1070: * modification time, then close the file.
1071: */
1072: if (read(streamID, &c, 1) == 1) {
1.20 kleink 1073: (void) lseek(streamID, (off_t)0, SEEK_SET);
1.12 christos 1074: (void) write(streamID, &c, 1);
1.1 cgd 1075: }
1.16 christos 1076:
1.12 christos 1077: (void) close(streamID);
1078: } else {
1079: (void) fprintf(stdout, "*** couldn't touch %s: %s",
1080: file, strerror(errno));
1081: (void) fflush(stdout);
1082: }
1.1 cgd 1083: }
1084: }
1085: }
1086:
1087: /*-
1088: *-----------------------------------------------------------------------
1089: * Job_CheckCommands --
1.16 christos 1090: * Make sure the given node has all the commands it needs.
1.1 cgd 1091: *
1092: * Results:
1093: * TRUE if the commands list is/was ok.
1094: *
1095: * Side Effects:
1096: * The node will have commands from the .DEFAULT rule added to it
1097: * if it needs them.
1098: *-----------------------------------------------------------------------
1099: */
1100: Boolean
1.12 christos 1101: Job_CheckCommands(gn, abortProc)
1.1 cgd 1102: GNode *gn; /* The target whose commands need
1103: * verifying */
1.16 christos 1104: void (*abortProc) __P((char *, ...));
1.5 cgd 1105: /* Function to abort with message */
1.1 cgd 1106: {
1.12 christos 1107: if (OP_NOP(gn->type) && Lst_IsEmpty(gn->commands) &&
1.1 cgd 1108: (gn->type & OP_LIB) == 0) {
1109: /*
1110: * No commands. Look for .DEFAULT rule from which we might infer
1.16 christos 1111: * commands
1.1 cgd 1112: */
1113: if ((DEFAULT != NILGNODE) && !Lst_IsEmpty(DEFAULT->commands)) {
1.6 jtc 1114: char *p1;
1.1 cgd 1115: /*
1116: * Make only looks for a .DEFAULT if the node was never the
1117: * target of an operator, so that's what we do too. If
1118: * a .DEFAULT was given, we substitute its commands for gn's
1119: * commands and set the IMPSRC variable to be the target's name
1120: * The DEFAULT node acts like a transformation rule, in that
1121: * gn also inherits any attributes or sources attached to
1122: * .DEFAULT itself.
1123: */
1124: Make_HandleUse(DEFAULT, gn);
1.12 christos 1125: Var_Set(IMPSRC, Var_Value(TARGET, gn, &p1), gn);
1.6 jtc 1126: if (p1)
1127: free(p1);
1.12 christos 1128: } else if (Dir_MTime(gn) == 0) {
1.1 cgd 1129: /*
1130: * The node wasn't the target of an operator we have no .DEFAULT
1131: * rule to go on and the target doesn't already exist. There's
1132: * nothing more we can do for this branch. If the -k flag wasn't
1133: * given, we stop in our tracks, otherwise we just don't update
1.16 christos 1134: * this node's parents so they never get examined.
1.1 cgd 1135: */
1.12 christos 1136: static const char msg[] = "make: don't know how to make";
1137:
1.1 cgd 1138: if (gn->type & OP_OPTIONAL) {
1.12 christos 1139: (void) fprintf(stdout, "%s %s(ignored)\n", msg, gn->name);
1140: (void) fflush(stdout);
1.1 cgd 1141: } else if (keepgoing) {
1.12 christos 1142: (void) fprintf(stdout, "%s %s(continuing)\n", msg, gn->name);
1143: (void) fflush(stdout);
1144: return FALSE;
1.1 cgd 1145: } else {
1.12 christos 1146: (*abortProc)("%s %s. Stop", msg, gn->name);
1147: return FALSE;
1.1 cgd 1148: }
1149: }
1150: }
1.12 christos 1151: return TRUE;
1.1 cgd 1152: }
1153: #ifdef RMT_WILL_WATCH
1154: /*-
1155: *-----------------------------------------------------------------------
1156: * JobLocalInput --
1157: * Handle a pipe becoming readable. Callback function for Rmt_Watch
1158: *
1159: * Results:
1160: * None
1161: *
1162: * Side Effects:
1163: * JobDoOutput is called.
1.16 christos 1164: *
1.1 cgd 1165: *-----------------------------------------------------------------------
1166: */
1167: /*ARGSUSED*/
1168: static void
1169: JobLocalInput(stream, job)
1.16 christos 1170: int stream; /* Stream that's ready (ignored) */
1.1 cgd 1171: Job *job; /* Job to which the stream belongs */
1172: {
1173: JobDoOutput(job, FALSE);
1174: }
1175: #endif /* RMT_WILL_WATCH */
1176:
1177: /*-
1178: *-----------------------------------------------------------------------
1179: * JobExec --
1180: * Execute the shell for the given job. Called from JobStart and
1181: * JobRestart.
1182: *
1183: * Results:
1184: * None.
1185: *
1186: * Side Effects:
1187: * A shell is executed, outputs is altered and the Job structure added
1188: * to the job table.
1189: *
1190: *-----------------------------------------------------------------------
1191: */
1192: static void
1193: JobExec(job, argv)
1194: Job *job; /* Job to execute */
1195: char **argv;
1196: {
1197: int cpid; /* ID of new child */
1.16 christos 1198:
1.1 cgd 1199: if (DEBUG(JOB)) {
1200: int i;
1.16 christos 1201:
1.12 christos 1202: (void) fprintf(stdout, "Running %s %sly\n", job->node->name,
1203: job->flags&JOB_REMOTE?"remote":"local");
1204: (void) fprintf(stdout, "\tCommand: ");
1205: for (i = 0; argv[i] != NULL; i++) {
1206: (void) fprintf(stdout, "%s ", argv[i]);
1.1 cgd 1207: }
1.12 christos 1208: (void) fprintf(stdout, "\n");
1209: (void) fflush(stdout);
1.1 cgd 1210: }
1.16 christos 1211:
1.1 cgd 1212: /*
1213: * Some jobs produce no output and it's disconcerting to have
1.16 christos 1214: * no feedback of their running (since they produce no output, the
1.1 cgd 1215: * banner with their name in it never appears). This is an attempt to
1216: * provide that feedback, even if nothing follows it.
1217: */
1218: if ((lastNode != job->node) && (job->flags & JOB_FIRST) &&
1.12 christos 1219: !(job->flags & JOB_SILENT)) {
1220: MESSAGE(stdout, job->node);
1.1 cgd 1221: lastNode = job->node;
1222: }
1.16 christos 1223:
1.1 cgd 1224: #ifdef RMT_NO_EXEC
1225: if (job->flags & JOB_REMOTE) {
1226: goto jobExecFinish;
1227: }
1228: #endif /* RMT_NO_EXEC */
1229:
1.12 christos 1230: if ((cpid = vfork()) == -1) {
1.34 ! christos 1231: Punt("Cannot vfork");
1.1 cgd 1232: } else if (cpid == 0) {
1233:
1234: /*
1235: * Must duplicate the input stream down to the child's input and
1.16 christos 1236: * reset it to the beginning (again). Since the stream was marked
1.1 cgd 1237: * close-on-exec, we must clear that bit in the new input.
1238: */
1.12 christos 1239: if (dup2(FILENO(job->cmdFILE), 0) == -1)
1240: Punt("Cannot dup2: %s", strerror(errno));
1241: (void) fcntl(0, F_SETFD, 0);
1.20 kleink 1242: (void) lseek(0, (off_t)0, SEEK_SET);
1.16 christos 1243:
1.1 cgd 1244: if (usePipes) {
1245: /*
1246: * Set up the child's output to be routed through the pipe
1247: * we've created for it.
1248: */
1.12 christos 1249: if (dup2(job->outPipe, 1) == -1)
1250: Punt("Cannot dup2: %s", strerror(errno));
1.1 cgd 1251: } else {
1252: /*
1253: * We're capturing output in a file, so we duplicate the
1254: * descriptor to the temporary file into the standard
1255: * output.
1256: */
1.12 christos 1257: if (dup2(job->outFd, 1) == -1)
1258: Punt("Cannot dup2: %s", strerror(errno));
1.1 cgd 1259: }
1260: /*
1261: * The output channels are marked close on exec. This bit was
1.16 christos 1262: * duplicated by the dup2 (on some systems), so we have to clear
1.1 cgd 1263: * it before routing the shell's error output to the same place as
1264: * its standard output.
1265: */
1.12 christos 1266: (void) fcntl(1, F_SETFD, 0);
1267: if (dup2(1, 2) == -1)
1268: Punt("Cannot dup2: %s", strerror(errno));
1.1 cgd 1269:
1270: #ifdef USE_PGRP
1271: /*
1272: * We want to switch the child into a different process family so
1273: * we can kill it and all its descendants in one fell swoop,
1274: * by killing its process family, but not commit suicide.
1275: */
1.12 christos 1276: # if defined(SYSV)
1277: (void) setsid();
1278: # else
1279: (void) setpgid(0, getpid());
1280: # endif
1281: #endif /* USE_PGRP */
1.1 cgd 1282:
1.12 christos 1283: #ifdef REMOTE
1284: if (job->flags & JOB_REMOTE) {
1285: Rmt_Exec(shellPath, argv, FALSE);
1.16 christos 1286: } else
1.12 christos 1287: #endif /* REMOTE */
1288: (void) execv(shellPath, argv);
1289:
1290: (void) write(2, "Could not execute shell\n",
1291: sizeof("Could not execute shell"));
1292: _exit(1);
1.1 cgd 1293: } else {
1.12 christos 1294: #ifdef REMOTE
1.28 christos 1295: sigset_t nmask, omask;
1296: sigemptyset(&nmask);
1297: sigaddset(&nmask, SIGCHLD);
1298: sigprocmask(SIG_BLOCK, &nmask, &omask);
1.12 christos 1299: #endif
1.1 cgd 1300: job->pid = cpid;
1301:
1302: if (usePipes && (job->flags & JOB_FIRST) ) {
1303: /*
1304: * The first time a job is run for a node, we set the current
1305: * position in the buffer to the beginning and mark another
1306: * stream to watch in the outputs mask
1307: */
1308: job->curPos = 0;
1.16 christos 1309:
1.1 cgd 1310: #ifdef RMT_WILL_WATCH
1311: Rmt_Watch(job->inPipe, JobLocalInput, job);
1312: #else
1313: FD_SET(job->inPipe, &outputs);
1314: #endif /* RMT_WILL_WATCH */
1315: }
1316:
1317: if (job->flags & JOB_REMOTE) {
1.12 christos 1318: #ifndef REMOTE
1.5 cgd 1319: job->rmtID = 0;
1.12 christos 1320: #else
1321: job->rmtID = Rmt_LastID(job->pid);
1322: #endif /* REMOTE */
1.1 cgd 1323: } else {
1324: nLocal += 1;
1325: /*
1.12 christos 1326: * XXX: Used to not happen if REMOTE. Why?
1.1 cgd 1327: */
1.12 christos 1328: if (job->cmdFILE != NULL && job->cmdFILE != stdout) {
1329: (void) fclose(job->cmdFILE);
1.1 cgd 1330: job->cmdFILE = NULL;
1331: }
1332: }
1.12 christos 1333: #ifdef REMOTE
1.28 christos 1334: sigprocmask(SIG_SETMASK, &omask, NULL);
1.12 christos 1335: #endif
1.1 cgd 1336: }
1337:
1.5 cgd 1338: #ifdef RMT_NO_EXEC
1.16 christos 1339: jobExecFinish:
1.5 cgd 1340: #endif
1.1 cgd 1341: /*
1342: * Now the job is actually running, add it to the table.
1343: */
1344: nJobs += 1;
1.12 christos 1345: (void) Lst_AtEnd(jobs, (ClientData)job);
1.1 cgd 1346: if (nJobs == maxJobs) {
1347: jobFull = TRUE;
1348: }
1349: }
1350:
1351: /*-
1352: *-----------------------------------------------------------------------
1353: * JobMakeArgv --
1354: * Create the argv needed to execute the shell for a given job.
1.16 christos 1355: *
1.1 cgd 1356: *
1357: * Results:
1358: *
1359: * Side Effects:
1360: *
1361: *-----------------------------------------------------------------------
1362: */
1363: static void
1364: JobMakeArgv(job, argv)
1365: Job *job;
1366: char **argv;
1367: {
1368: int argc;
1369: static char args[10]; /* For merged arguments */
1.16 christos 1370:
1.1 cgd 1371: argv[0] = shellName;
1372: argc = 1;
1373:
1374: if ((commandShell->exit && (*commandShell->exit != '-')) ||
1375: (commandShell->echo && (*commandShell->echo != '-')))
1376: {
1377: /*
1378: * At least one of the flags doesn't have a minus before it, so
1379: * merge them together. Have to do this because the *(&(@*#*&#$#
1380: * Bourne shell thinks its second argument is a file to source.
1381: * Grrrr. Note the ten-character limitation on the combined arguments.
1382: */
1.29 christos 1383: (void)snprintf(args, sizeof(args), "-%s%s",
1.1 cgd 1384: ((job->flags & JOB_IGNERR) ? "" :
1385: (commandShell->exit ? commandShell->exit : "")),
1386: ((job->flags & JOB_SILENT) ? "" :
1387: (commandShell->echo ? commandShell->echo : "")));
1388:
1389: if (args[1]) {
1390: argv[argc] = args;
1391: argc++;
1392: }
1393: } else {
1394: if (!(job->flags & JOB_IGNERR) && commandShell->exit) {
1395: argv[argc] = commandShell->exit;
1396: argc++;
1397: }
1398: if (!(job->flags & JOB_SILENT) && commandShell->echo) {
1399: argv[argc] = commandShell->echo;
1400: argc++;
1401: }
1402: }
1.12 christos 1403: argv[argc] = NULL;
1.1 cgd 1404: }
1405:
1406: /*-
1407: *-----------------------------------------------------------------------
1408: * JobRestart --
1.16 christos 1409: * Restart a job that stopped for some reason.
1.1 cgd 1410: *
1411: * Results:
1412: * None.
1413: *
1414: * Side Effects:
1415: * jobFull will be set if the job couldn't be run.
1416: *
1417: *-----------------------------------------------------------------------
1418: */
1419: static void
1420: JobRestart(job)
1421: Job *job; /* Job to restart */
1422: {
1.12 christos 1423: #ifdef REMOTE
1424: int host;
1425: #endif
1.16 christos 1426:
1.1 cgd 1427: if (job->flags & JOB_REMIGRATE) {
1.12 christos 1428: if (
1429: #ifdef REMOTE
1430: verboseRemigrates ||
1431: #endif
1432: DEBUG(JOB)) {
1433: (void) fprintf(stdout, "*** remigrating %x(%s)\n",
1434: job->pid, job->node->name);
1435: (void) fflush(stdout);
1.1 cgd 1436: }
1.12 christos 1437:
1438: #ifdef REMOTE
1439: if (!Rmt_ReExport(job->pid, job->node, &host)) {
1440: if (verboseRemigrates || DEBUG(JOB)) {
1441: (void) fprintf(stdout, "*** couldn't migrate...\n");
1442: (void) fflush(stdout);
1443: }
1444: #endif
1445: if (nLocal != maxLocal) {
1.1 cgd 1446: /*
1447: * Job cannot be remigrated, but there's room on the local
1448: * machine, so resume the job and note that another
1449: * local job has started.
1450: */
1.12 christos 1451: if (
1452: #ifdef REMOTE
1453: verboseRemigrates ||
1454: #endif
1455: DEBUG(JOB)) {
1456: (void) fprintf(stdout, "*** resuming on local machine\n");
1457: (void) fflush(stdout);
1458: }
1.1 cgd 1459: KILL(job->pid, SIGCONT);
1460: nLocal +=1;
1.12 christos 1461: #ifdef REMOTE
1462: job->flags &= ~(JOB_REMIGRATE|JOB_RESUME|JOB_REMOTE);
1463: job->flags |= JOB_CONTINUING;
1464: #else
1.1 cgd 1465: job->flags &= ~(JOB_REMIGRATE|JOB_RESUME);
1.12 christos 1466: #endif
1.1 cgd 1467: } else {
1468: /*
1469: * Job cannot be restarted. Mark the table as full and
1470: * place the job back on the list of stopped jobs.
1471: */
1.12 christos 1472: if (
1473: #ifdef REMOTE
1474: verboseRemigrates ||
1475: #endif
1476: DEBUG(JOB)) {
1477: (void) fprintf(stdout, "*** holding\n");
1478: (void) fflush(stdout);
1479: }
1.1 cgd 1480: (void)Lst_AtFront(stoppedJobs, (ClientData)job);
1481: jobFull = TRUE;
1482: if (DEBUG(JOB)) {
1.12 christos 1483: (void) fprintf(stdout, "Job queue is full.\n");
1484: (void) fflush(stdout);
1.1 cgd 1485: }
1486: return;
1.12 christos 1487: }
1488: #ifdef REMOTE
1489: } else {
1490: /*
1491: * Clear out the remigrate and resume flags. Set the continuing
1492: * flag so we know later on that the process isn't exiting just
1493: * because of a signal.
1494: */
1495: job->flags &= ~(JOB_REMIGRATE|JOB_RESUME);
1496: job->flags |= JOB_CONTINUING;
1497: job->rmtID = host;
1.1 cgd 1498: }
1.12 christos 1499: #endif
1.16 christos 1500:
1.1 cgd 1501: (void)Lst_AtEnd(jobs, (ClientData)job);
1502: nJobs += 1;
1503: if (nJobs == maxJobs) {
1504: jobFull = TRUE;
1505: if (DEBUG(JOB)) {
1.12 christos 1506: (void) fprintf(stdout, "Job queue is full.\n");
1507: (void) fflush(stdout);
1.1 cgd 1508: }
1509: }
1510: } else if (job->flags & JOB_RESTART) {
1511: /*
1512: * Set up the control arguments to the shell. This is based on the
1513: * flags set earlier for this job. If the JOB_IGNERR flag is clear,
1514: * the 'exit' flag of the commandShell is used to cause it to exit
1515: * upon receiving an error. If the JOB_SILENT flag is clear, the
1516: * 'echo' flag of the commandShell is used to get it to start echoing
1.16 christos 1517: * as soon as it starts processing commands.
1.1 cgd 1518: */
1.29 christos 1519: char *argv[10];
1.16 christos 1520:
1.1 cgd 1521: JobMakeArgv(job, argv);
1.12 christos 1522:
1.1 cgd 1523: if (DEBUG(JOB)) {
1.12 christos 1524: (void) fprintf(stdout, "Restarting %s...", job->node->name);
1525: (void) fflush(stdout);
1.1 cgd 1526: }
1.12 christos 1527: #ifdef REMOTE
1528: if ((job->node->type&OP_NOEXPORT) ||
1.16 christos 1529: (nLocal < maxLocal && runLocalFirst)
1.12 christos 1530: # ifdef RMT_NO_EXEC
1531: || !Rmt_Export(shellPath, argv, job)
1532: # else
1533: || !Rmt_Begin(shellPath, argv, job->node)
1534: # endif
1535: #endif
1536: {
1537: if (((nLocal >= maxLocal) && !(job->flags & JOB_SPECIAL))) {
1.1 cgd 1538: /*
1539: * Can't be exported and not allowed to run locally -- put it
1540: * back on the hold queue and mark the table full
1541: */
1542: if (DEBUG(JOB)) {
1.12 christos 1543: (void) fprintf(stdout, "holding\n");
1544: (void) fflush(stdout);
1.1 cgd 1545: }
1546: (void)Lst_AtFront(stoppedJobs, (ClientData)job);
1547: jobFull = TRUE;
1548: if (DEBUG(JOB)) {
1.12 christos 1549: (void) fprintf(stdout, "Job queue is full.\n");
1550: (void) fflush(stdout);
1.1 cgd 1551: }
1552: return;
1.12 christos 1553: } else {
1.1 cgd 1554: /*
1555: * Job may be run locally.
1556: */
1557: if (DEBUG(JOB)) {
1.12 christos 1558: (void) fprintf(stdout, "running locally\n");
1559: (void) fflush(stdout);
1.1 cgd 1560: }
1561: job->flags &= ~JOB_REMOTE;
1.12 christos 1562: }
1.1 cgd 1563: }
1.12 christos 1564: #ifdef REMOTE
1565: else {
1566: /*
1567: * Can be exported. Hooray!
1568: */
1569: if (DEBUG(JOB)) {
1570: (void) fprintf(stdout, "exporting\n");
1571: (void) fflush(stdout);
1572: }
1573: job->flags |= JOB_REMOTE;
1574: }
1575: #endif
1.1 cgd 1576: JobExec(job, argv);
1577: } else {
1578: /*
1579: * The job has stopped and needs to be restarted. Why it stopped,
1580: * we don't know...
1581: */
1582: if (DEBUG(JOB)) {
1.12 christos 1583: (void) fprintf(stdout, "Resuming %s...", job->node->name);
1584: (void) fflush(stdout);
1.1 cgd 1585: }
1586: if (((job->flags & JOB_REMOTE) ||
1.12 christos 1587: (nLocal < maxLocal) ||
1588: #ifdef REMOTE
1589: (((job->flags & JOB_SPECIAL) &&
1590: (job->node->type & OP_NOEXPORT)) &&
1591: (maxLocal == 0))) &&
1592: #else
1593: ((job->flags & JOB_SPECIAL) &&
1594: (maxLocal == 0))) &&
1595: #endif
1596: (nJobs != maxJobs))
1.1 cgd 1597: {
1598: /*
1599: * If the job is remote, it's ok to resume it as long as the
1600: * maximum concurrency won't be exceeded. If it's local and
1.16 christos 1601: * we haven't reached the local concurrency limit already (or the
1.1 cgd 1602: * job must be run locally and maxLocal is 0), it's also ok to
1603: * resume it.
1604: */
1605: Boolean error;
1.13 christos 1606: int status;
1.16 christos 1607:
1.1 cgd 1608: #ifdef RMT_WANTS_SIGNALS
1609: if (job->flags & JOB_REMOTE) {
1610: error = !Rmt_Signal(job, SIGCONT);
1611: } else
1612: #endif /* RMT_WANTS_SIGNALS */
1613: error = (KILL(job->pid, SIGCONT) != 0);
1614:
1615: if (!error) {
1616: /*
1617: * Make sure the user knows we've continued the beast and
1618: * actually put the thing in the job table.
1619: */
1620: job->flags |= JOB_CONTINUING;
1.28 christos 1621: status = W_STOPCODE(SIGCONT);
1.12 christos 1622: JobFinish(job, &status);
1.16 christos 1623:
1.1 cgd 1624: job->flags &= ~(JOB_RESUME|JOB_CONTINUING);
1625: if (DEBUG(JOB)) {
1.12 christos 1626: (void) fprintf(stdout, "done\n");
1627: (void) fflush(stdout);
1.1 cgd 1628: }
1629: } else {
1630: Error("couldn't resume %s: %s",
1631: job->node->name, strerror(errno));
1.28 christos 1632: status = W_EXITCODE(1, 0);
1.12 christos 1633: JobFinish(job, &status);
1.1 cgd 1634: }
1635: } else {
1636: /*
1637: * Job cannot be restarted. Mark the table as full and
1638: * place the job back on the list of stopped jobs.
1639: */
1640: if (DEBUG(JOB)) {
1.12 christos 1641: (void) fprintf(stdout, "table full\n");
1642: (void) fflush(stdout);
1.1 cgd 1643: }
1.12 christos 1644: (void) Lst_AtFront(stoppedJobs, (ClientData)job);
1.1 cgd 1645: jobFull = TRUE;
1646: if (DEBUG(JOB)) {
1.12 christos 1647: (void) fprintf(stdout, "Job queue is full.\n");
1648: (void) fflush(stdout);
1.1 cgd 1649: }
1650: }
1651: }
1652: }
1653:
1654: /*-
1655: *-----------------------------------------------------------------------
1656: * JobStart --
1657: * Start a target-creation process going for the target described
1.16 christos 1658: * by the graph node gn.
1.1 cgd 1659: *
1660: * Results:
1661: * JOB_ERROR if there was an error in the commands, JOB_FINISHED
1662: * if there isn't actually anything left to do for the job and
1663: * JOB_RUNNING if the job has been started.
1664: *
1665: * Side Effects:
1666: * A new Job node is created and added to the list of running
1667: * jobs. PMake is forked and a child shell created.
1668: *-----------------------------------------------------------------------
1669: */
1670: static int
1.12 christos 1671: JobStart(gn, flags, previous)
1.1 cgd 1672: GNode *gn; /* target to create */
1.6 jtc 1673: int flags; /* flags for the job to override normal ones.
1.1 cgd 1674: * e.g. JOB_SPECIAL or JOB_IGNDOTS */
1675: Job *previous; /* The previous Job structure for this node,
1676: * if any. */
1677: {
1678: register Job *job; /* new job descriptor */
1.29 christos 1679: char *argv[10]; /* Argument vector to shell */
1.1 cgd 1680: Boolean cmdsOK; /* true if the nodes commands were all right */
1681: Boolean local; /* Set true if the job was run locally */
1682: Boolean noExec; /* Set true if we decide not to run the job */
1.31 christos 1683: int tfd; /* File descriptor to the temp file */
1.1 cgd 1684:
1.12 christos 1685: if (previous != NULL) {
1686: previous->flags &= ~(JOB_FIRST|JOB_IGNERR|JOB_SILENT|JOB_REMOTE);
1.1 cgd 1687: job = previous;
1688: } else {
1.12 christos 1689: job = (Job *) emalloc(sizeof(Job));
1690: if (job == NULL) {
1.1 cgd 1691: Punt("JobStart out of memory");
1692: }
1693: flags |= JOB_FIRST;
1694: }
1695:
1696: job->node = gn;
1697: job->tailCmds = NILLNODE;
1698:
1699: /*
1700: * Set the initial value of the flags for this job based on the global
1701: * ones and the node's attributes... Any flags supplied by the caller
1702: * are also added to the field.
1703: */
1704: job->flags = 0;
1.12 christos 1705: if (Targ_Ignore(gn)) {
1.1 cgd 1706: job->flags |= JOB_IGNERR;
1707: }
1.12 christos 1708: if (Targ_Silent(gn)) {
1.1 cgd 1709: job->flags |= JOB_SILENT;
1710: }
1711: job->flags |= flags;
1712:
1713: /*
1714: * Check the commands now so any attributes from .DEFAULT have a chance
1715: * to migrate to the node
1716: */
1.12 christos 1717: if (!compatMake && job->flags & JOB_FIRST) {
1.1 cgd 1718: cmdsOK = Job_CheckCommands(gn, Error);
1719: } else {
1720: cmdsOK = TRUE;
1721: }
1.16 christos 1722:
1.1 cgd 1723: /*
1.16 christos 1724: * If the -n flag wasn't given, we open up OUR (not the child's)
1.1 cgd 1725: * temporary file to stuff commands in it. The thing is rd/wr so we don't
1726: * need to reopen it to feed it to the shell. If the -n flag *was* given,
1727: * we just set the file to be stdout. Cute, huh?
1728: */
1729: if ((gn->type & OP_MAKE) || (!noExecute && !touchFlag)) {
1730: /*
1.34 ! christos 1731: * tfile is the name of a file into which all shell commands are
! 1732: * put. It is used over by removing it before the child shell is
! 1733: * executed. The XXXXXX in the string are replaced by the pid of
! 1734: * the make process in a 6-character field with leading zeroes.
! 1735: */
! 1736: char tfile[sizeof(TMPPAT)];
! 1737: /*
1.1 cgd 1738: * We're serious here, but if the commands were bogus, we're
1739: * also dead...
1740: */
1741: if (!cmdsOK) {
1742: DieHorribly();
1743: }
1.16 christos 1744:
1.34 ! christos 1745: (void)strcpy(tfile, TMPPAT);
1.31 christos 1746: if ((tfd = mkstemp(tfile)) == -1)
1747: Punt("Could not create temporary file %s", strerror(errno));
1748: (void) eunlink(tfile);
1749:
1750: job->cmdFILE = fdopen(tfd, "w+");
1.12 christos 1751: if (job->cmdFILE == NULL) {
1.31 christos 1752: Punt("Could not fdopen %s", tfile);
1.1 cgd 1753: }
1.12 christos 1754: (void) fcntl(FILENO(job->cmdFILE), F_SETFD, 1);
1.1 cgd 1755: /*
1756: * Send the commands to the command file, flush all its buffers then
1757: * rewind and remove the thing.
1758: */
1759: noExec = FALSE;
1760:
1761: /*
1762: * used to be backwards; replace when start doing multiple commands
1763: * per shell.
1764: */
1.5 cgd 1765: if (compatMake) {
1.1 cgd 1766: /*
1767: * Be compatible: If this is the first time for this node,
1768: * verify its commands are ok and open the commands list for
1769: * sequential access by later invocations of JobStart.
1770: * Once that is done, we take the next command off the list
1771: * and print it to the command file. If the command was an
1772: * ellipsis, note that there's nothing more to execute.
1773: */
1774: if ((job->flags&JOB_FIRST) && (Lst_Open(gn->commands) != SUCCESS)){
1775: cmdsOK = FALSE;
1776: } else {
1.12 christos 1777: LstNode ln = Lst_Next(gn->commands);
1.16 christos 1778:
1.1 cgd 1779: if ((ln == NILLNODE) ||
1.12 christos 1780: JobPrintCommand((ClientData) Lst_Datum(ln),
1781: (ClientData) job))
1.1 cgd 1782: {
1783: noExec = TRUE;
1.12 christos 1784: Lst_Close(gn->commands);
1.1 cgd 1785: }
1786: if (noExec && !(job->flags & JOB_FIRST)) {
1787: /*
1788: * If we're not going to execute anything, the job
1789: * is done and we need to close down the various
1790: * file descriptors we've opened for output, then
1791: * call JobDoOutput to catch the final characters or
1792: * send the file to the screen... Note that the i/o streams
1793: * are only open if this isn't the first job.
1794: * Note also that this could not be done in
1795: * Job_CatchChildren b/c it wasn't clear if there were
1796: * more commands to execute or not...
1797: */
1.12 christos 1798: JobClose(job);
1.1 cgd 1799: }
1800: }
1801: } else {
1802: /*
1803: * We can do all the commands at once. hooray for sanity
1804: */
1805: numCommands = 0;
1.12 christos 1806: Lst_ForEach(gn->commands, JobPrintCommand, (ClientData)job);
1.16 christos 1807:
1.1 cgd 1808: /*
1809: * If we didn't print out any commands to the shell script,
1810: * there's not much point in executing the shell, is there?
1811: */
1812: if (numCommands == 0) {
1813: noExec = TRUE;
1814: }
1815: }
1816: } else if (noExecute) {
1817: /*
1818: * Not executing anything -- just print all the commands to stdout
1819: * in one fell swoop. This will still set up job->tailCmds correctly.
1820: */
1821: if (lastNode != gn) {
1.12 christos 1822: MESSAGE(stdout, gn);
1.1 cgd 1823: lastNode = gn;
1824: }
1825: job->cmdFILE = stdout;
1826: /*
1827: * Only print the commands if they're ok, but don't die if they're
1828: * not -- just let the user know they're bad and keep going. It
1829: * doesn't do any harm in this case and may do some good.
1830: */
1831: if (cmdsOK) {
1832: Lst_ForEach(gn->commands, JobPrintCommand, (ClientData)job);
1833: }
1834: /*
1835: * Don't execute the shell, thank you.
1836: */
1837: noExec = TRUE;
1838: } else {
1839: /*
1840: * Just touch the target and note that no shell should be executed.
1841: * Set cmdFILE to stdout to make life easier. Check the commands, too,
1842: * but don't die if they're no good -- it does no harm to keep working
1843: * up the graph.
1844: */
1845: job->cmdFILE = stdout;
1.12 christos 1846: Job_Touch(gn, job->flags&JOB_SILENT);
1.1 cgd 1847: noExec = TRUE;
1848: }
1849:
1850: /*
1.16 christos 1851: * If we're not supposed to execute a shell, don't.
1.1 cgd 1852: */
1853: if (noExec) {
1854: /*
1855: * Unlink and close the command file if we opened one
1856: */
1857: if (job->cmdFILE != stdout) {
1.34 ! christos 1858: if (job->cmdFILE != NULL) {
1.12 christos 1859: (void) fclose(job->cmdFILE);
1.34 ! christos 1860: job->cmdFILE = NULL;
! 1861: }
1.1 cgd 1862: } else {
1.12 christos 1863: (void) fflush(stdout);
1.1 cgd 1864: }
1865:
1866: /*
1867: * We only want to work our way up the graph if we aren't here because
1868: * the commands for the job were no good.
1869: */
1870: if (cmdsOK) {
1871: if (aborting == 0) {
1872: if (job->tailCmds != NILLNODE) {
1873: Lst_ForEachFrom(job->node->commands, job->tailCmds,
1874: JobSaveCommand,
1.12 christos 1875: (ClientData)job->node);
1.1 cgd 1876: }
1877: Make_Update(job->node);
1878: }
1879: free((Address)job);
1880: return(JOB_FINISHED);
1881: } else {
1882: free((Address)job);
1883: return(JOB_ERROR);
1884: }
1885: } else {
1.12 christos 1886: (void) fflush(job->cmdFILE);
1.1 cgd 1887: }
1888:
1889: /*
1890: * Set up the control arguments to the shell. This is based on the flags
1891: * set earlier for this job.
1892: */
1893: JobMakeArgv(job, argv);
1894:
1895: /*
1896: * If we're using pipes to catch output, create the pipe by which we'll
1897: * get the shell's output. If we're using files, print out that we're
1.31 christos 1898: * starting a job and then set up its temporary-file name.
1.1 cgd 1899: */
1.12 christos 1900: if (!compatMake || (job->flags & JOB_FIRST)) {
1.1 cgd 1901: if (usePipes) {
1902: int fd[2];
1.12 christos 1903: if (pipe(fd) == -1)
1904: Punt("Cannot create pipe: %s", strerror(errno));
1.1 cgd 1905: job->inPipe = fd[0];
1906: job->outPipe = fd[1];
1.12 christos 1907: (void) fcntl(job->inPipe, F_SETFD, 1);
1908: (void) fcntl(job->outPipe, F_SETFD, 1);
1.1 cgd 1909: } else {
1.12 christos 1910: (void) fprintf(stdout, "Remaking `%s'\n", gn->name);
1911: (void) fflush(stdout);
1.31 christos 1912: (void) strcpy(job->outFile, TMPPAT);
1913: job->outFd = mkstemp(job->outFile);
1.12 christos 1914: (void) fcntl(job->outFd, F_SETFD, 1);
1.1 cgd 1915: }
1916: }
1917:
1.12 christos 1918: #ifdef REMOTE
1919: if (!(gn->type & OP_NOEXPORT) && !(runLocalFirst && nLocal < maxLocal)) {
1920: #ifdef RMT_NO_EXEC
1921: local = !Rmt_Export(shellPath, argv, job);
1922: #else
1923: local = !Rmt_Begin(shellPath, argv, job->node);
1924: #endif /* RMT_NO_EXEC */
1925: if (!local) {
1926: job->flags |= JOB_REMOTE;
1927: }
1928: } else
1929: #endif
1930: local = TRUE;
1.1 cgd 1931:
1932: if (local && (((nLocal >= maxLocal) &&
1.12 christos 1933: !(job->flags & JOB_SPECIAL) &&
1934: #ifdef REMOTE
1935: (!(gn->type & OP_NOEXPORT) || (maxLocal != 0))
1936: #else
1937: (maxLocal != 0)
1938: #endif
1939: )))
1.1 cgd 1940: {
1941: /*
1942: * The job can only be run locally, but we've hit the limit of
1943: * local concurrency, so put the job on hold until some other job
1.16 christos 1944: * finishes. Note that the special jobs (.BEGIN, .INTERRUPT and .END)
1.1 cgd 1945: * may be run locally even when the local limit has been reached
1.16 christos 1946: * (e.g. when maxLocal == 0), though they will be exported if at
1.12 christos 1947: * all possible. In addition, any target marked with .NOEXPORT will
1948: * be run locally if maxLocal is 0.
1.1 cgd 1949: */
1950: jobFull = TRUE;
1.16 christos 1951:
1.1 cgd 1952: if (DEBUG(JOB)) {
1.12 christos 1953: (void) fprintf(stdout, "Can only run job locally.\n");
1954: (void) fflush(stdout);
1.1 cgd 1955: }
1956: job->flags |= JOB_RESTART;
1.12 christos 1957: (void) Lst_AtEnd(stoppedJobs, (ClientData)job);
1.1 cgd 1958: } else {
1959: if ((nLocal >= maxLocal) && local) {
1960: /*
1.16 christos 1961: * If we're running this job locally as a special case (see above),
1.1 cgd 1962: * at least say the table is full.
1963: */
1964: jobFull = TRUE;
1965: if (DEBUG(JOB)) {
1.12 christos 1966: (void) fprintf(stdout, "Local job queue is full.\n");
1967: (void) fflush(stdout);
1.1 cgd 1968: }
1969: }
1970: JobExec(job, argv);
1971: }
1972: return(JOB_RUNNING);
1973: }
1974:
1.16 christos 1975: static char *
1.12 christos 1976: JobOutput(job, cp, endp, msg)
1977: register Job *job;
1978: register char *cp, *endp;
1979: int msg;
1980: {
1981: register char *ecp;
1982:
1983: if (commandShell->noPrint) {
1984: ecp = Str_FindSubstring(cp, commandShell->noPrint);
1985: while (ecp != NULL) {
1986: if (cp != ecp) {
1987: *ecp = '\0';
1988: if (msg && job->node != lastNode) {
1989: MESSAGE(stdout, job->node);
1990: lastNode = job->node;
1991: }
1992: /*
1993: * The only way there wouldn't be a newline after
1994: * this line is if it were the last in the buffer.
1995: * however, since the non-printable comes after it,
1996: * there must be a newline, so we don't print one.
1997: */
1998: (void) fprintf(stdout, "%s", cp);
1999: (void) fflush(stdout);
2000: }
2001: cp = ecp + commandShell->noPLen;
2002: if (cp != endp) {
2003: /*
2004: * Still more to print, look again after skipping
2005: * the whitespace following the non-printable
2006: * command....
2007: */
2008: cp++;
2009: while (*cp == ' ' || *cp == '\t' || *cp == '\n') {
2010: cp++;
2011: }
2012: ecp = Str_FindSubstring(cp, commandShell->noPrint);
2013: } else {
2014: return cp;
2015: }
2016: }
2017: }
2018: return cp;
2019: }
2020:
1.1 cgd 2021: /*-
2022: *-----------------------------------------------------------------------
2023: * JobDoOutput --
2024: * This function is called at different times depending on
2025: * whether the user has specified that output is to be collected
2026: * via pipes or temporary files. In the former case, we are called
2027: * whenever there is something to read on the pipe. We collect more
2028: * output from the given job and store it in the job's outBuf. If
2029: * this makes up a line, we print it tagged by the job's identifier,
2030: * as necessary.
2031: * If output has been collected in a temporary file, we open the
2032: * file and read it line by line, transfering it to our own
2033: * output channel until the file is empty. At which point we
2034: * remove the temporary file.
2035: * In both cases, however, we keep our figurative eye out for the
2036: * 'noPrint' line for the shell from which the output came. If
2037: * we recognize a line, we don't print it. If the command is not
1.16 christos 2038: * alone on the line (the character after it is not \0 or \n), we
1.1 cgd 2039: * do print whatever follows it.
2040: *
2041: * Results:
2042: * None
2043: *
2044: * Side Effects:
2045: * curPos may be shifted as may the contents of outBuf.
2046: *-----------------------------------------------------------------------
2047: */
1.12 christos 2048: STATIC void
2049: JobDoOutput(job, finish)
1.1 cgd 2050: register Job *job; /* the job whose output needs printing */
2051: Boolean finish; /* TRUE if this is the last time we'll be
2052: * called for this job */
2053: {
2054: Boolean gotNL = FALSE; /* true if got a newline */
1.12 christos 2055: Boolean fbuf; /* true if our buffer filled up */
1.1 cgd 2056: register int nr; /* number of bytes read */
2057: register int i; /* auxiliary index into outBuf */
1.16 christos 2058: register int max; /* limit for i (end of current data) */
2059: int nRead; /* (Temporary) number of bytes read */
1.1 cgd 2060:
2061: FILE *oFILE; /* Stream pointer to shell's output file */
2062: char inLine[132];
2063:
1.16 christos 2064:
1.1 cgd 2065: if (usePipes) {
2066: /*
2067: * Read as many bytes as will fit in the buffer.
2068: */
2069: end_loop:
1.12 christos 2070: gotNL = FALSE;
2071: fbuf = FALSE;
1.16 christos 2072:
1.12 christos 2073: nRead = read(job->inPipe, &job->outBuf[job->curPos],
1.1 cgd 2074: JOB_BUFSIZE - job->curPos);
2075: if (nRead < 0) {
2076: if (DEBUG(JOB)) {
2077: perror("JobDoOutput(piperead)");
2078: }
2079: nr = 0;
2080: } else {
2081: nr = nRead;
2082: }
2083:
2084: /*
1.16 christos 2085: * If we hit the end-of-file (the job is dead), we must flush its
1.1 cgd 2086: * remaining output, so pretend we read a newline if there's any
2087: * output remaining in the buffer.
2088: * Also clear the 'finish' flag so we stop looping.
2089: */
2090: if ((nr == 0) && (job->curPos != 0)) {
2091: job->outBuf[job->curPos] = '\n';
2092: nr = 1;
2093: finish = FALSE;
2094: } else if (nr == 0) {
2095: finish = FALSE;
2096: }
1.16 christos 2097:
1.1 cgd 2098: /*
2099: * Look for the last newline in the bytes we just got. If there is
2100: * one, break out of the loop with 'i' as its index and gotNL set
1.16 christos 2101: * TRUE.
1.1 cgd 2102: */
2103: max = job->curPos + nr;
2104: for (i = job->curPos + nr - 1; i >= job->curPos; i--) {
2105: if (job->outBuf[i] == '\n') {
2106: gotNL = TRUE;
2107: break;
2108: } else if (job->outBuf[i] == '\0') {
2109: /*
2110: * Why?
2111: */
2112: job->outBuf[i] = ' ';
2113: }
2114: }
1.16 christos 2115:
1.1 cgd 2116: if (!gotNL) {
2117: job->curPos += nr;
2118: if (job->curPos == JOB_BUFSIZE) {
2119: /*
2120: * If we've run out of buffer space, we have no choice
1.16 christos 2121: * but to print the stuff. sigh.
1.1 cgd 2122: */
1.12 christos 2123: fbuf = TRUE;
1.1 cgd 2124: i = job->curPos;
2125: }
2126: }
1.12 christos 2127: if (gotNL || fbuf) {
1.1 cgd 2128: /*
2129: * Need to send the output to the screen. Null terminate it
2130: * first, overwriting the newline character if there was one.
1.16 christos 2131: * So long as the line isn't one we should filter (according
1.1 cgd 2132: * to the shell description), we print the line, preceeded
2133: * by a target banner if this target isn't the same as the
2134: * one for which we last printed something.
2135: * The rest of the data in the buffer are then shifted down
1.16 christos 2136: * to the start of the buffer and curPos is set accordingly.
1.1 cgd 2137: */
2138: job->outBuf[i] = '\0';
2139: if (i >= job->curPos) {
1.12 christos 2140: char *cp;
1.16 christos 2141:
2142: cp = JobOutput(job, job->outBuf, &job->outBuf[i], FALSE);
1.1 cgd 2143:
2144: /*
2145: * There's still more in that thar buffer. This time, though,
2146: * we know there's no newline at the end, so we add one of
2147: * our own free will.
2148: */
2149: if (*cp != '\0') {
2150: if (job->node != lastNode) {
1.12 christos 2151: MESSAGE(stdout, job->node);
1.1 cgd 2152: lastNode = job->node;
2153: }
1.12 christos 2154: (void) fprintf(stdout, "%s%s", cp, gotNL ? "\n" : "");
2155: (void) fflush(stdout);
1.1 cgd 2156: }
2157: }
2158: if (i < max - 1) {
1.5 cgd 2159: /* shift the remaining characters down */
1.16 christos 2160: (void) memcpy(job->outBuf, &job->outBuf[i + 1], max - (i + 1));
2161: job->curPos = max - (i + 1);
2162:
1.1 cgd 2163: } else {
2164: /*
2165: * We have written everything out, so we just start over
2166: * from the start of the buffer. No copying. No nothing.
2167: */
2168: job->curPos = 0;
2169: }
2170: }
2171: if (finish) {
2172: /*
2173: * If the finish flag is true, we must loop until we hit
1.16 christos 2174: * end-of-file on the pipe. This is guaranteed to happen
2175: * eventually since the other end of the pipe is now closed
2176: * (we closed it explicitly and the child has exited). When
2177: * we do get an EOF, finish will be set FALSE and we'll fall
2178: * through and out.
1.1 cgd 2179: */
2180: goto end_loop;
2181: }
2182: } else {
2183: /*
2184: * We've been called to retrieve the output of the job from the
2185: * temporary file where it's been squirreled away. This consists of
2186: * opening the file, reading the output line by line, being sure not
2187: * to print the noPrint line for the shell we used, then close and
2188: * remove the temporary file. Very simple.
2189: *
2190: * Change to read in blocks and do FindSubString type things as for
2191: * pipes? That would allow for "@echo -n..."
2192: */
1.12 christos 2193: oFILE = fopen(job->outFile, "r");
2194: if (oFILE != NULL) {
2195: (void) fprintf(stdout, "Results of making %s:\n", job->node->name);
2196: (void) fflush(stdout);
2197: while (fgets(inLine, sizeof(inLine), oFILE) != NULL) {
2198: register char *cp, *endp, *oendp;
1.1 cgd 2199:
2200: cp = inLine;
1.12 christos 2201: oendp = endp = inLine + strlen(inLine);
1.1 cgd 2202: if (endp[-1] == '\n') {
2203: *--endp = '\0';
2204: }
1.12 christos 2205: cp = JobOutput(job, inLine, endp, FALSE);
1.1 cgd 2206:
2207: /*
2208: * There's still more in that thar buffer. This time, though,
2209: * we know there's no newline at the end, so we add one of
2210: * our own free will.
2211: */
1.12 christos 2212: (void) fprintf(stdout, "%s", cp);
2213: (void) fflush(stdout);
2214: if (endp != oendp) {
2215: (void) fprintf(stdout, "\n");
2216: (void) fflush(stdout);
1.1 cgd 2217: }
2218: }
1.12 christos 2219: (void) fclose(oFILE);
2220: (void) eunlink(job->outFile);
1.34 ! christos 2221: } else {
! 2222: Punt("Cannot open `%s'", job->outFile);
1.1 cgd 2223: }
2224: }
2225: }
2226:
2227: /*-
2228: *-----------------------------------------------------------------------
2229: * Job_CatchChildren --
2230: * Handle the exit of a child. Called from Make_Make.
2231: *
2232: * Results:
2233: * none.
2234: *
2235: * Side Effects:
2236: * The job descriptor is removed from the list of children.
2237: *
2238: * Notes:
2239: * We do waits, blocking or not, according to the wisdom of our
2240: * caller, until there are no more children to report. For each
2241: * job, call JobFinish to finish things off. This will take care of
2242: * putting jobs on the stoppedJobs queue.
2243: *
2244: *-----------------------------------------------------------------------
2245: */
2246: void
1.12 christos 2247: Job_CatchChildren(block)
1.1 cgd 2248: Boolean block; /* TRUE if should block on the wait. */
2249: {
2250: int pid; /* pid of dead child */
2251: register Job *job; /* job descriptor for dead child */
2252: LstNode jnode; /* list element for finding job */
1.13 christos 2253: int status; /* Exit/termination status */
1.1 cgd 2254:
2255: /*
2256: * Don't even bother if we know there's no one around.
2257: */
2258: if (nLocal == 0) {
2259: return;
2260: }
1.16 christos 2261:
1.13 christos 2262: while ((pid = waitpid((pid_t) -1, &status,
2263: (block?0:WNOHANG)|WUNTRACED)) > 0)
1.1 cgd 2264: {
1.12 christos 2265: if (DEBUG(JOB)) {
1.28 christos 2266: (void) fprintf(stdout, "Process %d exited or stopped %x.\n", pid,
2267: status);
1.12 christos 2268: (void) fflush(stdout);
2269: }
1.16 christos 2270:
1.1 cgd 2271:
1.12 christos 2272: jnode = Lst_Find(jobs, (ClientData)&pid, JobCmpPid);
1.1 cgd 2273:
2274: if (jnode == NILLNODE) {
1.28 christos 2275: if (WIFSTOPPED(status) && (WSTOPSIG(status) == SIGCONT)) {
1.6 jtc 2276: jnode = Lst_Find(stoppedJobs, (ClientData) &pid, JobCmpPid);
1.1 cgd 2277: if (jnode == NILLNODE) {
1.16 christos 2278: Error("Resumed child (%d) not in table", pid);
1.1 cgd 2279: continue;
2280: }
2281: job = (Job *)Lst_Datum(jnode);
1.12 christos 2282: (void) Lst_Remove(stoppedJobs, jnode);
1.1 cgd 2283: } else {
1.16 christos 2284: Error("Child (%d) not in table?", pid);
1.1 cgd 2285: continue;
2286: }
2287: } else {
1.12 christos 2288: job = (Job *) Lst_Datum(jnode);
2289: (void) Lst_Remove(jobs, jnode);
1.1 cgd 2290: nJobs -= 1;
2291: if (jobFull && DEBUG(JOB)) {
1.12 christos 2292: (void) fprintf(stdout, "Job queue is no longer full.\n");
2293: (void) fflush(stdout);
1.1 cgd 2294: }
2295: jobFull = FALSE;
1.12 christos 2296: #ifdef REMOTE
2297: if (!(job->flags & JOB_REMOTE)) {
2298: if (DEBUG(JOB)) {
2299: (void) fprintf(stdout,
2300: "Job queue has one fewer local process.\n");
2301: (void) fflush(stdout);
2302: }
2303: nLocal -= 1;
2304: }
2305: #else
1.1 cgd 2306: nLocal -= 1;
1.12 christos 2307: #endif
1.1 cgd 2308: }
2309:
1.12 christos 2310: JobFinish(job, &status);
1.1 cgd 2311: }
2312: }
2313:
2314: /*-
2315: *-----------------------------------------------------------------------
2316: * Job_CatchOutput --
2317: * Catch the output from our children, if we're using
2318: * pipes do so. Otherwise just block time until we get a
1.16 christos 2319: * signal (most likely a SIGCHLD) since there's no point in
1.1 cgd 2320: * just spinning when there's nothing to do and the reaping
1.16 christos 2321: * of a child can wait for a while.
1.1 cgd 2322: *
2323: * Results:
1.16 christos 2324: * None
1.1 cgd 2325: *
2326: * Side Effects:
2327: * Output is read from pipes if we're piping.
2328: * -----------------------------------------------------------------------
2329: */
2330: void
1.12 christos 2331: Job_CatchOutput()
1.1 cgd 2332: {
2333: int nfds;
2334: struct timeval timeout;
2335: fd_set readfds;
2336: register LstNode ln;
2337: register Job *job;
1.5 cgd 2338: #ifdef RMT_WILL_WATCH
1.1 cgd 2339: int pnJobs; /* Previous nJobs */
1.5 cgd 2340: #endif
1.1 cgd 2341:
1.12 christos 2342: (void) fflush(stdout);
1.1 cgd 2343: #ifdef RMT_WILL_WATCH
2344: pnJobs = nJobs;
2345:
2346: /*
2347: * It is possible for us to be called with nJobs equal to 0. This happens
2348: * if all the jobs finish and a job that is stopped cannot be run
2349: * locally (eg if maxLocal is 0) and cannot be exported. The job will
2350: * be placed back on the stoppedJobs queue, Job_Empty() will return false,
2351: * Make_Run will call us again when there's nothing for which to wait.
2352: * nJobs never changes, so we loop forever. Hence the check. It could
2353: * be argued that we should sleep for a bit so as not to swamp the
2354: * exportation system with requests. Perhaps we should.
2355: *
2356: * NOTE: IT IS THE RESPONSIBILITY OF Rmt_Wait TO CALL Job_CatchChildren
2357: * IN A TIMELY FASHION TO CATCH ANY LOCALLY RUNNING JOBS THAT EXIT.
2358: * It may use the variable nLocal to determine if it needs to call
1.16 christos 2359: * Job_CatchChildren (if nLocal is 0, there's nothing for which to
1.1 cgd 2360: * wait...)
2361: */
2362: while (nJobs != 0 && pnJobs == nJobs) {
2363: Rmt_Wait();
2364: }
2365: #else
2366: if (usePipes) {
2367: readfds = outputs;
2368: timeout.tv_sec = SEL_SEC;
2369: timeout.tv_usec = SEL_USEC;
2370:
1.12 christos 2371: if ((nfds = select(FD_SETSIZE, &readfds, (fd_set *) 0,
2372: (fd_set *) 0, &timeout)) <= 0)
1.1 cgd 2373: return;
1.12 christos 2374: else {
2375: if (Lst_Open(jobs) == FAILURE) {
2376: Punt("Cannot open job table");
1.1 cgd 2377: }
1.12 christos 2378: while (nfds && (ln = Lst_Next(jobs)) != NILLNODE) {
2379: job = (Job *) Lst_Datum(ln);
1.1 cgd 2380: if (FD_ISSET(job->inPipe, &readfds)) {
1.12 christos 2381: JobDoOutput(job, FALSE);
1.1 cgd 2382: nfds -= 1;
2383: }
2384: }
1.12 christos 2385: Lst_Close(jobs);
1.1 cgd 2386: }
2387: }
2388: #endif /* RMT_WILL_WATCH */
2389: }
2390:
2391: /*-
2392: *-----------------------------------------------------------------------
2393: * Job_Make --
2394: * Start the creation of a target. Basically a front-end for
2395: * JobStart used by the Make module.
2396: *
2397: * Results:
2398: * None.
2399: *
2400: * Side Effects:
2401: * Another job is started.
2402: *
2403: *-----------------------------------------------------------------------
2404: */
2405: void
1.12 christos 2406: Job_Make(gn)
1.1 cgd 2407: GNode *gn;
2408: {
1.12 christos 2409: (void) JobStart(gn, 0, NULL);
1.1 cgd 2410: }
2411:
2412: /*-
2413: *-----------------------------------------------------------------------
2414: * Job_Init --
2415: * Initialize the process module
2416: *
2417: * Results:
2418: * none
2419: *
2420: * Side Effects:
2421: * lists and counters are initialized
2422: *-----------------------------------------------------------------------
2423: */
2424: void
1.12 christos 2425: Job_Init(maxproc, maxlocal)
1.1 cgd 2426: int maxproc; /* the greatest number of jobs which may be
2427: * running at one time */
2428: int maxlocal; /* the greatest number of local jobs which may
2429: * be running at once. */
2430: {
2431: GNode *begin; /* node for commands to do at the very start */
2432:
1.12 christos 2433: jobs = Lst_Init(FALSE);
1.1 cgd 2434: stoppedJobs = Lst_Init(FALSE);
2435: maxJobs = maxproc;
2436: maxLocal = maxlocal;
2437: nJobs = 0;
2438: nLocal = 0;
2439: jobFull = FALSE;
2440:
2441: aborting = 0;
2442: errors = 0;
2443:
2444: lastNode = NILGNODE;
2445:
1.12 christos 2446: if (maxJobs == 1
2447: #ifdef REMOTE
2448: || noMessages
2449: #endif
2450: ) {
1.1 cgd 2451: /*
2452: * If only one job can run at a time, there's no need for a banner,
2453: * no is there?
2454: */
2455: targFmt = "";
2456: } else {
2457: targFmt = TARG_FMT;
2458: }
1.16 christos 2459:
1.12 christos 2460: if (shellPath == NULL) {
1.1 cgd 2461: /*
2462: * The user didn't specify a shell to use, so we are using the
2463: * default one... Both the absolute path and the last component
2464: * must be set. The last component is taken from the 'name' field
2465: * of the default shell description pointed-to by commandShell.
2466: * All default shells are located in _PATH_DEFSHELLDIR.
2467: */
2468: shellName = commandShell->name;
1.12 christos 2469: shellPath = str_concat(_PATH_DEFSHELLDIR, shellName, STR_ADDSLASH);
1.1 cgd 2470: }
2471:
1.12 christos 2472: if (commandShell->exit == NULL) {
1.1 cgd 2473: commandShell->exit = "";
2474: }
1.12 christos 2475: if (commandShell->echo == NULL) {
1.1 cgd 2476: commandShell->echo = "";
2477: }
2478:
2479: /*
2480: * Catch the four signals that POSIX specifies if they aren't ignored.
2481: * JobPassSig will take care of calling JobInterrupt if appropriate.
2482: */
1.12 christos 2483: if (signal(SIGINT, SIG_IGN) != SIG_IGN) {
2484: (void) signal(SIGINT, JobPassSig);
1.1 cgd 2485: }
1.12 christos 2486: if (signal(SIGHUP, SIG_IGN) != SIG_IGN) {
2487: (void) signal(SIGHUP, JobPassSig);
1.1 cgd 2488: }
1.12 christos 2489: if (signal(SIGQUIT, SIG_IGN) != SIG_IGN) {
2490: (void) signal(SIGQUIT, JobPassSig);
1.1 cgd 2491: }
1.12 christos 2492: if (signal(SIGTERM, SIG_IGN) != SIG_IGN) {
2493: (void) signal(SIGTERM, JobPassSig);
1.1 cgd 2494: }
2495: /*
2496: * There are additional signals that need to be caught and passed if
2497: * either the export system wants to be told directly of signals or if
1.16 christos 2498: * we're giving each job its own process group (since then it won't get
1.1 cgd 2499: * signals from the terminal driver as we own the terminal)
2500: */
2501: #if defined(RMT_WANTS_SIGNALS) || defined(USE_PGRP)
1.12 christos 2502: if (signal(SIGTSTP, SIG_IGN) != SIG_IGN) {
2503: (void) signal(SIGTSTP, JobPassSig);
1.1 cgd 2504: }
1.12 christos 2505: if (signal(SIGTTOU, SIG_IGN) != SIG_IGN) {
2506: (void) signal(SIGTTOU, JobPassSig);
1.1 cgd 2507: }
1.12 christos 2508: if (signal(SIGTTIN, SIG_IGN) != SIG_IGN) {
2509: (void) signal(SIGTTIN, JobPassSig);
1.1 cgd 2510: }
1.12 christos 2511: if (signal(SIGWINCH, SIG_IGN) != SIG_IGN) {
2512: (void) signal(SIGWINCH, JobPassSig);
1.1 cgd 2513: }
2514: #endif
1.16 christos 2515:
1.12 christos 2516: begin = Targ_FindNode(".BEGIN", TARG_NOCREATE);
1.1 cgd 2517:
2518: if (begin != NILGNODE) {
1.12 christos 2519: JobStart(begin, JOB_SPECIAL, (Job *)0);
1.1 cgd 2520: while (nJobs) {
2521: Job_CatchOutput();
2522: #ifndef RMT_WILL_WATCH
1.12 christos 2523: Job_CatchChildren(!usePipes);
1.1 cgd 2524: #endif /* RMT_WILL_WATCH */
2525: }
2526: }
1.12 christos 2527: postCommands = Targ_FindNode(".END", TARG_CREATE);
1.1 cgd 2528: }
2529:
2530: /*-
2531: *-----------------------------------------------------------------------
2532: * Job_Full --
2533: * See if the job table is full. It is considered full if it is OR
2534: * if we are in the process of aborting OR if we have
2535: * reached/exceeded our local quota. This prevents any more jobs
2536: * from starting up.
2537: *
2538: * Results:
2539: * TRUE if the job table is full, FALSE otherwise
2540: * Side Effects:
2541: * None.
2542: *-----------------------------------------------------------------------
2543: */
2544: Boolean
1.12 christos 2545: Job_Full()
1.1 cgd 2546: {
1.12 christos 2547: return(aborting || jobFull);
1.1 cgd 2548: }
2549:
2550: /*-
2551: *-----------------------------------------------------------------------
2552: * Job_Empty --
2553: * See if the job table is empty. Because the local concurrency may
2554: * be set to 0, it is possible for the job table to become empty,
2555: * while the list of stoppedJobs remains non-empty. In such a case,
2556: * we want to restart as many jobs as we can.
2557: *
2558: * Results:
2559: * TRUE if it is. FALSE if it ain't.
2560: *
2561: * Side Effects:
2562: * None.
2563: *
2564: * -----------------------------------------------------------------------
2565: */
2566: Boolean
1.12 christos 2567: Job_Empty()
1.1 cgd 2568: {
2569: if (nJobs == 0) {
2570: if (!Lst_IsEmpty(stoppedJobs) && !aborting) {
2571: /*
2572: * The job table is obviously not full if it has no jobs in
2573: * it...Try and restart the stopped jobs.
2574: */
2575: jobFull = FALSE;
1.12 christos 2576: JobRestartJobs();
1.1 cgd 2577: return(FALSE);
2578: } else {
2579: return(TRUE);
2580: }
2581: } else {
2582: return(FALSE);
2583: }
2584: }
2585:
2586: /*-
2587: *-----------------------------------------------------------------------
2588: * JobMatchShell --
2589: * Find a matching shell in 'shells' given its final component.
2590: *
2591: * Results:
2592: * A pointer to the Shell structure.
2593: *
2594: * Side Effects:
2595: * None.
2596: *
2597: *-----------------------------------------------------------------------
2598: */
2599: static Shell *
1.12 christos 2600: JobMatchShell(name)
1.1 cgd 2601: char *name; /* Final component of shell path */
2602: {
2603: register Shell *sh; /* Pointer into shells table */
2604: Shell *match; /* Longest-matching shell */
2605: register char *cp1,
2606: *cp2;
2607: char *eoname;
2608:
1.12 christos 2609: eoname = name + strlen(name);
1.1 cgd 2610:
1.12 christos 2611: match = NULL;
1.1 cgd 2612:
2613: for (sh = shells; sh->name != NULL; sh++) {
1.12 christos 2614: for (cp1 = eoname - strlen(sh->name), cp2 = sh->name;
1.1 cgd 2615: *cp1 != '\0' && *cp1 == *cp2;
2616: cp1++, cp2++) {
2617: continue;
2618: }
2619: if (*cp1 != *cp2) {
2620: continue;
1.12 christos 2621: } else if (match == NULL || strlen(match->name) < strlen(sh->name)) {
2622: match = sh;
1.1 cgd 2623: }
2624: }
1.12 christos 2625: return(match == NULL ? sh : match);
1.1 cgd 2626: }
2627:
2628: /*-
2629: *-----------------------------------------------------------------------
2630: * Job_ParseShell --
2631: * Parse a shell specification and set up commandShell, shellPath
2632: * and shellName appropriately.
2633: *
2634: * Results:
2635: * FAILURE if the specification was incorrect.
2636: *
2637: * Side Effects:
2638: * commandShell points to a Shell structure (either predefined or
2639: * created from the shell spec), shellPath is the full path of the
2640: * shell described by commandShell, while shellName is just the
2641: * final component of shellPath.
2642: *
2643: * Notes:
2644: * A shell specification consists of a .SHELL target, with dependency
2645: * operator, followed by a series of blank-separated words. Double
2646: * quotes can be used to use blanks in words. A backslash escapes
2647: * anything (most notably a double-quote and a space) and
2648: * provides the functionality it does in C. Each word consists of
2649: * keyword and value separated by an equal sign. There should be no
2650: * unnecessary spaces in the word. The keywords are as follows:
2651: * name Name of shell.
2652: * path Location of shell. Overrides "name" if given
2653: * quiet Command to turn off echoing.
2654: * echo Command to turn echoing on
2655: * filter Result of turning off echoing that shouldn't be
2656: * printed.
2657: * echoFlag Flag to turn echoing on at the start
2658: * errFlag Flag to turn error checking on at the start
2659: * hasErrCtl True if shell has error checking control
2660: * check Command to turn on error checking if hasErrCtl
2661: * is TRUE or template of command to echo a command
2662: * for which error checking is off if hasErrCtl is
2663: * FALSE.
2664: * ignore Command to turn off error checking if hasErrCtl
2665: * is TRUE or template of command to execute a
2666: * command so as to ignore any errors it returns if
2667: * hasErrCtl is FALSE.
2668: *
2669: *-----------------------------------------------------------------------
2670: */
2671: ReturnStatus
1.12 christos 2672: Job_ParseShell(line)
1.1 cgd 2673: char *line; /* The shell spec */
2674: {
2675: char **words;
2676: int wordCount;
2677: register char **argv;
2678: register int argc;
2679: char *path;
2680: Shell newShell;
2681: Boolean fullSpec = FALSE;
2682:
1.24 christos 2683: while (isspace((unsigned char)*line)) {
1.1 cgd 2684: line++;
2685: }
1.22 christos 2686:
2687: if (shellArgv)
2688: free(shellArgv);
2689:
2690: words = brk_string(line, &wordCount, TRUE, &shellArgv);
1.1 cgd 2691:
1.12 christos 2692: memset((Address)&newShell, 0, sizeof(newShell));
1.16 christos 2693:
1.1 cgd 2694: /*
2695: * Parse the specification by keyword
2696: */
1.22 christos 2697: for (path = NULL, argc = wordCount - 1, argv = words;
2698: argc != 0;
2699: argc--, argv++) {
2700: if (strncmp(*argv, "path=", 5) == 0) {
2701: path = &argv[0][5];
2702: } else if (strncmp(*argv, "name=", 5) == 0) {
2703: newShell.name = &argv[0][5];
2704: } else {
2705: if (strncmp(*argv, "quiet=", 6) == 0) {
2706: newShell.echoOff = &argv[0][6];
2707: } else if (strncmp(*argv, "echo=", 5) == 0) {
2708: newShell.echoOn = &argv[0][5];
2709: } else if (strncmp(*argv, "filter=", 7) == 0) {
2710: newShell.noPrint = &argv[0][7];
2711: newShell.noPLen = strlen(newShell.noPrint);
2712: } else if (strncmp(*argv, "echoFlag=", 9) == 0) {
2713: newShell.echo = &argv[0][9];
2714: } else if (strncmp(*argv, "errFlag=", 8) == 0) {
2715: newShell.exit = &argv[0][8];
2716: } else if (strncmp(*argv, "hasErrCtl=", 10) == 0) {
2717: char c = argv[0][10];
2718: newShell.hasErrCtl = !((c != 'Y') && (c != 'y') &&
1.12 christos 2719: (c != 'T') && (c != 't'));
1.22 christos 2720: } else if (strncmp(*argv, "check=", 6) == 0) {
2721: newShell.errCheck = &argv[0][6];
2722: } else if (strncmp(*argv, "ignore=", 7) == 0) {
2723: newShell.ignErr = &argv[0][7];
2724: } else {
2725: Parse_Error(PARSE_FATAL, "Unknown keyword \"%s\"",
2726: *argv);
2727: free(words);
2728: return(FAILURE);
2729: }
2730: fullSpec = TRUE;
2731: }
1.1 cgd 2732: }
2733:
1.12 christos 2734: if (path == NULL) {
1.1 cgd 2735: /*
2736: * If no path was given, the user wants one of the pre-defined shells,
2737: * yes? So we find the one s/he wants with the help of JobMatchShell
2738: * and set things up the right way. shellPath will be set up by
2739: * Job_Init.
2740: */
1.12 christos 2741: if (newShell.name == NULL) {
2742: Parse_Error(PARSE_FATAL, "Neither path nor name specified");
2743: return(FAILURE);
1.1 cgd 2744: } else {
1.12 christos 2745: commandShell = JobMatchShell(newShell.name);
1.1 cgd 2746: shellName = newShell.name;
2747: }
2748: } else {
2749: /*
1.16 christos 2750: * The user provided a path. If s/he gave nothing else (fullSpec is
1.1 cgd 2751: * FALSE), try and find a matching shell in the ones we know of.
2752: * Else we just take the specification at its word and copy it
2753: * to a new location. In either case, we need to record the
2754: * path the user gave for the shell.
2755: */
2756: shellPath = path;
1.12 christos 2757: path = strrchr(path, '/');
2758: if (path == NULL) {
1.1 cgd 2759: path = shellPath;
2760: } else {
2761: path += 1;
2762: }
1.12 christos 2763: if (newShell.name != NULL) {
1.1 cgd 2764: shellName = newShell.name;
2765: } else {
2766: shellName = path;
2767: }
2768: if (!fullSpec) {
1.12 christos 2769: commandShell = JobMatchShell(shellName);
1.1 cgd 2770: } else {
2771: commandShell = (Shell *) emalloc(sizeof(Shell));
2772: *commandShell = newShell;
2773: }
2774: }
2775:
2776: if (commandShell->echoOn && commandShell->echoOff) {
2777: commandShell->hasEchoCtl = TRUE;
2778: }
1.16 christos 2779:
1.1 cgd 2780: if (!commandShell->hasErrCtl) {
1.12 christos 2781: if (commandShell->errCheck == NULL) {
1.1 cgd 2782: commandShell->errCheck = "";
2783: }
1.12 christos 2784: if (commandShell->ignErr == NULL) {
1.1 cgd 2785: commandShell->ignErr = "%s\n";
2786: }
2787: }
1.16 christos 2788:
1.1 cgd 2789: /*
2790: * Do not free up the words themselves, since they might be in use by the
1.22 christos 2791: * shell specification.
1.1 cgd 2792: */
1.12 christos 2793: free(words);
1.1 cgd 2794: return SUCCESS;
2795: }
2796:
2797: /*-
2798: *-----------------------------------------------------------------------
2799: * JobInterrupt --
2800: * Handle the receipt of an interrupt.
2801: *
2802: * Results:
2803: * None
2804: *
2805: * Side Effects:
2806: * All children are killed. Another job will be started if the
2807: * .INTERRUPT target was given.
2808: *-----------------------------------------------------------------------
2809: */
2810: static void
1.12 christos 2811: JobInterrupt(runINTERRUPT, signo)
1.1 cgd 2812: int runINTERRUPT; /* Non-zero if commands for the .INTERRUPT
2813: * target should be executed */
1.12 christos 2814: int signo; /* signal received */
1.1 cgd 2815: {
2816: LstNode ln; /* element in job table */
2817: Job *job; /* job descriptor in that element */
2818: GNode *interrupt; /* the node describing the .INTERRUPT target */
1.16 christos 2819:
1.1 cgd 2820: aborting = ABORT_INTERRUPT;
2821:
1.12 christos 2822: (void) Lst_Open(jobs);
2823: while ((ln = Lst_Next(jobs)) != NILLNODE) {
2824: job = (Job *) Lst_Datum(ln);
1.1 cgd 2825:
1.12 christos 2826: if (!Targ_Precious(job->node)) {
2827: char *file = (job->node->path == NULL ?
1.1 cgd 2828: job->node->name :
2829: job->node->path);
1.12 christos 2830: if (!noExecute && eunlink(file) != -1) {
2831: Error("*** %s removed", file);
1.1 cgd 2832: }
2833: }
2834: #ifdef RMT_WANTS_SIGNALS
2835: if (job->flags & JOB_REMOTE) {
2836: /*
2837: * If job is remote, let the Rmt module do the killing.
2838: */
1.12 christos 2839: if (!Rmt_Signal(job, signo)) {
1.1 cgd 2840: /*
2841: * If couldn't kill the thing, finish it out now with an
2842: * error code, since no exit report will come in likely.
2843: */
1.13 christos 2844: int status;
1.1 cgd 2845:
2846: status.w_status = 0;
2847: status.w_retcode = 1;
1.12 christos 2848: JobFinish(job, &status);
1.1 cgd 2849: }
2850: } else if (job->pid) {
1.12 christos 2851: KILL(job->pid, signo);
1.1 cgd 2852: }
2853: #else
2854: if (job->pid) {
1.12 christos 2855: if (DEBUG(JOB)) {
2856: (void) fprintf(stdout,
1.16 christos 2857: "JobInterrupt passing signal to child %d.\n",
1.12 christos 2858: job->pid);
2859: (void) fflush(stdout);
2860: }
2861: KILL(job->pid, signo);
2862: }
2863: #endif /* RMT_WANTS_SIGNALS */
2864: }
2865:
2866: #ifdef REMOTE
2867: (void)Lst_Open(stoppedJobs);
2868: while ((ln = Lst_Next(stoppedJobs)) != NILLNODE) {
2869: job = (Job *) Lst_Datum(ln);
2870:
2871: if (job->flags & JOB_RESTART) {
2872: if (DEBUG(JOB)) {
2873: (void) fprintf(stdout, "%s%s",
2874: "JobInterrupt skipping job on stopped queue",
2875: "-- it was waiting to be restarted.\n");
2876: (void) fflush(stdout);
2877: }
2878: continue;
2879: }
2880: if (!Targ_Precious(job->node)) {
2881: char *file = (job->node->path == NULL ?
2882: job->node->name :
2883: job->node->path);
2884: if (eunlink(file) == 0) {
2885: Error("*** %s removed", file);
2886: }
2887: }
2888: /*
2889: * Resume the thing so it will take the signal.
2890: */
2891: if (DEBUG(JOB)) {
2892: (void) fprintf(stdout,
1.16 christos 2893: "JobInterrupt passing CONT to stopped child %d.\n",
1.12 christos 2894: job->pid);
2895: (void) fflush(stdout);
2896: }
2897: KILL(job->pid, SIGCONT);
2898: #ifdef RMT_WANTS_SIGNALS
2899: if (job->flags & JOB_REMOTE) {
2900: /*
2901: * If job is remote, let the Rmt module do the killing.
2902: */
2903: if (!Rmt_Signal(job, SIGINT)) {
2904: /*
2905: * If couldn't kill the thing, finish it out now with an
2906: * error code, since no exit report will come in likely.
2907: */
1.13 christos 2908: int status;
1.12 christos 2909: status.w_status = 0;
2910: status.w_retcode = 1;
2911: JobFinish(job, &status);
2912: }
2913: } else if (job->pid) {
2914: if (DEBUG(JOB)) {
2915: (void) fprintf(stdout,
2916: "JobInterrupt passing interrupt to stopped child %d.\n",
2917: job->pid);
2918: (void) fflush(stdout);
2919: }
1.1 cgd 2920: KILL(job->pid, SIGINT);
2921: }
2922: #endif /* RMT_WANTS_SIGNALS */
2923: }
1.12 christos 2924: #endif
2925: Lst_Close(stoppedJobs);
1.1 cgd 2926:
2927: if (runINTERRUPT && !touchFlag) {
1.12 christos 2928: interrupt = Targ_FindNode(".INTERRUPT", TARG_NOCREATE);
1.1 cgd 2929: if (interrupt != NILGNODE) {
2930: ignoreErrors = FALSE;
2931:
1.12 christos 2932: JobStart(interrupt, JOB_IGNDOTS, (Job *)0);
1.1 cgd 2933: while (nJobs) {
2934: Job_CatchOutput();
2935: #ifndef RMT_WILL_WATCH
1.12 christos 2936: Job_CatchChildren(!usePipes);
1.1 cgd 2937: #endif /* RMT_WILL_WATCH */
2938: }
2939: }
2940: }
1.12 christos 2941: exit(signo);
1.1 cgd 2942: }
2943:
2944: /*
2945: *-----------------------------------------------------------------------
1.22 christos 2946: * Job_Finish --
1.1 cgd 2947: * Do final processing such as the running of the commands
1.16 christos 2948: * attached to the .END target.
1.1 cgd 2949: *
2950: * Results:
2951: * Number of errors reported.
2952: *
2953: * Side Effects:
1.34 ! christos 2954: * None.
1.1 cgd 2955: *-----------------------------------------------------------------------
2956: */
2957: int
1.22 christos 2958: Job_Finish()
1.1 cgd 2959: {
1.12 christos 2960: if (postCommands != NILGNODE && !Lst_IsEmpty(postCommands->commands)) {
1.1 cgd 2961: if (errors) {
1.12 christos 2962: Error("Errors reported so .END ignored");
1.1 cgd 2963: } else {
1.12 christos 2964: JobStart(postCommands, JOB_SPECIAL | JOB_IGNDOTS, NULL);
1.1 cgd 2965:
2966: while (nJobs) {
2967: Job_CatchOutput();
2968: #ifndef RMT_WILL_WATCH
1.12 christos 2969: Job_CatchChildren(!usePipes);
1.1 cgd 2970: #endif /* RMT_WILL_WATCH */
2971: }
2972: }
2973: }
2974: return(errors);
1.22 christos 2975: }
2976:
2977: /*-
2978: *-----------------------------------------------------------------------
2979: * Job_End --
2980: * Cleanup any memory used by the jobs module
2981: *
2982: * Results:
2983: * None.
2984: *
2985: * Side Effects:
2986: * Memory is freed
2987: *-----------------------------------------------------------------------
2988: */
2989: void
2990: Job_End()
2991: {
1.30 mycroft 2992: #ifdef CLEANUP
1.22 christos 2993: if (shellArgv)
2994: free(shellArgv);
1.30 mycroft 2995: #endif
1.1 cgd 2996: }
2997:
2998: /*-
2999: *-----------------------------------------------------------------------
3000: * Job_Wait --
3001: * Waits for all running jobs to finish and returns. Sets 'aborting'
3002: * to ABORT_WAIT to prevent other jobs from starting.
3003: *
3004: * Results:
3005: * None.
3006: *
3007: * Side Effects:
3008: * Currently running jobs finish.
3009: *
3010: *-----------------------------------------------------------------------
3011: */
3012: void
3013: Job_Wait()
3014: {
3015: aborting = ABORT_WAIT;
3016: while (nJobs != 0) {
3017: Job_CatchOutput();
3018: #ifndef RMT_WILL_WATCH
3019: Job_CatchChildren(!usePipes);
3020: #endif /* RMT_WILL_WATCH */
3021: }
3022: aborting = 0;
3023: }
3024:
3025: /*-
3026: *-----------------------------------------------------------------------
3027: * Job_AbortAll --
3028: * Abort all currently running jobs without handling output or anything.
3029: * This function is to be called only in the event of a major
3030: * error. Most definitely NOT to be called from JobInterrupt.
3031: *
3032: * Results:
3033: * None
3034: *
3035: * Side Effects:
3036: * All children are killed, not just the firstborn
3037: *-----------------------------------------------------------------------
3038: */
3039: void
1.12 christos 3040: Job_AbortAll()
1.1 cgd 3041: {
1.12 christos 3042: LstNode ln; /* element in job table */
1.1 cgd 3043: Job *job; /* the job descriptor in that element */
3044: int foo;
1.16 christos 3045:
1.1 cgd 3046: aborting = ABORT_ERROR;
1.16 christos 3047:
1.1 cgd 3048: if (nJobs) {
3049:
1.12 christos 3050: (void) Lst_Open(jobs);
3051: while ((ln = Lst_Next(jobs)) != NILLNODE) {
3052: job = (Job *) Lst_Datum(ln);
1.1 cgd 3053:
3054: /*
3055: * kill the child process with increasingly drastic signals to make
1.16 christos 3056: * darn sure it's dead.
1.1 cgd 3057: */
3058: #ifdef RMT_WANTS_SIGNALS
3059: if (job->flags & JOB_REMOTE) {
3060: Rmt_Signal(job, SIGINT);
3061: Rmt_Signal(job, SIGKILL);
3062: } else {
3063: KILL(job->pid, SIGINT);
3064: KILL(job->pid, SIGKILL);
3065: }
3066: #else
3067: KILL(job->pid, SIGINT);
3068: KILL(job->pid, SIGKILL);
3069: #endif /* RMT_WANTS_SIGNALS */
3070: }
3071: }
1.16 christos 3072:
1.1 cgd 3073: /*
3074: * Catch as many children as want to report in at first, then give up
3075: */
1.13 christos 3076: while (waitpid((pid_t) -1, &foo, WNOHANG) > 0)
1.5 cgd 3077: continue;
1.12 christos 3078: }
3079:
3080: #ifdef REMOTE
3081: /*-
3082: *-----------------------------------------------------------------------
3083: * JobFlagForMigration --
3084: * Handle the eviction of a child. Called from RmtStatusChange.
3085: * Flags the child as remigratable and then suspends it.
3086: *
3087: * Results:
3088: * none.
3089: *
3090: * Side Effects:
3091: * The job descriptor is flagged for remigration.
3092: *
3093: *-----------------------------------------------------------------------
3094: */
3095: void
3096: JobFlagForMigration(hostID)
3097: int hostID; /* ID of host we used, for matching children. */
3098: {
3099: register Job *job; /* job descriptor for dead child */
3100: LstNode jnode; /* list element for finding job */
3101:
3102: if (DEBUG(JOB)) {
3103: (void) fprintf(stdout, "JobFlagForMigration(%d) called.\n", hostID);
3104: (void) fflush(stdout);
3105: }
3106: jnode = Lst_Find(jobs, (ClientData)hostID, JobCmpRmtID);
3107:
3108: if (jnode == NILLNODE) {
3109: jnode = Lst_Find(stoppedJobs, (ClientData)hostID, JobCmpRmtID);
3110: if (jnode == NILLNODE) {
3111: if (DEBUG(JOB)) {
3112: Error("Evicting host(%d) not in table", hostID);
3113: }
3114: return;
3115: }
3116: }
3117: job = (Job *) Lst_Datum(jnode);
3118:
3119: if (DEBUG(JOB)) {
3120: (void) fprintf(stdout,
3121: "JobFlagForMigration(%d) found job '%s'.\n", hostID,
3122: job->node->name);
3123: (void) fflush(stdout);
3124: }
3125:
3126: KILL(job->pid, SIGSTOP);
3127:
3128: job->flags |= JOB_REMIGRATE;
3129: }
3130:
3131: #endif
3132:
3133: /*-
3134: *-----------------------------------------------------------------------
3135: * JobRestartJobs --
3136: * Tries to restart stopped jobs if there are slots available.
3137: * Note that this tries to restart them regardless of pending errors.
3138: * It's not good to leave stopped jobs lying around!
3139: *
3140: * Results:
3141: * None.
3142: *
3143: * Side Effects:
3144: * Resumes(and possibly migrates) jobs.
3145: *
3146: *-----------------------------------------------------------------------
3147: */
3148: static void
3149: JobRestartJobs()
3150: {
3151: while (!jobFull && !Lst_IsEmpty(stoppedJobs)) {
3152: if (DEBUG(JOB)) {
3153: (void) fprintf(stdout,
3154: "Job queue is not full. Restarting a stopped job.\n");
3155: (void) fflush(stdout);
3156: }
3157: JobRestart((Job *)Lst_DeQueue(stoppedJobs));
3158: }
1.1 cgd 3159: }
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