Annotation of src/usr.bin/make/job.c, Revision 1.25
1.25 ! cjs 1: /* $NetBSD: job.c,v 1.24 1998/11/06 23:31:09 christos 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
1.25 ! cjs 42: static char rcsid[] = "$NetBSD: job.c,v 1.24 1998/11/06 23:31:09 christos Exp $";
1.21 lukem 43: #else
1.19 christos 44: #include <sys/cdefs.h>
1.1 cgd 45: #ifndef lint
1.10 christos 46: #if 0
1.16 christos 47: static char sccsid[] = "@(#)job.c 8.2 (Berkeley) 3/19/94";
1.10 christos 48: #else
1.25 ! cjs 49: __RCSID("$NetBSD: job.c,v 1.24 1998/11/06 23:31:09 christos 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: extern int errno;
136:
137: /*
1.16 christos 138: * error handling variables
1.1 cgd 139: */
1.5 cgd 140: static int errors = 0; /* number of errors reported */
141: static int aborting = 0; /* why is the make aborting? */
1.1 cgd 142: #define ABORT_ERROR 1 /* Because of an error */
143: #define ABORT_INTERRUPT 2 /* Because it was interrupted */
144: #define ABORT_WAIT 3 /* Waiting for jobs to finish */
145:
1.16 christos 146: /*
1.12 christos 147: * XXX: Avoid SunOS bug... FILENO() is fp->_file, and file
148: * is a char! So when we go above 127 we turn negative!
149: */
150: #define FILENO(a) ((unsigned) fileno(a))
1.1 cgd 151:
152: /*
153: * post-make command processing. The node postCommands is really just the
154: * .END target but we keep it around to avoid having to search for it
155: * all the time.
156: */
157: static GNode *postCommands; /* node containing commands to execute when
158: * everything else is done */
159: static int numCommands; /* The number of commands actually printed
160: * for a target. Should this number be
161: * 0, no shell will be executed. */
162:
163: /*
164: * Return values from JobStart.
165: */
166: #define JOB_RUNNING 0 /* Job is running */
167: #define JOB_ERROR 1 /* Error in starting the job */
168: #define JOB_FINISHED 2 /* The job is already finished */
169: #define JOB_STOPPED 3 /* The job is stopped */
170:
171: /*
172: * tfile is the name of a file into which all shell commands are put. It is
173: * used over by removing it before the child shell is executed. The XXXXX in
174: * the string are replaced by the pid of the make process in a 5-character
1.16 christos 175: * field with leading zeroes.
1.1 cgd 176: */
177: static char tfile[] = TMPPAT;
178:
179:
180: /*
181: * Descriptions for various shells.
182: */
183: static Shell shells[] = {
184: /*
185: * CSH description. The csh can do echo control by playing
186: * with the setting of the 'echo' shell variable. Sadly,
187: * however, it is unable to do error control nicely.
188: */
189: {
190: "csh",
191: TRUE, "unset verbose", "set verbose", "unset verbose", 10,
192: FALSE, "echo \"%s\"\n", "csh -c \"%s || exit 0\"",
193: "v", "e",
194: },
195: /*
196: * SH description. Echo control is also possible and, under
197: * sun UNIX anyway, one can even control error checking.
198: */
199: {
200: "sh",
201: TRUE, "set -", "set -v", "set -", 5,
1.12 christos 202: TRUE, "set -e", "set +e",
203: #ifdef OLDBOURNESHELL
1.1 cgd 204: FALSE, "echo \"%s\"\n", "sh -c '%s || exit 0'\n",
1.12 christos 205: #endif
1.25 ! cjs 206: "vq", "e",
1.1 cgd 207: },
208: /*
209: * UNKNOWN.
210: */
211: {
1.12 christos 212: (char *) 0,
213: FALSE, (char *) 0, (char *) 0, (char *) 0, 0,
214: FALSE, (char *) 0, (char *) 0,
215: (char *) 0, (char *) 0,
1.1 cgd 216: }
217: };
1.5 cgd 218: static Shell *commandShell = &shells[DEFSHELL];/* this is the shell to
1.1 cgd 219: * which we pass all
220: * commands in the Makefile.
221: * It is set by the
222: * Job_ParseShell function */
1.12 christos 223: static char *shellPath = NULL, /* full pathname of
1.1 cgd 224: * executable image */
1.22 christos 225: *shellName = NULL, /* last component of shell */
226: *shellArgv = NULL; /* Custom shell args */
1.1 cgd 227:
228:
229: static int maxJobs; /* The most children we can run at once */
230: static int maxLocal; /* The most local ones we can have */
1.12 christos 231: STATIC int nJobs; /* The number of children currently running */
232: STATIC int nLocal; /* The number of local children */
233: STATIC Lst jobs; /* The structures that describe them */
234: STATIC Boolean jobFull; /* Flag to tell when the job table is full. It
1.1 cgd 235: * is set TRUE when (1) the total number of
236: * running jobs equals the maximum allowed or
237: * (2) a job can only be run locally, but
238: * nLocal equals maxLocal */
239: #ifndef RMT_WILL_WATCH
240: static fd_set outputs; /* Set of descriptors of pipes connected to
241: * the output channels of children */
242: #endif
243:
1.12 christos 244: STATIC GNode *lastNode; /* The node for which output was most recently
1.1 cgd 245: * produced. */
1.12 christos 246: STATIC char *targFmt; /* Format string to use to head output from a
1.1 cgd 247: * job when it's not the most-recent job heard
248: * from */
1.12 christos 249:
250: #ifdef REMOTE
251: # define TARG_FMT "--- %s at %s ---\n" /* Default format */
252: # define MESSAGE(fp, gn) \
253: (void) fprintf(fp, targFmt, gn->name, gn->rem.hname);
254: #else
255: # define TARG_FMT "--- %s ---\n" /* Default format */
256: # define MESSAGE(fp, gn) \
257: (void) fprintf(fp, targFmt, gn->name);
258: #endif
1.1 cgd 259:
260: /*
261: * When JobStart attempts to run a job remotely but can't, and isn't allowed
262: * to run the job locally, or when Job_CatchChildren detects a job that has
263: * been migrated home, the job is placed on the stoppedJobs queue to be run
1.16 christos 264: * when the next job finishes.
1.1 cgd 265: */
1.12 christos 266: STATIC Lst stoppedJobs; /* Lst of Job structures describing
1.1 cgd 267: * jobs that were stopped due to concurrency
268: * limits or migration home */
269:
270:
1.5 cgd 271: #if defined(USE_PGRP) && defined(SYSV)
1.12 christos 272: # define KILL(pid, sig) killpg(-(pid), (sig))
1.5 cgd 273: #else
1.1 cgd 274: # if defined(USE_PGRP)
1.12 christos 275: # define KILL(pid, sig) killpg((pid), (sig))
1.1 cgd 276: # else
1.12 christos 277: # define KILL(pid, sig) kill((pid), (sig))
1.1 cgd 278: # endif
1.5 cgd 279: #endif
1.1 cgd 280:
1.16 christos 281: /*
1.13 christos 282: * Grmpf... There is no way to set bits of the wait structure
283: * anymore with the stupid W*() macros. I liked the union wait
284: * stuff much more. So, we devise our own macros... This is
285: * really ugly, use dramamine sparingly. You have been warned.
286: */
287: #define W_SETMASKED(st, val, fun) \
288: { \
289: int sh = (int) ~0; \
290: int mask = fun(sh); \
291: \
292: for (sh = 0; ((mask >> sh) & 1) == 0; sh++) \
293: continue; \
294: *(st) = (*(st) & ~mask) | ((val) << sh); \
295: }
296:
297: #define W_SETTERMSIG(st, val) W_SETMASKED(st, val, WTERMSIG)
298: #define W_SETEXITSTATUS(st, val) W_SETMASKED(st, val, WEXITSTATUS)
299:
300:
1.6 jtc 301: static int JobCondPassSig __P((ClientData, ClientData));
1.5 cgd 302: static void JobPassSig __P((int));
1.6 jtc 303: static int JobCmpPid __P((ClientData, ClientData));
304: static int JobPrintCommand __P((ClientData, ClientData));
305: static int JobSaveCommand __P((ClientData, ClientData));
1.12 christos 306: static void JobClose __P((Job *));
307: #ifdef REMOTE
308: static int JobCmpRmtID __P((Job *, int));
309: # ifdef RMT_WILL_WATCH
310: static void JobLocalInput __P((int, Job *));
311: # endif
312: #else
1.13 christos 313: static void JobFinish __P((Job *, int *));
1.5 cgd 314: static void JobExec __P((Job *, char **));
1.12 christos 315: #endif
1.5 cgd 316: static void JobMakeArgv __P((Job *, char **));
317: static void JobRestart __P((Job *));
318: static int JobStart __P((GNode *, int, Job *));
1.16 christos 319: static char *JobOutput __P((Job *, char *, char *, int));
1.5 cgd 320: static void JobDoOutput __P((Job *, Boolean));
321: static Shell *JobMatchShell __P((char *));
1.12 christos 322: static void JobInterrupt __P((int, int));
323: static void JobRestartJobs __P((void));
1.1 cgd 324:
325: /*-
326: *-----------------------------------------------------------------------
327: * JobCondPassSig --
328: * Pass a signal to a job if the job is remote or if USE_PGRP
329: * is defined.
330: *
331: * Results:
332: * === 0
333: *
334: * Side Effects:
335: * None, except the job may bite it.
336: *
337: *-----------------------------------------------------------------------
338: */
339: static int
1.6 jtc 340: JobCondPassSig(jobp, signop)
341: ClientData jobp; /* Job to biff */
342: ClientData signop; /* Signal to send it */
1.1 cgd 343: {
1.6 jtc 344: Job *job = (Job *) jobp;
345: int signo = *(int *) signop;
1.1 cgd 346: #ifdef RMT_WANTS_SIGNALS
347: if (job->flags & JOB_REMOTE) {
1.12 christos 348: (void) Rmt_Signal(job, signo);
1.1 cgd 349: } else {
350: KILL(job->pid, signo);
351: }
352: #else
353: /*
354: * Assume that sending the signal to job->pid will signal any remote
355: * job as well.
356: */
1.12 christos 357: if (DEBUG(JOB)) {
1.16 christos 358: (void) fprintf(stdout,
1.12 christos 359: "JobCondPassSig passing signal %d to child %d.\n",
360: signo, job->pid);
361: (void) fflush(stdout);
362: }
1.1 cgd 363: KILL(job->pid, signo);
364: #endif
1.12 christos 365: return 0;
1.1 cgd 366: }
367:
368: /*-
369: *-----------------------------------------------------------------------
370: * JobPassSig --
371: * Pass a signal on to all remote jobs and to all local jobs if
372: * USE_PGRP is defined, then die ourselves.
373: *
374: * Results:
375: * None.
376: *
377: * Side Effects:
378: * We die by the same signal.
1.16 christos 379: *
1.1 cgd 380: *-----------------------------------------------------------------------
381: */
382: static void
383: JobPassSig(signo)
384: int signo; /* The signal number we've received */
385: {
1.13 christos 386: sigset_t nmask, omask;
1.14 christos 387: struct sigaction act;
1.16 christos 388:
1.12 christos 389: if (DEBUG(JOB)) {
390: (void) fprintf(stdout, "JobPassSig(%d) called.\n", signo);
391: (void) fflush(stdout);
392: }
393: Lst_ForEach(jobs, JobCondPassSig, (ClientData) &signo);
1.1 cgd 394:
395: /*
396: * Deal with proper cleanup based on the signal received. We only run
397: * the .INTERRUPT target if the signal was in fact an interrupt. The other
398: * three termination signals are more of a "get out *now*" command.
399: */
400: if (signo == SIGINT) {
1.12 christos 401: JobInterrupt(TRUE, signo);
1.1 cgd 402: } else if ((signo == SIGHUP) || (signo == SIGTERM) || (signo == SIGQUIT)) {
1.12 christos 403: JobInterrupt(FALSE, signo);
1.1 cgd 404: }
1.16 christos 405:
1.1 cgd 406: /*
407: * Leave gracefully if SIGQUIT, rather than core dumping.
408: */
409: if (signo == SIGQUIT) {
1.5 cgd 410: Finish(0);
1.1 cgd 411: }
1.16 christos 412:
1.1 cgd 413: /*
414: * Send ourselves the signal now we've given the message to everyone else.
415: * Note we block everything else possible while we're getting the signal.
416: * This ensures that all our jobs get continued when we wake up before
417: * we take any other signal.
418: */
1.14 christos 419: sigemptyset(&nmask);
420: sigaddset(&nmask, signo);
421: sigprocmask(SIG_SETMASK, &nmask, &omask);
422: act.sa_handler = SIG_DFL;
423: sigemptyset(&act.sa_mask);
424: act.sa_flags = 0;
425: sigaction(signo, &act, NULL);
1.13 christos 426:
1.12 christos 427: if (DEBUG(JOB)) {
428: (void) fprintf(stdout,
429: "JobPassSig passing signal to self, mask = %x.\n",
430: ~0 & ~(1 << (signo-1)));
431: (void) fflush(stdout);
432: }
433: (void) signal(signo, SIG_DFL);
1.1 cgd 434:
1.12 christos 435: (void) KILL(getpid(), signo);
1.1 cgd 436:
1.6 jtc 437: signo = SIGCONT;
438: Lst_ForEach(jobs, JobCondPassSig, (ClientData) &signo);
1.1 cgd 439:
1.13 christos 440: (void) sigprocmask(SIG_SETMASK, &omask, NULL);
1.14 christos 441: sigprocmask(SIG_SETMASK, &omask, NULL);
442: act.sa_handler = JobPassSig;
443: sigaction(signo, &act, NULL);
1.1 cgd 444: }
445:
446: /*-
447: *-----------------------------------------------------------------------
448: * JobCmpPid --
449: * Compare the pid of the job with the given pid and return 0 if they
450: * are equal. This function is called from Job_CatchChildren via
451: * Lst_Find to find the job descriptor of the finished job.
452: *
453: * Results:
454: * 0 if the pid's match
455: *
456: * Side Effects:
457: * None
458: *-----------------------------------------------------------------------
459: */
460: static int
1.12 christos 461: JobCmpPid(job, pid)
1.6 jtc 462: ClientData job; /* job to examine */
463: ClientData pid; /* process id desired */
1.1 cgd 464: {
1.16 christos 465: return *(int *) pid - ((Job *) job)->pid;
1.12 christos 466: }
467:
468: #ifdef REMOTE
469: /*-
470: *-----------------------------------------------------------------------
471: * JobCmpRmtID --
472: * Compare the rmtID of the job with the given rmtID and return 0 if they
1.16 christos 473: * are equal.
1.12 christos 474: *
475: * Results:
476: * 0 if the rmtID's match
477: *
478: * Side Effects:
479: * None.
480: *-----------------------------------------------------------------------
481: */
482: static int
483: JobCmpRmtID(job, rmtID)
484: ClientData job; /* job to examine */
485: ClientData rmtID; /* remote id desired */
486: {
487: return(*(int *) rmtID - *(int *) job->rmtID);
1.1 cgd 488: }
1.12 christos 489: #endif
1.1 cgd 490:
491: /*-
492: *-----------------------------------------------------------------------
493: * JobPrintCommand --
494: * Put out another command for the given job. If the command starts
495: * with an @ or a - we process it specially. In the former case,
496: * so long as the -s and -n flags weren't given to make, we stick
497: * a shell-specific echoOff command in the script. In the latter,
498: * we ignore errors for the entire job, unless the shell has error
499: * control.
500: * If the command is just "..." we take all future commands for this
501: * job to be commands to be executed once the entire graph has been
502: * made and return non-zero to signal that the end of the commands
503: * was reached. These commands are later attached to the postCommands
504: * node and executed by Job_End when all things are done.
505: * This function is called from JobStart via Lst_ForEach.
506: *
507: * Results:
508: * Always 0, unless the command was "..."
509: *
510: * Side Effects:
511: * If the command begins with a '-' and the shell has no error control,
512: * the JOB_IGNERR flag is set in the job descriptor.
513: * If the command is "..." and we're not ignoring such things,
514: * tailCmds is set to the successor node of the cmd.
515: * numCommands is incremented if the command is actually printed.
516: *-----------------------------------------------------------------------
517: */
518: static int
1.12 christos 519: JobPrintCommand(cmdp, jobp)
1.6 jtc 520: ClientData cmdp; /* command string to print */
521: ClientData jobp; /* job for which to print it */
1.1 cgd 522: {
523: Boolean noSpecials; /* true if we shouldn't worry about
524: * inserting special commands into
525: * the input stream. */
526: Boolean shutUp = FALSE; /* true if we put a no echo command
527: * into the command file */
528: Boolean errOff = FALSE; /* true if we turned error checking
529: * off before printing the command
530: * and need to turn it back on */
531: char *cmdTemplate; /* Template to use when printing the
532: * command */
533: char *cmdStart; /* Start of expanded command */
534: LstNode cmdNode; /* Node for replacing the command */
1.6 jtc 535: char *cmd = (char *) cmdp;
1.16 christos 536: Job *job = (Job *) jobp;
1.1 cgd 537:
1.18 mycroft 538: noSpecials = noExecute && !(job->node->type & OP_MAKE);
1.1 cgd 539:
1.12 christos 540: if (strcmp(cmd, "...") == 0) {
1.16 christos 541: job->node->type |= OP_SAVE_CMDS;
1.1 cgd 542: if ((job->flags & JOB_IGNDOTS) == 0) {
1.12 christos 543: job->tailCmds = Lst_Succ(Lst_Member(job->node->commands,
544: (ClientData)cmd));
1.16 christos 545: return 1;
1.12 christos 546: }
1.16 christos 547: return 0;
1.1 cgd 548: }
549:
1.12 christos 550: #define DBPRINTF(fmt, arg) if (DEBUG(JOB)) { \
551: (void) fprintf(stdout, fmt, arg); \
552: (void) fflush(stdout); \
553: } \
554: (void) fprintf(job->cmdFILE, fmt, arg); \
555: (void) fflush(job->cmdFILE);
1.1 cgd 556:
557: numCommands += 1;
558:
559: /*
560: * For debugging, we replace each command with the result of expanding
561: * the variables in the command.
562: */
1.12 christos 563: cmdNode = Lst_Member(job->node->commands, (ClientData)cmd);
564: cmdStart = cmd = Var_Subst(NULL, cmd, job->node, FALSE);
565: Lst_Replace(cmdNode, (ClientData)cmdStart);
1.1 cgd 566:
567: cmdTemplate = "%s\n";
568:
569: /*
570: * Check for leading @' and -'s to control echoing and error checking.
571: */
572: while (*cmd == '@' || *cmd == '-') {
573: if (*cmd == '@') {
574: shutUp = TRUE;
575: } else {
576: errOff = TRUE;
577: }
578: cmd++;
579: }
580:
1.5 cgd 581: while (isspace((unsigned char) *cmd))
582: cmd++;
1.1 cgd 583:
584: if (shutUp) {
1.12 christos 585: if (!(job->flags & JOB_SILENT) && !noSpecials &&
1.1 cgd 586: commandShell->hasEchoCtl) {
1.12 christos 587: DBPRINTF("%s\n", commandShell->echoOff);
1.1 cgd 588: } else {
589: shutUp = FALSE;
590: }
591: }
592:
593: if (errOff) {
1.12 christos 594: if ( !(job->flags & JOB_IGNERR) && !noSpecials) {
1.1 cgd 595: if (commandShell->hasErrCtl) {
596: /*
597: * we don't want the error-control commands showing
598: * up either, so we turn off echoing while executing
599: * them. We could put another field in the shell
600: * structure to tell JobDoOutput to look for this
601: * string too, but why make it any more complex than
602: * it already is?
603: */
1.12 christos 604: if (!(job->flags & JOB_SILENT) && !shutUp &&
1.1 cgd 605: commandShell->hasEchoCtl) {
1.12 christos 606: DBPRINTF("%s\n", commandShell->echoOff);
607: DBPRINTF("%s\n", commandShell->ignErr);
608: DBPRINTF("%s\n", commandShell->echoOn);
1.1 cgd 609: } else {
1.12 christos 610: DBPRINTF("%s\n", commandShell->ignErr);
1.1 cgd 611: }
612: } else if (commandShell->ignErr &&
1.12 christos 613: (*commandShell->ignErr != '\0'))
1.1 cgd 614: {
615: /*
616: * The shell has no error control, so we need to be
617: * weird to get it to ignore any errors from the command.
618: * If echoing is turned on, we turn it off and use the
619: * errCheck template to echo the command. Leave echoing
620: * off so the user doesn't see the weirdness we go through
621: * to ignore errors. Set cmdTemplate to use the weirdness
622: * instead of the simple "%s\n" template.
623: */
1.12 christos 624: if (!(job->flags & JOB_SILENT) && !shutUp &&
1.1 cgd 625: commandShell->hasEchoCtl) {
1.12 christos 626: DBPRINTF("%s\n", commandShell->echoOff);
627: DBPRINTF(commandShell->errCheck, cmd);
1.1 cgd 628: shutUp = TRUE;
629: }
630: cmdTemplate = commandShell->ignErr;
631: /*
1.16 christos 632: * The error ignoration (hee hee) is already taken care
1.1 cgd 633: * of by the ignErr template, so pretend error checking
634: * is still on.
635: */
636: errOff = FALSE;
637: } else {
638: errOff = FALSE;
639: }
640: } else {
641: errOff = FALSE;
642: }
643: }
1.16 christos 644:
1.12 christos 645: DBPRINTF(cmdTemplate, cmd);
1.23 itohy 646: free(cmdStart);
1.16 christos 647:
1.1 cgd 648: if (errOff) {
649: /*
650: * If echoing is already off, there's no point in issuing the
651: * echoOff command. Otherwise we issue it and pretend it was on
652: * for the whole command...
653: */
654: if (!shutUp && !(job->flags & JOB_SILENT) && commandShell->hasEchoCtl){
1.12 christos 655: DBPRINTF("%s\n", commandShell->echoOff);
1.1 cgd 656: shutUp = TRUE;
657: }
1.12 christos 658: DBPRINTF("%s\n", commandShell->errCheck);
1.1 cgd 659: }
660: if (shutUp) {
1.12 christos 661: DBPRINTF("%s\n", commandShell->echoOn);
1.1 cgd 662: }
1.12 christos 663: return 0;
1.1 cgd 664: }
665:
666: /*-
667: *-----------------------------------------------------------------------
668: * JobSaveCommand --
669: * Save a command to be executed when everything else is done.
670: * Callback function for JobFinish...
671: *
672: * Results:
673: * Always returns 0
674: *
675: * Side Effects:
676: * The command is tacked onto the end of postCommands's commands list.
677: *
678: *-----------------------------------------------------------------------
679: */
680: static int
1.12 christos 681: JobSaveCommand(cmd, gn)
1.6 jtc 682: ClientData cmd;
683: ClientData gn;
1.1 cgd 684: {
1.12 christos 685: cmd = (ClientData) Var_Subst(NULL, (char *) cmd, (GNode *) gn, FALSE);
686: (void) Lst_AtEnd(postCommands->commands, cmd);
687: return(0);
688: }
689:
690:
691: /*-
692: *-----------------------------------------------------------------------
693: * JobClose --
694: * Called to close both input and output pipes when a job is finished.
695: *
696: * Results:
697: * Nada
698: *
699: * Side Effects:
700: * The file descriptors associated with the job are closed.
701: *
702: *-----------------------------------------------------------------------
703: */
704: static void
705: JobClose(job)
706: Job *job;
707: {
708: if (usePipes) {
709: #ifdef RMT_WILL_WATCH
710: Rmt_Ignore(job->inPipe);
711: #else
712: FD_CLR(job->inPipe, &outputs);
713: #endif
714: if (job->outPipe != job->inPipe) {
715: (void) close(job->outPipe);
716: }
717: JobDoOutput(job, TRUE);
718: (void) close(job->inPipe);
719: } else {
720: (void) close(job->outFd);
721: JobDoOutput(job, TRUE);
722: }
1.1 cgd 723: }
724:
725: /*-
726: *-----------------------------------------------------------------------
727: * JobFinish --
728: * Do final processing for the given job including updating
729: * parents and starting new jobs as available/necessary. Note
730: * that we pay no attention to the JOB_IGNERR flag here.
731: * This is because when we're called because of a noexecute flag
732: * or something, jstat.w_status is 0 and when called from
733: * Job_CatchChildren, the status is zeroed if it s/b ignored.
734: *
735: * Results:
736: * None
737: *
738: * Side Effects:
739: * Some nodes may be put on the toBeMade queue.
740: * Final commands for the job are placed on postCommands.
741: *
1.16 christos 742: * If we got an error and are aborting (aborting == ABORT_ERROR) and
1.1 cgd 743: * the job list is now empty, we are done for the day.
1.16 christos 744: * If we recognized an error (errors !=0), we set the aborting flag
1.1 cgd 745: * to ABORT_ERROR so no more jobs will be started.
746: *-----------------------------------------------------------------------
747: */
748: /*ARGSUSED*/
1.5 cgd 749: static void
1.12 christos 750: JobFinish(job, status)
1.13 christos 751: Job *job; /* job to finish */
752: int *status; /* sub-why job went away */
1.1 cgd 753: {
1.13 christos 754: Boolean done;
1.1 cgd 755:
1.12 christos 756: if ((WIFEXITED(*status) &&
757: (((WEXITSTATUS(*status) != 0) && !(job->flags & JOB_IGNERR)))) ||
758: (WIFSIGNALED(*status) && (WTERMSIG(*status) != SIGCONT)))
1.1 cgd 759: {
760: /*
761: * If it exited non-zero and either we're doing things our
762: * way or we're not ignoring errors, the job is finished.
763: * Similarly, if the shell died because of a signal
764: * the job is also finished. In these
765: * cases, finish out the job's output before printing the exit
766: * status...
767: */
1.12 christos 768: #ifdef REMOTE
769: KILL(job->pid, SIGCONT);
770: #endif
771: JobClose(job);
1.1 cgd 772: if (job->cmdFILE != NULL && job->cmdFILE != stdout) {
1.12 christos 773: (void) fclose(job->cmdFILE);
1.1 cgd 774: }
775: done = TRUE;
1.12 christos 776: #ifdef REMOTE
777: if (job->flags & JOB_REMOTE)
778: Rmt_Done(job->rmtID, job->node);
779: #endif
780: } else if (WIFEXITED(*status)) {
1.1 cgd 781: /*
782: * Deal with ignored errors in -B mode. We need to print a message
783: * telling of the ignored error as well as setting status.w_status
784: * to 0 so the next command gets run. To do this, we set done to be
1.12 christos 785: * TRUE if in -B mode and the job exited non-zero.
786: */
787: done = WEXITSTATUS(*status) != 0;
1.16 christos 788: /*
1.12 christos 789: * Old comment said: "Note we don't
1.1 cgd 790: * want to close down any of the streams until we know we're at the
1.12 christos 791: * end."
792: * But we do. Otherwise when are we going to print the rest of the
793: * stuff?
794: */
795: JobClose(job);
796: #ifdef REMOTE
797: if (job->flags & JOB_REMOTE)
798: Rmt_Done(job->rmtID, job->node);
799: #endif /* REMOTE */
1.1 cgd 800: } else {
801: /*
802: * No need to close things down or anything.
803: */
804: done = FALSE;
805: }
1.16 christos 806:
1.1 cgd 807: if (done ||
1.12 christos 808: WIFSTOPPED(*status) ||
809: (WIFSIGNALED(*status) && (WTERMSIG(*status) == SIGCONT)) ||
1.1 cgd 810: DEBUG(JOB))
811: {
812: FILE *out;
1.16 christos 813:
1.12 christos 814: if (compatMake && !usePipes && (job->flags & JOB_IGNERR)) {
1.1 cgd 815: /*
816: * If output is going to a file and this job is ignoring
817: * errors, arrange to have the exit status sent to the
818: * output file as well.
819: */
1.12 christos 820: out = fdopen(job->outFd, "w");
1.1 cgd 821: } else {
822: out = stdout;
823: }
824:
1.12 christos 825: if (WIFEXITED(*status)) {
826: if (DEBUG(JOB)) {
827: (void) fprintf(stdout, "Process %d exited.\n", job->pid);
828: (void) fflush(stdout);
829: }
830: if (WEXITSTATUS(*status) != 0) {
1.1 cgd 831: if (usePipes && job->node != lastNode) {
1.12 christos 832: MESSAGE(out, job->node);
1.1 cgd 833: lastNode = job->node;
834: }
1.12 christos 835: (void) fprintf(out, "*** Error code %d%s\n",
836: WEXITSTATUS(*status),
837: (job->flags & JOB_IGNERR) ? "(ignored)" : "");
1.1 cgd 838:
839: if (job->flags & JOB_IGNERR) {
1.13 christos 840: *status = 0;
1.1 cgd 841: }
842: } else if (DEBUG(JOB)) {
843: if (usePipes && job->node != lastNode) {
1.12 christos 844: MESSAGE(out, job->node);
1.1 cgd 845: lastNode = job->node;
846: }
1.12 christos 847: (void) fprintf(out, "*** Completed successfully\n");
848: }
849: } else if (WIFSTOPPED(*status)) {
850: if (DEBUG(JOB)) {
851: (void) fprintf(stdout, "Process %d stopped.\n", job->pid);
852: (void) fflush(stdout);
1.1 cgd 853: }
854: if (usePipes && job->node != lastNode) {
1.12 christos 855: MESSAGE(out, job->node);
1.1 cgd 856: lastNode = job->node;
857: }
1.12 christos 858: if (!(job->flags & JOB_REMIGRATE)) {
1.16 christos 859: (void) fprintf(out, "*** Stopped -- signal %d\n",
860: WSTOPSIG(*status));
1.1 cgd 861: }
862: job->flags |= JOB_RESUME;
863: (void)Lst_AtEnd(stoppedJobs, (ClientData)job);
1.12 christos 864: #ifdef REMOTE
865: if (job->flags & JOB_REMIGRATE)
866: JobRestart(job);
867: #endif
868: (void) fflush(out);
1.1 cgd 869: return;
1.12 christos 870: } else if (WTERMSIG(*status) == SIGCONT) {
1.1 cgd 871: /*
872: * If the beastie has continued, shift the Job from the stopped
1.16 christos 873: * list to the running one (or re-stop it if concurrency is
1.1 cgd 874: * exceeded) and go and get another child.
875: */
876: if (job->flags & (JOB_RESUME|JOB_REMIGRATE|JOB_RESTART)) {
877: if (usePipes && job->node != lastNode) {
1.12 christos 878: MESSAGE(out, job->node);
1.1 cgd 879: lastNode = job->node;
880: }
1.12 christos 881: (void) fprintf(out, "*** Continued\n");
1.1 cgd 882: }
1.12 christos 883: if (!(job->flags & JOB_CONTINUING)) {
884: if (DEBUG(JOB)) {
885: (void) fprintf(stdout,
886: "Warning: process %d was not continuing.\n",
887: job->pid);
888: (void) fflush(stdout);
889: }
890: #ifdef notdef
891: /*
892: * We don't really want to restart a job from scratch just
893: * because it continued, especially not without killing the
894: * continuing process! That's why this is ifdef'ed out.
895: * FD - 9/17/90
896: */
1.1 cgd 897: JobRestart(job);
1.12 christos 898: #endif
899: }
900: job->flags &= ~JOB_CONTINUING;
901: Lst_AtEnd(jobs, (ClientData)job);
902: nJobs += 1;
903: if (!(job->flags & JOB_REMOTE)) {
904: if (DEBUG(JOB)) {
905: (void) fprintf(stdout,
906: "Process %d is continuing locally.\n",
907: job->pid);
908: (void) fflush(stdout);
909: }
910: nLocal += 1;
1.1 cgd 911: }
1.12 christos 912: if (nJobs == maxJobs) {
913: jobFull = TRUE;
914: if (DEBUG(JOB)) {
915: (void) fprintf(stdout, "Job queue is full.\n");
916: (void) fflush(stdout);
917: }
918: }
919: (void) fflush(out);
920: return;
1.1 cgd 921: } else {
922: if (usePipes && job->node != lastNode) {
1.12 christos 923: MESSAGE(out, job->node);
1.1 cgd 924: lastNode = job->node;
925: }
1.12 christos 926: (void) fprintf(out, "*** Signal %d\n", WTERMSIG(*status));
1.1 cgd 927: }
928:
1.12 christos 929: (void) fflush(out);
1.1 cgd 930: }
931:
932: /*
933: * Now handle the -B-mode stuff. If the beast still isn't finished,
934: * try and restart the job on the next command. If JobStart says it's
935: * ok, it's ok. If there's an error, this puppy is done.
936: */
1.12 christos 937: if (compatMake && (WIFEXITED(*status) &&
938: !Lst_IsAtEnd(job->node->commands))) {
939: switch (JobStart(job->node, job->flags & JOB_IGNDOTS, job)) {
940: case JOB_RUNNING:
941: done = FALSE;
942: break;
943: case JOB_ERROR:
944: done = TRUE;
1.13 christos 945: W_SETEXITSTATUS(status, 1);
1.12 christos 946: break;
947: case JOB_FINISHED:
948: /*
949: * If we got back a JOB_FINISHED code, JobStart has already
950: * called Make_Update and freed the job descriptor. We set
951: * done to false here to avoid fake cycles and double frees.
952: * JobStart needs to do the update so we can proceed up the
953: * graph when given the -n flag..
954: */
955: done = FALSE;
956: break;
1.1 cgd 957: }
958: } else {
959: done = TRUE;
960: }
1.16 christos 961:
1.1 cgd 962:
963: if (done &&
964: (aborting != ABORT_ERROR) &&
965: (aborting != ABORT_INTERRUPT) &&
1.13 christos 966: (*status == 0))
1.1 cgd 967: {
968: /*
969: * As long as we aren't aborting and the job didn't return a non-zero
970: * status that we shouldn't ignore, we call Make_Update to update
971: * the parents. In addition, any saved commands for the node are placed
972: * on the .END target.
973: */
974: if (job->tailCmds != NILLNODE) {
1.12 christos 975: Lst_ForEachFrom(job->node->commands, job->tailCmds,
1.1 cgd 976: JobSaveCommand,
1.12 christos 977: (ClientData)job->node);
1.1 cgd 978: }
979: job->node->made = MADE;
1.12 christos 980: Make_Update(job->node);
1.1 cgd 981: free((Address)job);
1.15 christos 982: } else if (*status != 0) {
1.1 cgd 983: errors += 1;
984: free((Address)job);
985: }
986:
1.12 christos 987: JobRestartJobs();
1.1 cgd 988:
989: /*
990: * Set aborting if any error.
991: */
992: if (errors && !keepgoing && (aborting != ABORT_INTERRUPT)) {
993: /*
994: * If we found any errors in this batch of children and the -k flag
995: * wasn't given, we set the aborting flag so no more jobs get
996: * started.
997: */
998: aborting = ABORT_ERROR;
999: }
1.16 christos 1000:
1.1 cgd 1001: if ((aborting == ABORT_ERROR) && Job_Empty()) {
1002: /*
1003: * If we are aborting and the job table is now empty, we finish.
1004: */
1.12 christos 1005: (void) eunlink(tfile);
1006: Finish(errors);
1.1 cgd 1007: }
1008: }
1009:
1010: /*-
1011: *-----------------------------------------------------------------------
1012: * Job_Touch --
1013: * Touch the given target. Called by JobStart when the -t flag was
1014: * given
1015: *
1016: * Results:
1017: * None
1018: *
1019: * Side Effects:
1020: * The data modification of the file is changed. In addition, if the
1021: * file did not exist, it is created.
1022: *-----------------------------------------------------------------------
1023: */
1024: void
1.12 christos 1025: Job_Touch(gn, silent)
1.1 cgd 1026: GNode *gn; /* the node of the file to touch */
1027: Boolean silent; /* TRUE if should not print messages */
1028: {
1029: int streamID; /* ID of stream opened to do the touch */
1.14 christos 1030: struct utimbuf times; /* Times for utime() call */
1.1 cgd 1031:
1.17 mycroft 1032: if (gn->type & (OP_JOIN|OP_USE|OP_EXEC|OP_OPTIONAL|OP_PHONY)) {
1.1 cgd 1033: /*
1034: * .JOIN, .USE, .ZEROTIME and .OPTIONAL targets are "virtual" targets
1035: * and, as such, shouldn't really be created.
1036: */
1037: return;
1038: }
1.16 christos 1039:
1.18 mycroft 1040: if (!silent || (noExecute && !(gn->type & OP_MAKE))) {
1.12 christos 1041: (void) fprintf(stdout, "touch %s\n", gn->name);
1042: (void) fflush(stdout);
1.1 cgd 1043: }
1044:
1.18 mycroft 1045: if (noExecute && !(gn->type & OP_MAKE)) {
1.1 cgd 1046: return;
1047: }
1048:
1049: if (gn->type & OP_ARCHV) {
1.12 christos 1050: Arch_Touch(gn);
1.1 cgd 1051: } else if (gn->type & OP_LIB) {
1.12 christos 1052: Arch_TouchLib(gn);
1.1 cgd 1053: } else {
1054: char *file = gn->path ? gn->path : gn->name;
1055:
1.14 christos 1056: times.actime = times.modtime = now;
1057: if (utime(file, ×) < 0){
1.12 christos 1058: streamID = open(file, O_RDWR | O_CREAT, 0666);
1.1 cgd 1059:
1060: if (streamID >= 0) {
1061: char c;
1062:
1063: /*
1064: * Read and write a byte to the file to change the
1065: * modification time, then close the file.
1066: */
1067: if (read(streamID, &c, 1) == 1) {
1.20 kleink 1068: (void) lseek(streamID, (off_t)0, SEEK_SET);
1.12 christos 1069: (void) write(streamID, &c, 1);
1.1 cgd 1070: }
1.16 christos 1071:
1.12 christos 1072: (void) close(streamID);
1073: } else {
1074: (void) fprintf(stdout, "*** couldn't touch %s: %s",
1075: file, strerror(errno));
1076: (void) fflush(stdout);
1077: }
1.1 cgd 1078: }
1079: }
1080: }
1081:
1082: /*-
1083: *-----------------------------------------------------------------------
1084: * Job_CheckCommands --
1.16 christos 1085: * Make sure the given node has all the commands it needs.
1.1 cgd 1086: *
1087: * Results:
1088: * TRUE if the commands list is/was ok.
1089: *
1090: * Side Effects:
1091: * The node will have commands from the .DEFAULT rule added to it
1092: * if it needs them.
1093: *-----------------------------------------------------------------------
1094: */
1095: Boolean
1.12 christos 1096: Job_CheckCommands(gn, abortProc)
1.1 cgd 1097: GNode *gn; /* The target whose commands need
1098: * verifying */
1.16 christos 1099: void (*abortProc) __P((char *, ...));
1.5 cgd 1100: /* Function to abort with message */
1.1 cgd 1101: {
1.12 christos 1102: if (OP_NOP(gn->type) && Lst_IsEmpty(gn->commands) &&
1.1 cgd 1103: (gn->type & OP_LIB) == 0) {
1104: /*
1105: * No commands. Look for .DEFAULT rule from which we might infer
1.16 christos 1106: * commands
1.1 cgd 1107: */
1108: if ((DEFAULT != NILGNODE) && !Lst_IsEmpty(DEFAULT->commands)) {
1.6 jtc 1109: char *p1;
1.1 cgd 1110: /*
1111: * Make only looks for a .DEFAULT if the node was never the
1112: * target of an operator, so that's what we do too. If
1113: * a .DEFAULT was given, we substitute its commands for gn's
1114: * commands and set the IMPSRC variable to be the target's name
1115: * The DEFAULT node acts like a transformation rule, in that
1116: * gn also inherits any attributes or sources attached to
1117: * .DEFAULT itself.
1118: */
1119: Make_HandleUse(DEFAULT, gn);
1.12 christos 1120: Var_Set(IMPSRC, Var_Value(TARGET, gn, &p1), gn);
1.6 jtc 1121: if (p1)
1122: free(p1);
1.12 christos 1123: } else if (Dir_MTime(gn) == 0) {
1.1 cgd 1124: /*
1125: * The node wasn't the target of an operator we have no .DEFAULT
1126: * rule to go on and the target doesn't already exist. There's
1127: * nothing more we can do for this branch. If the -k flag wasn't
1128: * given, we stop in our tracks, otherwise we just don't update
1.16 christos 1129: * this node's parents so they never get examined.
1.1 cgd 1130: */
1.12 christos 1131: static const char msg[] = "make: don't know how to make";
1132:
1.1 cgd 1133: if (gn->type & OP_OPTIONAL) {
1.12 christos 1134: (void) fprintf(stdout, "%s %s(ignored)\n", msg, gn->name);
1135: (void) fflush(stdout);
1.1 cgd 1136: } else if (keepgoing) {
1.12 christos 1137: (void) fprintf(stdout, "%s %s(continuing)\n", msg, gn->name);
1138: (void) fflush(stdout);
1139: return FALSE;
1.1 cgd 1140: } else {
1.12 christos 1141: (*abortProc)("%s %s. Stop", msg, gn->name);
1142: return FALSE;
1.1 cgd 1143: }
1144: }
1145: }
1.12 christos 1146: return TRUE;
1.1 cgd 1147: }
1148: #ifdef RMT_WILL_WATCH
1149: /*-
1150: *-----------------------------------------------------------------------
1151: * JobLocalInput --
1152: * Handle a pipe becoming readable. Callback function for Rmt_Watch
1153: *
1154: * Results:
1155: * None
1156: *
1157: * Side Effects:
1158: * JobDoOutput is called.
1.16 christos 1159: *
1.1 cgd 1160: *-----------------------------------------------------------------------
1161: */
1162: /*ARGSUSED*/
1163: static void
1164: JobLocalInput(stream, job)
1.16 christos 1165: int stream; /* Stream that's ready (ignored) */
1.1 cgd 1166: Job *job; /* Job to which the stream belongs */
1167: {
1168: JobDoOutput(job, FALSE);
1169: }
1170: #endif /* RMT_WILL_WATCH */
1171:
1172: /*-
1173: *-----------------------------------------------------------------------
1174: * JobExec --
1175: * Execute the shell for the given job. Called from JobStart and
1176: * JobRestart.
1177: *
1178: * Results:
1179: * None.
1180: *
1181: * Side Effects:
1182: * A shell is executed, outputs is altered and the Job structure added
1183: * to the job table.
1184: *
1185: *-----------------------------------------------------------------------
1186: */
1187: static void
1188: JobExec(job, argv)
1189: Job *job; /* Job to execute */
1190: char **argv;
1191: {
1192: int cpid; /* ID of new child */
1.16 christos 1193:
1.1 cgd 1194: if (DEBUG(JOB)) {
1195: int i;
1.16 christos 1196:
1.12 christos 1197: (void) fprintf(stdout, "Running %s %sly\n", job->node->name,
1198: job->flags&JOB_REMOTE?"remote":"local");
1199: (void) fprintf(stdout, "\tCommand: ");
1200: for (i = 0; argv[i] != NULL; i++) {
1201: (void) fprintf(stdout, "%s ", argv[i]);
1.1 cgd 1202: }
1.12 christos 1203: (void) fprintf(stdout, "\n");
1204: (void) fflush(stdout);
1.1 cgd 1205: }
1.16 christos 1206:
1.1 cgd 1207: /*
1208: * Some jobs produce no output and it's disconcerting to have
1.16 christos 1209: * no feedback of their running (since they produce no output, the
1.1 cgd 1210: * banner with their name in it never appears). This is an attempt to
1211: * provide that feedback, even if nothing follows it.
1212: */
1213: if ((lastNode != job->node) && (job->flags & JOB_FIRST) &&
1.12 christos 1214: !(job->flags & JOB_SILENT)) {
1215: MESSAGE(stdout, job->node);
1.1 cgd 1216: lastNode = job->node;
1217: }
1.16 christos 1218:
1.1 cgd 1219: #ifdef RMT_NO_EXEC
1220: if (job->flags & JOB_REMOTE) {
1221: goto jobExecFinish;
1222: }
1223: #endif /* RMT_NO_EXEC */
1224:
1.12 christos 1225: if ((cpid = vfork()) == -1) {
1226: Punt("Cannot fork");
1.1 cgd 1227: } else if (cpid == 0) {
1228:
1229: /*
1230: * Must duplicate the input stream down to the child's input and
1.16 christos 1231: * reset it to the beginning (again). Since the stream was marked
1.1 cgd 1232: * close-on-exec, we must clear that bit in the new input.
1233: */
1.12 christos 1234: if (dup2(FILENO(job->cmdFILE), 0) == -1)
1235: Punt("Cannot dup2: %s", strerror(errno));
1236: (void) fcntl(0, F_SETFD, 0);
1.20 kleink 1237: (void) lseek(0, (off_t)0, SEEK_SET);
1.16 christos 1238:
1.1 cgd 1239: if (usePipes) {
1240: /*
1241: * Set up the child's output to be routed through the pipe
1242: * we've created for it.
1243: */
1.12 christos 1244: if (dup2(job->outPipe, 1) == -1)
1245: Punt("Cannot dup2: %s", strerror(errno));
1.1 cgd 1246: } else {
1247: /*
1248: * We're capturing output in a file, so we duplicate the
1249: * descriptor to the temporary file into the standard
1250: * output.
1251: */
1.12 christos 1252: if (dup2(job->outFd, 1) == -1)
1253: Punt("Cannot dup2: %s", strerror(errno));
1.1 cgd 1254: }
1255: /*
1256: * The output channels are marked close on exec. This bit was
1.16 christos 1257: * duplicated by the dup2 (on some systems), so we have to clear
1.1 cgd 1258: * it before routing the shell's error output to the same place as
1259: * its standard output.
1260: */
1.12 christos 1261: (void) fcntl(1, F_SETFD, 0);
1262: if (dup2(1, 2) == -1)
1263: Punt("Cannot dup2: %s", strerror(errno));
1.1 cgd 1264:
1265: #ifdef USE_PGRP
1266: /*
1267: * We want to switch the child into a different process family so
1268: * we can kill it and all its descendants in one fell swoop,
1269: * by killing its process family, but not commit suicide.
1270: */
1.12 christos 1271: # if defined(SYSV)
1272: (void) setsid();
1273: # else
1274: (void) setpgid(0, getpid());
1275: # endif
1276: #endif /* USE_PGRP */
1.1 cgd 1277:
1.12 christos 1278: #ifdef REMOTE
1279: if (job->flags & JOB_REMOTE) {
1280: Rmt_Exec(shellPath, argv, FALSE);
1.16 christos 1281: } else
1.12 christos 1282: #endif /* REMOTE */
1283: (void) execv(shellPath, argv);
1284:
1285: (void) write(2, "Could not execute shell\n",
1286: sizeof("Could not execute shell"));
1287: _exit(1);
1.1 cgd 1288: } else {
1.12 christos 1289: #ifdef REMOTE
1290: long omask = sigblock(sigmask(SIGCHLD));
1291: #endif
1.1 cgd 1292: job->pid = cpid;
1293:
1294: if (usePipes && (job->flags & JOB_FIRST) ) {
1295: /*
1296: * The first time a job is run for a node, we set the current
1297: * position in the buffer to the beginning and mark another
1298: * stream to watch in the outputs mask
1299: */
1300: job->curPos = 0;
1.16 christos 1301:
1.1 cgd 1302: #ifdef RMT_WILL_WATCH
1303: Rmt_Watch(job->inPipe, JobLocalInput, job);
1304: #else
1305: FD_SET(job->inPipe, &outputs);
1306: #endif /* RMT_WILL_WATCH */
1307: }
1308:
1309: if (job->flags & JOB_REMOTE) {
1.12 christos 1310: #ifndef REMOTE
1.5 cgd 1311: job->rmtID = 0;
1.12 christos 1312: #else
1313: job->rmtID = Rmt_LastID(job->pid);
1314: #endif /* REMOTE */
1.1 cgd 1315: } else {
1316: nLocal += 1;
1317: /*
1.12 christos 1318: * XXX: Used to not happen if REMOTE. Why?
1.1 cgd 1319: */
1.12 christos 1320: if (job->cmdFILE != NULL && job->cmdFILE != stdout) {
1321: (void) fclose(job->cmdFILE);
1.1 cgd 1322: job->cmdFILE = NULL;
1323: }
1324: }
1.12 christos 1325: #ifdef REMOTE
1326: (void) sigsetmask(omask);
1327: #endif
1.1 cgd 1328: }
1329:
1.5 cgd 1330: #ifdef RMT_NO_EXEC
1.16 christos 1331: jobExecFinish:
1.5 cgd 1332: #endif
1.1 cgd 1333: /*
1334: * Now the job is actually running, add it to the table.
1335: */
1336: nJobs += 1;
1.12 christos 1337: (void) Lst_AtEnd(jobs, (ClientData)job);
1.1 cgd 1338: if (nJobs == maxJobs) {
1339: jobFull = TRUE;
1340: }
1341: }
1342:
1343: /*-
1344: *-----------------------------------------------------------------------
1345: * JobMakeArgv --
1346: * Create the argv needed to execute the shell for a given job.
1.16 christos 1347: *
1.1 cgd 1348: *
1349: * Results:
1350: *
1351: * Side Effects:
1352: *
1353: *-----------------------------------------------------------------------
1354: */
1355: static void
1356: JobMakeArgv(job, argv)
1357: Job *job;
1358: char **argv;
1359: {
1360: int argc;
1361: static char args[10]; /* For merged arguments */
1.16 christos 1362:
1.1 cgd 1363: argv[0] = shellName;
1364: argc = 1;
1365:
1366: if ((commandShell->exit && (*commandShell->exit != '-')) ||
1367: (commandShell->echo && (*commandShell->echo != '-')))
1368: {
1369: /*
1370: * At least one of the flags doesn't have a minus before it, so
1371: * merge them together. Have to do this because the *(&(@*#*&#$#
1372: * Bourne shell thinks its second argument is a file to source.
1373: * Grrrr. Note the ten-character limitation on the combined arguments.
1374: */
1375: (void)sprintf(args, "-%s%s",
1376: ((job->flags & JOB_IGNERR) ? "" :
1377: (commandShell->exit ? commandShell->exit : "")),
1378: ((job->flags & JOB_SILENT) ? "" :
1379: (commandShell->echo ? commandShell->echo : "")));
1380:
1381: if (args[1]) {
1382: argv[argc] = args;
1383: argc++;
1384: }
1385: } else {
1386: if (!(job->flags & JOB_IGNERR) && commandShell->exit) {
1387: argv[argc] = commandShell->exit;
1388: argc++;
1389: }
1390: if (!(job->flags & JOB_SILENT) && commandShell->echo) {
1391: argv[argc] = commandShell->echo;
1392: argc++;
1393: }
1394: }
1.12 christos 1395: argv[argc] = NULL;
1.1 cgd 1396: }
1397:
1398: /*-
1399: *-----------------------------------------------------------------------
1400: * JobRestart --
1.16 christos 1401: * Restart a job that stopped for some reason.
1.1 cgd 1402: *
1403: * Results:
1404: * None.
1405: *
1406: * Side Effects:
1407: * jobFull will be set if the job couldn't be run.
1408: *
1409: *-----------------------------------------------------------------------
1410: */
1411: static void
1412: JobRestart(job)
1413: Job *job; /* Job to restart */
1414: {
1.12 christos 1415: #ifdef REMOTE
1416: int host;
1417: #endif
1.16 christos 1418:
1.1 cgd 1419: if (job->flags & JOB_REMIGRATE) {
1.12 christos 1420: if (
1421: #ifdef REMOTE
1422: verboseRemigrates ||
1423: #endif
1424: DEBUG(JOB)) {
1425: (void) fprintf(stdout, "*** remigrating %x(%s)\n",
1426: job->pid, job->node->name);
1427: (void) fflush(stdout);
1.1 cgd 1428: }
1.12 christos 1429:
1430: #ifdef REMOTE
1431: if (!Rmt_ReExport(job->pid, job->node, &host)) {
1432: if (verboseRemigrates || DEBUG(JOB)) {
1433: (void) fprintf(stdout, "*** couldn't migrate...\n");
1434: (void) fflush(stdout);
1435: }
1436: #endif
1437: if (nLocal != maxLocal) {
1.1 cgd 1438: /*
1439: * Job cannot be remigrated, but there's room on the local
1440: * machine, so resume the job and note that another
1441: * local job has started.
1442: */
1.12 christos 1443: if (
1444: #ifdef REMOTE
1445: verboseRemigrates ||
1446: #endif
1447: DEBUG(JOB)) {
1448: (void) fprintf(stdout, "*** resuming on local machine\n");
1449: (void) fflush(stdout);
1450: }
1.1 cgd 1451: KILL(job->pid, SIGCONT);
1452: nLocal +=1;
1.12 christos 1453: #ifdef REMOTE
1454: job->flags &= ~(JOB_REMIGRATE|JOB_RESUME|JOB_REMOTE);
1455: job->flags |= JOB_CONTINUING;
1456: #else
1.1 cgd 1457: job->flags &= ~(JOB_REMIGRATE|JOB_RESUME);
1.12 christos 1458: #endif
1.1 cgd 1459: } else {
1460: /*
1461: * Job cannot be restarted. Mark the table as full and
1462: * place the job back on the list of stopped jobs.
1463: */
1.12 christos 1464: if (
1465: #ifdef REMOTE
1466: verboseRemigrates ||
1467: #endif
1468: DEBUG(JOB)) {
1469: (void) fprintf(stdout, "*** holding\n");
1470: (void) fflush(stdout);
1471: }
1.1 cgd 1472: (void)Lst_AtFront(stoppedJobs, (ClientData)job);
1473: jobFull = TRUE;
1474: if (DEBUG(JOB)) {
1.12 christos 1475: (void) fprintf(stdout, "Job queue is full.\n");
1476: (void) fflush(stdout);
1.1 cgd 1477: }
1478: return;
1.12 christos 1479: }
1480: #ifdef REMOTE
1481: } else {
1482: /*
1483: * Clear out the remigrate and resume flags. Set the continuing
1484: * flag so we know later on that the process isn't exiting just
1485: * because of a signal.
1486: */
1487: job->flags &= ~(JOB_REMIGRATE|JOB_RESUME);
1488: job->flags |= JOB_CONTINUING;
1489: job->rmtID = host;
1.1 cgd 1490: }
1.12 christos 1491: #endif
1.16 christos 1492:
1.1 cgd 1493: (void)Lst_AtEnd(jobs, (ClientData)job);
1494: nJobs += 1;
1495: if (nJobs == maxJobs) {
1496: jobFull = TRUE;
1497: if (DEBUG(JOB)) {
1.12 christos 1498: (void) fprintf(stdout, "Job queue is full.\n");
1499: (void) fflush(stdout);
1.1 cgd 1500: }
1501: }
1502: } else if (job->flags & JOB_RESTART) {
1503: /*
1504: * Set up the control arguments to the shell. This is based on the
1505: * flags set earlier for this job. If the JOB_IGNERR flag is clear,
1506: * the 'exit' flag of the commandShell is used to cause it to exit
1507: * upon receiving an error. If the JOB_SILENT flag is clear, the
1508: * 'echo' flag of the commandShell is used to get it to start echoing
1.16 christos 1509: * as soon as it starts processing commands.
1.1 cgd 1510: */
1511: char *argv[4];
1.16 christos 1512:
1.1 cgd 1513: JobMakeArgv(job, argv);
1.12 christos 1514:
1.1 cgd 1515: if (DEBUG(JOB)) {
1.12 christos 1516: (void) fprintf(stdout, "Restarting %s...", job->node->name);
1517: (void) fflush(stdout);
1.1 cgd 1518: }
1.12 christos 1519: #ifdef REMOTE
1520: if ((job->node->type&OP_NOEXPORT) ||
1.16 christos 1521: (nLocal < maxLocal && runLocalFirst)
1.12 christos 1522: # ifdef RMT_NO_EXEC
1523: || !Rmt_Export(shellPath, argv, job)
1524: # else
1525: || !Rmt_Begin(shellPath, argv, job->node)
1526: # endif
1527: #endif
1528: {
1529: if (((nLocal >= maxLocal) && !(job->flags & JOB_SPECIAL))) {
1.1 cgd 1530: /*
1531: * Can't be exported and not allowed to run locally -- put it
1532: * back on the hold queue and mark the table full
1533: */
1534: if (DEBUG(JOB)) {
1.12 christos 1535: (void) fprintf(stdout, "holding\n");
1536: (void) fflush(stdout);
1.1 cgd 1537: }
1538: (void)Lst_AtFront(stoppedJobs, (ClientData)job);
1539: jobFull = TRUE;
1540: if (DEBUG(JOB)) {
1.12 christos 1541: (void) fprintf(stdout, "Job queue is full.\n");
1542: (void) fflush(stdout);
1.1 cgd 1543: }
1544: return;
1.12 christos 1545: } else {
1.1 cgd 1546: /*
1547: * Job may be run locally.
1548: */
1549: if (DEBUG(JOB)) {
1.12 christos 1550: (void) fprintf(stdout, "running locally\n");
1551: (void) fflush(stdout);
1.1 cgd 1552: }
1553: job->flags &= ~JOB_REMOTE;
1.12 christos 1554: }
1.1 cgd 1555: }
1.12 christos 1556: #ifdef REMOTE
1557: else {
1558: /*
1559: * Can be exported. Hooray!
1560: */
1561: if (DEBUG(JOB)) {
1562: (void) fprintf(stdout, "exporting\n");
1563: (void) fflush(stdout);
1564: }
1565: job->flags |= JOB_REMOTE;
1566: }
1567: #endif
1.1 cgd 1568: JobExec(job, argv);
1569: } else {
1570: /*
1571: * The job has stopped and needs to be restarted. Why it stopped,
1572: * we don't know...
1573: */
1574: if (DEBUG(JOB)) {
1.12 christos 1575: (void) fprintf(stdout, "Resuming %s...", job->node->name);
1576: (void) fflush(stdout);
1.1 cgd 1577: }
1578: if (((job->flags & JOB_REMOTE) ||
1.12 christos 1579: (nLocal < maxLocal) ||
1580: #ifdef REMOTE
1581: (((job->flags & JOB_SPECIAL) &&
1582: (job->node->type & OP_NOEXPORT)) &&
1583: (maxLocal == 0))) &&
1584: #else
1585: ((job->flags & JOB_SPECIAL) &&
1586: (maxLocal == 0))) &&
1587: #endif
1588: (nJobs != maxJobs))
1.1 cgd 1589: {
1590: /*
1591: * If the job is remote, it's ok to resume it as long as the
1592: * maximum concurrency won't be exceeded. If it's local and
1.16 christos 1593: * we haven't reached the local concurrency limit already (or the
1.1 cgd 1594: * job must be run locally and maxLocal is 0), it's also ok to
1595: * resume it.
1596: */
1597: Boolean error;
1598: extern int errno;
1.13 christos 1599: int status;
1.16 christos 1600:
1.1 cgd 1601: #ifdef RMT_WANTS_SIGNALS
1602: if (job->flags & JOB_REMOTE) {
1603: error = !Rmt_Signal(job, SIGCONT);
1604: } else
1605: #endif /* RMT_WANTS_SIGNALS */
1606: error = (KILL(job->pid, SIGCONT) != 0);
1607:
1608: if (!error) {
1609: /*
1610: * Make sure the user knows we've continued the beast and
1611: * actually put the thing in the job table.
1612: */
1613: job->flags |= JOB_CONTINUING;
1.13 christos 1614: W_SETTERMSIG(&status, SIGCONT);
1.12 christos 1615: JobFinish(job, &status);
1.16 christos 1616:
1.1 cgd 1617: job->flags &= ~(JOB_RESUME|JOB_CONTINUING);
1618: if (DEBUG(JOB)) {
1.12 christos 1619: (void) fprintf(stdout, "done\n");
1620: (void) fflush(stdout);
1.1 cgd 1621: }
1622: } else {
1623: Error("couldn't resume %s: %s",
1624: job->node->name, strerror(errno));
1.13 christos 1625: status = 0;
1626: W_SETEXITSTATUS(&status, 1);
1.12 christos 1627: JobFinish(job, &status);
1.1 cgd 1628: }
1629: } else {
1630: /*
1631: * Job cannot be restarted. Mark the table as full and
1632: * place the job back on the list of stopped jobs.
1633: */
1634: if (DEBUG(JOB)) {
1.12 christos 1635: (void) fprintf(stdout, "table full\n");
1636: (void) fflush(stdout);
1.1 cgd 1637: }
1.12 christos 1638: (void) Lst_AtFront(stoppedJobs, (ClientData)job);
1.1 cgd 1639: jobFull = TRUE;
1640: if (DEBUG(JOB)) {
1.12 christos 1641: (void) fprintf(stdout, "Job queue is full.\n");
1642: (void) fflush(stdout);
1.1 cgd 1643: }
1644: }
1645: }
1646: }
1647:
1648: /*-
1649: *-----------------------------------------------------------------------
1650: * JobStart --
1651: * Start a target-creation process going for the target described
1.16 christos 1652: * by the graph node gn.
1.1 cgd 1653: *
1654: * Results:
1655: * JOB_ERROR if there was an error in the commands, JOB_FINISHED
1656: * if there isn't actually anything left to do for the job and
1657: * JOB_RUNNING if the job has been started.
1658: *
1659: * Side Effects:
1660: * A new Job node is created and added to the list of running
1661: * jobs. PMake is forked and a child shell created.
1662: *-----------------------------------------------------------------------
1663: */
1664: static int
1.12 christos 1665: JobStart(gn, flags, previous)
1.1 cgd 1666: GNode *gn; /* target to create */
1.6 jtc 1667: int flags; /* flags for the job to override normal ones.
1.1 cgd 1668: * e.g. JOB_SPECIAL or JOB_IGNDOTS */
1669: Job *previous; /* The previous Job structure for this node,
1670: * if any. */
1671: {
1672: register Job *job; /* new job descriptor */
1673: char *argv[4]; /* Argument vector to shell */
1674: static int jobno = 0; /* job number of catching output in a file */
1675: Boolean cmdsOK; /* true if the nodes commands were all right */
1676: Boolean local; /* Set true if the job was run locally */
1677: Boolean noExec; /* Set true if we decide not to run the job */
1678:
1.12 christos 1679: if (previous != NULL) {
1680: previous->flags &= ~(JOB_FIRST|JOB_IGNERR|JOB_SILENT|JOB_REMOTE);
1.1 cgd 1681: job = previous;
1682: } else {
1.12 christos 1683: job = (Job *) emalloc(sizeof(Job));
1684: if (job == NULL) {
1.1 cgd 1685: Punt("JobStart out of memory");
1686: }
1687: flags |= JOB_FIRST;
1688: }
1689:
1690: job->node = gn;
1691: job->tailCmds = NILLNODE;
1692:
1693: /*
1694: * Set the initial value of the flags for this job based on the global
1695: * ones and the node's attributes... Any flags supplied by the caller
1696: * are also added to the field.
1697: */
1698: job->flags = 0;
1.12 christos 1699: if (Targ_Ignore(gn)) {
1.1 cgd 1700: job->flags |= JOB_IGNERR;
1701: }
1.12 christos 1702: if (Targ_Silent(gn)) {
1.1 cgd 1703: job->flags |= JOB_SILENT;
1704: }
1705: job->flags |= flags;
1706:
1707: /*
1708: * Check the commands now so any attributes from .DEFAULT have a chance
1709: * to migrate to the node
1710: */
1.12 christos 1711: if (!compatMake && job->flags & JOB_FIRST) {
1.1 cgd 1712: cmdsOK = Job_CheckCommands(gn, Error);
1713: } else {
1714: cmdsOK = TRUE;
1715: }
1.16 christos 1716:
1.1 cgd 1717: /*
1.16 christos 1718: * If the -n flag wasn't given, we open up OUR (not the child's)
1.1 cgd 1719: * temporary file to stuff commands in it. The thing is rd/wr so we don't
1720: * need to reopen it to feed it to the shell. If the -n flag *was* given,
1721: * we just set the file to be stdout. Cute, huh?
1722: */
1723: if ((gn->type & OP_MAKE) || (!noExecute && !touchFlag)) {
1724: /*
1725: * We're serious here, but if the commands were bogus, we're
1726: * also dead...
1727: */
1728: if (!cmdsOK) {
1729: DieHorribly();
1730: }
1.16 christos 1731:
1.12 christos 1732: job->cmdFILE = fopen(tfile, "w+");
1733: if (job->cmdFILE == NULL) {
1734: Punt("Could not open %s", tfile);
1.1 cgd 1735: }
1.12 christos 1736: (void) fcntl(FILENO(job->cmdFILE), F_SETFD, 1);
1.1 cgd 1737: /*
1738: * Send the commands to the command file, flush all its buffers then
1739: * rewind and remove the thing.
1740: */
1741: noExec = FALSE;
1742:
1743: /*
1744: * used to be backwards; replace when start doing multiple commands
1745: * per shell.
1746: */
1.5 cgd 1747: if (compatMake) {
1.1 cgd 1748: /*
1749: * Be compatible: If this is the first time for this node,
1750: * verify its commands are ok and open the commands list for
1751: * sequential access by later invocations of JobStart.
1752: * Once that is done, we take the next command off the list
1753: * and print it to the command file. If the command was an
1754: * ellipsis, note that there's nothing more to execute.
1755: */
1756: if ((job->flags&JOB_FIRST) && (Lst_Open(gn->commands) != SUCCESS)){
1757: cmdsOK = FALSE;
1758: } else {
1.12 christos 1759: LstNode ln = Lst_Next(gn->commands);
1.16 christos 1760:
1.1 cgd 1761: if ((ln == NILLNODE) ||
1.12 christos 1762: JobPrintCommand((ClientData) Lst_Datum(ln),
1763: (ClientData) job))
1.1 cgd 1764: {
1765: noExec = TRUE;
1.12 christos 1766: Lst_Close(gn->commands);
1.1 cgd 1767: }
1768: if (noExec && !(job->flags & JOB_FIRST)) {
1769: /*
1770: * If we're not going to execute anything, the job
1771: * is done and we need to close down the various
1772: * file descriptors we've opened for output, then
1773: * call JobDoOutput to catch the final characters or
1774: * send the file to the screen... Note that the i/o streams
1775: * are only open if this isn't the first job.
1776: * Note also that this could not be done in
1777: * Job_CatchChildren b/c it wasn't clear if there were
1778: * more commands to execute or not...
1779: */
1.12 christos 1780: JobClose(job);
1.1 cgd 1781: }
1782: }
1783: } else {
1784: /*
1785: * We can do all the commands at once. hooray for sanity
1786: */
1787: numCommands = 0;
1.12 christos 1788: Lst_ForEach(gn->commands, JobPrintCommand, (ClientData)job);
1.16 christos 1789:
1.1 cgd 1790: /*
1791: * If we didn't print out any commands to the shell script,
1792: * there's not much point in executing the shell, is there?
1793: */
1794: if (numCommands == 0) {
1795: noExec = TRUE;
1796: }
1797: }
1798: } else if (noExecute) {
1799: /*
1800: * Not executing anything -- just print all the commands to stdout
1801: * in one fell swoop. This will still set up job->tailCmds correctly.
1802: */
1803: if (lastNode != gn) {
1.12 christos 1804: MESSAGE(stdout, gn);
1.1 cgd 1805: lastNode = gn;
1806: }
1807: job->cmdFILE = stdout;
1808: /*
1809: * Only print the commands if they're ok, but don't die if they're
1810: * not -- just let the user know they're bad and keep going. It
1811: * doesn't do any harm in this case and may do some good.
1812: */
1813: if (cmdsOK) {
1814: Lst_ForEach(gn->commands, JobPrintCommand, (ClientData)job);
1815: }
1816: /*
1817: * Don't execute the shell, thank you.
1818: */
1819: noExec = TRUE;
1820: } else {
1821: /*
1822: * Just touch the target and note that no shell should be executed.
1823: * Set cmdFILE to stdout to make life easier. Check the commands, too,
1824: * but don't die if they're no good -- it does no harm to keep working
1825: * up the graph.
1826: */
1827: job->cmdFILE = stdout;
1.12 christos 1828: Job_Touch(gn, job->flags&JOB_SILENT);
1.1 cgd 1829: noExec = TRUE;
1830: }
1831:
1832: /*
1.16 christos 1833: * If we're not supposed to execute a shell, don't.
1.1 cgd 1834: */
1835: if (noExec) {
1836: /*
1837: * Unlink and close the command file if we opened one
1838: */
1839: if (job->cmdFILE != stdout) {
1.12 christos 1840: (void) eunlink(tfile);
1841: if (job->cmdFILE != NULL)
1842: (void) fclose(job->cmdFILE);
1.1 cgd 1843: } else {
1.12 christos 1844: (void) fflush(stdout);
1.1 cgd 1845: }
1846:
1847: /*
1848: * We only want to work our way up the graph if we aren't here because
1849: * the commands for the job were no good.
1850: */
1851: if (cmdsOK) {
1852: if (aborting == 0) {
1853: if (job->tailCmds != NILLNODE) {
1854: Lst_ForEachFrom(job->node->commands, job->tailCmds,
1855: JobSaveCommand,
1.12 christos 1856: (ClientData)job->node);
1.1 cgd 1857: }
1858: Make_Update(job->node);
1859: }
1860: free((Address)job);
1861: return(JOB_FINISHED);
1862: } else {
1863: free((Address)job);
1864: return(JOB_ERROR);
1865: }
1866: } else {
1.12 christos 1867: (void) fflush(job->cmdFILE);
1868: (void) eunlink(tfile);
1.1 cgd 1869: }
1870:
1871: /*
1872: * Set up the control arguments to the shell. This is based on the flags
1873: * set earlier for this job.
1874: */
1875: JobMakeArgv(job, argv);
1876:
1877: /*
1878: * If we're using pipes to catch output, create the pipe by which we'll
1879: * get the shell's output. If we're using files, print out that we're
1880: * starting a job and then set up its temporary-file name. This is just
1881: * tfile with two extra digits tacked on -- jobno.
1882: */
1.12 christos 1883: if (!compatMake || (job->flags & JOB_FIRST)) {
1.1 cgd 1884: if (usePipes) {
1885: int fd[2];
1.12 christos 1886: if (pipe(fd) == -1)
1887: Punt("Cannot create pipe: %s", strerror(errno));
1.1 cgd 1888: job->inPipe = fd[0];
1889: job->outPipe = fd[1];
1.12 christos 1890: (void) fcntl(job->inPipe, F_SETFD, 1);
1891: (void) fcntl(job->outPipe, F_SETFD, 1);
1.1 cgd 1892: } else {
1.12 christos 1893: (void) fprintf(stdout, "Remaking `%s'\n", gn->name);
1894: (void) fflush(stdout);
1895: sprintf(job->outFile, "%s%02d", tfile, jobno);
1.1 cgd 1896: jobno = (jobno + 1) % 100;
1897: job->outFd = open(job->outFile,O_WRONLY|O_CREAT|O_APPEND,0600);
1.12 christos 1898: (void) fcntl(job->outFd, F_SETFD, 1);
1.1 cgd 1899: }
1900: }
1901:
1.12 christos 1902: #ifdef REMOTE
1903: if (!(gn->type & OP_NOEXPORT) && !(runLocalFirst && nLocal < maxLocal)) {
1904: #ifdef RMT_NO_EXEC
1905: local = !Rmt_Export(shellPath, argv, job);
1906: #else
1907: local = !Rmt_Begin(shellPath, argv, job->node);
1908: #endif /* RMT_NO_EXEC */
1909: if (!local) {
1910: job->flags |= JOB_REMOTE;
1911: }
1912: } else
1913: #endif
1914: local = TRUE;
1.1 cgd 1915:
1916: if (local && (((nLocal >= maxLocal) &&
1.12 christos 1917: !(job->flags & JOB_SPECIAL) &&
1918: #ifdef REMOTE
1919: (!(gn->type & OP_NOEXPORT) || (maxLocal != 0))
1920: #else
1921: (maxLocal != 0)
1922: #endif
1923: )))
1.1 cgd 1924: {
1925: /*
1926: * The job can only be run locally, but we've hit the limit of
1927: * local concurrency, so put the job on hold until some other job
1.16 christos 1928: * finishes. Note that the special jobs (.BEGIN, .INTERRUPT and .END)
1.1 cgd 1929: * may be run locally even when the local limit has been reached
1.16 christos 1930: * (e.g. when maxLocal == 0), though they will be exported if at
1.12 christos 1931: * all possible. In addition, any target marked with .NOEXPORT will
1932: * be run locally if maxLocal is 0.
1.1 cgd 1933: */
1934: jobFull = TRUE;
1.16 christos 1935:
1.1 cgd 1936: if (DEBUG(JOB)) {
1.12 christos 1937: (void) fprintf(stdout, "Can only run job locally.\n");
1938: (void) fflush(stdout);
1.1 cgd 1939: }
1940: job->flags |= JOB_RESTART;
1.12 christos 1941: (void) Lst_AtEnd(stoppedJobs, (ClientData)job);
1.1 cgd 1942: } else {
1943: if ((nLocal >= maxLocal) && local) {
1944: /*
1.16 christos 1945: * If we're running this job locally as a special case (see above),
1.1 cgd 1946: * at least say the table is full.
1947: */
1948: jobFull = TRUE;
1949: if (DEBUG(JOB)) {
1.12 christos 1950: (void) fprintf(stdout, "Local job queue is full.\n");
1951: (void) fflush(stdout);
1.1 cgd 1952: }
1953: }
1954: JobExec(job, argv);
1955: }
1956: return(JOB_RUNNING);
1957: }
1958:
1.16 christos 1959: static char *
1.12 christos 1960: JobOutput(job, cp, endp, msg)
1961: register Job *job;
1962: register char *cp, *endp;
1963: int msg;
1964: {
1965: register char *ecp;
1966:
1967: if (commandShell->noPrint) {
1968: ecp = Str_FindSubstring(cp, commandShell->noPrint);
1969: while (ecp != NULL) {
1970: if (cp != ecp) {
1971: *ecp = '\0';
1972: if (msg && job->node != lastNode) {
1973: MESSAGE(stdout, job->node);
1974: lastNode = job->node;
1975: }
1976: /*
1977: * The only way there wouldn't be a newline after
1978: * this line is if it were the last in the buffer.
1979: * however, since the non-printable comes after it,
1980: * there must be a newline, so we don't print one.
1981: */
1982: (void) fprintf(stdout, "%s", cp);
1983: (void) fflush(stdout);
1984: }
1985: cp = ecp + commandShell->noPLen;
1986: if (cp != endp) {
1987: /*
1988: * Still more to print, look again after skipping
1989: * the whitespace following the non-printable
1990: * command....
1991: */
1992: cp++;
1993: while (*cp == ' ' || *cp == '\t' || *cp == '\n') {
1994: cp++;
1995: }
1996: ecp = Str_FindSubstring(cp, commandShell->noPrint);
1997: } else {
1998: return cp;
1999: }
2000: }
2001: }
2002: return cp;
2003: }
2004:
1.1 cgd 2005: /*-
2006: *-----------------------------------------------------------------------
2007: * JobDoOutput --
2008: * This function is called at different times depending on
2009: * whether the user has specified that output is to be collected
2010: * via pipes or temporary files. In the former case, we are called
2011: * whenever there is something to read on the pipe. We collect more
2012: * output from the given job and store it in the job's outBuf. If
2013: * this makes up a line, we print it tagged by the job's identifier,
2014: * as necessary.
2015: * If output has been collected in a temporary file, we open the
2016: * file and read it line by line, transfering it to our own
2017: * output channel until the file is empty. At which point we
2018: * remove the temporary file.
2019: * In both cases, however, we keep our figurative eye out for the
2020: * 'noPrint' line for the shell from which the output came. If
2021: * we recognize a line, we don't print it. If the command is not
1.16 christos 2022: * alone on the line (the character after it is not \0 or \n), we
1.1 cgd 2023: * do print whatever follows it.
2024: *
2025: * Results:
2026: * None
2027: *
2028: * Side Effects:
2029: * curPos may be shifted as may the contents of outBuf.
2030: *-----------------------------------------------------------------------
2031: */
1.12 christos 2032: STATIC void
2033: JobDoOutput(job, finish)
1.1 cgd 2034: register Job *job; /* the job whose output needs printing */
2035: Boolean finish; /* TRUE if this is the last time we'll be
2036: * called for this job */
2037: {
2038: Boolean gotNL = FALSE; /* true if got a newline */
1.12 christos 2039: Boolean fbuf; /* true if our buffer filled up */
1.1 cgd 2040: register int nr; /* number of bytes read */
2041: register int i; /* auxiliary index into outBuf */
1.16 christos 2042: register int max; /* limit for i (end of current data) */
2043: int nRead; /* (Temporary) number of bytes read */
1.1 cgd 2044:
2045: FILE *oFILE; /* Stream pointer to shell's output file */
2046: char inLine[132];
2047:
1.16 christos 2048:
1.1 cgd 2049: if (usePipes) {
2050: /*
2051: * Read as many bytes as will fit in the buffer.
2052: */
2053: end_loop:
1.12 christos 2054: gotNL = FALSE;
2055: fbuf = FALSE;
1.16 christos 2056:
1.12 christos 2057: nRead = read(job->inPipe, &job->outBuf[job->curPos],
1.1 cgd 2058: JOB_BUFSIZE - job->curPos);
2059: if (nRead < 0) {
2060: if (DEBUG(JOB)) {
2061: perror("JobDoOutput(piperead)");
2062: }
2063: nr = 0;
2064: } else {
2065: nr = nRead;
2066: }
2067:
2068: /*
1.16 christos 2069: * If we hit the end-of-file (the job is dead), we must flush its
1.1 cgd 2070: * remaining output, so pretend we read a newline if there's any
2071: * output remaining in the buffer.
2072: * Also clear the 'finish' flag so we stop looping.
2073: */
2074: if ((nr == 0) && (job->curPos != 0)) {
2075: job->outBuf[job->curPos] = '\n';
2076: nr = 1;
2077: finish = FALSE;
2078: } else if (nr == 0) {
2079: finish = FALSE;
2080: }
1.16 christos 2081:
1.1 cgd 2082: /*
2083: * Look for the last newline in the bytes we just got. If there is
2084: * one, break out of the loop with 'i' as its index and gotNL set
1.16 christos 2085: * TRUE.
1.1 cgd 2086: */
2087: max = job->curPos + nr;
2088: for (i = job->curPos + nr - 1; i >= job->curPos; i--) {
2089: if (job->outBuf[i] == '\n') {
2090: gotNL = TRUE;
2091: break;
2092: } else if (job->outBuf[i] == '\0') {
2093: /*
2094: * Why?
2095: */
2096: job->outBuf[i] = ' ';
2097: }
2098: }
1.16 christos 2099:
1.1 cgd 2100: if (!gotNL) {
2101: job->curPos += nr;
2102: if (job->curPos == JOB_BUFSIZE) {
2103: /*
2104: * If we've run out of buffer space, we have no choice
1.16 christos 2105: * but to print the stuff. sigh.
1.1 cgd 2106: */
1.12 christos 2107: fbuf = TRUE;
1.1 cgd 2108: i = job->curPos;
2109: }
2110: }
1.12 christos 2111: if (gotNL || fbuf) {
1.1 cgd 2112: /*
2113: * Need to send the output to the screen. Null terminate it
2114: * first, overwriting the newline character if there was one.
1.16 christos 2115: * So long as the line isn't one we should filter (according
1.1 cgd 2116: * to the shell description), we print the line, preceeded
2117: * by a target banner if this target isn't the same as the
2118: * one for which we last printed something.
2119: * The rest of the data in the buffer are then shifted down
1.16 christos 2120: * to the start of the buffer and curPos is set accordingly.
1.1 cgd 2121: */
2122: job->outBuf[i] = '\0';
2123: if (i >= job->curPos) {
1.12 christos 2124: char *cp;
1.16 christos 2125:
2126: cp = JobOutput(job, job->outBuf, &job->outBuf[i], FALSE);
1.1 cgd 2127:
2128: /*
2129: * There's still more in that thar buffer. This time, though,
2130: * we know there's no newline at the end, so we add one of
2131: * our own free will.
2132: */
2133: if (*cp != '\0') {
2134: if (job->node != lastNode) {
1.12 christos 2135: MESSAGE(stdout, job->node);
1.1 cgd 2136: lastNode = job->node;
2137: }
1.12 christos 2138: (void) fprintf(stdout, "%s%s", cp, gotNL ? "\n" : "");
2139: (void) fflush(stdout);
1.1 cgd 2140: }
2141: }
2142: if (i < max - 1) {
1.5 cgd 2143: /* shift the remaining characters down */
1.16 christos 2144: (void) memcpy(job->outBuf, &job->outBuf[i + 1], max - (i + 1));
2145: job->curPos = max - (i + 1);
2146:
1.1 cgd 2147: } else {
2148: /*
2149: * We have written everything out, so we just start over
2150: * from the start of the buffer. No copying. No nothing.
2151: */
2152: job->curPos = 0;
2153: }
2154: }
2155: if (finish) {
2156: /*
2157: * If the finish flag is true, we must loop until we hit
1.16 christos 2158: * end-of-file on the pipe. This is guaranteed to happen
2159: * eventually since the other end of the pipe is now closed
2160: * (we closed it explicitly and the child has exited). When
2161: * we do get an EOF, finish will be set FALSE and we'll fall
2162: * through and out.
1.1 cgd 2163: */
2164: goto end_loop;
2165: }
2166: } else {
2167: /*
2168: * We've been called to retrieve the output of the job from the
2169: * temporary file where it's been squirreled away. This consists of
2170: * opening the file, reading the output line by line, being sure not
2171: * to print the noPrint line for the shell we used, then close and
2172: * remove the temporary file. Very simple.
2173: *
2174: * Change to read in blocks and do FindSubString type things as for
2175: * pipes? That would allow for "@echo -n..."
2176: */
1.12 christos 2177: oFILE = fopen(job->outFile, "r");
2178: if (oFILE != NULL) {
2179: (void) fprintf(stdout, "Results of making %s:\n", job->node->name);
2180: (void) fflush(stdout);
2181: while (fgets(inLine, sizeof(inLine), oFILE) != NULL) {
2182: register char *cp, *endp, *oendp;
1.1 cgd 2183:
2184: cp = inLine;
1.12 christos 2185: oendp = endp = inLine + strlen(inLine);
1.1 cgd 2186: if (endp[-1] == '\n') {
2187: *--endp = '\0';
2188: }
1.12 christos 2189: cp = JobOutput(job, inLine, endp, FALSE);
1.1 cgd 2190:
2191: /*
2192: * There's still more in that thar buffer. This time, though,
2193: * we know there's no newline at the end, so we add one of
2194: * our own free will.
2195: */
1.12 christos 2196: (void) fprintf(stdout, "%s", cp);
2197: (void) fflush(stdout);
2198: if (endp != oendp) {
2199: (void) fprintf(stdout, "\n");
2200: (void) fflush(stdout);
1.1 cgd 2201: }
2202: }
1.12 christos 2203: (void) fclose(oFILE);
2204: (void) eunlink(job->outFile);
1.1 cgd 2205: }
2206: }
2207: }
2208:
2209: /*-
2210: *-----------------------------------------------------------------------
2211: * Job_CatchChildren --
2212: * Handle the exit of a child. Called from Make_Make.
2213: *
2214: * Results:
2215: * none.
2216: *
2217: * Side Effects:
2218: * The job descriptor is removed from the list of children.
2219: *
2220: * Notes:
2221: * We do waits, blocking or not, according to the wisdom of our
2222: * caller, until there are no more children to report. For each
2223: * job, call JobFinish to finish things off. This will take care of
2224: * putting jobs on the stoppedJobs queue.
2225: *
2226: *-----------------------------------------------------------------------
2227: */
2228: void
1.12 christos 2229: Job_CatchChildren(block)
1.1 cgd 2230: Boolean block; /* TRUE if should block on the wait. */
2231: {
2232: int pid; /* pid of dead child */
2233: register Job *job; /* job descriptor for dead child */
2234: LstNode jnode; /* list element for finding job */
1.13 christos 2235: int status; /* Exit/termination status */
1.1 cgd 2236:
2237: /*
2238: * Don't even bother if we know there's no one around.
2239: */
2240: if (nLocal == 0) {
2241: return;
2242: }
1.16 christos 2243:
1.13 christos 2244: while ((pid = waitpid((pid_t) -1, &status,
2245: (block?0:WNOHANG)|WUNTRACED)) > 0)
1.1 cgd 2246: {
1.12 christos 2247: if (DEBUG(JOB)) {
2248: (void) fprintf(stdout, "Process %d exited or stopped.\n", pid);
2249: (void) fflush(stdout);
2250: }
1.16 christos 2251:
1.1 cgd 2252:
1.12 christos 2253: jnode = Lst_Find(jobs, (ClientData)&pid, JobCmpPid);
1.1 cgd 2254:
2255: if (jnode == NILLNODE) {
1.12 christos 2256: if (WIFSIGNALED(status) && (WTERMSIG(status) == SIGCONT)) {
1.6 jtc 2257: jnode = Lst_Find(stoppedJobs, (ClientData) &pid, JobCmpPid);
1.1 cgd 2258: if (jnode == NILLNODE) {
1.16 christos 2259: Error("Resumed child (%d) not in table", pid);
1.1 cgd 2260: continue;
2261: }
2262: job = (Job *)Lst_Datum(jnode);
1.12 christos 2263: (void) Lst_Remove(stoppedJobs, jnode);
1.1 cgd 2264: } else {
1.16 christos 2265: Error("Child (%d) not in table?", pid);
1.1 cgd 2266: continue;
2267: }
2268: } else {
1.12 christos 2269: job = (Job *) Lst_Datum(jnode);
2270: (void) Lst_Remove(jobs, jnode);
1.1 cgd 2271: nJobs -= 1;
2272: if (jobFull && DEBUG(JOB)) {
1.12 christos 2273: (void) fprintf(stdout, "Job queue is no longer full.\n");
2274: (void) fflush(stdout);
1.1 cgd 2275: }
2276: jobFull = FALSE;
1.12 christos 2277: #ifdef REMOTE
2278: if (!(job->flags & JOB_REMOTE)) {
2279: if (DEBUG(JOB)) {
2280: (void) fprintf(stdout,
2281: "Job queue has one fewer local process.\n");
2282: (void) fflush(stdout);
2283: }
2284: nLocal -= 1;
2285: }
2286: #else
1.1 cgd 2287: nLocal -= 1;
1.12 christos 2288: #endif
1.1 cgd 2289: }
2290:
1.12 christos 2291: JobFinish(job, &status);
1.1 cgd 2292: }
2293: }
2294:
2295: /*-
2296: *-----------------------------------------------------------------------
2297: * Job_CatchOutput --
2298: * Catch the output from our children, if we're using
2299: * pipes do so. Otherwise just block time until we get a
1.16 christos 2300: * signal (most likely a SIGCHLD) since there's no point in
1.1 cgd 2301: * just spinning when there's nothing to do and the reaping
1.16 christos 2302: * of a child can wait for a while.
1.1 cgd 2303: *
2304: * Results:
1.16 christos 2305: * None
1.1 cgd 2306: *
2307: * Side Effects:
2308: * Output is read from pipes if we're piping.
2309: * -----------------------------------------------------------------------
2310: */
2311: void
1.12 christos 2312: Job_CatchOutput()
1.1 cgd 2313: {
2314: int nfds;
2315: struct timeval timeout;
2316: fd_set readfds;
2317: register LstNode ln;
2318: register Job *job;
1.5 cgd 2319: #ifdef RMT_WILL_WATCH
1.1 cgd 2320: int pnJobs; /* Previous nJobs */
1.5 cgd 2321: #endif
1.1 cgd 2322:
1.12 christos 2323: (void) fflush(stdout);
1.1 cgd 2324: #ifdef RMT_WILL_WATCH
2325: pnJobs = nJobs;
2326:
2327: /*
2328: * It is possible for us to be called with nJobs equal to 0. This happens
2329: * if all the jobs finish and a job that is stopped cannot be run
2330: * locally (eg if maxLocal is 0) and cannot be exported. The job will
2331: * be placed back on the stoppedJobs queue, Job_Empty() will return false,
2332: * Make_Run will call us again when there's nothing for which to wait.
2333: * nJobs never changes, so we loop forever. Hence the check. It could
2334: * be argued that we should sleep for a bit so as not to swamp the
2335: * exportation system with requests. Perhaps we should.
2336: *
2337: * NOTE: IT IS THE RESPONSIBILITY OF Rmt_Wait TO CALL Job_CatchChildren
2338: * IN A TIMELY FASHION TO CATCH ANY LOCALLY RUNNING JOBS THAT EXIT.
2339: * It may use the variable nLocal to determine if it needs to call
1.16 christos 2340: * Job_CatchChildren (if nLocal is 0, there's nothing for which to
1.1 cgd 2341: * wait...)
2342: */
2343: while (nJobs != 0 && pnJobs == nJobs) {
2344: Rmt_Wait();
2345: }
2346: #else
2347: if (usePipes) {
2348: readfds = outputs;
2349: timeout.tv_sec = SEL_SEC;
2350: timeout.tv_usec = SEL_USEC;
2351:
1.12 christos 2352: if ((nfds = select(FD_SETSIZE, &readfds, (fd_set *) 0,
2353: (fd_set *) 0, &timeout)) <= 0)
1.1 cgd 2354: return;
1.12 christos 2355: else {
2356: if (Lst_Open(jobs) == FAILURE) {
2357: Punt("Cannot open job table");
1.1 cgd 2358: }
1.12 christos 2359: while (nfds && (ln = Lst_Next(jobs)) != NILLNODE) {
2360: job = (Job *) Lst_Datum(ln);
1.1 cgd 2361: if (FD_ISSET(job->inPipe, &readfds)) {
1.12 christos 2362: JobDoOutput(job, FALSE);
1.1 cgd 2363: nfds -= 1;
2364: }
2365: }
1.12 christos 2366: Lst_Close(jobs);
1.1 cgd 2367: }
2368: }
2369: #endif /* RMT_WILL_WATCH */
2370: }
2371:
2372: /*-
2373: *-----------------------------------------------------------------------
2374: * Job_Make --
2375: * Start the creation of a target. Basically a front-end for
2376: * JobStart used by the Make module.
2377: *
2378: * Results:
2379: * None.
2380: *
2381: * Side Effects:
2382: * Another job is started.
2383: *
2384: *-----------------------------------------------------------------------
2385: */
2386: void
1.12 christos 2387: Job_Make(gn)
1.1 cgd 2388: GNode *gn;
2389: {
1.12 christos 2390: (void) JobStart(gn, 0, NULL);
1.1 cgd 2391: }
2392:
2393: /*-
2394: *-----------------------------------------------------------------------
2395: * Job_Init --
2396: * Initialize the process module
2397: *
2398: * Results:
2399: * none
2400: *
2401: * Side Effects:
2402: * lists and counters are initialized
2403: *-----------------------------------------------------------------------
2404: */
2405: void
1.12 christos 2406: Job_Init(maxproc, maxlocal)
1.1 cgd 2407: int maxproc; /* the greatest number of jobs which may be
2408: * running at one time */
2409: int maxlocal; /* the greatest number of local jobs which may
2410: * be running at once. */
2411: {
2412: GNode *begin; /* node for commands to do at the very start */
2413:
1.24 christos 2414: (void) sprintf(tfile, "/tmp/make%05ld", (unsigned long)getpid());
1.1 cgd 2415:
1.12 christos 2416: jobs = Lst_Init(FALSE);
1.1 cgd 2417: stoppedJobs = Lst_Init(FALSE);
2418: maxJobs = maxproc;
2419: maxLocal = maxlocal;
2420: nJobs = 0;
2421: nLocal = 0;
2422: jobFull = FALSE;
2423:
2424: aborting = 0;
2425: errors = 0;
2426:
2427: lastNode = NILGNODE;
2428:
1.12 christos 2429: if (maxJobs == 1
2430: #ifdef REMOTE
2431: || noMessages
2432: #endif
2433: ) {
1.1 cgd 2434: /*
2435: * If only one job can run at a time, there's no need for a banner,
2436: * no is there?
2437: */
2438: targFmt = "";
2439: } else {
2440: targFmt = TARG_FMT;
2441: }
1.16 christos 2442:
1.12 christos 2443: if (shellPath == NULL) {
1.1 cgd 2444: /*
2445: * The user didn't specify a shell to use, so we are using the
2446: * default one... Both the absolute path and the last component
2447: * must be set. The last component is taken from the 'name' field
2448: * of the default shell description pointed-to by commandShell.
2449: * All default shells are located in _PATH_DEFSHELLDIR.
2450: */
2451: shellName = commandShell->name;
1.12 christos 2452: shellPath = str_concat(_PATH_DEFSHELLDIR, shellName, STR_ADDSLASH);
1.1 cgd 2453: }
2454:
1.12 christos 2455: if (commandShell->exit == NULL) {
1.1 cgd 2456: commandShell->exit = "";
2457: }
1.12 christos 2458: if (commandShell->echo == NULL) {
1.1 cgd 2459: commandShell->echo = "";
2460: }
2461:
2462: /*
2463: * Catch the four signals that POSIX specifies if they aren't ignored.
2464: * JobPassSig will take care of calling JobInterrupt if appropriate.
2465: */
1.12 christos 2466: if (signal(SIGINT, SIG_IGN) != SIG_IGN) {
2467: (void) signal(SIGINT, JobPassSig);
1.1 cgd 2468: }
1.12 christos 2469: if (signal(SIGHUP, SIG_IGN) != SIG_IGN) {
2470: (void) signal(SIGHUP, JobPassSig);
1.1 cgd 2471: }
1.12 christos 2472: if (signal(SIGQUIT, SIG_IGN) != SIG_IGN) {
2473: (void) signal(SIGQUIT, JobPassSig);
1.1 cgd 2474: }
1.12 christos 2475: if (signal(SIGTERM, SIG_IGN) != SIG_IGN) {
2476: (void) signal(SIGTERM, JobPassSig);
1.1 cgd 2477: }
2478: /*
2479: * There are additional signals that need to be caught and passed if
2480: * either the export system wants to be told directly of signals or if
1.16 christos 2481: * we're giving each job its own process group (since then it won't get
1.1 cgd 2482: * signals from the terminal driver as we own the terminal)
2483: */
2484: #if defined(RMT_WANTS_SIGNALS) || defined(USE_PGRP)
1.12 christos 2485: if (signal(SIGTSTP, SIG_IGN) != SIG_IGN) {
2486: (void) signal(SIGTSTP, JobPassSig);
1.1 cgd 2487: }
1.12 christos 2488: if (signal(SIGTTOU, SIG_IGN) != SIG_IGN) {
2489: (void) signal(SIGTTOU, JobPassSig);
1.1 cgd 2490: }
1.12 christos 2491: if (signal(SIGTTIN, SIG_IGN) != SIG_IGN) {
2492: (void) signal(SIGTTIN, JobPassSig);
1.1 cgd 2493: }
1.12 christos 2494: if (signal(SIGWINCH, SIG_IGN) != SIG_IGN) {
2495: (void) signal(SIGWINCH, JobPassSig);
1.1 cgd 2496: }
2497: #endif
1.16 christos 2498:
1.12 christos 2499: begin = Targ_FindNode(".BEGIN", TARG_NOCREATE);
1.1 cgd 2500:
2501: if (begin != NILGNODE) {
1.12 christos 2502: JobStart(begin, JOB_SPECIAL, (Job *)0);
1.1 cgd 2503: while (nJobs) {
2504: Job_CatchOutput();
2505: #ifndef RMT_WILL_WATCH
1.12 christos 2506: Job_CatchChildren(!usePipes);
1.1 cgd 2507: #endif /* RMT_WILL_WATCH */
2508: }
2509: }
1.12 christos 2510: postCommands = Targ_FindNode(".END", TARG_CREATE);
1.1 cgd 2511: }
2512:
2513: /*-
2514: *-----------------------------------------------------------------------
2515: * Job_Full --
2516: * See if the job table is full. It is considered full if it is OR
2517: * if we are in the process of aborting OR if we have
2518: * reached/exceeded our local quota. This prevents any more jobs
2519: * from starting up.
2520: *
2521: * Results:
2522: * TRUE if the job table is full, FALSE otherwise
2523: * Side Effects:
2524: * None.
2525: *-----------------------------------------------------------------------
2526: */
2527: Boolean
1.12 christos 2528: Job_Full()
1.1 cgd 2529: {
1.12 christos 2530: return(aborting || jobFull);
1.1 cgd 2531: }
2532:
2533: /*-
2534: *-----------------------------------------------------------------------
2535: * Job_Empty --
2536: * See if the job table is empty. Because the local concurrency may
2537: * be set to 0, it is possible for the job table to become empty,
2538: * while the list of stoppedJobs remains non-empty. In such a case,
2539: * we want to restart as many jobs as we can.
2540: *
2541: * Results:
2542: * TRUE if it is. FALSE if it ain't.
2543: *
2544: * Side Effects:
2545: * None.
2546: *
2547: * -----------------------------------------------------------------------
2548: */
2549: Boolean
1.12 christos 2550: Job_Empty()
1.1 cgd 2551: {
2552: if (nJobs == 0) {
2553: if (!Lst_IsEmpty(stoppedJobs) && !aborting) {
2554: /*
2555: * The job table is obviously not full if it has no jobs in
2556: * it...Try and restart the stopped jobs.
2557: */
2558: jobFull = FALSE;
1.12 christos 2559: JobRestartJobs();
1.1 cgd 2560: return(FALSE);
2561: } else {
2562: return(TRUE);
2563: }
2564: } else {
2565: return(FALSE);
2566: }
2567: }
2568:
2569: /*-
2570: *-----------------------------------------------------------------------
2571: * JobMatchShell --
2572: * Find a matching shell in 'shells' given its final component.
2573: *
2574: * Results:
2575: * A pointer to the Shell structure.
2576: *
2577: * Side Effects:
2578: * None.
2579: *
2580: *-----------------------------------------------------------------------
2581: */
2582: static Shell *
1.12 christos 2583: JobMatchShell(name)
1.1 cgd 2584: char *name; /* Final component of shell path */
2585: {
2586: register Shell *sh; /* Pointer into shells table */
2587: Shell *match; /* Longest-matching shell */
2588: register char *cp1,
2589: *cp2;
2590: char *eoname;
2591:
1.12 christos 2592: eoname = name + strlen(name);
1.1 cgd 2593:
1.12 christos 2594: match = NULL;
1.1 cgd 2595:
2596: for (sh = shells; sh->name != NULL; sh++) {
1.12 christos 2597: for (cp1 = eoname - strlen(sh->name), cp2 = sh->name;
1.1 cgd 2598: *cp1 != '\0' && *cp1 == *cp2;
2599: cp1++, cp2++) {
2600: continue;
2601: }
2602: if (*cp1 != *cp2) {
2603: continue;
1.12 christos 2604: } else if (match == NULL || strlen(match->name) < strlen(sh->name)) {
2605: match = sh;
1.1 cgd 2606: }
2607: }
1.12 christos 2608: return(match == NULL ? sh : match);
1.1 cgd 2609: }
2610:
2611: /*-
2612: *-----------------------------------------------------------------------
2613: * Job_ParseShell --
2614: * Parse a shell specification and set up commandShell, shellPath
2615: * and shellName appropriately.
2616: *
2617: * Results:
2618: * FAILURE if the specification was incorrect.
2619: *
2620: * Side Effects:
2621: * commandShell points to a Shell structure (either predefined or
2622: * created from the shell spec), shellPath is the full path of the
2623: * shell described by commandShell, while shellName is just the
2624: * final component of shellPath.
2625: *
2626: * Notes:
2627: * A shell specification consists of a .SHELL target, with dependency
2628: * operator, followed by a series of blank-separated words. Double
2629: * quotes can be used to use blanks in words. A backslash escapes
2630: * anything (most notably a double-quote and a space) and
2631: * provides the functionality it does in C. Each word consists of
2632: * keyword and value separated by an equal sign. There should be no
2633: * unnecessary spaces in the word. The keywords are as follows:
2634: * name Name of shell.
2635: * path Location of shell. Overrides "name" if given
2636: * quiet Command to turn off echoing.
2637: * echo Command to turn echoing on
2638: * filter Result of turning off echoing that shouldn't be
2639: * printed.
2640: * echoFlag Flag to turn echoing on at the start
2641: * errFlag Flag to turn error checking on at the start
2642: * hasErrCtl True if shell has error checking control
2643: * check Command to turn on error checking if hasErrCtl
2644: * is TRUE or template of command to echo a command
2645: * for which error checking is off if hasErrCtl is
2646: * FALSE.
2647: * ignore Command to turn off error checking if hasErrCtl
2648: * is TRUE or template of command to execute a
2649: * command so as to ignore any errors it returns if
2650: * hasErrCtl is FALSE.
2651: *
2652: *-----------------------------------------------------------------------
2653: */
2654: ReturnStatus
1.12 christos 2655: Job_ParseShell(line)
1.1 cgd 2656: char *line; /* The shell spec */
2657: {
2658: char **words;
2659: int wordCount;
2660: register char **argv;
2661: register int argc;
2662: char *path;
2663: Shell newShell;
2664: Boolean fullSpec = FALSE;
2665:
1.24 christos 2666: while (isspace((unsigned char)*line)) {
1.1 cgd 2667: line++;
2668: }
1.22 christos 2669:
2670: if (shellArgv)
2671: free(shellArgv);
2672:
2673: words = brk_string(line, &wordCount, TRUE, &shellArgv);
1.1 cgd 2674:
1.12 christos 2675: memset((Address)&newShell, 0, sizeof(newShell));
1.16 christos 2676:
1.1 cgd 2677: /*
2678: * Parse the specification by keyword
2679: */
1.22 christos 2680: for (path = NULL, argc = wordCount - 1, argv = words;
2681: argc != 0;
2682: argc--, argv++) {
2683: if (strncmp(*argv, "path=", 5) == 0) {
2684: path = &argv[0][5];
2685: } else if (strncmp(*argv, "name=", 5) == 0) {
2686: newShell.name = &argv[0][5];
2687: } else {
2688: if (strncmp(*argv, "quiet=", 6) == 0) {
2689: newShell.echoOff = &argv[0][6];
2690: } else if (strncmp(*argv, "echo=", 5) == 0) {
2691: newShell.echoOn = &argv[0][5];
2692: } else if (strncmp(*argv, "filter=", 7) == 0) {
2693: newShell.noPrint = &argv[0][7];
2694: newShell.noPLen = strlen(newShell.noPrint);
2695: } else if (strncmp(*argv, "echoFlag=", 9) == 0) {
2696: newShell.echo = &argv[0][9];
2697: } else if (strncmp(*argv, "errFlag=", 8) == 0) {
2698: newShell.exit = &argv[0][8];
2699: } else if (strncmp(*argv, "hasErrCtl=", 10) == 0) {
2700: char c = argv[0][10];
2701: newShell.hasErrCtl = !((c != 'Y') && (c != 'y') &&
1.12 christos 2702: (c != 'T') && (c != 't'));
1.22 christos 2703: } else if (strncmp(*argv, "check=", 6) == 0) {
2704: newShell.errCheck = &argv[0][6];
2705: } else if (strncmp(*argv, "ignore=", 7) == 0) {
2706: newShell.ignErr = &argv[0][7];
2707: } else {
2708: Parse_Error(PARSE_FATAL, "Unknown keyword \"%s\"",
2709: *argv);
2710: free(words);
2711: return(FAILURE);
2712: }
2713: fullSpec = TRUE;
2714: }
1.1 cgd 2715: }
2716:
1.12 christos 2717: if (path == NULL) {
1.1 cgd 2718: /*
2719: * If no path was given, the user wants one of the pre-defined shells,
2720: * yes? So we find the one s/he wants with the help of JobMatchShell
2721: * and set things up the right way. shellPath will be set up by
2722: * Job_Init.
2723: */
1.12 christos 2724: if (newShell.name == NULL) {
2725: Parse_Error(PARSE_FATAL, "Neither path nor name specified");
2726: return(FAILURE);
1.1 cgd 2727: } else {
1.12 christos 2728: commandShell = JobMatchShell(newShell.name);
1.1 cgd 2729: shellName = newShell.name;
2730: }
2731: } else {
2732: /*
1.16 christos 2733: * The user provided a path. If s/he gave nothing else (fullSpec is
1.1 cgd 2734: * FALSE), try and find a matching shell in the ones we know of.
2735: * Else we just take the specification at its word and copy it
2736: * to a new location. In either case, we need to record the
2737: * path the user gave for the shell.
2738: */
2739: shellPath = path;
1.12 christos 2740: path = strrchr(path, '/');
2741: if (path == NULL) {
1.1 cgd 2742: path = shellPath;
2743: } else {
2744: path += 1;
2745: }
1.12 christos 2746: if (newShell.name != NULL) {
1.1 cgd 2747: shellName = newShell.name;
2748: } else {
2749: shellName = path;
2750: }
2751: if (!fullSpec) {
1.12 christos 2752: commandShell = JobMatchShell(shellName);
1.1 cgd 2753: } else {
2754: commandShell = (Shell *) emalloc(sizeof(Shell));
2755: *commandShell = newShell;
2756: }
2757: }
2758:
2759: if (commandShell->echoOn && commandShell->echoOff) {
2760: commandShell->hasEchoCtl = TRUE;
2761: }
1.16 christos 2762:
1.1 cgd 2763: if (!commandShell->hasErrCtl) {
1.12 christos 2764: if (commandShell->errCheck == NULL) {
1.1 cgd 2765: commandShell->errCheck = "";
2766: }
1.12 christos 2767: if (commandShell->ignErr == NULL) {
1.1 cgd 2768: commandShell->ignErr = "%s\n";
2769: }
2770: }
1.16 christos 2771:
1.1 cgd 2772: /*
2773: * Do not free up the words themselves, since they might be in use by the
1.22 christos 2774: * shell specification.
1.1 cgd 2775: */
1.12 christos 2776: free(words);
1.1 cgd 2777: return SUCCESS;
2778: }
2779:
2780: /*-
2781: *-----------------------------------------------------------------------
2782: * JobInterrupt --
2783: * Handle the receipt of an interrupt.
2784: *
2785: * Results:
2786: * None
2787: *
2788: * Side Effects:
2789: * All children are killed. Another job will be started if the
2790: * .INTERRUPT target was given.
2791: *-----------------------------------------------------------------------
2792: */
2793: static void
1.12 christos 2794: JobInterrupt(runINTERRUPT, signo)
1.1 cgd 2795: int runINTERRUPT; /* Non-zero if commands for the .INTERRUPT
2796: * target should be executed */
1.12 christos 2797: int signo; /* signal received */
1.1 cgd 2798: {
2799: LstNode ln; /* element in job table */
2800: Job *job; /* job descriptor in that element */
2801: GNode *interrupt; /* the node describing the .INTERRUPT target */
1.16 christos 2802:
1.1 cgd 2803: aborting = ABORT_INTERRUPT;
2804:
1.12 christos 2805: (void) Lst_Open(jobs);
2806: while ((ln = Lst_Next(jobs)) != NILLNODE) {
2807: job = (Job *) Lst_Datum(ln);
1.1 cgd 2808:
1.12 christos 2809: if (!Targ_Precious(job->node)) {
2810: char *file = (job->node->path == NULL ?
1.1 cgd 2811: job->node->name :
2812: job->node->path);
1.12 christos 2813: if (!noExecute && eunlink(file) != -1) {
2814: Error("*** %s removed", file);
1.1 cgd 2815: }
2816: }
2817: #ifdef RMT_WANTS_SIGNALS
2818: if (job->flags & JOB_REMOTE) {
2819: /*
2820: * If job is remote, let the Rmt module do the killing.
2821: */
1.12 christos 2822: if (!Rmt_Signal(job, signo)) {
1.1 cgd 2823: /*
2824: * If couldn't kill the thing, finish it out now with an
2825: * error code, since no exit report will come in likely.
2826: */
1.13 christos 2827: int status;
1.1 cgd 2828:
2829: status.w_status = 0;
2830: status.w_retcode = 1;
1.12 christos 2831: JobFinish(job, &status);
1.1 cgd 2832: }
2833: } else if (job->pid) {
1.12 christos 2834: KILL(job->pid, signo);
1.1 cgd 2835: }
2836: #else
2837: if (job->pid) {
1.12 christos 2838: if (DEBUG(JOB)) {
2839: (void) fprintf(stdout,
1.16 christos 2840: "JobInterrupt passing signal to child %d.\n",
1.12 christos 2841: job->pid);
2842: (void) fflush(stdout);
2843: }
2844: KILL(job->pid, signo);
2845: }
2846: #endif /* RMT_WANTS_SIGNALS */
2847: }
2848:
2849: #ifdef REMOTE
2850: (void)Lst_Open(stoppedJobs);
2851: while ((ln = Lst_Next(stoppedJobs)) != NILLNODE) {
2852: job = (Job *) Lst_Datum(ln);
2853:
2854: if (job->flags & JOB_RESTART) {
2855: if (DEBUG(JOB)) {
2856: (void) fprintf(stdout, "%s%s",
2857: "JobInterrupt skipping job on stopped queue",
2858: "-- it was waiting to be restarted.\n");
2859: (void) fflush(stdout);
2860: }
2861: continue;
2862: }
2863: if (!Targ_Precious(job->node)) {
2864: char *file = (job->node->path == NULL ?
2865: job->node->name :
2866: job->node->path);
2867: if (eunlink(file) == 0) {
2868: Error("*** %s removed", file);
2869: }
2870: }
2871: /*
2872: * Resume the thing so it will take the signal.
2873: */
2874: if (DEBUG(JOB)) {
2875: (void) fprintf(stdout,
1.16 christos 2876: "JobInterrupt passing CONT to stopped child %d.\n",
1.12 christos 2877: job->pid);
2878: (void) fflush(stdout);
2879: }
2880: KILL(job->pid, SIGCONT);
2881: #ifdef RMT_WANTS_SIGNALS
2882: if (job->flags & JOB_REMOTE) {
2883: /*
2884: * If job is remote, let the Rmt module do the killing.
2885: */
2886: if (!Rmt_Signal(job, SIGINT)) {
2887: /*
2888: * If couldn't kill the thing, finish it out now with an
2889: * error code, since no exit report will come in likely.
2890: */
1.13 christos 2891: int status;
1.12 christos 2892: status.w_status = 0;
2893: status.w_retcode = 1;
2894: JobFinish(job, &status);
2895: }
2896: } else if (job->pid) {
2897: if (DEBUG(JOB)) {
2898: (void) fprintf(stdout,
2899: "JobInterrupt passing interrupt to stopped child %d.\n",
2900: job->pid);
2901: (void) fflush(stdout);
2902: }
1.1 cgd 2903: KILL(job->pid, SIGINT);
2904: }
2905: #endif /* RMT_WANTS_SIGNALS */
2906: }
1.12 christos 2907: #endif
2908: Lst_Close(stoppedJobs);
1.1 cgd 2909:
2910: if (runINTERRUPT && !touchFlag) {
1.12 christos 2911: interrupt = Targ_FindNode(".INTERRUPT", TARG_NOCREATE);
1.1 cgd 2912: if (interrupt != NILGNODE) {
2913: ignoreErrors = FALSE;
2914:
1.12 christos 2915: JobStart(interrupt, JOB_IGNDOTS, (Job *)0);
1.1 cgd 2916: while (nJobs) {
2917: Job_CatchOutput();
2918: #ifndef RMT_WILL_WATCH
1.12 christos 2919: Job_CatchChildren(!usePipes);
1.1 cgd 2920: #endif /* RMT_WILL_WATCH */
2921: }
2922: }
2923: }
1.12 christos 2924: (void) eunlink(tfile);
2925: exit(signo);
1.1 cgd 2926: }
2927:
2928: /*
2929: *-----------------------------------------------------------------------
1.22 christos 2930: * Job_Finish --
1.1 cgd 2931: * Do final processing such as the running of the commands
1.16 christos 2932: * attached to the .END target.
1.1 cgd 2933: *
2934: * Results:
2935: * Number of errors reported.
2936: *
2937: * Side Effects:
1.16 christos 2938: * The process' temporary file (tfile) is removed if it still
1.1 cgd 2939: * existed.
2940: *-----------------------------------------------------------------------
2941: */
2942: int
1.22 christos 2943: Job_Finish()
1.1 cgd 2944: {
1.12 christos 2945: if (postCommands != NILGNODE && !Lst_IsEmpty(postCommands->commands)) {
1.1 cgd 2946: if (errors) {
1.12 christos 2947: Error("Errors reported so .END ignored");
1.1 cgd 2948: } else {
1.12 christos 2949: JobStart(postCommands, JOB_SPECIAL | JOB_IGNDOTS, NULL);
1.1 cgd 2950:
2951: while (nJobs) {
2952: Job_CatchOutput();
2953: #ifndef RMT_WILL_WATCH
1.12 christos 2954: Job_CatchChildren(!usePipes);
1.1 cgd 2955: #endif /* RMT_WILL_WATCH */
2956: }
2957: }
2958: }
1.12 christos 2959: (void) eunlink(tfile);
1.1 cgd 2960: return(errors);
1.22 christos 2961: }
2962:
2963: /*-
2964: *-----------------------------------------------------------------------
2965: * Job_End --
2966: * Cleanup any memory used by the jobs module
2967: *
2968: * Results:
2969: * None.
2970: *
2971: * Side Effects:
2972: * Memory is freed
2973: *-----------------------------------------------------------------------
2974: */
2975: void
2976: Job_End()
2977: {
2978: if (shellArgv)
2979: free(shellArgv);
1.1 cgd 2980: }
2981:
2982: /*-
2983: *-----------------------------------------------------------------------
2984: * Job_Wait --
2985: * Waits for all running jobs to finish and returns. Sets 'aborting'
2986: * to ABORT_WAIT to prevent other jobs from starting.
2987: *
2988: * Results:
2989: * None.
2990: *
2991: * Side Effects:
2992: * Currently running jobs finish.
2993: *
2994: *-----------------------------------------------------------------------
2995: */
2996: void
2997: Job_Wait()
2998: {
2999: aborting = ABORT_WAIT;
3000: while (nJobs != 0) {
3001: Job_CatchOutput();
3002: #ifndef RMT_WILL_WATCH
3003: Job_CatchChildren(!usePipes);
3004: #endif /* RMT_WILL_WATCH */
3005: }
3006: aborting = 0;
3007: }
3008:
3009: /*-
3010: *-----------------------------------------------------------------------
3011: * Job_AbortAll --
3012: * Abort all currently running jobs without handling output or anything.
3013: * This function is to be called only in the event of a major
3014: * error. Most definitely NOT to be called from JobInterrupt.
3015: *
3016: * Results:
3017: * None
3018: *
3019: * Side Effects:
3020: * All children are killed, not just the firstborn
3021: *-----------------------------------------------------------------------
3022: */
3023: void
1.12 christos 3024: Job_AbortAll()
1.1 cgd 3025: {
1.12 christos 3026: LstNode ln; /* element in job table */
1.1 cgd 3027: Job *job; /* the job descriptor in that element */
3028: int foo;
1.16 christos 3029:
1.1 cgd 3030: aborting = ABORT_ERROR;
1.16 christos 3031:
1.1 cgd 3032: if (nJobs) {
3033:
1.12 christos 3034: (void) Lst_Open(jobs);
3035: while ((ln = Lst_Next(jobs)) != NILLNODE) {
3036: job = (Job *) Lst_Datum(ln);
1.1 cgd 3037:
3038: /*
3039: * kill the child process with increasingly drastic signals to make
1.16 christos 3040: * darn sure it's dead.
1.1 cgd 3041: */
3042: #ifdef RMT_WANTS_SIGNALS
3043: if (job->flags & JOB_REMOTE) {
3044: Rmt_Signal(job, SIGINT);
3045: Rmt_Signal(job, SIGKILL);
3046: } else {
3047: KILL(job->pid, SIGINT);
3048: KILL(job->pid, SIGKILL);
3049: }
3050: #else
3051: KILL(job->pid, SIGINT);
3052: KILL(job->pid, SIGKILL);
3053: #endif /* RMT_WANTS_SIGNALS */
3054: }
3055: }
1.16 christos 3056:
1.1 cgd 3057: /*
3058: * Catch as many children as want to report in at first, then give up
3059: */
1.13 christos 3060: while (waitpid((pid_t) -1, &foo, WNOHANG) > 0)
1.5 cgd 3061: continue;
1.12 christos 3062: (void) eunlink(tfile);
3063: }
3064:
3065: #ifdef REMOTE
3066: /*-
3067: *-----------------------------------------------------------------------
3068: * JobFlagForMigration --
3069: * Handle the eviction of a child. Called from RmtStatusChange.
3070: * Flags the child as remigratable and then suspends it.
3071: *
3072: * Results:
3073: * none.
3074: *
3075: * Side Effects:
3076: * The job descriptor is flagged for remigration.
3077: *
3078: *-----------------------------------------------------------------------
3079: */
3080: void
3081: JobFlagForMigration(hostID)
3082: int hostID; /* ID of host we used, for matching children. */
3083: {
3084: register Job *job; /* job descriptor for dead child */
3085: LstNode jnode; /* list element for finding job */
3086:
3087: if (DEBUG(JOB)) {
3088: (void) fprintf(stdout, "JobFlagForMigration(%d) called.\n", hostID);
3089: (void) fflush(stdout);
3090: }
3091: jnode = Lst_Find(jobs, (ClientData)hostID, JobCmpRmtID);
3092:
3093: if (jnode == NILLNODE) {
3094: jnode = Lst_Find(stoppedJobs, (ClientData)hostID, JobCmpRmtID);
3095: if (jnode == NILLNODE) {
3096: if (DEBUG(JOB)) {
3097: Error("Evicting host(%d) not in table", hostID);
3098: }
3099: return;
3100: }
3101: }
3102: job = (Job *) Lst_Datum(jnode);
3103:
3104: if (DEBUG(JOB)) {
3105: (void) fprintf(stdout,
3106: "JobFlagForMigration(%d) found job '%s'.\n", hostID,
3107: job->node->name);
3108: (void) fflush(stdout);
3109: }
3110:
3111: KILL(job->pid, SIGSTOP);
3112:
3113: job->flags |= JOB_REMIGRATE;
3114: }
3115:
3116: #endif
3117:
3118: /*-
3119: *-----------------------------------------------------------------------
3120: * JobRestartJobs --
3121: * Tries to restart stopped jobs if there are slots available.
3122: * Note that this tries to restart them regardless of pending errors.
3123: * It's not good to leave stopped jobs lying around!
3124: *
3125: * Results:
3126: * None.
3127: *
3128: * Side Effects:
3129: * Resumes(and possibly migrates) jobs.
3130: *
3131: *-----------------------------------------------------------------------
3132: */
3133: static void
3134: JobRestartJobs()
3135: {
3136: while (!jobFull && !Lst_IsEmpty(stoppedJobs)) {
3137: if (DEBUG(JOB)) {
3138: (void) fprintf(stdout,
3139: "Job queue is not full. Restarting a stopped job.\n");
3140: (void) fflush(stdout);
3141: }
3142: JobRestart((Job *)Lst_DeQueue(stoppedJobs));
3143: }
1.1 cgd 3144: }
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