Annotation of src/usr.bin/make/job.c, Revision 1.180
1.180 ! joerg 1: /* $NetBSD: job.c,v 1.179 2015/04/16 11:39:23 joerg Exp $ */
1.10 christos 2:
1.1 cgd 3: /*
4: * Copyright (c) 1988, 1989, 1990 The Regents of the University of California.
1.82 agc 5: * All rights reserved.
6: *
7: * This code is derived from software contributed to Berkeley by
8: * Adam de Boor.
9: *
10: * Redistribution and use in source and binary forms, with or without
11: * modification, are permitted provided that the following conditions
12: * are met:
13: * 1. Redistributions of source code must retain the above copyright
14: * notice, this list of conditions and the following disclaimer.
15: * 2. Redistributions in binary form must reproduce the above copyright
16: * notice, this list of conditions and the following disclaimer in the
17: * documentation and/or other materials provided with the distribution.
18: * 3. Neither the name of the University nor the names of its contributors
19: * may be used to endorse or promote products derived from this software
20: * without specific prior written permission.
21: *
22: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32: * SUCH DAMAGE.
33: */
34:
35: /*
1.1 cgd 36: * Copyright (c) 1988, 1989 by Adam de Boor
37: * Copyright (c) 1989 by Berkeley Softworks
38: * All rights reserved.
39: *
40: * This code is derived from software contributed to Berkeley by
41: * Adam de Boor.
42: *
43: * Redistribution and use in source and binary forms, with or without
44: * modification, are permitted provided that the following conditions
45: * are met:
46: * 1. Redistributions of source code must retain the above copyright
47: * notice, this list of conditions and the following disclaimer.
48: * 2. Redistributions in binary form must reproduce the above copyright
49: * notice, this list of conditions and the following disclaimer in the
50: * documentation and/or other materials provided with the distribution.
51: * 3. All advertising materials mentioning features or use of this software
52: * must display the following acknowledgement:
53: * This product includes software developed by the University of
54: * California, Berkeley and its contributors.
55: * 4. Neither the name of the University nor the names of its contributors
56: * may be used to endorse or promote products derived from this software
57: * without specific prior written permission.
58: *
59: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
60: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
61: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
62: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
63: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
64: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
65: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
66: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
67: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
68: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
69: * SUCH DAMAGE.
70: */
71:
1.84 ross 72: #ifndef MAKE_NATIVE
1.180 ! joerg 73: static char rcsid[] = "$NetBSD: job.c,v 1.179 2015/04/16 11:39:23 joerg Exp $";
1.21 lukem 74: #else
1.19 christos 75: #include <sys/cdefs.h>
1.1 cgd 76: #ifndef lint
1.10 christos 77: #if 0
1.16 christos 78: static char sccsid[] = "@(#)job.c 8.2 (Berkeley) 3/19/94";
1.10 christos 79: #else
1.180 ! joerg 80: __RCSID("$NetBSD: job.c,v 1.179 2015/04/16 11:39:23 joerg Exp $");
1.10 christos 81: #endif
1.1 cgd 82: #endif /* not lint */
1.21 lukem 83: #endif
1.1 cgd 84:
85: /*-
86: * job.c --
87: * handle the creation etc. of our child processes.
88: *
89: * Interface:
90: * Job_Make Start the creation of the given target.
91: *
92: * Job_CatchChildren Check for and handle the termination of any
93: * children. This must be called reasonably
94: * frequently to keep the whole make going at
95: * a decent clip, since job table entries aren't
96: * removed until their process is caught this way.
97: *
98: * Job_CatchOutput Print any output our children have produced.
99: * Should also be called fairly frequently to
100: * keep the user informed of what's going on.
101: * If no output is waiting, it will block for
102: * a time given by the SEL_* constants, below,
103: * or until output is ready.
104: *
105: * Job_Init Called to intialize this module. in addition,
106: * any commands attached to the .BEGIN target
107: * are executed before this function returns.
108: * Hence, the makefile must have been parsed
109: * before this function is called.
110: *
1.22 christos 111: * Job_End Cleanup any memory used.
112: *
1.1 cgd 113: * Job_ParseShell Given the line following a .SHELL target, parse
114: * the line as a shell specification. Returns
115: * FAILURE if the spec was incorrect.
116: *
1.22 christos 117: * Job_Finish Perform any final processing which needs doing.
1.1 cgd 118: * This includes the execution of any commands
119: * which have been/were attached to the .END
120: * target. It should only be called when the
121: * job table is empty.
122: *
123: * Job_AbortAll Abort all currently running jobs. It doesn't
124: * handle output or do anything for the jobs,
125: * just kills them. It should only be called in
126: * an emergency, as it were.
127: *
128: * Job_CheckCommands Verify that the commands for a target are
129: * ok. Provide them if necessary and possible.
130: *
131: * Job_Touch Update a target without really updating it.
132: *
133: * Job_Wait Wait for all currently-running jobs to finish.
134: */
135:
1.5 cgd 136: #include <sys/types.h>
1.1 cgd 137: #include <sys/stat.h>
138: #include <sys/file.h>
139: #include <sys/time.h>
140: #include <sys/wait.h>
1.72 wiz 141:
1.169 christos 142: #include <assert.h>
1.72 wiz 143: #include <errno.h>
1.1 cgd 144: #include <fcntl.h>
1.35 christos 145: #ifndef USE_SELECT
146: #include <poll.h>
147: #endif
1.72 wiz 148: #include <signal.h>
149: #include <stdio.h>
150: #include <string.h>
151: #include <utime.h>
152:
1.5 cgd 153: #include "make.h"
154: #include "hash.h"
155: #include "dir.h"
1.1 cgd 156: #include "job.h"
157: #include "pathnames.h"
1.40 sommerfe 158: #include "trace.h"
1.12 christos 159: # define STATIC static
1.1 cgd 160:
161: /*
1.16 christos 162: * error handling variables
1.1 cgd 163: */
1.5 cgd 164: static int errors = 0; /* number of errors reported */
165: static int aborting = 0; /* why is the make aborting? */
1.1 cgd 166: #define ABORT_ERROR 1 /* Because of an error */
167: #define ABORT_INTERRUPT 2 /* Because it was interrupted */
168: #define ABORT_WAIT 3 /* Waiting for jobs to finish */
1.101 dsl 169: #define JOB_TOKENS "+EI+" /* Token to requeue for each abort state */
1.1 cgd 170:
1.16 christos 171: /*
1.103 dsl 172: * this tracks the number of tokens currently "out" to build jobs.
173: */
174: int jobTokensRunning = 0;
1.139 christos 175: int not_parallel = 0; /* set if .NOT_PARALLEL */
1.103 dsl 176:
177: /*
1.12 christos 178: * XXX: Avoid SunOS bug... FILENO() is fp->_file, and file
179: * is a char! So when we go above 127 we turn negative!
180: */
1.139 christos 181: #define FILENO(a) ((unsigned) fileno(a))
1.1 cgd 182:
183: /*
184: * post-make command processing. The node postCommands is really just the
185: * .END target but we keep it around to avoid having to search for it
186: * all the time.
187: */
1.142 dsl 188: static GNode *postCommands = NULL;
1.71 christos 189: /* node containing commands to execute when
1.1 cgd 190: * everything else is done */
191: static int numCommands; /* The number of commands actually printed
192: * for a target. Should this number be
193: * 0, no shell will be executed. */
194:
195: /*
196: * Return values from JobStart.
197: */
198: #define JOB_RUNNING 0 /* Job is running */
199: #define JOB_ERROR 1 /* Error in starting the job */
200: #define JOB_FINISHED 2 /* The job is already finished */
201:
202: /*
203: * Descriptions for various shells.
1.121 apb 204: *
1.133 apb 205: * The build environment may set DEFSHELL_INDEX to one of
206: * DEFSHELL_INDEX_SH, DEFSHELL_INDEX_KSH, or DEFSHELL_INDEX_CSH, to
207: * select one of the prefedined shells as the default shell.
208: *
209: * Alternatively, the build environment may set DEFSHELL_CUSTOM to the
210: * name or the full path of a sh-compatible shell, which will be used as
211: * the default shell.
212: *
213: * ".SHELL" lines in Makefiles can choose the default shell from the
214: # set defined here, or add additional shells.
215: */
216:
217: #ifdef DEFSHELL_CUSTOM
218: #define DEFSHELL_INDEX_CUSTOM 0
219: #define DEFSHELL_INDEX_SH 1
220: #define DEFSHELL_INDEX_KSH 2
221: #define DEFSHELL_INDEX_CSH 3
222: #else /* !DEFSHELL_CUSTOM */
223: #define DEFSHELL_INDEX_SH 0
224: #define DEFSHELL_INDEX_KSH 1
225: #define DEFSHELL_INDEX_CSH 2
226: #endif /* !DEFSHELL_CUSTOM */
227:
228: #ifndef DEFSHELL_INDEX
229: #define DEFSHELL_INDEX 0 /* DEFSHELL_INDEX_CUSTOM or DEFSHELL_INDEX_SH */
230: #endif /* !DEFSHELL_INDEX */
231:
1.1 cgd 232: static Shell shells[] = {
1.133 apb 233: #ifdef DEFSHELL_CUSTOM
1.1 cgd 234: /*
1.121 apb 235: * An sh-compatible shell with a non-standard name.
236: *
237: * Keep this in sync with the "sh" description below, but avoid
238: * non-portable features that might not be supplied by all
239: * sh-compatible shells.
1.1 cgd 240: */
241: {
1.133 apb 242: DEFSHELL_CUSTOM,
1.121 apb 243: FALSE, "", "", "", 0,
244: FALSE, "echo \"%s\"\n", "%s\n", "{ %s \n} || exit $?\n", "'\n'", '#',
245: "",
246: "",
1.1 cgd 247: },
1.133 apb 248: #endif /* DEFSHELL_CUSTOM */
1.1 cgd 249: /*
250: * SH description. Echo control is also possible and, under
251: * sun UNIX anyway, one can even control error checking.
252: */
253: {
254: "sh",
1.83 jmc 255: FALSE, "", "", "", 0,
1.112 rillig 256: FALSE, "echo \"%s\"\n", "%s\n", "{ %s \n} || exit $?\n", "'\n'", '#',
1.121 apb 257: #if defined(MAKE_NATIVE) && defined(__NetBSD__)
1.83 jmc 258: "q",
1.27 christos 259: #else
1.83 jmc 260: "",
1.27 christos 261: #endif
1.83 jmc 262: "",
1.1 cgd 263: },
264: /*
1.81 sjg 265: * KSH description.
266: */
267: {
268: "ksh",
269: TRUE, "set +v", "set -v", "set +v", 6,
1.112 rillig 270: FALSE, "echo \"%s\"\n", "%s\n", "{ %s \n} || exit $?\n", "'\n'", '#',
1.81 sjg 271: "v",
1.83 jmc 272: "",
1.81 sjg 273: },
274: /*
1.121 apb 275: * CSH description. The csh can do echo control by playing
276: * with the setting of the 'echo' shell variable. Sadly,
277: * however, it is unable to do error control nicely.
278: */
279: {
280: "csh",
281: TRUE, "unset verbose", "set verbose", "unset verbose", 10,
282: FALSE, "echo \"%s\"\n", "csh -c \"%s || exit 0\"\n", "", "'\\\n'", '#',
283: "v", "e",
284: },
285: /*
1.1 cgd 286: * UNKNOWN.
287: */
288: {
1.98 christos 289: NULL,
290: FALSE, NULL, NULL, NULL, 0,
1.112 rillig 291: FALSE, NULL, NULL, NULL, NULL, 0,
1.98 christos 292: NULL, NULL,
1.1 cgd 293: }
294: };
1.133 apb 295: static Shell *commandShell = &shells[DEFSHELL_INDEX]; /* this is the shell to
1.1 cgd 296: * which we pass all
297: * commands in the Makefile.
298: * It is set by the
299: * Job_ParseShell function */
1.81 sjg 300: const char *shellPath = NULL, /* full pathname of
1.1 cgd 301: * executable image */
1.81 sjg 302: *shellName = NULL; /* last component of shell */
1.174 sjg 303: char *shellErrFlag = NULL;
1.81 sjg 304: static const char *shellArgv = NULL; /* Custom shell args */
1.1 cgd 305:
306:
1.114 dsl 307: STATIC Job *job_table; /* The structures that describe them */
308: STATIC Job *job_table_end; /* job_table + maxJobs */
1.120 dsl 309: static int wantToken; /* we want a token */
1.117 dsl 310: static int lurking_children = 0;
1.118 dsl 311: static int make_suspended = 0; /* non-zero if we've seen a SIGTSTP (etc) */
1.40 sommerfe 312:
1.35 christos 313: /*
314: * Set of descriptors of pipes connected to
315: * the output channels of children
316: */
317: static struct pollfd *fds = NULL;
1.36 christos 318: static Job **jobfds = NULL;
1.139 christos 319: static int nfds = 0;
1.72 wiz 320: static void watchfd(Job *);
321: static void clearfd(Job *);
322: static int readyfd(Job *);
1.1 cgd 323:
1.12 christos 324: STATIC GNode *lastNode; /* The node for which output was most recently
1.1 cgd 325: * produced. */
1.158 christos 326: static char *targPrefix = NULL; /* What we print at the start of TARG_FMT */
1.40 sommerfe 327: static Job tokenWaitJob; /* token wait pseudo-job */
1.12 christos 328:
1.73 gson 329: static Job childExitJob; /* child exit pseudo-job */
1.105 dsl 330: #define CHILD_EXIT "."
1.106 dsl 331: #define DO_JOB_RESUME "R"
1.73 gson 332:
1.125 sjg 333: #define TARG_FMT "%s %s ---\n" /* Default format */
1.106 dsl 334: #define MESSAGE(fp, gn) \
1.175 sjg 335: if (maxJobs != 1 && targPrefix && *targPrefix) \
1.158 christos 336: (void)fprintf(fp, TARG_FMT, targPrefix, gn->name)
1.1 cgd 337:
1.104 dsl 338: static sigset_t caught_signals; /* Set of signals we handle */
1.119 dsl 339: #if defined(SYSV)
340: #define KILLPG(pid, sig) kill(-(pid), (sig))
1.5 cgd 341: #else
1.119 dsl 342: #define KILLPG(pid, sig) killpg((pid), (sig))
1.5 cgd 343: #endif
1.1 cgd 344:
1.73 gson 345: static void JobChildSig(int);
1.72 wiz 346: static void JobContinueSig(int);
1.153 sjg 347: static Job *JobFindPid(int, int, Boolean);
1.144 dsl 348: static int JobPrintCommand(void *, void *);
349: static int JobSaveCommand(void *, void *);
1.72 wiz 350: static void JobClose(Job *);
351: static void JobExec(Job *, char **);
352: static void JobMakeArgv(Job *, char **);
1.108 dsl 353: static int JobStart(GNode *, int);
1.72 wiz 354: static char *JobOutput(Job *, char *, char *, int);
355: static void JobDoOutput(Job *, Boolean);
1.77 christos 356: static Shell *JobMatchShell(const char *);
1.162 joerg 357: static void JobInterrupt(int, int) MAKE_ATTR_DEAD;
1.72 wiz 358: static void JobRestartJobs(void);
359: static void JobTokenAdd(void);
1.69 pk 360: static void JobSigLock(sigset_t *);
361: static void JobSigUnlock(sigset_t *);
362: static void JobSigReset(void);
363:
1.139 christos 364: const char *malloc_options="A";
1.69 pk 365:
1.114 dsl 366: static void
367: job_table_dump(const char *where)
368: {
369: Job *job;
370:
1.139 christos 371: fprintf(debug_file, "job table @ %s\n", where);
1.114 dsl 372: for (job = job_table; job < job_table_end; job++) {
1.139 christos 373: fprintf(debug_file, "job %d, status %d, flags %d, pid %d\n",
374: (int)(job - job_table), job->job_state, job->flags, job->pid);
1.114 dsl 375: }
376: }
1.69 pk 377:
378: /*
379: * JobSigLock/JobSigUnlock
380: *
381: * Signal lock routines to get exclusive access. Currently used to
382: * protect `jobs' and `stoppedJobs' list manipulations.
383: */
1.72 wiz 384: static void JobSigLock(sigset_t *omaskp)
1.69 pk 385: {
386: if (sigprocmask(SIG_BLOCK, &caught_signals, omaskp) != 0) {
387: Punt("JobSigLock: sigprocmask: %s", strerror(errno));
1.104 dsl 388: sigemptyset(omaskp);
1.69 pk 389: }
390: }
391:
1.72 wiz 392: static void JobSigUnlock(sigset_t *omaskp)
1.69 pk 393: {
1.96 christos 394: (void)sigprocmask(SIG_SETMASK, omaskp, NULL);
1.69 pk 395: }
1.1 cgd 396:
1.122 dsl 397: static void
398: JobCreatePipe(Job *job, int minfd)
399: {
400: int i, fd;
401:
402: if (pipe(job->jobPipe) == -1)
403: Punt("Cannot create pipe: %s", strerror(errno));
404:
1.173 sjg 405: for (i = 0; i < 2; i++) {
406: /* Avoid using low numbered fds */
407: fd = fcntl(job->jobPipe[i], F_DUPFD, minfd);
408: if (fd != -1) {
409: close(job->jobPipe[i]);
410: job->jobPipe[i] = fd;
411: }
412: }
413:
1.122 dsl 414: /* Set close-on-exec flag for both */
415: (void)fcntl(job->jobPipe[0], F_SETFD, 1);
416: (void)fcntl(job->jobPipe[1], F_SETFD, 1);
417:
418: /*
419: * We mark the input side of the pipe non-blocking; we poll(2) the
420: * pipe when we're waiting for a job token, but we might lose the
421: * race for the token when a new one becomes available, so the read
422: * from the pipe should not block.
423: */
424: fcntl(job->jobPipe[0], F_SETFL,
425: fcntl(job->jobPipe[0], F_GETFL, 0) | O_NONBLOCK);
426: }
427:
1.1 cgd 428: /*-
429: *-----------------------------------------------------------------------
430: * JobCondPassSig --
1.119 dsl 431: * Pass a signal to a job
1.1 cgd 432: *
1.72 wiz 433: * Input:
434: * signop Signal to send it
435: *
1.1 cgd 436: * Side Effects:
437: * None, except the job may bite it.
438: *
439: *-----------------------------------------------------------------------
440: */
1.114 dsl 441: static void
442: JobCondPassSig(int signo)
1.1 cgd 443: {
1.114 dsl 444: Job *job;
1.106 dsl 445:
1.116 dsl 446: if (DEBUG(JOB)) {
1.123 dsl 447: (void)fprintf(debug_file, "JobCondPassSig(%d) called.\n", signo);
1.116 dsl 448: }
449:
1.114 dsl 450: for (job = job_table; job < job_table_end; job++) {
1.116 dsl 451: if (job->job_state != JOB_ST_RUNNING)
1.114 dsl 452: continue;
453: if (DEBUG(JOB)) {
1.123 dsl 454: (void)fprintf(debug_file,
1.139 christos 455: "JobCondPassSig passing signal %d to child %d.\n",
456: signo, job->pid);
1.114 dsl 457: }
1.116 dsl 458: KILLPG(job->pid, signo);
1.12 christos 459: }
1.1 cgd 460: }
461:
462: /*-
463: *-----------------------------------------------------------------------
1.73 gson 464: * JobChldSig --
465: * SIGCHLD handler.
1.37 sommerfe 466: *
1.72 wiz 467: * Input:
468: * signo The signal number we've received
469: *
1.37 sommerfe 470: * Results:
471: * None.
472: *
473: * Side Effects:
1.73 gson 474: * Sends a token on the child exit pipe to wake us up from
475: * select()/poll().
1.37 sommerfe 476: *
477: *-----------------------------------------------------------------------
478: */
479: static void
1.162 joerg 480: JobChildSig(int signo MAKE_ATTR_UNUSED)
1.37 sommerfe 481: {
1.165 christos 482: while (write(childExitJob.outPipe, CHILD_EXIT, 1) == -1 && errno == EAGAIN)
483: continue;
1.37 sommerfe 484: }
485:
486:
1.47 sommerfe 487: /*-
488: *-----------------------------------------------------------------------
489: * JobContinueSig --
490: * Resume all stopped jobs.
491: *
1.72 wiz 492: * Input:
493: * signo The signal number we've received
494: *
1.47 sommerfe 495: * Results:
496: * None.
497: *
498: * Side Effects:
499: * Jobs start running again.
500: *
501: *-----------------------------------------------------------------------
502: */
503: static void
1.162 joerg 504: JobContinueSig(int signo MAKE_ATTR_UNUSED)
1.47 sommerfe 505: {
1.116 dsl 506: /*
1.118 dsl 507: * Defer sending to SIGCONT to our stopped children until we return
1.116 dsl 508: * from the signal handler.
509: */
1.165 christos 510: while (write(childExitJob.outPipe, DO_JOB_RESUME, 1) == -1 &&
511: errno == EAGAIN)
512: continue;
1.47 sommerfe 513: }
1.37 sommerfe 514:
515: /*-
516: *-----------------------------------------------------------------------
1.1 cgd 517: * JobPassSig --
1.119 dsl 518: * Pass a signal on to all jobs, then resend to ourselves.
1.1 cgd 519: *
1.72 wiz 520: * Input:
521: * signo The signal number we've received
522: *
1.1 cgd 523: * Results:
524: * None.
525: *
526: * Side Effects:
527: * We die by the same signal.
1.16 christos 528: *
1.1 cgd 529: *-----------------------------------------------------------------------
530: */
1.162 joerg 531: MAKE_ATTR_DEAD static void
1.116 dsl 532: JobPassSig_int(int signo)
533: {
534: /* Run .INTERRUPT target then exit */
535: JobInterrupt(TRUE, signo);
536: }
537:
1.162 joerg 538: MAKE_ATTR_DEAD static void
1.116 dsl 539: JobPassSig_term(int signo)
540: {
541: /* Dont run .INTERRUPT target then exit */
542: JobInterrupt(FALSE, signo);
543: }
544:
545: static void
546: JobPassSig_suspend(int signo)
1.1 cgd 547: {
1.13 christos 548: sigset_t nmask, omask;
1.14 christos 549: struct sigaction act;
1.118 dsl 550:
551: /* Suppress job started/continued messages */
552: make_suspended = 1;
1.16 christos 553:
1.116 dsl 554: /* Pass the signal onto every job */
1.114 dsl 555: JobCondPassSig(signo);
1.1 cgd 556:
557: /*
558: * Send ourselves the signal now we've given the message to everyone else.
559: * Note we block everything else possible while we're getting the signal.
560: * This ensures that all our jobs get continued when we wake up before
561: * we take any other signal.
562: */
1.28 christos 563: sigfillset(&nmask);
1.68 pk 564: sigdelset(&nmask, signo);
1.96 christos 565: (void)sigprocmask(SIG_SETMASK, &nmask, &omask);
1.68 pk 566:
1.14 christos 567: act.sa_handler = SIG_DFL;
568: sigemptyset(&act.sa_mask);
569: act.sa_flags = 0;
1.96 christos 570: (void)sigaction(signo, &act, NULL);
1.13 christos 571:
1.12 christos 572: if (DEBUG(JOB)) {
1.123 dsl 573: (void)fprintf(debug_file,
1.47 sommerfe 574: "JobPassSig passing signal %d to self.\n", signo);
1.12 christos 575: }
1.1 cgd 576:
1.96 christos 577: (void)kill(getpid(), signo);
1.115 dsl 578:
579: /*
1.116 dsl 580: * We've been continued.
581: *
582: * A whole host of signals continue to happen!
1.118 dsl 583: * SIGCHLD for any processes that actually suspended themselves.
1.116 dsl 584: * SIGCHLD for any processes that exited while we were alseep.
585: * The SIGCONT that actually caused us to wakeup.
586: *
587: * Since we defer passing the SIGCONT on to our children until
588: * the main processing loop, we can be sure that all the SIGCHLD
589: * events will have happened by then - and that the waitpid() will
590: * collect the child 'suspended' events.
591: * For correct sequencing we just need to ensure we process the
592: * waitpid() before passign on the SIGCONT.
593: *
594: * In any case nothing else is needed here.
1.115 dsl 595: */
1.1 cgd 596:
1.68 pk 597: /* Restore handler and signal mask */
1.116 dsl 598: act.sa_handler = JobPassSig_suspend;
1.96 christos 599: (void)sigaction(signo, &act, NULL);
600: (void)sigprocmask(SIG_SETMASK, &omask, NULL);
1.1 cgd 601: }
602:
603: /*-
604: *-----------------------------------------------------------------------
1.116 dsl 605: * JobFindPid --
1.1 cgd 606: * Compare the pid of the job with the given pid and return 0 if they
1.120 dsl 607: * are equal. This function is called from Job_CatchChildren
608: * to find the job descriptor of the finished job.
1.1 cgd 609: *
1.72 wiz 610: * Input:
611: * job job to examine
612: * pid process id desired
613: *
1.1 cgd 614: * Results:
1.114 dsl 615: * Job with matching pid
1.1 cgd 616: *
617: * Side Effects:
618: * None
619: *-----------------------------------------------------------------------
620: */
1.114 dsl 621: static Job *
1.153 sjg 622: JobFindPid(int pid, int status, Boolean isJobs)
1.1 cgd 623: {
1.114 dsl 624: Job *job;
625:
626: for (job = job_table; job < job_table_end; job++) {
1.116 dsl 627: if ((job->job_state == status) && job->pid == pid)
1.114 dsl 628: return job;
629: }
1.153 sjg 630: if (DEBUG(JOB) && isJobs)
1.114 dsl 631: job_table_dump("no pid");
632: return NULL;
1.12 christos 633: }
634:
1.1 cgd 635: /*-
636: *-----------------------------------------------------------------------
637: * JobPrintCommand --
638: * Put out another command for the given job. If the command starts
639: * with an @ or a - we process it specially. In the former case,
640: * so long as the -s and -n flags weren't given to make, we stick
641: * a shell-specific echoOff command in the script. In the latter,
642: * we ignore errors for the entire job, unless the shell has error
643: * control.
644: * If the command is just "..." we take all future commands for this
645: * job to be commands to be executed once the entire graph has been
646: * made and return non-zero to signal that the end of the commands
647: * was reached. These commands are later attached to the postCommands
648: * node and executed by Job_End when all things are done.
649: * This function is called from JobStart via Lst_ForEach.
650: *
1.72 wiz 651: * Input:
652: * cmdp command string to print
653: * jobp job for which to print it
654: *
1.1 cgd 655: * Results:
656: * Always 0, unless the command was "..."
657: *
658: * Side Effects:
659: * If the command begins with a '-' and the shell has no error control,
660: * the JOB_IGNERR flag is set in the job descriptor.
661: * If the command is "..." and we're not ignoring such things,
662: * tailCmds is set to the successor node of the cmd.
663: * numCommands is incremented if the command is actually printed.
664: *-----------------------------------------------------------------------
665: */
666: static int
1.144 dsl 667: JobPrintCommand(void *cmdp, void *jobp)
1.1 cgd 668: {
669: Boolean noSpecials; /* true if we shouldn't worry about
670: * inserting special commands into
671: * the input stream. */
672: Boolean shutUp = FALSE; /* true if we put a no echo command
673: * into the command file */
674: Boolean errOff = FALSE; /* true if we turned error checking
675: * off before printing the command
676: * and need to turn it back on */
1.77 christos 677: const char *cmdTemplate; /* Template to use when printing the
1.1 cgd 678: * command */
679: char *cmdStart; /* Start of expanded command */
1.83 jmc 680: char *escCmd = NULL; /* Command with quotes/backticks escaped */
1.98 christos 681: char *cmd = (char *)cmdp;
682: Job *job = (Job *)jobp;
1.83 jmc 683: int i, j;
684:
1.45 sommerfe 685: noSpecials = NoExecute(job->node);
1.1 cgd 686:
1.12 christos 687: if (strcmp(cmd, "...") == 0) {
1.16 christos 688: job->node->type |= OP_SAVE_CMDS;
1.1 cgd 689: if ((job->flags & JOB_IGNDOTS) == 0) {
1.12 christos 690: job->tailCmds = Lst_Succ(Lst_Member(job->node->commands,
1.124 dsl 691: cmd));
1.16 christos 692: return 1;
1.12 christos 693: }
1.16 christos 694: return 0;
1.1 cgd 695: }
696:
1.12 christos 697: #define DBPRINTF(fmt, arg) if (DEBUG(JOB)) { \
1.123 dsl 698: (void)fprintf(debug_file, fmt, arg); \
1.12 christos 699: } \
1.96 christos 700: (void)fprintf(job->cmdFILE, fmt, arg); \
701: (void)fflush(job->cmdFILE);
1.1 cgd 702:
703: numCommands += 1;
704:
1.12 christos 705: cmdStart = cmd = Var_Subst(NULL, cmd, job->node, FALSE);
1.1 cgd 706:
707: cmdTemplate = "%s\n";
708:
709: /*
710: * Check for leading @' and -'s to control echoing and error checking.
711: */
1.85 sjg 712: while (*cmd == '@' || *cmd == '-' || (*cmd == '+')) {
713: switch (*cmd) {
714: case '@':
1.135 sjg 715: shutUp = DEBUG(LOUD) ? FALSE : TRUE;
1.85 sjg 716: break;
717: case '-':
1.1 cgd 718: errOff = TRUE;
1.85 sjg 719: break;
720: case '+':
721: if (noSpecials) {
722: /*
723: * We're not actually executing anything...
724: * but this one needs to be - use compat mode just for it.
725: */
1.124 dsl 726: CompatRunCommand(cmdp, job->node);
1.85 sjg 727: return 0;
728: }
729: break;
1.1 cgd 730: }
731: cmd++;
732: }
733:
1.5 cgd 734: while (isspace((unsigned char) *cmd))
735: cmd++;
1.1 cgd 736:
1.83 jmc 737: /*
738: * If the shell doesn't have error control the alternate echo'ing will
739: * be done (to avoid showing additional error checking code)
740: * and this will need the characters '$ ` \ "' escaped
741: */
742:
743: if (!commandShell->hasErrCtl) {
744: /* Worst that could happen is every char needs escaping. */
1.140 joerg 745: escCmd = bmake_malloc((strlen(cmd) * 2) + 1);
1.83 jmc 746: for (i = 0, j= 0; cmd[i] != '\0'; i++, j++) {
747: if (cmd[i] == '$' || cmd[i] == '`' || cmd[i] == '\\' ||
748: cmd[i] == '"')
749: escCmd[j++] = '\\';
750: escCmd[j] = cmd[i];
751: }
752: escCmd[j] = 0;
753: }
754:
1.1 cgd 755: if (shutUp) {
1.12 christos 756: if (!(job->flags & JOB_SILENT) && !noSpecials &&
1.1 cgd 757: commandShell->hasEchoCtl) {
1.12 christos 758: DBPRINTF("%s\n", commandShell->echoOff);
1.1 cgd 759: } else {
1.83 jmc 760: if (commandShell->hasErrCtl)
761: shutUp = FALSE;
1.1 cgd 762: }
763: }
764:
765: if (errOff) {
1.152 christos 766: if (!noSpecials) {
1.1 cgd 767: if (commandShell->hasErrCtl) {
768: /*
769: * we don't want the error-control commands showing
770: * up either, so we turn off echoing while executing
771: * them. We could put another field in the shell
772: * structure to tell JobDoOutput to look for this
773: * string too, but why make it any more complex than
774: * it already is?
775: */
1.12 christos 776: if (!(job->flags & JOB_SILENT) && !shutUp &&
1.1 cgd 777: commandShell->hasEchoCtl) {
1.12 christos 778: DBPRINTF("%s\n", commandShell->echoOff);
779: DBPRINTF("%s\n", commandShell->ignErr);
780: DBPRINTF("%s\n", commandShell->echoOn);
1.1 cgd 781: } else {
1.83 jmc 782: DBPRINTF("%s\n", commandShell->ignErr);
1.1 cgd 783: }
784: } else if (commandShell->ignErr &&
1.12 christos 785: (*commandShell->ignErr != '\0'))
1.1 cgd 786: {
787: /*
788: * The shell has no error control, so we need to be
789: * weird to get it to ignore any errors from the command.
790: * If echoing is turned on, we turn it off and use the
791: * errCheck template to echo the command. Leave echoing
792: * off so the user doesn't see the weirdness we go through
793: * to ignore errors. Set cmdTemplate to use the weirdness
794: * instead of the simple "%s\n" template.
795: */
1.178 sjg 796: job->flags |= JOB_IGNERR;
1.83 jmc 797: if (!(job->flags & JOB_SILENT) && !shutUp) {
798: if (commandShell->hasEchoCtl) {
799: DBPRINTF("%s\n", commandShell->echoOff);
800: }
801: DBPRINTF(commandShell->errCheck, escCmd);
1.1 cgd 802: shutUp = TRUE;
1.83 jmc 803: } else {
804: if (!shutUp) {
805: DBPRINTF(commandShell->errCheck, escCmd);
806: }
1.1 cgd 807: }
808: cmdTemplate = commandShell->ignErr;
809: /*
1.16 christos 810: * The error ignoration (hee hee) is already taken care
1.1 cgd 811: * of by the ignErr template, so pretend error checking
812: * is still on.
813: */
814: errOff = FALSE;
815: } else {
816: errOff = FALSE;
817: }
818: } else {
819: errOff = FALSE;
820: }
1.83 jmc 821: } else {
822:
823: /*
824: * If errors are being checked and the shell doesn't have error control
825: * but does supply an errOut template, then setup commands to run
826: * through it.
827: */
828:
829: if (!commandShell->hasErrCtl && commandShell->errOut &&
830: (*commandShell->errOut != '\0')) {
831: if (!(job->flags & JOB_SILENT) && !shutUp) {
832: if (commandShell->hasEchoCtl) {
833: DBPRINTF("%s\n", commandShell->echoOff);
834: }
835: DBPRINTF(commandShell->errCheck, escCmd);
836: shutUp = TRUE;
837: }
1.93 jmc 838: /* If it's a comment line or blank, treat as an ignored error */
839: if ((escCmd[0] == commandShell->commentChar) ||
840: (escCmd[0] == 0))
1.83 jmc 841: cmdTemplate = commandShell->ignErr;
842: else
843: cmdTemplate = commandShell->errOut;
844: errOff = FALSE;
845: }
1.1 cgd 846: }
1.16 christos 847:
1.49 sjg 848: if (DEBUG(SHELL) && strcmp(shellName, "sh") == 0 &&
849: (job->flags & JOB_TRACED) == 0) {
850: DBPRINTF("set -%s\n", "x");
851: job->flags |= JOB_TRACED;
852: }
853:
1.12 christos 854: DBPRINTF(cmdTemplate, cmd);
1.23 itohy 855: free(cmdStart);
1.83 jmc 856: if (escCmd)
857: free(escCmd);
1.1 cgd 858: if (errOff) {
859: /*
860: * If echoing is already off, there's no point in issuing the
861: * echoOff command. Otherwise we issue it and pretend it was on
862: * for the whole command...
863: */
864: if (!shutUp && !(job->flags & JOB_SILENT) && commandShell->hasEchoCtl){
1.12 christos 865: DBPRINTF("%s\n", commandShell->echoOff);
1.1 cgd 866: shutUp = TRUE;
867: }
1.12 christos 868: DBPRINTF("%s\n", commandShell->errCheck);
1.1 cgd 869: }
1.83 jmc 870: if (shutUp && commandShell->hasEchoCtl) {
1.12 christos 871: DBPRINTF("%s\n", commandShell->echoOn);
1.1 cgd 872: }
1.12 christos 873: return 0;
1.1 cgd 874: }
875:
876: /*-
877: *-----------------------------------------------------------------------
878: * JobSaveCommand --
879: * Save a command to be executed when everything else is done.
880: * Callback function for JobFinish...
881: *
882: * Results:
883: * Always returns 0
884: *
885: * Side Effects:
886: * The command is tacked onto the end of postCommands's commands list.
887: *
888: *-----------------------------------------------------------------------
889: */
890: static int
1.144 dsl 891: JobSaveCommand(void *cmd, void *gn)
1.1 cgd 892: {
1.124 dsl 893: cmd = Var_Subst(NULL, (char *)cmd, (GNode *)gn, FALSE);
1.96 christos 894: (void)Lst_AtEnd(postCommands->commands, cmd);
1.12 christos 895: return(0);
896: }
897:
898:
899: /*-
900: *-----------------------------------------------------------------------
901: * JobClose --
902: * Called to close both input and output pipes when a job is finished.
903: *
904: * Results:
905: * Nada
906: *
907: * Side Effects:
908: * The file descriptors associated with the job are closed.
909: *
910: *-----------------------------------------------------------------------
911: */
912: static void
1.72 wiz 913: JobClose(Job *job)
1.12 christos 914: {
1.120 dsl 915: clearfd(job);
1.122 dsl 916: (void)close(job->outPipe);
917: job->outPipe = -1;
918:
1.120 dsl 919: JobDoOutput(job, TRUE);
920: (void)close(job->inPipe);
921: job->inPipe = -1;
1.1 cgd 922: }
923:
924: /*-
925: *-----------------------------------------------------------------------
926: * JobFinish --
927: * Do final processing for the given job including updating
928: * parents and starting new jobs as available/necessary. Note
929: * that we pay no attention to the JOB_IGNERR flag here.
930: * This is because when we're called because of a noexecute flag
931: * or something, jstat.w_status is 0 and when called from
932: * Job_CatchChildren, the status is zeroed if it s/b ignored.
933: *
1.72 wiz 934: * Input:
935: * job job to finish
936: * status sub-why job went away
937: *
1.1 cgd 938: * Results:
939: * None
940: *
941: * Side Effects:
942: * Final commands for the job are placed on postCommands.
943: *
1.16 christos 944: * If we got an error and are aborting (aborting == ABORT_ERROR) and
1.1 cgd 945: * the job list is now empty, we are done for the day.
1.16 christos 946: * If we recognized an error (errors !=0), we set the aborting flag
1.1 cgd 947: * to ABORT_ERROR so no more jobs will be started.
948: *-----------------------------------------------------------------------
949: */
950: /*ARGSUSED*/
1.5 cgd 951: static void
1.116 dsl 952: JobFinish(Job *job, int status)
1.1 cgd 953: {
1.102 dsl 954: Boolean done, return_job_token;
1.1 cgd 955:
1.116 dsl 956: if (DEBUG(JOB)) {
1.139 christos 957: fprintf(debug_file, "Jobfinish: %d [%s], status %d\n",
958: job->pid, job->node->name, status);
1.116 dsl 959: }
960:
961: if ((WIFEXITED(status) &&
962: (((WEXITSTATUS(status) != 0) && !(job->flags & JOB_IGNERR)))) ||
963: WIFSIGNALED(status))
1.1 cgd 964: {
965: /*
966: * If it exited non-zero and either we're doing things our
967: * way or we're not ignoring errors, the job is finished.
968: * Similarly, if the shell died because of a signal
969: * the job is also finished. In these
970: * cases, finish out the job's output before printing the exit
971: * status...
972: */
1.12 christos 973: JobClose(job);
1.1 cgd 974: if (job->cmdFILE != NULL && job->cmdFILE != stdout) {
1.96 christos 975: (void)fclose(job->cmdFILE);
1.34 christos 976: job->cmdFILE = NULL;
1.1 cgd 977: }
978: done = TRUE;
1.116 dsl 979: } else if (WIFEXITED(status)) {
1.1 cgd 980: /*
981: * Deal with ignored errors in -B mode. We need to print a message
982: * telling of the ignored error as well as setting status.w_status
983: * to 0 so the next command gets run. To do this, we set done to be
1.12 christos 984: * TRUE if in -B mode and the job exited non-zero.
985: */
1.116 dsl 986: done = WEXITSTATUS(status) != 0;
1.16 christos 987: /*
1.12 christos 988: * Old comment said: "Note we don't
1.1 cgd 989: * want to close down any of the streams until we know we're at the
1.12 christos 990: * end."
991: * But we do. Otherwise when are we going to print the rest of the
992: * stuff?
993: */
994: JobClose(job);
1.1 cgd 995: } else {
996: /*
997: * No need to close things down or anything.
998: */
999: done = FALSE;
1000: }
1.16 christos 1001:
1.116 dsl 1002: if (done) {
1003: if (WIFEXITED(status)) {
1.12 christos 1004: if (DEBUG(JOB)) {
1.139 christos 1005: (void)fprintf(debug_file, "Process %d [%s] exited.\n",
1006: job->pid, job->node->name);
1.12 christos 1007: }
1.116 dsl 1008: if (WEXITSTATUS(status) != 0) {
1.120 dsl 1009: if (job->node != lastNode) {
1.107 dsl 1010: MESSAGE(stdout, job->node);
1.1 cgd 1011: lastNode = job->node;
1012: }
1.155 sjg 1013: #ifdef USE_META
1014: if (useMeta) {
1015: meta_job_error(job, job->node, job->flags, WEXITSTATUS(status));
1016: }
1017: #endif
1.107 dsl 1018: (void)printf("*** [%s] Error code %d%s\n",
1.61 pk 1019: job->node->name,
1.116 dsl 1020: WEXITSTATUS(status),
1.152 christos 1021: (job->flags & JOB_IGNERR) ? " (ignored)" : "");
1.151 sjg 1022: if (job->flags & JOB_IGNERR) {
1.116 dsl 1023: status = 0;
1.151 sjg 1024: } else {
1025: PrintOnError(job->node, NULL);
1026: }
1.1 cgd 1027: } else if (DEBUG(JOB)) {
1.120 dsl 1028: if (job->node != lastNode) {
1.107 dsl 1029: MESSAGE(stdout, job->node);
1.1 cgd 1030: lastNode = job->node;
1031: }
1.107 dsl 1032: (void)printf("*** [%s] Completed successfully\n",
1.61 pk 1033: job->node->name);
1.12 christos 1034: }
1.1 cgd 1035: } else {
1.120 dsl 1036: if (job->node != lastNode) {
1.107 dsl 1037: MESSAGE(stdout, job->node);
1.1 cgd 1038: lastNode = job->node;
1039: }
1.107 dsl 1040: (void)printf("*** [%s] Signal %d\n",
1.116 dsl 1041: job->node->name, WTERMSIG(status));
1.1 cgd 1042: }
1.107 dsl 1043: (void)fflush(stdout);
1.1 cgd 1044: }
1.16 christos 1045:
1.156 sjg 1046: #ifdef USE_META
1047: if (useMeta) {
1048: meta_job_finish(job);
1049: }
1050: #endif
1051:
1.102 dsl 1052: return_job_token = FALSE;
1053:
1.107 dsl 1054: Trace_Log(JOBEND, job);
1055: if (!(job->flags & JOB_SPECIAL)) {
1.116 dsl 1056: if ((status != 0) ||
1.107 dsl 1057: (aborting == ABORT_ERROR) ||
1058: (aborting == ABORT_INTERRUPT))
1059: return_job_token = TRUE;
1.42 sommerfe 1060: }
1.1 cgd 1061:
1.116 dsl 1062: if ((aborting != ABORT_ERROR) && (aborting != ABORT_INTERRUPT) && (status == 0)) {
1.1 cgd 1063: /*
1064: * As long as we aren't aborting and the job didn't return a non-zero
1065: * status that we shouldn't ignore, we call Make_Update to update
1066: * the parents. In addition, any saved commands for the node are placed
1067: * on the .END target.
1068: */
1.142 dsl 1069: if (job->tailCmds != NULL) {
1.12 christos 1070: Lst_ForEachFrom(job->node->commands, job->tailCmds,
1.1 cgd 1071: JobSaveCommand,
1.124 dsl 1072: job->node);
1.1 cgd 1073: }
1074: job->node->made = MADE;
1.43 sommerfe 1075: if (!(job->flags & JOB_SPECIAL))
1.102 dsl 1076: return_job_token = TRUE;
1.12 christos 1077: Make_Update(job->node);
1.116 dsl 1078: job->job_state = JOB_ST_FREE;
1079: } else if (status != 0) {
1.1 cgd 1080: errors += 1;
1.116 dsl 1081: job->job_state = JOB_ST_FREE;
1.1 cgd 1082: }
1083:
1084: /*
1085: * Set aborting if any error.
1086: */
1087: if (errors && !keepgoing && (aborting != ABORT_INTERRUPT)) {
1088: /*
1089: * If we found any errors in this batch of children and the -k flag
1090: * wasn't given, we set the aborting flag so no more jobs get
1091: * started.
1092: */
1093: aborting = ABORT_ERROR;
1094: }
1.16 christos 1095:
1.102 dsl 1096: if (return_job_token)
1097: Job_TokenReturn();
1098:
1.111 dsl 1099: if (aborting == ABORT_ERROR && jobTokensRunning == 0) {
1.1 cgd 1100: /*
1101: * If we are aborting and the job table is now empty, we finish.
1102: */
1.12 christos 1103: Finish(errors);
1.1 cgd 1104: }
1105: }
1106:
1107: /*-
1108: *-----------------------------------------------------------------------
1109: * Job_Touch --
1110: * Touch the given target. Called by JobStart when the -t flag was
1111: * given
1112: *
1.72 wiz 1113: * Input:
1114: * gn the node of the file to touch
1115: * silent TRUE if should not print message
1116: *
1.1 cgd 1117: * Results:
1118: * None
1119: *
1120: * Side Effects:
1121: * The data modification of the file is changed. In addition, if the
1122: * file did not exist, it is created.
1123: *-----------------------------------------------------------------------
1124: */
1125: void
1.72 wiz 1126: Job_Touch(GNode *gn, Boolean silent)
1.1 cgd 1127: {
1128: int streamID; /* ID of stream opened to do the touch */
1.14 christos 1129: struct utimbuf times; /* Times for utime() call */
1.1 cgd 1130:
1.157 christos 1131: if (gn->type & (OP_JOIN|OP_USE|OP_USEBEFORE|OP_EXEC|OP_OPTIONAL|
1132: OP_SPECIAL|OP_PHONY)) {
1.1 cgd 1133: /*
1134: * .JOIN, .USE, .ZEROTIME and .OPTIONAL targets are "virtual" targets
1135: * and, as such, shouldn't really be created.
1136: */
1137: return;
1138: }
1.16 christos 1139:
1.45 sommerfe 1140: if (!silent || NoExecute(gn)) {
1.96 christos 1141: (void)fprintf(stdout, "touch %s\n", gn->name);
1142: (void)fflush(stdout);
1.1 cgd 1143: }
1144:
1.45 sommerfe 1145: if (NoExecute(gn)) {
1.1 cgd 1146: return;
1147: }
1148:
1149: if (gn->type & OP_ARCHV) {
1.12 christos 1150: Arch_Touch(gn);
1.1 cgd 1151: } else if (gn->type & OP_LIB) {
1.12 christos 1152: Arch_TouchLib(gn);
1.1 cgd 1153: } else {
1154: char *file = gn->path ? gn->path : gn->name;
1155:
1.14 christos 1156: times.actime = times.modtime = now;
1157: if (utime(file, ×) < 0){
1.12 christos 1158: streamID = open(file, O_RDWR | O_CREAT, 0666);
1.1 cgd 1159:
1160: if (streamID >= 0) {
1161: char c;
1162:
1163: /*
1164: * Read and write a byte to the file to change the
1165: * modification time, then close the file.
1166: */
1167: if (read(streamID, &c, 1) == 1) {
1.96 christos 1168: (void)lseek(streamID, (off_t)0, SEEK_SET);
1.165 christos 1169: while (write(streamID, &c, 1) == -1 && errno == EAGAIN)
1170: continue;
1.1 cgd 1171: }
1.16 christos 1172:
1.96 christos 1173: (void)close(streamID);
1.12 christos 1174: } else {
1.96 christos 1175: (void)fprintf(stdout, "*** couldn't touch %s: %s",
1.12 christos 1176: file, strerror(errno));
1.96 christos 1177: (void)fflush(stdout);
1.12 christos 1178: }
1.1 cgd 1179: }
1180: }
1181: }
1182:
1183: /*-
1184: *-----------------------------------------------------------------------
1185: * Job_CheckCommands --
1.16 christos 1186: * Make sure the given node has all the commands it needs.
1.1 cgd 1187: *
1.72 wiz 1188: * Input:
1189: * gn The target whose commands need verifying
1190: * abortProc Function to abort with message
1191: *
1.1 cgd 1192: * Results:
1193: * TRUE if the commands list is/was ok.
1194: *
1195: * Side Effects:
1196: * The node will have commands from the .DEFAULT rule added to it
1197: * if it needs them.
1198: *-----------------------------------------------------------------------
1199: */
1200: Boolean
1.77 christos 1201: Job_CheckCommands(GNode *gn, void (*abortProc)(const char *, ...))
1.1 cgd 1202: {
1.12 christos 1203: if (OP_NOP(gn->type) && Lst_IsEmpty(gn->commands) &&
1.76 christos 1204: ((gn->type & OP_LIB) == 0 || Lst_IsEmpty(gn->children))) {
1.1 cgd 1205: /*
1206: * No commands. Look for .DEFAULT rule from which we might infer
1.16 christos 1207: * commands
1.1 cgd 1208: */
1.142 dsl 1209: if ((DEFAULT != NULL) && !Lst_IsEmpty(DEFAULT->commands) &&
1.110 dsl 1210: (gn->type & OP_SPECIAL) == 0) {
1.6 jtc 1211: char *p1;
1.1 cgd 1212: /*
1213: * Make only looks for a .DEFAULT if the node was never the
1214: * target of an operator, so that's what we do too. If
1215: * a .DEFAULT was given, we substitute its commands for gn's
1216: * commands and set the IMPSRC variable to be the target's name
1217: * The DEFAULT node acts like a transformation rule, in that
1218: * gn also inherits any attributes or sources attached to
1219: * .DEFAULT itself.
1220: */
1221: Make_HandleUse(DEFAULT, gn);
1.51 sjg 1222: Var_Set(IMPSRC, Var_Value(TARGET, gn, &p1), gn, 0);
1.6 jtc 1223: if (p1)
1224: free(p1);
1.161 christos 1225: } else if (Dir_MTime(gn, 0) == 0 && (gn->type & OP_SPECIAL) == 0) {
1.1 cgd 1226: /*
1227: * The node wasn't the target of an operator we have no .DEFAULT
1228: * rule to go on and the target doesn't already exist. There's
1229: * nothing more we can do for this branch. If the -k flag wasn't
1230: * given, we stop in our tracks, otherwise we just don't update
1.16 christos 1231: * this node's parents so they never get examined.
1.1 cgd 1232: */
1.46 christos 1233: static const char msg[] = ": don't know how to make";
1.12 christos 1234:
1.134 dsl 1235: if (gn->flags & FROM_DEPEND) {
1.172 christos 1236: if (!Job_RunTarget(".STALE", gn->fname))
1237: fprintf(stdout, "%s: %s, %d: ignoring stale %s for %s\n",
1238: progname, gn->fname, gn->lineno, makeDependfile,
1239: gn->name);
1.134 dsl 1240: return TRUE;
1241: }
1242:
1.1 cgd 1243: if (gn->type & OP_OPTIONAL) {
1.152 christos 1244: (void)fprintf(stdout, "%s%s %s (ignored)\n", progname,
1.46 christos 1245: msg, gn->name);
1.96 christos 1246: (void)fflush(stdout);
1.1 cgd 1247: } else if (keepgoing) {
1.152 christos 1248: (void)fprintf(stdout, "%s%s %s (continuing)\n", progname,
1.46 christos 1249: msg, gn->name);
1.96 christos 1250: (void)fflush(stdout);
1.12 christos 1251: return FALSE;
1.1 cgd 1252: } else {
1.46 christos 1253: (*abortProc)("%s%s %s. Stop", progname, msg, gn->name);
1.12 christos 1254: return FALSE;
1.1 cgd 1255: }
1256: }
1257: }
1.12 christos 1258: return TRUE;
1.1 cgd 1259: }
1260:
1261: /*-
1262: *-----------------------------------------------------------------------
1263: * JobExec --
1.116 dsl 1264: * Execute the shell for the given job. Called from JobStart
1.1 cgd 1265: *
1.72 wiz 1266: * Input:
1267: * job Job to execute
1268: *
1.1 cgd 1269: * Results:
1270: * None.
1271: *
1272: * Side Effects:
1273: * A shell is executed, outputs is altered and the Job structure added
1274: * to the job table.
1275: *
1276: *-----------------------------------------------------------------------
1277: */
1278: static void
1.72 wiz 1279: JobExec(Job *job, char **argv)
1.1 cgd 1280: {
1.139 christos 1281: int cpid; /* ID of new child */
1.69 pk 1282: sigset_t mask;
1.16 christos 1283:
1.49 sjg 1284: job->flags &= ~JOB_TRACED;
1285:
1.1 cgd 1286: if (DEBUG(JOB)) {
1287: int i;
1.16 christos 1288:
1.123 dsl 1289: (void)fprintf(debug_file, "Running %s %sly\n", job->node->name, "local");
1290: (void)fprintf(debug_file, "\tCommand: ");
1.12 christos 1291: for (i = 0; argv[i] != NULL; i++) {
1.123 dsl 1292: (void)fprintf(debug_file, "%s ", argv[i]);
1.1 cgd 1293: }
1.123 dsl 1294: (void)fprintf(debug_file, "\n");
1.1 cgd 1295: }
1.16 christos 1296:
1.1 cgd 1297: /*
1298: * Some jobs produce no output and it's disconcerting to have
1.16 christos 1299: * no feedback of their running (since they produce no output, the
1.1 cgd 1300: * banner with their name in it never appears). This is an attempt to
1301: * provide that feedback, even if nothing follows it.
1302: */
1.109 dsl 1303: if ((lastNode != job->node) && !(job->flags & JOB_SILENT)) {
1.12 christos 1304: MESSAGE(stdout, job->node);
1.1 cgd 1305: lastNode = job->node;
1306: }
1.16 christos 1307:
1.69 pk 1308: /* No interruptions until this job is on the `jobs' list */
1309: JobSigLock(&mask);
1310:
1.116 dsl 1311: /* Pre-emptively mark job running, pid still zero though */
1312: job->job_state = JOB_ST_RUNNING;
1313:
1.149 sjg 1314: cpid = vFork();
1.116 dsl 1315: if (cpid == -1)
1.53 matt 1316: Punt("Cannot vfork: %s", strerror(errno));
1.116 dsl 1317:
1318: if (cpid == 0) {
1319: /* Child */
1.146 sjg 1320: sigset_t tmask;
1.1 cgd 1321:
1.155 sjg 1322: #ifdef USE_META
1323: if (useMeta) {
1324: meta_job_child(job);
1325: }
1326: #endif
1.1 cgd 1327: /*
1.69 pk 1328: * Reset all signal handlers; this is necessary because we also
1329: * need to unblock signals before we exec(2).
1330: */
1331: JobSigReset();
1332:
1333: /* Now unblock signals */
1.146 sjg 1334: sigemptyset(&tmask);
1335: JobSigUnlock(&tmask);
1.69 pk 1336:
1337: /*
1.1 cgd 1338: * Must duplicate the input stream down to the child's input and
1.16 christos 1339: * reset it to the beginning (again). Since the stream was marked
1.1 cgd 1340: * close-on-exec, we must clear that bit in the new input.
1341: */
1.64 pk 1342: if (dup2(FILENO(job->cmdFILE), 0) == -1) {
1343: execError("dup2", "job->cmdFILE");
1344: _exit(1);
1345: }
1.96 christos 1346: (void)fcntl(0, F_SETFD, 0);
1347: (void)lseek(0, (off_t)0, SEEK_SET);
1.16 christos 1348:
1.177 christos 1349: if (job->node->type & (OP_MAKE | OP_SUBMAKE)) {
1.40 sommerfe 1350: /*
1351: * Pass job token pipe to submakes.
1352: */
1.122 dsl 1353: fcntl(tokenWaitJob.inPipe, F_SETFD, 0);
1354: fcntl(tokenWaitJob.outPipe, F_SETFD, 0);
1.40 sommerfe 1355: }
1356:
1.120 dsl 1357: /*
1358: * Set up the child's output to be routed through the pipe
1359: * we've created for it.
1360: */
1361: if (dup2(job->outPipe, 1) == -1) {
1362: execError("dup2", "job->outPipe");
1363: _exit(1);
1.1 cgd 1364: }
1365: /*
1366: * The output channels are marked close on exec. This bit was
1.96 christos 1367: * duplicated by the dup2(on some systems), so we have to clear
1.1 cgd 1368: * it before routing the shell's error output to the same place as
1369: * its standard output.
1370: */
1.96 christos 1371: (void)fcntl(1, F_SETFD, 0);
1.64 pk 1372: if (dup2(1, 2) == -1) {
1373: execError("dup2", "1, 2");
1374: _exit(1);
1375: }
1.1 cgd 1376:
1377: /*
1378: * We want to switch the child into a different process family so
1379: * we can kill it and all its descendants in one fell swoop,
1380: * by killing its process family, but not commit suicide.
1381: */
1.170 christos 1382: #if defined(MAKE_NATIVE) || defined(HAVE_SETPGID)
1.119 dsl 1383: #if defined(SYSV)
1384: /* XXX: dsl - I'm sure this should be setpgrp()... */
1.97 christos 1385: (void)setsid();
1.119 dsl 1386: #else
1.96 christos 1387: (void)setpgid(0, getpid());
1.119 dsl 1388: #endif
1.170 christos 1389: #endif
1.1 cgd 1390:
1.126 sjg 1391: Var_ExportVars();
1392:
1.106 dsl 1393: (void)execv(shellPath, argv);
1394: execError("exec", shellPath);
1.12 christos 1395: _exit(1);
1.116 dsl 1396: }
1397:
1398: /* Parent, continuing after the child exec */
1399: job->pid = cpid;
1.1 cgd 1400:
1.116 dsl 1401: Trace_Log(JOBSTART, job);
1.40 sommerfe 1402:
1.120 dsl 1403: /*
1404: * Set the current position in the buffer to the beginning
1405: * and mark another stream to watch in the outputs mask
1406: */
1407: job->curPos = 0;
1.16 christos 1408:
1.120 dsl 1409: watchfd(job);
1.1 cgd 1410:
1.116 dsl 1411: if (job->cmdFILE != NULL && job->cmdFILE != stdout) {
1412: (void)fclose(job->cmdFILE);
1413: job->cmdFILE = NULL;
1.1 cgd 1414: }
1415:
1416: /*
1417: * Now the job is actually running, add it to the table.
1418: */
1.69 pk 1419: if (DEBUG(JOB)) {
1.139 christos 1420: fprintf(debug_file, "JobExec(%s): pid %d added to jobs table\n",
1421: job->node->name, job->pid);
1.114 dsl 1422: job_table_dump("job started");
1.69 pk 1423: }
1424: JobSigUnlock(&mask);
1.1 cgd 1425: }
1426:
1427: /*-
1428: *-----------------------------------------------------------------------
1429: * JobMakeArgv --
1430: * Create the argv needed to execute the shell for a given job.
1.16 christos 1431: *
1.1 cgd 1432: *
1433: * Results:
1434: *
1435: * Side Effects:
1436: *
1437: *-----------------------------------------------------------------------
1438: */
1439: static void
1.72 wiz 1440: JobMakeArgv(Job *job, char **argv)
1.1 cgd 1441: {
1442: int argc;
1.77 christos 1443: static char args[10]; /* For merged arguments */
1.16 christos 1444:
1.77 christos 1445: argv[0] = UNCONST(shellName);
1.1 cgd 1446: argc = 1;
1447:
1448: if ((commandShell->exit && (*commandShell->exit != '-')) ||
1449: (commandShell->echo && (*commandShell->echo != '-')))
1450: {
1451: /*
1452: * At least one of the flags doesn't have a minus before it, so
1453: * merge them together. Have to do this because the *(&(@*#*&#$#
1454: * Bourne shell thinks its second argument is a file to source.
1455: * Grrrr. Note the ten-character limitation on the combined arguments.
1456: */
1.29 christos 1457: (void)snprintf(args, sizeof(args), "-%s%s",
1.1 cgd 1458: ((job->flags & JOB_IGNERR) ? "" :
1459: (commandShell->exit ? commandShell->exit : "")),
1460: ((job->flags & JOB_SILENT) ? "" :
1461: (commandShell->echo ? commandShell->echo : "")));
1462:
1463: if (args[1]) {
1464: argv[argc] = args;
1465: argc++;
1466: }
1467: } else {
1468: if (!(job->flags & JOB_IGNERR) && commandShell->exit) {
1.77 christos 1469: argv[argc] = UNCONST(commandShell->exit);
1.1 cgd 1470: argc++;
1471: }
1472: if (!(job->flags & JOB_SILENT) && commandShell->echo) {
1.77 christos 1473: argv[argc] = UNCONST(commandShell->echo);
1.1 cgd 1474: argc++;
1475: }
1476: }
1.12 christos 1477: argv[argc] = NULL;
1.1 cgd 1478: }
1479:
1480: /*-
1481: *-----------------------------------------------------------------------
1482: * JobStart --
1483: * Start a target-creation process going for the target described
1.16 christos 1484: * by the graph node gn.
1.1 cgd 1485: *
1.72 wiz 1486: * Input:
1487: * gn target to create
1488: * flags flags for the job to override normal ones.
1489: * e.g. JOB_SPECIAL or JOB_IGNDOTS
1490: * previous The previous Job structure for this node, if any.
1491: *
1.1 cgd 1492: * Results:
1493: * JOB_ERROR if there was an error in the commands, JOB_FINISHED
1494: * if there isn't actually anything left to do for the job and
1495: * JOB_RUNNING if the job has been started.
1496: *
1497: * Side Effects:
1498: * A new Job node is created and added to the list of running
1499: * jobs. PMake is forked and a child shell created.
1.110 dsl 1500: *
1501: * NB: I'm fairly sure that this code is never called with JOB_SPECIAL set
1502: * JOB_IGNDOTS is never set (dsl)
1.122 dsl 1503: * Also the return value is ignored by everyone.
1.1 cgd 1504: *-----------------------------------------------------------------------
1505: */
1506: static int
1.108 dsl 1507: JobStart(GNode *gn, int flags)
1.1 cgd 1508: {
1.72 wiz 1509: Job *job; /* new job descriptor */
1.29 christos 1510: char *argv[10]; /* Argument vector to shell */
1.1 cgd 1511: Boolean cmdsOK; /* true if the nodes commands were all right */
1512: Boolean noExec; /* Set true if we decide not to run the job */
1.31 christos 1513: int tfd; /* File descriptor to the temp file */
1.1 cgd 1514:
1.114 dsl 1515: for (job = job_table; job < job_table_end; job++) {
1.116 dsl 1516: if (job->job_state == JOB_ST_FREE)
1.114 dsl 1517: break;
1518: }
1519: if (job >= job_table_end)
1.122 dsl 1520: Punt("JobStart no job slots vacant");
1521:
1.114 dsl 1522: memset(job, 0, sizeof *job);
1.116 dsl 1523: job->job_state = JOB_ST_SETUP;
1.91 christos 1524: if (gn->type & OP_SPECIAL)
1525: flags |= JOB_SPECIAL;
1.1 cgd 1526:
1527: job->node = gn;
1.142 dsl 1528: job->tailCmds = NULL;
1.1 cgd 1529:
1530: /*
1531: * Set the initial value of the flags for this job based on the global
1532: * ones and the node's attributes... Any flags supplied by the caller
1533: * are also added to the field.
1534: */
1535: job->flags = 0;
1.12 christos 1536: if (Targ_Ignore(gn)) {
1.1 cgd 1537: job->flags |= JOB_IGNERR;
1538: }
1.12 christos 1539: if (Targ_Silent(gn)) {
1.1 cgd 1540: job->flags |= JOB_SILENT;
1541: }
1542: job->flags |= flags;
1543:
1544: /*
1545: * Check the commands now so any attributes from .DEFAULT have a chance
1546: * to migrate to the node
1547: */
1.109 dsl 1548: cmdsOK = Job_CheckCommands(gn, Error);
1.16 christos 1549:
1.36 christos 1550: job->inPollfd = NULL;
1.1 cgd 1551: /*
1.16 christos 1552: * If the -n flag wasn't given, we open up OUR (not the child's)
1.1 cgd 1553: * temporary file to stuff commands in it. The thing is rd/wr so we don't
1554: * need to reopen it to feed it to the shell. If the -n flag *was* given,
1555: * we just set the file to be stdout. Cute, huh?
1556: */
1.45 sommerfe 1557: if (((gn->type & OP_MAKE) && !(noRecursiveExecute)) ||
1.122 dsl 1558: (!noExecute && !touchFlag)) {
1.1 cgd 1559: /*
1.34 christos 1560: * tfile is the name of a file into which all shell commands are
1.145 apb 1561: * put. It is removed before the child shell is executed, unless
1562: * DEBUG(SCRIPT) is set.
1.34 christos 1563: */
1.145 apb 1564: char *tfile;
1.69 pk 1565: sigset_t mask;
1.34 christos 1566: /*
1.1 cgd 1567: * We're serious here, but if the commands were bogus, we're
1568: * also dead...
1569: */
1570: if (!cmdsOK) {
1.154 sjg 1571: PrintOnError(gn, NULL); /* provide some clue */
1.1 cgd 1572: DieHorribly();
1573: }
1.16 christos 1574:
1.69 pk 1575: JobSigLock(&mask);
1.148 sjg 1576: tfd = mkTempFile(TMPPAT, &tfile);
1.94 jmc 1577: if (!DEBUG(SCRIPT))
1.96 christos 1578: (void)eunlink(tfile);
1.69 pk 1579: JobSigUnlock(&mask);
1.31 christos 1580:
1581: job->cmdFILE = fdopen(tfd, "w+");
1.12 christos 1582: if (job->cmdFILE == NULL) {
1.31 christos 1583: Punt("Could not fdopen %s", tfile);
1.1 cgd 1584: }
1.96 christos 1585: (void)fcntl(FILENO(job->cmdFILE), F_SETFD, 1);
1.1 cgd 1586: /*
1587: * Send the commands to the command file, flush all its buffers then
1588: * rewind and remove the thing.
1589: */
1590: noExec = FALSE;
1591:
1.155 sjg 1592: #ifdef USE_META
1593: if (useMeta) {
1594: meta_job_start(job, gn);
1.159 sjg 1595: if (Targ_Silent(gn)) { /* might have changed */
1596: job->flags |= JOB_SILENT;
1597: }
1.155 sjg 1598: }
1599: #endif
1.1 cgd 1600: /*
1.107 dsl 1601: * We can do all the commands at once. hooray for sanity
1.1 cgd 1602: */
1.107 dsl 1603: numCommands = 0;
1.124 dsl 1604: Lst_ForEach(gn->commands, JobPrintCommand, job);
1.16 christos 1605:
1.107 dsl 1606: /*
1607: * If we didn't print out any commands to the shell script,
1608: * there's not much point in executing the shell, is there?
1609: */
1610: if (numCommands == 0) {
1611: noExec = TRUE;
1.1 cgd 1612: }
1.145 apb 1613:
1614: free(tfile);
1.45 sommerfe 1615: } else if (NoExecute(gn)) {
1.1 cgd 1616: /*
1617: * Not executing anything -- just print all the commands to stdout
1618: * in one fell swoop. This will still set up job->tailCmds correctly.
1619: */
1620: if (lastNode != gn) {
1.12 christos 1621: MESSAGE(stdout, gn);
1.1 cgd 1622: lastNode = gn;
1623: }
1624: job->cmdFILE = stdout;
1625: /*
1626: * Only print the commands if they're ok, but don't die if they're
1627: * not -- just let the user know they're bad and keep going. It
1628: * doesn't do any harm in this case and may do some good.
1629: */
1630: if (cmdsOK) {
1.124 dsl 1631: Lst_ForEach(gn->commands, JobPrintCommand, job);
1.1 cgd 1632: }
1633: /*
1634: * Don't execute the shell, thank you.
1635: */
1636: noExec = TRUE;
1637: } else {
1638: /*
1639: * Just touch the target and note that no shell should be executed.
1640: * Set cmdFILE to stdout to make life easier. Check the commands, too,
1641: * but don't die if they're no good -- it does no harm to keep working
1642: * up the graph.
1643: */
1644: job->cmdFILE = stdout;
1.12 christos 1645: Job_Touch(gn, job->flags&JOB_SILENT);
1.1 cgd 1646: noExec = TRUE;
1647: }
1.118 dsl 1648: /* Just in case it isn't already... */
1649: (void)fflush(job->cmdFILE);
1.1 cgd 1650:
1651: /*
1.16 christos 1652: * If we're not supposed to execute a shell, don't.
1.1 cgd 1653: */
1654: if (noExec) {
1.110 dsl 1655: if (!(job->flags & JOB_SPECIAL))
1656: Job_TokenReturn();
1.1 cgd 1657: /*
1658: * Unlink and close the command file if we opened one
1659: */
1660: if (job->cmdFILE != stdout) {
1.34 christos 1661: if (job->cmdFILE != NULL) {
1.96 christos 1662: (void)fclose(job->cmdFILE);
1.34 christos 1663: job->cmdFILE = NULL;
1664: }
1.1 cgd 1665: }
1666:
1667: /*
1668: * We only want to work our way up the graph if we aren't here because
1669: * the commands for the job were no good.
1670: */
1.118 dsl 1671: if (cmdsOK && aborting == 0) {
1.142 dsl 1672: if (job->tailCmds != NULL) {
1.118 dsl 1673: Lst_ForEachFrom(job->node->commands, job->tailCmds,
1674: JobSaveCommand,
1.124 dsl 1675: job->node);
1.1 cgd 1676: }
1.118 dsl 1677: job->node->made = MADE;
1678: Make_Update(job->node);
1.1 cgd 1679: }
1.118 dsl 1680: job->job_state = JOB_ST_FREE;
1681: return cmdsOK ? JOB_FINISHED : JOB_ERROR;
1.1 cgd 1682: }
1683:
1684: /*
1685: * Set up the control arguments to the shell. This is based on the flags
1686: * set earlier for this job.
1687: */
1688: JobMakeArgv(job, argv);
1689:
1.122 dsl 1690: /* Create the pipe by which we'll get the shell's output. */
1691: JobCreatePipe(job, 3);
1.1 cgd 1692:
1.106 dsl 1693: JobExec(job, argv);
1.1 cgd 1694: return(JOB_RUNNING);
1695: }
1696:
1.16 christos 1697: static char *
1.72 wiz 1698: JobOutput(Job *job, char *cp, char *endp, int msg)
1.12 christos 1699: {
1.72 wiz 1700: char *ecp;
1.12 christos 1701:
1702: if (commandShell->noPrint) {
1703: ecp = Str_FindSubstring(cp, commandShell->noPrint);
1704: while (ecp != NULL) {
1705: if (cp != ecp) {
1706: *ecp = '\0';
1.99 dsl 1707: if (!beSilent && msg && job->node != lastNode) {
1.12 christos 1708: MESSAGE(stdout, job->node);
1709: lastNode = job->node;
1710: }
1711: /*
1712: * The only way there wouldn't be a newline after
1713: * this line is if it were the last in the buffer.
1714: * however, since the non-printable comes after it,
1715: * there must be a newline, so we don't print one.
1716: */
1.96 christos 1717: (void)fprintf(stdout, "%s", cp);
1718: (void)fflush(stdout);
1.12 christos 1719: }
1720: cp = ecp + commandShell->noPLen;
1721: if (cp != endp) {
1722: /*
1723: * Still more to print, look again after skipping
1724: * the whitespace following the non-printable
1725: * command....
1726: */
1727: cp++;
1728: while (*cp == ' ' || *cp == '\t' || *cp == '\n') {
1729: cp++;
1730: }
1731: ecp = Str_FindSubstring(cp, commandShell->noPrint);
1732: } else {
1733: return cp;
1734: }
1735: }
1736: }
1737: return cp;
1738: }
1739:
1.1 cgd 1740: /*-
1741: *-----------------------------------------------------------------------
1742: * JobDoOutput --
1743: * This function is called at different times depending on
1744: * whether the user has specified that output is to be collected
1745: * via pipes or temporary files. In the former case, we are called
1746: * whenever there is something to read on the pipe. We collect more
1747: * output from the given job and store it in the job's outBuf. If
1748: * this makes up a line, we print it tagged by the job's identifier,
1749: * as necessary.
1750: * If output has been collected in a temporary file, we open the
1751: * file and read it line by line, transfering it to our own
1752: * output channel until the file is empty. At which point we
1753: * remove the temporary file.
1754: * In both cases, however, we keep our figurative eye out for the
1755: * 'noPrint' line for the shell from which the output came. If
1756: * we recognize a line, we don't print it. If the command is not
1.16 christos 1757: * alone on the line (the character after it is not \0 or \n), we
1.1 cgd 1758: * do print whatever follows it.
1759: *
1.72 wiz 1760: * Input:
1761: * job the job whose output needs printing
1762: * finish TRUE if this is the last time we'll be called
1763: * for this job
1764: *
1.1 cgd 1765: * Results:
1766: * None
1767: *
1768: * Side Effects:
1769: * curPos may be shifted as may the contents of outBuf.
1770: *-----------------------------------------------------------------------
1771: */
1.12 christos 1772: STATIC void
1.72 wiz 1773: JobDoOutput(Job *job, Boolean finish)
1.1 cgd 1774: {
1775: Boolean gotNL = FALSE; /* true if got a newline */
1.12 christos 1776: Boolean fbuf; /* true if our buffer filled up */
1.139 christos 1777: int nr; /* number of bytes read */
1778: int i; /* auxiliary index into outBuf */
1779: int max; /* limit for i (end of current data) */
1780: int nRead; /* (Temporary) number of bytes read */
1.1 cgd 1781:
1.120 dsl 1782: /*
1783: * Read as many bytes as will fit in the buffer.
1784: */
1.1 cgd 1785: end_loop:
1.120 dsl 1786: gotNL = FALSE;
1787: fbuf = FALSE;
1.16 christos 1788:
1.120 dsl 1789: nRead = read(job->inPipe, &job->outBuf[job->curPos],
1.139 christos 1790: JOB_BUFSIZE - job->curPos);
1.120 dsl 1791: if (nRead < 0) {
1.122 dsl 1792: if (errno == EAGAIN)
1793: return;
1.120 dsl 1794: if (DEBUG(JOB)) {
1795: perror("JobDoOutput(piperead)");
1.1 cgd 1796: }
1.120 dsl 1797: nr = 0;
1798: } else {
1799: nr = nRead;
1800: }
1.1 cgd 1801:
1.120 dsl 1802: /*
1803: * If we hit the end-of-file (the job is dead), we must flush its
1804: * remaining output, so pretend we read a newline if there's any
1805: * output remaining in the buffer.
1806: * Also clear the 'finish' flag so we stop looping.
1807: */
1808: if ((nr == 0) && (job->curPos != 0)) {
1809: job->outBuf[job->curPos] = '\n';
1810: nr = 1;
1811: finish = FALSE;
1812: } else if (nr == 0) {
1813: finish = FALSE;
1814: }
1.16 christos 1815:
1.120 dsl 1816: /*
1817: * Look for the last newline in the bytes we just got. If there is
1818: * one, break out of the loop with 'i' as its index and gotNL set
1819: * TRUE.
1820: */
1821: max = job->curPos + nr;
1.139 christos 1822: for (i = job->curPos + nr - 1; i >= job->curPos; i--) {
1823: if (job->outBuf[i] == '\n') {
1824: gotNL = TRUE;
1825: break;
1826: } else if (job->outBuf[i] == '\0') {
1827: /*
1828: * Why?
1829: */
1830: job->outBuf[i] = ' ';
1.1 cgd 1831: }
1.139 christos 1832: }
1.16 christos 1833:
1.120 dsl 1834: if (!gotNL) {
1835: job->curPos += nr;
1836: if (job->curPos == JOB_BUFSIZE) {
1.1 cgd 1837: /*
1.120 dsl 1838: * If we've run out of buffer space, we have no choice
1839: * but to print the stuff. sigh.
1.1 cgd 1840: */
1.120 dsl 1841: fbuf = TRUE;
1842: i = job->curPos;
1843: }
1844: }
1845: if (gotNL || fbuf) {
1846: /*
1847: * Need to send the output to the screen. Null terminate it
1848: * first, overwriting the newline character if there was one.
1849: * So long as the line isn't one we should filter (according
1850: * to the shell description), we print the line, preceded
1851: * by a target banner if this target isn't the same as the
1852: * one for which we last printed something.
1853: * The rest of the data in the buffer are then shifted down
1854: * to the start of the buffer and curPos is set accordingly.
1855: */
1856: job->outBuf[i] = '\0';
1857: if (i >= job->curPos) {
1858: char *cp;
1.16 christos 1859:
1.120 dsl 1860: cp = JobOutput(job, job->outBuf, &job->outBuf[i], FALSE);
1.1 cgd 1861:
1.120 dsl 1862: /*
1863: * There's still more in that thar buffer. This time, though,
1864: * we know there's no newline at the end, so we add one of
1865: * our own free will.
1866: */
1867: if (*cp != '\0') {
1868: if (!beSilent && job->node != lastNode) {
1869: MESSAGE(stdout, job->node);
1870: lastNode = job->node;
1.1 cgd 1871: }
1.155 sjg 1872: #ifdef USE_META
1873: if (useMeta) {
1874: meta_job_output(job, cp, gotNL ? "\n" : "");
1875: }
1876: #endif
1.120 dsl 1877: (void)fprintf(stdout, "%s%s", cp, gotNL ? "\n" : "");
1878: (void)fflush(stdout);
1.1 cgd 1879: }
1.120 dsl 1880: }
1.180 ! joerg 1881: /*
! 1882: * max is the last offset still in the buffer. Move any remaining
! 1883: * characters to the start of the buffer and update the end marker
! 1884: * curPos.
! 1885: */
! 1886: if (i < max) {
! 1887: (void)memmove(job->outBuf, &job->outBuf[i + 1], max - (i + 1));
! 1888: job->curPos = max - (i + 1);
! 1889: } else {
! 1890: assert(i == max);
! 1891: job->curPos = 0;
! 1892: }
1.120 dsl 1893: }
1894: if (finish) {
1.1 cgd 1895: /*
1.120 dsl 1896: * If the finish flag is true, we must loop until we hit
1897: * end-of-file on the pipe. This is guaranteed to happen
1898: * eventually since the other end of the pipe is now closed
1899: * (we closed it explicitly and the child has exited). When
1900: * we do get an EOF, finish will be set FALSE and we'll fall
1901: * through and out.
1902: */
1903: goto end_loop;
1.1 cgd 1904: }
1905: }
1906:
1.91 christos 1907: static void
1908: JobRun(GNode *targ)
1909: {
1910: #ifdef notyet
1911: /*
1912: * Unfortunately it is too complicated to run .BEGIN, .END,
1913: * and .INTERRUPT job in the parallel job module. This has
1914: * the nice side effect that it avoids a lot of other problems.
1915: */
1916: Lst lst = Lst_Init(FALSE);
1917: Lst_AtEnd(lst, targ);
1918: (void)Make_Run(lst);
1.142 dsl 1919: Lst_Destroy(lst, NULL);
1.108 dsl 1920: JobStart(targ, JOB_SPECIAL);
1.110 dsl 1921: while (jobTokensRunning) {
1.91 christos 1922: Job_CatchOutput();
1923: }
1924: #else
1925: Compat_Make(targ, targ);
1926: if (targ->made == ERROR) {
1.147 sjg 1927: PrintOnError(targ, "\n\nStop.");
1.91 christos 1928: exit(1);
1929: }
1930: #endif
1931: }
1932:
1.1 cgd 1933: /*-
1934: *-----------------------------------------------------------------------
1935: * Job_CatchChildren --
1936: * Handle the exit of a child. Called from Make_Make.
1937: *
1.72 wiz 1938: * Input:
1939: * block TRUE if should block on the wait
1940: *
1.1 cgd 1941: * Results:
1942: * none.
1943: *
1944: * Side Effects:
1945: * The job descriptor is removed from the list of children.
1946: *
1947: * Notes:
1948: * We do waits, blocking or not, according to the wisdom of our
1949: * caller, until there are no more children to report. For each
1.118 dsl 1950: * job, call JobFinish to finish things off.
1.1 cgd 1951: *
1952: *-----------------------------------------------------------------------
1953: */
1.116 dsl 1954:
1.1 cgd 1955: void
1.120 dsl 1956: Job_CatchChildren(void)
1.1 cgd 1957: {
1.139 christos 1958: int pid; /* pid of dead child */
1959: int status; /* Exit/termination status */
1.1 cgd 1960:
1961: /*
1962: * Don't even bother if we know there's no one around.
1963: */
1.116 dsl 1964: if (jobTokensRunning == 0)
1.1 cgd 1965: return;
1.16 christos 1966:
1.120 dsl 1967: while ((pid = waitpid((pid_t) -1, &status, WNOHANG | WUNTRACED)) > 0) {
1.12 christos 1968: if (DEBUG(JOB)) {
1.139 christos 1969: (void)fprintf(debug_file, "Process %d exited/stopped status %x.\n", pid,
1970: status);
1.12 christos 1971: }
1.153 sjg 1972: JobReapChild(pid, status, TRUE);
1973: }
1974: }
1975:
1976: /*
1977: * It is possible that wait[pid]() was called from elsewhere,
1978: * this lets us reap jobs regardless.
1979: */
1980: void
1981: JobReapChild(pid_t pid, int status, Boolean isJobs)
1982: {
1983: Job *job; /* job descriptor for dead child */
1984:
1985: /*
1986: * Don't even bother if we know there's no one around.
1987: */
1988: if (jobTokensRunning == 0)
1989: return;
1.16 christos 1990:
1.153 sjg 1991: job = JobFindPid(pid, JOB_ST_RUNNING, isJobs);
1992: if (job == NULL) {
1993: if (isJobs) {
1.117 dsl 1994: if (!lurking_children)
1.139 christos 1995: Error("Child (%d) status %x not in table?", pid, status);
1.116 dsl 1996: }
1.153 sjg 1997: return; /* not ours */
1998: }
1999: if (WIFSTOPPED(status)) {
2000: if (DEBUG(JOB)) {
2001: (void)fprintf(debug_file, "Process %d (%s) stopped.\n",
2002: job->pid, job->node->name);
2003: }
2004: if (!make_suspended) {
2005: switch (WSTOPSIG(status)) {
2006: case SIGTSTP:
2007: (void)printf("*** [%s] Suspended\n", job->node->name);
2008: break;
2009: case SIGSTOP:
2010: (void)printf("*** [%s] Stopped\n", job->node->name);
2011: break;
2012: default:
2013: (void)printf("*** [%s] Stopped -- signal %d\n",
2014: job->node->name, WSTOPSIG(status));
1.1 cgd 2015: }
1.153 sjg 2016: job->job_suspended = 1;
1.1 cgd 2017: }
1.153 sjg 2018: (void)fflush(stdout);
2019: return;
2020: }
1.1 cgd 2021:
1.153 sjg 2022: job->job_state = JOB_ST_FINISHED;
2023: job->exit_status = status;
1.116 dsl 2024:
1.153 sjg 2025: JobFinish(job, status);
1.1 cgd 2026: }
2027:
2028: /*-
2029: *-----------------------------------------------------------------------
2030: * Job_CatchOutput --
2031: * Catch the output from our children, if we're using
2032: * pipes do so. Otherwise just block time until we get a
1.96 christos 2033: * signal(most likely a SIGCHLD) since there's no point in
1.1 cgd 2034: * just spinning when there's nothing to do and the reaping
1.16 christos 2035: * of a child can wait for a while.
1.1 cgd 2036: *
2037: * Results:
1.16 christos 2038: * None
1.1 cgd 2039: *
2040: * Side Effects:
2041: * Output is read from pipes if we're piping.
2042: * -----------------------------------------------------------------------
2043: */
2044: void
1.72 wiz 2045: Job_CatchOutput(void)
1.1 cgd 2046: {
1.122 dsl 2047: int nready;
2048: Job *job;
1.169 christos 2049: int i;
1.1 cgd 2050:
1.96 christos 2051: (void)fflush(stdout);
1.105 dsl 2052:
1.120 dsl 2053: /* The first fd in the list is the job token pipe */
1.169 christos 2054: do {
2055: nready = poll(fds + 1 - wantToken, nfds - 1 + wantToken, POLL_MSEC);
2056: } while (nready < 0 && errno == EINTR);
2057:
2058: if (nready < 0)
2059: Punt("poll: %s", strerror(errno));
1.120 dsl 2060:
1.169 christos 2061: if (nready > 0 && readyfd(&childExitJob)) {
1.120 dsl 2062: char token = 0;
1.169 christos 2063: ssize_t count;
2064: count = read(childExitJob.inPipe, &token, 1);
2065: switch (count) {
2066: case 0:
2067: Punt("unexpected eof on token pipe");
2068: case -1:
2069: Punt("token pipe read: %s", strerror(errno));
2070: case 1:
2071: if (token == DO_JOB_RESUME[0])
2072: /* Complete relay requested from our SIGCONT handler */
2073: JobRestartJobs();
2074: break;
2075: default:
2076: abort();
2077: }
2078: --nready;
1.120 dsl 2079: }
2080:
1.169 christos 2081: Job_CatchChildren();
2082: if (nready == 0)
2083: return;
1.122 dsl 2084:
2085: for (i = 2; i < nfds; i++) {
2086: if (!fds[i].revents)
2087: continue;
2088: job = jobfds[i];
1.169 christos 2089: if (job->job_state == JOB_ST_RUNNING)
2090: JobDoOutput(job, FALSE);
2091: if (--nready == 0)
2092: return;
1.1 cgd 2093: }
2094: }
2095:
2096: /*-
2097: *-----------------------------------------------------------------------
2098: * Job_Make --
2099: * Start the creation of a target. Basically a front-end for
2100: * JobStart used by the Make module.
2101: *
2102: * Results:
2103: * None.
2104: *
2105: * Side Effects:
2106: * Another job is started.
2107: *
2108: *-----------------------------------------------------------------------
2109: */
2110: void
1.72 wiz 2111: Job_Make(GNode *gn)
1.1 cgd 2112: {
1.108 dsl 2113: (void)JobStart(gn, 0);
1.1 cgd 2114: }
2115:
1.81 sjg 2116: void
1.120 dsl 2117: Shell_Init(void)
1.81 sjg 2118: {
2119: if (shellPath == NULL) {
2120: /*
1.127 sjg 2121: * We are using the default shell, which may be an absolute
1.133 apb 2122: * path if DEFSHELL_CUSTOM is defined.
1.81 sjg 2123: */
2124: shellName = commandShell->name;
1.133 apb 2125: #ifdef DEFSHELL_CUSTOM
1.127 sjg 2126: if (*shellName == '/') {
2127: shellPath = shellName;
2128: shellName = strrchr(shellPath, '/');
2129: shellName++;
2130: } else
2131: #endif
1.81 sjg 2132: shellPath = str_concat(_PATH_DEFSHELLDIR, shellName, STR_ADDSLASH);
2133: }
2134: if (commandShell->exit == NULL) {
2135: commandShell->exit = "";
2136: }
2137: if (commandShell->echo == NULL) {
2138: commandShell->echo = "";
2139: }
1.174 sjg 2140: if (commandShell->hasErrCtl && *commandShell->exit) {
2141: if (shellErrFlag &&
2142: strcmp(commandShell->exit, &shellErrFlag[1]) != 0) {
2143: free(shellErrFlag);
2144: shellErrFlag = NULL;
2145: }
2146: if (!shellErrFlag) {
2147: int n = strlen(commandShell->exit) + 2;
2148:
2149: shellErrFlag = bmake_malloc(n);
2150: if (shellErrFlag) {
2151: snprintf(shellErrFlag, n, "-%s", commandShell->exit);
2152: }
2153: }
2154: } else if (shellErrFlag) {
2155: free(shellErrFlag);
2156: shellErrFlag = NULL;
2157: }
1.81 sjg 2158: }
2159:
1.1 cgd 2160: /*-
1.112 rillig 2161: * Returns the string literal that is used in the current command shell
2162: * to produce a newline character.
2163: */
2164: const char *
2165: Shell_GetNewline(void)
2166: {
2167:
2168: return commandShell->newline;
2169: }
2170:
1.125 sjg 2171: void
2172: Job_SetPrefix(void)
2173: {
2174:
2175: if (targPrefix) {
2176: free(targPrefix);
1.126 sjg 2177: } else if (!Var_Exists(MAKE_JOB_PREFIX, VAR_GLOBAL)) {
2178: Var_Set(MAKE_JOB_PREFIX, "---", VAR_GLOBAL, 0);
1.125 sjg 2179: }
1.128 dsl 2180:
1.132 apb 2181: targPrefix = Var_Subst(NULL, "${" MAKE_JOB_PREFIX "}", VAR_GLOBAL, 0);
1.125 sjg 2182: }
2183:
1.112 rillig 2184: /*-
1.1 cgd 2185: *-----------------------------------------------------------------------
2186: * Job_Init --
2187: * Initialize the process module
2188: *
1.72 wiz 2189: * Input:
2190: *
1.1 cgd 2191: * Results:
2192: * none
2193: *
2194: * Side Effects:
2195: * lists and counters are initialized
2196: *-----------------------------------------------------------------------
2197: */
2198: void
1.111 dsl 2199: Job_Init(void)
1.1 cgd 2200: {
1.176 sjg 2201: Job_SetPrefix();
1.114 dsl 2202: /* Allocate space for all the job info */
1.140 joerg 2203: job_table = bmake_malloc(maxJobs * sizeof *job_table);
1.114 dsl 2204: memset(job_table, 0, maxJobs * sizeof *job_table);
2205: job_table_end = job_table + maxJobs;
1.120 dsl 2206: wantToken = 0;
1.1 cgd 2207:
2208: aborting = 0;
2209: errors = 0;
2210:
1.142 dsl 2211: lastNode = NULL;
1.1 cgd 2212:
1.117 dsl 2213: /*
2214: * There is a non-zero chance that we already have children.
2215: * eg after 'make -f- <<EOF'
2216: * Since their termination causes a 'Child (pid) not in table' message,
2217: * Collect the status of any that are already dead, and suppress the
2218: * error message if there are any undead ones.
2219: */
2220: for (;;) {
2221: int rval, status;
2222: rval = waitpid((pid_t) -1, &status, WNOHANG);
2223: if (rval > 0)
2224: continue;
2225: if (rval == 0)
2226: lurking_children = 1;
2227: break;
2228: }
2229:
1.81 sjg 2230: Shell_Init();
1.1 cgd 2231:
1.122 dsl 2232: JobCreatePipe(&childExitJob, 3);
1.73 gson 2233:
1.122 dsl 2234: /* We can only need to wait for tokens, children and output from each job */
1.140 joerg 2235: fds = bmake_malloc(sizeof (*fds) * (2 + maxJobs));
2236: jobfds = bmake_malloc(sizeof (*jobfds) * (2 + maxJobs));
1.122 dsl 2237:
2238: /* These are permanent entries and take slots 0 and 1 */
2239: watchfd(&tokenWaitJob);
2240: watchfd(&childExitJob);
1.73 gson 2241:
1.69 pk 2242: sigemptyset(&caught_signals);
1.1 cgd 2243: /*
1.73 gson 2244: * Install a SIGCHLD handler.
1.1 cgd 2245: */
1.150 sjg 2246: (void)bmake_signal(SIGCHLD, JobChildSig);
1.69 pk 2247: sigaddset(&caught_signals, SIGCHLD);
2248:
2249: #define ADDSIG(s,h) \
1.150 sjg 2250: if (bmake_signal(s, SIG_IGN) != SIG_IGN) { \
1.69 pk 2251: sigaddset(&caught_signals, s); \
1.150 sjg 2252: (void)bmake_signal(s, h); \
1.1 cgd 2253: }
1.69 pk 2254:
1.37 sommerfe 2255: /*
1.69 pk 2256: * Catch the four signals that POSIX specifies if they aren't ignored.
2257: * JobPassSig will take care of calling JobInterrupt if appropriate.
1.37 sommerfe 2258: */
1.116 dsl 2259: ADDSIG(SIGINT, JobPassSig_int)
2260: ADDSIG(SIGHUP, JobPassSig_term)
2261: ADDSIG(SIGTERM, JobPassSig_term)
2262: ADDSIG(SIGQUIT, JobPassSig_term)
1.69 pk 2263:
1.1 cgd 2264: /*
2265: * There are additional signals that need to be caught and passed if
2266: * either the export system wants to be told directly of signals or if
1.16 christos 2267: * we're giving each job its own process group (since then it won't get
1.1 cgd 2268: * signals from the terminal driver as we own the terminal)
2269: */
1.116 dsl 2270: ADDSIG(SIGTSTP, JobPassSig_suspend)
2271: ADDSIG(SIGTTOU, JobPassSig_suspend)
2272: ADDSIG(SIGTTIN, JobPassSig_suspend)
2273: ADDSIG(SIGWINCH, JobCondPassSig)
1.69 pk 2274: ADDSIG(SIGCONT, JobContinueSig)
2275: #undef ADDSIG
1.16 christos 2276:
1.172 christos 2277: (void)Job_RunTarget(".BEGIN", NULL);
1.12 christos 2278: postCommands = Targ_FindNode(".END", TARG_CREATE);
1.1 cgd 2279: }
2280:
1.72 wiz 2281: static void JobSigReset(void)
1.69 pk 2282: {
2283: #define DELSIG(s) \
2284: if (sigismember(&caught_signals, s)) { \
1.150 sjg 2285: (void)bmake_signal(s, SIG_DFL); \
1.69 pk 2286: }
2287:
2288: DELSIG(SIGINT)
2289: DELSIG(SIGHUP)
2290: DELSIG(SIGQUIT)
2291: DELSIG(SIGTERM)
2292: DELSIG(SIGTSTP)
2293: DELSIG(SIGTTOU)
2294: DELSIG(SIGTTIN)
2295: DELSIG(SIGWINCH)
2296: DELSIG(SIGCONT)
2297: #undef DELSIG
1.150 sjg 2298: (void)bmake_signal(SIGCHLD, SIG_DFL);
1.69 pk 2299: }
2300:
1.1 cgd 2301: /*-
2302: *-----------------------------------------------------------------------
2303: * JobMatchShell --
1.66 pk 2304: * Find a shell in 'shells' given its name.
1.1 cgd 2305: *
2306: * Results:
2307: * A pointer to the Shell structure.
2308: *
2309: * Side Effects:
2310: * None.
2311: *
2312: *-----------------------------------------------------------------------
2313: */
2314: static Shell *
1.77 christos 2315: JobMatchShell(const char *name)
1.1 cgd 2316: {
1.66 pk 2317: Shell *sh;
1.1 cgd 2318:
2319: for (sh = shells; sh->name != NULL; sh++) {
1.66 pk 2320: if (strcmp(name, sh->name) == 0)
2321: return (sh);
1.1 cgd 2322: }
1.142 dsl 2323: return NULL;
1.1 cgd 2324: }
2325:
2326: /*-
2327: *-----------------------------------------------------------------------
2328: * Job_ParseShell --
2329: * Parse a shell specification and set up commandShell, shellPath
2330: * and shellName appropriately.
2331: *
1.72 wiz 2332: * Input:
2333: * line The shell spec
2334: *
1.1 cgd 2335: * Results:
2336: * FAILURE if the specification was incorrect.
2337: *
2338: * Side Effects:
2339: * commandShell points to a Shell structure (either predefined or
2340: * created from the shell spec), shellPath is the full path of the
2341: * shell described by commandShell, while shellName is just the
2342: * final component of shellPath.
2343: *
2344: * Notes:
2345: * A shell specification consists of a .SHELL target, with dependency
2346: * operator, followed by a series of blank-separated words. Double
2347: * quotes can be used to use blanks in words. A backslash escapes
2348: * anything (most notably a double-quote and a space) and
2349: * provides the functionality it does in C. Each word consists of
2350: * keyword and value separated by an equal sign. There should be no
2351: * unnecessary spaces in the word. The keywords are as follows:
2352: * name Name of shell.
1.66 pk 2353: * path Location of shell.
1.1 cgd 2354: * quiet Command to turn off echoing.
2355: * echo Command to turn echoing on
2356: * filter Result of turning off echoing that shouldn't be
2357: * printed.
2358: * echoFlag Flag to turn echoing on at the start
2359: * errFlag Flag to turn error checking on at the start
2360: * hasErrCtl True if shell has error checking control
1.112 rillig 2361: * newline String literal to represent a newline char
1.1 cgd 2362: * check Command to turn on error checking if hasErrCtl
2363: * is TRUE or template of command to echo a command
2364: * for which error checking is off if hasErrCtl is
2365: * FALSE.
2366: * ignore Command to turn off error checking if hasErrCtl
2367: * is TRUE or template of command to execute a
2368: * command so as to ignore any errors it returns if
2369: * hasErrCtl is FALSE.
2370: *
2371: *-----------------------------------------------------------------------
2372: */
2373: ReturnStatus
1.72 wiz 2374: Job_ParseShell(char *line)
1.1 cgd 2375: {
1.65 pk 2376: char **words;
2377: char **argv;
1.139 christos 2378: int argc;
1.65 pk 2379: char *path;
2380: Shell newShell;
2381: Boolean fullSpec = FALSE;
1.66 pk 2382: Shell *sh;
1.1 cgd 2383:
1.24 christos 2384: while (isspace((unsigned char)*line)) {
1.1 cgd 2385: line++;
2386: }
1.22 christos 2387:
2388: if (shellArgv)
1.77 christos 2389: free(UNCONST(shellArgv));
1.22 christos 2390:
1.97 christos 2391: memset(&newShell, 0, sizeof(newShell));
1.16 christos 2392:
1.1 cgd 2393: /*
2394: * Parse the specification by keyword
2395: */
1.77 christos 2396: words = brk_string(line, &argc, TRUE, &path);
1.143 christos 2397: if (words == NULL) {
2398: Error("Unterminated quoted string [%s]", line);
2399: return FAILURE;
2400: }
1.77 christos 2401: shellArgv = path;
1.65 pk 2402:
2403: for (path = NULL, argv = words; argc != 0; argc--, argv++) {
1.22 christos 2404: if (strncmp(*argv, "path=", 5) == 0) {
2405: path = &argv[0][5];
2406: } else if (strncmp(*argv, "name=", 5) == 0) {
2407: newShell.name = &argv[0][5];
2408: } else {
2409: if (strncmp(*argv, "quiet=", 6) == 0) {
2410: newShell.echoOff = &argv[0][6];
2411: } else if (strncmp(*argv, "echo=", 5) == 0) {
2412: newShell.echoOn = &argv[0][5];
2413: } else if (strncmp(*argv, "filter=", 7) == 0) {
2414: newShell.noPrint = &argv[0][7];
2415: newShell.noPLen = strlen(newShell.noPrint);
2416: } else if (strncmp(*argv, "echoFlag=", 9) == 0) {
2417: newShell.echo = &argv[0][9];
2418: } else if (strncmp(*argv, "errFlag=", 8) == 0) {
2419: newShell.exit = &argv[0][8];
2420: } else if (strncmp(*argv, "hasErrCtl=", 10) == 0) {
2421: char c = argv[0][10];
2422: newShell.hasErrCtl = !((c != 'Y') && (c != 'y') &&
1.12 christos 2423: (c != 'T') && (c != 't'));
1.112 rillig 2424: } else if (strncmp(*argv, "newline=", 8) == 0) {
2425: newShell.newline = &argv[0][8];
1.22 christos 2426: } else if (strncmp(*argv, "check=", 6) == 0) {
2427: newShell.errCheck = &argv[0][6];
2428: } else if (strncmp(*argv, "ignore=", 7) == 0) {
2429: newShell.ignErr = &argv[0][7];
1.83 jmc 2430: } else if (strncmp(*argv, "errout=", 7) == 0) {
2431: newShell.errOut = &argv[0][7];
2432: } else if (strncmp(*argv, "comment=", 8) == 0) {
2433: newShell.commentChar = argv[0][8];
1.22 christos 2434: } else {
2435: Parse_Error(PARSE_FATAL, "Unknown keyword \"%s\"",
2436: *argv);
2437: free(words);
2438: return(FAILURE);
2439: }
2440: fullSpec = TRUE;
2441: }
1.1 cgd 2442: }
2443:
1.12 christos 2444: if (path == NULL) {
1.1 cgd 2445: /*
2446: * If no path was given, the user wants one of the pre-defined shells,
2447: * yes? So we find the one s/he wants with the help of JobMatchShell
2448: * and set things up the right way. shellPath will be set up by
1.163 sjg 2449: * Shell_Init.
1.1 cgd 2450: */
1.12 christos 2451: if (newShell.name == NULL) {
2452: Parse_Error(PARSE_FATAL, "Neither path nor name specified");
1.66 pk 2453: free(words);
1.12 christos 2454: return(FAILURE);
1.1 cgd 2455: } else {
1.66 pk 2456: if ((sh = JobMatchShell(newShell.name)) == NULL) {
2457: Parse_Error(PARSE_WARNING, "%s: No matching shell",
2458: newShell.name);
2459: free(words);
2460: return(FAILURE);
2461: }
2462: commandShell = sh;
1.1 cgd 2463: shellName = newShell.name;
1.163 sjg 2464: if (shellPath) {
2465: /* Shell_Init has already been called! Do it again. */
2466: free(UNCONST(shellPath));
2467: shellPath = NULL;
2468: Shell_Init();
2469: }
1.1 cgd 2470: }
2471: } else {
2472: /*
1.16 christos 2473: * The user provided a path. If s/he gave nothing else (fullSpec is
1.1 cgd 2474: * FALSE), try and find a matching shell in the ones we know of.
2475: * Else we just take the specification at its word and copy it
2476: * to a new location. In either case, we need to record the
2477: * path the user gave for the shell.
2478: */
2479: shellPath = path;
1.12 christos 2480: path = strrchr(path, '/');
2481: if (path == NULL) {
1.77 christos 2482: path = UNCONST(shellPath);
1.1 cgd 2483: } else {
2484: path += 1;
2485: }
1.12 christos 2486: if (newShell.name != NULL) {
1.1 cgd 2487: shellName = newShell.name;
2488: } else {
2489: shellName = path;
2490: }
2491: if (!fullSpec) {
1.66 pk 2492: if ((sh = JobMatchShell(shellName)) == NULL) {
2493: Parse_Error(PARSE_WARNING, "%s: No matching shell",
2494: shellName);
2495: free(words);
2496: return(FAILURE);
2497: }
2498: commandShell = sh;
1.1 cgd 2499: } else {
1.140 joerg 2500: commandShell = bmake_malloc(sizeof(Shell));
1.1 cgd 2501: *commandShell = newShell;
2502: }
1.174 sjg 2503: /* this will take care of shellErrFlag */
2504: Shell_Init();
1.1 cgd 2505: }
2506:
2507: if (commandShell->echoOn && commandShell->echoOff) {
2508: commandShell->hasEchoCtl = TRUE;
2509: }
1.16 christos 2510:
1.1 cgd 2511: if (!commandShell->hasErrCtl) {
1.12 christos 2512: if (commandShell->errCheck == NULL) {
1.1 cgd 2513: commandShell->errCheck = "";
2514: }
1.12 christos 2515: if (commandShell->ignErr == NULL) {
1.1 cgd 2516: commandShell->ignErr = "%s\n";
2517: }
2518: }
1.16 christos 2519:
1.1 cgd 2520: /*
2521: * Do not free up the words themselves, since they might be in use by the
1.22 christos 2522: * shell specification.
1.1 cgd 2523: */
1.12 christos 2524: free(words);
1.1 cgd 2525: return SUCCESS;
2526: }
2527:
2528: /*-
2529: *-----------------------------------------------------------------------
2530: * JobInterrupt --
2531: * Handle the receipt of an interrupt.
2532: *
1.72 wiz 2533: * Input:
2534: * runINTERRUPT Non-zero if commands for the .INTERRUPT target
2535: * should be executed
2536: * signo signal received
2537: *
1.1 cgd 2538: * Results:
2539: * None
2540: *
2541: * Side Effects:
2542: * All children are killed. Another job will be started if the
2543: * .INTERRUPT target was given.
2544: *-----------------------------------------------------------------------
2545: */
2546: static void
1.72 wiz 2547: JobInterrupt(int runINTERRUPT, int signo)
1.69 pk 2548: {
2549: Job *job; /* job descriptor in that element */
2550: GNode *interrupt; /* the node describing the .INTERRUPT target */
2551: sigset_t mask;
1.114 dsl 2552: GNode *gn;
1.16 christos 2553:
1.1 cgd 2554: aborting = ABORT_INTERRUPT;
2555:
1.69 pk 2556: JobSigLock(&mask);
2557:
1.114 dsl 2558: for (job = job_table; job < job_table_end; job++) {
1.116 dsl 2559: if (job->job_state != JOB_ST_RUNNING)
1.114 dsl 2560: continue;
1.67 pk 2561:
2562: gn = job->node;
1.1 cgd 2563:
1.67 pk 2564: if ((gn->type & (OP_JOIN|OP_PHONY)) == 0 && !Targ_Precious(gn)) {
2565: char *file = (gn->path == NULL ? gn->name : gn->path);
1.12 christos 2566: if (!noExecute && eunlink(file) != -1) {
2567: Error("*** %s removed", file);
1.1 cgd 2568: }
2569: }
2570: if (job->pid) {
1.12 christos 2571: if (DEBUG(JOB)) {
1.123 dsl 2572: (void)fprintf(debug_file,
1.139 christos 2573: "JobInterrupt passing signal %d to child %d.\n",
2574: signo, job->pid);
1.12 christos 2575: }
1.116 dsl 2576: KILLPG(job->pid, signo);
1.12 christos 2577: }
2578: }
2579:
1.69 pk 2580: JobSigUnlock(&mask);
2581:
1.1 cgd 2582: if (runINTERRUPT && !touchFlag) {
1.12 christos 2583: interrupt = Targ_FindNode(".INTERRUPT", TARG_NOCREATE);
1.142 dsl 2584: if (interrupt != NULL) {
1.1 cgd 2585: ignoreErrors = FALSE;
1.91 christos 2586: JobRun(interrupt);
1.1 cgd 2587: }
2588: }
1.40 sommerfe 2589: Trace_Log(MAKEINTR, 0);
1.12 christos 2590: exit(signo);
1.1 cgd 2591: }
2592:
2593: /*
2594: *-----------------------------------------------------------------------
1.22 christos 2595: * Job_Finish --
1.1 cgd 2596: * Do final processing such as the running of the commands
1.16 christos 2597: * attached to the .END target.
1.1 cgd 2598: *
2599: * Results:
2600: * Number of errors reported.
2601: *
2602: * Side Effects:
1.34 christos 2603: * None.
1.1 cgd 2604: *-----------------------------------------------------------------------
2605: */
2606: int
1.72 wiz 2607: Job_Finish(void)
1.1 cgd 2608: {
1.142 dsl 2609: if (postCommands != NULL &&
1.141 sjg 2610: (!Lst_IsEmpty(postCommands->commands) ||
2611: !Lst_IsEmpty(postCommands->children))) {
1.1 cgd 2612: if (errors) {
1.12 christos 2613: Error("Errors reported so .END ignored");
1.1 cgd 2614: } else {
1.91 christos 2615: JobRun(postCommands);
1.1 cgd 2616: }
2617: }
2618: return(errors);
1.22 christos 2619: }
2620:
2621: /*-
2622: *-----------------------------------------------------------------------
2623: * Job_End --
2624: * Cleanup any memory used by the jobs module
2625: *
2626: * Results:
2627: * None.
2628: *
2629: * Side Effects:
2630: * Memory is freed
2631: *-----------------------------------------------------------------------
2632: */
2633: void
1.72 wiz 2634: Job_End(void)
1.22 christos 2635: {
1.30 mycroft 2636: #ifdef CLEANUP
1.22 christos 2637: if (shellArgv)
2638: free(shellArgv);
1.30 mycroft 2639: #endif
1.1 cgd 2640: }
2641:
2642: /*-
2643: *-----------------------------------------------------------------------
2644: * Job_Wait --
2645: * Waits for all running jobs to finish and returns. Sets 'aborting'
2646: * to ABORT_WAIT to prevent other jobs from starting.
2647: *
2648: * Results:
2649: * None.
2650: *
2651: * Side Effects:
2652: * Currently running jobs finish.
2653: *
2654: *-----------------------------------------------------------------------
2655: */
2656: void
1.72 wiz 2657: Job_Wait(void)
1.1 cgd 2658: {
2659: aborting = ABORT_WAIT;
1.110 dsl 2660: while (jobTokensRunning != 0) {
1.1 cgd 2661: Job_CatchOutput();
2662: }
2663: aborting = 0;
2664: }
2665:
2666: /*-
2667: *-----------------------------------------------------------------------
2668: * Job_AbortAll --
2669: * Abort all currently running jobs without handling output or anything.
2670: * This function is to be called only in the event of a major
2671: * error. Most definitely NOT to be called from JobInterrupt.
2672: *
2673: * Results:
2674: * None
2675: *
2676: * Side Effects:
2677: * All children are killed, not just the firstborn
2678: *-----------------------------------------------------------------------
2679: */
2680: void
1.72 wiz 2681: Job_AbortAll(void)
1.1 cgd 2682: {
1.63 pk 2683: Job *job; /* the job descriptor in that element */
2684: int foo;
1.16 christos 2685:
1.1 cgd 2686: aborting = ABORT_ERROR;
1.16 christos 2687:
1.110 dsl 2688: if (jobTokensRunning) {
1.114 dsl 2689: for (job = job_table; job < job_table_end; job++) {
1.116 dsl 2690: if (job->job_state != JOB_ST_RUNNING)
1.114 dsl 2691: continue;
1.1 cgd 2692: /*
2693: * kill the child process with increasingly drastic signals to make
1.16 christos 2694: * darn sure it's dead.
1.1 cgd 2695: */
1.116 dsl 2696: KILLPG(job->pid, SIGINT);
2697: KILLPG(job->pid, SIGKILL);
1.1 cgd 2698: }
2699: }
1.16 christos 2700:
1.1 cgd 2701: /*
2702: * Catch as many children as want to report in at first, then give up
2703: */
1.13 christos 2704: while (waitpid((pid_t) -1, &foo, WNOHANG) > 0)
1.5 cgd 2705: continue;
1.12 christos 2706: }
2707:
2708:
2709: /*-
2710: *-----------------------------------------------------------------------
2711: * JobRestartJobs --
2712: * Tries to restart stopped jobs if there are slots available.
1.118 dsl 2713: * Called in process context in response to a SIGCONT.
1.12 christos 2714: *
2715: * Results:
2716: * None.
2717: *
2718: * Side Effects:
1.116 dsl 2719: * Resumes jobs.
1.12 christos 2720: *
2721: *-----------------------------------------------------------------------
2722: */
2723: static void
1.72 wiz 2724: JobRestartJobs(void)
1.12 christos 2725: {
1.114 dsl 2726: Job *job;
1.69 pk 2727:
1.114 dsl 2728: for (job = job_table; job < job_table_end; job++) {
1.118 dsl 2729: if (job->job_state == JOB_ST_RUNNING &&
2730: (make_suspended || job->job_suspended)) {
1.116 dsl 2731: if (DEBUG(JOB)) {
1.139 christos 2732: (void)fprintf(debug_file, "Restarting stopped job pid %d.\n",
2733: job->pid);
1.116 dsl 2734: }
1.118 dsl 2735: if (job->job_suspended) {
2736: (void)printf("*** [%s] Continued\n", job->node->name);
2737: (void)fflush(stdout);
2738: }
2739: job->job_suspended = 0;
1.116 dsl 2740: if (KILLPG(job->pid, SIGCONT) != 0 && DEBUG(JOB)) {
1.139 christos 2741: fprintf(debug_file, "Failed to send SIGCONT to %d\n", job->pid);
1.116 dsl 2742: }
1.12 christos 2743: }
1.116 dsl 2744: if (job->job_state == JOB_ST_FINISHED)
2745: /* Job exit deferred after calling waitpid() in a signal handler */
2746: JobFinish(job, job->exit_status);
1.12 christos 2747: }
1.118 dsl 2748: make_suspended = 0;
1.1 cgd 2749: }
1.35 christos 2750:
2751: static void
1.72 wiz 2752: watchfd(Job *job)
1.35 christos 2753: {
1.36 christos 2754: if (job->inPollfd != NULL)
2755: Punt("Watching watched job");
1.35 christos 2756:
1.36 christos 2757: fds[nfds].fd = job->inPipe;
1.39 mycroft 2758: fds[nfds].events = POLLIN;
2759: jobfds[nfds] = job;
1.36 christos 2760: job->inPollfd = &fds[nfds];
1.39 mycroft 2761: nfds++;
1.35 christos 2762: }
2763:
2764: static void
1.72 wiz 2765: clearfd(Job *job)
1.35 christos 2766: {
2767: int i;
1.36 christos 2768: if (job->inPollfd == NULL)
2769: Punt("Unwatching unwatched job");
2770: i = job->inPollfd - fds;
2771: nfds--;
1.38 sommerfe 2772: /*
2773: * Move last job in table into hole made by dead job.
2774: */
1.36 christos 2775: if (nfds != i) {
1.38 sommerfe 2776: fds[i] = fds[nfds];
2777: jobfds[i] = jobfds[nfds];
2778: jobfds[i]->inPollfd = &fds[i];
1.36 christos 2779: }
2780: job->inPollfd = NULL;
1.35 christos 2781: }
2782:
2783: static int
1.72 wiz 2784: readyfd(Job *job)
1.35 christos 2785: {
1.36 christos 2786: if (job->inPollfd == NULL)
2787: Punt("Polling unwatched job");
2788: return (job->inPollfd->revents & POLLIN) != 0;
1.35 christos 2789: }
1.40 sommerfe 2790:
2791: /*-
2792: *-----------------------------------------------------------------------
2793: * JobTokenAdd --
2794: * Put a token into the job pipe so that some make process can start
2795: * another job.
2796: *
2797: * Side Effects:
2798: * Allows more build jobs to be spawned somewhere.
2799: *
2800: *-----------------------------------------------------------------------
2801: */
2802:
2803: static void
1.72 wiz 2804: JobTokenAdd(void)
1.40 sommerfe 2805: {
1.101 dsl 2806: char tok = JOB_TOKENS[aborting], tok1;
2807:
2808: /* If we are depositing an error token flush everything else */
1.122 dsl 2809: while (tok != '+' && read(tokenWaitJob.inPipe, &tok1, 1) == 1)
1.101 dsl 2810: continue;
1.40 sommerfe 2811:
2812: if (DEBUG(JOB))
1.139 christos 2813: fprintf(debug_file, "(%d) aborting %d, deposit token %c\n",
2814: getpid(), aborting, JOB_TOKENS[aborting]);
1.165 christos 2815: while (write(tokenWaitJob.outPipe, &tok, 1) == -1 && errno == EAGAIN)
2816: continue;
1.40 sommerfe 2817: }
2818:
2819: /*-
2820: *-----------------------------------------------------------------------
2821: * Job_ServerStartTokenAdd --
2822: * Prep the job token pipe in the root make process.
2823: *
2824: *-----------------------------------------------------------------------
2825: */
2826:
1.72 wiz 2827: void
1.122 dsl 2828: Job_ServerStart(int max_tokens, int jp_0, int jp_1)
1.40 sommerfe 2829: {
1.122 dsl 2830: int i;
1.40 sommerfe 2831: char jobarg[64];
2832:
1.122 dsl 2833: if (jp_0 >= 0 && jp_1 >= 0) {
2834: /* Pipe passed in from parent */
2835: tokenWaitJob.inPipe = jp_0;
2836: tokenWaitJob.outPipe = jp_1;
1.173 sjg 2837: (void)fcntl(jp_0, F_SETFD, 1);
2838: (void)fcntl(jp_1, F_SETFD, 1);
1.122 dsl 2839: return;
1.100 dsl 2840: }
2841:
1.122 dsl 2842: JobCreatePipe(&tokenWaitJob, 15);
1.40 sommerfe 2843:
1.122 dsl 2844: snprintf(jobarg, sizeof(jobarg), "%d,%d",
2845: tokenWaitJob.inPipe, tokenWaitJob.outPipe);
1.40 sommerfe 2846:
2847: Var_Append(MAKEFLAGS, "-J", VAR_GLOBAL);
2848: Var_Append(MAKEFLAGS, jobarg, VAR_GLOBAL);
1.101 dsl 2849:
1.40 sommerfe 2850: /*
1.122 dsl 2851: * Preload the job pipe with one token per job, save the one
1.40 sommerfe 2852: * "extra" token for the primary job.
2853: *
1.122 dsl 2854: * XXX should clip maxJobs against PIPE_BUF -- if max_tokens is
1.40 sommerfe 2855: * larger than the write buffer size of the pipe, we will
2856: * deadlock here.
2857: */
1.122 dsl 2858: for (i = 1; i < max_tokens; i++)
1.40 sommerfe 2859: JobTokenAdd();
2860: }
2861:
2862: /*-
2863: *-----------------------------------------------------------------------
2864: * Job_TokenReturn --
2865: * Return a withdrawn token to the pool.
2866: *
2867: *-----------------------------------------------------------------------
2868: */
2869:
2870: void
1.72 wiz 2871: Job_TokenReturn(void)
1.40 sommerfe 2872: {
1.44 sommerfe 2873: jobTokensRunning--;
2874: if (jobTokensRunning < 0)
1.40 sommerfe 2875: Punt("token botch");
1.102 dsl 2876: if (jobTokensRunning || JOB_TOKENS[aborting] != '+')
1.101 dsl 2877: JobTokenAdd();
1.40 sommerfe 2878: }
2879:
2880: /*-
2881: *-----------------------------------------------------------------------
2882: * Job_TokenWithdraw --
2883: * Attempt to withdraw a token from the pool.
2884: *
2885: * Results:
2886: * Returns TRUE if a token was withdrawn, and FALSE if the pool
2887: * is currently empty.
2888: *
2889: * Side Effects:
2890: * If pool is empty, set wantToken so that we wake up
2891: * when a token is released.
2892: *
2893: *-----------------------------------------------------------------------
2894: */
2895:
2896:
2897: Boolean
1.72 wiz 2898: Job_TokenWithdraw(void)
1.40 sommerfe 2899: {
1.101 dsl 2900: char tok, tok1;
1.40 sommerfe 2901: int count;
2902:
1.120 dsl 2903: wantToken = 0;
1.101 dsl 2904: if (DEBUG(JOB))
1.139 christos 2905: fprintf(debug_file, "Job_TokenWithdraw(%d): aborting %d, running %d\n",
2906: getpid(), aborting, jobTokensRunning);
1.60 enami 2907:
1.111 dsl 2908: if (aborting || (jobTokensRunning >= maxJobs))
1.102 dsl 2909: return FALSE;
1.40 sommerfe 2910:
1.122 dsl 2911: count = read(tokenWaitJob.inPipe, &tok, 1);
1.40 sommerfe 2912: if (count == 0)
2913: Fatal("eof on job pipe!");
1.102 dsl 2914: if (count < 0 && jobTokensRunning != 0) {
1.40 sommerfe 2915: if (errno != EAGAIN) {
2916: Fatal("job pipe read: %s", strerror(errno));
2917: }
2918: if (DEBUG(JOB))
1.139 christos 2919: fprintf(debug_file, "(%d) blocked for token\n", getpid());
1.120 dsl 2920: wantToken = 1;
1.40 sommerfe 2921: return FALSE;
2922: }
1.102 dsl 2923:
2924: if (count == 1 && tok != '+') {
1.120 dsl 2925: /* make being abvorted - remove any other job tokens */
1.101 dsl 2926: if (DEBUG(JOB))
1.139 christos 2927: fprintf(debug_file, "(%d) aborted by token %c\n", getpid(), tok);
1.122 dsl 2928: while (read(tokenWaitJob.inPipe, &tok1, 1) == 1)
1.101 dsl 2929: continue;
2930: /* And put the stopper back */
1.165 christos 2931: while (write(tokenWaitJob.outPipe, &tok, 1) == -1 && errno == EAGAIN)
2932: continue;
1.102 dsl 2933: Fatal("A failure has been detected in another branch of the parallel make");
1.101 dsl 2934: }
1.102 dsl 2935:
2936: if (count == 1 && jobTokensRunning == 0)
2937: /* We didn't want the token really */
1.165 christos 2938: while (write(tokenWaitJob.outPipe, &tok, 1) == -1 && errno == EAGAIN)
2939: continue;
1.102 dsl 2940:
1.44 sommerfe 2941: jobTokensRunning++;
1.40 sommerfe 2942: if (DEBUG(JOB))
1.139 christos 2943: fprintf(debug_file, "(%d) withdrew token\n", getpid());
1.40 sommerfe 2944: return TRUE;
1.41 sommerfe 2945: }
2946:
1.172 christos 2947: /*-
2948: *-----------------------------------------------------------------------
2949: * Job_RunTarget --
2950: * Run the named target if found. If a filename is specified, then
2951: * set that to the sources.
2952: *
2953: * Results:
2954: * None
2955: *
2956: * Side Effects:
2957: * exits if the target fails.
2958: *
2959: *-----------------------------------------------------------------------
2960: */
2961: Boolean
2962: Job_RunTarget(const char *target, const char *fname) {
2963: GNode *gn = Targ_FindNode(target, TARG_NOCREATE);
2964:
2965: if (gn == NULL)
2966: return FALSE;
2967:
2968: if (fname)
2969: Var_Set(ALLSRC, fname, gn, 0);
2970:
2971: JobRun(gn);
2972: if (gn->made == ERROR) {
2973: PrintOnError(gn, "\n\nStop.");
2974: exit(1);
2975: }
2976: return TRUE;
2977: }
2978:
1.73 gson 2979: #ifdef USE_SELECT
2980: int
2981: emul_poll(struct pollfd *fd, int nfd, int timeout)
2982: {
2983: fd_set rfds, wfds;
2984: int i, maxfd, nselect, npoll;
2985: struct timeval tv, *tvp;
2986: long usecs;
2987:
2988: FD_ZERO(&rfds);
2989: FD_ZERO(&wfds);
2990:
2991: maxfd = -1;
2992: for (i = 0; i < nfd; i++) {
2993: fd[i].revents = 0;
2994:
2995: if (fd[i].events & POLLIN)
2996: FD_SET(fd[i].fd, &rfds);
2997:
2998: if (fd[i].events & POLLOUT)
2999: FD_SET(fd[i].fd, &wfds);
3000:
3001: if (fd[i].fd > maxfd)
3002: maxfd = fd[i].fd;
3003: }
3004:
3005: if (maxfd >= FD_SETSIZE) {
3006: Punt("Ran out of fd_set slots; "
3007: "recompile with a larger FD_SETSIZE.");
3008: }
3009:
3010: if (timeout < 0) {
3011: tvp = NULL;
3012: } else {
3013: usecs = timeout * 1000;
3014: tv.tv_sec = usecs / 1000000;
3015: tv.tv_usec = usecs % 1000000;
3016: tvp = &tv;
3017: }
3018:
3019: nselect = select(maxfd + 1, &rfds, &wfds, 0, tvp);
3020:
3021: if (nselect <= 0)
3022: return nselect;
3023:
3024: npoll = 0;
3025: for (i = 0; i < nfd; i++) {
3026: if (FD_ISSET(fd[i].fd, &rfds))
3027: fd[i].revents |= POLLIN;
3028:
3029: if (FD_ISSET(fd[i].fd, &wfds))
3030: fd[i].revents |= POLLOUT;
3031:
3032: if (fd[i].revents)
3033: npoll++;
3034: }
3035:
3036: return npoll;
3037: }
3038: #endif /* USE_SELECT */
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