2 * Copyright (c) 1988, 1989, 1990, 1993
3 * The Regents of the University of California. All rights reserved.
4 * Copyright (c) 1988, 1989 by Adam de Boor
5 * Copyright (c) 1989 by Berkeley Softworks
8 * This code is derived from software contributed to Berkeley by
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 * 3. All advertising materials mentioning features or use of this software
20 * must display the following acknowledgement:
21 * This product includes software developed by the University of
22 * California, Berkeley and its contributors.
23 * 4. Neither the name of the University nor the names of its contributors
24 * may be used to endorse or promote products derived from this software
25 * without specific prior written permission.
27 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
28 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
29 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
30 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
31 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
32 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
33 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
34 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
35 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
36 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
39 * @(#)job.c 8.2 (Berkeley) 3/19/94
40 * $FreeBSD: src/usr.bin/make/job.c,v 1.17.2.2 2001/02/13 03:13:57 will Exp $
41 * $DragonFly: src/usr.bin/make/job.c,v 1.19 2004/11/24 07:24:17 dillon Exp $
50 * handle the creation etc. of our child processes.
53 * Job_Make Start the creation of the given target.
55 * Job_CatchChildren Check for and handle the termination of any
56 * children. This must be called reasonably
57 * frequently to keep the whole make going at
58 * a decent clip, since job table entries aren't
59 * removed until their process is caught this way.
60 * Its single argument is TRUE if the function
61 * should block waiting for a child to terminate.
63 * Job_CatchOutput Print any output our children have produced.
64 * Should also be called fairly frequently to
65 * keep the user informed of what's going on.
66 * If no output is waiting, it will block for
67 * a time given by the SEL_* constants, below,
68 * or until output is ready.
70 * Job_Init Called to intialize this module. in addition,
71 * any commands attached to the .BEGIN target
72 * are executed before this function returns.
73 * Hence, the makefile must have been parsed
74 * before this function is called.
76 * Job_Full Return TRUE if the job table is filled.
78 * Job_Empty Return TRUE if the job table is completely
81 * Job_ParseShell Given the line following a .SHELL target, parse
82 * the line as a shell specification. Returns
83 * FAILURE if the spec was incorrect.
85 * Job_Finish Perform any final processing which needs doing.
86 * This includes the execution of any commands
87 * which have been/were attached to the .END
88 * target. It should only be called when the
91 * Job_AbortAll Abort all currently running jobs. It doesn't
92 * handle output or do anything for the jobs,
93 * just kills them. It should only be called in
94 * an emergency, as it were.
96 * Job_CheckCommands Verify that the commands for a target are
97 * ok. Provide them if necessary and possible.
99 * Job_Touch Update a target without really updating it.
101 * Job_Wait Wait for all currently-running jobs to finish.
104 #include <sys/types.h>
105 #include <sys/stat.h>
106 #include <sys/file.h>
107 #include <sys/time.h>
109 #include <sys/event.h>
111 #include <sys/wait.h>
124 #include "pathnames.h"
129 # define STATIC static
133 * error handling variables
135 static int errors = 0; /* number of errors reported */
136 static int aborting = 0; /* why is the make aborting? */
137 #define ABORT_ERROR 1 /* Because of an error */
138 #define ABORT_INTERRUPT 2 /* Because it was interrupted */
139 #define ABORT_WAIT 3 /* Waiting for jobs to finish */
142 * XXX: Avoid SunOS bug... FILENO() is fp->_file, and file
143 * is a char! So when we go above 127 we turn negative!
145 #define FILENO(a) ((unsigned) fileno(a))
148 * post-make command processing. The node postCommands is really just the
149 * .END target but we keep it around to avoid having to search for it
152 static GNode *postCommands; /* node containing commands to execute when
153 * everything else is done */
154 static int numCommands; /* The number of commands actually printed
155 * for a target. Should this number be
156 * 0, no shell will be executed. */
159 * Return values from JobStart.
161 #define JOB_RUNNING 0 /* Job is running */
162 #define JOB_ERROR 1 /* Error in starting the job */
163 #define JOB_FINISHED 2 /* The job is already finished */
164 #define JOB_STOPPED 3 /* The job is stopped */
167 * tfile is used to build temp file names to store shell commands to
170 static char tfile[sizeof(TMPPAT)];
174 * Descriptions for various shells.
176 static Shell shells[] = {
178 * CSH description. The csh can do echo control by playing
179 * with the setting of the 'echo' shell variable. Sadly,
180 * however, it is unable to do error control nicely.
184 TRUE, "unset verbose", "set verbose", "unset verbose", 10,
185 FALSE, "echo \"%s\"\n", "csh -c \"%s || exit 0\"",
189 * SH description. Echo control is also possible and, under
190 * sun UNIX anyway, one can even control error checking.
194 TRUE, "set -", "set -v", "set -", 5,
195 TRUE, "set -e", "set +e",
196 #ifdef OLDBOURNESHELL
197 FALSE, "echo \"%s\"\n", "sh -c '%s || exit 0'\n",
206 FALSE, (char *) 0, (char *) 0, (char *) 0, 0,
207 FALSE, (char *) 0, (char *) 0,
208 (char *) 0, (char *) 0,
211 static Shell *commandShell = &shells[DEFSHELL];/* this is the shell to
213 * commands in the Makefile.
215 * Job_ParseShell function */
216 static char *shellPath = NULL, /* full pathname of
217 * executable image */
218 *shellName; /* last component of shell */
221 static int maxJobs; /* The most children we can run at once */
222 static int maxLocal; /* The most local ones we can have */
223 STATIC int nJobs; /* The number of children currently running */
224 STATIC int nLocal; /* The number of local children */
225 STATIC Lst jobs; /* The structures that describe them */
226 STATIC Boolean jobFull; /* Flag to tell when the job table is full. It
227 * is set TRUE when (1) the total number of
228 * running jobs equals the maximum allowed or
229 * (2) a job can only be run locally, but
230 * nLocal equals maxLocal */
231 #ifndef RMT_WILL_WATCH
233 static int kqfd; /* File descriptor obtained by kqueue() */
235 static fd_set outputs; /* Set of descriptors of pipes connected to
236 * the output channels of children */
240 STATIC GNode *lastNode; /* The node for which output was most recently
242 STATIC char *targFmt; /* Format string to use to head output from a
243 * job when it's not the most-recent job heard
247 # define TARG_FMT "--- %s at %s ---\n" /* Default format */
248 # define MESSAGE(fp, gn) \
249 (void) fprintf(fp, targFmt, gn->name, gn->rem.hname);
251 # define TARG_FMT "--- %s ---\n" /* Default format */
252 # define MESSAGE(fp, gn) \
253 (void) fprintf(fp, targFmt, gn->name);
257 * When JobStart attempts to run a job remotely but can't, and isn't allowed
258 * to run the job locally, or when Job_CatchChildren detects a job that has
259 * been migrated home, the job is placed on the stoppedJobs queue to be run
260 * when the next job finishes.
262 STATIC Lst stoppedJobs; /* Lst of Job structures describing
263 * jobs that were stopped due to concurrency
264 * limits or migration home */
267 #if defined(USE_PGRP) && defined(SYSV)
268 # define KILL(pid, sig) killpg(-(pid), (sig))
270 # if defined(USE_PGRP)
271 # define KILL(pid, sig) killpg((pid), (sig))
273 # define KILL(pid, sig) kill((pid), (sig))
278 * Grmpf... There is no way to set bits of the wait structure
279 * anymore with the stupid W*() macros. I liked the union wait
280 * stuff much more. So, we devise our own macros... This is
281 * really ugly, use dramamine sparingly. You have been warned.
283 #define W_SETMASKED(st, val, fun) \
286 int mask = fun(sh); \
288 for (sh = 0; ((mask >> sh) & 1) == 0; sh++) \
290 *(st) = (*(st) & ~mask) | ((val) << sh); \
293 #define W_SETTERMSIG(st, val) W_SETMASKED(st, val, WTERMSIG)
294 #define W_SETEXITSTATUS(st, val) W_SETMASKED(st, val, WEXITSTATUS)
297 static int JobCondPassSig(void *, void *);
298 static void JobPassSig(int);
299 static int JobCmpPid(void *, void *);
300 static int JobPrintCommand(void *, void *);
301 static int JobSaveCommand(void *, void *);
302 static void JobClose(Job *);
304 static int JobCmpRmtID(Job *, int);
305 # ifdef RMT_WILL_WATCH
306 static void JobLocalInput(int, Job *);
309 static void JobFinish(Job *, int *);
310 static void JobExec(Job *, char **);
312 static void JobMakeArgv(Job *, char **);
313 static void JobRestart(Job *);
314 static int JobStart(GNode *, int, Job *);
315 static char *JobOutput(Job *, char *, char *, int);
316 static void JobDoOutput(Job *, Boolean);
317 static Shell *JobMatchShell(char *);
318 static void JobInterrupt(int, int);
319 static void JobRestartJobs(void);
322 *-----------------------------------------------------------------------
324 * Pass a signal to a job if the job is remote or if USE_PGRP
331 * None, except the job may bite it.
333 *-----------------------------------------------------------------------
336 JobCondPassSig(void *jobp, void *signop)
338 Job *job = (Job *) jobp;
339 int signo = *(int *) signop;
340 #ifdef RMT_WANTS_SIGNALS
341 if (job->flags & JOB_REMOTE) {
342 (void) Rmt_Signal(job, signo);
344 KILL(job->pid, signo);
348 * Assume that sending the signal to job->pid will signal any remote
351 DEBUGF(JOB, ("JobCondPassSig passing signal %d to child %d.\n", signo, job->pid));
352 KILL(job->pid, signo);
358 *-----------------------------------------------------------------------
360 * Pass a signal on to all remote jobs and to all local jobs if
361 * USE_PGRP is defined, then die ourselves.
367 * We die by the same signal.
369 *-----------------------------------------------------------------------
372 JobPassSig(int signo)
374 sigset_t nmask, omask;
375 struct sigaction act;
377 DEBUGF(JOB, ("JobPassSig(%d) called.\n", signo));
378 Lst_ForEach(jobs, JobCondPassSig, (void *) &signo);
381 * Deal with proper cleanup based on the signal received. We only run
382 * the .INTERRUPT target if the signal was in fact an interrupt. The other
383 * three termination signals are more of a "get out *now*" command.
385 if (signo == SIGINT) {
386 JobInterrupt(TRUE, signo);
387 } else if ((signo == SIGHUP) || (signo == SIGTERM) || (signo == SIGQUIT)) {
388 JobInterrupt(FALSE, signo);
392 * Leave gracefully if SIGQUIT, rather than core dumping.
394 if (signo == SIGQUIT) {
399 * Send ourselves the signal now we've given the message to everyone else.
400 * Note we block everything else possible while we're getting the signal.
401 * This ensures that all our jobs get continued when we wake up before
402 * we take any other signal.
405 sigaddset(&nmask, signo);
406 sigprocmask(SIG_SETMASK, &nmask, &omask);
407 act.sa_handler = SIG_DFL;
408 sigemptyset(&act.sa_mask);
410 sigaction(signo, &act, NULL);
412 DEBUGF(JOB, ("JobPassSig passing signal to self, mask = %x.\n", ~0 & ~(1 << (signo-1))));
413 (void) signal(signo, SIG_DFL);
415 (void) KILL(getpid(), signo);
418 Lst_ForEach(jobs, JobCondPassSig, (void *) &signo);
420 (void) sigprocmask(SIG_SETMASK, &omask, NULL);
421 sigprocmask(SIG_SETMASK, &omask, NULL);
422 act.sa_handler = JobPassSig;
423 sigaction(signo, &act, NULL);
427 *-----------------------------------------------------------------------
429 * Compare the pid of the job with the given pid and return 0 if they
430 * are equal. This function is called from Job_CatchChildren via
431 * Lst_Find to find the job descriptor of the finished job.
434 * 0 if the pid's match
438 *-----------------------------------------------------------------------
441 JobCmpPid(void *job, void *pid)
443 return *(int *) pid - ((Job *) job)->pid;
448 *-----------------------------------------------------------------------
450 * Compare the rmtID of the job with the given rmtID and return 0 if they
454 * 0 if the rmtID's match
458 *-----------------------------------------------------------------------
461 JobCmpRmtID(void *job, void *rmtID)
463 return(*(int *) rmtID - *(int *) job->rmtID);
468 *-----------------------------------------------------------------------
470 * Put out another command for the given job. If the command starts
471 * with an @ or a - we process it specially. In the former case,
472 * so long as the -s and -n flags weren't given to make, we stick
473 * a shell-specific echoOff command in the script. In the latter,
474 * we ignore errors for the entire job, unless the shell has error
476 * If the command is just "..." we take all future commands for this
477 * job to be commands to be executed once the entire graph has been
478 * made and return non-zero to signal that the end of the commands
479 * was reached. These commands are later attached to the postCommands
480 * node and executed by Job_Finish when all things are done.
481 * This function is called from JobStart via Lst_ForEach.
484 * Always 0, unless the command was "..."
487 * If the command begins with a '-' and the shell has no error control,
488 * the JOB_IGNERR flag is set in the job descriptor.
489 * If the command is "..." and we're not ignoring such things,
490 * tailCmds is set to the successor node of the cmd.
491 * numCommands is incremented if the command is actually printed.
492 *-----------------------------------------------------------------------
495 JobPrintCommand(void *cmdp, void *jobp)
497 Boolean noSpecials; /* true if we shouldn't worry about
498 * inserting special commands into
499 * the input stream. */
500 Boolean shutUp = FALSE; /* true if we put a no echo command
501 * into the command file */
502 Boolean errOff = FALSE; /* true if we turned error checking
503 * off before printing the command
504 * and need to turn it back on */
505 char *cmdTemplate; /* Template to use when printing the
507 char *cmdStart; /* Start of expanded command */
508 LstNode cmdNode; /* Node for replacing the command */
509 char *cmd = (char *) cmdp;
510 Job *job = (Job *) jobp;
512 noSpecials = (noExecute && !(job->node->type & OP_MAKE));
514 if (strcmp(cmd, "...") == 0) {
515 job->node->type |= OP_SAVE_CMDS;
516 if ((job->flags & JOB_IGNDOTS) == 0) {
517 job->tailCmds = Lst_Succ(Lst_Member(job->node->commands,
524 #define DBPRINTF(fmt, arg) \
525 DEBUGF(JOB, (fmt, arg)); \
526 (void) fprintf(job->cmdFILE, fmt, arg); \
527 (void) fflush(job->cmdFILE);
532 * For debugging, we replace each command with the result of expanding
533 * the variables in the command.
535 cmdNode = Lst_Member(job->node->commands, (void *)cmd);
536 cmdStart = cmd = Var_Subst(NULL, cmd, job->node, FALSE);
537 Lst_Replace(cmdNode, (void *)cmdStart);
539 cmdTemplate = "%s\n";
542 * Check for leading @' and -'s to control echoing and error checking.
544 while (*cmd == '@' || *cmd == '-') {
546 shutUp = DEBUG(LOUD) ? FALSE : TRUE;
553 while (isspace((unsigned char) *cmd))
557 if (!(job->flags & JOB_SILENT) && !noSpecials &&
558 commandShell->hasEchoCtl) {
559 DBPRINTF("%s\n", commandShell->echoOff);
566 if ( !(job->flags & JOB_IGNERR) && !noSpecials) {
567 if (commandShell->hasErrCtl) {
569 * we don't want the error-control commands showing
570 * up either, so we turn off echoing while executing
571 * them. We could put another field in the shell
572 * structure to tell JobDoOutput to look for this
573 * string too, but why make it any more complex than
576 if (!(job->flags & JOB_SILENT) && !shutUp &&
577 commandShell->hasEchoCtl) {
578 DBPRINTF("%s\n", commandShell->echoOff);
579 DBPRINTF("%s\n", commandShell->ignErr);
580 DBPRINTF("%s\n", commandShell->echoOn);
582 DBPRINTF("%s\n", commandShell->ignErr);
584 } else if (commandShell->ignErr &&
585 (*commandShell->ignErr != '\0'))
588 * The shell has no error control, so we need to be
589 * weird to get it to ignore any errors from the command.
590 * If echoing is turned on, we turn it off and use the
591 * errCheck template to echo the command. Leave echoing
592 * off so the user doesn't see the weirdness we go through
593 * to ignore errors. Set cmdTemplate to use the weirdness
594 * instead of the simple "%s\n" template.
596 if (!(job->flags & JOB_SILENT) && !shutUp &&
597 commandShell->hasEchoCtl) {
598 DBPRINTF("%s\n", commandShell->echoOff);
599 DBPRINTF(commandShell->errCheck, cmd);
602 cmdTemplate = commandShell->ignErr;
604 * The error ignoration (hee hee) is already taken care
605 * of by the ignErr template, so pretend error checking
617 DBPRINTF(cmdTemplate, cmd);
621 * If echoing is already off, there's no point in issuing the
622 * echoOff command. Otherwise we issue it and pretend it was on
623 * for the whole command...
625 if (!shutUp && !(job->flags & JOB_SILENT) && commandShell->hasEchoCtl){
626 DBPRINTF("%s\n", commandShell->echoOff);
629 DBPRINTF("%s\n", commandShell->errCheck);
632 DBPRINTF("%s\n", commandShell->echoOn);
638 *-----------------------------------------------------------------------
640 * Save a command to be executed when everything else is done.
641 * Callback function for JobFinish...
647 * The command is tacked onto the end of postCommands's commands list.
649 *-----------------------------------------------------------------------
652 JobSaveCommand(void *cmd, void *gn)
654 cmd = (void *) Var_Subst(NULL, (char *) cmd, (GNode *) gn, FALSE);
655 (void) Lst_AtEnd(postCommands->commands, cmd);
661 *-----------------------------------------------------------------------
663 * Called to close both input and output pipes when a job is finished.
669 * The file descriptors associated with the job are closed.
671 *-----------------------------------------------------------------------
677 #ifdef RMT_WILL_WATCH
678 Rmt_Ignore(job->inPipe);
679 #elif !defined(USE_KQUEUE)
680 FD_CLR(job->inPipe, &outputs);
682 if (job->outPipe != job->inPipe) {
683 (void) close(job->outPipe);
685 JobDoOutput(job, TRUE);
686 (void) close(job->inPipe);
688 (void) close(job->outFd);
689 JobDoOutput(job, TRUE);
694 *-----------------------------------------------------------------------
696 * Do final processing for the given job including updating
697 * parents and starting new jobs as available/necessary. Note
698 * that we pay no attention to the JOB_IGNERR flag here.
699 * This is because when we're called because of a noexecute flag
700 * or something, jstat.w_status is 0 and when called from
701 * Job_CatchChildren, the status is zeroed if it s/b ignored.
707 * Some nodes may be put on the toBeMade queue.
708 * Final commands for the job are placed on postCommands.
710 * If we got an error and are aborting (aborting == ABORT_ERROR) and
711 * the job list is now empty, we are done for the day.
712 * If we recognized an error (errors !=0), we set the aborting flag
713 * to ABORT_ERROR so no more jobs will be started.
714 *-----------------------------------------------------------------------
718 JobFinish(Job *job, int *status)
722 if ((WIFEXITED(*status) &&
723 (((WEXITSTATUS(*status) != 0) && !(job->flags & JOB_IGNERR)))) ||
724 (WIFSIGNALED(*status) && (WTERMSIG(*status) != SIGCONT)))
727 * If it exited non-zero and either we're doing things our
728 * way or we're not ignoring errors, the job is finished.
729 * Similarly, if the shell died because of a signal
730 * the job is also finished. In these
731 * cases, finish out the job's output before printing the exit
735 KILL(job->pid, SIGCONT);
738 if (job->cmdFILE != NULL && job->cmdFILE != stdout) {
739 (void) fclose(job->cmdFILE);
743 if (job->flags & JOB_REMOTE)
744 Rmt_Done(job->rmtID, job->node);
746 } else if (WIFEXITED(*status)) {
748 * Deal with ignored errors in -B mode. We need to print a message
749 * telling of the ignored error as well as setting status.w_status
750 * to 0 so the next command gets run. To do this, we set done to be
751 * TRUE if in -B mode and the job exited non-zero.
753 done = WEXITSTATUS(*status) != 0;
755 * Old comment said: "Note we don't
756 * want to close down any of the streams until we know we're at the
758 * But we do. Otherwise when are we going to print the rest of the
763 if (job->flags & JOB_REMOTE)
764 Rmt_Done(job->rmtID, job->node);
768 * No need to close things down or anything.
774 WIFSTOPPED(*status) ||
775 (WIFSIGNALED(*status) && (WTERMSIG(*status) == SIGCONT)) ||
780 if (compatMake && !usePipes && (job->flags & JOB_IGNERR)) {
782 * If output is going to a file and this job is ignoring
783 * errors, arrange to have the exit status sent to the
784 * output file as well.
786 out = fdopen(job->outFd, "w");
788 Punt("Cannot fdopen");
793 if (WIFEXITED(*status)) {
794 DEBUGF(JOB, ("Process %d exited.\n", job->pid));
795 if (WEXITSTATUS(*status) != 0) {
796 if (usePipes && job->node != lastNode) {
797 MESSAGE(out, job->node);
798 lastNode = job->node;
800 (void) fprintf(out, "*** Error code %d%s\n",
801 WEXITSTATUS(*status),
802 (job->flags & JOB_IGNERR) ? "(ignored)" : "");
804 if (job->flags & JOB_IGNERR) {
807 } else if (DEBUG(JOB)) {
808 if (usePipes && job->node != lastNode) {
809 MESSAGE(out, job->node);
810 lastNode = job->node;
812 (void) fprintf(out, "*** Completed successfully\n");
814 } else if (WIFSTOPPED(*status)) {
815 DEBUGF(JOB, ("Process %d stopped.\n", job->pid));
816 if (usePipes && job->node != lastNode) {
817 MESSAGE(out, job->node);
818 lastNode = job->node;
820 if (!(job->flags & JOB_REMIGRATE)) {
821 (void) fprintf(out, "*** Stopped -- signal %d\n",
824 job->flags |= JOB_RESUME;
825 (void)Lst_AtEnd(stoppedJobs, (void *)job);
827 if (job->flags & JOB_REMIGRATE)
832 } else if (WTERMSIG(*status) == SIGCONT) {
834 * If the beastie has continued, shift the Job from the stopped
835 * list to the running one (or re-stop it if concurrency is
836 * exceeded) and go and get another child.
838 if (job->flags & (JOB_RESUME|JOB_REMIGRATE|JOB_RESTART)) {
839 if (usePipes && job->node != lastNode) {
840 MESSAGE(out, job->node);
841 lastNode = job->node;
843 (void) fprintf(out, "*** Continued\n");
845 if (!(job->flags & JOB_CONTINUING)) {
846 DEBUGF(JOB, ("Warning: process %d was not continuing.\n", job->pid));
849 * We don't really want to restart a job from scratch just
850 * because it continued, especially not without killing the
851 * continuing process! That's why this is ifdef'ed out.
857 job->flags &= ~JOB_CONTINUING;
858 Lst_AtEnd(jobs, (void *)job);
860 if (!(job->flags & JOB_REMOTE)) {
861 DEBUGF(JOB, ("Process %d is continuing locally.\n", job->pid));
864 if (nJobs == maxJobs) {
866 DEBUGF(JOB, ("Job queue is full.\n"));
871 if (usePipes && job->node != lastNode) {
872 MESSAGE(out, job->node);
873 lastNode = job->node;
875 (void) fprintf(out, "*** Signal %d\n", WTERMSIG(*status));
882 * Now handle the -B-mode stuff. If the beast still isn't finished,
883 * try and restart the job on the next command. If JobStart says it's
884 * ok, it's ok. If there's an error, this puppy is done.
886 if (compatMake && (WIFEXITED(*status) &&
887 !Lst_IsAtEnd(job->node->commands))) {
888 switch (JobStart(job->node, job->flags & JOB_IGNDOTS, job)) {
894 W_SETEXITSTATUS(status, 1);
898 * If we got back a JOB_FINISHED code, JobStart has already
899 * called Make_Update and freed the job descriptor. We set
900 * done to false here to avoid fake cycles and double frees.
901 * JobStart needs to do the update so we can proceed up the
902 * graph when given the -n flag..
915 (aborting != ABORT_ERROR) &&
916 (aborting != ABORT_INTERRUPT) &&
920 * As long as we aren't aborting and the job didn't return a non-zero
921 * status that we shouldn't ignore, we call Make_Update to update
922 * the parents. In addition, any saved commands for the node are placed
923 * on the .END target.
925 if (job->tailCmds != NULL) {
926 Lst_ForEachFrom(job->node->commands, job->tailCmds,
930 job->node->made = MADE;
931 Make_Update(job->node);
933 } else if (*status != 0) {
941 * Set aborting if any error.
943 if (errors && !keepgoing && (aborting != ABORT_INTERRUPT)) {
945 * If we found any errors in this batch of children and the -k flag
946 * wasn't given, we set the aborting flag so no more jobs get
949 aborting = ABORT_ERROR;
952 if ((aborting == ABORT_ERROR) && Job_Empty())
954 * If we are aborting and the job table is now empty, we finish.
960 *-----------------------------------------------------------------------
962 * Touch the given target. Called by JobStart when the -t flag was
963 * given. Prints messages unless told to be silent.
969 * The data modification of the file is changed. In addition, if the
970 * file did not exist, it is created.
971 *-----------------------------------------------------------------------
974 Job_Touch(GNode *gn, Boolean silent)
976 int streamID; /* ID of stream opened to do the touch */
977 struct utimbuf times; /* Times for utime() call */
979 if (gn->type & (OP_JOIN|OP_USE|OP_EXEC|OP_OPTIONAL)) {
981 * .JOIN, .USE, .ZEROTIME and .OPTIONAL targets are "virtual" targets
982 * and, as such, shouldn't really be created.
988 (void) fprintf(stdout, "touch %s\n", gn->name);
989 (void) fflush(stdout);
996 if (gn->type & OP_ARCHV) {
998 } else if (gn->type & OP_LIB) {
1001 char *file = gn->path ? gn->path : gn->name;
1003 times.actime = times.modtime = now;
1004 if (utime(file, ×) < 0){
1005 streamID = open(file, O_RDWR | O_CREAT, 0666);
1007 if (streamID >= 0) {
1011 * Read and write a byte to the file to change the
1012 * modification time, then close the file.
1014 if (read(streamID, &c, 1) == 1) {
1015 (void) lseek(streamID, (off_t)0, SEEK_SET);
1016 (void) write(streamID, &c, 1);
1019 (void) close(streamID);
1021 (void) fprintf(stdout, "*** couldn't touch %s: %s",
1022 file, strerror(errno));
1023 (void) fflush(stdout);
1030 *-----------------------------------------------------------------------
1031 * Job_CheckCommands --
1032 * Make sure the given node has all the commands it needs.
1035 * TRUE if the commands list is/was ok.
1038 * The node will have commands from the .DEFAULT rule added to it
1040 *-----------------------------------------------------------------------
1043 Job_CheckCommands(GNode *gn, void (*abortProc)(const char *, ...))
1045 if (OP_NOP(gn->type) && Lst_IsEmpty(gn->commands) &&
1046 (gn->type & OP_LIB) == 0) {
1048 * No commands. Look for .DEFAULT rule from which we might infer
1051 if ((DEFAULT != NULL) && !Lst_IsEmpty(DEFAULT->commands)) {
1054 * Make only looks for a .DEFAULT if the node was never the
1055 * target of an operator, so that's what we do too. If
1056 * a .DEFAULT was given, we substitute its commands for gn's
1057 * commands and set the IMPSRC variable to be the target's name
1058 * The DEFAULT node acts like a transformation rule, in that
1059 * gn also inherits any attributes or sources attached to
1062 Make_HandleUse(DEFAULT, gn);
1063 Var_Set(IMPSRC, Var_Value(TARGET, gn, &p1), gn);
1065 } else if (Dir_MTime(gn) == 0) {
1067 * The node wasn't the target of an operator we have no .DEFAULT
1068 * rule to go on and the target doesn't already exist. There's
1069 * nothing more we can do for this branch. If the -k flag wasn't
1070 * given, we stop in our tracks, otherwise we just don't update
1071 * this node's parents so they never get examined.
1073 static const char msg[] = "make: don't know how to make";
1075 if (gn->type & OP_OPTIONAL) {
1076 (void) fprintf(stdout, "%s %s(ignored)\n", msg, gn->name);
1077 (void) fflush(stdout);
1078 } else if (keepgoing) {
1079 (void) fprintf(stdout, "%s %s(continuing)\n", msg, gn->name);
1080 (void) fflush(stdout);
1084 if (strcmp(gn->name,"love") == 0)
1085 (*abortProc)("Not war.");
1088 (*abortProc)("%s %s. Stop", msg, gn->name);
1095 #ifdef RMT_WILL_WATCH
1097 *-----------------------------------------------------------------------
1099 * Handle a pipe becoming readable. Callback function for Rmt_Watch
1105 * JobDoOutput is called.
1107 *-----------------------------------------------------------------------
1111 JobLocalInput(int stream, Job *job)
1113 JobDoOutput(job, FALSE);
1115 #endif /* RMT_WILL_WATCH */
1118 *-----------------------------------------------------------------------
1120 * Execute the shell for the given job. Called from JobStart and
1127 * A shell is executed, outputs is altered and the Job structure added
1130 *-----------------------------------------------------------------------
1133 JobExec(Job *job, char **argv)
1135 int cpid; /* ID of new child */
1140 DEBUGF(JOB, ("Running %s %sly\n", job->node->name,
1141 job->flags&JOB_REMOTE?"remote":"local"));
1142 DEBUGF(JOB, ("\tCommand: "));
1143 for (i = 0; argv[i] != NULL; i++) {
1144 DEBUGF(JOB, ("%s ", argv[i]));
1146 DEBUGF(JOB, ("\n"));
1150 * Some jobs produce no output and it's disconcerting to have
1151 * no feedback of their running (since they produce no output, the
1152 * banner with their name in it never appears). This is an attempt to
1153 * provide that feedback, even if nothing follows it.
1155 if ((lastNode != job->node) && (job->flags & JOB_FIRST) &&
1156 !(job->flags & JOB_SILENT)) {
1157 MESSAGE(stdout, job->node);
1158 lastNode = job->node;
1162 if (job->flags & JOB_REMOTE) {
1165 #endif /* RMT_NO_EXEC */
1167 if ((cpid = vfork()) == -1) {
1168 Punt("Cannot fork");
1169 } else if (cpid == 0) {
1172 * Must duplicate the input stream down to the child's input and
1173 * reset it to the beginning (again). Since the stream was marked
1174 * close-on-exec, we must clear that bit in the new input.
1176 if (dup2(FILENO(job->cmdFILE), 0) == -1)
1177 Punt("Cannot dup2: %s", strerror(errno));
1178 (void) fcntl(0, F_SETFD, 0);
1179 (void) lseek(0, (off_t)0, SEEK_SET);
1183 * Set up the child's output to be routed through the pipe
1184 * we've created for it.
1186 if (dup2(job->outPipe, 1) == -1)
1187 Punt("Cannot dup2: %s", strerror(errno));
1190 * We're capturing output in a file, so we duplicate the
1191 * descriptor to the temporary file into the standard
1194 if (dup2(job->outFd, 1) == -1)
1195 Punt("Cannot dup2: %s", strerror(errno));
1198 * The output channels are marked close on exec. This bit was
1199 * duplicated by the dup2 (on some systems), so we have to clear
1200 * it before routing the shell's error output to the same place as
1201 * its standard output.
1203 (void) fcntl(1, F_SETFD, 0);
1204 if (dup2(1, 2) == -1)
1205 Punt("Cannot dup2: %s", strerror(errno));
1209 * We want to switch the child into a different process family so
1210 * we can kill it and all its descendants in one fell swoop,
1211 * by killing its process family, but not commit suicide.
1216 (void) setpgid(0, getpid());
1218 #endif /* USE_PGRP */
1221 if (job->flags & JOB_REMOTE) {
1222 Rmt_Exec(shellPath, argv, FALSE);
1225 (void) execv(shellPath, argv);
1227 (void) write(STDERR_FILENO, "Could not execute shell\n",
1228 sizeof("Could not execute shell"));
1232 long omask = sigblock(sigmask(SIGCHLD));
1236 if (usePipes && (job->flags & JOB_FIRST) ) {
1238 * The first time a job is run for a node, we set the current
1239 * position in the buffer to the beginning and mark another
1240 * stream to watch in the outputs mask
1243 struct kevent kev[2];
1247 #ifdef RMT_WILL_WATCH
1248 Rmt_Watch(job->inPipe, JobLocalInput, job);
1249 #elif defined(USE_KQUEUE)
1250 EV_SET(&kev[0], job->inPipe, EVFILT_READ, EV_ADD, 0, 0, job);
1251 EV_SET(&kev[1], job->pid, EVFILT_PROC, EV_ADD | EV_ONESHOT,
1252 NOTE_EXIT, 0, NULL);
1253 if (kevent(kqfd, kev, 2, NULL, 0, NULL) != 0) {
1254 /* kevent() will fail if the job is already finished */
1255 if (errno != EINTR && errno != EBADF && errno != ESRCH)
1256 Punt("kevent: %s", strerror(errno));
1259 FD_SET(job->inPipe, &outputs);
1260 #endif /* RMT_WILL_WATCH */
1263 if (job->flags & JOB_REMOTE) {
1267 job->rmtID = Rmt_LastID(job->pid);
1272 * XXX: Used to not happen if REMOTE. Why?
1274 if (job->cmdFILE != NULL && job->cmdFILE != stdout) {
1275 (void) fclose(job->cmdFILE);
1276 job->cmdFILE = NULL;
1280 (void) sigsetmask(omask);
1288 * Now the job is actually running, add it to the table.
1291 (void) Lst_AtEnd(jobs, (void *)job);
1292 if (nJobs == maxJobs) {
1298 *-----------------------------------------------------------------------
1300 * Create the argv needed to execute the shell for a given job.
1307 *-----------------------------------------------------------------------
1310 JobMakeArgv(Job *job, char **argv)
1313 static char args[10]; /* For merged arguments */
1315 argv[0] = shellName;
1318 if ((commandShell->exit && (*commandShell->exit != '-')) ||
1319 (commandShell->echo && (*commandShell->echo != '-')))
1322 * At least one of the flags doesn't have a minus before it, so
1323 * merge them together. Have to do this because the *(&(@*#*&#$#
1324 * Bourne shell thinks its second argument is a file to source.
1325 * Grrrr. Note the ten-character limitation on the combined arguments.
1327 (void)sprintf(args, "-%s%s",
1328 ((job->flags & JOB_IGNERR) ? "" :
1329 (commandShell->exit ? commandShell->exit : "")),
1330 ((job->flags & JOB_SILENT) ? "" :
1331 (commandShell->echo ? commandShell->echo : "")));
1338 if (!(job->flags & JOB_IGNERR) && commandShell->exit) {
1339 argv[argc] = commandShell->exit;
1342 if (!(job->flags & JOB_SILENT) && commandShell->echo) {
1343 argv[argc] = commandShell->echo;
1351 *-----------------------------------------------------------------------
1353 * Restart a job that stopped for some reason.
1359 * jobFull will be set if the job couldn't be run.
1361 *-----------------------------------------------------------------------
1364 JobRestart(Job *job)
1370 if (job->flags & JOB_REMIGRATE) {
1373 verboseRemigrates ||
1376 (void) fprintf(stdout, "*** remigrating %x(%s)\n",
1377 job->pid, job->node->name);
1378 (void) fflush(stdout);
1382 if (!Rmt_ReExport(job->pid, job->node, &host)) {
1383 if (verboseRemigrates || DEBUG(JOB)) {
1384 (void) fprintf(stdout, "*** couldn't migrate...\n");
1385 (void) fflush(stdout);
1388 if (nLocal != maxLocal) {
1390 * Job cannot be remigrated, but there's room on the local
1391 * machine, so resume the job and note that another
1392 * local job has started.
1396 verboseRemigrates ||
1399 (void) fprintf(stdout, "*** resuming on local machine\n");
1400 (void) fflush(stdout);
1402 KILL(job->pid, SIGCONT);
1405 job->flags &= ~(JOB_REMIGRATE|JOB_RESUME|JOB_REMOTE);
1406 job->flags |= JOB_CONTINUING;
1408 job->flags &= ~(JOB_REMIGRATE|JOB_RESUME);
1412 * Job cannot be restarted. Mark the table as full and
1413 * place the job back on the list of stopped jobs.
1417 verboseRemigrates ||
1420 (void) fprintf(stdout, "*** holding\n");
1421 (void) fflush(stdout);
1423 (void)Lst_AtFront(stoppedJobs, (void *)job);
1425 DEBUGF(JOB, ("Job queue is full.\n"));
1431 * Clear out the remigrate and resume flags. Set the continuing
1432 * flag so we know later on that the process isn't exiting just
1433 * because of a signal.
1435 job->flags &= ~(JOB_REMIGRATE|JOB_RESUME);
1436 job->flags |= JOB_CONTINUING;
1441 (void)Lst_AtEnd(jobs, (void *)job);
1443 if (nJobs == maxJobs) {
1445 DEBUGF(JOB, ("Job queue is full.\n"));
1447 } else if (job->flags & JOB_RESTART) {
1449 * Set up the control arguments to the shell. This is based on the
1450 * flags set earlier for this job. If the JOB_IGNERR flag is clear,
1451 * the 'exit' flag of the commandShell is used to cause it to exit
1452 * upon receiving an error. If the JOB_SILENT flag is clear, the
1453 * 'echo' flag of the commandShell is used to get it to start echoing
1454 * as soon as it starts processing commands.
1458 JobMakeArgv(job, argv);
1460 DEBUGF(JOB, ("Restarting %s...", job->node->name));
1462 if ((job->node->type&OP_NOEXPORT) ||
1463 (nLocal < maxLocal && runLocalFirst)
1465 || !Rmt_Export(shellPath, argv, job)
1467 || !Rmt_Begin(shellPath, argv, job->node)
1471 if (((nLocal >= maxLocal) && !(job->flags & JOB_SPECIAL))) {
1473 * Can't be exported and not allowed to run locally -- put it
1474 * back on the hold queue and mark the table full
1476 DEBUGF(JOB, ("holding\n"));
1477 (void)Lst_AtFront(stoppedJobs, (void *)job);
1479 DEBUGF(JOB, ("Job queue is full.\n"));
1483 * Job may be run locally.
1485 DEBUGF(JOB, ("running locally\n"));
1486 job->flags &= ~JOB_REMOTE;
1492 * Can be exported. Hooray!
1494 DEBUGF(JOB, ("exporting\n"));
1495 job->flags |= JOB_REMOTE;
1501 * The job has stopped and needs to be restarted. Why it stopped,
1504 DEBUGF(JOB, ("Resuming %s...", job->node->name));
1505 if (((job->flags & JOB_REMOTE) ||
1506 (nLocal < maxLocal) ||
1508 (((job->flags & JOB_SPECIAL) &&
1509 (job->node->type & OP_NOEXPORT)) &&
1510 (maxLocal == 0))) &&
1512 ((job->flags & JOB_SPECIAL) &&
1513 (maxLocal == 0))) &&
1518 * If the job is remote, it's ok to resume it as long as the
1519 * maximum concurrency won't be exceeded. If it's local and
1520 * we haven't reached the local concurrency limit already (or the
1521 * job must be run locally and maxLocal is 0), it's also ok to
1527 #ifdef RMT_WANTS_SIGNALS
1528 if (job->flags & JOB_REMOTE) {
1529 error = !Rmt_Signal(job, SIGCONT);
1531 #endif /* RMT_WANTS_SIGNALS */
1532 error = (KILL(job->pid, SIGCONT) != 0);
1536 * Make sure the user knows we've continued the beast and
1537 * actually put the thing in the job table.
1539 job->flags |= JOB_CONTINUING;
1540 W_SETTERMSIG(&status, SIGCONT);
1541 JobFinish(job, &status);
1543 job->flags &= ~(JOB_RESUME|JOB_CONTINUING);
1544 DEBUGF(JOB, ("done\n"));
1546 Error("couldn't resume %s: %s",
1547 job->node->name, strerror(errno));
1549 W_SETEXITSTATUS(&status, 1);
1550 JobFinish(job, &status);
1554 * Job cannot be restarted. Mark the table as full and
1555 * place the job back on the list of stopped jobs.
1557 DEBUGF(JOB, ("table full\n"));
1558 (void) Lst_AtFront(stoppedJobs, (void *)job);
1560 DEBUGF(JOB, ("Job queue is full.\n"));
1566 *-----------------------------------------------------------------------
1568 * Start a target-creation process going for the target described
1569 * by the graph node gn.
1572 * JOB_ERROR if there was an error in the commands, JOB_FINISHED
1573 * if there isn't actually anything left to do for the job and
1574 * JOB_RUNNING if the job has been started.
1577 * A new Job node is created and added to the list of running
1578 * jobs. PMake is forked and a child shell created.
1579 *-----------------------------------------------------------------------
1582 JobStart(GNode *gn, int flags, Job *previous)
1584 Job *job; /* new job descriptor */
1585 char *argv[4]; /* Argument vector to shell */
1586 Boolean cmdsOK; /* true if the nodes commands were all right */
1587 Boolean local; /* Set true if the job was run locally */
1588 Boolean noExec; /* Set true if we decide not to run the job */
1589 int tfd; /* File descriptor for temp file */
1591 if (previous != NULL) {
1592 previous->flags &= ~(JOB_FIRST|JOB_IGNERR|JOB_SILENT|JOB_REMOTE);
1595 job = (Job *) emalloc(sizeof(Job));
1600 job->tailCmds = NULL;
1603 * Set the initial value of the flags for this job based on the global
1604 * ones and the node's attributes... Any flags supplied by the caller
1605 * are also added to the field.
1608 if (Targ_Ignore(gn)) {
1609 job->flags |= JOB_IGNERR;
1611 if (Targ_Silent(gn)) {
1612 job->flags |= JOB_SILENT;
1614 job->flags |= flags;
1617 * Check the commands now so any attributes from .DEFAULT have a chance
1618 * to migrate to the node
1620 if (!compatMake && job->flags & JOB_FIRST) {
1621 cmdsOK = Job_CheckCommands(gn, Error);
1627 * If the -n flag wasn't given, we open up OUR (not the child's)
1628 * temporary file to stuff commands in it. The thing is rd/wr so we don't
1629 * need to reopen it to feed it to the shell. If the -n flag *was* given,
1630 * we just set the file to be stdout. Cute, huh?
1632 if ((gn->type & OP_MAKE) || (!noExecute && !touchFlag)) {
1634 * We're serious here, but if the commands were bogus, we're
1641 (void) strcpy(tfile, TMPPAT);
1642 if ((tfd = mkstemp(tfile)) == -1)
1643 Punt("Cannot create temp file: %s", strerror(errno));
1644 job->cmdFILE = fdopen(tfd, "w+");
1646 if (job->cmdFILE == NULL) {
1648 Punt("Could not open %s", tfile);
1650 (void) fcntl(FILENO(job->cmdFILE), F_SETFD, 1);
1652 * Send the commands to the command file, flush all its buffers then
1653 * rewind and remove the thing.
1658 * used to be backwards; replace when start doing multiple commands
1663 * Be compatible: If this is the first time for this node,
1664 * verify its commands are ok and open the commands list for
1665 * sequential access by later invocations of JobStart.
1666 * Once that is done, we take the next command off the list
1667 * and print it to the command file. If the command was an
1668 * ellipsis, note that there's nothing more to execute.
1670 if ((job->flags&JOB_FIRST) && (Lst_Open(gn->commands) != SUCCESS)){
1673 LstNode ln = Lst_Next(gn->commands);
1676 JobPrintCommand((void *) Lst_Datum(ln),
1680 Lst_Close(gn->commands);
1682 if (noExec && !(job->flags & JOB_FIRST)) {
1684 * If we're not going to execute anything, the job
1685 * is done and we need to close down the various
1686 * file descriptors we've opened for output, then
1687 * call JobDoOutput to catch the final characters or
1688 * send the file to the screen... Note that the i/o streams
1689 * are only open if this isn't the first job.
1690 * Note also that this could not be done in
1691 * Job_CatchChildren b/c it wasn't clear if there were
1692 * more commands to execute or not...
1699 * We can do all the commands at once. hooray for sanity
1702 Lst_ForEach(gn->commands, JobPrintCommand, (void *)job);
1705 * If we didn't print out any commands to the shell script,
1706 * there's not much point in executing the shell, is there?
1708 if (numCommands == 0) {
1712 } else if (noExecute) {
1714 * Not executing anything -- just print all the commands to stdout
1715 * in one fell swoop. This will still set up job->tailCmds correctly.
1717 if (lastNode != gn) {
1718 MESSAGE(stdout, gn);
1721 job->cmdFILE = stdout;
1723 * Only print the commands if they're ok, but don't die if they're
1724 * not -- just let the user know they're bad and keep going. It
1725 * doesn't do any harm in this case and may do some good.
1728 Lst_ForEach(gn->commands, JobPrintCommand, (void *)job);
1731 * Don't execute the shell, thank you.
1736 * Just touch the target and note that no shell should be executed.
1737 * Set cmdFILE to stdout to make life easier. Check the commands, too,
1738 * but don't die if they're no good -- it does no harm to keep working
1741 job->cmdFILE = stdout;
1742 Job_Touch(gn, job->flags&JOB_SILENT);
1747 * If we're not supposed to execute a shell, don't.
1751 * Unlink and close the command file if we opened one
1753 if (job->cmdFILE != stdout) {
1754 if (job->cmdFILE != NULL)
1755 (void) fclose(job->cmdFILE);
1757 (void) fflush(stdout);
1761 * We only want to work our way up the graph if we aren't here because
1762 * the commands for the job were no good.
1765 if (aborting == 0) {
1766 if (job->tailCmds != NULL) {
1767 Lst_ForEachFrom(job->node->commands, job->tailCmds,
1771 job->node->made = MADE;
1772 Make_Update(job->node);
1775 return(JOB_FINISHED);
1781 (void) fflush(job->cmdFILE);
1785 * Set up the control arguments to the shell. This is based on the flags
1786 * set earlier for this job.
1788 JobMakeArgv(job, argv);
1791 * If we're using pipes to catch output, create the pipe by which we'll
1792 * get the shell's output. If we're using files, print out that we're
1793 * starting a job and then set up its temporary-file name.
1795 if (!compatMake || (job->flags & JOB_FIRST)) {
1799 Punt("Cannot create pipe: %s", strerror(errno));
1800 job->inPipe = fd[0];
1801 job->outPipe = fd[1];
1802 (void) fcntl(job->inPipe, F_SETFD, 1);
1803 (void) fcntl(job->outPipe, F_SETFD, 1);
1805 (void) fprintf(stdout, "Remaking `%s'\n", gn->name);
1806 (void) fflush(stdout);
1807 (void) strcpy(job->outFile, TMPPAT);
1808 if ((job->outFd = mkstemp(job->outFile)) == -1)
1809 Punt("cannot create temp file: %s", strerror(errno));
1810 (void) fcntl(job->outFd, F_SETFD, 1);
1815 if (!(gn->type & OP_NOEXPORT) && !(runLocalFirst && nLocal < maxLocal)) {
1817 local = !Rmt_Export(shellPath, argv, job);
1819 local = !Rmt_Begin(shellPath, argv, job->node);
1820 #endif /* RMT_NO_EXEC */
1822 job->flags |= JOB_REMOTE;
1828 if (local && (((nLocal >= maxLocal) &&
1829 !(job->flags & JOB_SPECIAL) &&
1831 (!(gn->type & OP_NOEXPORT) || (maxLocal != 0))
1838 * The job can only be run locally, but we've hit the limit of
1839 * local concurrency, so put the job on hold until some other job
1840 * finishes. Note that the special jobs (.BEGIN, .INTERRUPT and .END)
1841 * may be run locally even when the local limit has been reached
1842 * (e.g. when maxLocal == 0), though they will be exported if at
1843 * all possible. In addition, any target marked with .NOEXPORT will
1844 * be run locally if maxLocal is 0.
1848 DEBUGF(JOB, ("Can only run job locally.\n"));
1849 job->flags |= JOB_RESTART;
1850 (void) Lst_AtEnd(stoppedJobs, (void *)job);
1852 if ((nLocal >= maxLocal) && local) {
1854 * If we're running this job locally as a special case (see above),
1855 * at least say the table is full.
1858 DEBUGF(JOB, ("Local job queue is full.\n"));
1862 return(JOB_RUNNING);
1866 JobOutput(Job *job, char *cp, char *endp, int msg)
1870 if (commandShell->noPrint) {
1871 ecp = strstr(cp, commandShell->noPrint);
1872 while (ecp != NULL) {
1875 if (msg && job->node != lastNode) {
1876 MESSAGE(stdout, job->node);
1877 lastNode = job->node;
1880 * The only way there wouldn't be a newline after
1881 * this line is if it were the last in the buffer.
1882 * however, since the non-printable comes after it,
1883 * there must be a newline, so we don't print one.
1885 (void) fprintf(stdout, "%s", cp);
1886 (void) fflush(stdout);
1888 cp = ecp + commandShell->noPLen;
1891 * Still more to print, look again after skipping
1892 * the whitespace following the non-printable
1896 while (*cp == ' ' || *cp == '\t' || *cp == '\n') {
1899 ecp = strstr(cp, commandShell->noPrint);
1909 *-----------------------------------------------------------------------
1911 * This function is called at different times depending on
1912 * whether the user has specified that output is to be collected
1913 * via pipes or temporary files. In the former case, we are called
1914 * whenever there is something to read on the pipe. We collect more
1915 * output from the given job and store it in the job's outBuf. If
1916 * this makes up a line, we print it tagged by the job's identifier,
1918 * If output has been collected in a temporary file, we open the
1919 * file and read it line by line, transfering it to our own
1920 * output channel until the file is empty. At which point we
1921 * remove the temporary file.
1922 * In both cases, however, we keep our figurative eye out for the
1923 * 'noPrint' line for the shell from which the output came. If
1924 * we recognize a line, we don't print it. If the command is not
1925 * alone on the line (the character after it is not \0 or \n), we
1926 * do print whatever follows it.
1932 * curPos may be shifted as may the contents of outBuf.
1933 *-----------------------------------------------------------------------
1936 JobDoOutput(Job *job, Boolean finish)
1938 Boolean gotNL = FALSE; /* true if got a newline */
1939 Boolean fbuf; /* true if our buffer filled up */
1940 int nr; /* number of bytes read */
1941 int i; /* auxiliary index into outBuf */
1942 int max; /* limit for i (end of current data) */
1943 int nRead; /* (Temporary) number of bytes read */
1945 FILE *oFILE; /* Stream pointer to shell's output file */
1951 * Read as many bytes as will fit in the buffer.
1957 nRead = read(job->inPipe, &job->outBuf[job->curPos],
1958 JOB_BUFSIZE - job->curPos);
1960 DEBUGF(JOB, ("JobDoOutput(piperead)"));
1967 * If we hit the end-of-file (the job is dead), we must flush its
1968 * remaining output, so pretend we read a newline if there's any
1969 * output remaining in the buffer.
1970 * Also clear the 'finish' flag so we stop looping.
1972 if ((nr == 0) && (job->curPos != 0)) {
1973 job->outBuf[job->curPos] = '\n';
1976 } else if (nr == 0) {
1981 * Look for the last newline in the bytes we just got. If there is
1982 * one, break out of the loop with 'i' as its index and gotNL set
1985 max = job->curPos + nr;
1986 for (i = job->curPos + nr - 1; i >= job->curPos; i--) {
1987 if (job->outBuf[i] == '\n') {
1990 } else if (job->outBuf[i] == '\0') {
1994 job->outBuf[i] = ' ';
2000 if (job->curPos == JOB_BUFSIZE) {
2002 * If we've run out of buffer space, we have no choice
2003 * but to print the stuff. sigh.
2009 if (gotNL || fbuf) {
2011 * Need to send the output to the screen. Null terminate it
2012 * first, overwriting the newline character if there was one.
2013 * So long as the line isn't one we should filter (according
2014 * to the shell description), we print the line, preceded
2015 * by a target banner if this target isn't the same as the
2016 * one for which we last printed something.
2017 * The rest of the data in the buffer are then shifted down
2018 * to the start of the buffer and curPos is set accordingly.
2020 job->outBuf[i] = '\0';
2021 if (i >= job->curPos) {
2024 cp = JobOutput(job, job->outBuf, &job->outBuf[i], FALSE);
2027 * There's still more in that thar buffer. This time, though,
2028 * we know there's no newline at the end, so we add one of
2029 * our own free will.
2032 if (job->node != lastNode) {
2033 MESSAGE(stdout, job->node);
2034 lastNode = job->node;
2036 (void) fprintf(stdout, "%s%s", cp, gotNL ? "\n" : "");
2037 (void) fflush(stdout);
2041 /* shift the remaining characters down */
2042 (void) memcpy(job->outBuf, &job->outBuf[i + 1], max - (i + 1));
2043 job->curPos = max - (i + 1);
2047 * We have written everything out, so we just start over
2048 * from the start of the buffer. No copying. No nothing.
2055 * If the finish flag is true, we must loop until we hit
2056 * end-of-file on the pipe. This is guaranteed to happen
2057 * eventually since the other end of the pipe is now closed
2058 * (we closed it explicitly and the child has exited). When
2059 * we do get an EOF, finish will be set FALSE and we'll fall
2066 * We've been called to retrieve the output of the job from the
2067 * temporary file where it's been squirreled away. This consists of
2068 * opening the file, reading the output line by line, being sure not
2069 * to print the noPrint line for the shell we used, then close and
2070 * remove the temporary file. Very simple.
2072 * Change to read in blocks and do FindSubString type things as for
2073 * pipes? That would allow for "@echo -n..."
2075 oFILE = fopen(job->outFile, "r");
2076 if (oFILE != NULL) {
2077 (void) fprintf(stdout, "Results of making %s:\n", job->node->name);
2078 (void) fflush(stdout);
2079 while (fgets(inLine, sizeof(inLine), oFILE) != NULL) {
2080 char *cp, *endp, *oendp;
2083 oendp = endp = inLine + strlen(inLine);
2084 if (endp[-1] == '\n') {
2087 cp = JobOutput(job, inLine, endp, FALSE);
2090 * There's still more in that thar buffer. This time, though,
2091 * we know there's no newline at the end, so we add one of
2092 * our own free will.
2094 (void) fprintf(stdout, "%s", cp);
2095 (void) fflush(stdout);
2096 if (endp != oendp) {
2097 (void) fprintf(stdout, "\n");
2098 (void) fflush(stdout);
2101 (void) fclose(oFILE);
2102 (void) eunlink(job->outFile);
2108 *-----------------------------------------------------------------------
2109 * Job_CatchChildren --
2110 * Handle the exit of a child. Called from Make_Make.
2116 * The job descriptor is removed from the list of children.
2119 * We do waits, blocking or not, according to the wisdom of our
2120 * caller, until there are no more children to report. For each
2121 * job, call JobFinish to finish things off. This will take care of
2122 * putting jobs on the stoppedJobs queue.
2124 *-----------------------------------------------------------------------
2127 Job_CatchChildren(Boolean block)
2129 int pid; /* pid of dead child */
2130 Job *job; /* job descriptor for dead child */
2131 LstNode jnode; /* list element for finding job */
2132 int status; /* Exit/termination status */
2135 * Don't even bother if we know there's no one around.
2141 while ((pid = waitpid((pid_t) -1, &status,
2142 (block?0:WNOHANG)|WUNTRACED)) > 0)
2144 DEBUGF(JOB, ("Process %d exited or stopped.\n", pid));
2146 jnode = Lst_Find(jobs, (void *)&pid, JobCmpPid);
2148 if (jnode == NULL) {
2149 if (WIFSIGNALED(status) && (WTERMSIG(status) == SIGCONT)) {
2150 jnode = Lst_Find(stoppedJobs, (void *) &pid, JobCmpPid);
2151 if (jnode == NULL) {
2152 Error("Resumed child (%d) not in table", pid);
2155 job = (Job *)Lst_Datum(jnode);
2156 (void) Lst_Remove(stoppedJobs, jnode);
2158 Error("Child (%d) not in table?", pid);
2162 job = (Job *) Lst_Datum(jnode);
2163 (void) Lst_Remove(jobs, jnode);
2165 DEBUGF(JOB, ("Job queue is no longer full.\n"));
2168 if (!(job->flags & JOB_REMOTE)) {
2169 DEBUGF(JOB, ("Job queue has one fewer local process.\n"));
2177 JobFinish(job, &status);
2182 *-----------------------------------------------------------------------
2183 * Job_CatchOutput --
2184 * Catch the output from our children, if we're using
2185 * pipes do so. Otherwise just block time until we get a
2186 * signal (most likely a SIGCHLD) since there's no point in
2187 * just spinning when there's nothing to do and the reaping
2188 * of a child can wait for a while.
2194 * Output is read from pipes if we're piping.
2195 * -----------------------------------------------------------------------
2198 Job_CatchOutput(void)
2203 struct kevent kev[KEV_SIZE];
2206 struct timeval timeout;
2211 #ifdef RMT_WILL_WATCH
2212 int pnJobs; /* Previous nJobs */
2215 (void) fflush(stdout);
2216 #ifdef RMT_WILL_WATCH
2220 * It is possible for us to be called with nJobs equal to 0. This happens
2221 * if all the jobs finish and a job that is stopped cannot be run
2222 * locally (eg if maxLocal is 0) and cannot be exported. The job will
2223 * be placed back on the stoppedJobs queue, Job_Empty() will return false,
2224 * Make_Run will call us again when there's nothing for which to wait.
2225 * nJobs never changes, so we loop forever. Hence the check. It could
2226 * be argued that we should sleep for a bit so as not to swamp the
2227 * exportation system with requests. Perhaps we should.
2229 * NOTE: IT IS THE RESPONSIBILITY OF Rmt_Wait TO CALL Job_CatchChildren
2230 * IN A TIMELY FASHION TO CATCH ANY LOCALLY RUNNING JOBS THAT EXIT.
2231 * It may use the variable nLocal to determine if it needs to call
2232 * Job_CatchChildren (if nLocal is 0, there's nothing for which to
2235 while (nJobs != 0 && pnJobs == nJobs) {
2241 if ((nfds = kevent(kqfd, NULL, 0, kev, KEV_SIZE, NULL)) == -1) {
2243 Punt("kevent: %s", strerror(errno));
2245 for (i = 0; i < nfds; i++) {
2246 if (kev[i].flags & EV_ERROR) {
2247 warnc(kev[i].data, "kevent");
2250 switch (kev[i].filter) {
2252 JobDoOutput(kev[i].udata, FALSE);
2255 /* Just wake up and let Job_CatchChildren() collect the
2256 * terminated job. */
2263 timeout.tv_sec = SEL_SEC;
2264 timeout.tv_usec = SEL_USEC;
2266 if ((nfds = select(FD_SETSIZE, &readfds, (fd_set *) 0,
2267 (fd_set *) 0, &timeout)) <= 0)
2270 if (Lst_Open(jobs) == FAILURE) {
2271 Punt("Cannot open job table");
2273 while (nfds && (ln = Lst_Next(jobs)) != NULL) {
2274 job = (Job *) Lst_Datum(ln);
2275 if (FD_ISSET(job->inPipe, &readfds)) {
2276 JobDoOutput(job, FALSE);
2282 #endif /* !USE_KQUEUE */
2284 #endif /* RMT_WILL_WATCH */
2288 *-----------------------------------------------------------------------
2290 * Start the creation of a target. Basically a front-end for
2291 * JobStart used by the Make module.
2297 * Another job is started.
2299 *-----------------------------------------------------------------------
2304 (void) JobStart(gn, 0, NULL);
2308 *-----------------------------------------------------------------------
2310 * Initialize the process module, given a maximum number of jobs, and
2311 * a maximum number of local jobs.
2317 * lists and counters are initialized
2318 *-----------------------------------------------------------------------
2321 Job_Init(int maxproc, int maxlocal)
2323 GNode *begin; /* node for commands to do at the very start */
2325 jobs = Lst_Init(FALSE);
2326 stoppedJobs = Lst_Init(FALSE);
2328 maxLocal = maxlocal;
2338 if (maxJobs == 1 || beVerbose == 0
2344 * If only one job can run at a time, there's no need for a banner,
2352 if (shellPath == NULL) {
2354 * The user didn't specify a shell to use, so we are using the
2355 * default one... Both the absolute path and the last component
2356 * must be set. The last component is taken from the 'name' field
2357 * of the default shell description pointed-to by commandShell.
2358 * All default shells are located in _PATH_DEFSHELLDIR.
2360 shellName = commandShell->name;
2361 shellPath = str_concat(_PATH_DEFSHELLDIR, shellName, STR_ADDSLASH);
2364 if (commandShell->exit == NULL) {
2365 commandShell->exit = "";
2367 if (commandShell->echo == NULL) {
2368 commandShell->echo = "";
2372 * Catch the four signals that POSIX specifies if they aren't ignored.
2373 * JobPassSig will take care of calling JobInterrupt if appropriate.
2375 if (signal(SIGINT, SIG_IGN) != SIG_IGN) {
2376 (void) signal(SIGINT, JobPassSig);
2378 if (signal(SIGHUP, SIG_IGN) != SIG_IGN) {
2379 (void) signal(SIGHUP, JobPassSig);
2381 if (signal(SIGQUIT, SIG_IGN) != SIG_IGN) {
2382 (void) signal(SIGQUIT, JobPassSig);
2384 if (signal(SIGTERM, SIG_IGN) != SIG_IGN) {
2385 (void) signal(SIGTERM, JobPassSig);
2388 * There are additional signals that need to be caught and passed if
2389 * either the export system wants to be told directly of signals or if
2390 * we're giving each job its own process group (since then it won't get
2391 * signals from the terminal driver as we own the terminal)
2393 #if defined(RMT_WANTS_SIGNALS) || defined(USE_PGRP)
2394 if (signal(SIGTSTP, SIG_IGN) != SIG_IGN) {
2395 (void) signal(SIGTSTP, JobPassSig);
2397 if (signal(SIGTTOU, SIG_IGN) != SIG_IGN) {
2398 (void) signal(SIGTTOU, JobPassSig);
2400 if (signal(SIGTTIN, SIG_IGN) != SIG_IGN) {
2401 (void) signal(SIGTTIN, JobPassSig);
2403 if (signal(SIGWINCH, SIG_IGN) != SIG_IGN) {
2404 (void) signal(SIGWINCH, JobPassSig);
2409 if ((kqfd = kqueue()) == -1) {
2410 Punt("kqueue: %s", strerror(errno));
2414 begin = Targ_FindNode(".BEGIN", TARG_NOCREATE);
2416 if (begin != NULL) {
2417 JobStart(begin, JOB_SPECIAL, (Job *)0);
2420 #ifndef RMT_WILL_WATCH
2421 Job_CatchChildren(!usePipes);
2422 #endif /* RMT_WILL_WATCH */
2425 postCommands = Targ_FindNode(".END", TARG_CREATE);
2429 *-----------------------------------------------------------------------
2431 * See if the job table is full. It is considered full if it is OR
2432 * if we are in the process of aborting OR if we have
2433 * reached/exceeded our local quota. This prevents any more jobs
2437 * TRUE if the job table is full, FALSE otherwise
2440 *-----------------------------------------------------------------------
2445 return(aborting || jobFull);
2449 *-----------------------------------------------------------------------
2451 * See if the job table is empty. Because the local concurrency may
2452 * be set to 0, it is possible for the job table to become empty,
2453 * while the list of stoppedJobs remains non-empty. In such a case,
2454 * we want to restart as many jobs as we can.
2457 * TRUE if it is. FALSE if it ain't.
2462 * -----------------------------------------------------------------------
2468 if (!Lst_IsEmpty(stoppedJobs) && !aborting) {
2470 * The job table is obviously not full if it has no jobs in
2471 * it...Try and restart the stopped jobs.
2485 *-----------------------------------------------------------------------
2487 * Find a matching shell in 'shells' given its final component.
2490 * A pointer to the Shell structure.
2495 *-----------------------------------------------------------------------
2498 JobMatchShell(char *name)
2500 Shell *sh; /* Pointer into shells table */
2501 Shell *match; /* Longest-matching shell */
2506 eoname = name + strlen(name);
2510 for (sh = shells; sh->name != NULL; sh++) {
2511 for (cp1 = eoname - strlen(sh->name), cp2 = sh->name;
2512 *cp1 != '\0' && *cp1 == *cp2;
2518 } else if (match == NULL || strlen(match->name) < strlen(sh->name)) {
2522 return(match == NULL ? sh : match);
2526 *-----------------------------------------------------------------------
2528 * Parse a shell specification and set up commandShell, shellPath
2529 * and shellName appropriately.
2532 * FAILURE if the specification was incorrect.
2535 * commandShell points to a Shell structure (either predefined or
2536 * created from the shell spec), shellPath is the full path of the
2537 * shell described by commandShell, while shellName is just the
2538 * final component of shellPath.
2541 * A shell specification consists of a .SHELL target, with dependency
2542 * operator, followed by a series of blank-separated words. Double
2543 * quotes can be used to use blanks in words. A backslash escapes
2544 * anything (most notably a double-quote and a space) and
2545 * provides the functionality it does in C. Each word consists of
2546 * keyword and value separated by an equal sign. There should be no
2547 * unnecessary spaces in the word. The keywords are as follows:
2548 * name Name of shell.
2549 * path Location of shell. Overrides "name" if given
2550 * quiet Command to turn off echoing.
2551 * echo Command to turn echoing on
2552 * filter Result of turning off echoing that shouldn't be
2554 * echoFlag Flag to turn echoing on at the start
2555 * errFlag Flag to turn error checking on at the start
2556 * hasErrCtl True if shell has error checking control
2557 * check Command to turn on error checking if hasErrCtl
2558 * is TRUE or template of command to echo a command
2559 * for which error checking is off if hasErrCtl is
2561 * ignore Command to turn off error checking if hasErrCtl
2562 * is TRUE or template of command to execute a
2563 * command so as to ignore any errors it returns if
2564 * hasErrCtl is FALSE.
2566 *-----------------------------------------------------------------------
2569 Job_ParseShell(char *line)
2577 Boolean fullSpec = FALSE;
2579 while (isspace((unsigned char) *line)) {
2582 words = brk_string(line, &wordCount, TRUE);
2584 memset(&newShell, 0, sizeof(newShell));
2587 * Parse the specification by keyword
2589 for (path = NULL, argc = wordCount - 1, argv = words + 1;
2592 if (strncmp(*argv, "path=", 5) == 0) {
2594 } else if (strncmp(*argv, "name=", 5) == 0) {
2595 newShell.name = &argv[0][5];
2597 if (strncmp(*argv, "quiet=", 6) == 0) {
2598 newShell.echoOff = &argv[0][6];
2599 } else if (strncmp(*argv, "echo=", 5) == 0) {
2600 newShell.echoOn = &argv[0][5];
2601 } else if (strncmp(*argv, "filter=", 7) == 0) {
2602 newShell.noPrint = &argv[0][7];
2603 newShell.noPLen = strlen(newShell.noPrint);
2604 } else if (strncmp(*argv, "echoFlag=", 9) == 0) {
2605 newShell.echo = &argv[0][9];
2606 } else if (strncmp(*argv, "errFlag=", 8) == 0) {
2607 newShell.exit = &argv[0][8];
2608 } else if (strncmp(*argv, "hasErrCtl=", 10) == 0) {
2609 char c = argv[0][10];
2610 newShell.hasErrCtl = !((c != 'Y') && (c != 'y') &&
2611 (c != 'T') && (c != 't'));
2612 } else if (strncmp(*argv, "check=", 6) == 0) {
2613 newShell.errCheck = &argv[0][6];
2614 } else if (strncmp(*argv, "ignore=", 7) == 0) {
2615 newShell.ignErr = &argv[0][7];
2617 Parse_Error(PARSE_FATAL, "Unknown keyword \"%s\"",
2627 * If no path was given, the user wants one of the pre-defined shells,
2628 * yes? So we find the one s/he wants with the help of JobMatchShell
2629 * and set things up the right way. shellPath will be set up by
2632 if (newShell.name == NULL) {
2633 Parse_Error(PARSE_FATAL, "Neither path nor name specified");
2636 commandShell = JobMatchShell(newShell.name);
2637 shellName = newShell.name;
2641 * The user provided a path. If s/he gave nothing else (fullSpec is
2642 * FALSE), try and find a matching shell in the ones we know of.
2643 * Else we just take the specification at its word and copy it
2644 * to a new location. In either case, we need to record the
2645 * path the user gave for the shell.
2648 path = strrchr(path, '/');
2654 if (newShell.name != NULL) {
2655 shellName = newShell.name;
2660 commandShell = JobMatchShell(shellName);
2662 commandShell = (Shell *) emalloc(sizeof(Shell));
2663 *commandShell = newShell;
2667 if (commandShell->echoOn && commandShell->echoOff) {
2668 commandShell->hasEchoCtl = TRUE;
2671 if (!commandShell->hasErrCtl) {
2672 if (commandShell->errCheck == NULL) {
2673 commandShell->errCheck = "";
2675 if (commandShell->ignErr == NULL) {
2676 commandShell->ignErr = "%s\n";
2683 *-----------------------------------------------------------------------
2685 * Handle the receipt of an interrupt.
2691 * All children are killed. Another job will be started if the
2692 * .INTERRUPT target was given.
2693 *-----------------------------------------------------------------------
2696 JobInterrupt(int runINTERRUPT, int signo)
2698 LstNode ln; /* element in job table */
2699 Job *job = NULL; /* job descriptor in that element */
2700 GNode *interrupt; /* the node describing the .INTERRUPT target */
2702 aborting = ABORT_INTERRUPT;
2704 (void) Lst_Open(jobs);
2705 while ((ln = Lst_Next(jobs)) != NULL) {
2706 job = (Job *) Lst_Datum(ln);
2708 if (!Targ_Precious(job->node)) {
2709 char *file = (job->node->path == NULL ?
2712 if (!noExecute && eunlink(file) != -1) {
2713 Error("*** %s removed", file);
2716 #ifdef RMT_WANTS_SIGNALS
2717 if (job->flags & JOB_REMOTE) {
2719 * If job is remote, let the Rmt module do the killing.
2721 if (!Rmt_Signal(job, signo)) {
2723 * If couldn't kill the thing, finish it out now with an
2724 * error code, since no exit report will come in likely.
2728 status.w_status = 0;
2729 status.w_retcode = 1;
2730 JobFinish(job, &status);
2732 } else if (job->pid) {
2733 KILL(job->pid, signo);
2737 DEBUGF(JOB, ("JobInterrupt passing signal to child %d.\n",
2739 KILL(job->pid, signo);
2741 #endif /* RMT_WANTS_SIGNALS */
2745 (void)Lst_Open(stoppedJobs);
2746 while ((ln = Lst_Next(stoppedJobs)) != NULL) {
2747 job = (Job *) Lst_Datum(ln);
2749 if (job->flags & JOB_RESTART) {
2750 DEBUGF(JOB, "JobInterrupt skipping job on stopped queue"
2751 "-- it was waiting to be restarted.\n");
2754 if (!Targ_Precious(job->node)) {
2755 char *file = (job->node->path == NULL ?
2758 if (eunlink(file) == 0) {
2759 Error("*** %s removed", file);
2763 * Resume the thing so it will take the signal.
2765 DEBUGF(JOB, ("JobInterrupt passing CONT to stopped child %d.\n", job->pid));
2766 KILL(job->pid, SIGCONT);
2767 #ifdef RMT_WANTS_SIGNALS
2768 if (job->flags & JOB_REMOTE) {
2770 * If job is remote, let the Rmt module do the killing.
2772 if (!Rmt_Signal(job, SIGINT)) {
2774 * If couldn't kill the thing, finish it out now with an
2775 * error code, since no exit report will come in likely.
2778 status.w_status = 0;
2779 status.w_retcode = 1;
2780 JobFinish(job, &status);
2782 } else if (job->pid) {
2783 DEBUGF(JOB, "JobInterrupt passing interrupt to stopped child %d.\n",
2785 KILL(job->pid, SIGINT);
2787 #endif /* RMT_WANTS_SIGNALS */
2790 Lst_Close(stoppedJobs);
2792 if (runINTERRUPT && !touchFlag) {
2793 interrupt = Targ_FindNode(".INTERRUPT", TARG_NOCREATE);
2794 if (interrupt != NULL) {
2795 ignoreErrors = FALSE;
2797 JobStart(interrupt, JOB_IGNDOTS, (Job *)0);
2800 #ifndef RMT_WILL_WATCH
2801 Job_CatchChildren(!usePipes);
2802 #endif /* RMT_WILL_WATCH */
2809 *-----------------------------------------------------------------------
2811 * Do final processing such as the running of the commands
2812 * attached to the .END target.
2815 * Number of errors reported.
2816 *-----------------------------------------------------------------------
2821 if (postCommands != NULL && !Lst_IsEmpty(postCommands->commands)) {
2823 Error("Errors reported so .END ignored");
2825 JobStart(postCommands, JOB_SPECIAL | JOB_IGNDOTS, NULL);
2829 #ifndef RMT_WILL_WATCH
2830 Job_CatchChildren(!usePipes);
2831 #endif /* RMT_WILL_WATCH */
2839 *-----------------------------------------------------------------------
2841 * Waits for all running jobs to finish and returns. Sets 'aborting'
2842 * to ABORT_WAIT to prevent other jobs from starting.
2848 * Currently running jobs finish.
2850 *-----------------------------------------------------------------------
2855 aborting = ABORT_WAIT;
2856 while (nJobs != 0) {
2858 #ifndef RMT_WILL_WATCH
2859 Job_CatchChildren(!usePipes);
2860 #endif /* RMT_WILL_WATCH */
2866 *-----------------------------------------------------------------------
2868 * Abort all currently running jobs without handling output or anything.
2869 * This function is to be called only in the event of a major
2870 * error. Most definitely NOT to be called from JobInterrupt.
2876 * All children are killed, not just the firstborn
2877 *-----------------------------------------------------------------------
2882 LstNode ln; /* element in job table */
2883 Job *job; /* the job descriptor in that element */
2886 aborting = ABORT_ERROR;
2890 (void) Lst_Open(jobs);
2891 while ((ln = Lst_Next(jobs)) != NULL) {
2892 job = (Job *) Lst_Datum(ln);
2895 * kill the child process with increasingly drastic signals to make
2896 * darn sure it's dead.
2898 #ifdef RMT_WANTS_SIGNALS
2899 if (job->flags & JOB_REMOTE) {
2900 Rmt_Signal(job, SIGINT);
2901 Rmt_Signal(job, SIGKILL);
2903 KILL(job->pid, SIGINT);
2904 KILL(job->pid, SIGKILL);
2907 KILL(job->pid, SIGINT);
2908 KILL(job->pid, SIGKILL);
2909 #endif /* RMT_WANTS_SIGNALS */
2914 * Catch as many children as want to report in at first, then give up
2916 while (waitpid((pid_t) -1, &foo, WNOHANG) > 0)
2922 *-----------------------------------------------------------------------
2923 * JobFlagForMigration --
2924 * Handle the eviction of a child. Called from RmtStatusChange.
2925 * Flags the child as remigratable and then suspends it. Takes
2926 * the ID of the host we used, for matching children.
2932 * The job descriptor is flagged for remigration.
2934 *-----------------------------------------------------------------------
2937 JobFlagForMigration(int hostID)
2939 Job *job; /* job descriptor for dead child */
2940 LstNode jnode; /* list element for finding job */
2942 DEBUGF(JOB, ("JobFlagForMigration(%d) called.\n", hostID));
2943 jnode = Lst_Find(jobs, (void *)hostID, JobCmpRmtID);
2945 if (jnode == NULL) {
2946 jnode = Lst_Find(stoppedJobs, (void *)hostID, JobCmpRmtID);
2947 if (jnode == NULL) {
2949 Error("Evicting host(%d) not in table", hostID);
2954 job = (Job *) Lst_Datum(jnode);
2956 DEBUGF(JOB, ("JobFlagForMigration(%d) found job '%s'.\n", hostID, job->node->name));
2958 KILL(job->pid, SIGSTOP);
2960 job->flags |= JOB_REMIGRATE;
2966 *-----------------------------------------------------------------------
2968 * Tries to restart stopped jobs if there are slots available.
2969 * Note that this tries to restart them regardless of pending errors.
2970 * It's not good to leave stopped jobs lying around!
2976 * Resumes(and possibly migrates) jobs.
2978 *-----------------------------------------------------------------------
2981 JobRestartJobs(void)
2983 while (!jobFull && !Lst_IsEmpty(stoppedJobs)) {
2984 DEBUGF(JOB, ("Job queue is not full. Restarting a stopped job.\n"));
2985 JobRestart((Job *)Lst_DeQueue(stoppedJobs));