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
42 #include <sys/cdefs.h>
43 __FBSDID("$FreeBSD$");
51 * handle the creation etc. of our child processes.
54 * Job_Make Start the creation of the given target.
56 * Job_CatchChildren Check for and handle the termination of any
57 * children. This must be called reasonably
58 * frequently to keep the whole make going at
59 * a decent clip, since job table entries aren't
60 * removed until their process is caught this way.
61 * Its single argument is TRUE if the function
62 * should block waiting for a child to terminate.
64 * Job_CatchOutput Print any output our children have produced.
65 * Should also be called fairly frequently to
66 * keep the user informed of what's going on.
67 * If no output is waiting, it will block for
68 * a time given by the SEL_* constants, below,
69 * or until output is ready.
71 * Job_Init Called to intialize this module. in addition,
72 * any commands attached to the .BEGIN target
73 * are executed before this function returns.
74 * Hence, the makefile must have been parsed
75 * before this function is called.
77 * Job_Full Return TRUE if the job table is filled.
79 * Job_Empty Return TRUE if the job table is completely
82 * Job_ParseShell Given the line following a .SHELL target, parse
83 * the line as a shell specification. Returns
84 * FAILURE if the spec was incorrect.
86 * Job_Finish Perform any final processing which needs doing.
87 * This includes the execution of any commands
88 * which have been/were attached to the .END
89 * target. It should only be called when the
92 * Job_AbortAll Abort all currently running jobs. It doesn't
93 * handle output or do anything for the jobs,
94 * just kills them. It should only be called in
95 * an emergency, as it were.
97 * Job_CheckCommands Verify that the commands for a target are
98 * ok. Provide them if necessary and possible.
100 * Job_Touch Update a target without really updating it.
102 * Job_Wait Wait for all currently-running jobs to finish.
105 #include <sys/types.h>
106 #include <sys/stat.h>
107 #include <sys/file.h>
108 #include <sys/time.h>
109 #include <sys/wait.h>
122 #include "pathnames.h"
127 # define STATIC static
131 * error handling variables
133 static int errors = 0; /* number of errors reported */
134 static int aborting = 0; /* why is the make aborting? */
135 #define ABORT_ERROR 1 /* Because of an error */
136 #define ABORT_INTERRUPT 2 /* Because it was interrupted */
137 #define ABORT_WAIT 3 /* Waiting for jobs to finish */
140 * XXX: Avoid SunOS bug... FILENO() is fp->_file, and file
141 * is a char! So when we go above 127 we turn negative!
143 #define FILENO(a) ((unsigned) fileno(a))
146 * post-make command processing. The node postCommands is really just the
147 * .END target but we keep it around to avoid having to search for it
150 static GNode *postCommands; /* node containing commands to execute when
151 * everything else is done */
152 static int numCommands; /* The number of commands actually printed
153 * for a target. Should this number be
154 * 0, no shell will be executed. */
157 * Return values from JobStart.
159 #define JOB_RUNNING 0 /* Job is running */
160 #define JOB_ERROR 1 /* Error in starting the job */
161 #define JOB_FINISHED 2 /* The job is already finished */
162 #define JOB_STOPPED 3 /* The job is stopped */
165 * tfile is used to build temp file names to store shell commands to
168 static char tfile[sizeof(TMPPAT)];
172 * Descriptions for various shells.
174 static Shell shells[] = {
176 * CSH description. The csh can do echo control by playing
177 * with the setting of the 'echo' shell variable. Sadly,
178 * however, it is unable to do error control nicely.
182 TRUE, "unset verbose", "set verbose", "unset verbose", 10,
183 FALSE, "echo \"%s\"\n", "csh -c \"%s || exit 0\"",
187 * SH description. Echo control is also possible and, under
188 * sun UNIX anyway, one can even control error checking.
192 TRUE, "set -", "set -v", "set -", 5,
193 TRUE, "set -e", "set +e",
194 #ifdef OLDBOURNESHELL
195 FALSE, "echo \"%s\"\n", "sh -c '%s || exit 0'\n",
200 * KSH description. The Korn shell has a superset of
201 * the Bourne shell's functionality.
205 TRUE, "set -", "set -v", "set -", 5,
206 TRUE, "set -e", "set +e",
214 FALSE, (char *) 0, (char *) 0, (char *) 0, 0,
215 FALSE, (char *) 0, (char *) 0,
216 (char *) 0, (char *) 0,
219 static Shell *commandShell = &shells[DEFSHELL];/* this is the shell to
221 * commands in the Makefile.
223 * Job_ParseShell function */
224 static char *shellPath = NULL, /* full pathname of
225 * executable image */
226 *shellName; /* last component of shell */
229 static int maxJobs; /* The most children we can run at once */
230 static int maxLocal; /* The most local ones we can have */
231 STATIC int nJobs; /* The number of children currently running */
232 STATIC int nLocal; /* The number of local children */
233 STATIC Lst jobs; /* The structures that describe them */
234 STATIC Boolean jobFull; /* Flag to tell when the job table is full. It
235 * is set TRUE when (1) the total number of
236 * running jobs equals the maximum allowed or
237 * (2) a job can only be run locally, but
238 * nLocal equals maxLocal */
239 #ifndef RMT_WILL_WATCH
240 static fd_set outputs; /* Set of descriptors of pipes connected to
241 * the output channels of children */
244 STATIC GNode *lastNode; /* The node for which output was most recently
246 STATIC char *targFmt; /* Format string to use to head output from a
247 * job when it's not the most-recent job heard
251 # define TARG_FMT "--- %s at %s ---\n" /* Default format */
252 # define MESSAGE(fp, gn) \
253 (void) fprintf(fp, targFmt, gn->name, gn->rem.hname);
255 # define TARG_FMT "--- %s ---\n" /* Default format */
256 # define MESSAGE(fp, gn) \
257 (void) fprintf(fp, targFmt, gn->name);
261 * When JobStart attempts to run a job remotely but can't, and isn't allowed
262 * to run the job locally, or when Job_CatchChildren detects a job that has
263 * been migrated home, the job is placed on the stoppedJobs queue to be run
264 * when the next job finishes.
266 STATIC Lst stoppedJobs; /* Lst of Job structures describing
267 * jobs that were stopped due to concurrency
268 * limits or migration home */
271 #if defined(USE_PGRP) && defined(SYSV)
272 # define KILL(pid, sig) killpg(-(pid), (sig))
274 # if defined(USE_PGRP)
275 # define KILL(pid, sig) killpg((pid), (sig))
277 # define KILL(pid, sig) kill((pid), (sig))
282 * Grmpf... There is no way to set bits of the wait structure
283 * anymore with the stupid W*() macros. I liked the union wait
284 * stuff much more. So, we devise our own macros... This is
285 * really ugly, use dramamine sparingly. You have been warned.
287 #define W_SETMASKED(st, val, fun) \
290 int mask = fun(sh); \
292 for (sh = 0; ((mask >> sh) & 1) == 0; sh++) \
294 *(st) = (*(st) & ~mask) | ((val) << sh); \
297 #define W_SETTERMSIG(st, val) W_SETMASKED(st, val, WTERMSIG)
298 #define W_SETEXITSTATUS(st, val) W_SETMASKED(st, val, WEXITSTATUS)
301 static int JobCondPassSig(void *, void *);
302 static void JobPassSig(int);
303 static int JobCmpPid(void *, void *);
304 static int JobPrintCommand(void *, void *);
305 static int JobSaveCommand(void *, void *);
306 static void JobClose(Job *);
308 static int JobCmpRmtID(Job *, int);
309 # ifdef RMT_WILL_WATCH
310 static void JobLocalInput(int, Job *);
313 static void JobFinish(Job *, int *);
314 static void JobExec(Job *, char **);
316 static void JobMakeArgv(Job *, char **);
317 static void JobRestart(Job *);
318 static int JobStart(GNode *, int, Job *);
319 static char *JobOutput(Job *, char *, char *, int);
320 static void JobDoOutput(Job *, Boolean);
321 static Shell *JobMatchShell(char *);
322 static void JobInterrupt(int, int);
323 static void JobRestartJobs(void);
326 *-----------------------------------------------------------------------
328 * Pass a signal to a job if the job is remote or if USE_PGRP
335 * None, except the job may bite it.
337 *-----------------------------------------------------------------------
340 JobCondPassSig(jobp, signop)
341 void * jobp; /* Job to biff */
342 void * signop; /* Signal to send it */
344 Job *job = (Job *) jobp;
345 int signo = *(int *) signop;
346 #ifdef RMT_WANTS_SIGNALS
347 if (job->flags & JOB_REMOTE) {
348 (void) Rmt_Signal(job, signo);
350 KILL(job->pid, signo);
354 * Assume that sending the signal to job->pid will signal any remote
357 DEBUGF(JOB, ("JobCondPassSig passing signal %d to child %d.\n", signo, job->pid));
358 KILL(job->pid, signo);
364 *-----------------------------------------------------------------------
366 * Pass a signal on to all remote jobs and to all local jobs if
367 * USE_PGRP is defined, then die ourselves.
373 * We die by the same signal.
375 *-----------------------------------------------------------------------
379 int signo; /* The signal number we've received */
381 sigset_t nmask, omask;
382 struct sigaction act;
384 DEBUGF(JOB, ("JobPassSig(%d) called.\n", signo));
385 Lst_ForEach(jobs, JobCondPassSig, (void *) &signo);
388 * Deal with proper cleanup based on the signal received. We only run
389 * the .INTERRUPT target if the signal was in fact an interrupt. The other
390 * three termination signals are more of a "get out *now*" command.
392 if (signo == SIGINT) {
393 JobInterrupt(TRUE, signo);
394 } else if ((signo == SIGHUP) || (signo == SIGTERM) || (signo == SIGQUIT)) {
395 JobInterrupt(FALSE, signo);
399 * Leave gracefully if SIGQUIT, rather than core dumping.
401 if (signo == SIGQUIT) {
406 * Send ourselves the signal now we've given the message to everyone else.
407 * Note we block everything else possible while we're getting the signal.
408 * This ensures that all our jobs get continued when we wake up before
409 * we take any other signal.
412 sigaddset(&nmask, signo);
413 sigprocmask(SIG_SETMASK, &nmask, &omask);
414 act.sa_handler = SIG_DFL;
415 sigemptyset(&act.sa_mask);
417 sigaction(signo, &act, NULL);
419 DEBUGF(JOB, ("JobPassSig passing signal to self, mask = %x.\n", ~0 & ~(1 << (signo-1))));
420 (void) signal(signo, SIG_DFL);
422 (void) KILL(getpid(), signo);
425 Lst_ForEach(jobs, JobCondPassSig, (void *) &signo);
427 (void) sigprocmask(SIG_SETMASK, &omask, NULL);
428 sigprocmask(SIG_SETMASK, &omask, NULL);
429 act.sa_handler = JobPassSig;
430 sigaction(signo, &act, NULL);
434 *-----------------------------------------------------------------------
436 * Compare the pid of the job with the given pid and return 0 if they
437 * are equal. This function is called from Job_CatchChildren via
438 * Lst_Find to find the job descriptor of the finished job.
441 * 0 if the pid's match
445 *-----------------------------------------------------------------------
449 void * job; /* job to examine */
450 void * pid; /* process id desired */
452 return *(int *) pid - ((Job *) job)->pid;
457 *-----------------------------------------------------------------------
459 * Compare the rmtID of the job with the given rmtID and return 0 if they
463 * 0 if the rmtID's match
467 *-----------------------------------------------------------------------
470 JobCmpRmtID(job, rmtID)
471 void * job; /* job to examine */
472 void * rmtID; /* remote id desired */
474 return(*(int *) rmtID - *(int *) job->rmtID);
479 *-----------------------------------------------------------------------
481 * Put out another command for the given job. If the command starts
482 * with an @ or a - we process it specially. In the former case,
483 * so long as the -s and -n flags weren't given to make, we stick
484 * a shell-specific echoOff command in the script. In the latter,
485 * we ignore errors for the entire job, unless the shell has error
487 * If the command is just "..." we take all future commands for this
488 * job to be commands to be executed once the entire graph has been
489 * made and return non-zero to signal that the end of the commands
490 * was reached. These commands are later attached to the postCommands
491 * node and executed by Job_Finish when all things are done.
492 * This function is called from JobStart via Lst_ForEach.
495 * Always 0, unless the command was "..."
498 * If the command begins with a '-' and the shell has no error control,
499 * the JOB_IGNERR flag is set in the job descriptor.
500 * If the command is "..." and we're not ignoring such things,
501 * tailCmds is set to the successor node of the cmd.
502 * numCommands is incremented if the command is actually printed.
503 *-----------------------------------------------------------------------
506 JobPrintCommand(cmdp, jobp)
507 void * cmdp; /* command string to print */
508 void * jobp; /* job for which to print it */
510 Boolean noSpecials; /* true if we shouldn't worry about
511 * inserting special commands into
512 * the input stream. */
513 Boolean shutUp = FALSE; /* true if we put a no echo command
514 * into the command file */
515 Boolean errOff = FALSE; /* true if we turned error checking
516 * off before printing the command
517 * and need to turn it back on */
518 char *cmdTemplate; /* Template to use when printing the
520 char *cmdStart; /* Start of expanded command */
521 LstNode cmdNode; /* Node for replacing the command */
522 char *cmd = (char *) cmdp;
523 Job *job = (Job *) jobp;
525 noSpecials = (noExecute && !(job->node->type & OP_MAKE));
527 if (strcmp(cmd, "...") == 0) {
528 job->node->type |= OP_SAVE_CMDS;
529 if ((job->flags & JOB_IGNDOTS) == 0) {
530 job->tailCmds = Lst_Succ(Lst_Member(job->node->commands,
537 #define DBPRINTF(fmt, arg) \
538 DEBUGF(JOB, (fmt, arg)); \
539 (void) fprintf(job->cmdFILE, fmt, arg); \
540 (void) fflush(job->cmdFILE);
545 * For debugging, we replace each command with the result of expanding
546 * the variables in the command.
548 cmdNode = Lst_Member(job->node->commands, (void *)cmd);
549 cmdStart = cmd = Var_Subst(NULL, cmd, job->node, FALSE);
550 Lst_Replace(cmdNode, (void *)cmdStart);
552 cmdTemplate = "%s\n";
555 * Check for leading @' and -'s to control echoing and error checking.
557 while (*cmd == '@' || *cmd == '-') {
559 shutUp = DEBUG(LOUD) ? FALSE : TRUE;
566 while (isspace((unsigned char) *cmd))
570 if (!(job->flags & JOB_SILENT) && !noSpecials &&
571 commandShell->hasEchoCtl) {
572 DBPRINTF("%s\n", commandShell->echoOff);
579 if ( !(job->flags & JOB_IGNERR) && !noSpecials) {
580 if (commandShell->hasErrCtl) {
582 * we don't want the error-control commands showing
583 * up either, so we turn off echoing while executing
584 * them. We could put another field in the shell
585 * structure to tell JobDoOutput to look for this
586 * string too, but why make it any more complex than
589 if (!(job->flags & JOB_SILENT) && !shutUp &&
590 commandShell->hasEchoCtl) {
591 DBPRINTF("%s\n", commandShell->echoOff);
592 DBPRINTF("%s\n", commandShell->ignErr);
593 DBPRINTF("%s\n", commandShell->echoOn);
595 DBPRINTF("%s\n", commandShell->ignErr);
597 } else if (commandShell->ignErr &&
598 (*commandShell->ignErr != '\0'))
601 * The shell has no error control, so we need to be
602 * weird to get it to ignore any errors from the command.
603 * If echoing is turned on, we turn it off and use the
604 * errCheck template to echo the command. Leave echoing
605 * off so the user doesn't see the weirdness we go through
606 * to ignore errors. Set cmdTemplate to use the weirdness
607 * instead of the simple "%s\n" template.
609 if (!(job->flags & JOB_SILENT) && !shutUp &&
610 commandShell->hasEchoCtl) {
611 DBPRINTF("%s\n", commandShell->echoOff);
612 DBPRINTF(commandShell->errCheck, cmd);
615 cmdTemplate = commandShell->ignErr;
617 * The error ignoration (hee hee) is already taken care
618 * of by the ignErr template, so pretend error checking
630 DBPRINTF(cmdTemplate, cmd);
634 * If echoing is already off, there's no point in issuing the
635 * echoOff command. Otherwise we issue it and pretend it was on
636 * for the whole command...
638 if (!shutUp && !(job->flags & JOB_SILENT) && commandShell->hasEchoCtl){
639 DBPRINTF("%s\n", commandShell->echoOff);
642 DBPRINTF("%s\n", commandShell->errCheck);
645 DBPRINTF("%s\n", commandShell->echoOn);
651 *-----------------------------------------------------------------------
653 * Save a command to be executed when everything else is done.
654 * Callback function for JobFinish...
660 * The command is tacked onto the end of postCommands's commands list.
662 *-----------------------------------------------------------------------
665 JobSaveCommand(cmd, gn)
669 cmd = (void *) Var_Subst(NULL, (char *) cmd, (GNode *) gn, FALSE);
670 (void) Lst_AtEnd(postCommands->commands, cmd);
676 *-----------------------------------------------------------------------
678 * Called to close both input and output pipes when a job is finished.
684 * The file descriptors associated with the job are closed.
686 *-----------------------------------------------------------------------
693 #ifdef RMT_WILL_WATCH
694 Rmt_Ignore(job->inPipe);
696 FD_CLR(job->inPipe, &outputs);
698 if (job->outPipe != job->inPipe) {
699 (void) close(job->outPipe);
701 JobDoOutput(job, TRUE);
702 (void) close(job->inPipe);
704 (void) close(job->outFd);
705 JobDoOutput(job, TRUE);
710 *-----------------------------------------------------------------------
712 * Do final processing for the given job including updating
713 * parents and starting new jobs as available/necessary. Note
714 * that we pay no attention to the JOB_IGNERR flag here.
715 * This is because when we're called because of a noexecute flag
716 * or something, jstat.w_status is 0 and when called from
717 * Job_CatchChildren, the status is zeroed if it s/b ignored.
723 * Some nodes may be put on the toBeMade queue.
724 * Final commands for the job are placed on postCommands.
726 * If we got an error and are aborting (aborting == ABORT_ERROR) and
727 * the job list is now empty, we are done for the day.
728 * If we recognized an error (errors !=0), we set the aborting flag
729 * to ABORT_ERROR so no more jobs will be started.
730 *-----------------------------------------------------------------------
734 JobFinish(job, status)
735 Job *job; /* job to finish */
736 int *status; /* sub-why job went away */
740 if ((WIFEXITED(*status) &&
741 (((WEXITSTATUS(*status) != 0) && !(job->flags & JOB_IGNERR)))) ||
742 (WIFSIGNALED(*status) && (WTERMSIG(*status) != SIGCONT)))
745 * If it exited non-zero and either we're doing things our
746 * way or we're not ignoring errors, the job is finished.
747 * Similarly, if the shell died because of a signal
748 * the job is also finished. In these
749 * cases, finish out the job's output before printing the exit
753 KILL(job->pid, SIGCONT);
756 if (job->cmdFILE != NULL && job->cmdFILE != stdout) {
757 (void) fclose(job->cmdFILE);
761 if (job->flags & JOB_REMOTE)
762 Rmt_Done(job->rmtID, job->node);
764 } else if (WIFEXITED(*status)) {
766 * Deal with ignored errors in -B mode. We need to print a message
767 * telling of the ignored error as well as setting status.w_status
768 * to 0 so the next command gets run. To do this, we set done to be
769 * TRUE if in -B mode and the job exited non-zero.
771 done = WEXITSTATUS(*status) != 0;
773 * Old comment said: "Note we don't
774 * want to close down any of the streams until we know we're at the
776 * But we do. Otherwise when are we going to print the rest of the
781 if (job->flags & JOB_REMOTE)
782 Rmt_Done(job->rmtID, job->node);
786 * No need to close things down or anything.
792 WIFSTOPPED(*status) ||
793 (WIFSIGNALED(*status) && (WTERMSIG(*status) == SIGCONT)) ||
798 if (compatMake && !usePipes && (job->flags & JOB_IGNERR)) {
800 * If output is going to a file and this job is ignoring
801 * errors, arrange to have the exit status sent to the
802 * output file as well.
804 out = fdopen(job->outFd, "w");
806 Punt("Cannot fdopen");
811 if (WIFEXITED(*status)) {
812 DEBUGF(JOB, ("Process %d exited.\n", job->pid));
813 if (WEXITSTATUS(*status) != 0) {
814 if (usePipes && job->node != lastNode) {
815 MESSAGE(out, job->node);
816 lastNode = job->node;
818 (void) fprintf(out, "*** Error code %d%s\n",
819 WEXITSTATUS(*status),
820 (job->flags & JOB_IGNERR) ? "(ignored)" : "");
822 if (job->flags & JOB_IGNERR) {
825 } else if (DEBUG(JOB)) {
826 if (usePipes && job->node != lastNode) {
827 MESSAGE(out, job->node);
828 lastNode = job->node;
830 (void) fprintf(out, "*** Completed successfully\n");
832 } else if (WIFSTOPPED(*status)) {
833 DEBUGF(JOB, ("Process %d stopped.\n", job->pid));
834 if (usePipes && job->node != lastNode) {
835 MESSAGE(out, job->node);
836 lastNode = job->node;
838 if (!(job->flags & JOB_REMIGRATE)) {
839 (void) fprintf(out, "*** Stopped -- signal %d\n",
842 job->flags |= JOB_RESUME;
843 (void)Lst_AtEnd(stoppedJobs, (void *)job);
845 if (job->flags & JOB_REMIGRATE)
850 } else if (WTERMSIG(*status) == SIGCONT) {
852 * If the beastie has continued, shift the Job from the stopped
853 * list to the running one (or re-stop it if concurrency is
854 * exceeded) and go and get another child.
856 if (job->flags & (JOB_RESUME|JOB_REMIGRATE|JOB_RESTART)) {
857 if (usePipes && job->node != lastNode) {
858 MESSAGE(out, job->node);
859 lastNode = job->node;
861 (void) fprintf(out, "*** Continued\n");
863 if (!(job->flags & JOB_CONTINUING)) {
864 DEBUGF(JOB, ("Warning: process %d was not continuing.\n", job->pid));
867 * We don't really want to restart a job from scratch just
868 * because it continued, especially not without killing the
869 * continuing process! That's why this is ifdef'ed out.
875 job->flags &= ~JOB_CONTINUING;
876 Lst_AtEnd(jobs, (void *)job);
878 if (!(job->flags & JOB_REMOTE)) {
879 DEBUGF(JOB, ("Process %d is continuing locally.\n", job->pid));
882 if (nJobs == maxJobs) {
884 DEBUGF(JOB, ("Job queue is full.\n"));
889 if (usePipes && job->node != lastNode) {
890 MESSAGE(out, job->node);
891 lastNode = job->node;
893 (void) fprintf(out, "*** Signal %d\n", WTERMSIG(*status));
900 * Now handle the -B-mode stuff. If the beast still isn't finished,
901 * try and restart the job on the next command. If JobStart says it's
902 * ok, it's ok. If there's an error, this puppy is done.
904 if (compatMake && (WIFEXITED(*status) &&
905 !Lst_IsAtEnd(job->node->commands))) {
906 switch (JobStart(job->node, job->flags & JOB_IGNDOTS, job)) {
912 W_SETEXITSTATUS(status, 1);
916 * If we got back a JOB_FINISHED code, JobStart has already
917 * called Make_Update and freed the job descriptor. We set
918 * done to false here to avoid fake cycles and double frees.
919 * JobStart needs to do the update so we can proceed up the
920 * graph when given the -n flag..
933 (aborting != ABORT_ERROR) &&
934 (aborting != ABORT_INTERRUPT) &&
938 * As long as we aren't aborting and the job didn't return a non-zero
939 * status that we shouldn't ignore, we call Make_Update to update
940 * the parents. In addition, any saved commands for the node are placed
941 * on the .END target.
943 if (job->tailCmds != NULL) {
944 Lst_ForEachFrom(job->node->commands, job->tailCmds,
948 job->node->made = MADE;
949 Make_Update(job->node);
951 } else if (*status != 0) {
959 * Set aborting if any error.
961 if (errors && !keepgoing && (aborting != ABORT_INTERRUPT)) {
963 * If we found any errors in this batch of children and the -k flag
964 * wasn't given, we set the aborting flag so no more jobs get
967 aborting = ABORT_ERROR;
970 if ((aborting == ABORT_ERROR) && Job_Empty())
972 * If we are aborting and the job table is now empty, we finish.
978 *-----------------------------------------------------------------------
980 * Touch the given target. Called by JobStart when the -t flag was
987 * The data modification of the file is changed. In addition, if the
988 * file did not exist, it is created.
989 *-----------------------------------------------------------------------
992 Job_Touch(gn, silent)
993 GNode *gn; /* the node of the file to touch */
994 Boolean silent; /* TRUE if should not print messages */
996 int streamID; /* ID of stream opened to do the touch */
997 struct utimbuf times; /* Times for utime() call */
999 if (gn->type & (OP_JOIN|OP_USE|OP_EXEC|OP_OPTIONAL)) {
1001 * .JOIN, .USE, .ZEROTIME and .OPTIONAL targets are "virtual" targets
1002 * and, as such, shouldn't really be created.
1008 (void) fprintf(stdout, "touch %s\n", gn->name);
1009 (void) fflush(stdout);
1016 if (gn->type & OP_ARCHV) {
1018 } else if (gn->type & OP_LIB) {
1021 char *file = gn->path ? gn->path : gn->name;
1023 times.actime = times.modtime = now;
1024 if (utime(file, ×) < 0){
1025 streamID = open(file, O_RDWR | O_CREAT, 0666);
1027 if (streamID >= 0) {
1031 * Read and write a byte to the file to change the
1032 * modification time, then close the file.
1034 if (read(streamID, &c, 1) == 1) {
1035 (void) lseek(streamID, (off_t)0, SEEK_SET);
1036 (void) write(streamID, &c, 1);
1039 (void) close(streamID);
1041 (void) fprintf(stdout, "*** couldn't touch %s: %s",
1042 file, strerror(errno));
1043 (void) fflush(stdout);
1050 *-----------------------------------------------------------------------
1051 * Job_CheckCommands --
1052 * Make sure the given node has all the commands it needs.
1055 * TRUE if the commands list is/was ok.
1058 * The node will have commands from the .DEFAULT rule added to it
1060 *-----------------------------------------------------------------------
1063 Job_CheckCommands(gn, abortProc)
1064 GNode *gn; /* The target whose commands need
1066 void (*abortProc)(const char *, ...);
1067 /* Function to abort with message */
1069 if (OP_NOP(gn->type) && Lst_IsEmpty(gn->commands) &&
1070 (gn->type & OP_LIB) == 0) {
1072 * No commands. Look for .DEFAULT rule from which we might infer
1075 if ((DEFAULT != NULL) && !Lst_IsEmpty(DEFAULT->commands)) {
1078 * Make only looks for a .DEFAULT if the node was never the
1079 * target of an operator, so that's what we do too. If
1080 * a .DEFAULT was given, we substitute its commands for gn's
1081 * commands and set the IMPSRC variable to be the target's name
1082 * The DEFAULT node acts like a transformation rule, in that
1083 * gn also inherits any attributes or sources attached to
1086 Make_HandleUse(DEFAULT, gn);
1087 Var_Set(IMPSRC, Var_Value(TARGET, gn, &p1), gn);
1089 } else if (Dir_MTime(gn) == 0) {
1091 * The node wasn't the target of an operator we have no .DEFAULT
1092 * rule to go on and the target doesn't already exist. There's
1093 * nothing more we can do for this branch. If the -k flag wasn't
1094 * given, we stop in our tracks, otherwise we just don't update
1095 * this node's parents so they never get examined.
1097 static const char msg[] = "make: don't know how to make";
1099 if (gn->type & OP_OPTIONAL) {
1100 (void) fprintf(stdout, "%s %s(ignored)\n", msg, gn->name);
1101 (void) fflush(stdout);
1102 } else if (keepgoing) {
1103 (void) fprintf(stdout, "%s %s(continuing)\n", msg, gn->name);
1104 (void) fflush(stdout);
1108 if (strcmp(gn->name,"love") == 0)
1109 (*abortProc)("Not war.");
1112 (*abortProc)("%s %s. Stop", msg, gn->name);
1119 #ifdef RMT_WILL_WATCH
1121 *-----------------------------------------------------------------------
1123 * Handle a pipe becoming readable. Callback function for Rmt_Watch
1129 * JobDoOutput is called.
1131 *-----------------------------------------------------------------------
1135 JobLocalInput(stream, job)
1136 int stream; /* Stream that's ready (ignored) */
1137 Job *job; /* Job to which the stream belongs */
1139 JobDoOutput(job, FALSE);
1141 #endif /* RMT_WILL_WATCH */
1144 *-----------------------------------------------------------------------
1146 * Execute the shell for the given job. Called from JobStart and
1153 * A shell is executed, outputs is altered and the Job structure added
1156 *-----------------------------------------------------------------------
1160 Job *job; /* Job to execute */
1163 int cpid; /* ID of new child */
1168 DEBUGF(JOB, ("Running %s %sly\n", job->node->name,
1169 job->flags&JOB_REMOTE?"remote":"local"));
1170 DEBUGF(JOB, ("\tCommand: "));
1171 for (i = 0; argv[i] != NULL; i++) {
1172 DEBUGF(JOB, ("%s ", argv[i]));
1174 DEBUGF(JOB, ("\n"));
1178 * Some jobs produce no output and it's disconcerting to have
1179 * no feedback of their running (since they produce no output, the
1180 * banner with their name in it never appears). This is an attempt to
1181 * provide that feedback, even if nothing follows it.
1183 if ((lastNode != job->node) && (job->flags & JOB_FIRST) &&
1184 !(job->flags & JOB_SILENT)) {
1185 MESSAGE(stdout, job->node);
1186 lastNode = job->node;
1190 if (job->flags & JOB_REMOTE) {
1193 #endif /* RMT_NO_EXEC */
1195 if ((cpid = vfork()) == -1) {
1196 Punt("Cannot fork");
1197 } else if (cpid == 0) {
1200 * Must duplicate the input stream down to the child's input and
1201 * reset it to the beginning (again). Since the stream was marked
1202 * close-on-exec, we must clear that bit in the new input.
1204 if (dup2(FILENO(job->cmdFILE), 0) == -1)
1205 Punt("Cannot dup2: %s", strerror(errno));
1206 (void) fcntl(0, F_SETFD, 0);
1207 (void) lseek(0, (off_t)0, SEEK_SET);
1211 * Set up the child's output to be routed through the pipe
1212 * we've created for it.
1214 if (dup2(job->outPipe, 1) == -1)
1215 Punt("Cannot dup2: %s", strerror(errno));
1218 * We're capturing output in a file, so we duplicate the
1219 * descriptor to the temporary file into the standard
1222 if (dup2(job->outFd, 1) == -1)
1223 Punt("Cannot dup2: %s", strerror(errno));
1226 * The output channels are marked close on exec. This bit was
1227 * duplicated by the dup2 (on some systems), so we have to clear
1228 * it before routing the shell's error output to the same place as
1229 * its standard output.
1231 (void) fcntl(1, F_SETFD, 0);
1232 if (dup2(1, 2) == -1)
1233 Punt("Cannot dup2: %s", strerror(errno));
1237 * We want to switch the child into a different process family so
1238 * we can kill it and all its descendants in one fell swoop,
1239 * by killing its process family, but not commit suicide.
1244 (void) setpgid(0, getpid());
1246 #endif /* USE_PGRP */
1249 if (job->flags & JOB_REMOTE) {
1250 Rmt_Exec(shellPath, argv, FALSE);
1253 (void) execv(shellPath, argv);
1255 (void) write(STDERR_FILENO, "Could not execute shell\n",
1256 sizeof("Could not execute shell"));
1260 long omask = sigblock(sigmask(SIGCHLD));
1264 if (usePipes && (job->flags & JOB_FIRST) ) {
1266 * The first time a job is run for a node, we set the current
1267 * position in the buffer to the beginning and mark another
1268 * stream to watch in the outputs mask
1272 #ifdef RMT_WILL_WATCH
1273 Rmt_Watch(job->inPipe, JobLocalInput, job);
1275 FD_SET(job->inPipe, &outputs);
1276 #endif /* RMT_WILL_WATCH */
1279 if (job->flags & JOB_REMOTE) {
1283 job->rmtID = Rmt_LastID(job->pid);
1288 * XXX: Used to not happen if REMOTE. Why?
1290 if (job->cmdFILE != NULL && job->cmdFILE != stdout) {
1291 (void) fclose(job->cmdFILE);
1292 job->cmdFILE = NULL;
1296 (void) sigsetmask(omask);
1304 * Now the job is actually running, add it to the table.
1307 (void) Lst_AtEnd(jobs, (void *)job);
1308 if (nJobs == maxJobs) {
1314 *-----------------------------------------------------------------------
1316 * Create the argv needed to execute the shell for a given job.
1323 *-----------------------------------------------------------------------
1326 JobMakeArgv(job, argv)
1331 static char args[10]; /* For merged arguments */
1333 argv[0] = shellName;
1336 if ((commandShell->exit && (*commandShell->exit != '-')) ||
1337 (commandShell->echo && (*commandShell->echo != '-')))
1340 * At least one of the flags doesn't have a minus before it, so
1341 * merge them together. Have to do this because the *(&(@*#*&#$#
1342 * Bourne shell thinks its second argument is a file to source.
1343 * Grrrr. Note the ten-character limitation on the combined arguments.
1345 (void)sprintf(args, "-%s%s",
1346 ((job->flags & JOB_IGNERR) ? "" :
1347 (commandShell->exit ? commandShell->exit : "")),
1348 ((job->flags & JOB_SILENT) ? "" :
1349 (commandShell->echo ? commandShell->echo : "")));
1356 if (!(job->flags & JOB_IGNERR) && commandShell->exit) {
1357 argv[argc] = commandShell->exit;
1360 if (!(job->flags & JOB_SILENT) && commandShell->echo) {
1361 argv[argc] = commandShell->echo;
1369 *-----------------------------------------------------------------------
1371 * Restart a job that stopped for some reason.
1377 * jobFull will be set if the job couldn't be run.
1379 *-----------------------------------------------------------------------
1383 Job *job; /* Job to restart */
1389 if (job->flags & JOB_REMIGRATE) {
1392 verboseRemigrates ||
1395 (void) fprintf(stdout, "*** remigrating %x(%s)\n",
1396 job->pid, job->node->name);
1397 (void) fflush(stdout);
1401 if (!Rmt_ReExport(job->pid, job->node, &host)) {
1402 if (verboseRemigrates || DEBUG(JOB)) {
1403 (void) fprintf(stdout, "*** couldn't migrate...\n");
1404 (void) fflush(stdout);
1407 if (nLocal != maxLocal) {
1409 * Job cannot be remigrated, but there's room on the local
1410 * machine, so resume the job and note that another
1411 * local job has started.
1415 verboseRemigrates ||
1418 (void) fprintf(stdout, "*** resuming on local machine\n");
1419 (void) fflush(stdout);
1421 KILL(job->pid, SIGCONT);
1424 job->flags &= ~(JOB_REMIGRATE|JOB_RESUME|JOB_REMOTE);
1425 job->flags |= JOB_CONTINUING;
1427 job->flags &= ~(JOB_REMIGRATE|JOB_RESUME);
1431 * Job cannot be restarted. Mark the table as full and
1432 * place the job back on the list of stopped jobs.
1436 verboseRemigrates ||
1439 (void) fprintf(stdout, "*** holding\n");
1440 (void) fflush(stdout);
1442 (void)Lst_AtFront(stoppedJobs, (void *)job);
1444 DEBUGF(JOB, ("Job queue is full.\n"));
1450 * Clear out the remigrate and resume flags. Set the continuing
1451 * flag so we know later on that the process isn't exiting just
1452 * because of a signal.
1454 job->flags &= ~(JOB_REMIGRATE|JOB_RESUME);
1455 job->flags |= JOB_CONTINUING;
1460 (void)Lst_AtEnd(jobs, (void *)job);
1462 if (nJobs == maxJobs) {
1464 DEBUGF(JOB, ("Job queue is full.\n"));
1466 } else if (job->flags & JOB_RESTART) {
1468 * Set up the control arguments to the shell. This is based on the
1469 * flags set earlier for this job. If the JOB_IGNERR flag is clear,
1470 * the 'exit' flag of the commandShell is used to cause it to exit
1471 * upon receiving an error. If the JOB_SILENT flag is clear, the
1472 * 'echo' flag of the commandShell is used to get it to start echoing
1473 * as soon as it starts processing commands.
1477 JobMakeArgv(job, argv);
1479 DEBUGF(JOB, ("Restarting %s...", job->node->name));
1481 if ((job->node->type&OP_NOEXPORT) ||
1482 (nLocal < maxLocal && runLocalFirst)
1484 || !Rmt_Export(shellPath, argv, job)
1486 || !Rmt_Begin(shellPath, argv, job->node)
1490 if (((nLocal >= maxLocal) && !(job->flags & JOB_SPECIAL))) {
1492 * Can't be exported and not allowed to run locally -- put it
1493 * back on the hold queue and mark the table full
1495 DEBUGF(JOB, ("holding\n"));
1496 (void)Lst_AtFront(stoppedJobs, (void *)job);
1498 DEBUGF(JOB, ("Job queue is full.\n"));
1502 * Job may be run locally.
1504 DEBUGF(JOB, ("running locally\n"));
1505 job->flags &= ~JOB_REMOTE;
1511 * Can be exported. Hooray!
1513 DEBUGF(JOB, ("exporting\n"));
1514 job->flags |= JOB_REMOTE;
1520 * The job has stopped and needs to be restarted. Why it stopped,
1523 DEBUGF(JOB, ("Resuming %s...", job->node->name));
1524 if (((job->flags & JOB_REMOTE) ||
1525 (nLocal < maxLocal) ||
1527 (((job->flags & JOB_SPECIAL) &&
1528 (job->node->type & OP_NOEXPORT)) &&
1529 (maxLocal == 0))) &&
1531 ((job->flags & JOB_SPECIAL) &&
1532 (maxLocal == 0))) &&
1537 * If the job is remote, it's ok to resume it as long as the
1538 * maximum concurrency won't be exceeded. If it's local and
1539 * we haven't reached the local concurrency limit already (or the
1540 * job must be run locally and maxLocal is 0), it's also ok to
1546 #ifdef RMT_WANTS_SIGNALS
1547 if (job->flags & JOB_REMOTE) {
1548 error = !Rmt_Signal(job, SIGCONT);
1550 #endif /* RMT_WANTS_SIGNALS */
1551 error = (KILL(job->pid, SIGCONT) != 0);
1555 * Make sure the user knows we've continued the beast and
1556 * actually put the thing in the job table.
1558 job->flags |= JOB_CONTINUING;
1559 W_SETTERMSIG(&status, SIGCONT);
1560 JobFinish(job, &status);
1562 job->flags &= ~(JOB_RESUME|JOB_CONTINUING);
1563 DEBUGF(JOB, ("done\n"));
1565 Error("couldn't resume %s: %s",
1566 job->node->name, strerror(errno));
1568 W_SETEXITSTATUS(&status, 1);
1569 JobFinish(job, &status);
1573 * Job cannot be restarted. Mark the table as full and
1574 * place the job back on the list of stopped jobs.
1576 DEBUGF(JOB, ("table full\n"));
1577 (void) Lst_AtFront(stoppedJobs, (void *)job);
1579 DEBUGF(JOB, ("Job queue is full.\n"));
1585 *-----------------------------------------------------------------------
1587 * Start a target-creation process going for the target described
1588 * by the graph node gn.
1591 * JOB_ERROR if there was an error in the commands, JOB_FINISHED
1592 * if there isn't actually anything left to do for the job and
1593 * JOB_RUNNING if the job has been started.
1596 * A new Job node is created and added to the list of running
1597 * jobs. PMake is forked and a child shell created.
1598 *-----------------------------------------------------------------------
1601 JobStart(gn, flags, previous)
1602 GNode *gn; /* target to create */
1603 int flags; /* flags for the job to override normal ones.
1604 * e.g. JOB_SPECIAL or JOB_IGNDOTS */
1605 Job *previous; /* The previous Job structure for this node,
1608 Job *job; /* new job descriptor */
1609 char *argv[4]; /* Argument vector to shell */
1610 Boolean cmdsOK; /* true if the nodes commands were all right */
1611 Boolean local; /* Set true if the job was run locally */
1612 Boolean noExec; /* Set true if we decide not to run the job */
1613 int tfd; /* File descriptor for temp file */
1615 if (previous != NULL) {
1616 previous->flags &= ~(JOB_FIRST|JOB_IGNERR|JOB_SILENT|JOB_REMOTE);
1619 job = (Job *) emalloc(sizeof(Job));
1624 job->tailCmds = NULL;
1627 * Set the initial value of the flags for this job based on the global
1628 * ones and the node's attributes... Any flags supplied by the caller
1629 * are also added to the field.
1632 if (Targ_Ignore(gn)) {
1633 job->flags |= JOB_IGNERR;
1635 if (Targ_Silent(gn)) {
1636 job->flags |= JOB_SILENT;
1638 job->flags |= flags;
1641 * Check the commands now so any attributes from .DEFAULT have a chance
1642 * to migrate to the node
1644 if (!compatMake && job->flags & JOB_FIRST) {
1645 cmdsOK = Job_CheckCommands(gn, Error);
1651 * If the -n flag wasn't given, we open up OUR (not the child's)
1652 * temporary file to stuff commands in it. The thing is rd/wr so we don't
1653 * need to reopen it to feed it to the shell. If the -n flag *was* given,
1654 * we just set the file to be stdout. Cute, huh?
1656 if ((gn->type & OP_MAKE) || (!noExecute && !touchFlag)) {
1658 * We're serious here, but if the commands were bogus, we're
1665 (void) strcpy(tfile, TMPPAT);
1666 if ((tfd = mkstemp(tfile)) == -1)
1667 Punt("Cannot create temp file: %s", strerror(errno));
1668 job->cmdFILE = fdopen(tfd, "w+");
1670 if (job->cmdFILE == NULL) {
1672 Punt("Could not open %s", tfile);
1674 (void) fcntl(FILENO(job->cmdFILE), F_SETFD, 1);
1676 * Send the commands to the command file, flush all its buffers then
1677 * rewind and remove the thing.
1682 * used to be backwards; replace when start doing multiple commands
1687 * Be compatible: If this is the first time for this node,
1688 * verify its commands are ok and open the commands list for
1689 * sequential access by later invocations of JobStart.
1690 * Once that is done, we take the next command off the list
1691 * and print it to the command file. If the command was an
1692 * ellipsis, note that there's nothing more to execute.
1694 if ((job->flags&JOB_FIRST) && (Lst_Open(gn->commands) != SUCCESS)){
1697 LstNode ln = Lst_Next(gn->commands);
1700 JobPrintCommand((void *) Lst_Datum(ln),
1704 Lst_Close(gn->commands);
1706 if (noExec && !(job->flags & JOB_FIRST)) {
1708 * If we're not going to execute anything, the job
1709 * is done and we need to close down the various
1710 * file descriptors we've opened for output, then
1711 * call JobDoOutput to catch the final characters or
1712 * send the file to the screen... Note that the i/o streams
1713 * are only open if this isn't the first job.
1714 * Note also that this could not be done in
1715 * Job_CatchChildren b/c it wasn't clear if there were
1716 * more commands to execute or not...
1723 * We can do all the commands at once. hooray for sanity
1726 Lst_ForEach(gn->commands, JobPrintCommand, (void *)job);
1729 * If we didn't print out any commands to the shell script,
1730 * there's not much point in executing the shell, is there?
1732 if (numCommands == 0) {
1736 } else if (noExecute) {
1738 * Not executing anything -- just print all the commands to stdout
1739 * in one fell swoop. This will still set up job->tailCmds correctly.
1741 if (lastNode != gn) {
1742 MESSAGE(stdout, gn);
1745 job->cmdFILE = stdout;
1747 * Only print the commands if they're ok, but don't die if they're
1748 * not -- just let the user know they're bad and keep going. It
1749 * doesn't do any harm in this case and may do some good.
1752 Lst_ForEach(gn->commands, JobPrintCommand, (void *)job);
1755 * Don't execute the shell, thank you.
1760 * Just touch the target and note that no shell should be executed.
1761 * Set cmdFILE to stdout to make life easier. Check the commands, too,
1762 * but don't die if they're no good -- it does no harm to keep working
1765 job->cmdFILE = stdout;
1766 Job_Touch(gn, job->flags&JOB_SILENT);
1771 * If we're not supposed to execute a shell, don't.
1775 * Unlink and close the command file if we opened one
1777 if (job->cmdFILE != stdout) {
1778 if (job->cmdFILE != NULL)
1779 (void) fclose(job->cmdFILE);
1781 (void) fflush(stdout);
1785 * We only want to work our way up the graph if we aren't here because
1786 * the commands for the job were no good.
1789 if (aborting == 0) {
1790 if (job->tailCmds != NULL) {
1791 Lst_ForEachFrom(job->node->commands, job->tailCmds,
1795 job->node->made = MADE;
1796 Make_Update(job->node);
1799 return(JOB_FINISHED);
1805 (void) fflush(job->cmdFILE);
1809 * Set up the control arguments to the shell. This is based on the flags
1810 * set earlier for this job.
1812 JobMakeArgv(job, argv);
1815 * If we're using pipes to catch output, create the pipe by which we'll
1816 * get the shell's output. If we're using files, print out that we're
1817 * starting a job and then set up its temporary-file name.
1819 if (!compatMake || (job->flags & JOB_FIRST)) {
1823 Punt("Cannot create pipe: %s", strerror(errno));
1824 job->inPipe = fd[0];
1825 job->outPipe = fd[1];
1826 (void) fcntl(job->inPipe, F_SETFD, 1);
1827 (void) fcntl(job->outPipe, F_SETFD, 1);
1829 (void) fprintf(stdout, "Remaking `%s'\n", gn->name);
1830 (void) fflush(stdout);
1831 (void) strcpy(job->outFile, TMPPAT);
1832 if ((job->outFd = mkstemp(job->outFile)) == -1)
1833 Punt("cannot create temp file: %s", strerror(errno));
1834 (void) fcntl(job->outFd, F_SETFD, 1);
1839 if (!(gn->type & OP_NOEXPORT) && !(runLocalFirst && nLocal < maxLocal)) {
1841 local = !Rmt_Export(shellPath, argv, job);
1843 local = !Rmt_Begin(shellPath, argv, job->node);
1844 #endif /* RMT_NO_EXEC */
1846 job->flags |= JOB_REMOTE;
1852 if (local && (((nLocal >= maxLocal) &&
1853 !(job->flags & JOB_SPECIAL) &&
1855 (!(gn->type & OP_NOEXPORT) || (maxLocal != 0))
1862 * The job can only be run locally, but we've hit the limit of
1863 * local concurrency, so put the job on hold until some other job
1864 * finishes. Note that the special jobs (.BEGIN, .INTERRUPT and .END)
1865 * may be run locally even when the local limit has been reached
1866 * (e.g. when maxLocal == 0), though they will be exported if at
1867 * all possible. In addition, any target marked with .NOEXPORT will
1868 * be run locally if maxLocal is 0.
1872 DEBUGF(JOB, ("Can only run job locally.\n"));
1873 job->flags |= JOB_RESTART;
1874 (void) Lst_AtEnd(stoppedJobs, (void *)job);
1876 if ((nLocal >= maxLocal) && local) {
1878 * If we're running this job locally as a special case (see above),
1879 * at least say the table is full.
1882 DEBUGF(JOB, ("Local job queue is full.\n"));
1886 return(JOB_RUNNING);
1890 JobOutput(job, cp, endp, msg)
1897 if (commandShell->noPrint) {
1898 ecp = Str_FindSubstring(cp, commandShell->noPrint);
1899 while (ecp != NULL) {
1902 if (msg && job->node != lastNode) {
1903 MESSAGE(stdout, job->node);
1904 lastNode = job->node;
1907 * The only way there wouldn't be a newline after
1908 * this line is if it were the last in the buffer.
1909 * however, since the non-printable comes after it,
1910 * there must be a newline, so we don't print one.
1912 (void) fprintf(stdout, "%s", cp);
1913 (void) fflush(stdout);
1915 cp = ecp + commandShell->noPLen;
1918 * Still more to print, look again after skipping
1919 * the whitespace following the non-printable
1923 while (*cp == ' ' || *cp == '\t' || *cp == '\n') {
1926 ecp = Str_FindSubstring(cp, commandShell->noPrint);
1936 *-----------------------------------------------------------------------
1938 * This function is called at different times depending on
1939 * whether the user has specified that output is to be collected
1940 * via pipes or temporary files. In the former case, we are called
1941 * whenever there is something to read on the pipe. We collect more
1942 * output from the given job and store it in the job's outBuf. If
1943 * this makes up a line, we print it tagged by the job's identifier,
1945 * If output has been collected in a temporary file, we open the
1946 * file and read it line by line, transfering it to our own
1947 * output channel until the file is empty. At which point we
1948 * remove the temporary file.
1949 * In both cases, however, we keep our figurative eye out for the
1950 * 'noPrint' line for the shell from which the output came. If
1951 * we recognize a line, we don't print it. If the command is not
1952 * alone on the line (the character after it is not \0 or \n), we
1953 * do print whatever follows it.
1959 * curPos may be shifted as may the contents of outBuf.
1960 *-----------------------------------------------------------------------
1963 JobDoOutput(job, finish)
1964 Job *job; /* the job whose output needs printing */
1965 Boolean finish; /* TRUE if this is the last time we'll be
1966 * called for this job */
1968 Boolean gotNL = FALSE; /* true if got a newline */
1969 Boolean fbuf; /* true if our buffer filled up */
1970 int nr; /* number of bytes read */
1971 int i; /* auxiliary index into outBuf */
1972 int max; /* limit for i (end of current data) */
1973 int nRead; /* (Temporary) number of bytes read */
1975 FILE *oFILE; /* Stream pointer to shell's output file */
1981 * Read as many bytes as will fit in the buffer.
1987 nRead = read(job->inPipe, &job->outBuf[job->curPos],
1988 JOB_BUFSIZE - job->curPos);
1990 DEBUGF(JOB, ("JobDoOutput(piperead)"));
1997 * If we hit the end-of-file (the job is dead), we must flush its
1998 * remaining output, so pretend we read a newline if there's any
1999 * output remaining in the buffer.
2000 * Also clear the 'finish' flag so we stop looping.
2002 if ((nr == 0) && (job->curPos != 0)) {
2003 job->outBuf[job->curPos] = '\n';
2006 } else if (nr == 0) {
2011 * Look for the last newline in the bytes we just got. If there is
2012 * one, break out of the loop with 'i' as its index and gotNL set
2015 max = job->curPos + nr;
2016 for (i = job->curPos + nr - 1; i >= job->curPos; i--) {
2017 if (job->outBuf[i] == '\n') {
2020 } else if (job->outBuf[i] == '\0') {
2024 job->outBuf[i] = ' ';
2030 if (job->curPos == JOB_BUFSIZE) {
2032 * If we've run out of buffer space, we have no choice
2033 * but to print the stuff. sigh.
2039 if (gotNL || fbuf) {
2041 * Need to send the output to the screen. Null terminate it
2042 * first, overwriting the newline character if there was one.
2043 * So long as the line isn't one we should filter (according
2044 * to the shell description), we print the line, preceded
2045 * by a target banner if this target isn't the same as the
2046 * one for which we last printed something.
2047 * The rest of the data in the buffer are then shifted down
2048 * to the start of the buffer and curPos is set accordingly.
2050 job->outBuf[i] = '\0';
2051 if (i >= job->curPos) {
2054 cp = JobOutput(job, job->outBuf, &job->outBuf[i], FALSE);
2057 * There's still more in that thar buffer. This time, though,
2058 * we know there's no newline at the end, so we add one of
2059 * our own free will.
2062 if (job->node != lastNode) {
2063 MESSAGE(stdout, job->node);
2064 lastNode = job->node;
2066 (void) fprintf(stdout, "%s%s", cp, gotNL ? "\n" : "");
2067 (void) fflush(stdout);
2071 /* shift the remaining characters down */
2072 (void) memcpy(job->outBuf, &job->outBuf[i + 1], max - (i + 1));
2073 job->curPos = max - (i + 1);
2077 * We have written everything out, so we just start over
2078 * from the start of the buffer. No copying. No nothing.
2085 * If the finish flag is true, we must loop until we hit
2086 * end-of-file on the pipe. This is guaranteed to happen
2087 * eventually since the other end of the pipe is now closed
2088 * (we closed it explicitly and the child has exited). When
2089 * we do get an EOF, finish will be set FALSE and we'll fall
2096 * We've been called to retrieve the output of the job from the
2097 * temporary file where it's been squirreled away. This consists of
2098 * opening the file, reading the output line by line, being sure not
2099 * to print the noPrint line for the shell we used, then close and
2100 * remove the temporary file. Very simple.
2102 * Change to read in blocks and do FindSubString type things as for
2103 * pipes? That would allow for "@echo -n..."
2105 oFILE = fopen(job->outFile, "r");
2106 if (oFILE != NULL) {
2107 (void) fprintf(stdout, "Results of making %s:\n", job->node->name);
2108 (void) fflush(stdout);
2109 while (fgets(inLine, sizeof(inLine), oFILE) != NULL) {
2110 char *cp, *endp, *oendp;
2113 oendp = endp = inLine + strlen(inLine);
2114 if (endp[-1] == '\n') {
2117 cp = JobOutput(job, inLine, endp, FALSE);
2120 * There's still more in that thar buffer. This time, though,
2121 * we know there's no newline at the end, so we add one of
2122 * our own free will.
2124 (void) fprintf(stdout, "%s", cp);
2125 (void) fflush(stdout);
2126 if (endp != oendp) {
2127 (void) fprintf(stdout, "\n");
2128 (void) fflush(stdout);
2131 (void) fclose(oFILE);
2132 (void) eunlink(job->outFile);
2138 *-----------------------------------------------------------------------
2139 * Job_CatchChildren --
2140 * Handle the exit of a child. Called from Make_Make.
2146 * The job descriptor is removed from the list of children.
2149 * We do waits, blocking or not, according to the wisdom of our
2150 * caller, until there are no more children to report. For each
2151 * job, call JobFinish to finish things off. This will take care of
2152 * putting jobs on the stoppedJobs queue.
2154 *-----------------------------------------------------------------------
2157 Job_CatchChildren(block)
2158 Boolean block; /* TRUE if should block on the wait. */
2160 int pid; /* pid of dead child */
2161 Job *job; /* job descriptor for dead child */
2162 LstNode jnode; /* list element for finding job */
2163 int status; /* Exit/termination status */
2166 * Don't even bother if we know there's no one around.
2172 while ((pid = waitpid((pid_t) -1, &status,
2173 (block?0:WNOHANG)|WUNTRACED)) > 0)
2175 DEBUGF(JOB, ("Process %d exited or stopped.\n", pid));
2177 jnode = Lst_Find(jobs, (void *)&pid, JobCmpPid);
2179 if (jnode == NULL) {
2180 if (WIFSIGNALED(status) && (WTERMSIG(status) == SIGCONT)) {
2181 jnode = Lst_Find(stoppedJobs, (void *) &pid, JobCmpPid);
2182 if (jnode == NULL) {
2183 Error("Resumed child (%d) not in table", pid);
2186 job = (Job *)Lst_Datum(jnode);
2187 (void) Lst_Remove(stoppedJobs, jnode);
2189 Error("Child (%d) not in table?", pid);
2193 job = (Job *) Lst_Datum(jnode);
2194 (void) Lst_Remove(jobs, jnode);
2196 DEBUGF(JOB, ("Job queue is no longer full.\n"));
2199 if (!(job->flags & JOB_REMOTE)) {
2200 DEBUGF(JOB, ("Job queue has one fewer local process.\n"));
2208 JobFinish(job, &status);
2213 *-----------------------------------------------------------------------
2214 * Job_CatchOutput --
2215 * Catch the output from our children, if we're using
2216 * pipes do so. Otherwise just block time until we get a
2217 * signal (most likely a SIGCHLD) since there's no point in
2218 * just spinning when there's nothing to do and the reaping
2219 * of a child can wait for a while.
2225 * Output is read from pipes if we're piping.
2226 * -----------------------------------------------------------------------
2232 struct timeval timeout;
2236 #ifdef RMT_WILL_WATCH
2237 int pnJobs; /* Previous nJobs */
2240 (void) fflush(stdout);
2241 #ifdef RMT_WILL_WATCH
2245 * It is possible for us to be called with nJobs equal to 0. This happens
2246 * if all the jobs finish and a job that is stopped cannot be run
2247 * locally (eg if maxLocal is 0) and cannot be exported. The job will
2248 * be placed back on the stoppedJobs queue, Job_Empty() will return false,
2249 * Make_Run will call us again when there's nothing for which to wait.
2250 * nJobs never changes, so we loop forever. Hence the check. It could
2251 * be argued that we should sleep for a bit so as not to swamp the
2252 * exportation system with requests. Perhaps we should.
2254 * NOTE: IT IS THE RESPONSIBILITY OF Rmt_Wait TO CALL Job_CatchChildren
2255 * IN A TIMELY FASHION TO CATCH ANY LOCALLY RUNNING JOBS THAT EXIT.
2256 * It may use the variable nLocal to determine if it needs to call
2257 * Job_CatchChildren (if nLocal is 0, there's nothing for which to
2260 while (nJobs != 0 && pnJobs == nJobs) {
2266 timeout.tv_sec = SEL_SEC;
2267 timeout.tv_usec = SEL_USEC;
2269 if ((nfds = select(FD_SETSIZE, &readfds, (fd_set *) 0,
2270 (fd_set *) 0, &timeout)) <= 0)
2273 if (Lst_Open(jobs) == FAILURE) {
2274 Punt("Cannot open job table");
2276 while (nfds && (ln = Lst_Next(jobs)) != NULL) {
2277 job = (Job *) Lst_Datum(ln);
2278 if (FD_ISSET(job->inPipe, &readfds)) {
2279 JobDoOutput(job, FALSE);
2286 #endif /* RMT_WILL_WATCH */
2290 *-----------------------------------------------------------------------
2292 * Start the creation of a target. Basically a front-end for
2293 * JobStart used by the Make module.
2299 * Another job is started.
2301 *-----------------------------------------------------------------------
2307 (void) JobStart(gn, 0, NULL);
2311 *-----------------------------------------------------------------------
2313 * Initialize the process module
2319 * lists and counters are initialized
2320 *-----------------------------------------------------------------------
2323 Job_Init(maxproc, maxlocal)
2324 int maxproc; /* the greatest number of jobs which may be
2325 * running at one time */
2326 int maxlocal; /* the greatest number of local jobs which may
2327 * be running at once. */
2329 GNode *begin; /* node for commands to do at the very start */
2331 jobs = Lst_Init(FALSE);
2332 stoppedJobs = Lst_Init(FALSE);
2334 maxLocal = maxlocal;
2344 if (maxJobs == 1 || beVerbose == 0
2350 * If only one job can run at a time, there's no need for a banner,
2358 if (shellPath == NULL) {
2360 * The user didn't specify a shell to use, so we are using the
2361 * default one... Both the absolute path and the last component
2362 * must be set. The last component is taken from the 'name' field
2363 * of the default shell description pointed-to by commandShell.
2364 * All default shells are located in _PATH_DEFSHELLDIR.
2366 shellName = commandShell->name;
2367 shellPath = str_concat(_PATH_DEFSHELLDIR, shellName, STR_ADDSLASH);
2370 if (commandShell->exit == NULL) {
2371 commandShell->exit = "";
2373 if (commandShell->echo == NULL) {
2374 commandShell->echo = "";
2378 * Catch the four signals that POSIX specifies if they aren't ignored.
2379 * JobPassSig will take care of calling JobInterrupt if appropriate.
2381 if (signal(SIGINT, SIG_IGN) != SIG_IGN) {
2382 (void) signal(SIGINT, JobPassSig);
2384 if (signal(SIGHUP, SIG_IGN) != SIG_IGN) {
2385 (void) signal(SIGHUP, JobPassSig);
2387 if (signal(SIGQUIT, SIG_IGN) != SIG_IGN) {
2388 (void) signal(SIGQUIT, JobPassSig);
2390 if (signal(SIGTERM, SIG_IGN) != SIG_IGN) {
2391 (void) signal(SIGTERM, JobPassSig);
2394 * There are additional signals that need to be caught and passed if
2395 * either the export system wants to be told directly of signals or if
2396 * we're giving each job its own process group (since then it won't get
2397 * signals from the terminal driver as we own the terminal)
2399 #if defined(RMT_WANTS_SIGNALS) || defined(USE_PGRP)
2400 if (signal(SIGTSTP, SIG_IGN) != SIG_IGN) {
2401 (void) signal(SIGTSTP, JobPassSig);
2403 if (signal(SIGTTOU, SIG_IGN) != SIG_IGN) {
2404 (void) signal(SIGTTOU, JobPassSig);
2406 if (signal(SIGTTIN, SIG_IGN) != SIG_IGN) {
2407 (void) signal(SIGTTIN, JobPassSig);
2409 if (signal(SIGWINCH, SIG_IGN) != SIG_IGN) {
2410 (void) signal(SIGWINCH, JobPassSig);
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 *-----------------------------------------------------------------------
2499 char *name; /* Final component of shell path */
2501 Shell *sh; /* Pointer into shells table */
2502 Shell *match; /* Longest-matching shell */
2507 eoname = name + strlen(name);
2511 for (sh = shells; sh->name != NULL; sh++) {
2512 for (cp1 = eoname - strlen(sh->name), cp2 = sh->name;
2513 *cp1 != '\0' && *cp1 == *cp2;
2519 } else if (match == NULL || strlen(match->name) < strlen(sh->name)) {
2523 return(match == NULL ? sh : match);
2527 *-----------------------------------------------------------------------
2529 * Parse a shell specification and set up commandShell, shellPath
2530 * and shellName appropriately.
2533 * FAILURE if the specification was incorrect.
2536 * commandShell points to a Shell structure (either predefined or
2537 * created from the shell spec), shellPath is the full path of the
2538 * shell described by commandShell, while shellName is just the
2539 * final component of shellPath.
2542 * A shell specification consists of a .SHELL target, with dependency
2543 * operator, followed by a series of blank-separated words. Double
2544 * quotes can be used to use blanks in words. A backslash escapes
2545 * anything (most notably a double-quote and a space) and
2546 * provides the functionality it does in C. Each word consists of
2547 * keyword and value separated by an equal sign. There should be no
2548 * unnecessary spaces in the word. The keywords are as follows:
2549 * name Name of shell.
2550 * path Location of shell. Overrides "name" if given
2551 * quiet Command to turn off echoing.
2552 * echo Command to turn echoing on
2553 * filter Result of turning off echoing that shouldn't be
2555 * echoFlag Flag to turn echoing on at the start
2556 * errFlag Flag to turn error checking on at the start
2557 * hasErrCtl True if shell has error checking control
2558 * check Command to turn on error checking if hasErrCtl
2559 * is TRUE or template of command to echo a command
2560 * for which error checking is off if hasErrCtl is
2562 * ignore Command to turn off error checking if hasErrCtl
2563 * is TRUE or template of command to execute a
2564 * command so as to ignore any errors it returns if
2565 * hasErrCtl is FALSE.
2567 *-----------------------------------------------------------------------
2570 Job_ParseShell(line)
2571 char *line; /* The shell spec */
2579 Boolean fullSpec = FALSE;
2581 while (isspace((unsigned char) *line)) {
2584 words = brk_string(line, &wordCount, TRUE);
2586 memset(&newShell, 0, sizeof(newShell));
2589 * Parse the specification by keyword
2591 for (path = NULL, argc = wordCount - 1, argv = words + 1;
2594 if (strncmp(*argv, "path=", 5) == 0) {
2596 } else if (strncmp(*argv, "name=", 5) == 0) {
2597 newShell.name = &argv[0][5];
2599 if (strncmp(*argv, "quiet=", 6) == 0) {
2600 newShell.echoOff = &argv[0][6];
2601 } else if (strncmp(*argv, "echo=", 5) == 0) {
2602 newShell.echoOn = &argv[0][5];
2603 } else if (strncmp(*argv, "filter=", 7) == 0) {
2604 newShell.noPrint = &argv[0][7];
2605 newShell.noPLen = strlen(newShell.noPrint);
2606 } else if (strncmp(*argv, "echoFlag=", 9) == 0) {
2607 newShell.echo = &argv[0][9];
2608 } else if (strncmp(*argv, "errFlag=", 8) == 0) {
2609 newShell.exit = &argv[0][8];
2610 } else if (strncmp(*argv, "hasErrCtl=", 10) == 0) {
2611 char c = argv[0][10];
2612 newShell.hasErrCtl = !((c != 'Y') && (c != 'y') &&
2613 (c != 'T') && (c != 't'));
2614 } else if (strncmp(*argv, "check=", 6) == 0) {
2615 newShell.errCheck = &argv[0][6];
2616 } else if (strncmp(*argv, "ignore=", 7) == 0) {
2617 newShell.ignErr = &argv[0][7];
2619 Parse_Error(PARSE_FATAL, "Unknown keyword \"%s\"",
2629 * If no path was given, the user wants one of the pre-defined shells,
2630 * yes? So we find the one s/he wants with the help of JobMatchShell
2631 * and set things up the right way. shellPath will be set up by
2634 if (newShell.name == NULL) {
2635 Parse_Error(PARSE_FATAL, "Neither path nor name specified");
2638 commandShell = JobMatchShell(newShell.name);
2639 shellName = newShell.name;
2643 * The user provided a path. If s/he gave nothing else (fullSpec is
2644 * FALSE), try and find a matching shell in the ones we know of.
2645 * Else we just take the specification at its word and copy it
2646 * to a new location. In either case, we need to record the
2647 * path the user gave for the shell.
2650 path = strrchr(path, '/');
2656 if (newShell.name != NULL) {
2657 shellName = newShell.name;
2662 commandShell = JobMatchShell(shellName);
2664 commandShell = (Shell *) emalloc(sizeof(Shell));
2665 *commandShell = newShell;
2669 if (commandShell->echoOn && commandShell->echoOff) {
2670 commandShell->hasEchoCtl = TRUE;
2673 if (!commandShell->hasErrCtl) {
2674 if (commandShell->errCheck == NULL) {
2675 commandShell->errCheck = "";
2677 if (commandShell->ignErr == NULL) {
2678 commandShell->ignErr = "%s\n";
2686 *-----------------------------------------------------------------------
2688 * Handle the receipt of an interrupt.
2694 * All children are killed. Another job will be started if the
2695 * .INTERRUPT target was given.
2696 *-----------------------------------------------------------------------
2699 JobInterrupt(runINTERRUPT, signo)
2700 int runINTERRUPT; /* Non-zero if commands for the .INTERRUPT
2701 * target should be executed */
2702 int signo; /* signal received */
2704 LstNode ln; /* element in job table */
2705 Job *job = NULL; /* job descriptor in that element */
2706 GNode *interrupt; /* the node describing the .INTERRUPT target */
2708 aborting = ABORT_INTERRUPT;
2710 (void) Lst_Open(jobs);
2711 while ((ln = Lst_Next(jobs)) != NULL) {
2712 job = (Job *) Lst_Datum(ln);
2714 if (!Targ_Precious(job->node)) {
2715 char *file = (job->node->path == NULL ?
2718 if (!noExecute && eunlink(file) != -1) {
2719 Error("*** %s removed", file);
2722 #ifdef RMT_WANTS_SIGNALS
2723 if (job->flags & JOB_REMOTE) {
2725 * If job is remote, let the Rmt module do the killing.
2727 if (!Rmt_Signal(job, signo)) {
2729 * If couldn't kill the thing, finish it out now with an
2730 * error code, since no exit report will come in likely.
2734 status.w_status = 0;
2735 status.w_retcode = 1;
2736 JobFinish(job, &status);
2738 } else if (job->pid) {
2739 KILL(job->pid, signo);
2743 DEBUGF(JOB, ("JobInterrupt passing signal to child %d.\n",
2745 KILL(job->pid, signo);
2747 #endif /* RMT_WANTS_SIGNALS */
2751 (void)Lst_Open(stoppedJobs);
2752 while ((ln = Lst_Next(stoppedJobs)) != NULL) {
2753 job = (Job *) Lst_Datum(ln);
2755 if (job->flags & JOB_RESTART) {
2756 DEBUGF(JOB, "JobInterrupt skipping job on stopped queue"
2757 "-- it was waiting to be restarted.\n");
2760 if (!Targ_Precious(job->node)) {
2761 char *file = (job->node->path == NULL ?
2764 if (eunlink(file) == 0) {
2765 Error("*** %s removed", file);
2769 * Resume the thing so it will take the signal.
2771 DEBUGF(JOB, ("JobInterrupt passing CONT to stopped child %d.\n", job->pid));
2772 KILL(job->pid, SIGCONT);
2773 #ifdef RMT_WANTS_SIGNALS
2774 if (job->flags & JOB_REMOTE) {
2776 * If job is remote, let the Rmt module do the killing.
2778 if (!Rmt_Signal(job, SIGINT)) {
2780 * If couldn't kill the thing, finish it out now with an
2781 * error code, since no exit report will come in likely.
2784 status.w_status = 0;
2785 status.w_retcode = 1;
2786 JobFinish(job, &status);
2788 } else if (job->pid) {
2789 DEBUGF(JOB, "JobInterrupt passing interrupt to stopped child %d.\n",
2791 KILL(job->pid, SIGINT);
2793 #endif /* RMT_WANTS_SIGNALS */
2796 Lst_Close(stoppedJobs);
2798 if (runINTERRUPT && !touchFlag) {
2799 interrupt = Targ_FindNode(".INTERRUPT", TARG_NOCREATE);
2800 if (interrupt != NULL) {
2801 ignoreErrors = FALSE;
2803 JobStart(interrupt, JOB_IGNDOTS, (Job *)0);
2806 #ifndef RMT_WILL_WATCH
2807 Job_CatchChildren(!usePipes);
2808 #endif /* RMT_WILL_WATCH */
2815 *-----------------------------------------------------------------------
2817 * Do final processing such as the running of the commands
2818 * attached to the .END target.
2821 * Number of errors reported.
2822 *-----------------------------------------------------------------------
2827 if (postCommands != NULL && !Lst_IsEmpty(postCommands->commands)) {
2829 Error("Errors reported so .END ignored");
2831 JobStart(postCommands, JOB_SPECIAL | JOB_IGNDOTS, NULL);
2835 #ifndef RMT_WILL_WATCH
2836 Job_CatchChildren(!usePipes);
2837 #endif /* RMT_WILL_WATCH */
2845 *-----------------------------------------------------------------------
2847 * Waits for all running jobs to finish and returns. Sets 'aborting'
2848 * to ABORT_WAIT to prevent other jobs from starting.
2854 * Currently running jobs finish.
2856 *-----------------------------------------------------------------------
2861 aborting = ABORT_WAIT;
2862 while (nJobs != 0) {
2864 #ifndef RMT_WILL_WATCH
2865 Job_CatchChildren(!usePipes);
2866 #endif /* RMT_WILL_WATCH */
2872 *-----------------------------------------------------------------------
2874 * Abort all currently running jobs without handling output or anything.
2875 * This function is to be called only in the event of a major
2876 * error. Most definitely NOT to be called from JobInterrupt.
2882 * All children are killed, not just the firstborn
2883 *-----------------------------------------------------------------------
2888 LstNode ln; /* element in job table */
2889 Job *job; /* the job descriptor in that element */
2892 aborting = ABORT_ERROR;
2896 (void) Lst_Open(jobs);
2897 while ((ln = Lst_Next(jobs)) != NULL) {
2898 job = (Job *) Lst_Datum(ln);
2901 * kill the child process with increasingly drastic signals to make
2902 * darn sure it's dead.
2904 #ifdef RMT_WANTS_SIGNALS
2905 if (job->flags & JOB_REMOTE) {
2906 Rmt_Signal(job, SIGINT);
2907 Rmt_Signal(job, SIGKILL);
2909 KILL(job->pid, SIGINT);
2910 KILL(job->pid, SIGKILL);
2913 KILL(job->pid, SIGINT);
2914 KILL(job->pid, SIGKILL);
2915 #endif /* RMT_WANTS_SIGNALS */
2920 * Catch as many children as want to report in at first, then give up
2922 while (waitpid((pid_t) -1, &foo, WNOHANG) > 0)
2928 *-----------------------------------------------------------------------
2929 * JobFlagForMigration --
2930 * Handle the eviction of a child. Called from RmtStatusChange.
2931 * Flags the child as remigratable and then suspends it.
2937 * The job descriptor is flagged for remigration.
2939 *-----------------------------------------------------------------------
2942 JobFlagForMigration(hostID)
2943 int hostID; /* ID of host we used, for matching children. */
2945 Job *job; /* job descriptor for dead child */
2946 LstNode jnode; /* list element for finding job */
2948 DEBUGF(JOB, ("JobFlagForMigration(%d) called.\n", hostID));
2949 jnode = Lst_Find(jobs, (void *)hostID, JobCmpRmtID);
2951 if (jnode == NULL) {
2952 jnode = Lst_Find(stoppedJobs, (void *)hostID, JobCmpRmtID);
2953 if (jnode == NULL) {
2955 Error("Evicting host(%d) not in table", hostID);
2960 job = (Job *) Lst_Datum(jnode);
2962 DEBUGF(JOB, ("JobFlagForMigration(%d) found job '%s'.\n", hostID, job->node->name));
2964 KILL(job->pid, SIGSTOP);
2966 job->flags |= JOB_REMIGRATE;
2972 *-----------------------------------------------------------------------
2974 * Tries to restart stopped jobs if there are slots available.
2975 * Note that this tries to restart them regardless of pending errors.
2976 * It's not good to leave stopped jobs lying around!
2982 * Resumes(and possibly migrates) jobs.
2984 *-----------------------------------------------------------------------
2989 while (!jobFull && !Lst_IsEmpty(stoppedJobs)) {
2990 DEBUGF(JOB, ("Job queue is not full. Restarting a stopped job.\n"));
2991 JobRestart((Job *)Lst_DeQueue(stoppedJobs));