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>
110 #include <sys/event.h>
112 #include <sys/wait.h>
125 #include "pathnames.h"
130 # define STATIC static
134 * error handling variables
136 static int errors = 0; /* number of errors reported */
137 static int aborting = 0; /* why is the make aborting? */
138 #define ABORT_ERROR 1 /* Because of an error */
139 #define ABORT_INTERRUPT 2 /* Because it was interrupted */
140 #define ABORT_WAIT 3 /* Waiting for jobs to finish */
143 * XXX: Avoid SunOS bug... FILENO() is fp->_file, and file
144 * is a char! So when we go above 127 we turn negative!
146 #define FILENO(a) ((unsigned) fileno(a))
149 * post-make command processing. The node postCommands is really just the
150 * .END target but we keep it around to avoid having to search for it
153 static GNode *postCommands; /* node containing commands to execute when
154 * everything else is done */
155 static int numCommands; /* The number of commands actually printed
156 * for a target. Should this number be
157 * 0, no shell will be executed. */
160 * Return values from JobStart.
162 #define JOB_RUNNING 0 /* Job is running */
163 #define JOB_ERROR 1 /* Error in starting the job */
164 #define JOB_FINISHED 2 /* The job is already finished */
165 #define JOB_STOPPED 3 /* The job is stopped */
168 * tfile is used to build temp file names to store shell commands to
171 static char tfile[sizeof(TMPPAT)];
175 * Descriptions for various shells.
177 static Shell shells[] = {
179 * CSH description. The csh can do echo control by playing
180 * with the setting of the 'echo' shell variable. Sadly,
181 * however, it is unable to do error control nicely.
185 TRUE, "unset verbose", "set verbose", "unset verbose", 10,
186 FALSE, "echo \"%s\"\n", "csh -c \"%s || exit 0\"",
190 * SH description. Echo control is also possible and, under
191 * sun UNIX anyway, one can even control error checking.
195 TRUE, "set -", "set -v", "set -", 5,
196 TRUE, "set -e", "set +e",
197 #ifdef OLDBOURNESHELL
198 FALSE, "echo \"%s\"\n", "sh -c '%s || exit 0'\n",
203 * KSH description. The Korn shell has a superset of
204 * the Bourne shell's functionality.
208 TRUE, "set -", "set -v", "set -", 5,
209 TRUE, "set -e", "set +e",
217 FALSE, (char *) 0, (char *) 0, (char *) 0, 0,
218 FALSE, (char *) 0, (char *) 0,
219 (char *) 0, (char *) 0,
222 static Shell *commandShell = &shells[DEFSHELL];/* this is the shell to
224 * commands in the Makefile.
226 * Job_ParseShell function */
227 static char *shellPath = NULL, /* full pathname of
228 * executable image */
229 *shellName; /* last component of shell */
232 static int maxJobs; /* The most children we can run at once */
233 static int maxLocal; /* The most local ones we can have */
234 STATIC int nJobs; /* The number of children currently running */
235 STATIC int nLocal; /* The number of local children */
236 STATIC Lst jobs; /* The structures that describe them */
237 STATIC Boolean jobFull; /* Flag to tell when the job table is full. It
238 * is set TRUE when (1) the total number of
239 * running jobs equals the maximum allowed or
240 * (2) a job can only be run locally, but
241 * nLocal equals maxLocal */
242 #ifndef RMT_WILL_WATCH
244 static int kqfd; /* File descriptor obtained by kqueue() */
246 static fd_set outputs; /* Set of descriptors of pipes connected to
247 * the output channels of children */
251 STATIC GNode *lastNode; /* The node for which output was most recently
253 STATIC char *targFmt; /* Format string to use to head output from a
254 * job when it's not the most-recent job heard
258 # define TARG_FMT "--- %s at %s ---\n" /* Default format */
259 # define MESSAGE(fp, gn) \
260 (void) fprintf(fp, targFmt, gn->name, gn->rem.hname);
262 # define TARG_FMT "--- %s ---\n" /* Default format */
263 # define MESSAGE(fp, gn) \
264 (void) fprintf(fp, targFmt, gn->name);
268 * When JobStart attempts to run a job remotely but can't, and isn't allowed
269 * to run the job locally, or when Job_CatchChildren detects a job that has
270 * been migrated home, the job is placed on the stoppedJobs queue to be run
271 * when the next job finishes.
273 STATIC Lst stoppedJobs; /* Lst of Job structures describing
274 * jobs that were stopped due to concurrency
275 * limits or migration home */
278 #if defined(USE_PGRP) && defined(SYSV)
279 # define KILL(pid, sig) killpg(-(pid), (sig))
281 # if defined(USE_PGRP)
282 # define KILL(pid, sig) killpg((pid), (sig))
284 # define KILL(pid, sig) kill((pid), (sig))
289 * Grmpf... There is no way to set bits of the wait structure
290 * anymore with the stupid W*() macros. I liked the union wait
291 * stuff much more. So, we devise our own macros... This is
292 * really ugly, use dramamine sparingly. You have been warned.
294 #define W_SETMASKED(st, val, fun) \
297 int mask = fun(sh); \
299 for (sh = 0; ((mask >> sh) & 1) == 0; sh++) \
301 *(st) = (*(st) & ~mask) | ((val) << sh); \
304 #define W_SETTERMSIG(st, val) W_SETMASKED(st, val, WTERMSIG)
305 #define W_SETEXITSTATUS(st, val) W_SETMASKED(st, val, WEXITSTATUS)
308 static int JobCondPassSig(void *, void *);
309 static void JobPassSig(int);
310 static int JobCmpPid(void *, void *);
311 static int JobPrintCommand(void *, void *);
312 static int JobSaveCommand(void *, void *);
313 static void JobClose(Job *);
315 static int JobCmpRmtID(Job *, int);
316 # ifdef RMT_WILL_WATCH
317 static void JobLocalInput(int, Job *);
320 static void JobFinish(Job *, int *);
321 static void JobExec(Job *, char **);
323 static void JobMakeArgv(Job *, char **);
324 static void JobRestart(Job *);
325 static int JobStart(GNode *, int, Job *);
326 static char *JobOutput(Job *, char *, char *, int);
327 static void JobDoOutput(Job *, Boolean);
328 static Shell *JobMatchShell(char *);
329 static void JobInterrupt(int, int);
330 static void JobRestartJobs(void);
333 *-----------------------------------------------------------------------
335 * Pass a signal to a job if the job is remote or if USE_PGRP
342 * None, except the job may bite it.
344 *-----------------------------------------------------------------------
347 JobCondPassSig(void *jobp, void *signop)
349 Job *job = (Job *) jobp;
350 int signo = *(int *) signop;
351 #ifdef RMT_WANTS_SIGNALS
352 if (job->flags & JOB_REMOTE) {
353 (void) Rmt_Signal(job, signo);
355 KILL(job->pid, signo);
359 * Assume that sending the signal to job->pid will signal any remote
362 DEBUGF(JOB, ("JobCondPassSig passing signal %d to child %d.\n", signo, job->pid));
363 KILL(job->pid, signo);
369 *-----------------------------------------------------------------------
371 * Pass a signal on to all remote jobs and to all local jobs if
372 * USE_PGRP is defined, then die ourselves.
378 * We die by the same signal.
380 *-----------------------------------------------------------------------
383 JobPassSig(int signo)
385 sigset_t nmask, omask;
386 struct sigaction act;
388 DEBUGF(JOB, ("JobPassSig(%d) called.\n", signo));
389 Lst_ForEach(jobs, JobCondPassSig, (void *) &signo);
392 * Deal with proper cleanup based on the signal received. We only run
393 * the .INTERRUPT target if the signal was in fact an interrupt. The other
394 * three termination signals are more of a "get out *now*" command.
396 if (signo == SIGINT) {
397 JobInterrupt(TRUE, signo);
398 } else if ((signo == SIGHUP) || (signo == SIGTERM) || (signo == SIGQUIT)) {
399 JobInterrupt(FALSE, signo);
403 * Leave gracefully if SIGQUIT, rather than core dumping.
405 if (signo == SIGQUIT) {
410 * Send ourselves the signal now we've given the message to everyone else.
411 * Note we block everything else possible while we're getting the signal.
412 * This ensures that all our jobs get continued when we wake up before
413 * we take any other signal.
416 sigaddset(&nmask, signo);
417 sigprocmask(SIG_SETMASK, &nmask, &omask);
418 act.sa_handler = SIG_DFL;
419 sigemptyset(&act.sa_mask);
421 sigaction(signo, &act, NULL);
423 DEBUGF(JOB, ("JobPassSig passing signal to self, mask = %x.\n", ~0 & ~(1 << (signo-1))));
424 (void) signal(signo, SIG_DFL);
426 (void) KILL(getpid(), signo);
429 Lst_ForEach(jobs, JobCondPassSig, (void *) &signo);
431 (void) sigprocmask(SIG_SETMASK, &omask, NULL);
432 sigprocmask(SIG_SETMASK, &omask, NULL);
433 act.sa_handler = JobPassSig;
434 sigaction(signo, &act, NULL);
438 *-----------------------------------------------------------------------
440 * Compare the pid of the job with the given pid and return 0 if they
441 * are equal. This function is called from Job_CatchChildren via
442 * Lst_Find to find the job descriptor of the finished job.
445 * 0 if the pid's match
449 *-----------------------------------------------------------------------
452 JobCmpPid(void *job, void *pid)
454 return *(int *) pid - ((Job *) job)->pid;
459 *-----------------------------------------------------------------------
461 * Compare the rmtID of the job with the given rmtID and return 0 if they
465 * 0 if the rmtID's match
469 *-----------------------------------------------------------------------
472 JobCmpRmtID(void *job, void *rmtID)
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(void *cmdp, void *jobp)
508 Boolean noSpecials; /* true if we shouldn't worry about
509 * inserting special commands into
510 * the input stream. */
511 Boolean shutUp = FALSE; /* true if we put a no echo command
512 * into the command file */
513 Boolean errOff = FALSE; /* true if we turned error checking
514 * off before printing the command
515 * and need to turn it back on */
516 char *cmdTemplate; /* Template to use when printing the
518 char *cmdStart; /* Start of expanded command */
519 LstNode cmdNode; /* Node for replacing the command */
520 char *cmd = (char *) cmdp;
521 Job *job = (Job *) jobp;
523 noSpecials = (noExecute && !(job->node->type & OP_MAKE));
525 if (strcmp(cmd, "...") == 0) {
526 job->node->type |= OP_SAVE_CMDS;
527 if ((job->flags & JOB_IGNDOTS) == 0) {
528 job->tailCmds = Lst_Succ(Lst_Member(job->node->commands,
535 #define DBPRINTF(fmt, arg) \
536 DEBUGF(JOB, (fmt, arg)); \
537 (void) fprintf(job->cmdFILE, fmt, arg); \
538 (void) fflush(job->cmdFILE);
543 * For debugging, we replace each command with the result of expanding
544 * the variables in the command.
546 cmdNode = Lst_Member(job->node->commands, (void *)cmd);
547 cmdStart = cmd = Var_Subst(NULL, cmd, job->node, FALSE);
548 Lst_Replace(cmdNode, (void *)cmdStart);
550 cmdTemplate = "%s\n";
553 * Check for leading @' and -'s to control echoing and error checking.
555 while (*cmd == '@' || *cmd == '-') {
557 shutUp = DEBUG(LOUD) ? FALSE : TRUE;
564 while (isspace((unsigned char) *cmd))
568 if (!(job->flags & JOB_SILENT) && !noSpecials &&
569 commandShell->hasEchoCtl) {
570 DBPRINTF("%s\n", commandShell->echoOff);
577 if ( !(job->flags & JOB_IGNERR) && !noSpecials) {
578 if (commandShell->hasErrCtl) {
580 * we don't want the error-control commands showing
581 * up either, so we turn off echoing while executing
582 * them. We could put another field in the shell
583 * structure to tell JobDoOutput to look for this
584 * string too, but why make it any more complex than
587 if (!(job->flags & JOB_SILENT) && !shutUp &&
588 commandShell->hasEchoCtl) {
589 DBPRINTF("%s\n", commandShell->echoOff);
590 DBPRINTF("%s\n", commandShell->ignErr);
591 DBPRINTF("%s\n", commandShell->echoOn);
593 DBPRINTF("%s\n", commandShell->ignErr);
595 } else if (commandShell->ignErr &&
596 (*commandShell->ignErr != '\0'))
599 * The shell has no error control, so we need to be
600 * weird to get it to ignore any errors from the command.
601 * If echoing is turned on, we turn it off and use the
602 * errCheck template to echo the command. Leave echoing
603 * off so the user doesn't see the weirdness we go through
604 * to ignore errors. Set cmdTemplate to use the weirdness
605 * instead of the simple "%s\n" template.
607 if (!(job->flags & JOB_SILENT) && !shutUp &&
608 commandShell->hasEchoCtl) {
609 DBPRINTF("%s\n", commandShell->echoOff);
610 DBPRINTF(commandShell->errCheck, cmd);
613 cmdTemplate = commandShell->ignErr;
615 * The error ignoration (hee hee) is already taken care
616 * of by the ignErr template, so pretend error checking
628 DBPRINTF(cmdTemplate, cmd);
632 * If echoing is already off, there's no point in issuing the
633 * echoOff command. Otherwise we issue it and pretend it was on
634 * for the whole command...
636 if (!shutUp && !(job->flags & JOB_SILENT) && commandShell->hasEchoCtl){
637 DBPRINTF("%s\n", commandShell->echoOff);
640 DBPRINTF("%s\n", commandShell->errCheck);
643 DBPRINTF("%s\n", commandShell->echoOn);
649 *-----------------------------------------------------------------------
651 * Save a command to be executed when everything else is done.
652 * Callback function for JobFinish...
658 * The command is tacked onto the end of postCommands's commands list.
660 *-----------------------------------------------------------------------
663 JobSaveCommand(void *cmd, void *gn)
665 cmd = (void *) Var_Subst(NULL, (char *) cmd, (GNode *) gn, FALSE);
666 (void) Lst_AtEnd(postCommands->commands, cmd);
672 *-----------------------------------------------------------------------
674 * Called to close both input and output pipes when a job is finished.
680 * The file descriptors associated with the job are closed.
682 *-----------------------------------------------------------------------
688 #ifdef RMT_WILL_WATCH
689 Rmt_Ignore(job->inPipe);
690 #elif !defined(USE_KQUEUE)
691 FD_CLR(job->inPipe, &outputs);
693 if (job->outPipe != job->inPipe) {
694 (void) close(job->outPipe);
696 JobDoOutput(job, TRUE);
697 (void) close(job->inPipe);
699 (void) close(job->outFd);
700 JobDoOutput(job, TRUE);
705 *-----------------------------------------------------------------------
707 * Do final processing for the given job including updating
708 * parents and starting new jobs as available/necessary. Note
709 * that we pay no attention to the JOB_IGNERR flag here.
710 * This is because when we're called because of a noexecute flag
711 * or something, jstat.w_status is 0 and when called from
712 * Job_CatchChildren, the status is zeroed if it s/b ignored.
718 * Some nodes may be put on the toBeMade queue.
719 * Final commands for the job are placed on postCommands.
721 * If we got an error and are aborting (aborting == ABORT_ERROR) and
722 * the job list is now empty, we are done for the day.
723 * If we recognized an error (errors !=0), we set the aborting flag
724 * to ABORT_ERROR so no more jobs will be started.
725 *-----------------------------------------------------------------------
729 JobFinish(Job *job, int *status)
733 if ((WIFEXITED(*status) &&
734 (((WEXITSTATUS(*status) != 0) && !(job->flags & JOB_IGNERR)))) ||
735 (WIFSIGNALED(*status) && (WTERMSIG(*status) != SIGCONT)))
738 * If it exited non-zero and either we're doing things our
739 * way or we're not ignoring errors, the job is finished.
740 * Similarly, if the shell died because of a signal
741 * the job is also finished. In these
742 * cases, finish out the job's output before printing the exit
746 KILL(job->pid, SIGCONT);
749 if (job->cmdFILE != NULL && job->cmdFILE != stdout) {
750 (void) fclose(job->cmdFILE);
754 if (job->flags & JOB_REMOTE)
755 Rmt_Done(job->rmtID, job->node);
757 } else if (WIFEXITED(*status)) {
759 * Deal with ignored errors in -B mode. We need to print a message
760 * telling of the ignored error as well as setting status.w_status
761 * to 0 so the next command gets run. To do this, we set done to be
762 * TRUE if in -B mode and the job exited non-zero.
764 done = WEXITSTATUS(*status) != 0;
766 * Old comment said: "Note we don't
767 * want to close down any of the streams until we know we're at the
769 * But we do. Otherwise when are we going to print the rest of the
774 if (job->flags & JOB_REMOTE)
775 Rmt_Done(job->rmtID, job->node);
779 * No need to close things down or anything.
785 WIFSTOPPED(*status) ||
786 (WIFSIGNALED(*status) && (WTERMSIG(*status) == SIGCONT)) ||
791 if (compatMake && !usePipes && (job->flags & JOB_IGNERR)) {
793 * If output is going to a file and this job is ignoring
794 * errors, arrange to have the exit status sent to the
795 * output file as well.
797 out = fdopen(job->outFd, "w");
799 Punt("Cannot fdopen");
804 if (WIFEXITED(*status)) {
805 DEBUGF(JOB, ("Process %d exited.\n", job->pid));
806 if (WEXITSTATUS(*status) != 0) {
807 if (usePipes && job->node != lastNode) {
808 MESSAGE(out, job->node);
809 lastNode = job->node;
811 (void) fprintf(out, "*** Error code %d%s\n",
812 WEXITSTATUS(*status),
813 (job->flags & JOB_IGNERR) ? "(ignored)" : "");
815 if (job->flags & JOB_IGNERR) {
818 } else if (DEBUG(JOB)) {
819 if (usePipes && job->node != lastNode) {
820 MESSAGE(out, job->node);
821 lastNode = job->node;
823 (void) fprintf(out, "*** Completed successfully\n");
825 } else if (WIFSTOPPED(*status)) {
826 DEBUGF(JOB, ("Process %d stopped.\n", job->pid));
827 if (usePipes && job->node != lastNode) {
828 MESSAGE(out, job->node);
829 lastNode = job->node;
831 if (!(job->flags & JOB_REMIGRATE)) {
832 (void) fprintf(out, "*** Stopped -- signal %d\n",
835 job->flags |= JOB_RESUME;
836 (void)Lst_AtEnd(stoppedJobs, (void *)job);
838 if (job->flags & JOB_REMIGRATE)
843 } else if (WTERMSIG(*status) == SIGCONT) {
845 * If the beastie has continued, shift the Job from the stopped
846 * list to the running one (or re-stop it if concurrency is
847 * exceeded) and go and get another child.
849 if (job->flags & (JOB_RESUME|JOB_REMIGRATE|JOB_RESTART)) {
850 if (usePipes && job->node != lastNode) {
851 MESSAGE(out, job->node);
852 lastNode = job->node;
854 (void) fprintf(out, "*** Continued\n");
856 if (!(job->flags & JOB_CONTINUING)) {
857 DEBUGF(JOB, ("Warning: process %d was not continuing.\n", job->pid));
860 * We don't really want to restart a job from scratch just
861 * because it continued, especially not without killing the
862 * continuing process! That's why this is ifdef'ed out.
868 job->flags &= ~JOB_CONTINUING;
869 Lst_AtEnd(jobs, (void *)job);
871 if (!(job->flags & JOB_REMOTE)) {
872 DEBUGF(JOB, ("Process %d is continuing locally.\n", job->pid));
875 if (nJobs == maxJobs) {
877 DEBUGF(JOB, ("Job queue is full.\n"));
882 if (usePipes && job->node != lastNode) {
883 MESSAGE(out, job->node);
884 lastNode = job->node;
886 (void) fprintf(out, "*** Signal %d\n", WTERMSIG(*status));
893 * Now handle the -B-mode stuff. If the beast still isn't finished,
894 * try and restart the job on the next command. If JobStart says it's
895 * ok, it's ok. If there's an error, this puppy is done.
897 if (compatMake && (WIFEXITED(*status) &&
898 !Lst_IsAtEnd(job->node->commands))) {
899 switch (JobStart(job->node, job->flags & JOB_IGNDOTS, job)) {
905 W_SETEXITSTATUS(status, 1);
909 * If we got back a JOB_FINISHED code, JobStart has already
910 * called Make_Update and freed the job descriptor. We set
911 * done to false here to avoid fake cycles and double frees.
912 * JobStart needs to do the update so we can proceed up the
913 * graph when given the -n flag..
926 (aborting != ABORT_ERROR) &&
927 (aborting != ABORT_INTERRUPT) &&
931 * As long as we aren't aborting and the job didn't return a non-zero
932 * status that we shouldn't ignore, we call Make_Update to update
933 * the parents. In addition, any saved commands for the node are placed
934 * on the .END target.
936 if (job->tailCmds != NULL) {
937 Lst_ForEachFrom(job->node->commands, job->tailCmds,
941 job->node->made = MADE;
942 Make_Update(job->node);
944 } else if (*status != 0) {
952 * Set aborting if any error.
954 if (errors && !keepgoing && (aborting != ABORT_INTERRUPT)) {
956 * If we found any errors in this batch of children and the -k flag
957 * wasn't given, we set the aborting flag so no more jobs get
960 aborting = ABORT_ERROR;
963 if ((aborting == ABORT_ERROR) && Job_Empty())
965 * If we are aborting and the job table is now empty, we finish.
971 *-----------------------------------------------------------------------
973 * Touch the given target. Called by JobStart when the -t flag was
974 * given. Prints messages unless told to be silent.
980 * The data modification of the file is changed. In addition, if the
981 * file did not exist, it is created.
982 *-----------------------------------------------------------------------
985 Job_Touch(GNode *gn, Boolean silent)
987 int streamID; /* ID of stream opened to do the touch */
988 struct utimbuf times; /* Times for utime() call */
990 if (gn->type & (OP_JOIN|OP_USE|OP_EXEC|OP_OPTIONAL)) {
992 * .JOIN, .USE, .ZEROTIME and .OPTIONAL targets are "virtual" targets
993 * and, as such, shouldn't really be created.
999 (void) fprintf(stdout, "touch %s\n", gn->name);
1000 (void) fflush(stdout);
1007 if (gn->type & OP_ARCHV) {
1009 } else if (gn->type & OP_LIB) {
1012 char *file = gn->path ? gn->path : gn->name;
1014 times.actime = times.modtime = now;
1015 if (utime(file, ×) < 0){
1016 streamID = open(file, O_RDWR | O_CREAT, 0666);
1018 if (streamID >= 0) {
1022 * Read and write a byte to the file to change the
1023 * modification time, then close the file.
1025 if (read(streamID, &c, 1) == 1) {
1026 (void) lseek(streamID, (off_t)0, SEEK_SET);
1027 (void) write(streamID, &c, 1);
1030 (void) close(streamID);
1032 (void) fprintf(stdout, "*** couldn't touch %s: %s",
1033 file, strerror(errno));
1034 (void) fflush(stdout);
1041 *-----------------------------------------------------------------------
1042 * Job_CheckCommands --
1043 * Make sure the given node has all the commands it needs.
1046 * TRUE if the commands list is/was ok.
1049 * The node will have commands from the .DEFAULT rule added to it
1051 *-----------------------------------------------------------------------
1054 Job_CheckCommands(GNode *gn, void (*abortProc)(const char *, ...))
1056 if (OP_NOP(gn->type) && Lst_IsEmpty(gn->commands) &&
1057 (gn->type & OP_LIB) == 0) {
1059 * No commands. Look for .DEFAULT rule from which we might infer
1062 if ((DEFAULT != NULL) && !Lst_IsEmpty(DEFAULT->commands)) {
1065 * Make only looks for a .DEFAULT if the node was never the
1066 * target of an operator, so that's what we do too. If
1067 * a .DEFAULT was given, we substitute its commands for gn's
1068 * commands and set the IMPSRC variable to be the target's name
1069 * The DEFAULT node acts like a transformation rule, in that
1070 * gn also inherits any attributes or sources attached to
1073 Make_HandleUse(DEFAULT, gn);
1074 Var_Set(IMPSRC, Var_Value(TARGET, gn, &p1), gn);
1076 } else if (Dir_MTime(gn) == 0) {
1078 * The node wasn't the target of an operator we have no .DEFAULT
1079 * rule to go on and the target doesn't already exist. There's
1080 * nothing more we can do for this branch. If the -k flag wasn't
1081 * given, we stop in our tracks, otherwise we just don't update
1082 * this node's parents so they never get examined.
1084 static const char msg[] = "make: don't know how to make";
1086 if (gn->type & OP_OPTIONAL) {
1087 (void) fprintf(stdout, "%s %s(ignored)\n", msg, gn->name);
1088 (void) fflush(stdout);
1089 } else if (keepgoing) {
1090 (void) fprintf(stdout, "%s %s(continuing)\n", msg, gn->name);
1091 (void) fflush(stdout);
1095 if (strcmp(gn->name,"love") == 0)
1096 (*abortProc)("Not war.");
1099 (*abortProc)("%s %s. Stop", msg, gn->name);
1106 #ifdef RMT_WILL_WATCH
1108 *-----------------------------------------------------------------------
1110 * Handle a pipe becoming readable. Callback function for Rmt_Watch
1116 * JobDoOutput is called.
1118 *-----------------------------------------------------------------------
1122 JobLocalInput(int stream, Job *job)
1124 JobDoOutput(job, FALSE);
1126 #endif /* RMT_WILL_WATCH */
1129 *-----------------------------------------------------------------------
1131 * Execute the shell for the given job. Called from JobStart and
1138 * A shell is executed, outputs is altered and the Job structure added
1141 *-----------------------------------------------------------------------
1144 JobExec(Job *job, char **argv)
1146 int cpid; /* ID of new child */
1151 DEBUGF(JOB, ("Running %s %sly\n", job->node->name,
1152 job->flags&JOB_REMOTE?"remote":"local"));
1153 DEBUGF(JOB, ("\tCommand: "));
1154 for (i = 0; argv[i] != NULL; i++) {
1155 DEBUGF(JOB, ("%s ", argv[i]));
1157 DEBUGF(JOB, ("\n"));
1161 * Some jobs produce no output and it's disconcerting to have
1162 * no feedback of their running (since they produce no output, the
1163 * banner with their name in it never appears). This is an attempt to
1164 * provide that feedback, even if nothing follows it.
1166 if ((lastNode != job->node) && (job->flags & JOB_FIRST) &&
1167 !(job->flags & JOB_SILENT)) {
1168 MESSAGE(stdout, job->node);
1169 lastNode = job->node;
1173 if (job->flags & JOB_REMOTE) {
1176 #endif /* RMT_NO_EXEC */
1178 if ((cpid = vfork()) == -1) {
1179 Punt("Cannot fork");
1180 } else if (cpid == 0) {
1183 * Must duplicate the input stream down to the child's input and
1184 * reset it to the beginning (again). Since the stream was marked
1185 * close-on-exec, we must clear that bit in the new input.
1187 if (dup2(FILENO(job->cmdFILE), 0) == -1)
1188 Punt("Cannot dup2: %s", strerror(errno));
1189 (void) fcntl(0, F_SETFD, 0);
1190 (void) lseek(0, (off_t)0, SEEK_SET);
1194 * Set up the child's output to be routed through the pipe
1195 * we've created for it.
1197 if (dup2(job->outPipe, 1) == -1)
1198 Punt("Cannot dup2: %s", strerror(errno));
1201 * We're capturing output in a file, so we duplicate the
1202 * descriptor to the temporary file into the standard
1205 if (dup2(job->outFd, 1) == -1)
1206 Punt("Cannot dup2: %s", strerror(errno));
1209 * The output channels are marked close on exec. This bit was
1210 * duplicated by the dup2 (on some systems), so we have to clear
1211 * it before routing the shell's error output to the same place as
1212 * its standard output.
1214 (void) fcntl(1, F_SETFD, 0);
1215 if (dup2(1, 2) == -1)
1216 Punt("Cannot dup2: %s", strerror(errno));
1220 * We want to switch the child into a different process family so
1221 * we can kill it and all its descendants in one fell swoop,
1222 * by killing its process family, but not commit suicide.
1227 (void) setpgid(0, getpid());
1229 #endif /* USE_PGRP */
1232 if (job->flags & JOB_REMOTE) {
1233 Rmt_Exec(shellPath, argv, FALSE);
1236 (void) execv(shellPath, argv);
1238 (void) write(STDERR_FILENO, "Could not execute shell\n",
1239 sizeof("Could not execute shell"));
1243 long omask = sigblock(sigmask(SIGCHLD));
1247 if (usePipes && (job->flags & JOB_FIRST) ) {
1249 * The first time a job is run for a node, we set the current
1250 * position in the buffer to the beginning and mark another
1251 * stream to watch in the outputs mask
1254 struct kevent kev[2];
1258 #ifdef RMT_WILL_WATCH
1259 Rmt_Watch(job->inPipe, JobLocalInput, job);
1260 #elif defined(USE_KQUEUE)
1261 EV_SET(&kev[0], job->inPipe, EVFILT_READ, EV_ADD, 0, 0, job);
1262 EV_SET(&kev[1], job->pid, EVFILT_PROC, EV_ADD | EV_ONESHOT,
1263 NOTE_EXIT, 0, NULL);
1264 if (kevent(kqfd, kev, 2, NULL, 0, NULL) != 0) {
1265 /* kevent() will fail if the job is already finished */
1266 if (errno != EBADF && errno != ESRCH)
1267 Punt("kevent: %s", strerror(errno));
1270 FD_SET(job->inPipe, &outputs);
1271 #endif /* RMT_WILL_WATCH */
1274 if (job->flags & JOB_REMOTE) {
1278 job->rmtID = Rmt_LastID(job->pid);
1283 * XXX: Used to not happen if REMOTE. Why?
1285 if (job->cmdFILE != NULL && job->cmdFILE != stdout) {
1286 (void) fclose(job->cmdFILE);
1287 job->cmdFILE = NULL;
1291 (void) sigsetmask(omask);
1299 * Now the job is actually running, add it to the table.
1302 (void) Lst_AtEnd(jobs, (void *)job);
1303 if (nJobs == maxJobs) {
1309 *-----------------------------------------------------------------------
1311 * Create the argv needed to execute the shell for a given job.
1318 *-----------------------------------------------------------------------
1321 JobMakeArgv(Job *job, char **argv)
1324 static char args[10]; /* For merged arguments */
1326 argv[0] = shellName;
1329 if ((commandShell->exit && (*commandShell->exit != '-')) ||
1330 (commandShell->echo && (*commandShell->echo != '-')))
1333 * At least one of the flags doesn't have a minus before it, so
1334 * merge them together. Have to do this because the *(&(@*#*&#$#
1335 * Bourne shell thinks its second argument is a file to source.
1336 * Grrrr. Note the ten-character limitation on the combined arguments.
1338 (void)sprintf(args, "-%s%s",
1339 ((job->flags & JOB_IGNERR) ? "" :
1340 (commandShell->exit ? commandShell->exit : "")),
1341 ((job->flags & JOB_SILENT) ? "" :
1342 (commandShell->echo ? commandShell->echo : "")));
1349 if (!(job->flags & JOB_IGNERR) && commandShell->exit) {
1350 argv[argc] = commandShell->exit;
1353 if (!(job->flags & JOB_SILENT) && commandShell->echo) {
1354 argv[argc] = commandShell->echo;
1362 *-----------------------------------------------------------------------
1364 * Restart a job that stopped for some reason.
1370 * jobFull will be set if the job couldn't be run.
1372 *-----------------------------------------------------------------------
1375 JobRestart(Job *job)
1381 if (job->flags & JOB_REMIGRATE) {
1384 verboseRemigrates ||
1387 (void) fprintf(stdout, "*** remigrating %x(%s)\n",
1388 job->pid, job->node->name);
1389 (void) fflush(stdout);
1393 if (!Rmt_ReExport(job->pid, job->node, &host)) {
1394 if (verboseRemigrates || DEBUG(JOB)) {
1395 (void) fprintf(stdout, "*** couldn't migrate...\n");
1396 (void) fflush(stdout);
1399 if (nLocal != maxLocal) {
1401 * Job cannot be remigrated, but there's room on the local
1402 * machine, so resume the job and note that another
1403 * local job has started.
1407 verboseRemigrates ||
1410 (void) fprintf(stdout, "*** resuming on local machine\n");
1411 (void) fflush(stdout);
1413 KILL(job->pid, SIGCONT);
1416 job->flags &= ~(JOB_REMIGRATE|JOB_RESUME|JOB_REMOTE);
1417 job->flags |= JOB_CONTINUING;
1419 job->flags &= ~(JOB_REMIGRATE|JOB_RESUME);
1423 * Job cannot be restarted. Mark the table as full and
1424 * place the job back on the list of stopped jobs.
1428 verboseRemigrates ||
1431 (void) fprintf(stdout, "*** holding\n");
1432 (void) fflush(stdout);
1434 (void)Lst_AtFront(stoppedJobs, (void *)job);
1436 DEBUGF(JOB, ("Job queue is full.\n"));
1442 * Clear out the remigrate and resume flags. Set the continuing
1443 * flag so we know later on that the process isn't exiting just
1444 * because of a signal.
1446 job->flags &= ~(JOB_REMIGRATE|JOB_RESUME);
1447 job->flags |= JOB_CONTINUING;
1452 (void)Lst_AtEnd(jobs, (void *)job);
1454 if (nJobs == maxJobs) {
1456 DEBUGF(JOB, ("Job queue is full.\n"));
1458 } else if (job->flags & JOB_RESTART) {
1460 * Set up the control arguments to the shell. This is based on the
1461 * flags set earlier for this job. If the JOB_IGNERR flag is clear,
1462 * the 'exit' flag of the commandShell is used to cause it to exit
1463 * upon receiving an error. If the JOB_SILENT flag is clear, the
1464 * 'echo' flag of the commandShell is used to get it to start echoing
1465 * as soon as it starts processing commands.
1469 JobMakeArgv(job, argv);
1471 DEBUGF(JOB, ("Restarting %s...", job->node->name));
1473 if ((job->node->type&OP_NOEXPORT) ||
1474 (nLocal < maxLocal && runLocalFirst)
1476 || !Rmt_Export(shellPath, argv, job)
1478 || !Rmt_Begin(shellPath, argv, job->node)
1482 if (((nLocal >= maxLocal) && !(job->flags & JOB_SPECIAL))) {
1484 * Can't be exported and not allowed to run locally -- put it
1485 * back on the hold queue and mark the table full
1487 DEBUGF(JOB, ("holding\n"));
1488 (void)Lst_AtFront(stoppedJobs, (void *)job);
1490 DEBUGF(JOB, ("Job queue is full.\n"));
1494 * Job may be run locally.
1496 DEBUGF(JOB, ("running locally\n"));
1497 job->flags &= ~JOB_REMOTE;
1503 * Can be exported. Hooray!
1505 DEBUGF(JOB, ("exporting\n"));
1506 job->flags |= JOB_REMOTE;
1512 * The job has stopped and needs to be restarted. Why it stopped,
1515 DEBUGF(JOB, ("Resuming %s...", job->node->name));
1516 if (((job->flags & JOB_REMOTE) ||
1517 (nLocal < maxLocal) ||
1519 (((job->flags & JOB_SPECIAL) &&
1520 (job->node->type & OP_NOEXPORT)) &&
1521 (maxLocal == 0))) &&
1523 ((job->flags & JOB_SPECIAL) &&
1524 (maxLocal == 0))) &&
1529 * If the job is remote, it's ok to resume it as long as the
1530 * maximum concurrency won't be exceeded. If it's local and
1531 * we haven't reached the local concurrency limit already (or the
1532 * job must be run locally and maxLocal is 0), it's also ok to
1538 #ifdef RMT_WANTS_SIGNALS
1539 if (job->flags & JOB_REMOTE) {
1540 error = !Rmt_Signal(job, SIGCONT);
1542 #endif /* RMT_WANTS_SIGNALS */
1543 error = (KILL(job->pid, SIGCONT) != 0);
1547 * Make sure the user knows we've continued the beast and
1548 * actually put the thing in the job table.
1550 job->flags |= JOB_CONTINUING;
1551 W_SETTERMSIG(&status, SIGCONT);
1552 JobFinish(job, &status);
1554 job->flags &= ~(JOB_RESUME|JOB_CONTINUING);
1555 DEBUGF(JOB, ("done\n"));
1557 Error("couldn't resume %s: %s",
1558 job->node->name, strerror(errno));
1560 W_SETEXITSTATUS(&status, 1);
1561 JobFinish(job, &status);
1565 * Job cannot be restarted. Mark the table as full and
1566 * place the job back on the list of stopped jobs.
1568 DEBUGF(JOB, ("table full\n"));
1569 (void) Lst_AtFront(stoppedJobs, (void *)job);
1571 DEBUGF(JOB, ("Job queue is full.\n"));
1577 *-----------------------------------------------------------------------
1579 * Start a target-creation process going for the target described
1580 * by the graph node gn.
1583 * JOB_ERROR if there was an error in the commands, JOB_FINISHED
1584 * if there isn't actually anything left to do for the job and
1585 * JOB_RUNNING if the job has been started.
1588 * A new Job node is created and added to the list of running
1589 * jobs. PMake is forked and a child shell created.
1590 *-----------------------------------------------------------------------
1593 JobStart(GNode *gn, int flags, Job *previous)
1595 Job *job; /* new job descriptor */
1596 char *argv[4]; /* Argument vector to shell */
1597 Boolean cmdsOK; /* true if the nodes commands were all right */
1598 Boolean local; /* Set true if the job was run locally */
1599 Boolean noExec; /* Set true if we decide not to run the job */
1600 int tfd; /* File descriptor for temp file */
1602 if (previous != NULL) {
1603 previous->flags &= ~(JOB_FIRST|JOB_IGNERR|JOB_SILENT|JOB_REMOTE);
1606 job = (Job *) emalloc(sizeof(Job));
1611 job->tailCmds = NULL;
1614 * Set the initial value of the flags for this job based on the global
1615 * ones and the node's attributes... Any flags supplied by the caller
1616 * are also added to the field.
1619 if (Targ_Ignore(gn)) {
1620 job->flags |= JOB_IGNERR;
1622 if (Targ_Silent(gn)) {
1623 job->flags |= JOB_SILENT;
1625 job->flags |= flags;
1628 * Check the commands now so any attributes from .DEFAULT have a chance
1629 * to migrate to the node
1631 if (!compatMake && job->flags & JOB_FIRST) {
1632 cmdsOK = Job_CheckCommands(gn, Error);
1638 * If the -n flag wasn't given, we open up OUR (not the child's)
1639 * temporary file to stuff commands in it. The thing is rd/wr so we don't
1640 * need to reopen it to feed it to the shell. If the -n flag *was* given,
1641 * we just set the file to be stdout. Cute, huh?
1643 if ((gn->type & OP_MAKE) || (!noExecute && !touchFlag)) {
1645 * We're serious here, but if the commands were bogus, we're
1652 (void) strcpy(tfile, TMPPAT);
1653 if ((tfd = mkstemp(tfile)) == -1)
1654 Punt("Cannot create temp file: %s", strerror(errno));
1655 job->cmdFILE = fdopen(tfd, "w+");
1657 if (job->cmdFILE == NULL) {
1659 Punt("Could not open %s", tfile);
1661 (void) fcntl(FILENO(job->cmdFILE), F_SETFD, 1);
1663 * Send the commands to the command file, flush all its buffers then
1664 * rewind and remove the thing.
1669 * used to be backwards; replace when start doing multiple commands
1674 * Be compatible: If this is the first time for this node,
1675 * verify its commands are ok and open the commands list for
1676 * sequential access by later invocations of JobStart.
1677 * Once that is done, we take the next command off the list
1678 * and print it to the command file. If the command was an
1679 * ellipsis, note that there's nothing more to execute.
1681 if ((job->flags&JOB_FIRST) && (Lst_Open(gn->commands) != SUCCESS)){
1684 LstNode ln = Lst_Next(gn->commands);
1687 JobPrintCommand((void *) Lst_Datum(ln),
1691 Lst_Close(gn->commands);
1693 if (noExec && !(job->flags & JOB_FIRST)) {
1695 * If we're not going to execute anything, the job
1696 * is done and we need to close down the various
1697 * file descriptors we've opened for output, then
1698 * call JobDoOutput to catch the final characters or
1699 * send the file to the screen... Note that the i/o streams
1700 * are only open if this isn't the first job.
1701 * Note also that this could not be done in
1702 * Job_CatchChildren b/c it wasn't clear if there were
1703 * more commands to execute or not...
1710 * We can do all the commands at once. hooray for sanity
1713 Lst_ForEach(gn->commands, JobPrintCommand, (void *)job);
1716 * If we didn't print out any commands to the shell script,
1717 * there's not much point in executing the shell, is there?
1719 if (numCommands == 0) {
1723 } else if (noExecute) {
1725 * Not executing anything -- just print all the commands to stdout
1726 * in one fell swoop. This will still set up job->tailCmds correctly.
1728 if (lastNode != gn) {
1729 MESSAGE(stdout, gn);
1732 job->cmdFILE = stdout;
1734 * Only print the commands if they're ok, but don't die if they're
1735 * not -- just let the user know they're bad and keep going. It
1736 * doesn't do any harm in this case and may do some good.
1739 Lst_ForEach(gn->commands, JobPrintCommand, (void *)job);
1742 * Don't execute the shell, thank you.
1747 * Just touch the target and note that no shell should be executed.
1748 * Set cmdFILE to stdout to make life easier. Check the commands, too,
1749 * but don't die if they're no good -- it does no harm to keep working
1752 job->cmdFILE = stdout;
1753 Job_Touch(gn, job->flags&JOB_SILENT);
1758 * If we're not supposed to execute a shell, don't.
1762 * Unlink and close the command file if we opened one
1764 if (job->cmdFILE != stdout) {
1765 if (job->cmdFILE != NULL)
1766 (void) fclose(job->cmdFILE);
1768 (void) fflush(stdout);
1772 * We only want to work our way up the graph if we aren't here because
1773 * the commands for the job were no good.
1776 if (aborting == 0) {
1777 if (job->tailCmds != NULL) {
1778 Lst_ForEachFrom(job->node->commands, job->tailCmds,
1782 job->node->made = MADE;
1783 Make_Update(job->node);
1786 return(JOB_FINISHED);
1792 (void) fflush(job->cmdFILE);
1796 * Set up the control arguments to the shell. This is based on the flags
1797 * set earlier for this job.
1799 JobMakeArgv(job, argv);
1802 * If we're using pipes to catch output, create the pipe by which we'll
1803 * get the shell's output. If we're using files, print out that we're
1804 * starting a job and then set up its temporary-file name.
1806 if (!compatMake || (job->flags & JOB_FIRST)) {
1810 Punt("Cannot create pipe: %s", strerror(errno));
1811 job->inPipe = fd[0];
1812 job->outPipe = fd[1];
1813 (void) fcntl(job->inPipe, F_SETFD, 1);
1814 (void) fcntl(job->outPipe, F_SETFD, 1);
1816 (void) fprintf(stdout, "Remaking `%s'\n", gn->name);
1817 (void) fflush(stdout);
1818 (void) strcpy(job->outFile, TMPPAT);
1819 if ((job->outFd = mkstemp(job->outFile)) == -1)
1820 Punt("cannot create temp file: %s", strerror(errno));
1821 (void) fcntl(job->outFd, F_SETFD, 1);
1826 if (!(gn->type & OP_NOEXPORT) && !(runLocalFirst && nLocal < maxLocal)) {
1828 local = !Rmt_Export(shellPath, argv, job);
1830 local = !Rmt_Begin(shellPath, argv, job->node);
1831 #endif /* RMT_NO_EXEC */
1833 job->flags |= JOB_REMOTE;
1839 if (local && (((nLocal >= maxLocal) &&
1840 !(job->flags & JOB_SPECIAL) &&
1842 (!(gn->type & OP_NOEXPORT) || (maxLocal != 0))
1849 * The job can only be run locally, but we've hit the limit of
1850 * local concurrency, so put the job on hold until some other job
1851 * finishes. Note that the special jobs (.BEGIN, .INTERRUPT and .END)
1852 * may be run locally even when the local limit has been reached
1853 * (e.g. when maxLocal == 0), though they will be exported if at
1854 * all possible. In addition, any target marked with .NOEXPORT will
1855 * be run locally if maxLocal is 0.
1859 DEBUGF(JOB, ("Can only run job locally.\n"));
1860 job->flags |= JOB_RESTART;
1861 (void) Lst_AtEnd(stoppedJobs, (void *)job);
1863 if ((nLocal >= maxLocal) && local) {
1865 * If we're running this job locally as a special case (see above),
1866 * at least say the table is full.
1869 DEBUGF(JOB, ("Local job queue is full.\n"));
1873 return(JOB_RUNNING);
1877 JobOutput(Job *job, char *cp, char *endp, int msg)
1881 if (commandShell->noPrint) {
1882 ecp = strstr(cp, commandShell->noPrint);
1883 while (ecp != NULL) {
1886 if (msg && job->node != lastNode) {
1887 MESSAGE(stdout, job->node);
1888 lastNode = job->node;
1891 * The only way there wouldn't be a newline after
1892 * this line is if it were the last in the buffer.
1893 * however, since the non-printable comes after it,
1894 * there must be a newline, so we don't print one.
1896 (void) fprintf(stdout, "%s", cp);
1897 (void) fflush(stdout);
1899 cp = ecp + commandShell->noPLen;
1902 * Still more to print, look again after skipping
1903 * the whitespace following the non-printable
1907 while (*cp == ' ' || *cp == '\t' || *cp == '\n') {
1910 ecp = strstr(cp, commandShell->noPrint);
1920 *-----------------------------------------------------------------------
1922 * This function is called at different times depending on
1923 * whether the user has specified that output is to be collected
1924 * via pipes or temporary files. In the former case, we are called
1925 * whenever there is something to read on the pipe. We collect more
1926 * output from the given job and store it in the job's outBuf. If
1927 * this makes up a line, we print it tagged by the job's identifier,
1929 * If output has been collected in a temporary file, we open the
1930 * file and read it line by line, transfering it to our own
1931 * output channel until the file is empty. At which point we
1932 * remove the temporary file.
1933 * In both cases, however, we keep our figurative eye out for the
1934 * 'noPrint' line for the shell from which the output came. If
1935 * we recognize a line, we don't print it. If the command is not
1936 * alone on the line (the character after it is not \0 or \n), we
1937 * do print whatever follows it.
1943 * curPos may be shifted as may the contents of outBuf.
1944 *-----------------------------------------------------------------------
1947 JobDoOutput(Job *job, Boolean finish)
1949 Boolean gotNL = FALSE; /* true if got a newline */
1950 Boolean fbuf; /* true if our buffer filled up */
1951 int nr; /* number of bytes read */
1952 int i; /* auxiliary index into outBuf */
1953 int max; /* limit for i (end of current data) */
1954 int nRead; /* (Temporary) number of bytes read */
1956 FILE *oFILE; /* Stream pointer to shell's output file */
1962 * Read as many bytes as will fit in the buffer.
1968 nRead = read(job->inPipe, &job->outBuf[job->curPos],
1969 JOB_BUFSIZE - job->curPos);
1971 DEBUGF(JOB, ("JobDoOutput(piperead)"));
1978 * If we hit the end-of-file (the job is dead), we must flush its
1979 * remaining output, so pretend we read a newline if there's any
1980 * output remaining in the buffer.
1981 * Also clear the 'finish' flag so we stop looping.
1983 if ((nr == 0) && (job->curPos != 0)) {
1984 job->outBuf[job->curPos] = '\n';
1987 } else if (nr == 0) {
1992 * Look for the last newline in the bytes we just got. If there is
1993 * one, break out of the loop with 'i' as its index and gotNL set
1996 max = job->curPos + nr;
1997 for (i = job->curPos + nr - 1; i >= job->curPos; i--) {
1998 if (job->outBuf[i] == '\n') {
2001 } else if (job->outBuf[i] == '\0') {
2005 job->outBuf[i] = ' ';
2011 if (job->curPos == JOB_BUFSIZE) {
2013 * If we've run out of buffer space, we have no choice
2014 * but to print the stuff. sigh.
2020 if (gotNL || fbuf) {
2022 * Need to send the output to the screen. Null terminate it
2023 * first, overwriting the newline character if there was one.
2024 * So long as the line isn't one we should filter (according
2025 * to the shell description), we print the line, preceded
2026 * by a target banner if this target isn't the same as the
2027 * one for which we last printed something.
2028 * The rest of the data in the buffer are then shifted down
2029 * to the start of the buffer and curPos is set accordingly.
2031 job->outBuf[i] = '\0';
2032 if (i >= job->curPos) {
2035 cp = JobOutput(job, job->outBuf, &job->outBuf[i], FALSE);
2038 * There's still more in that thar buffer. This time, though,
2039 * we know there's no newline at the end, so we add one of
2040 * our own free will.
2043 if (job->node != lastNode) {
2044 MESSAGE(stdout, job->node);
2045 lastNode = job->node;
2047 (void) fprintf(stdout, "%s%s", cp, gotNL ? "\n" : "");
2048 (void) fflush(stdout);
2052 /* shift the remaining characters down */
2053 (void) memcpy(job->outBuf, &job->outBuf[i + 1], max - (i + 1));
2054 job->curPos = max - (i + 1);
2058 * We have written everything out, so we just start over
2059 * from the start of the buffer. No copying. No nothing.
2066 * If the finish flag is true, we must loop until we hit
2067 * end-of-file on the pipe. This is guaranteed to happen
2068 * eventually since the other end of the pipe is now closed
2069 * (we closed it explicitly and the child has exited). When
2070 * we do get an EOF, finish will be set FALSE and we'll fall
2077 * We've been called to retrieve the output of the job from the
2078 * temporary file where it's been squirreled away. This consists of
2079 * opening the file, reading the output line by line, being sure not
2080 * to print the noPrint line for the shell we used, then close and
2081 * remove the temporary file. Very simple.
2083 * Change to read in blocks and do FindSubString type things as for
2084 * pipes? That would allow for "@echo -n..."
2086 oFILE = fopen(job->outFile, "r");
2087 if (oFILE != NULL) {
2088 (void) fprintf(stdout, "Results of making %s:\n", job->node->name);
2089 (void) fflush(stdout);
2090 while (fgets(inLine, sizeof(inLine), oFILE) != NULL) {
2091 char *cp, *endp, *oendp;
2094 oendp = endp = inLine + strlen(inLine);
2095 if (endp[-1] == '\n') {
2098 cp = JobOutput(job, inLine, endp, FALSE);
2101 * There's still more in that thar buffer. This time, though,
2102 * we know there's no newline at the end, so we add one of
2103 * our own free will.
2105 (void) fprintf(stdout, "%s", cp);
2106 (void) fflush(stdout);
2107 if (endp != oendp) {
2108 (void) fprintf(stdout, "\n");
2109 (void) fflush(stdout);
2112 (void) fclose(oFILE);
2113 (void) eunlink(job->outFile);
2119 *-----------------------------------------------------------------------
2120 * Job_CatchChildren --
2121 * Handle the exit of a child. Called from Make_Make.
2127 * The job descriptor is removed from the list of children.
2130 * We do waits, blocking or not, according to the wisdom of our
2131 * caller, until there are no more children to report. For each
2132 * job, call JobFinish to finish things off. This will take care of
2133 * putting jobs on the stoppedJobs queue.
2135 *-----------------------------------------------------------------------
2138 Job_CatchChildren(Boolean block)
2140 int pid; /* pid of dead child */
2141 Job *job; /* job descriptor for dead child */
2142 LstNode jnode; /* list element for finding job */
2143 int status; /* Exit/termination status */
2146 * Don't even bother if we know there's no one around.
2152 while ((pid = waitpid((pid_t) -1, &status,
2153 (block?0:WNOHANG)|WUNTRACED)) > 0)
2155 DEBUGF(JOB, ("Process %d exited or stopped.\n", pid));
2157 jnode = Lst_Find(jobs, (void *)&pid, JobCmpPid);
2159 if (jnode == NULL) {
2160 if (WIFSIGNALED(status) && (WTERMSIG(status) == SIGCONT)) {
2161 jnode = Lst_Find(stoppedJobs, (void *) &pid, JobCmpPid);
2162 if (jnode == NULL) {
2163 Error("Resumed child (%d) not in table", pid);
2166 job = (Job *)Lst_Datum(jnode);
2167 (void) Lst_Remove(stoppedJobs, jnode);
2169 Error("Child (%d) not in table?", pid);
2173 job = (Job *) Lst_Datum(jnode);
2174 (void) Lst_Remove(jobs, jnode);
2176 DEBUGF(JOB, ("Job queue is no longer full.\n"));
2179 if (!(job->flags & JOB_REMOTE)) {
2180 DEBUGF(JOB, ("Job queue has one fewer local process.\n"));
2188 JobFinish(job, &status);
2193 *-----------------------------------------------------------------------
2194 * Job_CatchOutput --
2195 * Catch the output from our children, if we're using
2196 * pipes do so. Otherwise just block time until we get a
2197 * signal (most likely a SIGCHLD) since there's no point in
2198 * just spinning when there's nothing to do and the reaping
2199 * of a child can wait for a while.
2205 * Output is read from pipes if we're piping.
2206 * -----------------------------------------------------------------------
2209 Job_CatchOutput(void)
2214 struct kevent kev[KEV_SIZE];
2217 struct timeval timeout;
2222 #ifdef RMT_WILL_WATCH
2223 int pnJobs; /* Previous nJobs */
2226 (void) fflush(stdout);
2227 #ifdef RMT_WILL_WATCH
2231 * It is possible for us to be called with nJobs equal to 0. This happens
2232 * if all the jobs finish and a job that is stopped cannot be run
2233 * locally (eg if maxLocal is 0) and cannot be exported. The job will
2234 * be placed back on the stoppedJobs queue, Job_Empty() will return false,
2235 * Make_Run will call us again when there's nothing for which to wait.
2236 * nJobs never changes, so we loop forever. Hence the check. It could
2237 * be argued that we should sleep for a bit so as not to swamp the
2238 * exportation system with requests. Perhaps we should.
2240 * NOTE: IT IS THE RESPONSIBILITY OF Rmt_Wait TO CALL Job_CatchChildren
2241 * IN A TIMELY FASHION TO CATCH ANY LOCALLY RUNNING JOBS THAT EXIT.
2242 * It may use the variable nLocal to determine if it needs to call
2243 * Job_CatchChildren (if nLocal is 0, there's nothing for which to
2246 while (nJobs != 0 && pnJobs == nJobs) {
2252 if ((nfds = kevent(kqfd, NULL, 0, kev, KEV_SIZE, NULL)) == -1) {
2253 Punt("kevent: %s", strerror(errno));
2255 for (i = 0; i < nfds; i++) {
2256 if (kev[i].flags & EV_ERROR) {
2257 warnc(kev[i].data, "kevent");
2260 switch (kev[i].filter) {
2262 JobDoOutput(kev[i].udata, FALSE);
2265 /* Just wake up and let Job_CatchChildren() collect the
2266 * terminated job. */
2273 timeout.tv_sec = SEL_SEC;
2274 timeout.tv_usec = SEL_USEC;
2276 if ((nfds = select(FD_SETSIZE, &readfds, (fd_set *) 0,
2277 (fd_set *) 0, &timeout)) <= 0)
2280 if (Lst_Open(jobs) == FAILURE) {
2281 Punt("Cannot open job table");
2283 while (nfds && (ln = Lst_Next(jobs)) != NULL) {
2284 job = (Job *) Lst_Datum(ln);
2285 if (FD_ISSET(job->inPipe, &readfds)) {
2286 JobDoOutput(job, FALSE);
2292 #endif /* !USE_KQUEUE */
2294 #endif /* RMT_WILL_WATCH */
2298 *-----------------------------------------------------------------------
2300 * Start the creation of a target. Basically a front-end for
2301 * JobStart used by the Make module.
2307 * Another job is started.
2309 *-----------------------------------------------------------------------
2314 (void) JobStart(gn, 0, NULL);
2318 *-----------------------------------------------------------------------
2320 * Initialize the process module, given a maximum number of jobs, and
2321 * a maximum number of local jobs.
2327 * lists and counters are initialized
2328 *-----------------------------------------------------------------------
2331 Job_Init(int maxproc, int maxlocal)
2333 GNode *begin; /* node for commands to do at the very start */
2335 jobs = Lst_Init(FALSE);
2336 stoppedJobs = Lst_Init(FALSE);
2338 maxLocal = maxlocal;
2348 if (maxJobs == 1 || beVerbose == 0
2354 * If only one job can run at a time, there's no need for a banner,
2362 if (shellPath == NULL) {
2364 * The user didn't specify a shell to use, so we are using the
2365 * default one... Both the absolute path and the last component
2366 * must be set. The last component is taken from the 'name' field
2367 * of the default shell description pointed-to by commandShell.
2368 * All default shells are located in _PATH_DEFSHELLDIR.
2370 shellName = commandShell->name;
2371 shellPath = str_concat(_PATH_DEFSHELLDIR, shellName, STR_ADDSLASH);
2374 if (commandShell->exit == NULL) {
2375 commandShell->exit = "";
2377 if (commandShell->echo == NULL) {
2378 commandShell->echo = "";
2382 * Catch the four signals that POSIX specifies if they aren't ignored.
2383 * JobPassSig will take care of calling JobInterrupt if appropriate.
2385 if (signal(SIGINT, SIG_IGN) != SIG_IGN) {
2386 (void) signal(SIGINT, JobPassSig);
2388 if (signal(SIGHUP, SIG_IGN) != SIG_IGN) {
2389 (void) signal(SIGHUP, JobPassSig);
2391 if (signal(SIGQUIT, SIG_IGN) != SIG_IGN) {
2392 (void) signal(SIGQUIT, JobPassSig);
2394 if (signal(SIGTERM, SIG_IGN) != SIG_IGN) {
2395 (void) signal(SIGTERM, JobPassSig);
2398 * There are additional signals that need to be caught and passed if
2399 * either the export system wants to be told directly of signals or if
2400 * we're giving each job its own process group (since then it won't get
2401 * signals from the terminal driver as we own the terminal)
2403 #if defined(RMT_WANTS_SIGNALS) || defined(USE_PGRP)
2404 if (signal(SIGTSTP, SIG_IGN) != SIG_IGN) {
2405 (void) signal(SIGTSTP, JobPassSig);
2407 if (signal(SIGTTOU, SIG_IGN) != SIG_IGN) {
2408 (void) signal(SIGTTOU, JobPassSig);
2410 if (signal(SIGTTIN, SIG_IGN) != SIG_IGN) {
2411 (void) signal(SIGTTIN, JobPassSig);
2413 if (signal(SIGWINCH, SIG_IGN) != SIG_IGN) {
2414 (void) signal(SIGWINCH, JobPassSig);
2419 if ((kqfd = kqueue()) == -1) {
2420 Punt("kqueue: %s", strerror(errno));
2424 begin = Targ_FindNode(".BEGIN", TARG_NOCREATE);
2426 if (begin != NULL) {
2427 JobStart(begin, JOB_SPECIAL, (Job *)0);
2430 #ifndef RMT_WILL_WATCH
2431 Job_CatchChildren(!usePipes);
2432 #endif /* RMT_WILL_WATCH */
2435 postCommands = Targ_FindNode(".END", TARG_CREATE);
2439 *-----------------------------------------------------------------------
2441 * See if the job table is full. It is considered full if it is OR
2442 * if we are in the process of aborting OR if we have
2443 * reached/exceeded our local quota. This prevents any more jobs
2447 * TRUE if the job table is full, FALSE otherwise
2450 *-----------------------------------------------------------------------
2455 return(aborting || jobFull);
2459 *-----------------------------------------------------------------------
2461 * See if the job table is empty. Because the local concurrency may
2462 * be set to 0, it is possible for the job table to become empty,
2463 * while the list of stoppedJobs remains non-empty. In such a case,
2464 * we want to restart as many jobs as we can.
2467 * TRUE if it is. FALSE if it ain't.
2472 * -----------------------------------------------------------------------
2478 if (!Lst_IsEmpty(stoppedJobs) && !aborting) {
2480 * The job table is obviously not full if it has no jobs in
2481 * it...Try and restart the stopped jobs.
2495 *-----------------------------------------------------------------------
2497 * Find a matching shell in 'shells' given its final component.
2500 * A pointer to the Shell structure.
2505 *-----------------------------------------------------------------------
2508 JobMatchShell(char *name)
2510 Shell *sh; /* Pointer into shells table */
2511 Shell *match; /* Longest-matching shell */
2516 eoname = name + strlen(name);
2520 for (sh = shells; sh->name != NULL; sh++) {
2521 for (cp1 = eoname - strlen(sh->name), cp2 = sh->name;
2522 *cp1 != '\0' && *cp1 == *cp2;
2528 } else if (match == NULL || strlen(match->name) < strlen(sh->name)) {
2532 return(match == NULL ? sh : match);
2536 *-----------------------------------------------------------------------
2538 * Parse a shell specification and set up commandShell, shellPath
2539 * and shellName appropriately.
2542 * FAILURE if the specification was incorrect.
2545 * commandShell points to a Shell structure (either predefined or
2546 * created from the shell spec), shellPath is the full path of the
2547 * shell described by commandShell, while shellName is just the
2548 * final component of shellPath.
2551 * A shell specification consists of a .SHELL target, with dependency
2552 * operator, followed by a series of blank-separated words. Double
2553 * quotes can be used to use blanks in words. A backslash escapes
2554 * anything (most notably a double-quote and a space) and
2555 * provides the functionality it does in C. Each word consists of
2556 * keyword and value separated by an equal sign. There should be no
2557 * unnecessary spaces in the word. The keywords are as follows:
2558 * name Name of shell.
2559 * path Location of shell. Overrides "name" if given
2560 * quiet Command to turn off echoing.
2561 * echo Command to turn echoing on
2562 * filter Result of turning off echoing that shouldn't be
2564 * echoFlag Flag to turn echoing on at the start
2565 * errFlag Flag to turn error checking on at the start
2566 * hasErrCtl True if shell has error checking control
2567 * check Command to turn on error checking if hasErrCtl
2568 * is TRUE or template of command to echo a command
2569 * for which error checking is off if hasErrCtl is
2571 * ignore Command to turn off error checking if hasErrCtl
2572 * is TRUE or template of command to execute a
2573 * command so as to ignore any errors it returns if
2574 * hasErrCtl is FALSE.
2576 *-----------------------------------------------------------------------
2579 Job_ParseShell(char *line)
2587 Boolean fullSpec = FALSE;
2589 while (isspace((unsigned char) *line)) {
2592 words = brk_string(line, &wordCount, TRUE);
2594 memset(&newShell, 0, sizeof(newShell));
2597 * Parse the specification by keyword
2599 for (path = NULL, argc = wordCount - 1, argv = words + 1;
2602 if (strncmp(*argv, "path=", 5) == 0) {
2604 } else if (strncmp(*argv, "name=", 5) == 0) {
2605 newShell.name = &argv[0][5];
2607 if (strncmp(*argv, "quiet=", 6) == 0) {
2608 newShell.echoOff = &argv[0][6];
2609 } else if (strncmp(*argv, "echo=", 5) == 0) {
2610 newShell.echoOn = &argv[0][5];
2611 } else if (strncmp(*argv, "filter=", 7) == 0) {
2612 newShell.noPrint = &argv[0][7];
2613 newShell.noPLen = strlen(newShell.noPrint);
2614 } else if (strncmp(*argv, "echoFlag=", 9) == 0) {
2615 newShell.echo = &argv[0][9];
2616 } else if (strncmp(*argv, "errFlag=", 8) == 0) {
2617 newShell.exit = &argv[0][8];
2618 } else if (strncmp(*argv, "hasErrCtl=", 10) == 0) {
2619 char c = argv[0][10];
2620 newShell.hasErrCtl = !((c != 'Y') && (c != 'y') &&
2621 (c != 'T') && (c != 't'));
2622 } else if (strncmp(*argv, "check=", 6) == 0) {
2623 newShell.errCheck = &argv[0][6];
2624 } else if (strncmp(*argv, "ignore=", 7) == 0) {
2625 newShell.ignErr = &argv[0][7];
2627 Parse_Error(PARSE_FATAL, "Unknown keyword \"%s\"",
2637 * If no path was given, the user wants one of the pre-defined shells,
2638 * yes? So we find the one s/he wants with the help of JobMatchShell
2639 * and set things up the right way. shellPath will be set up by
2642 if (newShell.name == NULL) {
2643 Parse_Error(PARSE_FATAL, "Neither path nor name specified");
2646 commandShell = JobMatchShell(newShell.name);
2647 shellName = newShell.name;
2651 * The user provided a path. If s/he gave nothing else (fullSpec is
2652 * FALSE), try and find a matching shell in the ones we know of.
2653 * Else we just take the specification at its word and copy it
2654 * to a new location. In either case, we need to record the
2655 * path the user gave for the shell.
2658 path = strrchr(path, '/');
2664 if (newShell.name != NULL) {
2665 shellName = newShell.name;
2670 commandShell = JobMatchShell(shellName);
2672 commandShell = (Shell *) emalloc(sizeof(Shell));
2673 *commandShell = newShell;
2677 if (commandShell->echoOn && commandShell->echoOff) {
2678 commandShell->hasEchoCtl = TRUE;
2681 if (!commandShell->hasErrCtl) {
2682 if (commandShell->errCheck == NULL) {
2683 commandShell->errCheck = "";
2685 if (commandShell->ignErr == NULL) {
2686 commandShell->ignErr = "%s\n";
2694 *-----------------------------------------------------------------------
2696 * Handle the receipt of an interrupt.
2702 * All children are killed. Another job will be started if the
2703 * .INTERRUPT target was given.
2704 *-----------------------------------------------------------------------
2707 JobInterrupt(int runINTERRUPT, int signo)
2709 LstNode ln; /* element in job table */
2710 Job *job = NULL; /* job descriptor in that element */
2711 GNode *interrupt; /* the node describing the .INTERRUPT target */
2713 aborting = ABORT_INTERRUPT;
2715 (void) Lst_Open(jobs);
2716 while ((ln = Lst_Next(jobs)) != NULL) {
2717 job = (Job *) Lst_Datum(ln);
2719 if (!Targ_Precious(job->node)) {
2720 char *file = (job->node->path == NULL ?
2723 if (!noExecute && eunlink(file) != -1) {
2724 Error("*** %s removed", file);
2727 #ifdef RMT_WANTS_SIGNALS
2728 if (job->flags & JOB_REMOTE) {
2730 * If job is remote, let the Rmt module do the killing.
2732 if (!Rmt_Signal(job, signo)) {
2734 * If couldn't kill the thing, finish it out now with an
2735 * error code, since no exit report will come in likely.
2739 status.w_status = 0;
2740 status.w_retcode = 1;
2741 JobFinish(job, &status);
2743 } else if (job->pid) {
2744 KILL(job->pid, signo);
2748 DEBUGF(JOB, ("JobInterrupt passing signal to child %d.\n",
2750 KILL(job->pid, signo);
2752 #endif /* RMT_WANTS_SIGNALS */
2756 (void)Lst_Open(stoppedJobs);
2757 while ((ln = Lst_Next(stoppedJobs)) != NULL) {
2758 job = (Job *) Lst_Datum(ln);
2760 if (job->flags & JOB_RESTART) {
2761 DEBUGF(JOB, "JobInterrupt skipping job on stopped queue"
2762 "-- it was waiting to be restarted.\n");
2765 if (!Targ_Precious(job->node)) {
2766 char *file = (job->node->path == NULL ?
2769 if (eunlink(file) == 0) {
2770 Error("*** %s removed", file);
2774 * Resume the thing so it will take the signal.
2776 DEBUGF(JOB, ("JobInterrupt passing CONT to stopped child %d.\n", job->pid));
2777 KILL(job->pid, SIGCONT);
2778 #ifdef RMT_WANTS_SIGNALS
2779 if (job->flags & JOB_REMOTE) {
2781 * If job is remote, let the Rmt module do the killing.
2783 if (!Rmt_Signal(job, SIGINT)) {
2785 * If couldn't kill the thing, finish it out now with an
2786 * error code, since no exit report will come in likely.
2789 status.w_status = 0;
2790 status.w_retcode = 1;
2791 JobFinish(job, &status);
2793 } else if (job->pid) {
2794 DEBUGF(JOB, "JobInterrupt passing interrupt to stopped child %d.\n",
2796 KILL(job->pid, SIGINT);
2798 #endif /* RMT_WANTS_SIGNALS */
2801 Lst_Close(stoppedJobs);
2803 if (runINTERRUPT && !touchFlag) {
2804 interrupt = Targ_FindNode(".INTERRUPT", TARG_NOCREATE);
2805 if (interrupt != NULL) {
2806 ignoreErrors = FALSE;
2808 JobStart(interrupt, JOB_IGNDOTS, (Job *)0);
2811 #ifndef RMT_WILL_WATCH
2812 Job_CatchChildren(!usePipes);
2813 #endif /* RMT_WILL_WATCH */
2820 *-----------------------------------------------------------------------
2822 * Do final processing such as the running of the commands
2823 * attached to the .END target.
2826 * Number of errors reported.
2827 *-----------------------------------------------------------------------
2832 if (postCommands != NULL && !Lst_IsEmpty(postCommands->commands)) {
2834 Error("Errors reported so .END ignored");
2836 JobStart(postCommands, JOB_SPECIAL | JOB_IGNDOTS, NULL);
2840 #ifndef RMT_WILL_WATCH
2841 Job_CatchChildren(!usePipes);
2842 #endif /* RMT_WILL_WATCH */
2850 *-----------------------------------------------------------------------
2852 * Waits for all running jobs to finish and returns. Sets 'aborting'
2853 * to ABORT_WAIT to prevent other jobs from starting.
2859 * Currently running jobs finish.
2861 *-----------------------------------------------------------------------
2866 aborting = ABORT_WAIT;
2867 while (nJobs != 0) {
2869 #ifndef RMT_WILL_WATCH
2870 Job_CatchChildren(!usePipes);
2871 #endif /* RMT_WILL_WATCH */
2877 *-----------------------------------------------------------------------
2879 * Abort all currently running jobs without handling output or anything.
2880 * This function is to be called only in the event of a major
2881 * error. Most definitely NOT to be called from JobInterrupt.
2887 * All children are killed, not just the firstborn
2888 *-----------------------------------------------------------------------
2893 LstNode ln; /* element in job table */
2894 Job *job; /* the job descriptor in that element */
2897 aborting = ABORT_ERROR;
2901 (void) Lst_Open(jobs);
2902 while ((ln = Lst_Next(jobs)) != NULL) {
2903 job = (Job *) Lst_Datum(ln);
2906 * kill the child process with increasingly drastic signals to make
2907 * darn sure it's dead.
2909 #ifdef RMT_WANTS_SIGNALS
2910 if (job->flags & JOB_REMOTE) {
2911 Rmt_Signal(job, SIGINT);
2912 Rmt_Signal(job, SIGKILL);
2914 KILL(job->pid, SIGINT);
2915 KILL(job->pid, SIGKILL);
2918 KILL(job->pid, SIGINT);
2919 KILL(job->pid, SIGKILL);
2920 #endif /* RMT_WANTS_SIGNALS */
2925 * Catch as many children as want to report in at first, then give up
2927 while (waitpid((pid_t) -1, &foo, WNOHANG) > 0)
2933 *-----------------------------------------------------------------------
2934 * JobFlagForMigration --
2935 * Handle the eviction of a child. Called from RmtStatusChange.
2936 * Flags the child as remigratable and then suspends it. Takes
2937 * the ID of the host we used, for matching children.
2943 * The job descriptor is flagged for remigration.
2945 *-----------------------------------------------------------------------
2948 JobFlagForMigration(int hostID)
2950 Job *job; /* job descriptor for dead child */
2951 LstNode jnode; /* list element for finding job */
2953 DEBUGF(JOB, ("JobFlagForMigration(%d) called.\n", hostID));
2954 jnode = Lst_Find(jobs, (void *)hostID, JobCmpRmtID);
2956 if (jnode == NULL) {
2957 jnode = Lst_Find(stoppedJobs, (void *)hostID, JobCmpRmtID);
2958 if (jnode == NULL) {
2960 Error("Evicting host(%d) not in table", hostID);
2965 job = (Job *) Lst_Datum(jnode);
2967 DEBUGF(JOB, ("JobFlagForMigration(%d) found job '%s'.\n", hostID, job->node->name));
2969 KILL(job->pid, SIGSTOP);
2971 job->flags |= JOB_REMIGRATE;
2977 *-----------------------------------------------------------------------
2979 * Tries to restart stopped jobs if there are slots available.
2980 * Note that this tries to restart them regardless of pending errors.
2981 * It's not good to leave stopped jobs lying around!
2987 * Resumes(and possibly migrates) jobs.
2989 *-----------------------------------------------------------------------
2992 JobRestartJobs(void)
2994 while (!jobFull && !Lst_IsEmpty(stoppedJobs)) {
2995 DEBUGF(JOB, ("Job queue is not full. Restarting a stopped job.\n"));
2996 JobRestart((Job *)Lst_DeQueue(stoppedJobs));