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
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32 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
33 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
34 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
35 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
36 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
39 * @(#)job.c 8.2 (Berkeley) 3/19/94
40 * $FreeBSD: src/usr.bin/make/job.c,v 1.17.2.2 2001/02/13 03:13:57 will Exp $
41 * $DragonFly: src/usr.bin/make/job.c,v 1.20 2004/11/30 19:12:57 joerg Exp $
50 * handle the creation etc. of our child processes.
53 * Job_Make Start the creation of the given target.
55 * Job_CatchChildren Check for and handle the termination of any
56 * children. This must be called reasonably
57 * frequently to keep the whole make going at
58 * a decent clip, since job table entries aren't
59 * removed until their process is caught this way.
60 * Its single argument is TRUE if the function
61 * should block waiting for a child to terminate.
63 * Job_CatchOutput Print any output our children have produced.
64 * Should also be called fairly frequently to
65 * keep the user informed of what's going on.
66 * If no output is waiting, it will block for
67 * a time given by the SEL_* constants, below,
68 * or until output is ready.
70 * Job_Init Called to intialize this module. in addition,
71 * any commands attached to the .BEGIN target
72 * are executed before this function returns.
73 * Hence, the makefile must have been parsed
74 * before this function is called.
76 * Job_Full Return TRUE if the job table is filled.
78 * Job_Empty Return TRUE if the job table is completely
81 * Job_ParseShell Given the line following a .SHELL target, parse
82 * the line as a shell specification. Returns
83 * FAILURE if the spec was incorrect.
85 * Job_Finish Perform any final processing which needs doing.
86 * This includes the execution of any commands
87 * which have been/were attached to the .END
88 * target. It should only be called when the
91 * Job_AbortAll Abort all currently running jobs. It doesn't
92 * handle output or do anything for the jobs,
93 * just kills them. It should only be called in
94 * an emergency, as it were.
96 * Job_CheckCommands Verify that the commands for a target are
97 * ok. Provide them if necessary and possible.
99 * Job_Touch Update a target without really updating it.
101 * Job_Wait Wait for all currently-running jobs to finish.
104 #include <sys/types.h>
105 #include <sys/stat.h>
106 #include <sys/file.h>
107 #include <sys/time.h>
109 #include <sys/event.h>
111 #include <sys/wait.h>
124 #include "pathnames.h"
129 # define STATIC static
133 * error handling variables
135 static int errors = 0; /* number of errors reported */
136 static int aborting = 0; /* why is the make aborting? */
137 #define ABORT_ERROR 1 /* Because of an error */
138 #define ABORT_INTERRUPT 2 /* Because it was interrupted */
139 #define ABORT_WAIT 3 /* Waiting for jobs to finish */
142 * XXX: Avoid SunOS bug... FILENO() is fp->_file, and file
143 * is a char! So when we go above 127 we turn negative!
145 #define FILENO(a) ((unsigned) fileno(a))
148 * post-make command processing. The node postCommands is really just the
149 * .END target but we keep it around to avoid having to search for it
152 static GNode *postCommands; /* node containing commands to execute when
153 * everything else is done */
154 static int numCommands; /* The number of commands actually printed
155 * for a target. Should this number be
156 * 0, no shell will be executed. */
159 * Return values from JobStart.
161 #define JOB_RUNNING 0 /* Job is running */
162 #define JOB_ERROR 1 /* Error in starting the job */
163 #define JOB_FINISHED 2 /* The job is already finished */
164 #define JOB_STOPPED 3 /* The job is stopped */
167 * tfile is used to build temp file names to store shell commands to
170 static char tfile[sizeof(TMPPAT)];
174 * Descriptions for various shells.
176 static Shell shells[] = {
178 * CSH description. The csh can do echo control by playing
179 * with the setting of the 'echo' shell variable. Sadly,
180 * however, it is unable to do error control nicely.
184 TRUE, "unset verbose", "set verbose", "unset verbose", 10,
185 FALSE, "echo \"%s\"\n", "csh -c \"%s || exit 0\"",
189 * SH description. Echo control is also possible and, under
190 * sun UNIX anyway, one can even control error checking.
194 TRUE, "set -", "set -v", "set -", 5,
195 TRUE, "set -e", "set +e",
196 #ifdef OLDBOURNESHELL
197 FALSE, "echo \"%s\"\n", "sh -c '%s || exit 0'\n",
206 FALSE, (char *) 0, (char *) 0, (char *) 0, 0,
207 FALSE, (char *) 0, (char *) 0,
208 (char *) 0, (char *) 0,
211 static Shell *commandShell = &shells[DEFSHELL];/* this is the shell to
213 * commands in the Makefile.
215 * Job_ParseShell function */
216 static char *shellPath = NULL, /* full pathname of
217 * executable image */
218 *shellName; /* last component of shell */
221 static int maxJobs; /* The most children we can run at once */
222 static int maxLocal; /* The most local ones we can have */
223 STATIC int nJobs; /* The number of children currently running */
224 STATIC int nLocal; /* The number of local children */
225 STATIC Lst jobs; /* The structures that describe them */
226 STATIC Boolean jobFull; /* Flag to tell when the job table is full. It
227 * is set TRUE when (1) the total number of
228 * running jobs equals the maximum allowed or
229 * (2) a job can only be run locally, but
230 * nLocal equals maxLocal */
231 #ifndef RMT_WILL_WATCH
233 static int kqfd; /* File descriptor obtained by kqueue() */
235 static fd_set outputs; /* Set of descriptors of pipes connected to
236 * the output channels of children */
240 STATIC GNode *lastNode; /* The node for which output was most recently
242 STATIC char *targFmt; /* Format string to use to head output from a
243 * job when it's not the most-recent job heard
247 # define TARG_FMT "--- %s at %s ---\n" /* Default format */
248 # define MESSAGE(fp, gn) \
249 (void) fprintf(fp, targFmt, gn->name, gn->rem.hname);
251 # define TARG_FMT "--- %s ---\n" /* Default format */
252 # define MESSAGE(fp, gn) \
253 (void) fprintf(fp, targFmt, gn->name);
257 * When JobStart attempts to run a job remotely but can't, and isn't allowed
258 * to run the job locally, or when Job_CatchChildren detects a job that has
259 * been migrated home, the job is placed on the stoppedJobs queue to be run
260 * when the next job finishes.
262 STATIC Lst stoppedJobs; /* Lst of Job structures describing
263 * jobs that were stopped due to concurrency
264 * limits or migration home */
267 #if defined(USE_PGRP) && defined(SYSV)
268 # define KILL(pid, sig) killpg(-(pid), (sig))
270 # if defined(USE_PGRP)
271 # define KILL(pid, sig) killpg((pid), (sig))
273 # define KILL(pid, sig) kill((pid), (sig))
278 * Grmpf... There is no way to set bits of the wait structure
279 * anymore with the stupid W*() macros. I liked the union wait
280 * stuff much more. So, we devise our own macros... This is
281 * really ugly, use dramamine sparingly. You have been warned.
283 #define W_SETMASKED(st, val, fun) \
286 int mask = fun(sh); \
288 for (sh = 0; ((mask >> sh) & 1) == 0; sh++) \
290 *(st) = (*(st) & ~mask) | ((val) << sh); \
293 #define W_SETTERMSIG(st, val) W_SETMASKED(st, val, WTERMSIG)
294 #define W_SETEXITSTATUS(st, val) W_SETMASKED(st, val, WEXITSTATUS)
297 static int JobCondPassSig(void *, void *);
298 static void JobPassSig(int);
299 static int JobCmpPid(void *, void *);
300 static int JobPrintCommand(void *, void *);
301 static int JobSaveCommand(void *, void *);
302 static void JobClose(Job *);
304 static int JobCmpRmtID(Job *, int);
305 # ifdef RMT_WILL_WATCH
306 static void JobLocalInput(int, Job *);
309 static void JobFinish(Job *, int *);
310 static void JobExec(Job *, char **);
312 static void JobMakeArgv(Job *, char **);
313 static void JobRestart(Job *);
314 static int JobStart(GNode *, int, Job *);
315 static char *JobOutput(Job *, char *, char *, int);
316 static void JobDoOutput(Job *, Boolean);
317 static Shell *JobMatchShell(char *);
318 static void JobInterrupt(int, int);
319 static void JobRestartJobs(void);
322 *-----------------------------------------------------------------------
324 * Pass a signal to a job if the job is remote or if USE_PGRP
331 * None, except the job may bite it.
333 *-----------------------------------------------------------------------
336 JobCondPassSig(void *jobp, void *signop)
338 Job *job = (Job *) jobp;
339 int signo = *(int *) signop;
340 #ifdef RMT_WANTS_SIGNALS
341 if (job->flags & JOB_REMOTE) {
342 (void) Rmt_Signal(job, signo);
344 KILL(job->pid, signo);
348 * Assume that sending the signal to job->pid will signal any remote
351 DEBUGF(JOB, ("JobCondPassSig passing signal %d to child %d.\n", signo, job->pid));
352 KILL(job->pid, signo);
358 *-----------------------------------------------------------------------
360 * Pass a signal on to all remote jobs and to all local jobs if
361 * USE_PGRP is defined, then die ourselves.
367 * We die by the same signal.
369 *-----------------------------------------------------------------------
372 JobPassSig(int signo)
374 sigset_t nmask, omask;
375 struct sigaction act;
377 DEBUGF(JOB, ("JobPassSig(%d) called.\n", signo));
378 Lst_ForEach(jobs, JobCondPassSig, (void *) &signo);
381 * Deal with proper cleanup based on the signal received. We only run
382 * the .INTERRUPT target if the signal was in fact an interrupt. The other
383 * three termination signals are more of a "get out *now*" command.
385 if (signo == SIGINT) {
386 JobInterrupt(TRUE, signo);
387 } else if ((signo == SIGHUP) || (signo == SIGTERM) || (signo == SIGQUIT)) {
388 JobInterrupt(FALSE, signo);
392 * Leave gracefully if SIGQUIT, rather than core dumping.
394 if (signo == SIGQUIT) {
399 * Send ourselves the signal now we've given the message to everyone else.
400 * Note we block everything else possible while we're getting the signal.
401 * This ensures that all our jobs get continued when we wake up before
402 * we take any other signal.
405 sigaddset(&nmask, signo);
406 sigprocmask(SIG_SETMASK, &nmask, &omask);
407 act.sa_handler = SIG_DFL;
408 sigemptyset(&act.sa_mask);
410 sigaction(signo, &act, NULL);
412 DEBUGF(JOB, ("JobPassSig passing signal to self, mask = %x.\n", ~0 & ~(1 << (signo-1))));
413 (void) signal(signo, SIG_DFL);
415 (void) KILL(getpid(), signo);
418 Lst_ForEach(jobs, JobCondPassSig, (void *) &signo);
420 (void) sigprocmask(SIG_SETMASK, &omask, NULL);
421 sigprocmask(SIG_SETMASK, &omask, NULL);
422 act.sa_handler = JobPassSig;
423 sigaction(signo, &act, NULL);
427 *-----------------------------------------------------------------------
429 * Compare the pid of the job with the given pid and return 0 if they
430 * are equal. This function is called from Job_CatchChildren via
431 * Lst_Find to find the job descriptor of the finished job.
434 * 0 if the pid's match
438 *-----------------------------------------------------------------------
441 JobCmpPid(void *job, void *pid)
443 return *(int *) pid - ((Job *) job)->pid;
448 *-----------------------------------------------------------------------
450 * Compare the rmtID of the job with the given rmtID and return 0 if they
454 * 0 if the rmtID's match
458 *-----------------------------------------------------------------------
461 JobCmpRmtID(void *job, void *rmtID)
463 return(*(int *) rmtID - *(int *) job->rmtID);
468 *-----------------------------------------------------------------------
470 * Put out another command for the given job. If the command starts
471 * with an @ or a - we process it specially. In the former case,
472 * so long as the -s and -n flags weren't given to make, we stick
473 * a shell-specific echoOff command in the script. In the latter,
474 * we ignore errors for the entire job, unless the shell has error
476 * If the command is just "..." we take all future commands for this
477 * job to be commands to be executed once the entire graph has been
478 * made and return non-zero to signal that the end of the commands
479 * was reached. These commands are later attached to the postCommands
480 * node and executed by Job_Finish when all things are done.
481 * This function is called from JobStart via Lst_ForEach.
484 * Always 0, unless the command was "..."
487 * If the command begins with a '-' and the shell has no error control,
488 * the JOB_IGNERR flag is set in the job descriptor.
489 * If the command is "..." and we're not ignoring such things,
490 * tailCmds is set to the successor node of the cmd.
491 * numCommands is incremented if the command is actually printed.
492 *-----------------------------------------------------------------------
495 JobPrintCommand(void *cmdp, void *jobp)
497 Boolean noSpecials; /* true if we shouldn't worry about
498 * inserting special commands into
499 * the input stream. */
500 Boolean shutUp = FALSE; /* true if we put a no echo command
501 * into the command file */
502 Boolean errOff = FALSE; /* true if we turned error checking
503 * off before printing the command
504 * and need to turn it back on */
505 char *cmdTemplate; /* Template to use when printing the
507 char *cmdStart; /* Start of expanded command */
508 LstNode cmdNode; /* Node for replacing the command */
509 char *cmd = (char *) cmdp;
510 Job *job = (Job *) jobp;
512 noSpecials = (noExecute && !(job->node->type & OP_MAKE));
514 if (strcmp(cmd, "...") == 0) {
515 job->node->type |= OP_SAVE_CMDS;
516 if ((job->flags & JOB_IGNDOTS) == 0) {
517 job->tailCmds = Lst_Succ(Lst_Member(job->node->commands,
524 #define DBPRINTF(fmt, arg) \
525 DEBUGF(JOB, (fmt, arg)); \
526 (void) fprintf(job->cmdFILE, fmt, arg); \
527 (void) fflush(job->cmdFILE);
532 * For debugging, we replace each command with the result of expanding
533 * the variables in the command.
535 cmdNode = Lst_Member(job->node->commands, (void *)cmd);
536 cmdStart = cmd = Var_Subst(NULL, cmd, job->node, FALSE);
537 Lst_Replace(cmdNode, (void *)cmdStart);
539 cmdTemplate = "%s\n";
542 * Check for leading @', -' or +'s to control echoing, error checking,
543 * and execution on -n.
545 while (*cmd == '@' || *cmd == '-' || *cmd == '+') {
549 shutUp = DEBUG(LOUD) ? FALSE : TRUE;
559 * We're not actually exececuting anything...
560 * but this one needs to be - use compat mode just for it.
562 Compat_RunCommand(cmdp, job->node);
570 while (isspace((unsigned char) *cmd))
574 if (!(job->flags & JOB_SILENT) && !noSpecials &&
575 commandShell->hasEchoCtl) {
576 DBPRINTF("%s\n", commandShell->echoOff);
583 if ( !(job->flags & JOB_IGNERR) && !noSpecials) {
584 if (commandShell->hasErrCtl) {
586 * we don't want the error-control commands showing
587 * up either, so we turn off echoing while executing
588 * them. We could put another field in the shell
589 * structure to tell JobDoOutput to look for this
590 * string too, but why make it any more complex than
593 if (!(job->flags & JOB_SILENT) && !shutUp &&
594 commandShell->hasEchoCtl) {
595 DBPRINTF("%s\n", commandShell->echoOff);
596 DBPRINTF("%s\n", commandShell->ignErr);
597 DBPRINTF("%s\n", commandShell->echoOn);
599 DBPRINTF("%s\n", commandShell->ignErr);
601 } else if (commandShell->ignErr &&
602 (*commandShell->ignErr != '\0'))
605 * The shell has no error control, so we need to be
606 * weird to get it to ignore any errors from the command.
607 * If echoing is turned on, we turn it off and use the
608 * errCheck template to echo the command. Leave echoing
609 * off so the user doesn't see the weirdness we go through
610 * to ignore errors. Set cmdTemplate to use the weirdness
611 * instead of the simple "%s\n" template.
613 if (!(job->flags & JOB_SILENT) && !shutUp &&
614 commandShell->hasEchoCtl) {
615 DBPRINTF("%s\n", commandShell->echoOff);
616 DBPRINTF(commandShell->errCheck, cmd);
619 cmdTemplate = commandShell->ignErr;
621 * The error ignoration (hee hee) is already taken care
622 * of by the ignErr template, so pretend error checking
634 DBPRINTF(cmdTemplate, cmd);
638 * If echoing is already off, there's no point in issuing the
639 * echoOff command. Otherwise we issue it and pretend it was on
640 * for the whole command...
642 if (!shutUp && !(job->flags & JOB_SILENT) && commandShell->hasEchoCtl){
643 DBPRINTF("%s\n", commandShell->echoOff);
646 DBPRINTF("%s\n", commandShell->errCheck);
649 DBPRINTF("%s\n", commandShell->echoOn);
655 *-----------------------------------------------------------------------
657 * Save a command to be executed when everything else is done.
658 * Callback function for JobFinish...
664 * The command is tacked onto the end of postCommands's commands list.
666 *-----------------------------------------------------------------------
669 JobSaveCommand(void *cmd, void *gn)
671 cmd = (void *) Var_Subst(NULL, (char *) cmd, (GNode *) gn, FALSE);
672 (void) Lst_AtEnd(postCommands->commands, cmd);
678 *-----------------------------------------------------------------------
680 * Called to close both input and output pipes when a job is finished.
686 * The file descriptors associated with the job are closed.
688 *-----------------------------------------------------------------------
694 #ifdef RMT_WILL_WATCH
695 Rmt_Ignore(job->inPipe);
696 #elif !defined(USE_KQUEUE)
697 FD_CLR(job->inPipe, &outputs);
699 if (job->outPipe != job->inPipe) {
700 (void) close(job->outPipe);
702 JobDoOutput(job, TRUE);
703 (void) close(job->inPipe);
705 (void) close(job->outFd);
706 JobDoOutput(job, TRUE);
711 *-----------------------------------------------------------------------
713 * Do final processing for the given job including updating
714 * parents and starting new jobs as available/necessary. Note
715 * that we pay no attention to the JOB_IGNERR flag here.
716 * This is because when we're called because of a noexecute flag
717 * or something, jstat.w_status is 0 and when called from
718 * Job_CatchChildren, the status is zeroed if it s/b ignored.
724 * Some nodes may be put on the toBeMade queue.
725 * Final commands for the job are placed on postCommands.
727 * If we got an error and are aborting (aborting == ABORT_ERROR) and
728 * the job list is now empty, we are done for the day.
729 * If we recognized an error (errors !=0), we set the aborting flag
730 * to ABORT_ERROR so no more jobs will be started.
731 *-----------------------------------------------------------------------
735 JobFinish(Job *job, int *status)
739 if ((WIFEXITED(*status) &&
740 (((WEXITSTATUS(*status) != 0) && !(job->flags & JOB_IGNERR)))) ||
741 (WIFSIGNALED(*status) && (WTERMSIG(*status) != SIGCONT)))
744 * If it exited non-zero and either we're doing things our
745 * way or we're not ignoring errors, the job is finished.
746 * Similarly, if the shell died because of a signal
747 * the job is also finished. In these
748 * cases, finish out the job's output before printing the exit
752 KILL(job->pid, SIGCONT);
755 if (job->cmdFILE != NULL && job->cmdFILE != stdout) {
756 (void) fclose(job->cmdFILE);
760 if (job->flags & JOB_REMOTE)
761 Rmt_Done(job->rmtID, job->node);
763 } else if (WIFEXITED(*status)) {
765 * Deal with ignored errors in -B mode. We need to print a message
766 * telling of the ignored error as well as setting status.w_status
767 * to 0 so the next command gets run. To do this, we set done to be
768 * TRUE if in -B mode and the job exited non-zero.
770 done = WEXITSTATUS(*status) != 0;
772 * Old comment said: "Note we don't
773 * want to close down any of the streams until we know we're at the
775 * But we do. Otherwise when are we going to print the rest of the
780 if (job->flags & JOB_REMOTE)
781 Rmt_Done(job->rmtID, job->node);
785 * No need to close things down or anything.
791 WIFSTOPPED(*status) ||
792 (WIFSIGNALED(*status) && (WTERMSIG(*status) == SIGCONT)) ||
797 if (compatMake && !usePipes && (job->flags & JOB_IGNERR)) {
799 * If output is going to a file and this job is ignoring
800 * errors, arrange to have the exit status sent to the
801 * output file as well.
803 out = fdopen(job->outFd, "w");
805 Punt("Cannot fdopen");
810 if (WIFEXITED(*status)) {
811 DEBUGF(JOB, ("Process %d exited.\n", job->pid));
812 if (WEXITSTATUS(*status) != 0) {
813 if (usePipes && job->node != lastNode) {
814 MESSAGE(out, job->node);
815 lastNode = job->node;
817 (void) fprintf(out, "*** Error code %d%s\n",
818 WEXITSTATUS(*status),
819 (job->flags & JOB_IGNERR) ? "(ignored)" : "");
821 if (job->flags & JOB_IGNERR) {
824 } else if (DEBUG(JOB)) {
825 if (usePipes && job->node != lastNode) {
826 MESSAGE(out, job->node);
827 lastNode = job->node;
829 (void) fprintf(out, "*** Completed successfully\n");
831 } else if (WIFSTOPPED(*status)) {
832 DEBUGF(JOB, ("Process %d stopped.\n", job->pid));
833 if (usePipes && job->node != lastNode) {
834 MESSAGE(out, job->node);
835 lastNode = job->node;
837 if (!(job->flags & JOB_REMIGRATE)) {
838 (void) fprintf(out, "*** Stopped -- signal %d\n",
841 job->flags |= JOB_RESUME;
842 (void)Lst_AtEnd(stoppedJobs, (void *)job);
844 if (job->flags & JOB_REMIGRATE)
849 } else if (WTERMSIG(*status) == SIGCONT) {
851 * If the beastie has continued, shift the Job from the stopped
852 * list to the running one (or re-stop it if concurrency is
853 * exceeded) and go and get another child.
855 if (job->flags & (JOB_RESUME|JOB_REMIGRATE|JOB_RESTART)) {
856 if (usePipes && job->node != lastNode) {
857 MESSAGE(out, job->node);
858 lastNode = job->node;
860 (void) fprintf(out, "*** Continued\n");
862 if (!(job->flags & JOB_CONTINUING)) {
863 DEBUGF(JOB, ("Warning: process %d was not continuing.\n", job->pid));
866 * We don't really want to restart a job from scratch just
867 * because it continued, especially not without killing the
868 * continuing process! That's why this is ifdef'ed out.
874 job->flags &= ~JOB_CONTINUING;
875 Lst_AtEnd(jobs, (void *)job);
877 if (!(job->flags & JOB_REMOTE)) {
878 DEBUGF(JOB, ("Process %d is continuing locally.\n", job->pid));
881 if (nJobs == maxJobs) {
883 DEBUGF(JOB, ("Job queue is full.\n"));
888 if (usePipes && job->node != lastNode) {
889 MESSAGE(out, job->node);
890 lastNode = job->node;
892 (void) fprintf(out, "*** Signal %d\n", WTERMSIG(*status));
899 * Now handle the -B-mode stuff. If the beast still isn't finished,
900 * try and restart the job on the next command. If JobStart says it's
901 * ok, it's ok. If there's an error, this puppy is done.
903 if (compatMake && (WIFEXITED(*status) &&
904 !Lst_IsAtEnd(job->node->commands))) {
905 switch (JobStart(job->node, job->flags & JOB_IGNDOTS, job)) {
911 W_SETEXITSTATUS(status, 1);
915 * If we got back a JOB_FINISHED code, JobStart has already
916 * called Make_Update and freed the job descriptor. We set
917 * done to false here to avoid fake cycles and double frees.
918 * JobStart needs to do the update so we can proceed up the
919 * graph when given the -n flag..
932 (aborting != ABORT_ERROR) &&
933 (aborting != ABORT_INTERRUPT) &&
937 * As long as we aren't aborting and the job didn't return a non-zero
938 * status that we shouldn't ignore, we call Make_Update to update
939 * the parents. In addition, any saved commands for the node are placed
940 * on the .END target.
942 if (job->tailCmds != NULL) {
943 Lst_ForEachFrom(job->node->commands, job->tailCmds,
947 job->node->made = MADE;
948 Make_Update(job->node);
950 } else if (*status != 0) {
958 * Set aborting if any error.
960 if (errors && !keepgoing && (aborting != ABORT_INTERRUPT)) {
962 * If we found any errors in this batch of children and the -k flag
963 * wasn't given, we set the aborting flag so no more jobs get
966 aborting = ABORT_ERROR;
969 if ((aborting == ABORT_ERROR) && Job_Empty())
971 * If we are aborting and the job table is now empty, we finish.
977 *-----------------------------------------------------------------------
979 * Touch the given target. Called by JobStart when the -t flag was
980 * given. Prints messages unless told to be silent.
986 * The data modification of the file is changed. In addition, if the
987 * file did not exist, it is created.
988 *-----------------------------------------------------------------------
991 Job_Touch(GNode *gn, Boolean silent)
993 int streamID; /* ID of stream opened to do the touch */
994 struct utimbuf times; /* Times for utime() call */
996 if (gn->type & (OP_JOIN|OP_USE|OP_EXEC|OP_OPTIONAL)) {
998 * .JOIN, .USE, .ZEROTIME and .OPTIONAL targets are "virtual" targets
999 * and, as such, shouldn't really be created.
1005 (void) fprintf(stdout, "touch %s\n", gn->name);
1006 (void) fflush(stdout);
1013 if (gn->type & OP_ARCHV) {
1015 } else if (gn->type & OP_LIB) {
1018 char *file = gn->path ? gn->path : gn->name;
1020 times.actime = times.modtime = now;
1021 if (utime(file, ×) < 0){
1022 streamID = open(file, O_RDWR | O_CREAT, 0666);
1024 if (streamID >= 0) {
1028 * Read and write a byte to the file to change the
1029 * modification time, then close the file.
1031 if (read(streamID, &c, 1) == 1) {
1032 (void) lseek(streamID, (off_t)0, SEEK_SET);
1033 (void) write(streamID, &c, 1);
1036 (void) close(streamID);
1038 (void) fprintf(stdout, "*** couldn't touch %s: %s",
1039 file, strerror(errno));
1040 (void) fflush(stdout);
1047 *-----------------------------------------------------------------------
1048 * Job_CheckCommands --
1049 * Make sure the given node has all the commands it needs.
1052 * TRUE if the commands list is/was ok.
1055 * The node will have commands from the .DEFAULT rule added to it
1057 *-----------------------------------------------------------------------
1060 Job_CheckCommands(GNode *gn, void (*abortProc)(const char *, ...))
1062 if (OP_NOP(gn->type) && Lst_IsEmpty(gn->commands) &&
1063 (gn->type & OP_LIB) == 0) {
1065 * No commands. Look for .DEFAULT rule from which we might infer
1068 if ((DEFAULT != NULL) && !Lst_IsEmpty(DEFAULT->commands)) {
1071 * Make only looks for a .DEFAULT if the node was never the
1072 * target of an operator, so that's what we do too. If
1073 * a .DEFAULT was given, we substitute its commands for gn's
1074 * commands and set the IMPSRC variable to be the target's name
1075 * The DEFAULT node acts like a transformation rule, in that
1076 * gn also inherits any attributes or sources attached to
1079 Make_HandleUse(DEFAULT, gn);
1080 Var_Set(IMPSRC, Var_Value(TARGET, gn, &p1), gn);
1082 } else if (Dir_MTime(gn) == 0) {
1084 * The node wasn't the target of an operator we have no .DEFAULT
1085 * rule to go on and the target doesn't already exist. There's
1086 * nothing more we can do for this branch. If the -k flag wasn't
1087 * given, we stop in our tracks, otherwise we just don't update
1088 * this node's parents so they never get examined.
1090 static const char msg[] = "make: don't know how to make";
1092 if (gn->type & OP_OPTIONAL) {
1093 (void) fprintf(stdout, "%s %s(ignored)\n", msg, gn->name);
1094 (void) fflush(stdout);
1095 } else if (keepgoing) {
1096 (void) fprintf(stdout, "%s %s(continuing)\n", msg, gn->name);
1097 (void) fflush(stdout);
1101 if (strcmp(gn->name,"love") == 0)
1102 (*abortProc)("Not war.");
1105 (*abortProc)("%s %s. Stop", msg, gn->name);
1112 #ifdef RMT_WILL_WATCH
1114 *-----------------------------------------------------------------------
1116 * Handle a pipe becoming readable. Callback function for Rmt_Watch
1122 * JobDoOutput is called.
1124 *-----------------------------------------------------------------------
1128 JobLocalInput(int stream, Job *job)
1130 JobDoOutput(job, FALSE);
1132 #endif /* RMT_WILL_WATCH */
1135 *-----------------------------------------------------------------------
1137 * Execute the shell for the given job. Called from JobStart and
1144 * A shell is executed, outputs is altered and the Job structure added
1147 *-----------------------------------------------------------------------
1150 JobExec(Job *job, char **argv)
1152 int cpid; /* ID of new child */
1157 DEBUGF(JOB, ("Running %s %sly\n", job->node->name,
1158 job->flags&JOB_REMOTE?"remote":"local"));
1159 DEBUGF(JOB, ("\tCommand: "));
1160 for (i = 0; argv[i] != NULL; i++) {
1161 DEBUGF(JOB, ("%s ", argv[i]));
1163 DEBUGF(JOB, ("\n"));
1167 * Some jobs produce no output and it's disconcerting to have
1168 * no feedback of their running (since they produce no output, the
1169 * banner with their name in it never appears). This is an attempt to
1170 * provide that feedback, even if nothing follows it.
1172 if ((lastNode != job->node) && (job->flags & JOB_FIRST) &&
1173 !(job->flags & JOB_SILENT)) {
1174 MESSAGE(stdout, job->node);
1175 lastNode = job->node;
1179 if (job->flags & JOB_REMOTE) {
1182 #endif /* RMT_NO_EXEC */
1184 if ((cpid = vfork()) == -1) {
1185 Punt("Cannot fork");
1186 } else if (cpid == 0) {
1189 * Must duplicate the input stream down to the child's input and
1190 * reset it to the beginning (again). Since the stream was marked
1191 * close-on-exec, we must clear that bit in the new input.
1193 if (dup2(FILENO(job->cmdFILE), 0) == -1)
1194 Punt("Cannot dup2: %s", strerror(errno));
1195 (void) fcntl(0, F_SETFD, 0);
1196 (void) lseek(0, (off_t)0, SEEK_SET);
1200 * Set up the child's output to be routed through the pipe
1201 * we've created for it.
1203 if (dup2(job->outPipe, 1) == -1)
1204 Punt("Cannot dup2: %s", strerror(errno));
1207 * We're capturing output in a file, so we duplicate the
1208 * descriptor to the temporary file into the standard
1211 if (dup2(job->outFd, 1) == -1)
1212 Punt("Cannot dup2: %s", strerror(errno));
1215 * The output channels are marked close on exec. This bit was
1216 * duplicated by the dup2 (on some systems), so we have to clear
1217 * it before routing the shell's error output to the same place as
1218 * its standard output.
1220 (void) fcntl(1, F_SETFD, 0);
1221 if (dup2(1, 2) == -1)
1222 Punt("Cannot dup2: %s", strerror(errno));
1226 * We want to switch the child into a different process family so
1227 * we can kill it and all its descendants in one fell swoop,
1228 * by killing its process family, but not commit suicide.
1233 (void) setpgid(0, getpid());
1235 #endif /* USE_PGRP */
1238 if (job->flags & JOB_REMOTE) {
1239 Rmt_Exec(shellPath, argv, FALSE);
1242 (void) execv(shellPath, argv);
1244 (void) write(STDERR_FILENO, "Could not execute shell\n",
1245 sizeof("Could not execute shell"));
1249 long omask = sigblock(sigmask(SIGCHLD));
1253 if (usePipes && (job->flags & JOB_FIRST) ) {
1255 * The first time a job is run for a node, we set the current
1256 * position in the buffer to the beginning and mark another
1257 * stream to watch in the outputs mask
1260 struct kevent kev[2];
1264 #ifdef RMT_WILL_WATCH
1265 Rmt_Watch(job->inPipe, JobLocalInput, job);
1266 #elif defined(USE_KQUEUE)
1267 EV_SET(&kev[0], job->inPipe, EVFILT_READ, EV_ADD, 0, 0, job);
1268 EV_SET(&kev[1], job->pid, EVFILT_PROC, EV_ADD | EV_ONESHOT,
1269 NOTE_EXIT, 0, NULL);
1270 if (kevent(kqfd, kev, 2, NULL, 0, NULL) != 0) {
1271 /* kevent() will fail if the job is already finished */
1272 if (errno != EINTR && errno != EBADF && errno != ESRCH)
1273 Punt("kevent: %s", strerror(errno));
1276 FD_SET(job->inPipe, &outputs);
1277 #endif /* RMT_WILL_WATCH */
1280 if (job->flags & JOB_REMOTE) {
1284 job->rmtID = Rmt_LastID(job->pid);
1289 * XXX: Used to not happen if REMOTE. Why?
1291 if (job->cmdFILE != NULL && job->cmdFILE != stdout) {
1292 (void) fclose(job->cmdFILE);
1293 job->cmdFILE = NULL;
1297 (void) sigsetmask(omask);
1305 * Now the job is actually running, add it to the table.
1308 (void) Lst_AtEnd(jobs, (void *)job);
1309 if (nJobs == maxJobs) {
1315 *-----------------------------------------------------------------------
1317 * Create the argv needed to execute the shell for a given job.
1324 *-----------------------------------------------------------------------
1327 JobMakeArgv(Job *job, char **argv)
1330 static char args[10]; /* For merged arguments */
1332 argv[0] = shellName;
1335 if ((commandShell->exit && (*commandShell->exit != '-')) ||
1336 (commandShell->echo && (*commandShell->echo != '-')))
1339 * At least one of the flags doesn't have a minus before it, so
1340 * merge them together. Have to do this because the *(&(@*#*&#$#
1341 * Bourne shell thinks its second argument is a file to source.
1342 * Grrrr. Note the ten-character limitation on the combined arguments.
1344 (void)sprintf(args, "-%s%s",
1345 ((job->flags & JOB_IGNERR) ? "" :
1346 (commandShell->exit ? commandShell->exit : "")),
1347 ((job->flags & JOB_SILENT) ? "" :
1348 (commandShell->echo ? commandShell->echo : "")));
1355 if (!(job->flags & JOB_IGNERR) && commandShell->exit) {
1356 argv[argc] = commandShell->exit;
1359 if (!(job->flags & JOB_SILENT) && commandShell->echo) {
1360 argv[argc] = commandShell->echo;
1368 *-----------------------------------------------------------------------
1370 * Restart a job that stopped for some reason.
1376 * jobFull will be set if the job couldn't be run.
1378 *-----------------------------------------------------------------------
1381 JobRestart(Job *job)
1387 if (job->flags & JOB_REMIGRATE) {
1390 verboseRemigrates ||
1393 (void) fprintf(stdout, "*** remigrating %x(%s)\n",
1394 job->pid, job->node->name);
1395 (void) fflush(stdout);
1399 if (!Rmt_ReExport(job->pid, job->node, &host)) {
1400 if (verboseRemigrates || DEBUG(JOB)) {
1401 (void) fprintf(stdout, "*** couldn't migrate...\n");
1402 (void) fflush(stdout);
1405 if (nLocal != maxLocal) {
1407 * Job cannot be remigrated, but there's room on the local
1408 * machine, so resume the job and note that another
1409 * local job has started.
1413 verboseRemigrates ||
1416 (void) fprintf(stdout, "*** resuming on local machine\n");
1417 (void) fflush(stdout);
1419 KILL(job->pid, SIGCONT);
1422 job->flags &= ~(JOB_REMIGRATE|JOB_RESUME|JOB_REMOTE);
1423 job->flags |= JOB_CONTINUING;
1425 job->flags &= ~(JOB_REMIGRATE|JOB_RESUME);
1429 * Job cannot be restarted. Mark the table as full and
1430 * place the job back on the list of stopped jobs.
1434 verboseRemigrates ||
1437 (void) fprintf(stdout, "*** holding\n");
1438 (void) fflush(stdout);
1440 (void)Lst_AtFront(stoppedJobs, (void *)job);
1442 DEBUGF(JOB, ("Job queue is full.\n"));
1448 * Clear out the remigrate and resume flags. Set the continuing
1449 * flag so we know later on that the process isn't exiting just
1450 * because of a signal.
1452 job->flags &= ~(JOB_REMIGRATE|JOB_RESUME);
1453 job->flags |= JOB_CONTINUING;
1458 (void)Lst_AtEnd(jobs, (void *)job);
1460 if (nJobs == maxJobs) {
1462 DEBUGF(JOB, ("Job queue is full.\n"));
1464 } else if (job->flags & JOB_RESTART) {
1466 * Set up the control arguments to the shell. This is based on the
1467 * flags set earlier for this job. If the JOB_IGNERR flag is clear,
1468 * the 'exit' flag of the commandShell is used to cause it to exit
1469 * upon receiving an error. If the JOB_SILENT flag is clear, the
1470 * 'echo' flag of the commandShell is used to get it to start echoing
1471 * as soon as it starts processing commands.
1475 JobMakeArgv(job, argv);
1477 DEBUGF(JOB, ("Restarting %s...", job->node->name));
1479 if ((job->node->type&OP_NOEXPORT) ||
1480 (nLocal < maxLocal && runLocalFirst)
1482 || !Rmt_Export(shellPath, argv, job)
1484 || !Rmt_Begin(shellPath, argv, job->node)
1488 if (((nLocal >= maxLocal) && !(job->flags & JOB_SPECIAL))) {
1490 * Can't be exported and not allowed to run locally -- put it
1491 * back on the hold queue and mark the table full
1493 DEBUGF(JOB, ("holding\n"));
1494 (void)Lst_AtFront(stoppedJobs, (void *)job);
1496 DEBUGF(JOB, ("Job queue is full.\n"));
1500 * Job may be run locally.
1502 DEBUGF(JOB, ("running locally\n"));
1503 job->flags &= ~JOB_REMOTE;
1509 * Can be exported. Hooray!
1511 DEBUGF(JOB, ("exporting\n"));
1512 job->flags |= JOB_REMOTE;
1518 * The job has stopped and needs to be restarted. Why it stopped,
1521 DEBUGF(JOB, ("Resuming %s...", job->node->name));
1522 if (((job->flags & JOB_REMOTE) ||
1523 (nLocal < maxLocal) ||
1525 (((job->flags & JOB_SPECIAL) &&
1526 (job->node->type & OP_NOEXPORT)) &&
1527 (maxLocal == 0))) &&
1529 ((job->flags & JOB_SPECIAL) &&
1530 (maxLocal == 0))) &&
1535 * If the job is remote, it's ok to resume it as long as the
1536 * maximum concurrency won't be exceeded. If it's local and
1537 * we haven't reached the local concurrency limit already (or the
1538 * job must be run locally and maxLocal is 0), it's also ok to
1544 #ifdef RMT_WANTS_SIGNALS
1545 if (job->flags & JOB_REMOTE) {
1546 error = !Rmt_Signal(job, SIGCONT);
1548 #endif /* RMT_WANTS_SIGNALS */
1549 error = (KILL(job->pid, SIGCONT) != 0);
1553 * Make sure the user knows we've continued the beast and
1554 * actually put the thing in the job table.
1556 job->flags |= JOB_CONTINUING;
1557 W_SETTERMSIG(&status, SIGCONT);
1558 JobFinish(job, &status);
1560 job->flags &= ~(JOB_RESUME|JOB_CONTINUING);
1561 DEBUGF(JOB, ("done\n"));
1563 Error("couldn't resume %s: %s",
1564 job->node->name, strerror(errno));
1566 W_SETEXITSTATUS(&status, 1);
1567 JobFinish(job, &status);
1571 * Job cannot be restarted. Mark the table as full and
1572 * place the job back on the list of stopped jobs.
1574 DEBUGF(JOB, ("table full\n"));
1575 (void) Lst_AtFront(stoppedJobs, (void *)job);
1577 DEBUGF(JOB, ("Job queue is full.\n"));
1583 *-----------------------------------------------------------------------
1585 * Start a target-creation process going for the target described
1586 * by the graph node gn.
1589 * JOB_ERROR if there was an error in the commands, JOB_FINISHED
1590 * if there isn't actually anything left to do for the job and
1591 * JOB_RUNNING if the job has been started.
1594 * A new Job node is created and added to the list of running
1595 * jobs. PMake is forked and a child shell created.
1596 *-----------------------------------------------------------------------
1599 JobStart(GNode *gn, int flags, Job *previous)
1601 Job *job; /* new job descriptor */
1602 char *argv[4]; /* Argument vector to shell */
1603 Boolean cmdsOK; /* true if the nodes commands were all right */
1604 Boolean local; /* Set true if the job was run locally */
1605 Boolean noExec; /* Set true if we decide not to run the job */
1606 int tfd; /* File descriptor for temp file */
1608 if (previous != NULL) {
1609 previous->flags &= ~(JOB_FIRST|JOB_IGNERR|JOB_SILENT|JOB_REMOTE);
1612 job = (Job *) emalloc(sizeof(Job));
1617 job->tailCmds = NULL;
1620 * Set the initial value of the flags for this job based on the global
1621 * ones and the node's attributes... Any flags supplied by the caller
1622 * are also added to the field.
1625 if (Targ_Ignore(gn)) {
1626 job->flags |= JOB_IGNERR;
1628 if (Targ_Silent(gn)) {
1629 job->flags |= JOB_SILENT;
1631 job->flags |= flags;
1634 * Check the commands now so any attributes from .DEFAULT have a chance
1635 * to migrate to the node
1637 if (!compatMake && job->flags & JOB_FIRST) {
1638 cmdsOK = Job_CheckCommands(gn, Error);
1644 * If the -n flag wasn't given, we open up OUR (not the child's)
1645 * temporary file to stuff commands in it. The thing is rd/wr so we don't
1646 * need to reopen it to feed it to the shell. If the -n flag *was* given,
1647 * we just set the file to be stdout. Cute, huh?
1649 if ((gn->type & OP_MAKE) || (!noExecute && !touchFlag)) {
1651 * We're serious here, but if the commands were bogus, we're
1658 (void) strcpy(tfile, TMPPAT);
1659 if ((tfd = mkstemp(tfile)) == -1)
1660 Punt("Cannot create temp file: %s", strerror(errno));
1661 job->cmdFILE = fdopen(tfd, "w+");
1663 if (job->cmdFILE == NULL) {
1665 Punt("Could not open %s", tfile);
1667 (void) fcntl(FILENO(job->cmdFILE), F_SETFD, 1);
1669 * Send the commands to the command file, flush all its buffers then
1670 * rewind and remove the thing.
1675 * used to be backwards; replace when start doing multiple commands
1680 * Be compatible: If this is the first time for this node,
1681 * verify its commands are ok and open the commands list for
1682 * sequential access by later invocations of JobStart.
1683 * Once that is done, we take the next command off the list
1684 * and print it to the command file. If the command was an
1685 * ellipsis, note that there's nothing more to execute.
1687 if ((job->flags&JOB_FIRST) && (Lst_Open(gn->commands) != SUCCESS)){
1690 LstNode ln = Lst_Next(gn->commands);
1693 JobPrintCommand((void *) Lst_Datum(ln),
1697 Lst_Close(gn->commands);
1699 if (noExec && !(job->flags & JOB_FIRST)) {
1701 * If we're not going to execute anything, the job
1702 * is done and we need to close down the various
1703 * file descriptors we've opened for output, then
1704 * call JobDoOutput to catch the final characters or
1705 * send the file to the screen... Note that the i/o streams
1706 * are only open if this isn't the first job.
1707 * Note also that this could not be done in
1708 * Job_CatchChildren b/c it wasn't clear if there were
1709 * more commands to execute or not...
1716 * We can do all the commands at once. hooray for sanity
1719 Lst_ForEach(gn->commands, JobPrintCommand, (void *)job);
1722 * If we didn't print out any commands to the shell script,
1723 * there's not much point in executing the shell, is there?
1725 if (numCommands == 0) {
1729 } else if (noExecute) {
1731 * Not executing anything -- just print all the commands to stdout
1732 * in one fell swoop. This will still set up job->tailCmds correctly.
1734 if (lastNode != gn) {
1735 MESSAGE(stdout, gn);
1738 job->cmdFILE = stdout;
1740 * Only print the commands if they're ok, but don't die if they're
1741 * not -- just let the user know they're bad and keep going. It
1742 * doesn't do any harm in this case and may do some good.
1745 Lst_ForEach(gn->commands, JobPrintCommand, (void *)job);
1748 * Don't execute the shell, thank you.
1753 * Just touch the target and note that no shell should be executed.
1754 * Set cmdFILE to stdout to make life easier. Check the commands, too,
1755 * but don't die if they're no good -- it does no harm to keep working
1758 job->cmdFILE = stdout;
1759 Job_Touch(gn, job->flags&JOB_SILENT);
1764 * If we're not supposed to execute a shell, don't.
1768 * Unlink and close the command file if we opened one
1770 if (job->cmdFILE != stdout) {
1771 if (job->cmdFILE != NULL)
1772 (void) fclose(job->cmdFILE);
1774 (void) fflush(stdout);
1778 * We only want to work our way up the graph if we aren't here because
1779 * the commands for the job were no good.
1782 if (aborting == 0) {
1783 if (job->tailCmds != NULL) {
1784 Lst_ForEachFrom(job->node->commands, job->tailCmds,
1788 job->node->made = MADE;
1789 Make_Update(job->node);
1792 return(JOB_FINISHED);
1798 (void) fflush(job->cmdFILE);
1802 * Set up the control arguments to the shell. This is based on the flags
1803 * set earlier for this job.
1805 JobMakeArgv(job, argv);
1808 * If we're using pipes to catch output, create the pipe by which we'll
1809 * get the shell's output. If we're using files, print out that we're
1810 * starting a job and then set up its temporary-file name.
1812 if (!compatMake || (job->flags & JOB_FIRST)) {
1816 Punt("Cannot create pipe: %s", strerror(errno));
1817 job->inPipe = fd[0];
1818 job->outPipe = fd[1];
1819 (void) fcntl(job->inPipe, F_SETFD, 1);
1820 (void) fcntl(job->outPipe, F_SETFD, 1);
1822 (void) fprintf(stdout, "Remaking `%s'\n", gn->name);
1823 (void) fflush(stdout);
1824 (void) strcpy(job->outFile, TMPPAT);
1825 if ((job->outFd = mkstemp(job->outFile)) == -1)
1826 Punt("cannot create temp file: %s", strerror(errno));
1827 (void) fcntl(job->outFd, F_SETFD, 1);
1832 if (!(gn->type & OP_NOEXPORT) && !(runLocalFirst && nLocal < maxLocal)) {
1834 local = !Rmt_Export(shellPath, argv, job);
1836 local = !Rmt_Begin(shellPath, argv, job->node);
1837 #endif /* RMT_NO_EXEC */
1839 job->flags |= JOB_REMOTE;
1845 if (local && (((nLocal >= maxLocal) &&
1846 !(job->flags & JOB_SPECIAL) &&
1848 (!(gn->type & OP_NOEXPORT) || (maxLocal != 0))
1855 * The job can only be run locally, but we've hit the limit of
1856 * local concurrency, so put the job on hold until some other job
1857 * finishes. Note that the special jobs (.BEGIN, .INTERRUPT and .END)
1858 * may be run locally even when the local limit has been reached
1859 * (e.g. when maxLocal == 0), though they will be exported if at
1860 * all possible. In addition, any target marked with .NOEXPORT will
1861 * be run locally if maxLocal is 0.
1865 DEBUGF(JOB, ("Can only run job locally.\n"));
1866 job->flags |= JOB_RESTART;
1867 (void) Lst_AtEnd(stoppedJobs, (void *)job);
1869 if ((nLocal >= maxLocal) && local) {
1871 * If we're running this job locally as a special case (see above),
1872 * at least say the table is full.
1875 DEBUGF(JOB, ("Local job queue is full.\n"));
1879 return(JOB_RUNNING);
1883 JobOutput(Job *job, char *cp, char *endp, int msg)
1887 if (commandShell->noPrint) {
1888 ecp = strstr(cp, commandShell->noPrint);
1889 while (ecp != NULL) {
1892 if (msg && job->node != lastNode) {
1893 MESSAGE(stdout, job->node);
1894 lastNode = job->node;
1897 * The only way there wouldn't be a newline after
1898 * this line is if it were the last in the buffer.
1899 * however, since the non-printable comes after it,
1900 * there must be a newline, so we don't print one.
1902 (void) fprintf(stdout, "%s", cp);
1903 (void) fflush(stdout);
1905 cp = ecp + commandShell->noPLen;
1908 * Still more to print, look again after skipping
1909 * the whitespace following the non-printable
1913 while (*cp == ' ' || *cp == '\t' || *cp == '\n') {
1916 ecp = strstr(cp, commandShell->noPrint);
1926 *-----------------------------------------------------------------------
1928 * This function is called at different times depending on
1929 * whether the user has specified that output is to be collected
1930 * via pipes or temporary files. In the former case, we are called
1931 * whenever there is something to read on the pipe. We collect more
1932 * output from the given job and store it in the job's outBuf. If
1933 * this makes up a line, we print it tagged by the job's identifier,
1935 * If output has been collected in a temporary file, we open the
1936 * file and read it line by line, transfering it to our own
1937 * output channel until the file is empty. At which point we
1938 * remove the temporary file.
1939 * In both cases, however, we keep our figurative eye out for the
1940 * 'noPrint' line for the shell from which the output came. If
1941 * we recognize a line, we don't print it. If the command is not
1942 * alone on the line (the character after it is not \0 or \n), we
1943 * do print whatever follows it.
1949 * curPos may be shifted as may the contents of outBuf.
1950 *-----------------------------------------------------------------------
1953 JobDoOutput(Job *job, Boolean finish)
1955 Boolean gotNL = FALSE; /* true if got a newline */
1956 Boolean fbuf; /* true if our buffer filled up */
1957 int nr; /* number of bytes read */
1958 int i; /* auxiliary index into outBuf */
1959 int max; /* limit for i (end of current data) */
1960 int nRead; /* (Temporary) number of bytes read */
1962 FILE *oFILE; /* Stream pointer to shell's output file */
1968 * Read as many bytes as will fit in the buffer.
1974 nRead = read(job->inPipe, &job->outBuf[job->curPos],
1975 JOB_BUFSIZE - job->curPos);
1977 DEBUGF(JOB, ("JobDoOutput(piperead)"));
1984 * If we hit the end-of-file (the job is dead), we must flush its
1985 * remaining output, so pretend we read a newline if there's any
1986 * output remaining in the buffer.
1987 * Also clear the 'finish' flag so we stop looping.
1989 if ((nr == 0) && (job->curPos != 0)) {
1990 job->outBuf[job->curPos] = '\n';
1993 } else if (nr == 0) {
1998 * Look for the last newline in the bytes we just got. If there is
1999 * one, break out of the loop with 'i' as its index and gotNL set
2002 max = job->curPos + nr;
2003 for (i = job->curPos + nr - 1; i >= job->curPos; i--) {
2004 if (job->outBuf[i] == '\n') {
2007 } else if (job->outBuf[i] == '\0') {
2011 job->outBuf[i] = ' ';
2017 if (job->curPos == JOB_BUFSIZE) {
2019 * If we've run out of buffer space, we have no choice
2020 * but to print the stuff. sigh.
2026 if (gotNL || fbuf) {
2028 * Need to send the output to the screen. Null terminate it
2029 * first, overwriting the newline character if there was one.
2030 * So long as the line isn't one we should filter (according
2031 * to the shell description), we print the line, preceded
2032 * by a target banner if this target isn't the same as the
2033 * one for which we last printed something.
2034 * The rest of the data in the buffer are then shifted down
2035 * to the start of the buffer and curPos is set accordingly.
2037 job->outBuf[i] = '\0';
2038 if (i >= job->curPos) {
2041 cp = JobOutput(job, job->outBuf, &job->outBuf[i], FALSE);
2044 * There's still more in that thar buffer. This time, though,
2045 * we know there's no newline at the end, so we add one of
2046 * our own free will.
2049 if (job->node != lastNode) {
2050 MESSAGE(stdout, job->node);
2051 lastNode = job->node;
2053 (void) fprintf(stdout, "%s%s", cp, gotNL ? "\n" : "");
2054 (void) fflush(stdout);
2058 /* shift the remaining characters down */
2059 (void) memcpy(job->outBuf, &job->outBuf[i + 1], max - (i + 1));
2060 job->curPos = max - (i + 1);
2064 * We have written everything out, so we just start over
2065 * from the start of the buffer. No copying. No nothing.
2072 * If the finish flag is true, we must loop until we hit
2073 * end-of-file on the pipe. This is guaranteed to happen
2074 * eventually since the other end of the pipe is now closed
2075 * (we closed it explicitly and the child has exited). When
2076 * we do get an EOF, finish will be set FALSE and we'll fall
2083 * We've been called to retrieve the output of the job from the
2084 * temporary file where it's been squirreled away. This consists of
2085 * opening the file, reading the output line by line, being sure not
2086 * to print the noPrint line for the shell we used, then close and
2087 * remove the temporary file. Very simple.
2089 * Change to read in blocks and do FindSubString type things as for
2090 * pipes? That would allow for "@echo -n..."
2092 oFILE = fopen(job->outFile, "r");
2093 if (oFILE != NULL) {
2094 (void) fprintf(stdout, "Results of making %s:\n", job->node->name);
2095 (void) fflush(stdout);
2096 while (fgets(inLine, sizeof(inLine), oFILE) != NULL) {
2097 char *cp, *endp, *oendp;
2100 oendp = endp = inLine + strlen(inLine);
2101 if (endp[-1] == '\n') {
2104 cp = JobOutput(job, inLine, endp, FALSE);
2107 * There's still more in that thar buffer. This time, though,
2108 * we know there's no newline at the end, so we add one of
2109 * our own free will.
2111 (void) fprintf(stdout, "%s", cp);
2112 (void) fflush(stdout);
2113 if (endp != oendp) {
2114 (void) fprintf(stdout, "\n");
2115 (void) fflush(stdout);
2118 (void) fclose(oFILE);
2119 (void) eunlink(job->outFile);
2125 *-----------------------------------------------------------------------
2126 * Job_CatchChildren --
2127 * Handle the exit of a child. Called from Make_Make.
2133 * The job descriptor is removed from the list of children.
2136 * We do waits, blocking or not, according to the wisdom of our
2137 * caller, until there are no more children to report. For each
2138 * job, call JobFinish to finish things off. This will take care of
2139 * putting jobs on the stoppedJobs queue.
2141 *-----------------------------------------------------------------------
2144 Job_CatchChildren(Boolean block)
2146 int pid; /* pid of dead child */
2147 Job *job; /* job descriptor for dead child */
2148 LstNode jnode; /* list element for finding job */
2149 int status; /* Exit/termination status */
2152 * Don't even bother if we know there's no one around.
2158 while ((pid = waitpid((pid_t) -1, &status,
2159 (block?0:WNOHANG)|WUNTRACED)) > 0)
2161 DEBUGF(JOB, ("Process %d exited or stopped.\n", pid));
2163 jnode = Lst_Find(jobs, (void *)&pid, JobCmpPid);
2165 if (jnode == NULL) {
2166 if (WIFSIGNALED(status) && (WTERMSIG(status) == SIGCONT)) {
2167 jnode = Lst_Find(stoppedJobs, (void *) &pid, JobCmpPid);
2168 if (jnode == NULL) {
2169 Error("Resumed child (%d) not in table", pid);
2172 job = (Job *)Lst_Datum(jnode);
2173 (void) Lst_Remove(stoppedJobs, jnode);
2175 Error("Child (%d) not in table?", pid);
2179 job = (Job *) Lst_Datum(jnode);
2180 (void) Lst_Remove(jobs, jnode);
2182 DEBUGF(JOB, ("Job queue is no longer full.\n"));
2185 if (!(job->flags & JOB_REMOTE)) {
2186 DEBUGF(JOB, ("Job queue has one fewer local process.\n"));
2194 JobFinish(job, &status);
2199 *-----------------------------------------------------------------------
2200 * Job_CatchOutput --
2201 * Catch the output from our children, if we're using
2202 * pipes do so. Otherwise just block time until we get a
2203 * signal (most likely a SIGCHLD) since there's no point in
2204 * just spinning when there's nothing to do and the reaping
2205 * of a child can wait for a while.
2211 * Output is read from pipes if we're piping.
2212 * -----------------------------------------------------------------------
2215 Job_CatchOutput(void)
2220 struct kevent kev[KEV_SIZE];
2223 struct timeval timeout;
2228 #ifdef RMT_WILL_WATCH
2229 int pnJobs; /* Previous nJobs */
2232 (void) fflush(stdout);
2233 #ifdef RMT_WILL_WATCH
2237 * It is possible for us to be called with nJobs equal to 0. This happens
2238 * if all the jobs finish and a job that is stopped cannot be run
2239 * locally (eg if maxLocal is 0) and cannot be exported. The job will
2240 * be placed back on the stoppedJobs queue, Job_Empty() will return false,
2241 * Make_Run will call us again when there's nothing for which to wait.
2242 * nJobs never changes, so we loop forever. Hence the check. It could
2243 * be argued that we should sleep for a bit so as not to swamp the
2244 * exportation system with requests. Perhaps we should.
2246 * NOTE: IT IS THE RESPONSIBILITY OF Rmt_Wait TO CALL Job_CatchChildren
2247 * IN A TIMELY FASHION TO CATCH ANY LOCALLY RUNNING JOBS THAT EXIT.
2248 * It may use the variable nLocal to determine if it needs to call
2249 * Job_CatchChildren (if nLocal is 0, there's nothing for which to
2252 while (nJobs != 0 && pnJobs == nJobs) {
2258 if ((nfds = kevent(kqfd, NULL, 0, kev, KEV_SIZE, NULL)) == -1) {
2260 Punt("kevent: %s", strerror(errno));
2262 for (i = 0; i < nfds; i++) {
2263 if (kev[i].flags & EV_ERROR) {
2264 warnc(kev[i].data, "kevent");
2267 switch (kev[i].filter) {
2269 JobDoOutput(kev[i].udata, FALSE);
2272 /* Just wake up and let Job_CatchChildren() collect the
2273 * terminated job. */
2280 timeout.tv_sec = SEL_SEC;
2281 timeout.tv_usec = SEL_USEC;
2283 if ((nfds = select(FD_SETSIZE, &readfds, (fd_set *) 0,
2284 (fd_set *) 0, &timeout)) <= 0)
2287 if (Lst_Open(jobs) == FAILURE) {
2288 Punt("Cannot open job table");
2290 while (nfds && (ln = Lst_Next(jobs)) != NULL) {
2291 job = (Job *) Lst_Datum(ln);
2292 if (FD_ISSET(job->inPipe, &readfds)) {
2293 JobDoOutput(job, FALSE);
2299 #endif /* !USE_KQUEUE */
2301 #endif /* RMT_WILL_WATCH */
2305 *-----------------------------------------------------------------------
2307 * Start the creation of a target. Basically a front-end for
2308 * JobStart used by the Make module.
2314 * Another job is started.
2316 *-----------------------------------------------------------------------
2321 (void) JobStart(gn, 0, NULL);
2325 *-----------------------------------------------------------------------
2327 * Initialize the process module, given a maximum number of jobs, and
2328 * a maximum number of local jobs.
2334 * lists and counters are initialized
2335 *-----------------------------------------------------------------------
2338 Job_Init(int maxproc, int maxlocal)
2340 GNode *begin; /* node for commands to do at the very start */
2342 jobs = Lst_Init(FALSE);
2343 stoppedJobs = Lst_Init(FALSE);
2345 maxLocal = maxlocal;
2355 if (maxJobs == 1 || beVerbose == 0
2361 * If only one job can run at a time, there's no need for a banner,
2369 if (shellPath == NULL) {
2371 * The user didn't specify a shell to use, so we are using the
2372 * default one... Both the absolute path and the last component
2373 * must be set. The last component is taken from the 'name' field
2374 * of the default shell description pointed-to by commandShell.
2375 * All default shells are located in _PATH_DEFSHELLDIR.
2377 shellName = commandShell->name;
2378 shellPath = str_concat(_PATH_DEFSHELLDIR, shellName, STR_ADDSLASH);
2381 if (commandShell->exit == NULL) {
2382 commandShell->exit = "";
2384 if (commandShell->echo == NULL) {
2385 commandShell->echo = "";
2389 * Catch the four signals that POSIX specifies if they aren't ignored.
2390 * JobPassSig will take care of calling JobInterrupt if appropriate.
2392 if (signal(SIGINT, SIG_IGN) != SIG_IGN) {
2393 (void) signal(SIGINT, JobPassSig);
2395 if (signal(SIGHUP, SIG_IGN) != SIG_IGN) {
2396 (void) signal(SIGHUP, JobPassSig);
2398 if (signal(SIGQUIT, SIG_IGN) != SIG_IGN) {
2399 (void) signal(SIGQUIT, JobPassSig);
2401 if (signal(SIGTERM, SIG_IGN) != SIG_IGN) {
2402 (void) signal(SIGTERM, JobPassSig);
2405 * There are additional signals that need to be caught and passed if
2406 * either the export system wants to be told directly of signals or if
2407 * we're giving each job its own process group (since then it won't get
2408 * signals from the terminal driver as we own the terminal)
2410 #if defined(RMT_WANTS_SIGNALS) || defined(USE_PGRP)
2411 if (signal(SIGTSTP, SIG_IGN) != SIG_IGN) {
2412 (void) signal(SIGTSTP, JobPassSig);
2414 if (signal(SIGTTOU, SIG_IGN) != SIG_IGN) {
2415 (void) signal(SIGTTOU, JobPassSig);
2417 if (signal(SIGTTIN, SIG_IGN) != SIG_IGN) {
2418 (void) signal(SIGTTIN, JobPassSig);
2420 if (signal(SIGWINCH, SIG_IGN) != SIG_IGN) {
2421 (void) signal(SIGWINCH, JobPassSig);
2426 if ((kqfd = kqueue()) == -1) {
2427 Punt("kqueue: %s", strerror(errno));
2431 begin = Targ_FindNode(".BEGIN", TARG_NOCREATE);
2433 if (begin != NULL) {
2434 JobStart(begin, JOB_SPECIAL, (Job *)0);
2437 #ifndef RMT_WILL_WATCH
2438 Job_CatchChildren(!usePipes);
2439 #endif /* RMT_WILL_WATCH */
2442 postCommands = Targ_FindNode(".END", TARG_CREATE);
2446 *-----------------------------------------------------------------------
2448 * See if the job table is full. It is considered full if it is OR
2449 * if we are in the process of aborting OR if we have
2450 * reached/exceeded our local quota. This prevents any more jobs
2454 * TRUE if the job table is full, FALSE otherwise
2457 *-----------------------------------------------------------------------
2462 return(aborting || jobFull);
2466 *-----------------------------------------------------------------------
2468 * See if the job table is empty. Because the local concurrency may
2469 * be set to 0, it is possible for the job table to become empty,
2470 * while the list of stoppedJobs remains non-empty. In such a case,
2471 * we want to restart as many jobs as we can.
2474 * TRUE if it is. FALSE if it ain't.
2479 * -----------------------------------------------------------------------
2485 if (!Lst_IsEmpty(stoppedJobs) && !aborting) {
2487 * The job table is obviously not full if it has no jobs in
2488 * it...Try and restart the stopped jobs.
2502 *-----------------------------------------------------------------------
2504 * Find a matching shell in 'shells' given its final component.
2507 * A pointer to the Shell structure.
2512 *-----------------------------------------------------------------------
2515 JobMatchShell(char *name)
2517 Shell *sh; /* Pointer into shells table */
2518 Shell *match; /* Longest-matching shell */
2523 eoname = name + strlen(name);
2527 for (sh = shells; sh->name != NULL; sh++) {
2528 for (cp1 = eoname - strlen(sh->name), cp2 = sh->name;
2529 *cp1 != '\0' && *cp1 == *cp2;
2535 } else if (match == NULL || strlen(match->name) < strlen(sh->name)) {
2539 return(match == NULL ? sh : match);
2543 *-----------------------------------------------------------------------
2545 * Parse a shell specification and set up commandShell, shellPath
2546 * and shellName appropriately.
2549 * FAILURE if the specification was incorrect.
2552 * commandShell points to a Shell structure (either predefined or
2553 * created from the shell spec), shellPath is the full path of the
2554 * shell described by commandShell, while shellName is just the
2555 * final component of shellPath.
2558 * A shell specification consists of a .SHELL target, with dependency
2559 * operator, followed by a series of blank-separated words. Double
2560 * quotes can be used to use blanks in words. A backslash escapes
2561 * anything (most notably a double-quote and a space) and
2562 * provides the functionality it does in C. Each word consists of
2563 * keyword and value separated by an equal sign. There should be no
2564 * unnecessary spaces in the word. The keywords are as follows:
2565 * name Name of shell.
2566 * path Location of shell. Overrides "name" if given
2567 * quiet Command to turn off echoing.
2568 * echo Command to turn echoing on
2569 * filter Result of turning off echoing that shouldn't be
2571 * echoFlag Flag to turn echoing on at the start
2572 * errFlag Flag to turn error checking on at the start
2573 * hasErrCtl True if shell has error checking control
2574 * check Command to turn on error checking if hasErrCtl
2575 * is TRUE or template of command to echo a command
2576 * for which error checking is off if hasErrCtl is
2578 * ignore Command to turn off error checking if hasErrCtl
2579 * is TRUE or template of command to execute a
2580 * command so as to ignore any errors it returns if
2581 * hasErrCtl is FALSE.
2583 *-----------------------------------------------------------------------
2586 Job_ParseShell(char *line)
2594 Boolean fullSpec = FALSE;
2596 while (isspace((unsigned char) *line)) {
2599 words = brk_string(line, &wordCount, TRUE);
2601 memset(&newShell, 0, sizeof(newShell));
2604 * Parse the specification by keyword
2606 for (path = NULL, argc = wordCount - 1, argv = words + 1;
2609 if (strncmp(*argv, "path=", 5) == 0) {
2611 } else if (strncmp(*argv, "name=", 5) == 0) {
2612 newShell.name = &argv[0][5];
2614 if (strncmp(*argv, "quiet=", 6) == 0) {
2615 newShell.echoOff = &argv[0][6];
2616 } else if (strncmp(*argv, "echo=", 5) == 0) {
2617 newShell.echoOn = &argv[0][5];
2618 } else if (strncmp(*argv, "filter=", 7) == 0) {
2619 newShell.noPrint = &argv[0][7];
2620 newShell.noPLen = strlen(newShell.noPrint);
2621 } else if (strncmp(*argv, "echoFlag=", 9) == 0) {
2622 newShell.echo = &argv[0][9];
2623 } else if (strncmp(*argv, "errFlag=", 8) == 0) {
2624 newShell.exit = &argv[0][8];
2625 } else if (strncmp(*argv, "hasErrCtl=", 10) == 0) {
2626 char c = argv[0][10];
2627 newShell.hasErrCtl = !((c != 'Y') && (c != 'y') &&
2628 (c != 'T') && (c != 't'));
2629 } else if (strncmp(*argv, "check=", 6) == 0) {
2630 newShell.errCheck = &argv[0][6];
2631 } else if (strncmp(*argv, "ignore=", 7) == 0) {
2632 newShell.ignErr = &argv[0][7];
2634 Parse_Error(PARSE_FATAL, "Unknown keyword \"%s\"",
2644 * If no path was given, the user wants one of the pre-defined shells,
2645 * yes? So we find the one s/he wants with the help of JobMatchShell
2646 * and set things up the right way. shellPath will be set up by
2649 if (newShell.name == NULL) {
2650 Parse_Error(PARSE_FATAL, "Neither path nor name specified");
2653 commandShell = JobMatchShell(newShell.name);
2654 shellName = newShell.name;
2658 * The user provided a path. If s/he gave nothing else (fullSpec is
2659 * FALSE), try and find a matching shell in the ones we know of.
2660 * Else we just take the specification at its word and copy it
2661 * to a new location. In either case, we need to record the
2662 * path the user gave for the shell.
2665 path = strrchr(path, '/');
2671 if (newShell.name != NULL) {
2672 shellName = newShell.name;
2677 commandShell = JobMatchShell(shellName);
2679 commandShell = (Shell *) emalloc(sizeof(Shell));
2680 *commandShell = newShell;
2684 if (commandShell->echoOn && commandShell->echoOff) {
2685 commandShell->hasEchoCtl = TRUE;
2688 if (!commandShell->hasErrCtl) {
2689 if (commandShell->errCheck == NULL) {
2690 commandShell->errCheck = "";
2692 if (commandShell->ignErr == NULL) {
2693 commandShell->ignErr = "%s\n";
2700 *-----------------------------------------------------------------------
2702 * Handle the receipt of an interrupt.
2708 * All children are killed. Another job will be started if the
2709 * .INTERRUPT target was given.
2710 *-----------------------------------------------------------------------
2713 JobInterrupt(int runINTERRUPT, int signo)
2715 LstNode ln; /* element in job table */
2716 Job *job = NULL; /* job descriptor in that element */
2717 GNode *interrupt; /* the node describing the .INTERRUPT target */
2719 aborting = ABORT_INTERRUPT;
2721 (void) Lst_Open(jobs);
2722 while ((ln = Lst_Next(jobs)) != NULL) {
2723 job = (Job *) Lst_Datum(ln);
2725 if (!Targ_Precious(job->node)) {
2726 char *file = (job->node->path == NULL ?
2729 if (!noExecute && eunlink(file) != -1) {
2730 Error("*** %s removed", file);
2733 #ifdef RMT_WANTS_SIGNALS
2734 if (job->flags & JOB_REMOTE) {
2736 * If job is remote, let the Rmt module do the killing.
2738 if (!Rmt_Signal(job, signo)) {
2740 * If couldn't kill the thing, finish it out now with an
2741 * error code, since no exit report will come in likely.
2745 status.w_status = 0;
2746 status.w_retcode = 1;
2747 JobFinish(job, &status);
2749 } else if (job->pid) {
2750 KILL(job->pid, signo);
2754 DEBUGF(JOB, ("JobInterrupt passing signal to child %d.\n",
2756 KILL(job->pid, signo);
2758 #endif /* RMT_WANTS_SIGNALS */
2762 (void)Lst_Open(stoppedJobs);
2763 while ((ln = Lst_Next(stoppedJobs)) != NULL) {
2764 job = (Job *) Lst_Datum(ln);
2766 if (job->flags & JOB_RESTART) {
2767 DEBUGF(JOB, "JobInterrupt skipping job on stopped queue"
2768 "-- it was waiting to be restarted.\n");
2771 if (!Targ_Precious(job->node)) {
2772 char *file = (job->node->path == NULL ?
2775 if (eunlink(file) == 0) {
2776 Error("*** %s removed", file);
2780 * Resume the thing so it will take the signal.
2782 DEBUGF(JOB, ("JobInterrupt passing CONT to stopped child %d.\n", job->pid));
2783 KILL(job->pid, SIGCONT);
2784 #ifdef RMT_WANTS_SIGNALS
2785 if (job->flags & JOB_REMOTE) {
2787 * If job is remote, let the Rmt module do the killing.
2789 if (!Rmt_Signal(job, SIGINT)) {
2791 * If couldn't kill the thing, finish it out now with an
2792 * error code, since no exit report will come in likely.
2795 status.w_status = 0;
2796 status.w_retcode = 1;
2797 JobFinish(job, &status);
2799 } else if (job->pid) {
2800 DEBUGF(JOB, "JobInterrupt passing interrupt to stopped child %d.\n",
2802 KILL(job->pid, SIGINT);
2804 #endif /* RMT_WANTS_SIGNALS */
2807 Lst_Close(stoppedJobs);
2809 if (runINTERRUPT && !touchFlag) {
2810 interrupt = Targ_FindNode(".INTERRUPT", TARG_NOCREATE);
2811 if (interrupt != NULL) {
2812 ignoreErrors = FALSE;
2814 JobStart(interrupt, JOB_IGNDOTS, (Job *)0);
2817 #ifndef RMT_WILL_WATCH
2818 Job_CatchChildren(!usePipes);
2819 #endif /* RMT_WILL_WATCH */
2826 *-----------------------------------------------------------------------
2828 * Do final processing such as the running of the commands
2829 * attached to the .END target.
2832 * Number of errors reported.
2833 *-----------------------------------------------------------------------
2838 if (postCommands != NULL && !Lst_IsEmpty(postCommands->commands)) {
2840 Error("Errors reported so .END ignored");
2842 JobStart(postCommands, JOB_SPECIAL | JOB_IGNDOTS, NULL);
2846 #ifndef RMT_WILL_WATCH
2847 Job_CatchChildren(!usePipes);
2848 #endif /* RMT_WILL_WATCH */
2856 *-----------------------------------------------------------------------
2858 * Waits for all running jobs to finish and returns. Sets 'aborting'
2859 * to ABORT_WAIT to prevent other jobs from starting.
2865 * Currently running jobs finish.
2867 *-----------------------------------------------------------------------
2872 aborting = ABORT_WAIT;
2873 while (nJobs != 0) {
2875 #ifndef RMT_WILL_WATCH
2876 Job_CatchChildren(!usePipes);
2877 #endif /* RMT_WILL_WATCH */
2883 *-----------------------------------------------------------------------
2885 * Abort all currently running jobs without handling output or anything.
2886 * This function is to be called only in the event of a major
2887 * error. Most definitely NOT to be called from JobInterrupt.
2893 * All children are killed, not just the firstborn
2894 *-----------------------------------------------------------------------
2899 LstNode ln; /* element in job table */
2900 Job *job; /* the job descriptor in that element */
2903 aborting = ABORT_ERROR;
2907 (void) Lst_Open(jobs);
2908 while ((ln = Lst_Next(jobs)) != NULL) {
2909 job = (Job *) Lst_Datum(ln);
2912 * kill the child process with increasingly drastic signals to make
2913 * darn sure it's dead.
2915 #ifdef RMT_WANTS_SIGNALS
2916 if (job->flags & JOB_REMOTE) {
2917 Rmt_Signal(job, SIGINT);
2918 Rmt_Signal(job, SIGKILL);
2920 KILL(job->pid, SIGINT);
2921 KILL(job->pid, SIGKILL);
2924 KILL(job->pid, SIGINT);
2925 KILL(job->pid, SIGKILL);
2926 #endif /* RMT_WANTS_SIGNALS */
2931 * Catch as many children as want to report in at first, then give up
2933 while (waitpid((pid_t) -1, &foo, WNOHANG) > 0)
2939 *-----------------------------------------------------------------------
2940 * JobFlagForMigration --
2941 * Handle the eviction of a child. Called from RmtStatusChange.
2942 * Flags the child as remigratable and then suspends it. Takes
2943 * the ID of the host we used, for matching children.
2949 * The job descriptor is flagged for remigration.
2951 *-----------------------------------------------------------------------
2954 JobFlagForMigration(int hostID)
2956 Job *job; /* job descriptor for dead child */
2957 LstNode jnode; /* list element for finding job */
2959 DEBUGF(JOB, ("JobFlagForMigration(%d) called.\n", hostID));
2960 jnode = Lst_Find(jobs, (void *)hostID, JobCmpRmtID);
2962 if (jnode == NULL) {
2963 jnode = Lst_Find(stoppedJobs, (void *)hostID, JobCmpRmtID);
2964 if (jnode == NULL) {
2966 Error("Evicting host(%d) not in table", hostID);
2971 job = (Job *) Lst_Datum(jnode);
2973 DEBUGF(JOB, ("JobFlagForMigration(%d) found job '%s'.\n", hostID, job->node->name));
2975 KILL(job->pid, SIGSTOP);
2977 job->flags |= JOB_REMIGRATE;
2983 *-----------------------------------------------------------------------
2985 * Tries to restart stopped jobs if there are slots available.
2986 * Note that this tries to restart them regardless of pending errors.
2987 * It's not good to leave stopped jobs lying around!
2993 * Resumes(and possibly migrates) jobs.
2995 *-----------------------------------------------------------------------
2998 JobRestartJobs(void)
3000 while (!jobFull && !Lst_IsEmpty(stoppedJobs)) {
3001 DEBUGF(JOB, ("Job queue is not full. Restarting a stopped job.\n"));
3002 JobRestart((Job *)Lst_DeQueue(stoppedJobs));