3743 lines
98 KiB
C
3743 lines
98 KiB
C
/* $NetBSD: job.c,v 1.98 2005/08/08 16:42:54 christos Exp $ */
|
||
|
||
/*
|
||
* Copyright (c) 1988, 1989, 1990 The Regents of the University of California.
|
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* All rights reserved.
|
||
*
|
||
* This code is derived from software contributed to Berkeley by
|
||
* Adam de Boor.
|
||
*
|
||
* Redistribution and use in source and binary forms, with or without
|
||
* modification, are permitted provided that the following conditions
|
||
* are met:
|
||
* 1. Redistributions of source code must retain the above copyright
|
||
* notice, this list of conditions and the following disclaimer.
|
||
* 2. Redistributions in binary form must reproduce the above copyright
|
||
* notice, this list of conditions and the following disclaimer in the
|
||
* documentation and/or other materials provided with the distribution.
|
||
* 3. Neither the name of the University nor the names of its contributors
|
||
* may be used to endorse or promote products derived from this software
|
||
* without specific prior written permission.
|
||
*
|
||
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
||
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||
* SUCH DAMAGE.
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||
*/
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/*
|
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* Copyright (c) 1988, 1989 by Adam de Boor
|
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* Copyright (c) 1989 by Berkeley Softworks
|
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* All rights reserved.
|
||
*
|
||
* This code is derived from software contributed to Berkeley by
|
||
* Adam de Boor.
|
||
*
|
||
* Redistribution and use in source and binary forms, with or without
|
||
* modification, are permitted provided that the following conditions
|
||
* are met:
|
||
* 1. Redistributions of source code must retain the above copyright
|
||
* notice, this list of conditions and the following disclaimer.
|
||
* 2. Redistributions in binary form must reproduce the above copyright
|
||
* notice, this list of conditions and the following disclaimer in the
|
||
* documentation and/or other materials provided with the distribution.
|
||
* 3. All advertising materials mentioning features or use of this software
|
||
* must display the following acknowledgement:
|
||
* This product includes software developed by the University of
|
||
* California, Berkeley and its contributors.
|
||
* 4. Neither the name of the University nor the names of its contributors
|
||
* may be used to endorse or promote products derived from this software
|
||
* without specific prior written permission.
|
||
*
|
||
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
||
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||
* SUCH DAMAGE.
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||
*/
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#ifndef MAKE_NATIVE
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||
static char rcsid[] = "$NetBSD: job.c,v 1.98 2005/08/08 16:42:54 christos Exp $";
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||
#else
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#include <sys/cdefs.h>
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||
#ifndef lint
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#if 0
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static char sccsid[] = "@(#)job.c 8.2 (Berkeley) 3/19/94";
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#else
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__RCSID("$NetBSD: job.c,v 1.98 2005/08/08 16:42:54 christos Exp $");
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||
#endif
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#endif /* not lint */
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#endif
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/*-
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* job.c --
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* handle the creation etc. of our child processes.
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*
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* Interface:
|
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* Job_Make Start the creation of the given target.
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*
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* Job_CatchChildren Check for and handle the termination of any
|
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* children. This must be called reasonably
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* frequently to keep the whole make going at
|
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* a decent clip, since job table entries aren't
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* removed until their process is caught this way.
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* Its single argument is TRUE if the function
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* should block waiting for a child to terminate.
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*
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* Job_CatchOutput Print any output our children have produced.
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* Should also be called fairly frequently to
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* keep the user informed of what's going on.
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* If no output is waiting, it will block for
|
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* a time given by the SEL_* constants, below,
|
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* or until output is ready.
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*
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* Job_Init Called to intialize this module. in addition,
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* any commands attached to the .BEGIN target
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* are executed before this function returns.
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||
* Hence, the makefile must have been parsed
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* before this function is called.
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||
*
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* Job_End Cleanup any memory used.
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*
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* Job_Empty Return TRUE if the job table is completely
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* empty.
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*
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* Job_ParseShell Given the line following a .SHELL target, parse
|
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* the line as a shell specification. Returns
|
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* FAILURE if the spec was incorrect.
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*
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||
* Job_Finish Perform any final processing which needs doing.
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* This includes the execution of any commands
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* which have been/were attached to the .END
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||
* target. It should only be called when the
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* job table is empty.
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||
*
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||
* Job_AbortAll Abort all currently running jobs. It doesn't
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* handle output or do anything for the jobs,
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||
* just kills them. It should only be called in
|
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* an emergency, as it were.
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*
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* Job_CheckCommands Verify that the commands for a target are
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* ok. Provide them if necessary and possible.
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*
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* Job_Touch Update a target without really updating it.
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||
*
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||
* Job_Wait Wait for all currently-running jobs to finish.
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*/
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <sys/file.h>
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#include <sys/time.h>
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#include <sys/wait.h>
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#include <errno.h>
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#include <fcntl.h>
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#ifndef RMT_WILL_WATCH
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#ifndef USE_SELECT
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#include <poll.h>
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#endif
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#endif
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#include <signal.h>
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#include <stdio.h>
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#include <string.h>
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#include <utime.h>
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#include "make.h"
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#include "hash.h"
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#include "dir.h"
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#include "job.h"
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||
#include "pathnames.h"
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#include "trace.h"
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||
#ifdef REMOTE
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#include "rmt.h"
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# define STATIC
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#else
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# define STATIC static
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#endif
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/*
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* error handling variables
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||
*/
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static int errors = 0; /* number of errors reported */
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static int aborting = 0; /* why is the make aborting? */
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#define ABORT_ERROR 1 /* Because of an error */
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#define ABORT_INTERRUPT 2 /* Because it was interrupted */
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#define ABORT_WAIT 3 /* Waiting for jobs to finish */
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/*
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* XXX: Avoid SunOS bug... FILENO() is fp->_file, and file
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||
* is a char! So when we go above 127 we turn negative!
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||
*/
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#define FILENO(a) ((unsigned) fileno(a))
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||
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/*
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||
* post-make command processing. The node postCommands is really just the
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* .END target but we keep it around to avoid having to search for it
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* all the time.
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*/
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static GNode *postCommands = NILGNODE;
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/* node containing commands to execute when
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* everything else is done */
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static int numCommands; /* The number of commands actually printed
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* for a target. Should this number be
|
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* 0, no shell will be executed. */
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||
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/*
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* Return values from JobStart.
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||
*/
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#define JOB_RUNNING 0 /* Job is running */
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#define JOB_ERROR 1 /* Error in starting the job */
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#define JOB_FINISHED 2 /* The job is already finished */
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#define JOB_STOPPED 3 /* The job is stopped */
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/*
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||
* Descriptions for various shells.
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*/
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static Shell shells[] = {
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||
/*
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||
* CSH description. The csh can do echo control by playing
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||
* with the setting of the 'echo' shell variable. Sadly,
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* however, it is unable to do error control nicely.
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*/
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{
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"csh",
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TRUE, "unset verbose", "set verbose", "unset verbose", 10,
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FALSE, "echo \"%s\"\n", "csh -c \"%s || exit 0\"\n", "", '#',
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"v", "e",
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},
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/*
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* SH description. Echo control is also possible and, under
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* sun UNIX anyway, one can even control error checking.
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*/
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{
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"sh",
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FALSE, "", "", "", 0,
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FALSE, "echo \"%s\"\n", "%s\n", "{ %s \n} || exit $?\n", '#',
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#ifdef __NetBSD__
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"q",
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||
#else
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"",
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||
#endif
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"",
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||
},
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||
/*
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||
* KSH description.
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||
*/
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||
{
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"ksh",
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TRUE, "set +v", "set -v", "set +v", 6,
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FALSE, "echo \"%s\"\n", "%s\n", "{ %s \n} || exit $?\n", '#',
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"v",
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"",
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},
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/*
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* UNKNOWN.
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||
*/
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{
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NULL,
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FALSE, NULL, NULL, NULL, 0,
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FALSE, NULL, NULL, NULL, 0,
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||
NULL, NULL,
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||
}
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||
};
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static Shell *commandShell = &shells[DEFSHELL];/* this is the shell to
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* which we pass all
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* commands in the Makefile.
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* It is set by the
|
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* Job_ParseShell function */
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const char *shellPath = NULL, /* full pathname of
|
||
* executable image */
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*shellName = NULL; /* last component of shell */
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static const char *shellArgv = NULL; /* Custom shell args */
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static int maxJobs; /* The most children we can run at once */
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static int maxLocal; /* The most local ones we can have */
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||
STATIC int nJobs; /* The number of children currently running */
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STATIC int nLocal; /* The number of local children */
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||
STATIC Lst jobs; /* The structures that describe them */
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||
static Boolean wantToken; /* we want a token */
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||
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/*
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* Set of descriptors of pipes connected to
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* the output channels of children
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||
*/
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#ifndef RMT_WILL_WATCH
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static struct pollfd *fds = NULL;
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static Job **jobfds = NULL;
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static int nfds = 0;
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static int maxfds = 0;
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||
static void watchfd(Job *);
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||
static void clearfd(Job *);
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||
static int readyfd(Job *);
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#define JBSTART 256
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||
#define JBFACTOR 2
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||
#endif
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STATIC GNode *lastNode; /* The node for which output was most recently
|
||
* produced. */
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STATIC const char *targFmt; /* Format string to use to head output from a
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* job when it's not the most-recent job heard
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* from */
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static Job tokenWaitJob; /* token wait pseudo-job */
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int job_pipe[2] = { -1, -1 }; /* job server pipes. */
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static Job childExitJob; /* child exit pseudo-job */
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int exit_pipe[2] = { -1, -1 }; /* child exit signal pipe. */
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||
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||
#ifdef REMOTE
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||
# define TARG_FMT "--- %s at %s ---\n" /* Default format */
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# define MESSAGE(fp, gn) \
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(void)fprintf(fp, targFmt, gn->name, gn->rem.hname)
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#else
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# define TARG_FMT "--- %s ---\n" /* Default format */
|
||
# define MESSAGE(fp, gn) \
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(void)fprintf(fp, targFmt, gn->name)
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#endif
|
||
|
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/*
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* When JobStart attempts to run a job remotely but can't, and isn't allowed
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||
* to run the job locally, or when Job_CatchChildren detects a job that has
|
||
* been migrated home, the job is placed on the stoppedJobs queue to be run
|
||
* when the next job finishes.
|
||
*/
|
||
STATIC Lst stoppedJobs; /* Lst of Job structures describing
|
||
* jobs that were stopped due to concurrency
|
||
* limits or migration home */
|
||
|
||
|
||
sigset_t caught_signals; /* Set of signals we handle */
|
||
#if defined(USE_PGRP) && defined(SYSV)
|
||
# define KILL(pid, sig) kill(-(pid), (sig))
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||
#else
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# if defined(USE_PGRP)
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||
# define KILL(pid, sig) killpg((pid), (sig))
|
||
# else
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||
# define KILL(pid, sig) kill((pid), (sig))
|
||
# endif
|
||
#endif
|
||
|
||
/*
|
||
* Grmpf... There is no way to set bits of the wait structure
|
||
* anymore with the stupid W*() macros. I liked the union wait
|
||
* stuff much more. So, we devise our own macros... This is
|
||
* really ugly, use dramamine sparingly. You have been warned.
|
||
*/
|
||
#ifndef W_STOPCODE
|
||
#define W_STOPCODE(sig) (((sig) << 8) | 0177)
|
||
#endif
|
||
#ifndef W_EXITCODE
|
||
#define W_EXITCODE(ret, sig) ((ret << 8) | (sig))
|
||
#endif
|
||
|
||
static int JobCondPassSig(ClientData, ClientData);
|
||
static void JobPassSig(int);
|
||
static void JobChildSig(int);
|
||
#ifdef USE_PGRP
|
||
static void JobContinueSig(int);
|
||
#endif
|
||
static int JobCmpPid(ClientData, ClientData);
|
||
static int JobPrintCommand(ClientData, ClientData);
|
||
static int JobSaveCommand(ClientData, ClientData);
|
||
static void JobClose(Job *);
|
||
#ifdef REMOTE
|
||
static int JobCmpRmtID(ClientData, ClientData);
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||
# ifdef RMT_WILL_WATCH
|
||
static void JobLocalInput(int, Job *);
|
||
# endif
|
||
#else
|
||
static void JobFinish(Job *, int *);
|
||
static void JobExec(Job *, char **);
|
||
#endif
|
||
static void JobMakeArgv(Job *, char **);
|
||
static int JobRestart(Job *);
|
||
static int JobStart(GNode *, int, Job *);
|
||
static char *JobOutput(Job *, char *, char *, int);
|
||
static void JobDoOutput(Job *, Boolean);
|
||
static Shell *JobMatchShell(const char *);
|
||
static void JobInterrupt(int, int);
|
||
static void JobRestartJobs(void);
|
||
static void JobTokenAdd(void);
|
||
static void JobSigLock(sigset_t *);
|
||
static void JobSigUnlock(sigset_t *);
|
||
static void JobSigReset(void);
|
||
|
||
|
||
|
||
/*
|
||
* JobSigLock/JobSigUnlock
|
||
*
|
||
* Signal lock routines to get exclusive access. Currently used to
|
||
* protect `jobs' and `stoppedJobs' list manipulations.
|
||
*/
|
||
static void JobSigLock(sigset_t *omaskp)
|
||
{
|
||
if (sigprocmask(SIG_BLOCK, &caught_signals, omaskp) != 0) {
|
||
Punt("JobSigLock: sigprocmask: %s", strerror(errno));
|
||
sigemptyset(omaskp);
|
||
}
|
||
}
|
||
|
||
static void JobSigUnlock(sigset_t *omaskp)
|
||
{
|
||
(void)sigprocmask(SIG_SETMASK, omaskp, NULL);
|
||
}
|
||
|
||
/*-
|
||
*-----------------------------------------------------------------------
|
||
* JobCondPassSig --
|
||
* Pass a signal to a job if the job is remote or if USE_PGRP
|
||
* is defined.
|
||
*
|
||
* Input:
|
||
* jobp Job to biff
|
||
* signop Signal to send it
|
||
*
|
||
* Results:
|
||
* === 0
|
||
*
|
||
* Side Effects:
|
||
* None, except the job may bite it.
|
||
*
|
||
*-----------------------------------------------------------------------
|
||
*/
|
||
static int
|
||
JobCondPassSig(ClientData jobp, ClientData signop)
|
||
{
|
||
Job *job = (Job *)jobp;
|
||
int signo = *(int *)signop;
|
||
#ifdef RMT_WANTS_SIGNALS
|
||
if (job->flags & JOB_REMOTE) {
|
||
(void)Rmt_Signal(job, signo);
|
||
} else {
|
||
KILL(job->pid, signo);
|
||
}
|
||
#else
|
||
/*
|
||
* Assume that sending the signal to job->pid will signal any remote
|
||
* job as well.
|
||
*/
|
||
if (DEBUG(JOB)) {
|
||
(void)fprintf(stdout,
|
||
"JobCondPassSig passing signal %d to child %d.\n",
|
||
signo, job->pid);
|
||
(void)fflush(stdout);
|
||
}
|
||
KILL(job->pid, signo);
|
||
#endif
|
||
return 0;
|
||
}
|
||
|
||
/*-
|
||
*-----------------------------------------------------------------------
|
||
* JobChldSig --
|
||
* SIGCHLD handler.
|
||
*
|
||
* Input:
|
||
* signo The signal number we've received
|
||
*
|
||
* Results:
|
||
* None.
|
||
*
|
||
* Side Effects:
|
||
* Sends a token on the child exit pipe to wake us up from
|
||
* select()/poll().
|
||
*
|
||
*-----------------------------------------------------------------------
|
||
*/
|
||
static void
|
||
JobChildSig(int signo __unused)
|
||
{
|
||
write(exit_pipe[1], ".", 1);
|
||
}
|
||
|
||
|
||
#ifdef USE_PGRP
|
||
/*-
|
||
*-----------------------------------------------------------------------
|
||
* JobContinueSig --
|
||
* Resume all stopped jobs.
|
||
*
|
||
* Input:
|
||
* signo The signal number we've received
|
||
*
|
||
* Results:
|
||
* None.
|
||
*
|
||
* Side Effects:
|
||
* Jobs start running again.
|
||
*
|
||
*-----------------------------------------------------------------------
|
||
*/
|
||
static void
|
||
JobContinueSig(int signo __unused)
|
||
{
|
||
JobRestartJobs();
|
||
}
|
||
#endif
|
||
|
||
/*-
|
||
*-----------------------------------------------------------------------
|
||
* JobPassSig --
|
||
* Pass a signal on to all remote jobs and to all local jobs if
|
||
* USE_PGRP is defined, then die ourselves.
|
||
*
|
||
* Input:
|
||
* signo The signal number we've received
|
||
*
|
||
* Results:
|
||
* None.
|
||
*
|
||
* Side Effects:
|
||
* We die by the same signal.
|
||
*
|
||
*-----------------------------------------------------------------------
|
||
*/
|
||
static void
|
||
JobPassSig(int signo)
|
||
{
|
||
sigset_t nmask, omask;
|
||
struct sigaction act;
|
||
int sigcont;
|
||
|
||
if (DEBUG(JOB)) {
|
||
(void)fprintf(stdout, "JobPassSig(%d) called.\n", signo);
|
||
(void)fflush(stdout);
|
||
}
|
||
Lst_ForEach(jobs, JobCondPassSig, (ClientData) &signo);
|
||
|
||
/*
|
||
* Deal with proper cleanup based on the signal received. We only run
|
||
* the .INTERRUPT target if the signal was in fact an interrupt. The other
|
||
* three termination signals are more of a "get out *now*" command.
|
||
*/
|
||
if (signo == SIGINT) {
|
||
JobInterrupt(TRUE, signo);
|
||
} else if ((signo == SIGHUP) || (signo == SIGTERM) || (signo == SIGQUIT)) {
|
||
JobInterrupt(FALSE, signo);
|
||
}
|
||
|
||
/*
|
||
* Leave gracefully if SIGQUIT, rather than core dumping.
|
||
*/
|
||
if (signo == SIGQUIT) {
|
||
Finish(0);
|
||
}
|
||
|
||
if (signo == SIGTSTP) {
|
||
Job_CatchChildren(FALSE);
|
||
}
|
||
/*
|
||
* Send ourselves the signal now we've given the message to everyone else.
|
||
* Note we block everything else possible while we're getting the signal.
|
||
* This ensures that all our jobs get continued when we wake up before
|
||
* we take any other signal.
|
||
*/
|
||
sigfillset(&nmask);
|
||
sigdelset(&nmask, signo);
|
||
(void)sigprocmask(SIG_SETMASK, &nmask, &omask);
|
||
|
||
act.sa_handler = SIG_DFL;
|
||
sigemptyset(&act.sa_mask);
|
||
act.sa_flags = 0;
|
||
(void)sigaction(signo, &act, NULL);
|
||
|
||
if (DEBUG(JOB)) {
|
||
(void)fprintf(stdout,
|
||
"JobPassSig passing signal %d to self.\n", signo);
|
||
(void)fflush(stdout);
|
||
}
|
||
|
||
(void)kill(getpid(), signo);
|
||
if (signo != SIGTSTP) {
|
||
sigcont = SIGCONT;
|
||
Lst_ForEach(jobs, JobCondPassSig, (ClientData) &sigcont);
|
||
}
|
||
|
||
/* Restore handler and signal mask */
|
||
act.sa_handler = JobPassSig;
|
||
(void)sigaction(signo, &act, NULL);
|
||
(void)sigprocmask(SIG_SETMASK, &omask, NULL);
|
||
}
|
||
|
||
/*-
|
||
*-----------------------------------------------------------------------
|
||
* JobCmpPid --
|
||
* Compare the pid of the job with the given pid and return 0 if they
|
||
* are equal. This function is called from Job_CatchChildren via
|
||
* Lst_Find to find the job descriptor of the finished job.
|
||
*
|
||
* Input:
|
||
* job job to examine
|
||
* pid process id desired
|
||
*
|
||
* Results:
|
||
* 0 if the pid's match
|
||
*
|
||
* Side Effects:
|
||
* None
|
||
*-----------------------------------------------------------------------
|
||
*/
|
||
static int
|
||
JobCmpPid(ClientData job, ClientData pid)
|
||
{
|
||
return *(int *)pid - ((Job *)job)->pid;
|
||
}
|
||
|
||
#ifdef REMOTE
|
||
/*-
|
||
*-----------------------------------------------------------------------
|
||
* JobCmpRmtID --
|
||
* Compare the rmtID of the job with the given rmtID and return 0 if they
|
||
* are equal.
|
||
*
|
||
* Input:
|
||
* job job to examine
|
||
* rmtID remote id desired
|
||
*
|
||
* Results:
|
||
* 0 if the rmtID's match
|
||
*
|
||
* Side Effects:
|
||
* None.
|
||
*-----------------------------------------------------------------------
|
||
*/
|
||
static int
|
||
JobCmpRmtID(ClientData job, ClientData rmtID)
|
||
{
|
||
return(*(int *)rmtID - ((Job *)job)->rmtID);
|
||
}
|
||
#endif
|
||
|
||
/*-
|
||
*-----------------------------------------------------------------------
|
||
* JobPrintCommand --
|
||
* Put out another command for the given job. If the command starts
|
||
* with an @ or a - we process it specially. In the former case,
|
||
* so long as the -s and -n flags weren't given to make, we stick
|
||
* a shell-specific echoOff command in the script. In the latter,
|
||
* we ignore errors for the entire job, unless the shell has error
|
||
* control.
|
||
* If the command is just "..." we take all future commands for this
|
||
* job to be commands to be executed once the entire graph has been
|
||
* made and return non-zero to signal that the end of the commands
|
||
* was reached. These commands are later attached to the postCommands
|
||
* node and executed by Job_End when all things are done.
|
||
* This function is called from JobStart via Lst_ForEach.
|
||
*
|
||
* Input:
|
||
* cmdp command string to print
|
||
* jobp job for which to print it
|
||
*
|
||
* Results:
|
||
* Always 0, unless the command was "..."
|
||
*
|
||
* Side Effects:
|
||
* If the command begins with a '-' and the shell has no error control,
|
||
* the JOB_IGNERR flag is set in the job descriptor.
|
||
* If the command is "..." and we're not ignoring such things,
|
||
* tailCmds is set to the successor node of the cmd.
|
||
* numCommands is incremented if the command is actually printed.
|
||
*-----------------------------------------------------------------------
|
||
*/
|
||
static int
|
||
JobPrintCommand(ClientData cmdp, ClientData jobp)
|
||
{
|
||
Boolean noSpecials; /* true if we shouldn't worry about
|
||
* inserting special commands into
|
||
* the input stream. */
|
||
Boolean shutUp = FALSE; /* true if we put a no echo command
|
||
* into the command file */
|
||
Boolean errOff = FALSE; /* true if we turned error checking
|
||
* off before printing the command
|
||
* and need to turn it back on */
|
||
const char *cmdTemplate; /* Template to use when printing the
|
||
* command */
|
||
char *cmdStart; /* Start of expanded command */
|
||
char *escCmd = NULL; /* Command with quotes/backticks escaped */
|
||
char *cmd = (char *)cmdp;
|
||
Job *job = (Job *)jobp;
|
||
char *cp, *tmp;
|
||
int i, j;
|
||
|
||
noSpecials = NoExecute(job->node);
|
||
|
||
if (strcmp(cmd, "...") == 0) {
|
||
job->node->type |= OP_SAVE_CMDS;
|
||
if ((job->flags & JOB_IGNDOTS) == 0) {
|
||
job->tailCmds = Lst_Succ(Lst_Member(job->node->commands,
|
||
(ClientData)cmd));
|
||
return 1;
|
||
}
|
||
return 0;
|
||
}
|
||
|
||
#define DBPRINTF(fmt, arg) if (DEBUG(JOB)) { \
|
||
(void)fprintf(stdout, fmt, arg); \
|
||
(void)fflush(stdout); \
|
||
} \
|
||
(void)fprintf(job->cmdFILE, fmt, arg); \
|
||
(void)fflush(job->cmdFILE);
|
||
|
||
numCommands += 1;
|
||
|
||
cmdStart = cmd = Var_Subst(NULL, cmd, job->node, FALSE);
|
||
|
||
cmdTemplate = "%s\n";
|
||
|
||
/*
|
||
* Check for leading @' and -'s to control echoing and error checking.
|
||
*/
|
||
while (*cmd == '@' || *cmd == '-' || (*cmd == '+')) {
|
||
switch (*cmd) {
|
||
case '@':
|
||
shutUp = TRUE;
|
||
break;
|
||
case '-':
|
||
errOff = TRUE;
|
||
break;
|
||
case '+':
|
||
if (noSpecials) {
|
||
/*
|
||
* We're not actually executing anything...
|
||
* but this one needs to be - use compat mode just for it.
|
||
*/
|
||
CompatRunCommand(cmdp, (ClientData)job->node);
|
||
return 0;
|
||
}
|
||
break;
|
||
}
|
||
cmd++;
|
||
}
|
||
|
||
while (isspace((unsigned char) *cmd))
|
||
cmd++;
|
||
|
||
/*
|
||
* If the shell doesn't have error control the alternate echo'ing will
|
||
* be done (to avoid showing additional error checking code)
|
||
* and this will need the characters '$ ` \ "' escaped
|
||
*/
|
||
|
||
if (!commandShell->hasErrCtl) {
|
||
/* Worst that could happen is every char needs escaping. */
|
||
escCmd = emalloc((strlen(cmd) * 2) + 1);
|
||
for (i = 0, j= 0; cmd[i] != '\0'; i++, j++) {
|
||
if (cmd[i] == '$' || cmd[i] == '`' || cmd[i] == '\\' ||
|
||
cmd[i] == '"')
|
||
escCmd[j++] = '\\';
|
||
escCmd[j] = cmd[i];
|
||
}
|
||
escCmd[j] = 0;
|
||
}
|
||
|
||
if (shutUp) {
|
||
if (!(job->flags & JOB_SILENT) && !noSpecials &&
|
||
commandShell->hasEchoCtl) {
|
||
DBPRINTF("%s\n", commandShell->echoOff);
|
||
} else {
|
||
if (commandShell->hasErrCtl)
|
||
shutUp = FALSE;
|
||
}
|
||
}
|
||
|
||
if (errOff) {
|
||
if ( !(job->flags & JOB_IGNERR) && !noSpecials) {
|
||
if (commandShell->hasErrCtl) {
|
||
/*
|
||
* we don't want the error-control commands showing
|
||
* up either, so we turn off echoing while executing
|
||
* them. We could put another field in the shell
|
||
* structure to tell JobDoOutput to look for this
|
||
* string too, but why make it any more complex than
|
||
* it already is?
|
||
*/
|
||
if (!(job->flags & JOB_SILENT) && !shutUp &&
|
||
commandShell->hasEchoCtl) {
|
||
DBPRINTF("%s\n", commandShell->echoOff);
|
||
DBPRINTF("%s\n", commandShell->ignErr);
|
||
DBPRINTF("%s\n", commandShell->echoOn);
|
||
} else {
|
||
DBPRINTF("%s\n", commandShell->ignErr);
|
||
}
|
||
} else if (commandShell->ignErr &&
|
||
(*commandShell->ignErr != '\0'))
|
||
{
|
||
/*
|
||
* The shell has no error control, so we need to be
|
||
* weird to get it to ignore any errors from the command.
|
||
* If echoing is turned on, we turn it off and use the
|
||
* errCheck template to echo the command. Leave echoing
|
||
* off so the user doesn't see the weirdness we go through
|
||
* to ignore errors. Set cmdTemplate to use the weirdness
|
||
* instead of the simple "%s\n" template.
|
||
*/
|
||
if (!(job->flags & JOB_SILENT) && !shutUp) {
|
||
if (commandShell->hasEchoCtl) {
|
||
DBPRINTF("%s\n", commandShell->echoOff);
|
||
}
|
||
DBPRINTF(commandShell->errCheck, escCmd);
|
||
shutUp = TRUE;
|
||
} else {
|
||
if (!shutUp) {
|
||
DBPRINTF(commandShell->errCheck, escCmd);
|
||
}
|
||
}
|
||
cmdTemplate = commandShell->ignErr;
|
||
/*
|
||
* The error ignoration (hee hee) is already taken care
|
||
* of by the ignErr template, so pretend error checking
|
||
* is still on.
|
||
*/
|
||
errOff = FALSE;
|
||
} else {
|
||
errOff = FALSE;
|
||
}
|
||
} else {
|
||
errOff = FALSE;
|
||
}
|
||
} else {
|
||
|
||
/*
|
||
* If errors are being checked and the shell doesn't have error control
|
||
* but does supply an errOut template, then setup commands to run
|
||
* through it.
|
||
*/
|
||
|
||
if (!commandShell->hasErrCtl && commandShell->errOut &&
|
||
(*commandShell->errOut != '\0')) {
|
||
if (!(job->flags & JOB_SILENT) && !shutUp) {
|
||
if (commandShell->hasEchoCtl) {
|
||
DBPRINTF("%s\n", commandShell->echoOff);
|
||
}
|
||
DBPRINTF(commandShell->errCheck, escCmd);
|
||
shutUp = TRUE;
|
||
}
|
||
/* If it's a comment line or blank, treat as an ignored error */
|
||
if ((escCmd[0] == commandShell->commentChar) ||
|
||
(escCmd[0] == 0))
|
||
cmdTemplate = commandShell->ignErr;
|
||
else
|
||
cmdTemplate = commandShell->errOut;
|
||
errOff = FALSE;
|
||
}
|
||
}
|
||
|
||
if (DEBUG(SHELL) && strcmp(shellName, "sh") == 0 &&
|
||
(job->flags & JOB_TRACED) == 0) {
|
||
DBPRINTF("set -%s\n", "x");
|
||
job->flags |= JOB_TRACED;
|
||
}
|
||
|
||
if ((cp = Check_Cwd_Cmd(cmd)) != NULL) {
|
||
DBPRINTF("test -d %s && ", cp);
|
||
DBPRINTF("cd %s\n", cp);
|
||
}
|
||
|
||
DBPRINTF(cmdTemplate, cmd);
|
||
free(cmdStart);
|
||
if (escCmd)
|
||
free(escCmd);
|
||
if (errOff) {
|
||
/*
|
||
* If echoing is already off, there's no point in issuing the
|
||
* echoOff command. Otherwise we issue it and pretend it was on
|
||
* for the whole command...
|
||
*/
|
||
if (!shutUp && !(job->flags & JOB_SILENT) && commandShell->hasEchoCtl){
|
||
DBPRINTF("%s\n", commandShell->echoOff);
|
||
shutUp = TRUE;
|
||
}
|
||
DBPRINTF("%s\n", commandShell->errCheck);
|
||
}
|
||
if (shutUp && commandShell->hasEchoCtl) {
|
||
DBPRINTF("%s\n", commandShell->echoOn);
|
||
}
|
||
if (cp != NULL) {
|
||
DBPRINTF("test -d %s && ", cp);
|
||
DBPRINTF("cd %s\n", Var_Value(".OBJDIR", VAR_GLOBAL, &tmp));
|
||
}
|
||
return 0;
|
||
}
|
||
|
||
/*-
|
||
*-----------------------------------------------------------------------
|
||
* JobSaveCommand --
|
||
* Save a command to be executed when everything else is done.
|
||
* Callback function for JobFinish...
|
||
*
|
||
* Results:
|
||
* Always returns 0
|
||
*
|
||
* Side Effects:
|
||
* The command is tacked onto the end of postCommands's commands list.
|
||
*
|
||
*-----------------------------------------------------------------------
|
||
*/
|
||
static int
|
||
JobSaveCommand(ClientData cmd, ClientData gn)
|
||
{
|
||
cmd = (ClientData)Var_Subst(NULL, (char *)cmd, (GNode *)gn, FALSE);
|
||
(void)Lst_AtEnd(postCommands->commands, cmd);
|
||
return(0);
|
||
}
|
||
|
||
|
||
/*-
|
||
*-----------------------------------------------------------------------
|
||
* JobClose --
|
||
* Called to close both input and output pipes when a job is finished.
|
||
*
|
||
* Results:
|
||
* Nada
|
||
*
|
||
* Side Effects:
|
||
* The file descriptors associated with the job are closed.
|
||
*
|
||
*-----------------------------------------------------------------------
|
||
*/
|
||
static void
|
||
JobClose(Job *job)
|
||
{
|
||
if (usePipes && (job->flags & JOB_FIRST)) {
|
||
#ifdef RMT_WILL_WATCH
|
||
Rmt_Ignore(job->inPipe);
|
||
#else
|
||
clearfd(job);
|
||
#endif
|
||
if (job->outPipe != job->inPipe) {
|
||
(void)close(job->outPipe);
|
||
}
|
||
JobDoOutput(job, TRUE);
|
||
(void)close(job->inPipe);
|
||
} else {
|
||
(void)close(job->outFd);
|
||
JobDoOutput(job, TRUE);
|
||
}
|
||
}
|
||
|
||
/*-
|
||
*-----------------------------------------------------------------------
|
||
* JobFinish --
|
||
* Do final processing for the given job including updating
|
||
* parents and starting new jobs as available/necessary. Note
|
||
* that we pay no attention to the JOB_IGNERR flag here.
|
||
* This is because when we're called because of a noexecute flag
|
||
* or something, jstat.w_status is 0 and when called from
|
||
* Job_CatchChildren, the status is zeroed if it s/b ignored.
|
||
*
|
||
* Input:
|
||
* job job to finish
|
||
* status sub-why job went away
|
||
*
|
||
* Results:
|
||
* None
|
||
*
|
||
* Side Effects:
|
||
* Final commands for the job are placed on postCommands.
|
||
*
|
||
* If we got an error and are aborting (aborting == ABORT_ERROR) and
|
||
* the job list is now empty, we are done for the day.
|
||
* If we recognized an error (errors !=0), we set the aborting flag
|
||
* to ABORT_ERROR so no more jobs will be started.
|
||
*-----------------------------------------------------------------------
|
||
*/
|
||
/*ARGSUSED*/
|
||
static void
|
||
JobFinish(Job *job, int *status)
|
||
{
|
||
Boolean done;
|
||
|
||
if ((WIFEXITED(*status) &&
|
||
(((WEXITSTATUS(*status) != 0) && !(job->flags & JOB_IGNERR)))) ||
|
||
WIFSIGNALED(*status))
|
||
{
|
||
/*
|
||
* If it exited non-zero and either we're doing things our
|
||
* way or we're not ignoring errors, the job is finished.
|
||
* Similarly, if the shell died because of a signal
|
||
* the job is also finished. In these
|
||
* cases, finish out the job's output before printing the exit
|
||
* status...
|
||
*/
|
||
#ifdef REMOTE
|
||
KILL(job->pid, SIGCONT);
|
||
#endif
|
||
JobClose(job);
|
||
if (job->cmdFILE != NULL && job->cmdFILE != stdout) {
|
||
(void)fclose(job->cmdFILE);
|
||
job->cmdFILE = NULL;
|
||
}
|
||
done = TRUE;
|
||
#ifdef REMOTE
|
||
if (job->flags & JOB_REMOTE)
|
||
Rmt_Done(job->rmtID, job->node);
|
||
#endif
|
||
} else if (WIFEXITED(*status)) {
|
||
/*
|
||
* Deal with ignored errors in -B mode. We need to print a message
|
||
* telling of the ignored error as well as setting status.w_status
|
||
* to 0 so the next command gets run. To do this, we set done to be
|
||
* TRUE if in -B mode and the job exited non-zero.
|
||
*/
|
||
done = WEXITSTATUS(*status) != 0;
|
||
/*
|
||
* Old comment said: "Note we don't
|
||
* want to close down any of the streams until we know we're at the
|
||
* end."
|
||
* But we do. Otherwise when are we going to print the rest of the
|
||
* stuff?
|
||
*/
|
||
JobClose(job);
|
||
#ifdef REMOTE
|
||
if (job->flags & JOB_REMOTE)
|
||
Rmt_Done(job->rmtID, job->node);
|
||
#endif /* REMOTE */
|
||
} else {
|
||
/*
|
||
* No need to close things down or anything.
|
||
*/
|
||
done = FALSE;
|
||
}
|
||
|
||
if (done ||
|
||
WIFSTOPPED(*status) ||
|
||
(WIFSIGNALED(*status) && (WTERMSIG(*status) == SIGCONT)))
|
||
{
|
||
FILE *out;
|
||
|
||
if (compatMake && !usePipes && (job->flags & JOB_IGNERR)) {
|
||
/*
|
||
* If output is going to a file and this job is ignoring
|
||
* errors, arrange to have the exit status sent to the
|
||
* output file as well.
|
||
*/
|
||
out = fdopen(job->outFd, "w");
|
||
if (out == NULL)
|
||
Punt("Cannot fdopen");
|
||
} else {
|
||
out = stdout;
|
||
}
|
||
|
||
if (WIFEXITED(*status)) {
|
||
if (DEBUG(JOB)) {
|
||
(void)fprintf(stdout, "Process %d [%s] exited.\n",
|
||
job->pid, job->node->name);
|
||
(void)fflush(stdout);
|
||
}
|
||
if (WEXITSTATUS(*status) != 0) {
|
||
if (usePipes && job->node != lastNode) {
|
||
MESSAGE(out, job->node);
|
||
lastNode = job->node;
|
||
}
|
||
(void)fprintf(out, "*** [%s] Error code %d%s\n",
|
||
job->node->name,
|
||
WEXITSTATUS(*status),
|
||
(job->flags & JOB_IGNERR) ? "(ignored)" : "");
|
||
|
||
if (job->flags & JOB_IGNERR) {
|
||
*status = 0;
|
||
}
|
||
} else if (DEBUG(JOB)) {
|
||
if (usePipes && job->node != lastNode) {
|
||
MESSAGE(out, job->node);
|
||
lastNode = job->node;
|
||
}
|
||
(void)fprintf(out, "*** [%s] Completed successfully\n",
|
||
job->node->name);
|
||
}
|
||
} else if (WIFSTOPPED(*status) && WSTOPSIG(*status) != SIGCONT) {
|
||
if (DEBUG(JOB)) {
|
||
(void)fprintf(stdout, "Process %d (%s) stopped.\n",
|
||
job->pid, job->node->name);
|
||
(void)fflush(stdout);
|
||
}
|
||
if (usePipes && job->node != lastNode) {
|
||
MESSAGE(out, job->node);
|
||
lastNode = job->node;
|
||
}
|
||
if (!(job->flags & JOB_REMIGRATE)) {
|
||
switch (WSTOPSIG(*status)) {
|
||
case SIGTSTP:
|
||
(void)fprintf(out, "*** [%s] Suspended\n",
|
||
job->node->name);
|
||
break;
|
||
case SIGSTOP:
|
||
(void)fprintf(out, "*** [%s] Stopped\n",
|
||
job->node->name);
|
||
break;
|
||
default:
|
||
(void)fprintf(out, "*** [%s] Stopped -- signal %d\n",
|
||
job->node->name, WSTOPSIG(*status));
|
||
}
|
||
}
|
||
job->flags |= JOB_RESUME;
|
||
(void)Lst_AtEnd(stoppedJobs, (ClientData)job);
|
||
#ifdef REMOTE
|
||
if (job->flags & JOB_REMIGRATE)
|
||
JobRestart(job);
|
||
#endif
|
||
(void)fflush(out);
|
||
return;
|
||
} else if (WIFSTOPPED(*status) && WSTOPSIG(*status) == SIGCONT) {
|
||
/*
|
||
* If the beastie has continued, shift the Job from the stopped
|
||
* list to the running one (or re-stop it if concurrency is
|
||
* exceeded) and go and get another child.
|
||
*/
|
||
if (job->flags & (JOB_RESUME|JOB_REMIGRATE|JOB_RESTART)) {
|
||
if (usePipes && job->node != lastNode) {
|
||
MESSAGE(out, job->node);
|
||
lastNode = job->node;
|
||
}
|
||
(void)fprintf(out, "*** [%s] Continued\n", job->node->name);
|
||
}
|
||
if (!(job->flags & JOB_CONTINUING)) {
|
||
if (DEBUG(JOB)) {
|
||
(void)fprintf(stdout,
|
||
"Warning: process %d [%s] was not continuing.\n",
|
||
job->pid, job->node->name);
|
||
(void)fflush(stdout);
|
||
}
|
||
#ifdef notdef
|
||
/*
|
||
* We don't really want to restart a job from scratch just
|
||
* because it continued, especially not without killing the
|
||
* continuing process! That's why this is ifdef'ed out.
|
||
* FD - 9/17/90
|
||
*/
|
||
JobRestart(job);
|
||
#endif
|
||
}
|
||
job->flags &= ~JOB_CONTINUING;
|
||
Lst_AtEnd(jobs, (ClientData)job);
|
||
nJobs += 1;
|
||
if (!(job->flags & JOB_REMOTE)) {
|
||
if (DEBUG(JOB)) {
|
||
(void)fprintf(stdout,
|
||
"Process %d is continuing locally.\n",
|
||
job->pid);
|
||
(void)fflush(stdout);
|
||
}
|
||
nLocal += 1;
|
||
}
|
||
(void)fflush(out);
|
||
return;
|
||
} else {
|
||
if (usePipes && job->node != lastNode) {
|
||
MESSAGE(out, job->node);
|
||
lastNode = job->node;
|
||
}
|
||
(void)fprintf(out, "*** [%s] Signal %d\n",
|
||
job->node->name, WTERMSIG(*status));
|
||
}
|
||
|
||
(void)fflush(out);
|
||
}
|
||
|
||
/*
|
||
* Now handle the -B-mode stuff. If the beast still isn't finished,
|
||
* try and restart the job on the next command. If JobStart says it's
|
||
* ok, it's ok. If there's an error, this puppy is done.
|
||
*/
|
||
if (compatMake && (WIFEXITED(*status) &&
|
||
!Lst_IsAtEnd(job->node->commands))) {
|
||
switch (JobStart(job->node, job->flags & JOB_IGNDOTS, job)) {
|
||
case JOB_RUNNING:
|
||
done = FALSE;
|
||
break;
|
||
case JOB_ERROR:
|
||
done = TRUE;
|
||
*status = W_EXITCODE(1, 0);
|
||
break;
|
||
case JOB_FINISHED:
|
||
/*
|
||
* If we got back a JOB_FINISHED code, JobStart has already
|
||
* called Make_Update and freed the job descriptor. We set
|
||
* done to false here to avoid fake cycles and double frees.
|
||
* JobStart needs to do the update so we can proceed up the
|
||
* graph when given the -n flag..
|
||
*/
|
||
done = FALSE;
|
||
break;
|
||
}
|
||
} else {
|
||
done = TRUE;
|
||
}
|
||
|
||
if (done) {
|
||
Trace_Log(JOBEND, job);
|
||
if (!compatMake && !(job->flags & JOB_SPECIAL)) {
|
||
if ((*status != 0) ||
|
||
(aborting == ABORT_ERROR) ||
|
||
(aborting == ABORT_INTERRUPT))
|
||
Job_TokenReturn();
|
||
}
|
||
|
||
}
|
||
|
||
if (done &&
|
||
(aborting != ABORT_ERROR) &&
|
||
(aborting != ABORT_INTERRUPT) &&
|
||
(*status == 0))
|
||
{
|
||
/*
|
||
* As long as we aren't aborting and the job didn't return a non-zero
|
||
* status that we shouldn't ignore, we call Make_Update to update
|
||
* the parents. In addition, any saved commands for the node are placed
|
||
* on the .END target.
|
||
*/
|
||
if (job->tailCmds != NILLNODE) {
|
||
Lst_ForEachFrom(job->node->commands, job->tailCmds,
|
||
JobSaveCommand,
|
||
(ClientData)job->node);
|
||
}
|
||
job->node->made = MADE;
|
||
if (!(job->flags & JOB_SPECIAL))
|
||
Job_TokenReturn();
|
||
Make_Update(job->node);
|
||
free(job);
|
||
} else if (*status != 0) {
|
||
errors += 1;
|
||
free(job);
|
||
}
|
||
JobRestartJobs();
|
||
|
||
/*
|
||
* Set aborting if any error.
|
||
*/
|
||
if (errors && !keepgoing && (aborting != ABORT_INTERRUPT)) {
|
||
/*
|
||
* If we found any errors in this batch of children and the -k flag
|
||
* wasn't given, we set the aborting flag so no more jobs get
|
||
* started.
|
||
*/
|
||
aborting = ABORT_ERROR;
|
||
}
|
||
|
||
if ((aborting == ABORT_ERROR) && Job_Empty()) {
|
||
/*
|
||
* If we are aborting and the job table is now empty, we finish.
|
||
*/
|
||
Finish(errors);
|
||
}
|
||
}
|
||
|
||
/*-
|
||
*-----------------------------------------------------------------------
|
||
* Job_Touch --
|
||
* Touch the given target. Called by JobStart when the -t flag was
|
||
* given
|
||
*
|
||
* Input:
|
||
* gn the node of the file to touch
|
||
* silent TRUE if should not print message
|
||
*
|
||
* Results:
|
||
* None
|
||
*
|
||
* Side Effects:
|
||
* The data modification of the file is changed. In addition, if the
|
||
* file did not exist, it is created.
|
||
*-----------------------------------------------------------------------
|
||
*/
|
||
void
|
||
Job_Touch(GNode *gn, Boolean silent)
|
||
{
|
||
int streamID; /* ID of stream opened to do the touch */
|
||
struct utimbuf times; /* Times for utime() call */
|
||
|
||
if (gn->type & (OP_JOIN|OP_USE|OP_USEBEFORE|OP_EXEC|OP_OPTIONAL|OP_PHONY)) {
|
||
/*
|
||
* .JOIN, .USE, .ZEROTIME and .OPTIONAL targets are "virtual" targets
|
||
* and, as such, shouldn't really be created.
|
||
*/
|
||
return;
|
||
}
|
||
|
||
if (!silent || NoExecute(gn)) {
|
||
(void)fprintf(stdout, "touch %s\n", gn->name);
|
||
(void)fflush(stdout);
|
||
}
|
||
|
||
if (NoExecute(gn)) {
|
||
return;
|
||
}
|
||
|
||
if (gn->type & OP_ARCHV) {
|
||
Arch_Touch(gn);
|
||
} else if (gn->type & OP_LIB) {
|
||
Arch_TouchLib(gn);
|
||
} else {
|
||
char *file = gn->path ? gn->path : gn->name;
|
||
|
||
times.actime = times.modtime = now;
|
||
if (utime(file, ×) < 0){
|
||
streamID = open(file, O_RDWR | O_CREAT, 0666);
|
||
|
||
if (streamID >= 0) {
|
||
char c;
|
||
|
||
/*
|
||
* Read and write a byte to the file to change the
|
||
* modification time, then close the file.
|
||
*/
|
||
if (read(streamID, &c, 1) == 1) {
|
||
(void)lseek(streamID, (off_t)0, SEEK_SET);
|
||
(void)write(streamID, &c, 1);
|
||
}
|
||
|
||
(void)close(streamID);
|
||
} else {
|
||
(void)fprintf(stdout, "*** couldn't touch %s: %s",
|
||
file, strerror(errno));
|
||
(void)fflush(stdout);
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
/*-
|
||
*-----------------------------------------------------------------------
|
||
* Job_CheckCommands --
|
||
* Make sure the given node has all the commands it needs.
|
||
*
|
||
* Input:
|
||
* gn The target whose commands need verifying
|
||
* abortProc Function to abort with message
|
||
*
|
||
* Results:
|
||
* TRUE if the commands list is/was ok.
|
||
*
|
||
* Side Effects:
|
||
* The node will have commands from the .DEFAULT rule added to it
|
||
* if it needs them.
|
||
*-----------------------------------------------------------------------
|
||
*/
|
||
Boolean
|
||
Job_CheckCommands(GNode *gn, void (*abortProc)(const char *, ...))
|
||
{
|
||
if (OP_NOP(gn->type) && Lst_IsEmpty(gn->commands) &&
|
||
((gn->type & OP_LIB) == 0 || Lst_IsEmpty(gn->children))) {
|
||
/*
|
||
* No commands. Look for .DEFAULT rule from which we might infer
|
||
* commands
|
||
*/
|
||
if ((DEFAULT != NILGNODE) && !Lst_IsEmpty(DEFAULT->commands) &&
|
||
(gn->type & OP_SPECIAL) == 0) {
|
||
char *p1;
|
||
/*
|
||
* Make only looks for a .DEFAULT if the node was never the
|
||
* target of an operator, so that's what we do too. If
|
||
* a .DEFAULT was given, we substitute its commands for gn's
|
||
* commands and set the IMPSRC variable to be the target's name
|
||
* The DEFAULT node acts like a transformation rule, in that
|
||
* gn also inherits any attributes or sources attached to
|
||
* .DEFAULT itself.
|
||
*/
|
||
Make_HandleUse(DEFAULT, gn);
|
||
Var_Set(IMPSRC, Var_Value(TARGET, gn, &p1), gn, 0);
|
||
if (p1)
|
||
free(p1);
|
||
} else if (Dir_MTime(gn) == 0 && (gn->type & OP_SPECIAL) == 0) {
|
||
/*
|
||
* The node wasn't the target of an operator we have no .DEFAULT
|
||
* rule to go on and the target doesn't already exist. There's
|
||
* nothing more we can do for this branch. If the -k flag wasn't
|
||
* given, we stop in our tracks, otherwise we just don't update
|
||
* this node's parents so they never get examined.
|
||
*/
|
||
static const char msg[] = ": don't know how to make";
|
||
|
||
if (gn->type & OP_OPTIONAL) {
|
||
(void)fprintf(stdout, "%s%s %s(ignored)\n", progname,
|
||
msg, gn->name);
|
||
(void)fflush(stdout);
|
||
} else if (keepgoing) {
|
||
(void)fprintf(stdout, "%s%s %s(continuing)\n", progname,
|
||
msg, gn->name);
|
||
(void)fflush(stdout);
|
||
return FALSE;
|
||
} else {
|
||
(*abortProc)("%s%s %s. Stop", progname, msg, gn->name);
|
||
return FALSE;
|
||
}
|
||
}
|
||
}
|
||
return TRUE;
|
||
}
|
||
#ifdef RMT_WILL_WATCH
|
||
/*-
|
||
*-----------------------------------------------------------------------
|
||
* JobLocalInput --
|
||
* Handle a pipe becoming readable. Callback function for Rmt_Watch
|
||
*
|
||
* Input:
|
||
* stream Stream that's ready (ignored)
|
||
* job Job to which the stream belongs
|
||
*
|
||
* Results:
|
||
* None
|
||
*
|
||
* Side Effects:
|
||
* JobDoOutput is called.
|
||
*
|
||
*-----------------------------------------------------------------------
|
||
*/
|
||
/*ARGSUSED*/
|
||
static void
|
||
JobLocalInput(int stream, Job *job)
|
||
{
|
||
JobDoOutput(job, FALSE);
|
||
}
|
||
#endif /* RMT_WILL_WATCH */
|
||
|
||
/*-
|
||
*-----------------------------------------------------------------------
|
||
* JobExec --
|
||
* Execute the shell for the given job. Called from JobStart and
|
||
* JobRestart.
|
||
*
|
||
* Input:
|
||
* job Job to execute
|
||
*
|
||
* Results:
|
||
* None.
|
||
*
|
||
* Side Effects:
|
||
* A shell is executed, outputs is altered and the Job structure added
|
||
* to the job table.
|
||
*
|
||
*-----------------------------------------------------------------------
|
||
*/
|
||
static void
|
||
JobExec(Job *job, char **argv)
|
||
{
|
||
int cpid; /* ID of new child */
|
||
sigset_t mask;
|
||
|
||
job->flags &= ~JOB_TRACED;
|
||
|
||
if (DEBUG(JOB)) {
|
||
int i;
|
||
|
||
(void)fprintf(stdout, "Running %s %sly\n", job->node->name,
|
||
job->flags&JOB_REMOTE?"remote":"local");
|
||
(void)fprintf(stdout, "\tCommand: ");
|
||
for (i = 0; argv[i] != NULL; i++) {
|
||
(void)fprintf(stdout, "%s ", argv[i]);
|
||
}
|
||
(void)fprintf(stdout, "\n");
|
||
(void)fflush(stdout);
|
||
}
|
||
|
||
/*
|
||
* Some jobs produce no output and it's disconcerting to have
|
||
* no feedback of their running (since they produce no output, the
|
||
* banner with their name in it never appears). This is an attempt to
|
||
* provide that feedback, even if nothing follows it.
|
||
*/
|
||
if ((lastNode != job->node) && (job->flags & JOB_FIRST) &&
|
||
!(job->flags & JOB_SILENT)) {
|
||
MESSAGE(stdout, job->node);
|
||
lastNode = job->node;
|
||
}
|
||
|
||
#ifdef RMT_NO_EXEC
|
||
if (job->flags & JOB_REMOTE) {
|
||
goto jobExecFinish;
|
||
}
|
||
#endif /* RMT_NO_EXEC */
|
||
|
||
/* No interruptions until this job is on the `jobs' list */
|
||
JobSigLock(&mask);
|
||
|
||
if ((cpid = vfork()) == -1) {
|
||
Punt("Cannot vfork: %s", strerror(errno));
|
||
} else if (cpid == 0) {
|
||
|
||
/*
|
||
* Reset all signal handlers; this is necessary because we also
|
||
* need to unblock signals before we exec(2).
|
||
*/
|
||
JobSigReset();
|
||
|
||
/* Now unblock signals */
|
||
sigemptyset(&mask);
|
||
JobSigUnlock(&mask);
|
||
|
||
/*
|
||
* Must duplicate the input stream down to the child's input and
|
||
* reset it to the beginning (again). Since the stream was marked
|
||
* close-on-exec, we must clear that bit in the new input.
|
||
*/
|
||
if (dup2(FILENO(job->cmdFILE), 0) == -1) {
|
||
execError("dup2", "job->cmdFILE");
|
||
_exit(1);
|
||
}
|
||
(void)fcntl(0, F_SETFD, 0);
|
||
(void)lseek(0, (off_t)0, SEEK_SET);
|
||
|
||
if (job->node->type & OP_MAKE) {
|
||
/*
|
||
* Pass job token pipe to submakes.
|
||
*/
|
||
fcntl(job_pipe[0], F_SETFD, 0);
|
||
fcntl(job_pipe[1], F_SETFD, 0);
|
||
}
|
||
|
||
if (usePipes) {
|
||
/*
|
||
* Set up the child's output to be routed through the pipe
|
||
* we've created for it.
|
||
*/
|
||
if (dup2(job->outPipe, 1) == -1) {
|
||
execError("dup2", "job->outPipe");
|
||
_exit(1);
|
||
}
|
||
} else {
|
||
/*
|
||
* We're capturing output in a file, so we duplicate the
|
||
* descriptor to the temporary file into the standard
|
||
* output.
|
||
*/
|
||
if (dup2(job->outFd, 1) == -1) {
|
||
execError("dup2", "job->outFd");
|
||
_exit(1);
|
||
}
|
||
}
|
||
/*
|
||
* The output channels are marked close on exec. This bit was
|
||
* duplicated by the dup2(on some systems), so we have to clear
|
||
* it before routing the shell's error output to the same place as
|
||
* its standard output.
|
||
*/
|
||
(void)fcntl(1, F_SETFD, 0);
|
||
if (dup2(1, 2) == -1) {
|
||
execError("dup2", "1, 2");
|
||
_exit(1);
|
||
}
|
||
|
||
#ifdef USE_PGRP
|
||
/*
|
||
* We want to switch the child into a different process family so
|
||
* we can kill it and all its descendants in one fell swoop,
|
||
* by killing its process family, but not commit suicide.
|
||
*/
|
||
# if defined(SYSV)
|
||
(void)setsid();
|
||
# else
|
||
(void)setpgid(0, getpid());
|
||
# endif
|
||
#endif /* USE_PGRP */
|
||
|
||
#ifdef REMOTE
|
||
if (job->flags & JOB_REMOTE) {
|
||
Rmt_Exec(shellPath, argv, FALSE);
|
||
} else
|
||
#endif /* REMOTE */
|
||
{
|
||
(void)execv(shellPath, argv);
|
||
execError("exec", shellPath);
|
||
}
|
||
_exit(1);
|
||
} else {
|
||
job->pid = cpid;
|
||
|
||
Trace_Log(JOBSTART, job);
|
||
|
||
if (usePipes && (job->flags & JOB_FIRST)) {
|
||
/*
|
||
* The first time a job is run for a node, we set the current
|
||
* position in the buffer to the beginning and mark another
|
||
* stream to watch in the outputs mask
|
||
*/
|
||
job->curPos = 0;
|
||
|
||
#ifdef RMT_WILL_WATCH
|
||
Rmt_Watch(job->inPipe, JobLocalInput, job);
|
||
#else
|
||
watchfd(job);
|
||
#endif /* RMT_WILL_WATCH */
|
||
}
|
||
|
||
if (job->flags & JOB_REMOTE) {
|
||
#ifndef REMOTE
|
||
job->rmtID = 0;
|
||
#else
|
||
job->rmtID = Rmt_LastID(job->pid);
|
||
#endif /* REMOTE */
|
||
} else {
|
||
nLocal += 1;
|
||
/*
|
||
* XXX: Used to not happen if REMOTE. Why?
|
||
*/
|
||
if (job->cmdFILE != NULL && job->cmdFILE != stdout) {
|
||
(void)fclose(job->cmdFILE);
|
||
job->cmdFILE = NULL;
|
||
}
|
||
}
|
||
}
|
||
|
||
#ifdef RMT_NO_EXEC
|
||
jobExecFinish:
|
||
#endif
|
||
/*
|
||
* Now the job is actually running, add it to the table.
|
||
*/
|
||
if (DEBUG(JOB)) {
|
||
printf("JobExec(%s): pid %d added to jobs table\n",
|
||
job->node->name, job->pid);
|
||
}
|
||
nJobs += 1;
|
||
(void)Lst_AtEnd(jobs, (ClientData)job);
|
||
JobSigUnlock(&mask);
|
||
}
|
||
|
||
/*-
|
||
*-----------------------------------------------------------------------
|
||
* JobMakeArgv --
|
||
* Create the argv needed to execute the shell for a given job.
|
||
*
|
||
*
|
||
* Results:
|
||
*
|
||
* Side Effects:
|
||
*
|
||
*-----------------------------------------------------------------------
|
||
*/
|
||
static void
|
||
JobMakeArgv(Job *job, char **argv)
|
||
{
|
||
int argc;
|
||
static char args[10]; /* For merged arguments */
|
||
|
||
argv[0] = UNCONST(shellName);
|
||
argc = 1;
|
||
|
||
if ((commandShell->exit && (*commandShell->exit != '-')) ||
|
||
(commandShell->echo && (*commandShell->echo != '-')))
|
||
{
|
||
/*
|
||
* At least one of the flags doesn't have a minus before it, so
|
||
* merge them together. Have to do this because the *(&(@*#*&#$#
|
||
* Bourne shell thinks its second argument is a file to source.
|
||
* Grrrr. Note the ten-character limitation on the combined arguments.
|
||
*/
|
||
(void)snprintf(args, sizeof(args), "-%s%s",
|
||
((job->flags & JOB_IGNERR) ? "" :
|
||
(commandShell->exit ? commandShell->exit : "")),
|
||
((job->flags & JOB_SILENT) ? "" :
|
||
(commandShell->echo ? commandShell->echo : "")));
|
||
|
||
if (args[1]) {
|
||
argv[argc] = args;
|
||
argc++;
|
||
}
|
||
} else {
|
||
if (!(job->flags & JOB_IGNERR) && commandShell->exit) {
|
||
argv[argc] = UNCONST(commandShell->exit);
|
||
argc++;
|
||
}
|
||
if (!(job->flags & JOB_SILENT) && commandShell->echo) {
|
||
argv[argc] = UNCONST(commandShell->echo);
|
||
argc++;
|
||
}
|
||
}
|
||
argv[argc] = NULL;
|
||
}
|
||
|
||
/*-
|
||
*-----------------------------------------------------------------------
|
||
* JobRestart --
|
||
* Restart a job that stopped for some reason.
|
||
*
|
||
* Input:
|
||
* job Job to restart
|
||
*
|
||
* Results:
|
||
* 1 if max number of running jobs has been reached, 0 otherwise.
|
||
*
|
||
*-----------------------------------------------------------------------
|
||
*/
|
||
static int
|
||
JobRestart(Job *job)
|
||
{
|
||
#ifdef REMOTE
|
||
int host;
|
||
#endif
|
||
|
||
if (job->flags & JOB_REMIGRATE) {
|
||
if (
|
||
#ifdef REMOTE
|
||
verboseRemigrates ||
|
||
#endif
|
||
DEBUG(JOB)) {
|
||
(void)fprintf(stdout, "*** remigrating %x(%s)\n",
|
||
job->pid, job->node->name);
|
||
(void)fflush(stdout);
|
||
}
|
||
|
||
#ifdef REMOTE
|
||
if (!Rmt_ReExport(job->pid, job->node, &host)) {
|
||
if (verboseRemigrates || DEBUG(JOB)) {
|
||
(void)fprintf(stdout, "*** couldn't migrate...\n");
|
||
(void)fflush(stdout);
|
||
}
|
||
#endif
|
||
if (nLocal != maxLocal) {
|
||
/*
|
||
* Job cannot be remigrated, but there's room on the local
|
||
* machine, so resume the job and note that another
|
||
* local job has started.
|
||
*/
|
||
if (
|
||
#ifdef REMOTE
|
||
verboseRemigrates ||
|
||
#endif
|
||
DEBUG(JOB)) {
|
||
(void)fprintf(stdout, "*** resuming on local machine\n");
|
||
(void)fflush(stdout);
|
||
}
|
||
KILL(job->pid, SIGCONT);
|
||
nLocal +=1;
|
||
#ifdef REMOTE
|
||
job->flags &= ~(JOB_REMIGRATE|JOB_RESUME|JOB_REMOTE);
|
||
job->flags |= JOB_CONTINUING;
|
||
#else
|
||
job->flags &= ~(JOB_REMIGRATE|JOB_RESUME);
|
||
#endif
|
||
} else {
|
||
/*
|
||
* Job cannot be restarted. Mark the table as full and
|
||
* place the job back on the list of stopped jobs.
|
||
*/
|
||
if (
|
||
#ifdef REMOTE
|
||
verboseRemigrates ||
|
||
#endif
|
||
DEBUG(JOB)) {
|
||
(void)fprintf(stdout, "*** holding\n");
|
||
(void)fflush(stdout);
|
||
}
|
||
(void)Lst_AtFront(stoppedJobs, (ClientData)job);
|
||
return 1;
|
||
}
|
||
#ifdef REMOTE
|
||
} else {
|
||
/*
|
||
* Clear out the remigrate and resume flags. Set the continuing
|
||
* flag so we know later on that the process isn't exiting just
|
||
* because of a signal.
|
||
*/
|
||
job->flags &= ~(JOB_REMIGRATE|JOB_RESUME);
|
||
job->flags |= JOB_CONTINUING;
|
||
job->rmtID = host;
|
||
}
|
||
#endif
|
||
|
||
(void)Lst_AtEnd(jobs, (ClientData)job);
|
||
nJobs += 1;
|
||
} else if (job->flags & JOB_RESTART) {
|
||
/*
|
||
* Set up the control arguments to the shell. This is based on the
|
||
* flags set earlier for this job. If the JOB_IGNERR flag is clear,
|
||
* the 'exit' flag of the commandShell is used to cause it to exit
|
||
* upon receiving an error. If the JOB_SILENT flag is clear, the
|
||
* 'echo' flag of the commandShell is used to get it to start echoing
|
||
* as soon as it starts processing commands.
|
||
*/
|
||
char *argv[10];
|
||
|
||
JobMakeArgv(job, argv);
|
||
|
||
if (DEBUG(JOB)) {
|
||
(void)fprintf(stdout, "Restarting %s...", job->node->name);
|
||
(void)fflush(stdout);
|
||
}
|
||
#ifdef REMOTE
|
||
if ((job->node->type & OP_NOEXPORT) ||
|
||
(nLocal < maxLocal && runLocalFirst)
|
||
# ifdef RMT_NO_EXEC
|
||
|| !Rmt_Export(shellPath, argv, job)
|
||
# else
|
||
|| !Rmt_Begin(shellPath, argv, job->node)
|
||
# endif
|
||
)
|
||
#endif
|
||
{
|
||
if (((nLocal >= maxLocal) && !(job->flags & JOB_SPECIAL))) {
|
||
/*
|
||
* Can't be exported and not allowed to run locally -- put it
|
||
* back on the hold queue and mark the table full
|
||
*/
|
||
if (DEBUG(JOB)) {
|
||
(void)fprintf(stdout, "holding\n");
|
||
(void)fflush(stdout);
|
||
}
|
||
(void)Lst_AtFront(stoppedJobs, (ClientData)job);
|
||
return 1;
|
||
} else {
|
||
/*
|
||
* Job may be run locally.
|
||
*/
|
||
if (DEBUG(JOB)) {
|
||
(void)fprintf(stdout, "running locally\n");
|
||
(void)fflush(stdout);
|
||
}
|
||
job->flags &= ~JOB_REMOTE;
|
||
}
|
||
}
|
||
#ifdef REMOTE
|
||
else {
|
||
/*
|
||
* Can be exported. Hooray!
|
||
*/
|
||
if (DEBUG(JOB)) {
|
||
(void)fprintf(stdout, "exporting\n");
|
||
(void)fflush(stdout);
|
||
}
|
||
job->flags |= JOB_REMOTE;
|
||
}
|
||
#endif
|
||
JobExec(job, argv);
|
||
} else {
|
||
/*
|
||
* The job has stopped and needs to be restarted. Why it stopped,
|
||
* we don't know...
|
||
*/
|
||
if (DEBUG(JOB)) {
|
||
(void)fprintf(stdout, "Resuming %s...", job->node->name);
|
||
(void)fflush(stdout);
|
||
}
|
||
if ((nJobs != maxJobs) &&
|
||
((job->flags & JOB_REMOTE) ||
|
||
(nLocal < maxLocal) ||
|
||
((maxLocal == 0) &&
|
||
((job->flags & JOB_SPECIAL)
|
||
#ifdef REMOTE
|
||
&& (job->node->type & OP_NOEXPORT)
|
||
#endif
|
||
))))
|
||
{
|
||
/*
|
||
* If the job is remote, it's ok to resume it as long as the
|
||
* maximum concurrency won't be exceeded. If it's local and
|
||
* we haven't reached the local concurrency limit already (or the
|
||
* job must be run locally and maxLocal is 0), it's also ok to
|
||
* resume it.
|
||
*/
|
||
Boolean error;
|
||
int status;
|
||
|
||
#ifdef RMT_WANTS_SIGNALS
|
||
if (job->flags & JOB_REMOTE) {
|
||
error = !Rmt_Signal(job, SIGCONT);
|
||
} else
|
||
#endif /* RMT_WANTS_SIGNALS */
|
||
error = (KILL(job->pid, SIGCONT) != 0);
|
||
|
||
if (!error) {
|
||
/*
|
||
* Make sure the user knows we've continued the beast and
|
||
* actually put the thing in the job table.
|
||
*/
|
||
job->flags |= JOB_CONTINUING;
|
||
status = W_STOPCODE(SIGCONT);
|
||
JobFinish(job, &status);
|
||
|
||
job->flags &= ~(JOB_RESUME|JOB_CONTINUING);
|
||
if (DEBUG(JOB)) {
|
||
(void)fprintf(stdout, "done\n");
|
||
(void)fflush(stdout);
|
||
}
|
||
} else {
|
||
Error("couldn't resume %s: %s",
|
||
job->node->name, strerror(errno));
|
||
status = W_EXITCODE(1, 0);
|
||
JobFinish(job, &status);
|
||
}
|
||
} else {
|
||
/*
|
||
* Job cannot be restarted. Mark the table as full and
|
||
* place the job back on the list of stopped jobs.
|
||
*/
|
||
if (DEBUG(JOB)) {
|
||
(void)fprintf(stdout, "table full\n");
|
||
(void)fflush(stdout);
|
||
}
|
||
(void)Lst_AtFront(stoppedJobs, (ClientData)job);
|
||
return 1;
|
||
}
|
||
}
|
||
return 0;
|
||
}
|
||
|
||
/*-
|
||
*-----------------------------------------------------------------------
|
||
* JobStart --
|
||
* Start a target-creation process going for the target described
|
||
* by the graph node gn.
|
||
*
|
||
* Input:
|
||
* gn target to create
|
||
* flags flags for the job to override normal ones.
|
||
* e.g. JOB_SPECIAL or JOB_IGNDOTS
|
||
* previous The previous Job structure for this node, if any.
|
||
*
|
||
* Results:
|
||
* JOB_ERROR if there was an error in the commands, JOB_FINISHED
|
||
* if there isn't actually anything left to do for the job and
|
||
* JOB_RUNNING if the job has been started.
|
||
*
|
||
* Side Effects:
|
||
* A new Job node is created and added to the list of running
|
||
* jobs. PMake is forked and a child shell created.
|
||
*-----------------------------------------------------------------------
|
||
*/
|
||
static int
|
||
JobStart(GNode *gn, int flags, Job *previous)
|
||
{
|
||
Job *job; /* new job descriptor */
|
||
char *argv[10]; /* Argument vector to shell */
|
||
Boolean cmdsOK; /* true if the nodes commands were all right */
|
||
Boolean local; /* Set true if the job was run locally */
|
||
Boolean noExec; /* Set true if we decide not to run the job */
|
||
int tfd; /* File descriptor to the temp file */
|
||
|
||
if (previous != NULL) {
|
||
previous->flags &= ~(JOB_FIRST|JOB_IGNERR|JOB_SILENT|JOB_REMOTE);
|
||
job = previous;
|
||
} else {
|
||
job = emalloc(sizeof(Job));
|
||
if (job == NULL) {
|
||
Punt("JobStart out of memory");
|
||
}
|
||
flags |= JOB_FIRST;
|
||
}
|
||
if (gn->type & OP_SPECIAL)
|
||
flags |= JOB_SPECIAL;
|
||
|
||
job->node = gn;
|
||
job->tailCmds = NILLNODE;
|
||
|
||
/*
|
||
* Set the initial value of the flags for this job based on the global
|
||
* ones and the node's attributes... Any flags supplied by the caller
|
||
* are also added to the field.
|
||
*/
|
||
job->flags = 0;
|
||
if (Targ_Ignore(gn)) {
|
||
job->flags |= JOB_IGNERR;
|
||
}
|
||
if (Targ_Silent(gn)) {
|
||
job->flags |= JOB_SILENT;
|
||
}
|
||
job->flags |= flags;
|
||
|
||
/*
|
||
* Check the commands now so any attributes from .DEFAULT have a chance
|
||
* to migrate to the node
|
||
*/
|
||
if (!compatMake && job->flags & JOB_FIRST) {
|
||
cmdsOK = Job_CheckCommands(gn, Error);
|
||
} else {
|
||
cmdsOK = TRUE;
|
||
}
|
||
|
||
#ifndef RMT_WILL_WATCH
|
||
job->inPollfd = NULL;
|
||
#endif
|
||
/*
|
||
* If the -n flag wasn't given, we open up OUR (not the child's)
|
||
* temporary file to stuff commands in it. The thing is rd/wr so we don't
|
||
* need to reopen it to feed it to the shell. If the -n flag *was* given,
|
||
* we just set the file to be stdout. Cute, huh?
|
||
*/
|
||
if (((gn->type & OP_MAKE) && !(noRecursiveExecute)) ||
|
||
(!noExecute && !touchFlag)) {
|
||
/*
|
||
* tfile is the name of a file into which all shell commands are
|
||
* put. It is used over by removing it before the child shell is
|
||
* executed. The XXXXXX in the string are replaced by the pid of
|
||
* the make process in a 6-character field with leading zeroes.
|
||
*/
|
||
char tfile[sizeof(TMPPAT)];
|
||
sigset_t mask;
|
||
/*
|
||
* We're serious here, but if the commands were bogus, we're
|
||
* also dead...
|
||
*/
|
||
if (!cmdsOK) {
|
||
DieHorribly();
|
||
}
|
||
|
||
JobSigLock(&mask);
|
||
(void)strcpy(tfile, TMPPAT);
|
||
if ((tfd = mkstemp(tfile)) == -1)
|
||
Punt("Could not create temporary file %s", strerror(errno));
|
||
if (!DEBUG(SCRIPT))
|
||
(void)eunlink(tfile);
|
||
JobSigUnlock(&mask);
|
||
|
||
job->cmdFILE = fdopen(tfd, "w+");
|
||
if (job->cmdFILE == NULL) {
|
||
Punt("Could not fdopen %s", tfile);
|
||
}
|
||
(void)fcntl(FILENO(job->cmdFILE), F_SETFD, 1);
|
||
/*
|
||
* Send the commands to the command file, flush all its buffers then
|
||
* rewind and remove the thing.
|
||
*/
|
||
noExec = FALSE;
|
||
|
||
/*
|
||
* used to be backwards; replace when start doing multiple commands
|
||
* per shell.
|
||
*/
|
||
if (compatMake) {
|
||
/*
|
||
* Be compatible: If this is the first time for this node,
|
||
* verify its commands are ok and open the commands list for
|
||
* sequential access by later invocations of JobStart.
|
||
* Once that is done, we take the next command off the list
|
||
* and print it to the command file. If the command was an
|
||
* ellipsis, note that there's nothing more to execute.
|
||
*/
|
||
if ((job->flags&JOB_FIRST) && (Lst_Open(gn->commands) != SUCCESS)){
|
||
cmdsOK = FALSE;
|
||
} else {
|
||
LstNode ln = Lst_Next(gn->commands);
|
||
|
||
if ((ln == NILLNODE) ||
|
||
JobPrintCommand((ClientData)Lst_Datum(ln),
|
||
(ClientData) job))
|
||
{
|
||
noExec = TRUE;
|
||
Lst_Close(gn->commands);
|
||
}
|
||
if (noExec && !(job->flags & JOB_FIRST)) {
|
||
/*
|
||
* If we're not going to execute anything, the job
|
||
* is done and we need to close down the various
|
||
* file descriptors we've opened for output, then
|
||
* call JobDoOutput to catch the final characters or
|
||
* send the file to the screen... Note that the i/o streams
|
||
* are only open if this isn't the first job.
|
||
* Note also that this could not be done in
|
||
* Job_CatchChildren b/c it wasn't clear if there were
|
||
* more commands to execute or not...
|
||
*/
|
||
JobClose(job);
|
||
}
|
||
}
|
||
} else {
|
||
/*
|
||
* We can do all the commands at once. hooray for sanity
|
||
*/
|
||
numCommands = 0;
|
||
Lst_ForEach(gn->commands, JobPrintCommand, (ClientData)job);
|
||
|
||
/*
|
||
* If we didn't print out any commands to the shell script,
|
||
* there's not much point in executing the shell, is there?
|
||
*/
|
||
if (numCommands == 0) {
|
||
noExec = TRUE;
|
||
}
|
||
}
|
||
} else if (NoExecute(gn)) {
|
||
/*
|
||
* Not executing anything -- just print all the commands to stdout
|
||
* in one fell swoop. This will still set up job->tailCmds correctly.
|
||
*/
|
||
if (lastNode != gn) {
|
||
MESSAGE(stdout, gn);
|
||
lastNode = gn;
|
||
}
|
||
job->cmdFILE = stdout;
|
||
/*
|
||
* Only print the commands if they're ok, but don't die if they're
|
||
* not -- just let the user know they're bad and keep going. It
|
||
* doesn't do any harm in this case and may do some good.
|
||
*/
|
||
if (cmdsOK) {
|
||
Lst_ForEach(gn->commands, JobPrintCommand, (ClientData)job);
|
||
}
|
||
/*
|
||
* Don't execute the shell, thank you.
|
||
*/
|
||
noExec = TRUE;
|
||
} else {
|
||
/*
|
||
* Just touch the target and note that no shell should be executed.
|
||
* Set cmdFILE to stdout to make life easier. Check the commands, too,
|
||
* but don't die if they're no good -- it does no harm to keep working
|
||
* up the graph.
|
||
*/
|
||
job->cmdFILE = stdout;
|
||
Job_Touch(gn, job->flags&JOB_SILENT);
|
||
noExec = TRUE;
|
||
}
|
||
|
||
/*
|
||
* If we're not supposed to execute a shell, don't.
|
||
*/
|
||
if (noExec) {
|
||
/*
|
||
* Unlink and close the command file if we opened one
|
||
*/
|
||
if (job->cmdFILE != stdout) {
|
||
if (job->cmdFILE != NULL) {
|
||
(void)fclose(job->cmdFILE);
|
||
job->cmdFILE = NULL;
|
||
}
|
||
} else {
|
||
(void)fflush(stdout);
|
||
}
|
||
|
||
/*
|
||
* We only want to work our way up the graph if we aren't here because
|
||
* the commands for the job were no good.
|
||
*/
|
||
if (cmdsOK) {
|
||
if (aborting == 0) {
|
||
if (job->tailCmds != NILLNODE) {
|
||
Lst_ForEachFrom(job->node->commands, job->tailCmds,
|
||
JobSaveCommand,
|
||
(ClientData)job->node);
|
||
}
|
||
if (!(job->flags & JOB_SPECIAL))
|
||
Job_TokenReturn();
|
||
job->node->made = MADE;
|
||
Make_Update(job->node);
|
||
}
|
||
free(job);
|
||
return(JOB_FINISHED);
|
||
} else {
|
||
free(job);
|
||
return(JOB_ERROR);
|
||
}
|
||
} else {
|
||
(void)fflush(job->cmdFILE);
|
||
}
|
||
|
||
/*
|
||
* Set up the control arguments to the shell. This is based on the flags
|
||
* set earlier for this job.
|
||
*/
|
||
JobMakeArgv(job, argv);
|
||
|
||
/*
|
||
* If we're using pipes to catch output, create the pipe by which we'll
|
||
* get the shell's output. If we're using files, print out that we're
|
||
* starting a job and then set up its temporary-file name.
|
||
*/
|
||
if (!compatMake || (job->flags & JOB_FIRST)) {
|
||
if (usePipes) {
|
||
int fd[2];
|
||
if (pipe(fd) == -1)
|
||
Punt("Cannot create pipe: %s", strerror(errno));
|
||
job->inPipe = fd[0];
|
||
job->outPipe = fd[1];
|
||
(void)fcntl(job->inPipe, F_SETFD, 1);
|
||
(void)fcntl(job->outPipe, F_SETFD, 1);
|
||
} else {
|
||
(void)fprintf(stdout, "Remaking `%s'\n", gn->name);
|
||
(void)fflush(stdout);
|
||
(void)strcpy(job->outFile, TMPPAT);
|
||
job->outFd = mkstemp(job->outFile);
|
||
(void)fcntl(job->outFd, F_SETFD, 1);
|
||
}
|
||
}
|
||
|
||
#ifdef REMOTE
|
||
if (!(gn->type & OP_NOEXPORT) && !(runLocalFirst && nLocal < maxLocal)) {
|
||
#ifdef RMT_NO_EXEC
|
||
local = !Rmt_Export(shellPath, argv, job);
|
||
#else
|
||
local = !Rmt_Begin(shellPath, argv, job->node);
|
||
#endif /* RMT_NO_EXEC */
|
||
if (!local) {
|
||
job->flags |= JOB_REMOTE;
|
||
}
|
||
} else
|
||
#endif
|
||
local = TRUE;
|
||
|
||
if (local && (((nLocal >= maxLocal) &&
|
||
!(job->flags & JOB_SPECIAL) &&
|
||
#ifdef REMOTE
|
||
(!(gn->type & OP_NOEXPORT) || (maxLocal != 0))
|
||
#else
|
||
(maxLocal != 0)
|
||
#endif
|
||
)))
|
||
{
|
||
/*
|
||
* The job can only be run locally, but we've hit the limit of
|
||
* local concurrency, so put the job on hold until some other job
|
||
* finishes. Note that the special jobs (.BEGIN, .INTERRUPT and .END)
|
||
* may be run locally even when the local limit has been reached
|
||
* (e.g. when maxLocal == 0), though they will be exported if at
|
||
* all possible. In addition, any target marked with .NOEXPORT will
|
||
* be run locally if maxLocal is 0.
|
||
*/
|
||
job->flags |= JOB_RESTART;
|
||
(void)Lst_AtEnd(stoppedJobs, (ClientData)job);
|
||
} else {
|
||
JobExec(job, argv);
|
||
}
|
||
return(JOB_RUNNING);
|
||
}
|
||
|
||
static char *
|
||
JobOutput(Job *job, char *cp, char *endp, int msg)
|
||
{
|
||
char *ecp;
|
||
|
||
if (commandShell->noPrint) {
|
||
ecp = Str_FindSubstring(cp, commandShell->noPrint);
|
||
while (ecp != NULL) {
|
||
if (cp != ecp) {
|
||
*ecp = '\0';
|
||
if (msg && job->node != lastNode) {
|
||
MESSAGE(stdout, job->node);
|
||
lastNode = job->node;
|
||
}
|
||
/*
|
||
* The only way there wouldn't be a newline after
|
||
* this line is if it were the last in the buffer.
|
||
* however, since the non-printable comes after it,
|
||
* there must be a newline, so we don't print one.
|
||
*/
|
||
(void)fprintf(stdout, "%s", cp);
|
||
(void)fflush(stdout);
|
||
}
|
||
cp = ecp + commandShell->noPLen;
|
||
if (cp != endp) {
|
||
/*
|
||
* Still more to print, look again after skipping
|
||
* the whitespace following the non-printable
|
||
* command....
|
||
*/
|
||
cp++;
|
||
while (*cp == ' ' || *cp == '\t' || *cp == '\n') {
|
||
cp++;
|
||
}
|
||
ecp = Str_FindSubstring(cp, commandShell->noPrint);
|
||
} else {
|
||
return cp;
|
||
}
|
||
}
|
||
}
|
||
return cp;
|
||
}
|
||
|
||
/*-
|
||
*-----------------------------------------------------------------------
|
||
* JobDoOutput --
|
||
* This function is called at different times depending on
|
||
* whether the user has specified that output is to be collected
|
||
* via pipes or temporary files. In the former case, we are called
|
||
* whenever there is something to read on the pipe. We collect more
|
||
* output from the given job and store it in the job's outBuf. If
|
||
* this makes up a line, we print it tagged by the job's identifier,
|
||
* as necessary.
|
||
* If output has been collected in a temporary file, we open the
|
||
* file and read it line by line, transfering it to our own
|
||
* output channel until the file is empty. At which point we
|
||
* remove the temporary file.
|
||
* In both cases, however, we keep our figurative eye out for the
|
||
* 'noPrint' line for the shell from which the output came. If
|
||
* we recognize a line, we don't print it. If the command is not
|
||
* alone on the line (the character after it is not \0 or \n), we
|
||
* do print whatever follows it.
|
||
*
|
||
* Input:
|
||
* job the job whose output needs printing
|
||
* finish TRUE if this is the last time we'll be called
|
||
* for this job
|
||
*
|
||
* Results:
|
||
* None
|
||
*
|
||
* Side Effects:
|
||
* curPos may be shifted as may the contents of outBuf.
|
||
*-----------------------------------------------------------------------
|
||
*/
|
||
STATIC void
|
||
JobDoOutput(Job *job, Boolean finish)
|
||
{
|
||
Boolean gotNL = FALSE; /* true if got a newline */
|
||
Boolean fbuf; /* true if our buffer filled up */
|
||
int nr; /* number of bytes read */
|
||
int i; /* auxiliary index into outBuf */
|
||
int max; /* limit for i (end of current data) */
|
||
int nRead; /* (Temporary) number of bytes read */
|
||
|
||
FILE *oFILE; /* Stream pointer to shell's output file */
|
||
char inLine[132];
|
||
|
||
|
||
if (usePipes) {
|
||
/*
|
||
* Read as many bytes as will fit in the buffer.
|
||
*/
|
||
end_loop:
|
||
gotNL = FALSE;
|
||
fbuf = FALSE;
|
||
|
||
nRead = read(job->inPipe, &job->outBuf[job->curPos],
|
||
JOB_BUFSIZE - job->curPos);
|
||
if (nRead < 0) {
|
||
if (DEBUG(JOB)) {
|
||
perror("JobDoOutput(piperead)");
|
||
}
|
||
nr = 0;
|
||
} else {
|
||
nr = nRead;
|
||
}
|
||
|
||
/*
|
||
* If we hit the end-of-file (the job is dead), we must flush its
|
||
* remaining output, so pretend we read a newline if there's any
|
||
* output remaining in the buffer.
|
||
* Also clear the 'finish' flag so we stop looping.
|
||
*/
|
||
if ((nr == 0) && (job->curPos != 0)) {
|
||
job->outBuf[job->curPos] = '\n';
|
||
nr = 1;
|
||
finish = FALSE;
|
||
} else if (nr == 0) {
|
||
finish = FALSE;
|
||
}
|
||
|
||
/*
|
||
* Look for the last newline in the bytes we just got. If there is
|
||
* one, break out of the loop with 'i' as its index and gotNL set
|
||
* TRUE.
|
||
*/
|
||
max = job->curPos + nr;
|
||
for (i = job->curPos + nr - 1; i >= job->curPos; i--) {
|
||
if (job->outBuf[i] == '\n') {
|
||
gotNL = TRUE;
|
||
break;
|
||
} else if (job->outBuf[i] == '\0') {
|
||
/*
|
||
* Why?
|
||
*/
|
||
job->outBuf[i] = ' ';
|
||
}
|
||
}
|
||
|
||
if (!gotNL) {
|
||
job->curPos += nr;
|
||
if (job->curPos == JOB_BUFSIZE) {
|
||
/*
|
||
* If we've run out of buffer space, we have no choice
|
||
* but to print the stuff. sigh.
|
||
*/
|
||
fbuf = TRUE;
|
||
i = job->curPos;
|
||
}
|
||
}
|
||
if (gotNL || fbuf) {
|
||
/*
|
||
* Need to send the output to the screen. Null terminate it
|
||
* first, overwriting the newline character if there was one.
|
||
* So long as the line isn't one we should filter (according
|
||
* to the shell description), we print the line, preceded
|
||
* by a target banner if this target isn't the same as the
|
||
* one for which we last printed something.
|
||
* The rest of the data in the buffer are then shifted down
|
||
* to the start of the buffer and curPos is set accordingly.
|
||
*/
|
||
job->outBuf[i] = '\0';
|
||
if (i >= job->curPos) {
|
||
char *cp;
|
||
|
||
cp = JobOutput(job, job->outBuf, &job->outBuf[i], FALSE);
|
||
|
||
/*
|
||
* There's still more in that thar buffer. This time, though,
|
||
* we know there's no newline at the end, so we add one of
|
||
* our own free will.
|
||
*/
|
||
if (*cp != '\0') {
|
||
if (job->node != lastNode) {
|
||
MESSAGE(stdout, job->node);
|
||
lastNode = job->node;
|
||
}
|
||
(void)fprintf(stdout, "%s%s", cp, gotNL ? "\n" : "");
|
||
(void)fflush(stdout);
|
||
}
|
||
}
|
||
if (i < max - 1) {
|
||
/* shift the remaining characters down */
|
||
(void)memcpy(job->outBuf, &job->outBuf[i + 1], max - (i + 1));
|
||
job->curPos = max - (i + 1);
|
||
|
||
} else {
|
||
/*
|
||
* We have written everything out, so we just start over
|
||
* from the start of the buffer. No copying. No nothing.
|
||
*/
|
||
job->curPos = 0;
|
||
}
|
||
}
|
||
if (finish) {
|
||
/*
|
||
* If the finish flag is true, we must loop until we hit
|
||
* end-of-file on the pipe. This is guaranteed to happen
|
||
* eventually since the other end of the pipe is now closed
|
||
* (we closed it explicitly and the child has exited). When
|
||
* we do get an EOF, finish will be set FALSE and we'll fall
|
||
* through and out.
|
||
*/
|
||
goto end_loop;
|
||
}
|
||
} else {
|
||
/*
|
||
* We've been called to retrieve the output of the job from the
|
||
* temporary file where it's been squirreled away. This consists of
|
||
* opening the file, reading the output line by line, being sure not
|
||
* to print the noPrint line for the shell we used, then close and
|
||
* remove the temporary file. Very simple.
|
||
*
|
||
* Change to read in blocks and do FindSubString type things as for
|
||
* pipes? That would allow for "@echo -n..."
|
||
*/
|
||
oFILE = fopen(job->outFile, "r");
|
||
if (oFILE != NULL) {
|
||
(void)fprintf(stdout, "Results of making %s:\n", job->node->name);
|
||
(void)fflush(stdout);
|
||
while (fgets(inLine, sizeof(inLine), oFILE) != NULL) {
|
||
char *cp, *endp, *oendp;
|
||
|
||
cp = inLine;
|
||
oendp = endp = inLine + strlen(inLine);
|
||
if (endp[-1] == '\n') {
|
||
*--endp = '\0';
|
||
}
|
||
cp = JobOutput(job, inLine, endp, FALSE);
|
||
|
||
/*
|
||
* There's still more in that thar buffer. This time, though,
|
||
* we know there's no newline at the end, so we add one of
|
||
* our own free will.
|
||
*/
|
||
(void)fprintf(stdout, "%s", cp);
|
||
(void)fflush(stdout);
|
||
if (endp != oendp) {
|
||
(void)fprintf(stdout, "\n");
|
||
(void)fflush(stdout);
|
||
}
|
||
}
|
||
(void)fclose(oFILE);
|
||
(void)eunlink(job->outFile);
|
||
} else {
|
||
Punt("Cannot open `%s'", job->outFile);
|
||
}
|
||
}
|
||
}
|
||
|
||
static void
|
||
JobRun(GNode *targ)
|
||
{
|
||
#ifdef notyet
|
||
/*
|
||
* Unfortunately it is too complicated to run .BEGIN, .END,
|
||
* and .INTERRUPT job in the parallel job module. This has
|
||
* the nice side effect that it avoids a lot of other problems.
|
||
*/
|
||
Lst lst = Lst_Init(FALSE);
|
||
Lst_AtEnd(lst, targ);
|
||
(void)Make_Run(lst);
|
||
Lst_Destroy(lst, NOFREE);
|
||
JobStart(targ, JOB_SPECIAL, NULL);
|
||
while (nJobs) {
|
||
Job_CatchOutput();
|
||
#ifndef RMT_WILL_WATCH
|
||
Job_CatchChildren(!usePipes);
|
||
#endif /* RMT_WILL_WATCH */
|
||
}
|
||
#else
|
||
Compat_Make(targ, targ);
|
||
if (targ->made == ERROR) {
|
||
PrintOnError("\n\nStop.");
|
||
exit(1);
|
||
}
|
||
#endif
|
||
}
|
||
|
||
/*-
|
||
*-----------------------------------------------------------------------
|
||
* Job_CatchChildren --
|
||
* Handle the exit of a child. Called from Make_Make.
|
||
*
|
||
* Input:
|
||
* block TRUE if should block on the wait
|
||
*
|
||
* Results:
|
||
* none.
|
||
*
|
||
* Side Effects:
|
||
* The job descriptor is removed from the list of children.
|
||
*
|
||
* Notes:
|
||
* We do waits, blocking or not, according to the wisdom of our
|
||
* caller, until there are no more children to report. For each
|
||
* job, call JobFinish to finish things off. This will take care of
|
||
* putting jobs on the stoppedJobs queue.
|
||
*
|
||
*-----------------------------------------------------------------------
|
||
*/
|
||
void
|
||
Job_CatchChildren(Boolean block)
|
||
{
|
||
int pid; /* pid of dead child */
|
||
Job *job; /* job descriptor for dead child */
|
||
LstNode jnode; /* list element for finding job */
|
||
int status; /* Exit/termination status */
|
||
|
||
/*
|
||
* Don't even bother if we know there's no one around.
|
||
*/
|
||
if (nLocal == 0) {
|
||
return;
|
||
}
|
||
|
||
while ((pid = waitpid((pid_t) -1, &status,
|
||
(block?0:WNOHANG)|WUNTRACED)) > 0)
|
||
{
|
||
if (DEBUG(JOB)) {
|
||
(void)fprintf(stdout, "Process %d exited or stopped %x.\n", pid,
|
||
status);
|
||
(void)fflush(stdout);
|
||
}
|
||
|
||
jnode = Lst_Find(jobs, (ClientData)&pid, JobCmpPid);
|
||
if (jnode == NILLNODE) {
|
||
if (WIFSTOPPED(status) && (WSTOPSIG(status) == SIGCONT)) {
|
||
jnode = Lst_Find(stoppedJobs, (ClientData) &pid, JobCmpPid);
|
||
if (jnode == NILLNODE) {
|
||
Error("Resumed child (%d) not in table", pid);
|
||
continue;
|
||
}
|
||
job = (Job *)Lst_Datum(jnode);
|
||
(void)Lst_Remove(stoppedJobs, jnode);
|
||
} else {
|
||
Error("Child (%d) not in table?", pid);
|
||
continue;
|
||
}
|
||
} else {
|
||
job = (Job *)Lst_Datum(jnode);
|
||
(void)Lst_Remove(jobs, jnode);
|
||
nJobs -= 1;
|
||
#ifdef REMOTE
|
||
if (!(job->flags & JOB_REMOTE)) {
|
||
if (DEBUG(JOB)) {
|
||
(void)fprintf(stdout,
|
||
"Job queue has one fewer local process.\n");
|
||
(void)fflush(stdout);
|
||
}
|
||
nLocal -= 1;
|
||
}
|
||
#else
|
||
nLocal -= 1;
|
||
#endif
|
||
}
|
||
|
||
JobFinish(job, &status);
|
||
}
|
||
}
|
||
|
||
/*-
|
||
*-----------------------------------------------------------------------
|
||
* Job_CatchOutput --
|
||
* Catch the output from our children, if we're using
|
||
* pipes do so. Otherwise just block time until we get a
|
||
* signal(most likely a SIGCHLD) since there's no point in
|
||
* just spinning when there's nothing to do and the reaping
|
||
* of a child can wait for a while.
|
||
*
|
||
* Results:
|
||
* None
|
||
*
|
||
* Side Effects:
|
||
* Output is read from pipes if we're piping.
|
||
* -----------------------------------------------------------------------
|
||
*/
|
||
void
|
||
Job_CatchOutput(void)
|
||
{
|
||
int nready;
|
||
LstNode ln;
|
||
Job *job;
|
||
#ifdef RMT_WILL_WATCH
|
||
int pnJobs; /* Previous nJobs */
|
||
#endif
|
||
|
||
(void)fflush(stdout);
|
||
Job_TokenFlush();
|
||
#ifdef RMT_WILL_WATCH
|
||
pnJobs = nJobs;
|
||
|
||
/*
|
||
* It is possible for us to be called with nJobs equal to 0. This happens
|
||
* if all the jobs finish and a job that is stopped cannot be run
|
||
* locally (eg if maxLocal is 0) and cannot be exported. The job will
|
||
* be placed back on the stoppedJobs queue, Job_Empty() will return false,
|
||
* Make_Run will call us again when there's nothing for which to wait.
|
||
* nJobs never changes, so we loop forever. Hence the check. It could
|
||
* be argued that we should sleep for a bit so as not to swamp the
|
||
* exportation system with requests. Perhaps we should.
|
||
*
|
||
* NOTE: IT IS THE RESPONSIBILITY OF Rmt_Wait TO CALL Job_CatchChildren
|
||
* IN A TIMELY FASHION TO CATCH ANY LOCALLY RUNNING JOBS THAT EXIT.
|
||
* It may use the variable nLocal to determine if it needs to call
|
||
* Job_CatchChildren(if nLocal is 0, there's nothing for which to
|
||
* wait...)
|
||
*/
|
||
while (nJobs != 0 && pnJobs == nJobs) {
|
||
Rmt_Wait();
|
||
}
|
||
#else
|
||
if (usePipes) {
|
||
if ((nready = poll((wantToken ? fds : (fds + 1)),
|
||
(wantToken ? nfds : (nfds - 1)), POLL_MSEC)) <= 0) {
|
||
return;
|
||
} else {
|
||
sigset_t mask;
|
||
JobSigLock(&mask);
|
||
if (Lst_Open(jobs) == FAILURE) {
|
||
Punt("Cannot open job table");
|
||
}
|
||
|
||
if (readyfd(&childExitJob)) {
|
||
char token;
|
||
(void)read(childExitJob.inPipe, &token, 1);
|
||
nready -= 1;
|
||
}
|
||
|
||
while (nready && (ln = Lst_Next(jobs)) != NILLNODE) {
|
||
job = (Job *)Lst_Datum(ln);
|
||
if (readyfd(job)) {
|
||
JobDoOutput(job, FALSE);
|
||
nready -= 1;
|
||
}
|
||
}
|
||
Lst_Close(jobs);
|
||
JobSigUnlock(&mask);
|
||
}
|
||
}
|
||
#endif /* RMT_WILL_WATCH */
|
||
}
|
||
|
||
/*-
|
||
*-----------------------------------------------------------------------
|
||
* Job_Make --
|
||
* Start the creation of a target. Basically a front-end for
|
||
* JobStart used by the Make module.
|
||
*
|
||
* Results:
|
||
* None.
|
||
*
|
||
* Side Effects:
|
||
* Another job is started.
|
||
*
|
||
*-----------------------------------------------------------------------
|
||
*/
|
||
void
|
||
Job_Make(GNode *gn)
|
||
{
|
||
(void)JobStart(gn, 0, NULL);
|
||
}
|
||
|
||
void
|
||
Shell_Init()
|
||
{
|
||
if (shellPath == NULL) {
|
||
/*
|
||
* The user didn't specify a shell to use, so we are using the
|
||
* default one... Both the absolute path and the last component
|
||
* must be set. The last component is taken from the 'name' field
|
||
* of the default shell description pointed-to by commandShell.
|
||
* All default shells are located in _PATH_DEFSHELLDIR.
|
||
*/
|
||
shellName = commandShell->name;
|
||
shellPath = str_concat(_PATH_DEFSHELLDIR, shellName, STR_ADDSLASH);
|
||
}
|
||
if (commandShell->exit == NULL) {
|
||
commandShell->exit = "";
|
||
}
|
||
if (commandShell->echo == NULL) {
|
||
commandShell->echo = "";
|
||
}
|
||
}
|
||
|
||
/*-
|
||
*-----------------------------------------------------------------------
|
||
* Job_Init --
|
||
* Initialize the process module
|
||
*
|
||
* Input:
|
||
* maxproc the greatest number of jobs which may be running
|
||
* at one time
|
||
* maxlocal the greatest number of jobs which may be running
|
||
* at once
|
||
*
|
||
* Results:
|
||
* none
|
||
*
|
||
* Side Effects:
|
||
* lists and counters are initialized
|
||
*-----------------------------------------------------------------------
|
||
*/
|
||
void
|
||
Job_Init(int maxproc, int maxlocal)
|
||
{
|
||
GNode *begin; /* node for commands to do at the very start */
|
||
|
||
jobs = Lst_Init(FALSE);
|
||
stoppedJobs = Lst_Init(FALSE);
|
||
maxJobs = maxproc;
|
||
maxLocal = maxlocal;
|
||
nJobs = 0;
|
||
nLocal = 0;
|
||
wantToken = FALSE;
|
||
|
||
aborting = 0;
|
||
errors = 0;
|
||
|
||
lastNode = NILGNODE;
|
||
|
||
if (maxJobs == 1
|
||
#ifdef REMOTE
|
||
|| noMessages
|
||
#endif
|
||
) {
|
||
/*
|
||
* If only one job can run at a time, there's no need for a banner,
|
||
* is there?
|
||
*/
|
||
targFmt = "";
|
||
} else {
|
||
targFmt = TARG_FMT;
|
||
}
|
||
|
||
Shell_Init();
|
||
|
||
if (pipe(exit_pipe) < 0)
|
||
Fatal("error in pipe: %s", strerror(errno));
|
||
fcntl(exit_pipe[0], F_SETFD, 1);
|
||
fcntl(exit_pipe[1], F_SETFD, 1);
|
||
|
||
childExitJob.inPipe = exit_pipe[0];
|
||
|
||
sigemptyset(&caught_signals);
|
||
/*
|
||
* Install a SIGCHLD handler.
|
||
*/
|
||
(void)signal(SIGCHLD, JobChildSig);
|
||
sigaddset(&caught_signals, SIGCHLD);
|
||
|
||
#define ADDSIG(s,h) \
|
||
if (signal(s, SIG_IGN) != SIG_IGN) { \
|
||
sigaddset(&caught_signals, s); \
|
||
(void)signal(s, h); \
|
||
}
|
||
|
||
/*
|
||
* Catch the four signals that POSIX specifies if they aren't ignored.
|
||
* JobPassSig will take care of calling JobInterrupt if appropriate.
|
||
*/
|
||
ADDSIG(SIGINT, JobPassSig)
|
||
ADDSIG(SIGHUP, JobPassSig)
|
||
ADDSIG(SIGTERM, JobPassSig)
|
||
ADDSIG(SIGQUIT, JobPassSig)
|
||
|
||
/*
|
||
* There are additional signals that need to be caught and passed if
|
||
* either the export system wants to be told directly of signals or if
|
||
* we're giving each job its own process group (since then it won't get
|
||
* signals from the terminal driver as we own the terminal)
|
||
*/
|
||
#if defined(RMT_WANTS_SIGNALS) || defined(USE_PGRP)
|
||
ADDSIG(SIGTSTP, JobPassSig)
|
||
ADDSIG(SIGTTOU, JobPassSig)
|
||
ADDSIG(SIGTTIN, JobPassSig)
|
||
ADDSIG(SIGWINCH, JobPassSig)
|
||
ADDSIG(SIGCONT, JobContinueSig)
|
||
#endif
|
||
#undef ADDSIG
|
||
|
||
begin = Targ_FindNode(".BEGIN", TARG_NOCREATE);
|
||
|
||
if (begin != NILGNODE) {
|
||
JobRun(begin);
|
||
if (begin->made == ERROR) {
|
||
PrintOnError("\n\nStop.");
|
||
exit(1);
|
||
}
|
||
}
|
||
postCommands = Targ_FindNode(".END", TARG_CREATE);
|
||
}
|
||
|
||
static void JobSigReset(void)
|
||
{
|
||
#define DELSIG(s) \
|
||
if (sigismember(&caught_signals, s)) { \
|
||
(void)signal(SIGINT, SIG_DFL); \
|
||
}
|
||
|
||
DELSIG(SIGINT)
|
||
DELSIG(SIGHUP)
|
||
DELSIG(SIGQUIT)
|
||
DELSIG(SIGTERM)
|
||
#if defined(RMT_WANTS_SIGNALS) || defined(USE_PGRP)
|
||
DELSIG(SIGTSTP)
|
||
DELSIG(SIGTTOU)
|
||
DELSIG(SIGTTIN)
|
||
DELSIG(SIGWINCH)
|
||
DELSIG(SIGCONT)
|
||
#endif
|
||
#undef DELSIG
|
||
(void)signal(SIGCHLD, SIG_DFL);
|
||
}
|
||
|
||
/*-
|
||
*-----------------------------------------------------------------------
|
||
* Job_Empty --
|
||
* See if the job table is empty. Because the local concurrency may
|
||
* be set to 0, it is possible for the job table to become empty,
|
||
* while the list of stoppedJobs remains non-empty. In such a case,
|
||
* we want to restart as many jobs as we can.
|
||
*
|
||
* Results:
|
||
* TRUE if it is. FALSE if it ain't.
|
||
*
|
||
* Side Effects:
|
||
* None.
|
||
*
|
||
* -----------------------------------------------------------------------
|
||
*/
|
||
Boolean
|
||
Job_Empty(void)
|
||
{
|
||
if (nJobs == 0) {
|
||
if (!Lst_IsEmpty(stoppedJobs) && !aborting) {
|
||
/*
|
||
* The job table is obviously not full if it has no jobs in
|
||
* it...Try and restart the stopped jobs.
|
||
*/
|
||
JobRestartJobs();
|
||
return(FALSE);
|
||
} else {
|
||
return(TRUE);
|
||
}
|
||
} else {
|
||
return(FALSE);
|
||
}
|
||
}
|
||
|
||
/*-
|
||
*-----------------------------------------------------------------------
|
||
* JobMatchShell --
|
||
* Find a shell in 'shells' given its name.
|
||
*
|
||
* Results:
|
||
* A pointer to the Shell structure.
|
||
*
|
||
* Side Effects:
|
||
* None.
|
||
*
|
||
*-----------------------------------------------------------------------
|
||
*/
|
||
static Shell *
|
||
JobMatchShell(const char *name)
|
||
{
|
||
Shell *sh;
|
||
|
||
for (sh = shells; sh->name != NULL; sh++) {
|
||
if (strcmp(name, sh->name) == 0)
|
||
return (sh);
|
||
}
|
||
return (NULL);
|
||
}
|
||
|
||
/*-
|
||
*-----------------------------------------------------------------------
|
||
* Job_ParseShell --
|
||
* Parse a shell specification and set up commandShell, shellPath
|
||
* and shellName appropriately.
|
||
*
|
||
* Input:
|
||
* line The shell spec
|
||
*
|
||
* Results:
|
||
* FAILURE if the specification was incorrect.
|
||
*
|
||
* Side Effects:
|
||
* commandShell points to a Shell structure (either predefined or
|
||
* created from the shell spec), shellPath is the full path of the
|
||
* shell described by commandShell, while shellName is just the
|
||
* final component of shellPath.
|
||
*
|
||
* Notes:
|
||
* A shell specification consists of a .SHELL target, with dependency
|
||
* operator, followed by a series of blank-separated words. Double
|
||
* quotes can be used to use blanks in words. A backslash escapes
|
||
* anything (most notably a double-quote and a space) and
|
||
* provides the functionality it does in C. Each word consists of
|
||
* keyword and value separated by an equal sign. There should be no
|
||
* unnecessary spaces in the word. The keywords are as follows:
|
||
* name Name of shell.
|
||
* path Location of shell.
|
||
* quiet Command to turn off echoing.
|
||
* echo Command to turn echoing on
|
||
* filter Result of turning off echoing that shouldn't be
|
||
* printed.
|
||
* echoFlag Flag to turn echoing on at the start
|
||
* errFlag Flag to turn error checking on at the start
|
||
* hasErrCtl True if shell has error checking control
|
||
* check Command to turn on error checking if hasErrCtl
|
||
* is TRUE or template of command to echo a command
|
||
* for which error checking is off if hasErrCtl is
|
||
* FALSE.
|
||
* ignore Command to turn off error checking if hasErrCtl
|
||
* is TRUE or template of command to execute a
|
||
* command so as to ignore any errors it returns if
|
||
* hasErrCtl is FALSE.
|
||
*
|
||
*-----------------------------------------------------------------------
|
||
*/
|
||
ReturnStatus
|
||
Job_ParseShell(char *line)
|
||
{
|
||
char **words;
|
||
char **argv;
|
||
int argc;
|
||
char *path;
|
||
Shell newShell;
|
||
Boolean fullSpec = FALSE;
|
||
Shell *sh;
|
||
|
||
while (isspace((unsigned char)*line)) {
|
||
line++;
|
||
}
|
||
|
||
if (shellArgv)
|
||
free(UNCONST(shellArgv));
|
||
|
||
memset(&newShell, 0, sizeof(newShell));
|
||
|
||
/*
|
||
* Parse the specification by keyword
|
||
*/
|
||
words = brk_string(line, &argc, TRUE, &path);
|
||
shellArgv = path;
|
||
|
||
for (path = NULL, argv = words; argc != 0; argc--, argv++) {
|
||
if (strncmp(*argv, "path=", 5) == 0) {
|
||
path = &argv[0][5];
|
||
} else if (strncmp(*argv, "name=", 5) == 0) {
|
||
newShell.name = &argv[0][5];
|
||
} else {
|
||
if (strncmp(*argv, "quiet=", 6) == 0) {
|
||
newShell.echoOff = &argv[0][6];
|
||
} else if (strncmp(*argv, "echo=", 5) == 0) {
|
||
newShell.echoOn = &argv[0][5];
|
||
} else if (strncmp(*argv, "filter=", 7) == 0) {
|
||
newShell.noPrint = &argv[0][7];
|
||
newShell.noPLen = strlen(newShell.noPrint);
|
||
} else if (strncmp(*argv, "echoFlag=", 9) == 0) {
|
||
newShell.echo = &argv[0][9];
|
||
} else if (strncmp(*argv, "errFlag=", 8) == 0) {
|
||
newShell.exit = &argv[0][8];
|
||
} else if (strncmp(*argv, "hasErrCtl=", 10) == 0) {
|
||
char c = argv[0][10];
|
||
newShell.hasErrCtl = !((c != 'Y') && (c != 'y') &&
|
||
(c != 'T') && (c != 't'));
|
||
} else if (strncmp(*argv, "check=", 6) == 0) {
|
||
newShell.errCheck = &argv[0][6];
|
||
} else if (strncmp(*argv, "ignore=", 7) == 0) {
|
||
newShell.ignErr = &argv[0][7];
|
||
} else if (strncmp(*argv, "errout=", 7) == 0) {
|
||
newShell.errOut = &argv[0][7];
|
||
} else if (strncmp(*argv, "comment=", 8) == 0) {
|
||
newShell.commentChar = argv[0][8];
|
||
} else {
|
||
Parse_Error(PARSE_FATAL, "Unknown keyword \"%s\"",
|
||
*argv);
|
||
free(words);
|
||
return(FAILURE);
|
||
}
|
||
fullSpec = TRUE;
|
||
}
|
||
}
|
||
|
||
if (path == NULL) {
|
||
/*
|
||
* If no path was given, the user wants one of the pre-defined shells,
|
||
* yes? So we find the one s/he wants with the help of JobMatchShell
|
||
* and set things up the right way. shellPath will be set up by
|
||
* Job_Init.
|
||
*/
|
||
if (newShell.name == NULL) {
|
||
Parse_Error(PARSE_FATAL, "Neither path nor name specified");
|
||
free(words);
|
||
return(FAILURE);
|
||
} else {
|
||
if ((sh = JobMatchShell(newShell.name)) == NULL) {
|
||
Parse_Error(PARSE_WARNING, "%s: No matching shell",
|
||
newShell.name);
|
||
free(words);
|
||
return(FAILURE);
|
||
}
|
||
commandShell = sh;
|
||
shellName = newShell.name;
|
||
}
|
||
} else {
|
||
/*
|
||
* The user provided a path. If s/he gave nothing else (fullSpec is
|
||
* FALSE), try and find a matching shell in the ones we know of.
|
||
* Else we just take the specification at its word and copy it
|
||
* to a new location. In either case, we need to record the
|
||
* path the user gave for the shell.
|
||
*/
|
||
shellPath = path;
|
||
path = strrchr(path, '/');
|
||
if (path == NULL) {
|
||
path = UNCONST(shellPath);
|
||
} else {
|
||
path += 1;
|
||
}
|
||
if (newShell.name != NULL) {
|
||
shellName = newShell.name;
|
||
} else {
|
||
shellName = path;
|
||
}
|
||
if (!fullSpec) {
|
||
if ((sh = JobMatchShell(shellName)) == NULL) {
|
||
Parse_Error(PARSE_WARNING, "%s: No matching shell",
|
||
shellName);
|
||
free(words);
|
||
return(FAILURE);
|
||
}
|
||
commandShell = sh;
|
||
} else {
|
||
commandShell = emalloc(sizeof(Shell));
|
||
*commandShell = newShell;
|
||
}
|
||
}
|
||
|
||
if (commandShell->echoOn && commandShell->echoOff) {
|
||
commandShell->hasEchoCtl = TRUE;
|
||
}
|
||
|
||
if (!commandShell->hasErrCtl) {
|
||
if (commandShell->errCheck == NULL) {
|
||
commandShell->errCheck = "";
|
||
}
|
||
if (commandShell->ignErr == NULL) {
|
||
commandShell->ignErr = "%s\n";
|
||
}
|
||
}
|
||
|
||
/*
|
||
* Do not free up the words themselves, since they might be in use by the
|
||
* shell specification.
|
||
*/
|
||
free(words);
|
||
return SUCCESS;
|
||
}
|
||
|
||
/*-
|
||
*-----------------------------------------------------------------------
|
||
* JobInterrupt --
|
||
* Handle the receipt of an interrupt.
|
||
*
|
||
* Input:
|
||
* runINTERRUPT Non-zero if commands for the .INTERRUPT target
|
||
* should be executed
|
||
* signo signal received
|
||
*
|
||
* Results:
|
||
* None
|
||
*
|
||
* Side Effects:
|
||
* All children are killed. Another job will be started if the
|
||
* .INTERRUPT target was given.
|
||
*-----------------------------------------------------------------------
|
||
*/
|
||
static void
|
||
JobInterrupt(int runINTERRUPT, int signo)
|
||
{
|
||
LstNode ln; /* element in job table */
|
||
Job *job; /* job descriptor in that element */
|
||
GNode *interrupt; /* the node describing the .INTERRUPT target */
|
||
sigset_t mask;
|
||
|
||
aborting = ABORT_INTERRUPT;
|
||
|
||
JobSigLock(&mask);
|
||
|
||
(void)Lst_Open(jobs);
|
||
while ((ln = Lst_Next(jobs)) != NILLNODE) {
|
||
GNode *gn;
|
||
|
||
job = (Job *)Lst_Datum(ln);
|
||
gn = job->node;
|
||
|
||
if ((gn->type & (OP_JOIN|OP_PHONY)) == 0 && !Targ_Precious(gn)) {
|
||
char *file = (gn->path == NULL ? gn->name : gn->path);
|
||
if (!noExecute && eunlink(file) != -1) {
|
||
Error("*** %s removed", file);
|
||
}
|
||
}
|
||
#ifdef RMT_WANTS_SIGNALS
|
||
if (job->flags & JOB_REMOTE) {
|
||
/*
|
||
* If job is remote, let the Rmt module do the killing.
|
||
*/
|
||
if (!Rmt_Signal(job, signo)) {
|
||
/*
|
||
* If couldn't kill the thing, finish it out now with an
|
||
* error code, since no exit report will come in likely.
|
||
*/
|
||
int status;
|
||
|
||
status.w_status = 0;
|
||
status.w_retcode = 1;
|
||
JobFinish(job, &status);
|
||
}
|
||
} else if (job->pid) {
|
||
KILL(job->pid, signo);
|
||
}
|
||
#else
|
||
if (job->pid) {
|
||
if (DEBUG(JOB)) {
|
||
(void)fprintf(stdout,
|
||
"JobInterrupt passing signal %d to child %d.\n",
|
||
signo, job->pid);
|
||
(void)fflush(stdout);
|
||
}
|
||
KILL(job->pid, signo);
|
||
}
|
||
#endif /* RMT_WANTS_SIGNALS */
|
||
}
|
||
Lst_Close(jobs);
|
||
|
||
#ifdef REMOTE
|
||
(void)Lst_Open(stoppedJobs);
|
||
while ((ln = Lst_Next(stoppedJobs)) != NILLNODE) {
|
||
GNode *gn;
|
||
|
||
job = (Job *)Lst_Datum(ln);
|
||
gn = job->node;
|
||
|
||
if (job->flags & JOB_RESTART) {
|
||
if (DEBUG(JOB)) {
|
||
(void)fprintf(stdout, "%s%s",
|
||
"JobInterrupt skipping job on stopped queue",
|
||
"-- it was waiting to be restarted.\n");
|
||
(void)fflush(stdout);
|
||
}
|
||
continue;
|
||
}
|
||
if ((gn->type & (OP_JOIN|OP_PHONY)) == 0 && !Targ_Precious(gn)) {
|
||
char *file = (gn->path == NULL ? gn->name : gn->path);
|
||
if (eunlink(file) == 0) {
|
||
Error("*** %s removed", file);
|
||
}
|
||
}
|
||
/*
|
||
* Resume the thing so it will take the signal.
|
||
*/
|
||
if (DEBUG(JOB)) {
|
||
(void)fprintf(stdout,
|
||
"JobInterrupt passing CONT to stopped child %d.\n",
|
||
job->pid);
|
||
(void)fflush(stdout);
|
||
}
|
||
KILL(job->pid, SIGCONT);
|
||
#ifdef RMT_WANTS_SIGNALS
|
||
if (job->flags & JOB_REMOTE) {
|
||
/*
|
||
* If job is remote, let the Rmt module do the killing.
|
||
*/
|
||
if (!Rmt_Signal(job, SIGINT)) {
|
||
/*
|
||
* If couldn't kill the thing, finish it out now with an
|
||
* error code, since no exit report will come in likely.
|
||
*/
|
||
int status;
|
||
status.w_status = 0;
|
||
status.w_retcode = 1;
|
||
JobFinish(job, &status);
|
||
}
|
||
} else if (job->pid) {
|
||
if (DEBUG(JOB)) {
|
||
(void)fprintf(stdout,
|
||
"JobInterrupt passing interrupt to stopped child %d.\n",
|
||
job->pid);
|
||
(void)fflush(stdout);
|
||
}
|
||
KILL(job->pid, SIGINT);
|
||
}
|
||
#endif /* RMT_WANTS_SIGNALS */
|
||
}
|
||
Lst_Close(stoppedJobs);
|
||
#endif /* REMOTE */
|
||
|
||
JobSigUnlock(&mask);
|
||
|
||
if (runINTERRUPT && !touchFlag) {
|
||
interrupt = Targ_FindNode(".INTERRUPT", TARG_NOCREATE);
|
||
if (interrupt != NILGNODE) {
|
||
ignoreErrors = FALSE;
|
||
JobRun(interrupt);
|
||
}
|
||
}
|
||
Trace_Log(MAKEINTR, 0);
|
||
exit(signo);
|
||
}
|
||
|
||
/*
|
||
*-----------------------------------------------------------------------
|
||
* Job_Finish --
|
||
* Do final processing such as the running of the commands
|
||
* attached to the .END target.
|
||
*
|
||
* Results:
|
||
* Number of errors reported.
|
||
*
|
||
* Side Effects:
|
||
* None.
|
||
*-----------------------------------------------------------------------
|
||
*/
|
||
int
|
||
Job_Finish(void)
|
||
{
|
||
if (postCommands != NILGNODE && !Lst_IsEmpty(postCommands->commands)) {
|
||
if (errors) {
|
||
Error("Errors reported so .END ignored");
|
||
} else {
|
||
JobRun(postCommands);
|
||
}
|
||
}
|
||
Job_TokenFlush();
|
||
return(errors);
|
||
}
|
||
|
||
/*-
|
||
*-----------------------------------------------------------------------
|
||
* Job_End --
|
||
* Cleanup any memory used by the jobs module
|
||
*
|
||
* Results:
|
||
* None.
|
||
*
|
||
* Side Effects:
|
||
* Memory is freed
|
||
*-----------------------------------------------------------------------
|
||
*/
|
||
void
|
||
Job_End(void)
|
||
{
|
||
#ifdef CLEANUP
|
||
if (shellArgv)
|
||
free(shellArgv);
|
||
#endif
|
||
}
|
||
|
||
/*-
|
||
*-----------------------------------------------------------------------
|
||
* Job_Wait --
|
||
* Waits for all running jobs to finish and returns. Sets 'aborting'
|
||
* to ABORT_WAIT to prevent other jobs from starting.
|
||
*
|
||
* Results:
|
||
* None.
|
||
*
|
||
* Side Effects:
|
||
* Currently running jobs finish.
|
||
*
|
||
*-----------------------------------------------------------------------
|
||
*/
|
||
void
|
||
Job_Wait(void)
|
||
{
|
||
aborting = ABORT_WAIT;
|
||
while (nJobs != 0) {
|
||
Job_CatchOutput();
|
||
#ifndef RMT_WILL_WATCH
|
||
Job_CatchChildren(!usePipes);
|
||
#endif /* RMT_WILL_WATCH */
|
||
}
|
||
Job_TokenFlush();
|
||
aborting = 0;
|
||
}
|
||
|
||
/*-
|
||
*-----------------------------------------------------------------------
|
||
* Job_AbortAll --
|
||
* Abort all currently running jobs without handling output or anything.
|
||
* This function is to be called only in the event of a major
|
||
* error. Most definitely NOT to be called from JobInterrupt.
|
||
*
|
||
* Results:
|
||
* None
|
||
*
|
||
* Side Effects:
|
||
* All children are killed, not just the firstborn
|
||
*-----------------------------------------------------------------------
|
||
*/
|
||
void
|
||
Job_AbortAll(void)
|
||
{
|
||
LstNode ln; /* element in job table */
|
||
Job *job; /* the job descriptor in that element */
|
||
int foo;
|
||
sigset_t mask;
|
||
|
||
aborting = ABORT_ERROR;
|
||
|
||
if (nJobs) {
|
||
|
||
JobSigLock(&mask);
|
||
(void)Lst_Open(jobs);
|
||
while ((ln = Lst_Next(jobs)) != NILLNODE) {
|
||
job = (Job *)Lst_Datum(ln);
|
||
|
||
/*
|
||
* kill the child process with increasingly drastic signals to make
|
||
* darn sure it's dead.
|
||
*/
|
||
#ifdef RMT_WANTS_SIGNALS
|
||
if (job->flags & JOB_REMOTE) {
|
||
(void)Rmt_Signal(job, SIGINT);
|
||
(void)Rmt_Signal(job, SIGKILL);
|
||
} else {
|
||
KILL(job->pid, SIGINT);
|
||
KILL(job->pid, SIGKILL);
|
||
}
|
||
#else
|
||
KILL(job->pid, SIGINT);
|
||
KILL(job->pid, SIGKILL);
|
||
#endif /* RMT_WANTS_SIGNALS */
|
||
}
|
||
Lst_Close(jobs);
|
||
JobSigUnlock(&mask);
|
||
}
|
||
|
||
/*
|
||
* Catch as many children as want to report in at first, then give up
|
||
*/
|
||
while (waitpid((pid_t) -1, &foo, WNOHANG) > 0)
|
||
continue;
|
||
}
|
||
|
||
#ifdef REMOTE
|
||
/*-
|
||
*-----------------------------------------------------------------------
|
||
* JobFlagForMigration --
|
||
* Handle the eviction of a child. Called from RmtStatusChange.
|
||
* Flags the child as remigratable and then suspends it.
|
||
*
|
||
* Input:
|
||
* hostID ID of host we used, for matching children
|
||
*
|
||
* Results:
|
||
* none.
|
||
*
|
||
* Side Effects:
|
||
* The job descriptor is flagged for remigration.
|
||
*
|
||
*-----------------------------------------------------------------------
|
||
*/
|
||
void
|
||
JobFlagForMigration(int hostID)
|
||
{
|
||
Job *job; /* job descriptor for dead child */
|
||
LstNode jnode; /* list element for finding job */
|
||
|
||
if (DEBUG(JOB)) {
|
||
(void)fprintf(stdout, "JobFlagForMigration(%d) called.\n", hostID);
|
||
(void)fflush(stdout);
|
||
}
|
||
jnode = Lst_Find(jobs, (ClientData)&hostID, JobCmpRmtID);
|
||
|
||
if (jnode == NILLNODE) {
|
||
jnode = Lst_Find(stoppedJobs, (ClientData)hostID, JobCmpRmtID);
|
||
if (jnode == NILLNODE) {
|
||
if (DEBUG(JOB)) {
|
||
Error("Evicting host(%d) not in table", hostID);
|
||
}
|
||
return;
|
||
}
|
||
}
|
||
job = (Job *)Lst_Datum(jnode);
|
||
|
||
if (DEBUG(JOB)) {
|
||
(void)fprintf(stdout,
|
||
"JobFlagForMigration(%d) found job '%s'.\n", hostID,
|
||
job->node->name);
|
||
(void)fflush(stdout);
|
||
}
|
||
|
||
KILL(job->pid, SIGSTOP);
|
||
|
||
job->flags |= JOB_REMIGRATE;
|
||
}
|
||
|
||
#endif
|
||
|
||
/*-
|
||
*-----------------------------------------------------------------------
|
||
* JobRestartJobs --
|
||
* Tries to restart stopped jobs if there are slots available.
|
||
* Note that this tries to restart them regardless of pending errors.
|
||
* It's not good to leave stopped jobs lying around!
|
||
*
|
||
* Results:
|
||
* None.
|
||
*
|
||
* Side Effects:
|
||
* Resumes(and possibly migrates) jobs.
|
||
*
|
||
*-----------------------------------------------------------------------
|
||
*/
|
||
static void
|
||
JobRestartJobs(void)
|
||
{
|
||
sigset_t mask;
|
||
|
||
JobSigLock(&mask);
|
||
while (!Lst_IsEmpty(stoppedJobs)) {
|
||
if (DEBUG(JOB)) {
|
||
(void)fprintf(stdout, "Restarting a stopped job.\n");
|
||
(void)fflush(stdout);
|
||
}
|
||
if (JobRestart((Job *)Lst_DeQueue(stoppedJobs)) != 0)
|
||
break;
|
||
}
|
||
JobSigUnlock(&mask);
|
||
}
|
||
|
||
#ifndef RMT_WILL_WATCH
|
||
static void
|
||
watchfd(Job *job)
|
||
{
|
||
int i;
|
||
if (job->inPollfd != NULL)
|
||
Punt("Watching watched job");
|
||
if (fds == NULL) {
|
||
maxfds = JBSTART;
|
||
fds = emalloc(sizeof(struct pollfd) * maxfds);
|
||
jobfds = emalloc(sizeof(Job **) * maxfds);
|
||
|
||
fds[0].fd = job_pipe[0];
|
||
fds[0].events = POLLIN;
|
||
jobfds[0] = &tokenWaitJob;
|
||
tokenWaitJob.inPollfd = &fds[0];
|
||
nfds++;
|
||
|
||
fds[1].fd = exit_pipe[0];
|
||
fds[1].events = POLLIN;
|
||
jobfds[1] = &childExitJob;
|
||
childExitJob.inPollfd = &fds[1];
|
||
nfds++;
|
||
} else if (nfds == maxfds) {
|
||
maxfds *= JBFACTOR;
|
||
fds = erealloc(fds, sizeof(struct pollfd) * maxfds);
|
||
jobfds = erealloc(jobfds, sizeof(Job **) * maxfds);
|
||
for (i = 0; i < nfds; i++)
|
||
jobfds[i]->inPollfd = &fds[i];
|
||
}
|
||
|
||
fds[nfds].fd = job->inPipe;
|
||
fds[nfds].events = POLLIN;
|
||
jobfds[nfds] = job;
|
||
job->inPollfd = &fds[nfds];
|
||
nfds++;
|
||
}
|
||
|
||
static void
|
||
clearfd(Job *job)
|
||
{
|
||
int i;
|
||
if (job->inPollfd == NULL)
|
||
Punt("Unwatching unwatched job");
|
||
i = job->inPollfd - fds;
|
||
nfds--;
|
||
/*
|
||
* Move last job in table into hole made by dead job.
|
||
*/
|
||
if (nfds != i) {
|
||
fds[i] = fds[nfds];
|
||
jobfds[i] = jobfds[nfds];
|
||
jobfds[i]->inPollfd = &fds[i];
|
||
}
|
||
job->inPollfd = NULL;
|
||
}
|
||
|
||
static int
|
||
readyfd(Job *job)
|
||
{
|
||
if (job->inPollfd == NULL)
|
||
Punt("Polling unwatched job");
|
||
return (job->inPollfd->revents & POLLIN) != 0;
|
||
}
|
||
#endif
|
||
|
||
/*-
|
||
*-----------------------------------------------------------------------
|
||
* JobTokenAdd --
|
||
* Put a token into the job pipe so that some make process can start
|
||
* another job.
|
||
*
|
||
* Side Effects:
|
||
* Allows more build jobs to be spawned somewhere.
|
||
*
|
||
*-----------------------------------------------------------------------
|
||
*/
|
||
|
||
static void
|
||
JobTokenAdd(void)
|
||
{
|
||
|
||
if (DEBUG(JOB))
|
||
printf("deposit token\n");
|
||
write(job_pipe[1], "+", 1);
|
||
}
|
||
|
||
/*-
|
||
*-----------------------------------------------------------------------
|
||
* Job_ServerStartTokenAdd --
|
||
* Prep the job token pipe in the root make process.
|
||
*
|
||
*-----------------------------------------------------------------------
|
||
*/
|
||
|
||
void
|
||
Job_ServerStart(int maxproc)
|
||
{
|
||
int i, flags;
|
||
char jobarg[64];
|
||
|
||
if (pipe(job_pipe) < 0)
|
||
Fatal("error in pipe: %s", strerror(errno));
|
||
|
||
/*
|
||
* We mark the input side of the pipe non-blocking; we poll(2) the
|
||
* pipe when we're waiting for a job token, but we might lose the
|
||
* race for the token when a new one becomes available, so the read
|
||
* from the pipe should not block.
|
||
*/
|
||
flags = fcntl(job_pipe[0], F_GETFL, 0);
|
||
flags |= O_NONBLOCK;
|
||
fcntl(job_pipe[0], F_SETFL, flags);
|
||
|
||
/*
|
||
* Mark job pipes as close-on-exec.
|
||
* Note that we will clear this when executing submakes.
|
||
*/
|
||
fcntl(job_pipe[0], F_SETFD, 1);
|
||
fcntl(job_pipe[1], F_SETFD, 1);
|
||
|
||
snprintf(jobarg, sizeof(jobarg), "%d,%d", job_pipe[0], job_pipe[1]);
|
||
|
||
Var_Append(MAKEFLAGS, "-J", VAR_GLOBAL);
|
||
Var_Append(MAKEFLAGS, jobarg, VAR_GLOBAL);
|
||
|
||
/*
|
||
* Preload job_pipe with one token per job, save the one
|
||
* "extra" token for the primary job.
|
||
*
|
||
* XXX should clip maxJobs against PIPE_BUF -- if maxJobs is
|
||
* larger than the write buffer size of the pipe, we will
|
||
* deadlock here.
|
||
*/
|
||
for (i=1; i < maxproc; i++)
|
||
JobTokenAdd();
|
||
}
|
||
|
||
/*
|
||
* this tracks the number of tokens currently "out" to build jobs.
|
||
*/
|
||
int jobTokensRunning = 0;
|
||
int jobTokensFree = 0;
|
||
/*-
|
||
*-----------------------------------------------------------------------
|
||
* Job_TokenReturn --
|
||
* Return a withdrawn token to the pool.
|
||
*
|
||
*-----------------------------------------------------------------------
|
||
*/
|
||
|
||
void
|
||
Job_TokenReturn(void)
|
||
{
|
||
jobTokensRunning--;
|
||
if (jobTokensRunning < 0)
|
||
Punt("token botch");
|
||
if (jobTokensRunning)
|
||
jobTokensFree++;
|
||
}
|
||
|
||
/*-
|
||
*-----------------------------------------------------------------------
|
||
* Job_TokenWithdraw --
|
||
* Attempt to withdraw a token from the pool.
|
||
*
|
||
* Results:
|
||
* Returns TRUE if a token was withdrawn, and FALSE if the pool
|
||
* is currently empty.
|
||
*
|
||
* Side Effects:
|
||
* If pool is empty, set wantToken so that we wake up
|
||
* when a token is released.
|
||
*
|
||
*-----------------------------------------------------------------------
|
||
*/
|
||
|
||
|
||
Boolean
|
||
Job_TokenWithdraw(void)
|
||
{
|
||
char tok;
|
||
int count;
|
||
|
||
wantToken = FALSE;
|
||
|
||
if (aborting)
|
||
return FALSE;
|
||
|
||
if (jobTokensRunning == 0) {
|
||
if (DEBUG(JOB))
|
||
printf("first one's free\n");
|
||
jobTokensRunning++;
|
||
return TRUE;
|
||
}
|
||
if (jobTokensFree > 0) {
|
||
jobTokensFree--;
|
||
jobTokensRunning++;
|
||
return TRUE;
|
||
}
|
||
count = read(job_pipe[0], &tok, 1);
|
||
if (count == 0)
|
||
Fatal("eof on job pipe!");
|
||
else if (count < 0) {
|
||
if (errno != EAGAIN) {
|
||
Fatal("job pipe read: %s", strerror(errno));
|
||
}
|
||
if (DEBUG(JOB))
|
||
printf("blocked for token\n");
|
||
wantToken = TRUE;
|
||
return FALSE;
|
||
}
|
||
jobTokensRunning++;
|
||
if (DEBUG(JOB))
|
||
printf("withdrew token\n");
|
||
return TRUE;
|
||
}
|
||
|
||
/*-
|
||
*-----------------------------------------------------------------------
|
||
* Job_TokenFlush --
|
||
* Return free tokens to the pool.
|
||
*
|
||
*-----------------------------------------------------------------------
|
||
*/
|
||
|
||
void
|
||
Job_TokenFlush(void)
|
||
{
|
||
if (compatMake) return;
|
||
|
||
while (jobTokensFree > 0) {
|
||
JobTokenAdd();
|
||
jobTokensFree--;
|
||
}
|
||
}
|
||
|
||
#ifdef USE_SELECT
|
||
int
|
||
emul_poll(struct pollfd *fd, int nfd, int timeout)
|
||
{
|
||
fd_set rfds, wfds;
|
||
int i, maxfd, nselect, npoll;
|
||
struct timeval tv, *tvp;
|
||
long usecs;
|
||
|
||
FD_ZERO(&rfds);
|
||
FD_ZERO(&wfds);
|
||
|
||
maxfd = -1;
|
||
for (i = 0; i < nfd; i++) {
|
||
fd[i].revents = 0;
|
||
|
||
if (fd[i].events & POLLIN)
|
||
FD_SET(fd[i].fd, &rfds);
|
||
|
||
if (fd[i].events & POLLOUT)
|
||
FD_SET(fd[i].fd, &wfds);
|
||
|
||
if (fd[i].fd > maxfd)
|
||
maxfd = fd[i].fd;
|
||
}
|
||
|
||
if (maxfd >= FD_SETSIZE) {
|
||
Punt("Ran out of fd_set slots; "
|
||
"recompile with a larger FD_SETSIZE.");
|
||
}
|
||
|
||
if (timeout < 0) {
|
||
tvp = NULL;
|
||
} else {
|
||
usecs = timeout * 1000;
|
||
tv.tv_sec = usecs / 1000000;
|
||
tv.tv_usec = usecs % 1000000;
|
||
tvp = &tv;
|
||
}
|
||
|
||
nselect = select(maxfd + 1, &rfds, &wfds, 0, tvp);
|
||
|
||
if (nselect <= 0)
|
||
return nselect;
|
||
|
||
npoll = 0;
|
||
for (i = 0; i < nfd; i++) {
|
||
if (FD_ISSET(fd[i].fd, &rfds))
|
||
fd[i].revents |= POLLIN;
|
||
|
||
if (FD_ISSET(fd[i].fd, &wfds))
|
||
fd[i].revents |= POLLOUT;
|
||
|
||
if (fd[i].revents)
|
||
npoll++;
|
||
}
|
||
|
||
return npoll;
|
||
}
|
||
#endif /* USE_SELECT */
|