[src/trunk]: src/usr.bin/make Print -de error information when running multip...

[christos <christos%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/558e2b9f8f6c
branches:  trunk
changeset: 962019:558e2b9f8f6c
user:      christos <christos%NetBSD.org@localhost>
date:      Tue Apr 27 15:21:42 2021 +0000

description:
Print -de error information when running multiple jobs

Problem and patch description from https://reviews.freebsd.org/D29647:

When running `make -de` (without any -j flag) bmake prints which command
failed. However, when using the -j flag the -de flag is ignored. This can
make it rather difficult to determine which command failed in an very
parallel build (especially when combined with the -s flag to avoid
ridiculously large logfiles). For single-threaded builds we can combine
-s with -de to get the failed command but this does not work with -jN
(even with -j1). This patch prints the failed shell script with -de in the
multiple jobs mode as well.

>From Alexander Richardson @ FreeBSD

diffstat:

 usr.bin/make/job.c |  21 +++++++++++++++++++--
 1 files changed, 19 insertions(+), 2 deletions(-)

diffs (56 lines):

diff -r 688eaba20adc -r 558e2b9f8f6c usr.bin/make/job.c
--- a/usr.bin/make/job.c        Tue Apr 27 15:19:25 2021 +0000
+++ b/usr.bin/make/job.c        Tue Apr 27 15:21:42 2021 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: job.c,v 1.429 2021/04/16 16:49:27 rillig Exp $ */
+/*     $NetBSD: job.c,v 1.430 2021/04/27 15:21:42 christos Exp $       */
 
 /*
  * Copyright (c) 1988, 1989, 1990 The Regents of the University of California.
@@ -142,7 +142,7 @@
 #include "trace.h"
 
 /*     "@(#)job.c      8.2 (Berkeley) 3/19/94" */
-MAKE_RCSID("$NetBSD: job.c,v 1.429 2021/04/16 16:49:27 rillig Exp $");
+MAKE_RCSID("$NetBSD: job.c,v 1.430 2021/04/27 15:21:42 christos Exp $");
 
 /*
  * A shell defines how the commands are run.  All commands for a target are
@@ -1061,6 +1061,21 @@
 }
 
 static void
+DebugFailedJob(const Job *job)
+{
+       const ListNode *l;
+
+       if (!DEBUG(ERROR))
+               return;
+
+       debug_printf("\n*** Failed target:  %s\n*** Failed commands:\n",
+           job->node->name);
+       for (l = job->node->commands.first; l != NULL; l = l->next) {
+               debug_printf("\t%s\n", (const char *)l->datum);
+       }
+}
+
+static void
 JobFinishDoneExitedError(Job *job, int *inout_status)
 {
        SwitchOutputTo(job->node);
@@ -1071,6 +1086,7 @@
        }
 #endif
        if (!shouldDieQuietly(job->node, -1)) {
+               DebugFailedJob(job);
                (void)printf("*** [%s] Error code %d%s\n",
                    job->node->name, WEXITSTATUS(*inout_status),
                    job->ignerr ? " (ignored)" : "");
@@ -1103,6 +1119,7 @@
 JobFinishDoneSignaled(Job *job, int status)
 {
        SwitchOutputTo(job->node);
+       DebugFailedJob(job);
        (void)printf("*** [%s] Signal %d\n", job->node->name, WTERMSIG(status));
        if (deleteOnError)
                JobDeleteTarget(job->node);