[glib] gtestutils: Ensure test subprocesses don't dump core

[Colin Walters <walters src gnome org>]

commit 714cbbea52f0d08b6a4a4588329128a5172e8e92
Author: Colin Walters <walters verbum org>
Date:   Mon May 20 14:31:48 2013 +0100

    gtestutils: Ensure test subprocesses don't dump core
    
    Since we expect them to crash, let's not spam the system
    core dump collection (systemd, abrt).  At the moment
    systemd is not very robust against programs crashing
    in loops.
    
    Instead of aborting, we exit(1).
    
    https://bugzilla.gnome.org/show_bug.cgi?id=700714

 glib/Makefile.am         |    1 +
 glib/gmessages-private.h |   35 +++++++++++++++++++++++++++++++++++
 glib/gmessages.c         |   27 ++++++++++++++++++++++++---
 glib/gtestutils.c        |   18 +++++++++++++++++-
 4 files changed, 77 insertions(+), 4 deletions(-)
---
diff --git a/glib/Makefile.am b/glib/Makefile.am
index 3707cb4..0744a6c 100644
--- a/glib/Makefile.am
+++ b/glib/Makefile.am
@@ -152,6 +152,7 @@ libglib_2_0_la_SOURCES =    \
        gmarkup.c               \
        gmem.c                  \
        gmessages.c             \
+       gmessages-private.h     \
        gmirroringtable.h       \
        gnode.c                 \
        goption.c               \
diff --git a/glib/gmessages-private.h b/glib/gmessages-private.h
new file mode 100644
index 0000000..1a592b9
--- /dev/null
+++ b/glib/gmessages-private.h
@@ -0,0 +1,35 @@
+/* gmain.h - the GLib Main loop
+ * Copyright (C) 1998-2000 Red Hat, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#ifndef __G_MESSAGES_PRIVATE_H__
+#define __G_MESSAGES_PRIVATE_H__
+
+#include <glib/gmessages.h>
+
+G_BEGIN_DECLS
+
+G_GNUC_INTERNAL void
+_g_log_set_exit_on_fatal (void);
+
+G_GNUC_INTERNAL void
+_g_log_abort (void) G_GNUC_NORETURN;
+
+G_END_DECLS
+
+#endif /* __G_MESSAGES_PRIVATE_H__ */
diff --git a/glib/gmessages.c b/glib/gmessages.c
index 6160bf5..daab0c4 100644
--- a/glib/gmessages.c
+++ b/glib/gmessages.c
@@ -59,7 +59,7 @@
 #include <locale.h>
 #include <errno.h>
 
-#include "gmessages.h"
+#include "gmessages-private.h"
 
 #include "glib-init.h"
 #include "gbacktrace.h"
@@ -238,12 +238,23 @@ static GLogDomain    *g_log_domains = NULL;
 static GPrintFunc     glib_print_func = NULL;
 static GPrintFunc     glib_printerr_func = NULL;
 static GPrivate       g_log_depth;
+static gboolean       exit_on_fatal;
 static GLogFunc       default_log_func = g_log_default_handler;
 static gpointer       default_log_data = NULL;
 static GTestLogFatalFunc fatal_log_func = NULL;
 static gpointer          fatal_log_data;
 
 /* --- functions --- */
+
+void
+_g_log_abort (void)
+{
+  if (exit_on_fatal)
+    _exit (1);
+  else
+    abort ();
+}
+
 #ifdef G_OS_WIN32
 #  include <windows.h>
 static gboolean win32_keep_fatal_message = FALSE;
@@ -955,7 +966,11 @@ g_logv (const gchar   *log_domain,
                 && !fatal_log_func (log_domain, test_level, msg, fatal_log_data);
             }
 
-         if ((test_level & G_LOG_FLAG_FATAL) && !masquerade_fatal)
+          if ((test_level & G_LOG_FLAG_FATAL) && exit_on_fatal)
+            {
+              _g_log_abort ();
+            }
+         else if ((test_level & G_LOG_FLAG_FATAL) && !masquerade_fatal)
             {
 #ifdef G_OS_WIN32
               if (win32_keep_fatal_message)
@@ -1060,7 +1075,7 @@ g_assert_warning (const char *log_domain,
         line, 
         pretty_function,
         expression);
-  abort ();
+  _g_log_abort ();
 }
 
 /**
@@ -1552,3 +1567,9 @@ g_printf_string_upper_bound (const gchar *format,
   gchar c;
   return _g_vsnprintf (&c, 1, format, args) + 1;
 }
+
+void
+_g_log_set_exit_on_fatal (void)
+{
+  exit_on_fatal = TRUE;
+}
diff --git a/glib/gtestutils.c b/glib/gtestutils.c
index 6e34f65..b5cb321 100644
--- a/glib/gtestutils.c
+++ b/glib/gtestutils.c
@@ -21,6 +21,7 @@
 #include "config.h"
 
 #include "gtestutils.h"
+#include "gmessages-private.h"
 #include "gfileutils.h"
 
 #include <sys/types.h>
@@ -36,6 +37,9 @@
 #ifdef HAVE_UNISTD_H
 #include <unistd.h>
 #endif
+#ifdef HAVE_SYS_RESOURCE_H
+#include <sys/resource.h>
+#endif
 #ifdef G_OS_WIN32
 #include <io.h>
 #include <windows.h>
@@ -54,6 +58,7 @@
 #include "gslice.h"
 #include "gspawn.h"
 #include "glib-private.h"
+#include "gmessages-private.h"
 
 
 /**
@@ -759,6 +764,17 @@ parse_args (gint    *argc_p,
       else if (strcmp ("--GTestSubprocess", argv[i]) == 0)
         {
           test_in_subprocess = TRUE;
+          /* We typically expect these child processes to crash, and some
+           * tests spawn a *lot* of them.  Avoid spamming system crash
+           * collection programs such as systemd-coredump and abrt.
+           */
+#ifdef HAVE_SYS_RESOURCE_H
+          {
+            struct rlimit limit = { 0, 0 };
+            (void) setrlimit (RLIMIT_CORE, &limit);
+          }
+#endif
+          _g_log_set_exit_on_fatal ();
           argv[i] = NULL;
         }
       else if (strcmp ("-p", argv[i]) == 0 || strncmp ("-p=", argv[i], 3) == 0)
@@ -2027,7 +2043,7 @@ g_assertion_message (const char     *domain,
 
   g_test_log (G_TEST_LOG_ERROR, s, NULL, 0, NULL);
   g_free (s);
-  abort();
+  _g_log_abort ();
 }
 
 void