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tools/gst-launch.c (main): Handle err == NULL. gst/gst.c (init_post, ensure_current_registry) (ensure_current_registr...

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Original commit message from CVS:
2006-07-08  Andy Wingo  <wingo@pobox.com>

* tools/gst-launch.c (main): Handle err == NULL.

* gst/gst.c (init_post, ensure_current_registry)
(ensure_current_registry_forking)
(ensure_current_registry_nonforking): Reduce #ifdef ratnest by
factoring out the registry scanning into separate functions. Don't
fork for the rescan is GST_REGISTRY_FORK=no; useful in debugging.
Better environment var name/interface suggestions accepted.
This commit is contained in:
Andy Wingo 2006-07-08 13:22:32 +00:00
parent ea60952f06
commit 2ef04375e6
4 changed files with 123 additions and 82 deletions
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11
ChangeLog
View file

@ -1,3 +1,14 @@
2006-07-08 Andy Wingo <wingo@pobox.com>
* tools/gst-launch.c (main): Handle err == NULL.
* gst/gst.c (init_post, ensure_current_registry)
(ensure_current_registry_forking)
(ensure_current_registry_nonforking): Reduce #ifdef ratnest by
factoring out the registry scanning into separate functions. Don't
fork for the rescan is GST_REGISTRY_FORK=no; useful in debugging.
Better environment var name/interface suggestions accepted.
2006-07-07 Tim-Philipp Müller <tim at centricular dot net>
* gst/gstobject.c: (gst_object_set_name_default),

185
gst/gst.c
View file

@ -634,6 +634,111 @@ scan_and_update_registry (GstRegistry * default_registry,
return TRUE;
}
static gboolean
ensure_current_registry_nonforking (GstRegistry * default_registry,
const gchar * registry_file)
{
/* fork() not available */
GST_DEBUG ("updating registry cache");
scan_and_update_registry (default_registry, registry_file, TRUE);
return TRUE;
}
#ifdef HAVE_FORK
static gboolean
ensure_current_registry_forking (GstRegistry * default_registry,
const gchar * registry_file)
{
pid_t pid;
/* We fork here, and let the child read and possibly rebuild the registry.
* After that, the parent will re-read the freshly generated registry. */
GST_DEBUG ("forking");
pid = fork ();
if (pid == -1) {
GST_ERROR ("Failed to fork()");
return FALSE;
}
if (pid == 0) {
gboolean res;
/* this is the child */
GST_DEBUG ("child reading registry cache");
res = scan_and_update_registry (default_registry, registry_file, TRUE);
_gst_registry_remove_cache_plugins (default_registry);
/* need to use _exit, so that any exit handlers registered don't
* bring down the main program */
GST_DEBUG ("child exiting: %s", (res) ? "SUCCESS" : "FAILURE");
_exit ((res) ? EXIT_SUCCESS : EXIT_FAILURE);
} else {
/* parent */
int status;
pid_t ret;
GST_DEBUG ("parent waiting on child");
ret = waitpid (pid, &status, 0);
GST_DEBUG ("parent done waiting on child");
if (ret == -1) {
GST_ERROR ("error during waitpid: %s", g_strerror (errno));
return FALSE;
}
if (!WIFEXITED (status)) {
GST_ERROR ("child did not exit normally, status: %d", status);
return FALSE;
}
GST_DEBUG ("child exited normally with return value %d",
WEXITSTATUS (status));
if (WEXITSTATUS (status) == EXIT_SUCCESS) {
GST_DEBUG ("parent reading registry cache");
gst_registry_xml_read_cache (default_registry, registry_file);
} else {
GST_DEBUG ("parent re-scanning registry");
scan_and_update_registry (default_registry, registry_file, FALSE);
}
}
return TRUE;
}
#endif /* HAVE_FORK */
static gboolean
ensure_current_registry (void)
{
char *registry_file;
GstRegistry *default_registry;
gboolean ret;
default_registry = gst_registry_get_default ();
registry_file = g_strdup (g_getenv ("GST_REGISTRY"));
if (registry_file == NULL) {
registry_file = g_build_filename (g_get_home_dir (),
".gstreamer-" GST_MAJORMINOR, "registry." HOST_CPU ".xml", NULL);
}
#ifdef HAVE_FORK
if (g_getenv ("GST_REGISTRY_FORK") == NULL
|| strcmp (g_getenv ("GST_REGISTRY_FORK"), "no") != 0) {
ret = ensure_current_registry_forking (default_registry, registry_file);
} else {
GST_DEBUG ("requested not to fork");
#endif /* HAVE_FORK */
ret = ensure_current_registry_nonforking (default_registry, registry_file);
#ifdef HAVE_FORK
}
#endif /* HAVE_FORK */
g_free (registry_file);
return ret;
}
#endif /* GST_DISABLE_REGISTRY */
/*
@ -689,86 +794,8 @@ init_post (void)
_gst_plugin_initialize ();
#ifndef GST_DISABLE_REGISTRY
{
char *registry_file;
GstRegistry *default_registry;
#ifdef HAVE_FORK
pid_t pid;
#endif
default_registry = gst_registry_get_default ();
registry_file = g_strdup (g_getenv ("GST_REGISTRY"));
if (registry_file == NULL) {
registry_file = g_build_filename (g_get_home_dir (),
".gstreamer-" GST_MAJORMINOR, "registry." HOST_CPU ".xml", NULL);
}
#ifdef HAVE_FORK
/* We fork here, and let the child read and possibly rebuild the registry.
* After that, the parent will re-read the freshly generated registry. */
GST_DEBUG ("forking");
pid = fork ();
if (pid == -1) {
GST_ERROR ("Failed to fork()");
g_free (registry_file);
if (!ensure_current_registry ())
return FALSE;
}
if (pid == 0) {
gboolean res;
/* this is the child */
GST_DEBUG ("child reading registry cache");
res = scan_and_update_registry (default_registry, registry_file, TRUE);
_gst_registry_remove_cache_plugins (default_registry);
g_free (registry_file);
/* need to use _exit, so that any exit handlers registered don't
* bring down the main program */
GST_DEBUG ("child exiting: %s", (res) ? "SUCCESS" : "FAILURE");
_exit ((res) ? EXIT_SUCCESS : EXIT_FAILURE);
} else {
/* parent */
int status;
pid_t ret;
GST_DEBUG ("parent waiting on child");
ret = waitpid (pid, &status, 0);
GST_DEBUG ("parent done waiting on child");
if (ret == -1) {
GST_ERROR ("error during waitpid: %s", g_strerror (errno));
return FALSE;
}
if (!WIFEXITED (status)) {
GST_ERROR ("child did not exit normally, status: %d", status);
return FALSE;
}
GST_DEBUG ("child exited normally with return value %d",
WEXITSTATUS (status));
if (WEXITSTATUS (status) == EXIT_SUCCESS) {
GST_DEBUG ("parent reading registry cache");
gst_registry_xml_read_cache (default_registry, registry_file);
} else {
GST_DEBUG ("parent re-scanning registry");
scan_and_update_registry (default_registry, registry_file, FALSE);
}
}
#else /* HAVE_FORK */
/* fork() not available */
GST_DEBUG ("updating registry cache");
scan_and_update_registry (default_registry, registry_file, TRUE);
#endif /* HAVE_FORK */
g_free (registry_file);
}
#endif /* GST_DISABLE_REGISTRY */
/* if we need to preload plugins */

3
tools/gst-launch.c
View file

@ -547,7 +547,10 @@ main (int argc, char *argv[])
g_option_context_add_main_entries (ctx, options, GETTEXT_PACKAGE);
g_option_context_add_group (ctx, gst_init_get_option_group ());
if (!g_option_context_parse (ctx, &argc, &argv, &err)) {
if (err)
g_print ("Error initializing: %s\n", GST_STR_NULL (err->message));
else
g_print ("Error initializing: Unknown error!\n");
exit (1);
}
g_option_context_free (ctx);

2
win32/common/config.h
View file

@ -175,7 +175,7 @@
#define HAVE_WIN32 1
/* Define host CPU */
#define HOST_CPU "i686"
#define HOST_CPU "powerpc"
/* library dir */
#ifdef _DEBUG