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do not call g_thread_init() for glib >= 2.31

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glib >= 2.31 always enables thread support and g_thread_supported()
is #defined to 1, there's no need to call g_thread_init() anymore,
and it definitely does not need to report error which never happens.
Keep code for old < 2.31 glibc anyway for now, just #ifdef it
differently.

Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Cc: qemu-trivial@nongnu.org
This commit is contained in:
Michael Tokarev 2014-05-02 18:35:55 +04:00
parent 69b15212d7
commit f33cc84dd4
2 changed files with 11 additions and 17 deletions
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7
coroutine-gthread.c
View file

@ -115,14 +115,11 @@ static inline GThread *create_thread(GThreadFunc func, gpointer data)
static void __attribute__((constructor)) coroutine_init(void)
{
if (!g_thread_supported()) {
#if !GLIB_CHECK_VERSION(2, 31, 0)
if (!g_thread_supported()) {
g_thread_init(NULL);
#else
fprintf(stderr, "glib threading failed to initialize.\n");
exit(1);
#endif
}
#endif
init_coroutine_cond();
}

21
util/osdep.c
View file

@ -436,23 +436,20 @@ int socket_init(void)
return 0;
}
/* Ensure that glib is running in multi-threaded mode */
#if !GLIB_CHECK_VERSION(2, 31, 0)
/* Ensure that glib is running in multi-threaded mode
* Old versions of glib require explicit initialization. Failure to do
* this results in the single-threaded code paths being taken inside
* glib. For example, the g_slice allocator will not be thread-safe
* and cause crashes.
*/
static void __attribute__((constructor)) thread_init(void)
{
if (!g_thread_supported()) {
#if !GLIB_CHECK_VERSION(2, 31, 0)
/* Old versions of glib require explicit initialization. Failure to do
* this results in the single-threaded code paths being taken inside
* glib. For example, the g_slice allocator will not be thread-safe
* and cause crashes.
*/
g_thread_init(NULL);
#else
fprintf(stderr, "glib threading failed to initialize.\n");
exit(1);
#endif
g_thread_init(NULL);
}
}
#endif
#ifndef CONFIG_IOVEC
/* helper function for iov_send_recv() */