[glib] thread: stop sharing g_once_mutex

[Ryan Lortie <ryanl src gnome org>]

commit d537726ded76eb470a78d41418579b8652c4ae8b
Author: Ryan Lortie <desrt desrt ca>
Date:   Wed Oct 12 21:47:25 2011 -0400

    thread: stop sharing g_once_mutex
    
    Unrelated code shouldn't be sharing the same mutex for no good reason --
    particularly not across a file boundary.

 glib/deprecated/gthread-deprecated.c |    9 +++++----
 glib/gthread.c                       |    2 +-
 glib/gthreadprivate.h                |    2 --
 3 files changed, 6 insertions(+), 7 deletions(-)
---
diff --git a/glib/deprecated/gthread-deprecated.c b/glib/deprecated/gthread-deprecated.c
index 1e99694..a52e08d 100644
--- a/glib/deprecated/gthread-deprecated.c
+++ b/glib/deprecated/gthread-deprecated.c
@@ -199,6 +199,7 @@ static GSList      *g_thread_all_threads = NULL;
 static GSList      *g_thread_free_indices = NULL;
 
 /* Protects g_thread_all_threads and g_thread_free_indices */
+G_LOCK_DEFINE_STATIC (g_static_mutex);
 G_LOCK_DEFINE_STATIC (g_thread);
 
 /* Misc. GThread functions {{{1 */
@@ -504,7 +505,7 @@ g_static_mutex_get_mutex_impl (GStaticMutex* mutex)
 
   if (!result)
     {
-      g_mutex_lock (&g_once_mutex);
+      G_LOCK (g_static_mutex);
 
       result = mutex->mutex;
       if (!result)
@@ -513,7 +514,7 @@ g_static_mutex_get_mutex_impl (GStaticMutex* mutex)
           g_atomic_pointer_set (&mutex->mutex, result);
         }
 
-      g_mutex_unlock (&g_once_mutex);
+      G_UNLOCK (g_static_mutex);
     }
 
   return result;
@@ -660,7 +661,7 @@ g_static_rec_mutex_get_rec_mutex_impl (GStaticRecMutex* mutex)
 
   if (!result)
     {
-      g_mutex_lock (&g_once_mutex);
+      G_LOCK (g_static_mutex);
 
       result = (GRecMutex *) mutex->mutex.mutex;
       if (!result)
@@ -670,7 +671,7 @@ g_static_rec_mutex_get_rec_mutex_impl (GStaticRecMutex* mutex)
           g_atomic_pointer_set (&mutex->mutex.mutex, result);
         }
 
-      g_mutex_unlock (&g_once_mutex);
+      G_UNLOCK (g_static_mutex);
     }
 
   return result;
diff --git a/glib/gthread.c b/glib/gthread.c
index 27cdc08..18db89f 100644
--- a/glib/gthread.c
+++ b/glib/gthread.c
@@ -468,7 +468,7 @@ g_thread_error_quark (void)
 
 /* Local Data {{{1 -------------------------------------------------------- */
 
-GMutex           g_once_mutex;
+static GMutex    g_once_mutex;
 static GCond     g_once_cond;
 static GSList   *g_once_init_list = NULL;
 
diff --git a/glib/gthreadprivate.h b/glib/gthreadprivate.h
index 3aebf72..5ade4a3 100644
--- a/glib/gthreadprivate.h
+++ b/glib/gthreadprivate.h
@@ -61,8 +61,6 @@ struct  _GRealThread
   GSystemThread system_thread;
 };
 
-G_GNUC_INTERNAL extern GMutex g_once_mutex;
-
 #ifdef G_OS_WIN32
 G_GNUC_INTERNAL void g_thread_DllMain (void);
 #endif