aboutsummaryrefslogtreecommitdiffstats
path: root/distrib/sdl-1.2.15/src/thread/pth/SDL_sysmutex.c
diff options
context:
space:
mode:
Diffstat (limited to 'distrib/sdl-1.2.15/src/thread/pth/SDL_sysmutex.c')
-rw-r--r--distrib/sdl-1.2.15/src/thread/pth/SDL_sysmutex.c87
1 files changed, 87 insertions, 0 deletions
diff --git a/distrib/sdl-1.2.15/src/thread/pth/SDL_sysmutex.c b/distrib/sdl-1.2.15/src/thread/pth/SDL_sysmutex.c
new file mode 100644
index 0000000..ca83b92
--- /dev/null
+++ b/distrib/sdl-1.2.15/src/thread/pth/SDL_sysmutex.c
@@ -0,0 +1,87 @@
+/*
+ SDL - Simple DirectMedia Layer
+ Copyright (C) 1997-2012 Sam Lantinga
+
+ This library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 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
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with this library; if not, write to the Free Software
+ Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+
+ Sam Lantinga
+ slouken@libsdl.org
+*/
+#include "SDL_config.h"
+
+/*
+ * GNU pth mutexes
+ *
+ * Patrice Mandin
+ */
+
+#include <pth.h>
+
+#include "SDL_mutex.h"
+#include "SDL_sysmutex_c.h"
+
+/* Create a mutex */
+SDL_mutex *SDL_CreateMutex(void)
+{
+ SDL_mutex *mutex;
+
+ /* Allocate mutex memory */
+ mutex = (SDL_mutex *)SDL_malloc(sizeof(*mutex));
+ if ( mutex ) {
+ /* Create the mutex, with initial value signaled */
+ if (!pth_mutex_init(&(mutex->mutexpth_p))) {
+ SDL_SetError("Couldn't create mutex");
+ SDL_free(mutex);
+ mutex = NULL;
+ }
+ } else {
+ SDL_OutOfMemory();
+ }
+ return(mutex);
+}
+
+/* Free the mutex */
+void SDL_DestroyMutex(SDL_mutex *mutex)
+{
+ if ( mutex ) {
+ SDL_free(mutex);
+ }
+}
+
+/* Lock the mutex */
+int SDL_mutexP(SDL_mutex *mutex)
+{
+ if ( mutex == NULL ) {
+ SDL_SetError("Passed a NULL mutex");
+ return -1;
+ }
+
+ pth_mutex_acquire(&(mutex->mutexpth_p), FALSE, NULL);
+
+ return(0);
+}
+
+/* Unlock the mutex */
+int SDL_mutexV(SDL_mutex *mutex)
+{
+ if ( mutex == NULL ) {
+ SDL_SetError("Passed a NULL mutex");
+ return -1;
+ }
+
+ pth_mutex_release(&(mutex->mutexpth_p));
+
+ return(0);
+}