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Diffstat (limited to '3rdparty/SDL2/src/thread/pthread/SDL_systls.c')
-rw-r--r--3rdparty/SDL2/src/thread/pthread/SDL_systls.c69
1 files changed, 69 insertions, 0 deletions
diff --git a/3rdparty/SDL2/src/thread/pthread/SDL_systls.c b/3rdparty/SDL2/src/thread/pthread/SDL_systls.c
new file mode 100644
index 00000000000..622ad029758
--- /dev/null
+++ b/3rdparty/SDL2/src/thread/pthread/SDL_systls.c
@@ -0,0 +1,69 @@
+/*
+ Simple DirectMedia Layer
+ Copyright (C) 1997-2016 Sam Lantinga <slouken@libsdl.org>
+
+ This software is provided 'as-is', without any express or implied
+ warranty. In no event will the authors be held liable for any damages
+ arising from the use of this software.
+
+ Permission is granted to anyone to use this software for any purpose,
+ including commercial applications, and to alter it and redistribute it
+ freely, subject to the following restrictions:
+
+ 1. The origin of this software must not be misrepresented; you must not
+ claim that you wrote the original software. If you use this software
+ in a product, an acknowledgment in the product documentation would be
+ appreciated but is not required.
+ 2. Altered source versions must be plainly marked as such, and must not be
+ misrepresented as being the original software.
+ 3. This notice may not be removed or altered from any source distribution.
+*/
+#include "../../SDL_internal.h"
+#include "SDL_thread.h"
+#include "../SDL_thread_c.h"
+
+#include <pthread.h>
+
+
+#define INVALID_PTHREAD_KEY ((pthread_key_t)-1)
+
+static pthread_key_t thread_local_storage = INVALID_PTHREAD_KEY;
+static SDL_bool generic_local_storage = SDL_FALSE;
+
+SDL_TLSData *
+SDL_SYS_GetTLSData()
+{
+ if (thread_local_storage == INVALID_PTHREAD_KEY && !generic_local_storage) {
+ static SDL_SpinLock lock;
+ SDL_AtomicLock(&lock);
+ if (thread_local_storage == INVALID_PTHREAD_KEY && !generic_local_storage) {
+ pthread_key_t storage;
+ if (pthread_key_create(&storage, NULL) == 0) {
+ SDL_MemoryBarrierRelease();
+ thread_local_storage = storage;
+ } else {
+ generic_local_storage = SDL_TRUE;
+ }
+ }
+ SDL_AtomicUnlock(&lock);
+ }
+ if (generic_local_storage) {
+ return SDL_Generic_GetTLSData();
+ }
+ SDL_MemoryBarrierAcquire();
+ return (SDL_TLSData *)pthread_getspecific(thread_local_storage);
+}
+
+int
+SDL_SYS_SetTLSData(SDL_TLSData *data)
+{
+ if (generic_local_storage) {
+ return SDL_Generic_SetTLSData(data);
+ }
+ if (pthread_setspecific(thread_local_storage, data) != 0) {
+ return SDL_SetError("pthread_setspecific() failed");
+ }
+ return 0;
+}
+
+/* vi: set ts=4 sw=4 expandtab: */