Use atomic functions where appropriate

Also, rename atomic functions to be consistent with the rest of the
platform/threading functions, and move atomic functions to threading*
files rather than platform* files

libobs/util/platform-nix.c

@@ -116,13 +116,3 @@ int os_mkdir(const char *path)
 
 	return (errno == EEXIST) ? MKDIR_EXISTS : MKDIR_ERROR;
 }
-
-long atomic_inc_long(volatile long *val)
-{
-	return __sync_fetch_and_add(val, 1);
-}
-
-long atomic_dec_long(volatile long *val)
-{
-	return __sync_fetch_and_sub(val, 1);
-}

libobs/util/platform-windows.c

@@ -185,16 +185,6 @@ int os_mkdir(const char *path)
 	return MKDIR_SUCCESS;
 }
 
-long atomic_inc_long(volatile long *val)
-{
-	return InterlockedIncrement(val);
-}
-
-long atomic_dec_long(volatile long *val)
-{
-	return InterlockedDecrement(val);
-}
-
 
 BOOL WINAPI DllMain(HINSTANCE hinst_dll, DWORD reason, LPVOID reserved)
 {

libobs/util/platform.h

@@ -76,9 +76,6 @@ EXPORT char *os_get_config_path(const char *name);
 
 EXPORT bool os_file_exists(const char *path);
 
-EXPORT long atomic_inc_long(volatile long *val);
-EXPORT long atomic_dec_long(volatile long *val);
-
 #define MKDIR_EXISTS   1
 #define MKDIR_SUCCESS  0
 #define MKDIR_ERROR   -1

libobs/util/threading-posix.c

@@ -235,3 +235,13 @@ int  os_sem_wait(os_sem_t sem)
 }
 
 #endif
+
+long os_atomic_inc_long(volatile long *val)
+{
+	return __sync_fetch_and_add(val, 1);
+}
+
+long os_atomic_dec_long(volatile long *val)
+{
+	return __sync_fetch_and_sub(val, 1);
+}

libobs/util/threading-windows.c

@@ -150,3 +150,13 @@ int  os_sem_wait(os_sem_t sem)
 	ret = WaitForSingleObject(sem->handle, INFINITE);
 	return (ret == WAIT_OBJECT_0) ? 0 : -1;
 }
+
+long os_atomic_inc_long(volatile long *val)
+{
+	return InterlockedIncrement(val);
+}
+
+long os_atomic_dec_long(volatile long *val)
+{
+	return InterlockedDecrement(val);
+}

libobs/util/threading.h

@@ -67,6 +67,9 @@ EXPORT void os_sem_destroy(os_sem_t sem);
 EXPORT int  os_sem_post(os_sem_t sem);
 EXPORT int  os_sem_wait(os_sem_t sem);
 
+EXPORT long os_atomic_inc_long(volatile long *val);
+EXPORT long os_atomic_dec_long(volatile long *val);
+
 
 #ifdef __cplusplus
 }