libobs/util: Add long load/store atomic funcs

libobs/util/threading-posix.c

@@ -256,6 +256,16 @@ long os_atomic_dec_long(volatile long *val)
 	return __sync_sub_and_fetch(val, 1);
 }
 
+long os_atomic_set_long(volatile long *ptr, long val)
+{
+	return __sync_lock_test_and_set(ptr, val);
+}
+
+long os_atomic_load_long(const volatile long *ptr)
+{
+	return __atomic_load_n(ptr, __ATOMIC_SEQ_CST);
+}
+
 bool os_atomic_compare_swap_long(volatile long *val, long old_val, long new_val)
 {
 	return __sync_bool_compare_and_swap(val, old_val, new_val);

libobs/util/threading-windows.c

@@ -159,6 +159,16 @@ long os_atomic_dec_long(volatile long *val)
 	return InterlockedDecrement(val);
 }
 
+long os_atomic_set_long(volatile long *ptr, long val)
+{
+	return (long)InterlockedExchange((volatile long*)ptr, (long)val);
+}
+
+long os_atomic_load_long(const volatile long *ptr)
+{
+	return (long)InterlockedOr((volatile long*)ptr, 0);
+}
+
 bool os_atomic_compare_swap_long(volatile long *val, long old_val, long new_val)
 {
 	return InterlockedCompareExchange(val, new_val, old_val) == old_val;

libobs/util/threading.h

@@ -72,6 +72,8 @@ 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);
+EXPORT long os_atomic_set_long(volatile long *ptr, long val);
+EXPORT long os_atomic_load_long(const volatile long *ptr);
 
 EXPORT bool os_atomic_compare_swap_long(volatile long *val,
 		long old_val, long new_val);