#include <atomic>
-#include <thread>
+
+// Note that although hogging the CPU while waiting for a variable to change
+// would be terrible in production code, it's great for testing since it avoids
+// a lot of messy context switching to get multiple threads synchronized.
typedef std::atomic<int> pseudo_barrier_t;
-static inline void pseudo_barrier_wait(pseudo_barrier_t &barrier) {
- --barrier;
- while (barrier > 0)
- std::this_thread::yield();
-}
+#define pseudo_barrier_wait(barrier) \
+ do \
+ { \
+ --(barrier); \
+ while ((barrier).load() > 0) \
+ ; \
+ } while (0)
-static inline void pseudo_barrier_init(pseudo_barrier_t &barrier, int count) {
- barrier = count;
-}
+#define pseudo_barrier_init(barrier, count) \
+ do \
+ { \
+ (barrier) = (count); \
+ } while (0)