diff options
Diffstat (limited to 'absl/synchronization/internal/futex_waiter.h')
| -rw-r--r-- | absl/synchronization/internal/futex_waiter.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/absl/synchronization/internal/futex_waiter.h b/absl/synchronization/internal/futex_waiter.h index a6a72095..11dfa93b 100644 --- a/absl/synchronization/internal/futex_waiter.h +++ b/absl/synchronization/internal/futex_waiter.h @@ -43,6 +43,11 @@ class FutexWaiter : public WaiterCrtp<FutexWaiter> { static constexpr char kName[] = "FutexWaiter"; private: + // Atomically check that `*v == val`, and if it is, then sleep until the + // timeout `t` has been reached, or until woken by `Wake()`. + static int WaitUntil(std::atomic<int32_t>* v, int32_t val, + KernelTimeout t); + // Futexes are defined by specification to be 32-bits. // Thus std::atomic<int32_t> must be just an int32_t with lockfree methods. std::atomic<int32_t> futex_; |