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[compiler-rt] Use the new zx_futex_wait for Fuchsia sanitizer runtime
ClosedPublic

Authored by phosek on Dec 3 2018, 6:54 PM.

Reviewers

mcgrathr
jakehehrlich

Commits

Summary

This finishes the soft-transition to the new primitive that implements
priority inheritance.

This revision is now accepted and ready to land.Dec 3 2018, 7:58 PM

This revision was automatically updated to reflect the committed changes.

Path

Size

lib/

sanitizer_common/

5 lines

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	}			}

	void BlockingMutex::Lock() {			void BlockingMutex::Lock() {
	CHECK_EQ(owner_, 0);			CHECK_EQ(owner_, 0);
	atomic_uint32_t m = reinterpret_cast<atomic_uint32_t >(&opaque_storage_);			atomic_uint32_t m = reinterpret_cast<atomic_uint32_t >(&opaque_storage_);
	if (atomic_exchange(m, MtxLocked, memory_order_acquire) == MtxUnlocked)			if (atomic_exchange(m, MtxLocked, memory_order_acquire) == MtxUnlocked)
	return;			return;
	while (atomic_exchange(m, MtxSleeping, memory_order_acquire) != MtxUnlocked) {			while (atomic_exchange(m, MtxSleeping, memory_order_acquire) != MtxUnlocked) {
	zx_status_t status = _zx_futex_wait_deprecated(			zx_status_t status =
	reinterpret_cast<zx_futex_t *>(m), MtxSleeping, ZX_TIME_INFINITE);			_zx_futex_wait(reinterpret_cast<zx_futex_t *>(m), MtxSleeping,
				ZX_HANDLE_INVALID, ZX_TIME_INFINITE);
	if (status != ZX_ERR_BAD_STATE) // Normal race.			if (status != ZX_ERR_BAD_STATE) // Normal race.
	CHECK_EQ(status, ZX_OK);			CHECK_EQ(status, ZX_OK);
	}			}
	}			}

	void BlockingMutex::Unlock() {			void BlockingMutex::Unlock() {
	atomic_uint32_t m = reinterpret_cast<atomic_uint32_t >(&opaque_storage_);			atomic_uint32_t m = reinterpret_cast<atomic_uint32_t >(&opaque_storage_);
	u32 v = atomic_exchange(m, MtxUnlocked, memory_order_release);			u32 v = atomic_exchange(m, MtxUnlocked, memory_order_release);
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