diff options
Diffstat (limited to 'gpu/command_buffer/common/command_buffer_shared.h')
| -rw-r--r-- | gpu/command_buffer/common/command_buffer_shared.h | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/gpu/command_buffer/common/command_buffer_shared.h b/gpu/command_buffer/common/command_buffer_shared.h index 017a644..fafe767 100644 --- a/gpu/command_buffer/common/command_buffer_shared.h +++ b/gpu/command_buffer/common/command_buffer_shared.h @@ -30,16 +30,17 @@ public: base::subtle::NoBarrier_Store(&reading_, 0); base::subtle::NoBarrier_Store(&latest_, 0); base::subtle::NoBarrier_Store(&slots_[0], 0); - base::subtle::Acquire_Store(&slots_[1], 0); + base::subtle::Release_Store(&slots_[1], 0); + base::subtle::MemoryBarrier(); } void Write(const T& state) { int towrite = !base::subtle::Acquire_Load(&reading_); int index = !base::subtle::Acquire_Load(&slots_[towrite]); states_[towrite][index] = state; + base::subtle::Release_Store(&slots_[towrite], index); + base::subtle::Release_Store(&latest_, towrite); base::subtle::MemoryBarrier(); - base::subtle::Acquire_Store(&slots_[towrite], index); - base::subtle::Acquire_Store(&latest_, towrite); } // Attempt to update the state, updating only if the generation counter is @@ -47,7 +48,8 @@ public: void Read(T* state) { base::subtle::MemoryBarrier(); int toread = !!base::subtle::Acquire_Load(&latest_); - base::subtle::Acquire_Store(&reading_, toread); + base::subtle::Release_Store(&reading_, toread); + base::subtle::MemoryBarrier(); int index = !!base::subtle::Acquire_Load(&slots_[toread]); if (states_[toread][index].generation - state->generation < 0x80000000U) *state = states_[toread][index]; |