| // Copyright 2020 The Dawn & Tint Authors |
| // |
| // Redistribution and use in source and binary forms, with or without |
| // modification, are permitted provided that the following conditions are met: |
| // |
| // 1. Redistributions of source code must retain the above copyright notice, this |
| // list of conditions and the following disclaimer. |
| // |
| // 2. Redistributions in binary form must reproduce the above copyright notice, |
| // this list of conditions and the following disclaimer in the documentation |
| // and/or other materials provided with the distribution. |
| // |
| // 3. Neither the name of the copyright holder nor the names of its |
| // contributors may be used to endorse or promote products derived from |
| // this software without specific prior written permission. |
| // |
| // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
| // AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| // IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| // DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE |
| // FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| // DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
| // SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
| // CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
| // OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| |
| #include <atomic> |
| #include <thread> |
| |
| #include "gtest/gtest.h" |
| |
| #include "dawn/dawn_thread_dispatch_proc.h" |
| #include "dawn/native/DawnNative.h" |
| #include "dawn/native/Instance.h" |
| #include "dawn/native/null/DeviceNull.h" |
| #include "dawn/webgpu_cpp.h" |
| |
| namespace dawn { |
| namespace { |
| |
| class PerThreadProcTests : public testing::Test { |
| public: |
| PerThreadProcTests() |
| : mNativeInstance(native::APICreateInstance(nullptr)), |
| mAdapterBase(mNativeInstance.Get(), |
| AcquireRef(new native::null::PhysicalDevice()), |
| native::FeatureLevel::Core, |
| native::TogglesState(native::ToggleStage::Adapter), |
| wgpu::PowerPreference::Undefined) {} |
| ~PerThreadProcTests() override = default; |
| |
| protected: |
| Ref<native::InstanceBase> mNativeInstance; |
| native::AdapterBase mAdapterBase; |
| }; |
| |
| // Test that procs can be set per thread. This test overrides deviceCreateBuffer with a placeholder |
| // proc for each thread that increments a counter. Because each thread has their own proc and |
| // counter, there should be no data races. The per-thread procs also check that the current thread |
| // id is exactly equal to the expected thread id. |
| TEST_F(PerThreadProcTests, DispatchesPerThread) { |
| dawnProcSetProcs(&dawnThreadDispatchProcTable); |
| |
| // Threads will block on this atomic to be sure we set procs on both threads before |
| // either thread calls the procs. |
| std::atomic<bool> ready(false); |
| |
| static int threadACounter = 0; |
| static int threadBCounter = 0; |
| |
| static std::atomic<std::thread::id> threadIdA; |
| static std::atomic<std::thread::id> threadIdB; |
| |
| constexpr int kThreadATargetCount = 28347; |
| constexpr int kThreadBTargetCount = 40420; |
| |
| // Note: Acquire doesn't call reference or release. |
| wgpu::Device deviceA = |
| wgpu::Device::Acquire(reinterpret_cast<WGPUDevice>(mAdapterBase.APICreateDevice())); |
| |
| wgpu::Device deviceB = |
| wgpu::Device::Acquire(reinterpret_cast<WGPUDevice>(mAdapterBase.APICreateDevice())); |
| |
| std::thread threadA([&] { |
| DawnProcTable procs = native::GetProcs(); |
| procs.deviceCreateBuffer = [](WGPUDevice device, |
| WGPUBufferDescriptor const* descriptor) -> WGPUBuffer { |
| EXPECT_EQ(std::this_thread::get_id(), threadIdA); |
| threadACounter++; |
| return nullptr; |
| }; |
| dawnProcSetPerThreadProcs(&procs); |
| |
| while (!ready) { |
| } // Should be fast, so just spin. |
| |
| for (int i = 0; i < kThreadATargetCount; ++i) { |
| deviceA.CreateBuffer(nullptr); |
| } |
| |
| deviceA = nullptr; |
| dawnProcSetPerThreadProcs(nullptr); |
| }); |
| |
| std::thread threadB([&] { |
| DawnProcTable procs = native::GetProcs(); |
| procs.deviceCreateBuffer = [](WGPUDevice device, |
| WGPUBufferDescriptor const* bufferDesc) -> WGPUBuffer { |
| EXPECT_EQ(std::this_thread::get_id(), threadIdB); |
| threadBCounter++; |
| return nullptr; |
| }; |
| dawnProcSetPerThreadProcs(&procs); |
| |
| while (!ready) { |
| } // Should be fast, so just spin. |
| |
| for (int i = 0; i < kThreadBTargetCount; ++i) { |
| deviceB.CreateBuffer(nullptr); |
| } |
| |
| deviceB = nullptr; |
| dawnProcSetPerThreadProcs(nullptr); |
| }); |
| |
| threadIdA = threadA.get_id(); |
| threadIdB = threadB.get_id(); |
| |
| ready = true; |
| threadA.join(); |
| threadB.join(); |
| |
| EXPECT_EQ(threadACounter, kThreadATargetCount); |
| EXPECT_EQ(threadBCounter, kThreadBTargetCount); |
| |
| dawnProcSetProcs(nullptr); |
| } |
| |
| TEST_F(PerThreadProcTests, DispatchesDefaultThread) { |
| dawnProcSetProcs(&dawnThreadDispatchProcTable); |
| |
| // Threads will block on this atomic to be sure we set procs on both threads before |
| // either thread calls the procs. |
| std::atomic<bool> ready(false); |
| |
| static int threadDefaultCounter = 0; |
| static int threadACounter = 0; |
| |
| static std::atomic<std::thread::id> threadIdA; |
| static std::atomic<std::thread::id> threadIdB; |
| |
| constexpr int kThreadATargetCount = 28347; |
| constexpr int kThreadBTargetCount = 40420; |
| |
| { |
| DawnProcTable procs = native::GetProcs(); |
| procs.deviceCreateBuffer = [](WGPUDevice device, |
| WGPUBufferDescriptor const* descriptor) -> WGPUBuffer { |
| EXPECT_EQ(std::this_thread::get_id(), threadIdB); |
| threadDefaultCounter++; |
| return nullptr; |
| }; |
| dawnProcSetDefaultThreadProcs(&procs); |
| } |
| |
| // Note: Acquire doesn't call reference or release. |
| wgpu::Device deviceA = |
| wgpu::Device::Acquire(reinterpret_cast<WGPUDevice>(mAdapterBase.APICreateDevice())); |
| |
| wgpu::Device deviceB = |
| wgpu::Device::Acquire(reinterpret_cast<WGPUDevice>(mAdapterBase.APICreateDevice())); |
| |
| std::thread threadA([&] { |
| DawnProcTable procs = native::GetProcs(); |
| procs.deviceCreateBuffer = [](WGPUDevice device, |
| WGPUBufferDescriptor const* descriptor) -> WGPUBuffer { |
| EXPECT_EQ(std::this_thread::get_id(), threadIdA); |
| threadACounter++; |
| return nullptr; |
| }; |
| dawnProcSetPerThreadProcs(&procs); |
| |
| while (!ready) { |
| } // Should be fast, so just spin. |
| |
| for (int i = 0; i < kThreadATargetCount; ++i) { |
| deviceA.CreateBuffer(nullptr); |
| } |
| |
| deviceA = nullptr; |
| dawnProcSetPerThreadProcs(nullptr); |
| }); |
| |
| std::thread threadB([&] { |
| while (!ready) { |
| } // Should be fast, so just spin. |
| |
| for (int i = 0; i < kThreadBTargetCount; ++i) { |
| deviceB.CreateBuffer(nullptr); |
| } |
| |
| deviceB = nullptr; |
| dawnProcSetPerThreadProcs(nullptr); |
| }); |
| |
| threadIdA = threadA.get_id(); |
| threadIdB = threadB.get_id(); |
| |
| ready = true; |
| threadA.join(); |
| threadB.join(); |
| |
| EXPECT_EQ(threadDefaultCounter, kThreadBTargetCount); |
| EXPECT_EQ(threadACounter, kThreadATargetCount); |
| |
| dawnProcSetDefaultThreadProcs(nullptr); |
| dawnProcSetProcs(nullptr); |
| } |
| |
| } // anonymous namespace |
| } // namespace dawn |