| // Copyright 2023 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 <sys/mman.h> |
| #include <unistd.h> |
| #include <utility> |
| #include <vector> |
| |
| #include "dawn/common/MutexProtected.h" |
| #include "dawn/tests/MockCallback.h" |
| #include "dawn/tests/end2end/BufferHostMappedPointerTests.h" |
| |
| namespace dawn { |
| namespace { |
| |
| class MMapBackend : public BufferHostMappedPointerTestBackend { |
| public: |
| static BufferHostMappedPointerTestBackend* GetInstance() { |
| static MMapBackend backend; |
| return &backend; |
| } |
| |
| const char* Name() const override { return "mmap"; } |
| |
| std::pair<wgpu::Buffer, void*> CreateHostMappedBuffer( |
| wgpu::Device device, |
| wgpu::BufferUsage usage, |
| size_t size, |
| std::function<void(void*)> Populate) override { |
| // Create a temporary file. |
| char filename[] = "tmpXXXXXX"; |
| int fd = mkstemp(filename); |
| EXPECT_GT(fd, -1); |
| |
| unlink(filename); |
| |
| // Write the initial data. |
| std::vector<char> initialData(size); |
| Populate(initialData.data()); |
| EXPECT_EQ(write(fd, initialData.data(), size), (signed)size); |
| |
| // Memory map the file. |
| void* ptr = mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_PRIVATE, fd, 0); |
| |
| auto UnmapMemory = [=]() { |
| munmap(ptr, size); |
| close(fd); |
| }; |
| |
| wgpu::BufferHostMappedPointer hostMappedDesc; |
| hostMappedDesc.pointer = ptr; |
| mDisposeCallback.Use([&](auto callback) { |
| hostMappedDesc.disposeCallback = callback->Callback(); |
| hostMappedDesc.userdata = callback->MakeUserdata(ptr); |
| }); |
| |
| wgpu::BufferDescriptor bufferDesc; |
| bufferDesc.usage = usage; |
| bufferDesc.size = size; |
| bufferDesc.nextInChain = &hostMappedDesc; |
| |
| wgpu::Buffer buffer = device.CreateBuffer(&bufferDesc); |
| if (dawn::native::CheckIsErrorForTesting(buffer.Get())) { |
| UnmapMemory(); |
| } else { |
| mDisposeCallback.Use([&](auto callback) { |
| EXPECT_CALL(*callback, Call(ptr)).WillOnce(testing::InvokeWithoutArgs(UnmapMemory)); |
| }); |
| } |
| |
| return std::make_pair(std::move(buffer), hostMappedDesc.pointer); |
| } |
| |
| private: |
| MutexProtected<testing::MockCallback<WGPUCallback>> mDisposeCallback; |
| }; |
| |
| DAWN_INSTANTIATE_PREFIXED_TEST_P(Posix, |
| BufferHostMappedPointerTests, |
| {MetalBackend(), VulkanBackend()}, |
| {MMapBackend::GetInstance()}); |
| |
| } // anonymous namespace |
| } // namespace dawn |