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// Copyright 2022 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "base/functional/callback.h"
#include "base/memory/raw_ptr.h"
#include "base/run_loop.h"
#include "base/test/mock_callback.h"
#include "gpu/command_buffer/client/webgpu_interface_stub.h"
#include "testing/gmock/include/gmock/gmock.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "third_party/blink/renderer/bindings/core/v8/v8_binding_for_testing.h"
#include "third_party/blink/renderer/core/frame/local_dom_window.h"
#include "third_party/blink/renderer/core/frame/local_frame.h"
#include "third_party/blink/renderer/core/frame/navigator.h"
#include "third_party/blink/renderer/core/testing/dummy_page_holder.h"
#include "third_party/blink/renderer/modules/webgpu/gpu.h"
#include "third_party/blink/renderer/platform/graphics/gpu/dawn_control_client_holder.h"
#include "third_party/blink/renderer/platform/graphics/gpu/drawing_buffer_test_helpers.h"
#include "third_party/blink/renderer/platform/testing/task_environment.h"
namespace blink {
namespace {
class WebGPUContextProviderForTest
: public WebGraphicsContext3DProviderForTests {
public:
explicit WebGPUContextProviderForTest(
base::MockCallback<base::OnceClosure>* destruction_callback)
: WebGraphicsContext3DProviderForTests(
std::make_unique<gpu::webgpu::WebGPUInterfaceStub>()),
destruction_callback_(destruction_callback) {}
~WebGPUContextProviderForTest() override {
if (destruction_callback_) {
destruction_callback_->Run();
}
}
static WebGPUContextProviderForTest* From(
scoped_refptr<DawnControlClientHolder>& dawn_control_client) {
return static_cast<WebGPUContextProviderForTest*>(
&(dawn_control_client->GetContextProviderWeakPtr()->ContextProvider()));
}
void ClearDestructionCallback() { destruction_callback_ = nullptr; }
void SetLostContextCallback(
base::RepeatingClosure lost_context_callback) override {
lost_context_callback_ = std::move(lost_context_callback);
}
void CallLostContextCallback() { lost_context_callback_.Run(); }
private:
raw_ptr<base::MockCallback<base::OnceClosure>> destruction_callback_;
base::RepeatingClosure lost_context_callback_;
};
class WebGPUContextLostTest : public testing::Test {
protected:
void SetUp() override { page_ = std::make_unique<DummyPageHolder>(); }
std::tuple<ExecutionContext*, GPU*> SetUpGPU(V8TestingScope* v8_test_scope) {
ExecutionContext* execution_context =
ExecutionContext::From(v8_test_scope->GetScriptState());
Navigator* navigator = page_->GetFrame().DomWindow()->navigator();
GPU* gpu = MakeGarbageCollected<GPU>(*navigator);
return std::make_tuple(execution_context, gpu);
}
test::TaskEnvironment task_environment_;
std::unique_ptr<DummyPageHolder> page_;
};
// Test that the context provider is destructed after the last reference to
// its owning DawnControlClientHolder is dropped.
TEST_F(WebGPUContextLostTest, DestructedAfterLastRefDropped) {
V8TestingScope v8_test_scope;
ExecutionContext* execution_context =
ExecutionContext::From(v8_test_scope.GetScriptState());
base::MockCallback<base::OnceClosure> destruction_callback;
auto context_provider =
std::make_unique<WebGPUContextProviderForTest>(&destruction_callback);
auto dawn_control_client = DawnControlClientHolder::Create(
std::move(context_provider),
execution_context->GetTaskRunner(TaskType::kWebGPU));
// Drop the last reference to the DawnControlClientHolder which will
// now destroy the context provider.
EXPECT_CALL(destruction_callback, Run()).Times(1);
dawn_control_client = nullptr;
}
// Test that the GPU lost context callback marks the context lost, but does not
// destruct it.
TEST_F(WebGPUContextLostTest, GPULostContext) {
V8TestingScope v8_test_scope;
auto [execution_context, gpu] = SetUpGPU(&v8_test_scope);
base::MockCallback<base::OnceClosure> destruction_callback;
auto context_provider =
std::make_unique<WebGPUContextProviderForTest>(&destruction_callback);
auto dawn_control_client = DawnControlClientHolder::Create(
std::move(context_provider),
execution_context->GetTaskRunner(TaskType::kWebGPU));
gpu->SetDawnControlClientHolderForTesting(dawn_control_client);
// Trigger the lost context callback, but the context should not be destroyed.
EXPECT_CALL(destruction_callback, Run()).Times(0);
WebGPUContextProviderForTest::From(dawn_control_client)
->CallLostContextCallback();
testing::Mock::VerifyAndClear(&destruction_callback);
// The context should be marked lost.
EXPECT_TRUE(dawn_control_client->IsContextLost());
// The context provider should still be live.
auto context_provider_weak_ptr =
dawn_control_client->GetContextProviderWeakPtr();
EXPECT_NE(context_provider_weak_ptr, nullptr);
// Clear the destruction callback since it is stack-allocated in this frame.
static_cast<WebGPUContextProviderForTest&>(
context_provider_weak_ptr->ContextProvider())
.ClearDestructionCallback();
}
// Test that the GPU lost context callback marks the context lost, and then when
// the context is recreated, the context still lives until the previous
// DawnControlClientHolder is destroyed.
TEST_F(WebGPUContextLostTest, RecreatedAfterGPULostContext) {
V8TestingScope v8_test_scope;
auto [execution_context, gpu] = SetUpGPU(&v8_test_scope);
base::MockCallback<base::OnceClosure> destruction_callback;
auto context_provider =
std::make_unique<WebGPUContextProviderForTest>(&destruction_callback);
auto dawn_control_client = DawnControlClientHolder::Create(
std::move(context_provider),
execution_context->GetTaskRunner(TaskType::kWebGPU));
gpu->SetDawnControlClientHolderForTesting(dawn_control_client);
// Trigger the lost context callback, but the context should not be destroyed.
EXPECT_CALL(destruction_callback, Run()).Times(0);
WebGPUContextProviderForTest::From(dawn_control_client)
->CallLostContextCallback();
testing::Mock::VerifyAndClear(&destruction_callback);
// The context should be marked lost.
EXPECT_TRUE(dawn_control_client->IsContextLost());
// The context provider should still be live.
auto context_provider_weak_ptr =
dawn_control_client->GetContextProviderWeakPtr();
EXPECT_NE(context_provider_weak_ptr, nullptr);
// Make a new context provider and DawnControlClientHolder
base::MockCallback<base::OnceClosure> destruction_callback2;
auto context_provider2 =
std::make_unique<WebGPUContextProviderForTest>(&destruction_callback2);
auto dawn_control_client2 = DawnControlClientHolder::Create(
std::move(context_provider2),
execution_context->GetTaskRunner(TaskType::kWebGPU));
// Set the new context, but the previous context should still not be
// destroyed.
EXPECT_CALL(destruction_callback, Run()).Times(0);
gpu->SetDawnControlClientHolderForTesting(dawn_control_client2);
testing::Mock::VerifyAndClear(&destruction_callback);
// Drop the last reference to the previous DawnControlClientHolder which will
// now destroy the previous context provider.
EXPECT_CALL(destruction_callback, Run()).Times(1);
dawn_control_client = nullptr;
testing::Mock::VerifyAndClear(&destruction_callback);
// Clear the destruction callback since it is stack-allocated in this frame.
static_cast<WebGPUContextProviderForTest&>(
dawn_control_client2->GetContextProviderWeakPtr()->ContextProvider())
.ClearDestructionCallback();
}
// Test that ContextDestroyed lifecycle event destructs the context.
TEST_F(WebGPUContextLostTest, ContextDestroyed) {
V8TestingScope v8_test_scope;
auto [execution_context, gpu] = SetUpGPU(&v8_test_scope);
base::MockCallback<base::OnceClosure> destruction_callback;
auto context_provider =
std::make_unique<WebGPUContextProviderForTest>(&destruction_callback);
auto dawn_control_client = DawnControlClientHolder::Create(
std::move(context_provider),
execution_context->GetTaskRunner(TaskType::kWebGPU));
gpu->SetDawnControlClientHolderForTesting(dawn_control_client);
// Trigger the context destroyed lifecycle event. The context should not be
// destroyed yet.
EXPECT_CALL(destruction_callback, Run()).Times(0);
gpu->ContextDestroyed();
testing::Mock::VerifyAndClear(&destruction_callback);
// The context should be marked lost.
EXPECT_TRUE(dawn_control_client->IsContextLost());
// Getting the context provider should return null.
EXPECT_EQ(dawn_control_client->GetContextProviderWeakPtr(), nullptr);
// The context is destructed in a posted task with a fresh callstack to avoid
// re-entrancy issues. Expectations should resolve by the end of the next
// task.
EXPECT_CALL(destruction_callback, Run()).Times(1);
base::RunLoop loop;
execution_context->GetTaskRunner(TaskType::kWebGPU)
->PostTask(FROM_HERE, loop.QuitClosure());
loop.Run();
testing::Mock::VerifyAndClear(&destruction_callback);
}
} // namespace
} // namespace blink
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