Add test cases for multi-threaded recycling in ResourceCache. (#92)

test/src/ResourceCacheTest.cpp

@@ -0,0 +1,68 @@
+/////////////////////////////////////////////////////////////////////////////////////////////////
+//
+//  Tencent is pleased to support the open source community by making tgfx available.
+//
+//  Copyright (C) 2023 THL A29 Limited, a Tencent company. All rights reserved.
+//
+//  Licensed under the BSD 3-Clause License (the "License"); you may not use this file except
+//  in compliance with the License. You may obtain a copy of the License at
+//
+//      https://opensource.org/licenses/BSD-3-Clause
+//
+//  unless required by applicable law or agreed to in writing, software distributed under the
+//  license is distributed on an "as is" basis, without warranties or conditions of any kind,
+//  either express or implied. see the license for the specific language governing permissions
+//  and limitations under the license.
+//
+/////////////////////////////////////////////////////////////////////////////////////////////////
+
+#include <vector>
+#include "tgfx/gpu/Resource.h"
+#include "tgfx/utils/Task.h"
+#include "utils/TestUtils.h"
+
+namespace tgfx {
+class TestResource : public Resource {
+ public:
+  static std::shared_ptr<const TestResource> Make(tgfx::Context* context, uint32_t id) {
+    return Resource::Wrap(context, new TestResource(id));
+  }
+
+  size_t memoryUsage() const override {
+    return 1;
+  }
+
+ protected:
+  void computeScratchKey(BytesKey* key) const override {
+    key->write(id);
+  }
+
+ private:
+  TestResource(uint32_t id) : Resource(), id(id) {
+  }
+
+  void onReleaseGPU() override {
+  }
+
+  uint32_t id = 0;
+};
+
+TGFX_TEST(ResourceCacheTest, multiThreadRecycling) {
+  auto device = DevicePool::Make();
+  ASSERT_TRUE(device != nullptr);
+  tgfx::Task::Run([device] {
+    for (int i = 0; i < 100; ++i) {
+      auto context = device->lockContext();
+      ASSERT_TRUE(context != nullptr);
+      auto resource = TestResource::Make(context, i);
+      context->flush();
+      context->resourceCache()->purgeUntilMemoryTo(0);
+      device->unlock();
+      tgfx::Task::Run([resource, device] {
+        resource.get();
+        device.get();
+      });
+    }
+  });
+}
+}  // namespace tgfx