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// Copyright 2019 The Dawn Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// 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 "dawn/wire/client/Client.h"
#include "dawn/common/Compiler.h"
#include "dawn/wire/client/Device.h"
namespace dawn::wire::client {
namespace {
class NoopCommandSerializer final : public CommandSerializer {
public:
static NoopCommandSerializer* GetInstance() {
static NoopCommandSerializer gNoopCommandSerializer;
return &gNoopCommandSerializer;
}
~NoopCommandSerializer() override = default;
size_t GetMaximumAllocationSize() const final { return 0; }
void* GetCmdSpace(size_t size) final { return nullptr; }
bool Flush() final { return false; }
};
} // anonymous namespace
Client::Client(CommandSerializer* serializer, MemoryTransferService* memoryTransferService)
: ClientBase(), mSerializer(serializer), mMemoryTransferService(memoryTransferService) {
if (mMemoryTransferService == nullptr) {
// If a MemoryTransferService is not provided, fall back to inline memory.
mOwnedMemoryTransferService = CreateInlineMemoryTransferService();
mMemoryTransferService = mOwnedMemoryTransferService.get();
}
}
Client::~Client() {
DestroyAllObjects();
}
void Client::DestroyAllObjects() {
// Free all devices first since they may hold references to other objects
// like the default queue. The Device destructor releases the default queue,
// which would be invalid if the queue was already freed.
while (!mObjects[ObjectType::Device].empty()) {
ObjectBase* object = mObjects[ObjectType::Device].head()->value();
DestroyObjectCmd cmd;
cmd.objectType = ObjectType::Device;
cmd.objectId = object->GetWireId();
SerializeCommand(cmd);
mObjectStores[ObjectType::Device].Free(object);
}
for (auto& objectList : mObjects) {
ObjectType objectType = static_cast<ObjectType>(&objectList - mObjects.data());
if (objectType == ObjectType::Device) {
continue;
}
while (!objectList.empty()) {
ObjectBase* object = objectList.head()->value();
DestroyObjectCmd cmd;
cmd.objectType = objectType;
cmd.objectId = object->GetWireId();
SerializeCommand(cmd);
mObjectStores[objectType].Free(object);
}
}
}
ReservedTexture Client::ReserveTexture(WGPUDevice device, const WGPUTextureDescriptor* descriptor) {
Texture* texture = Make<Texture>(descriptor);
ReservedTexture result;
result.texture = ToAPI(texture);
result.id = texture->GetWireId();
result.generation = texture->GetWireGeneration();
result.deviceId = FromAPI(device)->GetWireId();
result.deviceGeneration = FromAPI(device)->GetWireGeneration();
return result;
}
ReservedSwapChain Client::ReserveSwapChain(WGPUDevice device,
const WGPUSwapChainDescriptor* descriptor) {
SwapChain* swapChain = Make<SwapChain>(nullptr, descriptor);
ReservedSwapChain result;
result.swapchain = ToAPI(swapChain);
result.id = swapChain->GetWireId();
result.generation = swapChain->GetWireGeneration();
result.deviceId = FromAPI(device)->GetWireId();
result.deviceGeneration = FromAPI(device)->GetWireGeneration();
return result;
}
ReservedDevice Client::ReserveDevice() {
Device* device = Make<Device>(nullptr);
ReservedDevice result;
result.device = ToAPI(device);
result.id = device->GetWireId();
result.generation = device->GetWireGeneration();
return result;
}
ReservedInstance Client::ReserveInstance() {
Instance* instance = Make<Instance>();
ReservedInstance result;
result.instance = ToAPI(instance);
result.id = instance->GetWireId();
result.generation = instance->GetWireGeneration();
return result;
}
void Client::ReclaimTextureReservation(const ReservedTexture& reservation) {
Free(FromAPI(reservation.texture));
}
void Client::ReclaimSwapChainReservation(const ReservedSwapChain& reservation) {
Free(FromAPI(reservation.swapchain));
}
void Client::ReclaimDeviceReservation(const ReservedDevice& reservation) {
Free(FromAPI(reservation.device));
}
void Client::ReclaimInstanceReservation(const ReservedInstance& reservation) {
Free(FromAPI(reservation.instance));
}
void Client::Disconnect() {
mDisconnected = true;
mSerializer = ChunkedCommandSerializer(NoopCommandSerializer::GetInstance());
auto& deviceList = mObjects[ObjectType::Device];
{
for (LinkNode<ObjectBase>* device = deviceList.head(); device != deviceList.end();
device = device->next()) {
static_cast<Device*>(device->value())
->HandleDeviceLost(WGPUDeviceLostReason_Undefined, "GPU connection lost");
}
}
for (auto& objectList : mObjects) {
for (LinkNode<ObjectBase>* object = objectList.head(); object != objectList.end();
object = object->next()) {
object->value()->CancelCallbacksForDisconnect();
}
}
}
bool Client::IsDisconnected() const {
return mDisconnected;
}
void Client::Free(ObjectBase* obj, ObjectType type) {
mObjectStores[type].Free(obj);
}
} // namespace dawn::wire::client