src/dawn/wire/server/Server.cpp - dawn - Git at Google

 // Copyright 2019 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 "dawn/wire/server/Server.h"
 #include "dawn/wire/WireServer.h"

 namespace dawn::wire::server {

 CallbackUserdata::CallbackUserdata(Server* server, const std::shared_ptr<bool>& serverIsAlive)
     : server(server), serverIsAlive(serverIsAlive) {}

 Server::Server(const DawnProcTable& procs,
                CommandSerializer* serializer,
                MemoryTransferService* memoryTransferService)
     : mSerializer(serializer),
       mProcs(procs),
       mMemoryTransferService(memoryTransferService),
       mIsAlive(std::make_shared<bool>(true)) {
     if (mMemoryTransferService == nullptr) {
         // If a MemoryTransferService is not provided, fallback to inline memory.
         mOwnedMemoryTransferService = CreateInlineMemoryTransferService();
         mMemoryTransferService = mOwnedMemoryTransferService.get();
     }
 }

 Server::~Server() {
     // Un-set the error and lost callbacks since we cannot forward them
     // after the server has been destroyed.
     for (WGPUDevice device : DeviceObjects().GetAllHandles()) {
         ClearDeviceCallbacks(device);
     }
     DestroyAllObjects(mProcs);
 }

 WireResult Server::InjectTexture(WGPUTexture texture,
                                  uint32_t id,
                                  uint32_t generation,
                                  uint32_t deviceId,
                                  uint32_t deviceGeneration) {
     DAWN_ASSERT(texture != nullptr);
     Known<WGPUDevice> device;
     WIRE_TRY(DeviceObjects().Get(deviceId, &device));
     if (device->generation != deviceGeneration) {
         return WireResult::FatalError;
     }

     Known<WGPUTexture> data;
     WIRE_TRY(TextureObjects().Allocate(&data, ObjectHandle{id, generation}));

     data->handle = texture;
     data->generation = generation;
     data->state = AllocationState::Allocated;

     // The texture is externally owned so it shouldn't be destroyed when we receive a destroy
     // message from the client. Add a reference to counterbalance the eventual release.
     mProcs.textureReference(texture);

     return WireResult::Success;
 }

 WireResult Server::InjectSwapChain(WGPUSwapChain swapchain,
                                    uint32_t id,
                                    uint32_t generation,
                                    uint32_t deviceId,
                                    uint32_t deviceGeneration) {
     DAWN_ASSERT(swapchain != nullptr);
     Known<WGPUDevice> device;
     WIRE_TRY(DeviceObjects().Get(deviceId, &device));
     if (device->generation != deviceGeneration) {
         return WireResult::FatalError;
     }

     Known<WGPUSwapChain> data;
     WIRE_TRY(SwapChainObjects().Allocate(&data, ObjectHandle{id, generation}));

     data->handle = swapchain;
     data->generation = generation;
     data->state = AllocationState::Allocated;

     // The texture is externally owned so it shouldn't be destroyed when we receive a destroy
     // message from the client. Add a reference to counterbalance the eventual release.
     mProcs.swapChainReference(swapchain);

     return WireResult::Success;
 }

 WireResult Server::InjectDevice(WGPUDevice device, uint32_t id, uint32_t generation) {
     DAWN_ASSERT(device != nullptr);
     Known<WGPUDevice> data;
     WIRE_TRY(DeviceObjects().Allocate(&data, ObjectHandle{id, generation}));

     data->handle = device;
     data->generation = generation;
     data->state = AllocationState::Allocated;
     data->info->server = this;
     data->info->self = data.AsHandle();

     // The device is externally owned so it shouldn't be destroyed when we receive a destroy
     // message from the client. Add a reference to counterbalance the eventual release.
     mProcs.deviceReference(device);

     // Set callbacks to forward errors to the client.
     SetForwardingDeviceCallbacks(data);
     return WireResult::Success;
 }

 WireResult Server::InjectInstance(WGPUInstance instance, uint32_t id, uint32_t generation) {
     DAWN_ASSERT(instance != nullptr);
     Known<WGPUInstance> data;
     WIRE_TRY(InstanceObjects().Allocate(&data, ObjectHandle{id, generation}));

     data->handle = instance;
     data->generation = generation;
     data->state = AllocationState::Allocated;

     // The instance is externally owned so it shouldn't be destroyed when we receive a destroy
     // message from the client. Add a reference to counterbalance the eventual release.
     mProcs.instanceReference(instance);

     return WireResult::Success;
 }

 WGPUDevice Server::GetDevice(uint32_t id, uint32_t generation) {
     Known<WGPUDevice> device;
     if (DeviceObjects().Get(id, &device) != WireResult::Success ||
         device->generation != generation) {
         return nullptr;
     }
     return device->handle;
 }

 bool Server::IsDeviceKnown(WGPUDevice device) const {
     return DeviceObjects().IsKnown(device);
 }

 void Server::SetForwardingDeviceCallbacks(Known<WGPUDevice> device) {
     // Note: these callbacks are manually inlined here since they do not acquire and
     // free their userdata. Also unlike other callbacks, these are cleared and unset when
     // the server is destroyed, so we don't need to check if the server is still alive
     // inside them.
     // Also, the device is special-cased in Server::DoDestroyObject to call
     // ClearDeviceCallbacks. This ensures that callbacks will not fire after |deviceObject|
     // is freed.
     mProcs.deviceSetUncapturedErrorCallback(
         device->handle,
         [](WGPUErrorType type, const char* message, void* userdata) {
             DeviceInfo* info = static_cast<DeviceInfo*>(userdata);
             info->server->OnUncapturedError(info->self, type, message);
         },
         device->info.get());
     // Set callback to post warning and other infomation to client.
     // Almost the same with UncapturedError.
     mProcs.deviceSetLoggingCallback(
         device->handle,
         [](WGPULoggingType type, const char* message, void* userdata) {
             DeviceInfo* info = static_cast<DeviceInfo*>(userdata);
             info->server->OnLogging(info->self, type, message);
         },
         device->info.get());
     mProcs.deviceSetDeviceLostCallback(
         device->handle,
         [](WGPUDeviceLostReason reason, const char* message, void* userdata) {
             DeviceInfo* info = static_cast<DeviceInfo*>(userdata);
             info->server->OnDeviceLost(info->self, reason, message);
         },
         device->info.get());
 }

 void Server::ClearDeviceCallbacks(WGPUDevice device) {
     // Un-set the error and lost callbacks since we cannot forward them
     // after the server has been destroyed.
     mProcs.deviceSetUncapturedErrorCallback(device, nullptr, nullptr);
     mProcs.deviceSetLoggingCallback(device, nullptr, nullptr);
     mProcs.deviceSetDeviceLostCallback(device, nullptr, nullptr);
 }

 }  // namespace dawn::wire::server
	// Copyright 2019 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 "dawn/wire/server/Server.h"
	#include "dawn/wire/WireServer.h"

	namespace dawn::wire::server {

	CallbackUserdata::CallbackUserdata(Server* server, const std::shared_ptr<bool>& serverIsAlive)
	: server(server), serverIsAlive(serverIsAlive) {}

	Server::Server(const DawnProcTable& procs,
	CommandSerializer* serializer,
	MemoryTransferService* memoryTransferService)
	: mSerializer(serializer),
	mProcs(procs),
	mMemoryTransferService(memoryTransferService),
	mIsAlive(std::make_shared<bool>(true)) {
	if (mMemoryTransferService == nullptr) {
	// If a MemoryTransferService is not provided, fallback to inline memory.
	mOwnedMemoryTransferService = CreateInlineMemoryTransferService();
	mMemoryTransferService = mOwnedMemoryTransferService.get();
	}
	}

	Server::~Server() {
	// Un-set the error and lost callbacks since we cannot forward them
	// after the server has been destroyed.
	for (WGPUDevice device : DeviceObjects().GetAllHandles()) {
	ClearDeviceCallbacks(device);
	}
	DestroyAllObjects(mProcs);
	}

	WireResult Server::InjectTexture(WGPUTexture texture,
	uint32_t id,
	uint32_t generation,
	uint32_t deviceId,
	uint32_t deviceGeneration) {
	DAWN_ASSERT(texture != nullptr);
	Known<WGPUDevice> device;
	WIRE_TRY(DeviceObjects().Get(deviceId, &device));
	if (device->generation != deviceGeneration) {
	return WireResult::FatalError;
	}

	Known<WGPUTexture> data;
	WIRE_TRY(TextureObjects().Allocate(&data, ObjectHandle{id, generation}));

	data->handle = texture;
	data->generation = generation;
	data->state = AllocationState::Allocated;

	// The texture is externally owned so it shouldn't be destroyed when we receive a destroy
	// message from the client. Add a reference to counterbalance the eventual release.
	mProcs.textureReference(texture);

	return WireResult::Success;
	}

	WireResult Server::InjectSwapChain(WGPUSwapChain swapchain,
	uint32_t id,
	uint32_t generation,
	uint32_t deviceId,
	uint32_t deviceGeneration) {
	DAWN_ASSERT(swapchain != nullptr);
	Known<WGPUDevice> device;
	WIRE_TRY(DeviceObjects().Get(deviceId, &device));
	if (device->generation != deviceGeneration) {
	return WireResult::FatalError;
	}

	Known<WGPUSwapChain> data;
	WIRE_TRY(SwapChainObjects().Allocate(&data, ObjectHandle{id, generation}));

	data->handle = swapchain;
	data->generation = generation;
	data->state = AllocationState::Allocated;

	// The texture is externally owned so it shouldn't be destroyed when we receive a destroy
	// message from the client. Add a reference to counterbalance the eventual release.
	mProcs.swapChainReference(swapchain);

	return WireResult::Success;
	}

	WireResult Server::InjectDevice(WGPUDevice device, uint32_t id, uint32_t generation) {
	DAWN_ASSERT(device != nullptr);
	Known<WGPUDevice> data;
	WIRE_TRY(DeviceObjects().Allocate(&data, ObjectHandle{id, generation}));

	data->handle = device;
	data->generation = generation;
	data->state = AllocationState::Allocated;
	data->info->server = this;
	data->info->self = data.AsHandle();

	// The device is externally owned so it shouldn't be destroyed when we receive a destroy
	// message from the client. Add a reference to counterbalance the eventual release.
	mProcs.deviceReference(device);

	// Set callbacks to forward errors to the client.
	SetForwardingDeviceCallbacks(data);
	return WireResult::Success;
	}

	WireResult Server::InjectInstance(WGPUInstance instance, uint32_t id, uint32_t generation) {
	DAWN_ASSERT(instance != nullptr);
	Known<WGPUInstance> data;
	WIRE_TRY(InstanceObjects().Allocate(&data, ObjectHandle{id, generation}));

	data->handle = instance;
	data->generation = generation;
	data->state = AllocationState::Allocated;

	// The instance is externally owned so it shouldn't be destroyed when we receive a destroy
	// message from the client. Add a reference to counterbalance the eventual release.
	mProcs.instanceReference(instance);

	return WireResult::Success;
	}

	WGPUDevice Server::GetDevice(uint32_t id, uint32_t generation) {
	Known<WGPUDevice> device;
	if (DeviceObjects().Get(id, &device) != WireResult::Success \|\|
	device->generation != generation) {
	return nullptr;
	}
	return device->handle;
	}

	bool Server::IsDeviceKnown(WGPUDevice device) const {
	return DeviceObjects().IsKnown(device);
	}

	void Server::SetForwardingDeviceCallbacks(Known<WGPUDevice> device) {
	// Note: these callbacks are manually inlined here since they do not acquire and
	// free their userdata. Also unlike other callbacks, these are cleared and unset when
	// the server is destroyed, so we don't need to check if the server is still alive
	// inside them.
	// Also, the device is special-cased in Server::DoDestroyObject to call
	// ClearDeviceCallbacks. This ensures that callbacks will not fire after \|deviceObject\|
	// is freed.
	mProcs.deviceSetUncapturedErrorCallback(
	device->handle,
	[](WGPUErrorType type, const char* message, void* userdata) {
	DeviceInfo* info = static_cast<DeviceInfo*>(userdata);
	info->server->OnUncapturedError(info->self, type, message);
	},
	device->info.get());
	// Set callback to post warning and other infomation to client.
	// Almost the same with UncapturedError.
	mProcs.deviceSetLoggingCallback(
	device->handle,
	[](WGPULoggingType type, const char* message, void* userdata) {
	DeviceInfo* info = static_cast<DeviceInfo*>(userdata);
	info->server->OnLogging(info->self, type, message);
	},
	device->info.get());
	mProcs.deviceSetDeviceLostCallback(
	device->handle,
	[](WGPUDeviceLostReason reason, const char* message, void* userdata) {
	DeviceInfo* info = static_cast<DeviceInfo*>(userdata);
	info->server->OnDeviceLost(info->self, reason, message);
	},
	device->info.get());
	}

	void Server::ClearDeviceCallbacks(WGPUDevice device) {
	// Un-set the error and lost callbacks since we cannot forward them
	// after the server has been destroyed.
	mProcs.deviceSetUncapturedErrorCallback(device, nullptr, nullptr);
	mProcs.deviceSetLoggingCallback(device, nullptr, nullptr);
	mProcs.deviceSetDeviceLostCallback(device, nullptr, nullptr);
	}

	} // namespace dawn::wire::server