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https://github.com/encounter/dawn-cmake.git
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cac0442277
This CL adds support for chunking large commands by first serializing large commands first into a separate buffer, and then sending the buffer data chunk by chunk. This code path is used for large writeBuffer and writeTexture, as well as the inline memory transfer service for buffer mapping. The transfer for writeBuffer and writeTexture will be optimized further in Chrome, and the inline memory transfer service is currently used only in tests. Bug: chromium:1123861, chromium:951558 Change-Id: I02491a44e653e2383174958d9c3d4a4db6fd7bde Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/28882 Commit-Queue: Austin Eng <enga@chromium.org> Reviewed-by: Stephen White <senorblanco@chromium.org>
95 lines
3.7 KiB
C++
95 lines
3.7 KiB
C++
//* Copyright 2019 The Dawn Authors
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//*
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//* Licensed under the Apache License, Version 2.0 (the "License");
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//* you may not use this file except in compliance with the License.
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//* You may obtain a copy of the License at
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//*
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//* http://www.apache.org/licenses/LICENSE-2.0
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//*
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//* Unless required by applicable law or agreed to in writing, software
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//* distributed under the License is distributed on an "AS IS" BASIS,
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//* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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//* See the License for the specific language governing permissions and
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//* limitations under the License.
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#include "common/Assert.h"
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#include "dawn_wire/client/Client.h"
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#include <string>
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namespace dawn_wire { namespace client {
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{% for command in cmd_records["return command"] %}
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bool Client::Handle{{command.name.CamelCase()}}(const volatile char** commands, size_t* size) {
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Return{{command.name.CamelCase()}}Cmd cmd;
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DeserializeResult deserializeResult = cmd.Deserialize(commands, size, &mAllocator);
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if (deserializeResult == DeserializeResult::FatalError) {
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return false;
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}
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{% for member in command.members if member.handle_type %}
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{% set Type = member.handle_type.name.CamelCase() %}
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{% set name = as_varName(member.name) %}
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{% if member.type.dict_name == "ObjectHandle" %}
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{{Type}}* {{name}} = {{Type}}Allocator().GetObject(cmd.{{name}}.id);
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uint32_t {{name}}Generation = {{Type}}Allocator().GetGeneration(cmd.{{name}}.id);
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if ({{name}}Generation != cmd.{{name}}.generation) {
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{{name}} = nullptr;
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}
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{% endif %}
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{% endfor %}
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return Do{{command.name.CamelCase()}}(
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{%- for member in command.members -%}
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{%- if member.handle_type -%}
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{{as_varName(member.name)}}
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{%- else -%}
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cmd.{{as_varName(member.name)}}
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{%- endif -%}
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{%- if not loop.last -%}, {% endif %}
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{%- endfor -%}
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);
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}
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{% endfor %}
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const volatile char* Client::HandleCommandsImpl(const volatile char* commands, size_t size) {
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while (size >= sizeof(CmdHeader) + sizeof(ReturnWireCmd)) {
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// Start by chunked command handling, if it is done, then it means the whole buffer
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// was consumed by it, so we return a pointer to the end of the commands.
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switch (HandleChunkedCommands(commands, size)) {
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case ChunkedCommandsResult::Consumed:
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return commands + size;
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case ChunkedCommandsResult::Error:
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return nullptr;
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case ChunkedCommandsResult::Passthrough:
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break;
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}
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ReturnWireCmd cmdId = *reinterpret_cast<const volatile ReturnWireCmd*>(commands + sizeof(CmdHeader));
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bool success = false;
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switch (cmdId) {
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{% for command in cmd_records["return command"] %}
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{% set Suffix = command.name.CamelCase() %}
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case ReturnWireCmd::{{Suffix}}:
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success = Handle{{Suffix}}(&commands, &size);
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break;
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{% endfor %}
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default:
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success = false;
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}
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if (!success) {
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return nullptr;
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}
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mAllocator.Reset();
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}
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if (size != 0) {
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return nullptr;
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}
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return commands;
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}
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}} // namespace dawn_wire::client
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