151 lines
3.7 KiB
C++
151 lines
3.7 KiB
C++
/*
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* Copyright (C) 2018 The Android Open Source Project
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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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*/
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#pragma once
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#undef NDEBUG
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#include <cassert>
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#include <condition_variable>
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#include <cstdint>
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#include <map>
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#include <mutex>
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#include <string>
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#include <thread>
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#include "GLESv1.h"
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#include "GLESv3.h"
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#include "RenderControl.h"
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#include "Resource.h"
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struct EglContext;
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struct Context;
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typedef void (*PFNSUBMITCMD)(Context*, char*, size_t, int);
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struct Context {
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static std::map<uint32_t, Context*> map;
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Context(uint32_t handle_, const char* name_, uint32_t nlen_, PFNSUBMITCMD pfnProcessCmd_,
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EGLDisplay dpy_)
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: render_control(this, dpy_), worker(), name(std::string(name_, nlen_)), handle(handle_),
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pfnProcessCmd(pfnProcessCmd_) {
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map.emplace(handle, this);
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reset();
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}
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~Context() {
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{
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std::lock_guard<std::mutex> lk(m);
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killWorker = true;
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}
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cv.notify_one();
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if (worker.joinable())
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worker.join();
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map.erase(handle);
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}
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Context* bind(EglContext* ctx_) {
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for (auto const& it : Context::map) {
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Context* ctx = it.second;
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if (ctx == this)
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continue;
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if (ctx->ctx == ctx_)
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return ctx;
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}
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ctx = ctx_;
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return nullptr;
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}
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void unbind() {
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ctx = nullptr;
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}
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void setPidTid(int pid_, int tid_) {
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if (pid != pid_ && tid != tid_) {
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assert(!worker.joinable() && "Changing pid/tid is not allowed");
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worker = std::thread(&Context::worker_func, this);
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}
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pid = pid_;
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tid = tid_;
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}
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void submitCommand(void* buf, size_t bufSize) {
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char* cmdBufCopy = new char[bufSize];
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memcpy(cmdBufCopy, buf, bufSize);
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{
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std::lock_guard<std::mutex> lk(m);
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cmdBufSize = bufSize;
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cmdBuf = cmdBufCopy;
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}
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cv.notify_one();
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}
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void setFence(int fence_) {
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{
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std::lock_guard<std::mutex> lk(m);
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fence = fence_;
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if (!worker.joinable())
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processCmd();
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}
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cv.notify_one();
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}
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std::map<uint32_t, Resource*> resource_map;
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ChecksumCalculator checksum_calc;
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RenderControl render_control;
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Resource* cmd_resp = nullptr;
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EglContext* ctx = nullptr;
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std::thread worker;
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std::string name;
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uint32_t handle;
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GLESv1 gles1;
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GLESv3 gles3;
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int pid = 0;
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int tid = 0;
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private:
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std::condition_variable cv;
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PFNSUBMITCMD pfnProcessCmd;
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bool killWorker = false;
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size_t cmdBufSize;
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char* cmdBuf;
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std::mutex m;
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int fence;
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void reset() {
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cmdBuf = nullptr;
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cmdBufSize = 0U;
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fence = 0;
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}
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void worker_func() {
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while (!killWorker) {
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std::unique_lock<std::mutex> lk(m);
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cv.wait(lk, [this] { return killWorker || (cmdBuf && fence); });
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if (!killWorker)
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processCmd();
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lk.unlock();
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}
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}
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void processCmd() {
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pfnProcessCmd(this, cmdBuf, cmdBufSize, fence);
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delete cmdBuf;
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reset();
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}
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};
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