mirror of
https://github.com/libretro/ppsspp.git
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122 lines
3.2 KiB
C++
122 lines
3.2 KiB
C++
// Copyright (c) 2012- PPSSPP Project.
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, version 2.0 or later versions.
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License 2.0 for more details.
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// A copy of the GPL 2.0 should have been included with the program.
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// If not, see http://www.gnu.org/licenses/
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// Official git repository and contact information can be found at
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// https://github.com/hrydgard/ppsspp and http://www.ppsspp.org/.
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#include "Common/ChunkFile.h"
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#include "Core/Reporting.h"
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#include "Core/System.h"
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#include "Core/HW/AsyncIOManager.h"
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#include "Core/FileSystems/MetaFileSystem.h"
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bool AsyncIOManager::HasOperation(u32 handle) {
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if (resultsPending_.find(handle) != resultsPending_.end()) {
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return true;
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}
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if (results_.find(handle) != results_.end()) {
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return true;
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}
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return false;
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}
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void AsyncIOManager::ScheduleOperation(AsyncIOEvent ev) {
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{
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lock_guard guard(resultsLock_);
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if (!resultsPending_.insert(ev.handle).second) {
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ERROR_LOG_REPORT(SCEIO, "Scheduling operation for file %d while one is pending (type %d)", ev.handle, ev.type);
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}
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}
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ScheduleEvent(ev);
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}
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void AsyncIOManager::Shutdown() {
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lock_guard guard(resultsLock_);
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resultsPending_.clear();
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results_.clear();
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}
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bool AsyncIOManager::PopResult(u32 handle, AsyncIOResult &result) {
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lock_guard guard(resultsLock_);
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if (results_.find(handle) != results_.end()) {
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result = results_[handle];
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results_.erase(handle);
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resultsPending_.erase(handle);
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return true;
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} else {
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return false;
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}
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}
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bool AsyncIOManager::WaitResult(u32 handle, AsyncIOResult &result) {
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lock_guard guard(resultsLock_);
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ScheduleEvent(IO_EVENT_SYNC);
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while (HasEvents() && ThreadEnabled() && resultsPending_.find(handle) != resultsPending_.end()) {
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if (PopResult(handle, result)) {
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return true;
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}
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resultsWait_.wait_for(resultsLock_, 16);
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}
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if (PopResult(handle, result)) {
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return true;
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}
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return false;
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}
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void AsyncIOManager::ProcessEvent(AsyncIOEvent ev) {
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switch (ev.type) {
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case IO_EVENT_READ:
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Read(ev.handle, ev.buf, ev.bytes);
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break;
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case IO_EVENT_WRITE:
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Write(ev.handle, ev.buf, ev.bytes);
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break;
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default:
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ERROR_LOG_REPORT(SCEIO, "Unsupported IO event type");
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}
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}
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void AsyncIOManager::Read(u32 handle, u8 *buf, size_t bytes) {
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size_t result = pspFileSystem.ReadFile(handle, buf, bytes);
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EventResult(handle, result);
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}
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void AsyncIOManager::Write(u32 handle, u8 *buf, size_t bytes) {
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size_t result = pspFileSystem.WriteFile(handle, buf, bytes);
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EventResult(handle, result);
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}
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void AsyncIOManager::EventResult(u32 handle, AsyncIOResult result) {
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lock_guard guard(resultsLock_);
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if (results_.find(handle) != results_.end()) {
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ERROR_LOG_REPORT(SCEIO, "Overwriting previous result for file action on handle %d", handle);
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}
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results_[handle] = result;
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resultsWait_.notify_one();
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}
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void AsyncIOManager::DoState(PointerWrap &p) {
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auto s = p.Section("AsyncIoManager", 1);
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if (!s)
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return;
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SyncThread();
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lock_guard guard(resultsLock_);
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p.Do(resultsPending_);
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p.Do(results_);
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}
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