mirror of
https://github.com/libretro/ppsspp.git
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d6a113809b
This allows the filesystems to more accurately control timing. But they're not actually doing it yet (same timing as before.)
101 lines
2.5 KiB
C++
101 lines
2.5 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 <map>
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#include <set>
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#include "native/base/mutex.h"
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#include "Core/ThreadEventQueue.h"
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class NoBase {
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};
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enum AsyncIOEventType {
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IO_EVENT_INVALID,
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IO_EVENT_SYNC,
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IO_EVENT_FINISH,
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IO_EVENT_READ,
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IO_EVENT_WRITE,
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};
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struct AsyncIOEvent {
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AsyncIOEvent(AsyncIOEventType t) : type(t) {}
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AsyncIOEventType type;
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u32 handle;
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u8 *buf;
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size_t bytes;
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operator AsyncIOEventType() const {
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return type;
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}
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};
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struct AsyncIOResult {
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AsyncIOResult() : result(0), finishTicks(0) {
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}
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explicit AsyncIOResult(s64 r) : result(r), finishTicks(0) {
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}
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AsyncIOResult(s64 r, int usec) : result(r) {
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finishTicks = CoreTiming::GetTicks() + usToCycles(usec);
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}
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void DoState(PointerWrap &p) {
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auto s = p.Section("AsyncIOResult", 1);
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if (!s)
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return;
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p.Do(result);
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p.Do(finishTicks);
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}
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s64 result;
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u64 finishTicks;
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};
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typedef ThreadEventQueue<NoBase, AsyncIOEvent, AsyncIOEventType, IO_EVENT_INVALID, IO_EVENT_SYNC, IO_EVENT_FINISH> IOThreadEventQueue;
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class AsyncIOManager : public IOThreadEventQueue {
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public:
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void DoState(PointerWrap &p);
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bool HasOperation(u32 handle);
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void ScheduleOperation(AsyncIOEvent ev);
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void Shutdown();
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bool HasResult(u32 handle);
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bool PopResult(u32 handle, AsyncIOResult &result);
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bool ReadResult(u32 handle, AsyncIOResult &result);
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bool WaitResult(u32 handle, AsyncIOResult &result);
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u64 ResultFinishTicks(u32 handle);
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protected:
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virtual void ProcessEvent(AsyncIOEvent ref);
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virtual bool ShouldExitEventLoop() {
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return coreState == CORE_ERROR || coreState == CORE_POWERDOWN;
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}
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private:
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void Read(u32 handle, u8 *buf, size_t bytes);
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void Write(u32 handle, u8 *buf, size_t bytes);
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void EventResult(u32 handle, AsyncIOResult result);
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recursive_mutex resultsLock_;
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condition_variable resultsWait_;
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std::set<u32> resultsPending_;
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std::map<u32, AsyncIOResult> results_;
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}; |