mirror of
https://github.com/hrydgard/ppsspp.git
synced 2024-11-24 22:10:01 +00:00
305 lines
7.7 KiB
C++
305 lines
7.7 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 <vector>
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#include "Common/StdMutex.h"
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#include "Common/FileUtil.h"
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#include "Core/SaveState.h"
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#include "Core/Config.h"
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#include "Core/Core.h"
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#include "Core/CoreTiming.h"
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#include "Core/Host.h"
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#include "Core/System.h"
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#include "Core/HLE/HLE.h"
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#include "Core/HLE/sceKernel.h"
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#include "HW/MemoryStick.h"
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#include "Core/MemMap.h"
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#include "Core/MIPS/MIPS.h"
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#include "Core/MIPS/JitCommon/JitCommon.h"
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#include "UI/OnScreenDisplay.h"
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#include "i18n/i18n.h"
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namespace SaveState
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{
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struct SaveStart
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{
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void DoState(PointerWrap &p);
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};
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enum OperationType
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{
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SAVESTATE_SAVE,
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SAVESTATE_LOAD,
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SAVESTATE_VERIFY,
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};
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struct Operation
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{
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Operation(OperationType t, const std::string &f, Callback cb, void *cbUserData_)
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: type(t), filename(f), callback(cb), cbUserData(cbUserData_)
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{
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}
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OperationType type;
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std::string filename;
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Callback callback;
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void *cbUserData;
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};
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static bool needsProcess = false;
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static std::vector<Operation> pending;
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static std::recursive_mutex mutex;
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void SaveStart::DoState(PointerWrap &p)
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{
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auto s = p.Section("SaveStart", 1);
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if (!s)
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return;
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// Gotta do CoreTiming first since we'll restore into it.
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CoreTiming::DoState(p);
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Memory::DoState(p);
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MemoryStick_DoState(p);
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currentMIPS->DoState(p);
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HLEDoState(p);
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__KernelDoState(p);
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// Kernel object destructors might close open files, so do the filesystem last.
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pspFileSystem.DoState(p);
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}
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void Enqueue(SaveState::Operation op)
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{
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std::lock_guard<std::recursive_mutex> guard(mutex);
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pending.push_back(op);
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// Don't actually run it until next frame.
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// It's possible there might be a duplicate but it won't hurt us.
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needsProcess = true;
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Core_UpdateSingleStep();
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}
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void Load(const std::string &filename, Callback callback, void *cbUserData)
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{
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Enqueue(Operation(SAVESTATE_LOAD, filename, callback, cbUserData));
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}
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void Save(const std::string &filename, Callback callback, void *cbUserData)
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{
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Enqueue(Operation(SAVESTATE_SAVE, filename, callback, cbUserData));
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}
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void Verify(Callback callback, void *cbUserData)
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{
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Enqueue(Operation(SAVESTATE_VERIFY, std::string(""), callback, cbUserData));
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}
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// Slot utilities
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std::string GenerateSaveSlotFilename(int slot)
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{
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char discID[256];
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char temp[256];
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sprintf(discID, "%s_%s",
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g_paramSFO.GetValueString("DISC_ID").c_str(),
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g_paramSFO.GetValueString("DISC_VERSION").c_str());
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sprintf(temp, "ms0:/PSP/PPSSPP_STATE/%s_%i.ppst", discID, slot);
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std::string hostPath;
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if (pspFileSystem.GetHostPath(std::string(temp), hostPath)) {
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return hostPath;
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} else {
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return "";
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}
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}
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void LoadSlot(int slot, Callback callback, void *cbUserData)
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{
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std::string fn = GenerateSaveSlotFilename(slot);
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if (!fn.empty()) {
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Load(fn, callback, cbUserData);
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} else {
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I18NCategory *s = GetI18NCategory("Screen");
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osm.Show("Failed to load state. Error in the file system.", 2.0);
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if (callback)
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(*callback)(false, cbUserData);
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}
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}
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void SaveSlot(int slot, Callback callback, void *cbUserData)
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{
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std::string fn = GenerateSaveSlotFilename(slot);
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if (!fn.empty()) {
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Save(fn, callback, cbUserData);
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} else {
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I18NCategory *s = GetI18NCategory("Screen");
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osm.Show("Failed to save state. Error in the file system.", 2.0);
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if (callback)
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(*callback)(false, cbUserData);
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}
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}
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bool HasSaveInSlot(int slot)
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{
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std::string fn = GenerateSaveSlotFilename(slot);
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return File::Exists(fn);
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}
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bool operator < (const tm &t1, const tm &t2) {
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if (t1.tm_year < t2.tm_year) return true;
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if (t1.tm_year > t2.tm_year) return false;
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if (t1.tm_mon < t2.tm_mon) return true;
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if (t1.tm_mon > t2.tm_mon) return false;
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if (t1.tm_mday < t2.tm_mday) return true;
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if (t1.tm_mday > t2.tm_mday) return false;
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if (t1.tm_hour < t2.tm_hour) return true;
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if (t1.tm_hour > t2.tm_hour) return false;
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if (t1.tm_min < t2.tm_min) return true;
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if (t1.tm_min > t2.tm_min) return false;
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if (t1.tm_sec < t2.tm_sec) return true;
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if (t1.tm_sec > t2.tm_sec) return false;
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return false;
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}
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int GetMostRecentSaveSlot() {
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int newestSlot = -1;
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tm newestDate = {0};
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for (int i = 0; i < SAVESTATESLOTS; i++) {
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std::string fn = GenerateSaveSlotFilename(i);
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if (File::Exists(fn)) {
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tm time = File::GetModifTime(fn);
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if (newestDate < time) {
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newestDate = time;
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newestSlot = i;
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}
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}
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}
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return newestSlot;
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}
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std::vector<Operation> Flush()
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{
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std::lock_guard<std::recursive_mutex> guard(mutex);
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std::vector<Operation> copy = pending;
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pending.clear();
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return copy;
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}
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void HandleFailure()
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{
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PSP_Shutdown();
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std::string resetError;
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if (!PSP_Init(PSP_CoreParameter(), &resetError))
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{
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ERROR_LOG(BOOT, "Error resetting: %s", resetError.c_str());
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// TODO: This probably doesn't clean up well enough.
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Core_Stop();
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return;
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}
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host->BootDone();
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host->UpdateDisassembly();
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}
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void Process()
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{
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if (!needsProcess)
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return;
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needsProcess = false;
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if (!__KernelIsRunning())
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{
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ERROR_LOG(COMMON, "Savestate failure: Unable to load without kernel, this should never happen.");
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return;
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}
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std::vector<Operation> operations = Flush();
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SaveStart state;
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for (size_t i = 0, n = operations.size(); i < n; ++i)
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{
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Operation &op = operations[i];
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CChunkFileReader::Error result;
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bool callbackResult;
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std::string reason;
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I18NCategory *s = GetI18NCategory("Screen");
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switch (op.type)
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{
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case SAVESTATE_LOAD:
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if (MIPSComp::jit)
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MIPSComp::jit->ClearCache();
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INFO_LOG(COMMON, "Loading state from %s", op.filename.c_str());
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result = CChunkFileReader::Load(op.filename, REVISION, PPSSPP_GIT_VERSION, state, &reason);
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if (result == CChunkFileReader::ERROR_NONE) {
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osm.Show(s->T("Loaded State"), 2.0);
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callbackResult = true;
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} else if (result == CChunkFileReader::ERROR_BROKEN_STATE) {
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HandleFailure();
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callbackResult = false;
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} else {
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osm.Show(s->T(reason.c_str(), "Load savestate failed"), 2.0);
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callbackResult = false;
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}
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break;
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case SAVESTATE_SAVE:
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if (MIPSComp::jit)
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MIPSComp::jit->ClearCache();
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INFO_LOG(COMMON, "Saving state to %s", op.filename.c_str());
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result = CChunkFileReader::Save(op.filename, REVISION, PPSSPP_GIT_VERSION, state);
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if (result == CChunkFileReader::ERROR_NONE) {
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osm.Show(s->T("Saved State"), 2.0);
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callbackResult = true;
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} else if (result == CChunkFileReader::ERROR_BROKEN_STATE) {
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HandleFailure();
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callbackResult = false;
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} else {
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osm.Show(s->T("Save State Failed"), 2.0);
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callbackResult = false;
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}
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break;
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case SAVESTATE_VERIFY:
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INFO_LOG(COMMON, "Verifying save state system");
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callbackResult = CChunkFileReader::Verify(state) == CChunkFileReader::ERROR_NONE;
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break;
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default:
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ERROR_LOG(COMMON, "Savestate failure: unknown operation type %d", op.type);
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callbackResult = false;
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break;
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}
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if (op.callback)
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op.callback(callbackResult, op.cbUserData);
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}
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}
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void Init()
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{
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// Make sure there's a directory for save slots
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pspFileSystem.MkDir("ms0:/PSP/PPSSPP_STATE");
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std::lock_guard<std::recursive_mutex> guard(mutex);
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}
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}
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