// Copyright (c) 2012- PPSSPP Project.

// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, version 2.0 or later versions.

// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License 2.0 for more details.

// A copy of the GPL 2.0 should have been included with the program.
// If not, see http://www.gnu.org/licenses/

// Official git repository and contact information can be found at
// https://github.com/hrydgard/ppsspp and http://www.ppsspp.org/.

#pragma once

#include <map>
#include <vector>

#include "Core/HLE/sceKernel.h"
#include "Core/HLE/ErrorCodes.h"

class PointerWrap;

struct NativeMutex {
	SceSize_le size;
	char name[KERNELOBJECT_MAX_NAME_LENGTH + 1];
	SceUInt_le attr;
	s32_le initialCount;
	s32_le lockLevel;
	SceUID_le lockThread;
	// Not kept up to date.
	s32_le numWaitThreads;
};

// Exposed here (rather than kept private to sceKernelMutex.cpp) so the WebSocket debugger can
// read a live object's state directly via kernelObjects.Get<PSPMutex>()/Iterate<PSPMutex>() - see
// HLEKernelObjectSubscriber.cpp. That's a read-only use: nothing outside this file should call
// DoState() or otherwise mutate a PSPMutex - it's public here for this file's own use as before,
// not an invitation to write to it from elsewhere.
struct PSPMutex : public KernelObject {
	const char *GetName() override { return nm.name; }
	const char *GetTypeName() override { return GetStaticTypeName(); }
	static const char *GetStaticTypeName() { return "Mutex"; }
	static u32 GetMissingErrorCode() { return SCE_MUTEX_ERROR_NO_SUCH_MUTEX; }
	static int GetStaticIDType() { return SCE_KERNEL_TMID_Mutex; }
	int GetIDType() const override { return SCE_KERNEL_TMID_Mutex; }

	void DoState(PointerWrap &p) override;

	NativeMutex nm;
	std::vector<SceUID> waitingThreads;
	// Key is the callback id it was for, or if no callback, the thread id.
	std::map<SceUID, u64> pausedWaits;
};

int sceKernelCancelMutex(SceUID uid, int count, u32 numWaitThreadsPtr);
int sceKernelCreateMutex(const char *name, u32 attr, int initialCount, u32 optionsPtr);
int sceKernelDeleteMutex(SceUID id);
int sceKernelLockMutex(SceUID id, int count, u32 timeoutPtr);
int sceKernelLockMutexCB(SceUID id, int count, u32 timeoutPtr);
int sceKernelTryLockMutex(SceUID id, int count);
int sceKernelUnlockMutex(SceUID id, int count);
int sceKernelReferMutexStatus(SceUID id, u32 infoAddr);

int sceKernelCreateLwMutex(u32 workareaPtr, const char *name, u32 attr, int initialCount, u32 optionsPtr);
int sceKernelDeleteLwMutex(u32 workareaPtr);
int sceKernelTryLockLwMutex(u32 workareaPtr, int count);
int sceKernelTryLockLwMutex_600(u32 workareaPtr, int count);
int sceKernelLockLwMutex(u32 workareaPtr, int count, u32 timeoutPtr);
int sceKernelLockLwMutexCB(u32 workareaPtr, int count, u32 timeoutPtr);
int sceKernelUnlockLwMutex(u32 workareaPtr, int count);
int sceKernelReferLwMutexStatusByID(SceUID uid, u32 infoPtr);
int sceKernelReferLwMutexStatus(u32 workareaPtr, u32 infoPtr);

void __KernelMutexTimeout(u64 userdata, int cyclesLate);
void __KernelLwMutexTimeout(u64 userdata, int cyclesLate);
void __KernelMutexThreadEnd(SceUID thread);

void __KernelMutexInit();
void __KernelMutexDoState(PointerWrap &p);
void __KernelMutexShutdown();
KernelObject *__KernelMutexObject();
KernelObject *__KernelLwMutexObject();