mirror of
https://github.com/libretro/ppsspp.git
synced 2024-11-30 20:01:00 +00:00
378 lines
9.4 KiB
C++
378 lines
9.4 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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// UNFINISHED
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#include "HLE.h"
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#include "../MIPS/MIPS.h"
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#include "../../Core/CoreTiming.h"
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#include "sceKernel.h"
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#include "sceKernelMutex.h"
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#include "sceKernelThread.h"
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#define PSP_MUTEX_ATTR_FIFO 0
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#define PSP_MUTEX_ATTR_PRIORITY 0x100
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#define PSP_MUTEX_ATTR_ALLOW_RECURSIVE 0x200
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// Not sure about the names of these
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#define PSP_MUTEX_ERROR_NO_SUCH_MUTEX 0x800201C3
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#define PSP_MUTEX_ERROR_TRYLOCK_FAILED 0x800201C4
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#define PSP_MUTEX_ERROR_NOT_LOCKED 0x800201C5
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#define PSP_MUTEX_ERROR_LOCK_OVERFLOW 0x800201C6
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#define PSP_MUTEX_ERROR_UNLOCK_UNDERFLOW 0x800201C7
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#define PSP_MUTEX_ERROR_ALREADY_LOCKED 0x800201C8
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// Guesswork - not exposed anyway
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struct NativeMutex
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{
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SceSize size;
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char name[32];
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SceUInt attr;
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int lockLevel;
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int lockThread; // The thread holding the lock
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};
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struct Mutex : public KernelObject
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{
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const char *GetName() {return nm.name;}
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const char *GetTypeName() {return "Mutex";}
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static u32 GetMissingErrorCode() { return PSP_MUTEX_ERROR_NO_SUCH_MUTEX; } // Not sure?
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int GetIDType() const { return SCE_KERNEL_TMID_Mutex; }
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NativeMutex nm;
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std::vector<SceUID> waitingThreads;
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int waitTimer;
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};
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struct LWMutex : public KernelObject
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{
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const char *GetName() {return nm.name;}
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const char *GetTypeName() {return "LWMutex";}
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static u32 GetMissingErrorCode() { return SCE_KERNEL_ERROR_UNKNOWN_SEMID; } // Not sure?
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int GetIDType() const { return SCE_KERNEL_TMID_LwMutex; }
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NativeMutex nm;
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std::vector<SceUID> waitingThreads;
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};
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void sceKernelCreateMutex(const char *name, u32 attr, int initialCount, u32 optionsPtr)
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{
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u32 error = 0;
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if (!name)
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error = SCE_KERNEL_ERROR_ERROR;
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else if (initialCount < 0)
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error = SCE_KERNEL_ERROR_ILLEGAL_COUNT;
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else if ((attr & PSP_MUTEX_ATTR_ALLOW_RECURSIVE) == 0 && initialCount > 1)
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error = SCE_KERNEL_ERROR_ILLEGAL_COUNT;
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if (error)
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{
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RETURN(error);
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return;
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}
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DEBUG_LOG(HLE,"sceKernelCreateMutex(%s, %08x, %d, %08x)", name, attr, initialCount, optionsPtr);
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Mutex *mutex = new Mutex();
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SceUID id = kernelObjects.Create(mutex);
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mutex->nm.size = sizeof(mutex);
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strncpy(mutex->nm.name, name, 31);
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mutex->nm.name[31] = 0;
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mutex->nm.attr = attr;
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mutex->nm.lockLevel = initialCount;
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if (mutex->nm.lockLevel == 0)
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mutex->nm.lockThread = -1;
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else
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mutex->nm.lockThread = __KernelGetCurThread();
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mutex->waitTimer = 0;
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if (optionsPtr != 0)
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WARN_LOG(HLE,"sceKernelCreateMutex(%s) unsupported options parameter.", name);
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RETURN(id);
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__KernelReSchedule("mutex created");
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}
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void sceKernelDeleteMutex(SceUID id)
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{
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DEBUG_LOG(HLE,"sceKernelDeleteMutex(%i)", id);
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u32 error;
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Mutex *mutex = kernelObjects.Get<Mutex>(id, error);
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if (mutex)
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{
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// Kill the timer, they're waking up now.
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if (mutex->waitTimer != 0)
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{
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CoreTiming::RemoveEvent(mutex->waitTimer);
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mutex->waitTimer = 0;
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}
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std::vector<SceUID>::iterator iter, end;
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for (iter = mutex->waitingThreads.begin(), end = mutex->waitingThreads.end(); iter != end; ++iter)
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{
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SceUID threadID = *iter;
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__KernelResumeThreadFromWait(threadID, SCE_KERNEL_ERROR_WAIT_DELETE);
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// TODO: set timeoutPtr.
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}
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mutex->waitingThreads.empty();
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RETURN(kernelObjects.Destroy<Mutex>(id));
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__KernelReSchedule("mutex deleted");
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}
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else
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RETURN(error);
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}
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bool __KernelLockMutex(Mutex *mutex, int count, u32 &error)
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{
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if (!error)
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{
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if (count <= 0)
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error = SCE_KERNEL_ERROR_ILLEGAL_COUNT;
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else if (count > 1 && !(mutex->nm.attr & PSP_MUTEX_ATTR_ALLOW_RECURSIVE))
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error = SCE_KERNEL_ERROR_ILLEGAL_COUNT;
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// Two positive ints will always sum to negative.
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else if (count + mutex->nm.lockLevel < 0)
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error = PSP_MUTEX_ERROR_LOCK_OVERFLOW;
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}
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if (error)
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return false;
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if (mutex->nm.lockLevel == 0)
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{
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mutex->nm.lockLevel += count;
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mutex->nm.lockThread = __KernelGetCurThread();
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// Nobody had it locked - no need to block
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return true;
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}
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if (mutex->nm.lockThread == __KernelGetCurThread())
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{
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// Recursive mutex, let's just increase the lock count and keep going
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if ((mutex->nm.attr & PSP_MUTEX_ATTR_ALLOW_RECURSIVE))
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{
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mutex->nm.lockLevel += count;
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return true;
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}
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else
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{
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error = PSP_MUTEX_ERROR_ALREADY_LOCKED;
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return false;
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}
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}
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return false;
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}
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void __KernelMutexTimeout(u64 userdata, int cyclesLate)
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{
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SceUID threadID = (SceUID)userdata;
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// TODO: set timeoutPtr.
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__KernelResumeThreadFromWait(threadID, SCE_KERNEL_ERROR_WAIT_TIMEOUT);
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}
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void __kernelWaitMutex(Mutex *mutex, u32 timeoutPtr)
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{
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if (timeoutPtr == 0)
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return;
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if (mutex->waitTimer == 0)
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mutex->waitTimer = CoreTiming::RegisterEvent("ScheduledTimeout", &__KernelMutexTimeout);
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// This should call __KernelMutexTimeout() later, unless we cancel it.
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int micro = (int) Memory::Read_U32(timeoutPtr);
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CoreTiming::ScheduleEvent(usToCycles(micro), mutex->waitTimer, __KernelGetCurThread());
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}
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// int sceKernelLockMutex(SceUID id, int count, int *timeout)
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// void because it changes threads.
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void sceKernelLockMutex(SceUID id, int count, u32 timeoutPtr)
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{
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DEBUG_LOG(HLE,"sceKernelLockMutex(%i, %i, %08x)", id, count, timeoutPtr);
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u32 error;
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Mutex *mutex = kernelObjects.Get<Mutex>(id, error);
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if (__KernelLockMutex(mutex, count, error))
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{
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RETURN(0);
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__KernelReSchedule("mutex locked");
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}
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else if (error)
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RETURN(error);
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else
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{
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mutex->waitingThreads.push_back(__KernelGetCurThread());
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__kernelWaitMutex(mutex, timeoutPtr);
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__KernelWaitCurThread(WAITTYPE_MUTEX, id, count, timeoutPtr, false);
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}
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}
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// int sceKernelLockMutexCB(SceUID id, int count, int *timeout)
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// void because it changes threads.
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void sceKernelLockMutexCB(SceUID id, int count, u32 timeoutPtr)
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{
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DEBUG_LOG(HLE,"sceKernelLockMutexCB(%i, %i, %08x)", id, count, timeoutPtr);
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u32 error;
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Mutex *mutex = kernelObjects.Get<Mutex>(id, error);
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if (__KernelLockMutex(mutex, count, error))
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{
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RETURN(0);
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__KernelReSchedule("mutex locked");
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}
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else if (error)
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RETURN(error);
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else
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{
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mutex->waitingThreads.push_back(__KernelGetCurThread());
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__kernelWaitMutex(mutex, timeoutPtr);
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__KernelWaitCurThread(WAITTYPE_MUTEX, id, count, timeoutPtr, true);
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__KernelCheckCallbacks();
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}
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__KernelReSchedule("mutex locked");
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}
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// int sceKernelTryLockMutex(SceUID id, int count)
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// void because it changes threads.
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void sceKernelTryLockMutex(SceUID id, int count)
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{
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DEBUG_LOG(HLE,"sceKernelTryLockMutex(%i, %i)", id, count);
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u32 error;
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Mutex *mutex = kernelObjects.Get<Mutex>(id, error);
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if (__KernelLockMutex(mutex, count, error))
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{
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RETURN(0);
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__KernelReSchedule("mutex trylocked");
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}
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else if (error)
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RETURN(error);
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else
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RETURN(PSP_MUTEX_ERROR_TRYLOCK_FAILED);
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}
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// int sceKernelUnlockMutex(SceUID id, int count)
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// void because it changes threads.
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void sceKernelUnlockMutex(SceUID id, int count)
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{
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DEBUG_LOG(HLE,"sceKernelUnlockMutex(%i, %i)", id, count);
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u32 error;
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Mutex *mutex = kernelObjects.Get<Mutex>(id, error);
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if (!error)
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{
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if (count <= 0)
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error = SCE_KERNEL_ERROR_ILLEGAL_COUNT;
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else if ((mutex->nm.attr & PSP_MUTEX_ATTR_ALLOW_RECURSIVE) == 0 && count > 1)
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error = SCE_KERNEL_ERROR_ILLEGAL_COUNT;
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else if (mutex->nm.lockLevel == 0)
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error = PSP_MUTEX_ERROR_NOT_LOCKED;
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else if (mutex->nm.lockLevel < count)
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error = PSP_MUTEX_ERROR_UNLOCK_UNDERFLOW;
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}
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if (error)
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{
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RETURN(error);
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return;
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}
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mutex->nm.lockLevel -= count;
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RETURN(0);
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if (mutex->nm.lockLevel == 0)
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{
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mutex->nm.lockThread = -1;
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// TODO: PSP_MUTEX_ATTR_PRIORITY
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bool wokeThreads = false;
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std::vector<SceUID>::iterator iter, end;
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for (iter = mutex->waitingThreads.begin(), end = mutex->waitingThreads.end(); iter != end; ++iter)
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{
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SceUID threadID = *iter;
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int wVal = (int)__KernelGetWaitValue(threadID, error);
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mutex->nm.lockThread = threadID;
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mutex->nm.lockLevel = wVal;
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// Remove any event for this thread.
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// TODO: Only if timeoutPtr?
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if (mutex->waitTimer != 0)
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CoreTiming::UnscheduleEvent(mutex->waitTimer, threadID);
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__KernelResumeThreadFromWait(threadID, 0);
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wokeThreads = true;
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mutex->waitingThreads.erase(iter);
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break;
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}
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__KernelReSchedule("mutex unlocked");
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}
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}
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struct NativeLwMutex
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{
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SceSize size;
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char name[32];
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SceUInt attr;
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SceUID mutexUid;
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SceUInt opaqueWorkAreaAddr;
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int numWaitThreads;
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int locked;
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int threadid; // thread holding the lock
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};
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void sceKernelCreateLwMutex()
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{
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ERROR_LOG(HLE,"UNIMPL sceKernelCreateLwMutex()");
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RETURN(0);
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}
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void sceKernelDeleteLwMutex()
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{
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ERROR_LOG(HLE,"UNIMPL sceKernelDeleteLwMutex()");
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RETURN(0);
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}
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void sceKernelTryLockLwMutex()
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{
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ERROR_LOG(HLE,"UNIMPL sceKernelTryLockLwMutex()");
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RETURN(0);
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}
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void sceKernelLockLwMutex()
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{
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ERROR_LOG(HLE,"UNIMPL sceKernelLockLwMutex()");
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RETURN(0);
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}
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void sceKernelLockLwMutexCB()
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{
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ERROR_LOG(HLE,"UNIMPL sceKernelLockLwMutexCB()");
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RETURN(0);
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}
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void sceKernelUnlockLwMutex()
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{
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ERROR_LOG(HLE,"UNIMPL void sceKernelUnlockLwMutex()");
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RETURN(0);
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} |