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108 lines
3.3 KiB
C++
108 lines
3.3 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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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 for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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*/
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#ifndef PSP_THREAD_H
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#define PSP_THREAD_H
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#include <pspthreadman.h>
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#include "common/scummsys.h"
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// class to inherit for creating threads
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class PspThreadable {
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protected:
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int _threadId;
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virtual void threadFunction() = 0; // this function will be called when the thread starts
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public:
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PspThreadable() : _threadId(-1) {} // constructor
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virtual ~PspThreadable() {} // destructor
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static int __threadCallback(SceSize, void *__this); // used to get called by sceKernelStartThread() Don't override
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bool threadCreateAndStart(const char *threadName, int priority, int stackSize, bool useVfpu = false);
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};
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// class for thread utils
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class PspThread {
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public:
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// static functions
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static void delayMillis(uint32 ms); // delay the current thread
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static void delayMicros(uint32 us);
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};
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class PspSemaphore {
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private:
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uint32 _handle;
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public:
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PspSemaphore(int initialValue, int maxValue=255);
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~PspSemaphore();
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bool take() { return takeWithTimeOut(0); }
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bool takeWithTimeOut(uint32 timeOut);
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bool give(int num=1);
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bool pollForValue(int value); // check for a certain value
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int numOfWaitingThreads();
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int getValue();
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};
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class PspMutex {
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private:
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PspSemaphore _semaphore;
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int _recursiveCount;
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int _ownerId;
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public:
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PspMutex(bool initialValue) : _semaphore(initialValue ? 1 : 0, 255), _recursiveCount(0), _ownerId(0) {} // initial, max value
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bool lock();
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bool unlock();
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bool poll() { return _semaphore.pollForValue(1); }
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int numOfWaitingThreads() { return _semaphore.numOfWaitingThreads(); }
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bool getValue() { return (bool)_semaphore.getValue(); }
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};
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class PspCondition {
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private:
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PspMutex _mutex;
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int _waitingThreads;
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int _signaledThreads;
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PspSemaphore _waitSem;
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PspSemaphore _doneSem;
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public:
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PspCondition() : _mutex(true), _waitingThreads(0), _signaledThreads(0),
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_waitSem(0), _doneSem(0) {}
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void wait(PspMutex &externalMutex);
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void releaseAll();
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};
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enum ThreadPriority {
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PRIORITY_MAIN_THREAD = 36,
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PRIORITY_TIMER_THREAD = 30,
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PRIORITY_AUDIO_THREAD = 25, // must be higher than timer or we get stuttering
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PRIORITY_POWER_THREAD = 20, // quite a light thread
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PRIORITY_DISPLAY_THREAD = 17 // very light thread for callbacks only
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};
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enum StackSizes {
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STACK_DEFAULT = 4 * 1024,
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STACK_AUDIO_THREAD = 16 * 1024,
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STACK_TIMER_THREAD = 32 * 1024,
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STACK_DISPLAY_THREAD = 2 * 1024,
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STACK_POWER_THREAD = 4 * 1024
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};
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#endif /* PSP_THREADS_H */
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