66 lines
1.6 KiB
C++
66 lines
1.6 KiB
C++
#ifndef PITHREAD_H
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#define PITHREAD_H
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#include <pthread.h>
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#include <signal.h>
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#include "pimutex.h"
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#ifdef WINDOWS
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inline void msleep(int msecs) {Sleep(msecs);}
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#else
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inline void msleep(int msecs) {usleep(msecs * 1000);}
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#endif
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class PIThread {
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public:
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PIThread(bool startNow = false, int timer_delay = -1);
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~PIThread();
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#ifdef QNX
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enum Priority {piHighest = 12,
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piHigh = 11,
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piNormal = 10,
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piLow = 9,
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piLowerst = 8 };
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#else
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enum Priority {piHighest = -2,
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piHigh = -1,
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piNormal = 0,
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piLow = 1,
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piLowerst = 2 };
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#endif
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bool start(int timer_delay = -1);
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bool startOnce();
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void stop(bool wait = false) {terminating = true; if (wait) waitForFinish();}
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void terminate() {kill(thread, SIGKILL); end(); running = false;}
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void setPriority(PIThread::Priority prior);
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PIThread::Priority priority() const {return priority_;}
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bool isRunning() const {return running;}
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bool waitForFinish(int timeout_msecs = -1);
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bool waitForStart(int timeout_msecs = -1);
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void needLockRun(bool need) {lockRun = need;}
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void lock() {mutex_.lock();}
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void unlock() {mutex_.unlock();}
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PIMutex & mutex() {return mutex_;}
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private:
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virtual void begin() {;} // executed at start
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virtual void run() {;} // main loop
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virtual void end() {;} // executed at finish
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protected:
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static void * thread_function(void * t);
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static void * thread_function_once(void * t);
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volatile bool terminating, running, lockRun;
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int timer, policy;
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pthread_t thread;
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PIMutex mutex_;
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sched_param sparam;
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PIThread::Priority priority_;
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};
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#endif // PITHREAD_H
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