117 lines
2.4 KiB
C++
117 lines
2.4 KiB
C++
#include "pithread.h"
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PIThread::PIThread(bool startNow, int timer_delay) {
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running = lockRun = false;
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priority_ = piNormal;
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timer = timer_delay;
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if (startNow) start(timer_delay);
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}
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PIThread::~PIThread() {
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if (!running) return;
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pthread_cancel(thread);
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}
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bool PIThread::start(int timer_delay) {
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pthread_attr_t attr;
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terminating = running = false;
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timer = timer_delay;
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pthread_attr_init(&attr);
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pthread_attr_setschedparam(&attr, &sparam);
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if (pthread_create(&thread, &attr, thread_function, this) == 0) {
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running = true;
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return true;
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}
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return false;
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}
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bool PIThread::startOnce() {
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pthread_attr_t attr;
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terminating = running = false;
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pthread_attr_init(&attr);
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pthread_attr_setschedparam(&attr, &sparam);
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if (pthread_create(&thread, &attr, thread_function_once, this) == 0)
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return true;
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return false;
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}
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void * PIThread::thread_function(void * t) {
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PIThread * ct = (PIThread * )t;
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ct->running = true;
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ct->begin();
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while (!ct->terminating) {
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if (ct->lockRun) ct->mutex_.lock();
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ct->run();
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if (ct->lockRun) ct->mutex_.unlock();
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if (ct->timer > 0) msleep(ct->timer);
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}
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ct->end();
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ct->running = false;
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//cout << "thread " << t << " exiting ... " << endl;
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pthread_exit(0);
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return 0;
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}
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void * PIThread::thread_function_once(void * t) {
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PIThread * ct = (PIThread * )t;
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ct->running = true;
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ct->begin();
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if (ct->lockRun) ct->mutex_.lock();
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ct->run();
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if (ct->lockRun) ct->mutex_.unlock();
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ct->end();
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ct->running = false;
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//cout << "thread " << t << " exiting ... " << endl;
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pthread_exit(0);
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return 0;
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}
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void PIThread::setPriority(PIThread::Priority prior) {
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priority_ = prior;
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#ifndef LINUX
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sparam.sched_priority = (int)priority_;
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#else
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sparam.__sched_priority = (int)priority_;
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#endif
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if (!running) return;
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pthread_getschedparam(thread, &policy, &sparam);
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pthread_setschedparam(thread, policy, &sparam);
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}
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bool PIThread::waitForFinish(int timeout_msecs) {
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if (timeout_msecs < 0) {
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while (running)
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msleep(1);
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return true;
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}
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int cnt = 0;
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while (running && cnt < timeout_msecs) {
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msleep(1);
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++cnt;
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}
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return cnt < timeout_msecs;
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}
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bool PIThread::waitForStart(int timeout_msecs) {
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if (timeout_msecs < 0) {
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while (!running)
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msleep(1);
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return true;
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}
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int cnt = 0;
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while (!running && cnt < timeout_msecs) {
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msleep(1);
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++cnt;
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}
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return cnt < timeout_msecs;
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}
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