78 lines
1.1 KiB
C++
78 lines
1.1 KiB
C++
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#include "thread.h"
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#define THREAD_STACKSIZE 65536
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#define THREAD_READY 0x01
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#define THREAD_RUNNING 0x02
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#define THREAD_ENDED 0x03
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Thread::Thread()
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: arg(0), tid(0), state(THREAD_READY)
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{}
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Thread::~Thread()
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{
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switch (state) {
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case THREAD_RUNNING:
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cancel();
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case THREAD_ENDED:
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join();
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case THREAD_READY:
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break;
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}
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}
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int Thread::start(void* arg_)
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{
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pthread_attr_t attr;
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if (state != THREAD_READY)
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return -1;
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arg = arg_;
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state = THREAD_RUNNING;
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pthread_attr_init(&attr);
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pthread_attr_setstacksize(&attr, THREAD_STACKSIZE);
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if (pthread_create(&tid, &attr, (Thread::entry), this) != 0) {
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state = THREAD_READY;
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return -1;
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}
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return 0;
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}
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void Thread::cancel()
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{
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pthread_cancel(tid);
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state = THREAD_ENDED;
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}
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bool Thread::isRunning() const
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{
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return (state == THREAD_RUNNING);
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}
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int Thread::join()
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{
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void* retval;
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pthread_join(tid, &retval);
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state = THREAD_READY;
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return (int)retval;
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}
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void* Thread::entry(void* myself)
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{
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Thread* thread = (Thread*)myself;
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int retval = thread->execute(thread->arg);
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thread->state = THREAD_ENDED;
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return (void*)retval;
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}
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