hlswmaster-ng/thread.cpp

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2006-02-02 16:55:44 +01:00
#include "thread.h"
#define THREAD_STACKSIZE 65536
#define THREAD_READY 0x01
#define THREAD_RUNNING 0x02
#define THREAD_ENDED 0x03
Thread::Thread()
: arg(0), tid(0), state(THREAD_READY)
{}
Thread::~Thread()
{
switch (state) {
case THREAD_RUNNING:
cancel();
case THREAD_ENDED:
join();
case THREAD_READY:
break;
}
}
int Thread::start(void* arg_)
{
pthread_attr_t attr;
if (state != THREAD_READY)
return -1;
arg = arg_;
state = THREAD_RUNNING;
pthread_attr_init(&attr);
pthread_attr_setstacksize(&attr, THREAD_STACKSIZE);
if (pthread_create(&tid, &attr, (Thread::entry), this) != 0) {
state = THREAD_READY;
return -1;
}
return 0;
}
void Thread::cancel()
{
pthread_cancel(tid);
state = THREAD_ENDED;
}
bool Thread::isRunning() const
{
return (state == THREAD_RUNNING);
}
int Thread::join()
{
void* retval;
pthread_join(tid, &retval);
state = THREAD_READY;
return (int)retval;
}
void* Thread::entry(void* myself)
{
Thread* thread = (Thread*)myself;
int retval = thread->execute(thread->arg);
thread->state = THREAD_ENDED;
return (void*)retval;
}