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/*
* misc.c
*
* Description:
* This translation unit implements miscellaneous thread functions.
*/
#include <errno.h>
#include "pthread.h"
int
pthread_once(pthread_once_t *once_control,
void (*init_routine)(void))
{
/* A flag, allocated per invocation, that indicates if the atomic
test-and-set occured. */
unsigned short flag = 0;
if (once_control == NULL || init_routine == NULL)
{
return EINVAL;
}
/* An atomic test-and-set of the "once" flag. */
pthread_mutex_lock(&once_control->lock);
if (once_control->flag == 0)
{
flag = once_control->flag = 1;
}
pthread_mutex_unlock(&once_control->lock);
if (flag)
{
/* Run the init routine. */
init_routine();
}
return 0;
}
pthread_t
pthread_self(void)
{
pthread_t ret;
/* This TLS index is allocated on DLL load by dll.c */
extern DWORD _pthread_threadID_TlsIndex;
ret = (pthread_t) TlsGetValue(_pthread_threadID_TlsIndex);
if (ret == 0)
{
/* FIXME: Oh no! This can't happen. */
}
return ret;
}
int
pthread_equal(pthread_t t1, pthread_t t2)
{
return (t1 == t2);
}

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