pthread_mutex_trylock does not lock
Chris Knight
c.knight@teligent.co.uk
Tue Dec 3 01:37:00 GMT 2002
Hello,
I think I have found a problem in the "pthread_mutex_trylock" call. When I
run the following code both the trylock and lock return immediately. If I
compile this under RedHat 8 it works as I would expect with the trylock
locking the mutex and the lock stopping execution.
I am running the latest version of cygwin under Windows 2000 Pro with the
latest service packs.
/* -------------------------------------------------------------------------
-------- */
#include <pthread.h>
int main (void)
{
pthread_mutex_t accessMutex = PTHREAD_MUTEX_INITIALIZER;
printf ("Init\n");
pthread_mutex_init(&accessMutex, NULL);
printf ("Try lock(%d)\n", pthread_mutex_trylock(&accessMutex));
printf ("Lock(%d)\n", pthread_mutex_lock(&accessMutex));
printf ("We should never get here!");
}
/* -------------------------------------------------------------------------
-------- */
Chris Knight
Development, Teligent Ltd.
Office: +44 (1442) 283818
Mobile: +44 (7971) 646218
Email: c.knight@teligent.co.uk
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