At Tue, 26 Mar 2002 17:12:01 -0800, Matt Watson <email@hidden> wrote:
>
> Please post a small example. How are you using pthread_cond_wait()?
pthread_cond_t condVar;
pthread_mutex_t mutexVar;
...
if (pthread_cond_init(&condVar, NULL) != 0) {
CantHappen();
}
if (pthread_mutex_init(&mutexVar, NULL) != 0) {
CantHappen();
}
if (pthread_mutex_lock(&mutexVar) != 0) {
CantHappen();
}
if (pthread_cond_wait(&condVar, &mutexVar) != 0) {
CantHappen();
}
> How are the mutexes and conditions initialized? If you attach in gdb,
> where is it spinning? This could be due to memory corruption, where one
> of the internal pthread spin locks has been set and will never unlock.
When I attach with gdb and then interrupt, it is always in
semaphore_wait_signal_trap() - from `bt`:
#0 0x7003f4c8 in semaphore_wait_signal_trap ()
#1 0x7003f2c8 in _pthread_cond_wait ()
#2 0x0048b734 in os_StartKernel (memoryAddres=0x5690a08 "", memorySize=104850936, systemStackSize=4096, interruptStackSize=0) at foo.c:744
#3 0x00489df4 in os_StartTheWorld () at bar.c:477
#4 0x00002a2c in main (argc=2, argv=0xbffff610) at main.c:388
#5 0x00002340 in _start ()
#6 0x00002170 in start ()
-Conrad
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