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glibc/nptl/tst-spin4.c
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#include <pthread.h> | |
#include <stdio.h> | |
#include <unistd.h> | |
static int count = 0; | |
static void * | |
thread_add_one (void *arg) | |
{ | |
int tmp; | |
pthread_spinlock_t *lock = (pthread_spinlock_t *) arg; | |
/* When do_test holds the lock for 1 sec, the two thread will be | |
in contention for the lock. */ | |
if (pthread_spin_lock (lock) != 0) | |
{ | |
puts ("thread_add_one(): spin_lock failed"); | |
pthread_exit ((void *) 1l); | |
} | |
/* sleep 1s before modifying count */ | |
tmp = count; | |
sleep (1); | |
count = tmp + 1; | |
if (pthread_spin_unlock (lock) != 0) | |
{ | |
puts ("thread_add_one(): spin_unlock failed"); | |
pthread_exit ((void *) 1l); | |
} | |
return NULL; | |
} | |
static int | |
do_test (void) | |
{ | |
pthread_t thr1, thr2; | |
pthread_spinlock_t lock; | |
int tmp; | |
if (pthread_spin_init (&lock, PTHREAD_PROCESS_PRIVATE) != 0) | |
{ | |
puts ("spin_init failed"); | |
return 1; | |
} | |
if (pthread_spin_lock (&lock) != 0) | |
{ | |
puts ("1st spin_lock failed"); | |
return 1; | |
} | |
if (pthread_create (&thr1, NULL, thread_add_one, (void *) &lock) != 0) | |
{ | |
puts ("1st pthread_create failed"); | |
return 1; | |
} | |
if (pthread_create (&thr2, NULL, thread_add_one, (void *) &lock) != 0) | |
{ | |
puts ("2nd pthread_create failed"); | |
return 1; | |
} | |
/* sleep 1s before modifying count */ | |
tmp = count; | |
sleep (1); | |
count = tmp + 1; | |
if (pthread_spin_unlock (&lock) != 0) | |
{ | |
puts ("1st spin_unlock failed"); | |
return 1; | |
} | |
void *status; | |
if (pthread_join (thr1, &status) != 0) | |
{ | |
puts ("1st pthread_join failed"); | |
return 1; | |
} | |
if (status != NULL) | |
{ | |
puts ("failure in the 1st thread"); | |
return 1; | |
} | |
if (pthread_join (thr2, &status) != 0) | |
{ | |
puts ("2nd pthread_join failed"); | |
return 1; | |
} | |
if (status != NULL) | |
{ | |
puts ("failure in the 2nd thread"); | |
return 1; | |
} | |
if (count != 3) | |
{ | |
printf ("count is %d, should be 3\n", count); | |
return 1; | |
} | |
return 0; | |
} | |
#define TIMEOUT 5 | |
#define TEST_FUNCTION do_test () | |
#include "../test-skeleton.c" |