write_in_reader_lock.cc [plain text]
#include <pthread.h>
#include <unistd.h>
pthread_rwlock_t rwlock;
int GLOB;
void *Thread1(void *p) {
(void)p;
pthread_rwlock_rdlock(&rwlock);
sleep(1);
GLOB++;
pthread_rwlock_unlock(&rwlock);
return 0;
}
int main(int argc, char *argv[]) {
pthread_rwlock_init(&rwlock, NULL);
pthread_rwlock_rdlock(&rwlock);
pthread_t t;
pthread_create(&t, 0, Thread1, 0);
volatile int x = GLOB;
(void)x;
pthread_rwlock_unlock(&rwlock);
pthread_join(t, 0);
pthread_rwlock_destroy(&rwlock);
return 0;
}