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Viewing changes to Development/languages/C/Samples/pthreads/pthreads.c

  • Committer: Suren A. Chilingaryan
  • Date: 2009-04-09 03:21:08 UTC
  • Revision ID: csa@dside.dyndns.org-20090409032108-w4edamdh4adrgdu3
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Development/languages/C/Samples/pthreads/pthreads.c
 
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#include <stdio.h>
 
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#include <pthread.h>
 
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int n=0;
 
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pthread_mutex_t n_mutex = PTHREAD_MUTEX_INITIALIZER;
 
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pthread_cond_t n_cond = PTHREAD_COND_INITIALIZER;
 
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pthread_mutex_t n_cond_mutex = PTHREAD_MUTEX_INITIALIZER;
 
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void *reader(void *args) {
 
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        while (1) {
 
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                pthread_mutex_lock(&n_mutex);
 
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                n=n+1;
 
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                pthread_mutex_unlock(&n_mutex);
 
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                pthread_cond_broadcast(&n_cond);
 
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        }
 
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}
 
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void main() {
 
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        pthread_t trd;
 
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        pthread_mutex_lock(&n_cond_mutex);
 
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        if (pthread_create(&trd,NULL,reader,NULL)) {
 
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                printf("Error\n");
 
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                exit(0);
 
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        } 
 
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        while (1) {
 
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                pthread_cond_wait(&n_cond,&n_cond_mutex);
 
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                pthread_mutex_lock(&n_mutex);
 
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                printf("%u ",n);
 
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                pthread_mutex_unlock(&n_mutex);
 
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        }
 
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}