Thread Synchronization

• Mutex - “Mutual Exclusion”

• Attributes

  • int pthread_mutexattr_init(pthreads_mutexattr_t * attr);
  • int pthread_mutexattr_destroy( pthreads_mutexattr_t * attr);
  • int pthread_mutexattr_getpshared(pthreads_mutexattr_t *attr, int *pshared);
  • int pthread_mutexattr_setpshared(pthreads_mutexattr_t *attr, int pshared);
  • PTHREAD_PROCESS_PRIVATE, PTHREAD_PROCESS_SHARED;

• Initialization and Destruction

  • Static Init: pthread_mutex_t foo = PTHREAD_MUTEX_INITIALIZER;
    • Mutex is constructed with system default attributes.
  • Dynamic Init:
    • int pthread_mutex_init(pthread_mutex_t *mtx, pthread_mutexattr_t *attr);
    • Constructed with attributes in attr
  • Destruction: int pthread_mutex_destroy(pthread_mutex *mutex);

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