guicast/mutex.C

   1 #include "bcsignals.h"
   2 #include "mutex.h"
   3
   4 Mutex::Mutex(char *title)
   5 {
   6         this->title = title;
   7         pthread_mutexattr_t attr;
   8         pthread_mutexattr_init(&attr);
   9 //      pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_ADAPTIVE_NP);
  10         pthread_mutex_init(&mutex, &attr);
  11 }
  12
  13 Mutex::~Mutex()
  14 {
  15         pthread_mutex_destroy(&mutex);
  16         UNSET_ALL_LOCKS(this);
  17 }
  18
  19 int Mutex::lock(char *location)
  20 {
  21         SET_LOCK(this, title, location);
  22         if(pthread_mutex_lock(&mutex)) perror("Mutex::lock");
  23         SET_LOCK2
  24         return 0;
  25 }
  26
  27 int Mutex::unlock()
  28 {
  29         UNSET_LOCK(this);
  30         if(pthread_mutex_unlock(&mutex)) perror("Mutex::unlock");
  31         return 0;
  32 }
  33
  34 int Mutex::trylock()
  35 {
  36         return pthread_mutex_trylock(&mutex);
  37 }
  38
  39 int Mutex::reset()
  40 {
  41         pthread_mutex_destroy(&mutex);
  42         pthread_mutexattr_t attr;
  43         pthread_mutexattr_init(&attr);
  44         pthread_mutex_init(&mutex, &attr);
  45         UNSET_ALL_LOCKS(this)
  46         return 0;
  47 }