guicast/mutex.h

   1 #ifndef MUTEX_H
   2 #define MUTEX_H
   3
   4 #include <pthread.h>
   5 #include <stdio.h>
   6
   7 class Mutex
   8 {
   9 public:
  10         Mutex(char *title = 0, int recursive = 0);
  11         ~Mutex();
  12
  13         int lock(char *location = 0);
  14         int unlock();
  15 // Calls pthread_mutex_trylock, whose effect depends on library version.
  16         int trylock();
  17         int reset();
  18 // Returns 1 if count is > 0
  19         int is_locked();
  20
  21 // Number of times the thread currently holding the mutex has locked it.
  22 // For recursive locking.
  23         int count;
  24 // ID of the thread currently holding the mutex.  For recursive locking.
  25         pthread_t thread_id;
  26         int thread_id_valid;
  27         int recursive;
  28 // Lock the variables for recursive locking.
  29         pthread_mutex_t recursive_lock;
  30         pthread_mutex_t mutex;
  31         char *title;
  32 };
  33
  34
  35 #endif