guicast/condition.h

   1 #ifndef CONDITION_H
   2 #define CONDITION_H
   3
   4 #include <pthread.h>
   5
   6 class Condition
   7 {
   8 public:
   9         Condition(int init_value = 0, char *title = 0);
  10         ~Condition();
  11
  12 // Reset to init_value whether locked or not.
  13         void reset();
  14 // Block if value <= 0, then decrease value
  15         void lock(char *location = 0);
  16 // Increase value
  17         void unlock();
  18 // Block for requested duration if value <= 0.
  19 // value is decreased whether or not the condition is unlocked in time
  20         int timed_lock(int microseconds, char *location = 0);
  21         int get_value();
  22
  23     pthread_cond_t cond;
  24     pthread_mutex_t mutex;
  25     int value;
  26         int init_value;
  27         char *title;
  28 };
  29
  30
  31 #endif