28 #include "memory/allocation.hpp"
  29 
  30 #include <semaphore.h>
  31 
  32 class PosixSemaphore : public CHeapObj<mtInternal> {
  33   sem_t _semaphore;
  34 
  35   // Prevent copying and assignment.
  36   PosixSemaphore(const PosixSemaphore&);
  37   PosixSemaphore& operator=(const PosixSemaphore&);
  38 
  39  public:
  40   PosixSemaphore(uint value = 0);
  41   ~PosixSemaphore();
  42 
  43   void signal(uint count = 1);
  44 
  45   void wait();
  46 
  47   bool trywait();
  48   bool timedwait(unsigned int sec, int nsec) {
  49     return timedwait(create_timespec(sec, nsec));
  50   }
  51 
  52  private:
  53   bool timedwait(struct timespec ts);
  54 
  55   // OS specific implementation to create a timespec suitable for semaphores.
  56   struct timespec create_timespec(unsigned int set, int nsec);
  57 };
  58 
  59 typedef PosixSemaphore SemaphoreImpl;
  60 
  61 #endif // OS_POSIX_VM_SEMAPHORE_POSIX_HPP

  28 #include "memory/allocation.hpp"
  29 
  30 #include <semaphore.h>
  31 
  32 class PosixSemaphore : public CHeapObj<mtInternal> {
  33   sem_t _semaphore;
  34 
  35   // Prevent copying and assignment.
  36   PosixSemaphore(const PosixSemaphore&);
  37   PosixSemaphore& operator=(const PosixSemaphore&);
  38 
  39  public:
  40   PosixSemaphore(uint value = 0);
  41   ~PosixSemaphore();
  42 
  43   void signal(uint count = 1);
  44 
  45   void wait();
  46 
  47   bool trywait();





  48   bool timedwait(struct timespec ts);



  49 };
  50 
  51 typedef PosixSemaphore SemaphoreImpl;
  52 
  53 #endif // OS_POSIX_VM_SEMAPHORE_POSIX_HPP