SVSemaphore Class Reference

#include <svutil.h>

Public Member Functions
	SVSemaphore ()
	Sets up a semaphore. More...
	~SVSemaphore ()
	Cleans up the mutex. More...
void	Signal ()
	Signal a semaphore. More...
void	Wait ()
	Wait on a semaphore. More...

Detailed Description

A semaphore class which encapsulates the main signaling and wait abilities of semaphores for windows and unix.

Definition at line 48 of file svutil.h.

Constructor & Destructor Documentation

SVSemaphore()

SVSemaphore::SVSemaphore

(

)

Sets up a semaphore.

Definition at line 174 of file svutil.cpp.

                         {
#ifdef _WIN32
  semaphore_ = CreateSemaphore(0, 0, 10, 0);
#elif defined(__APPLE__)
  char name[50];
  snprintf(name, sizeof(name), "%ld", random());
  sem_unlink(name);
  semaphore_ = sem_open(name, O_CREAT , S_IWUSR, 0);
  if (semaphore_ == SEM_FAILED) {
    perror("sem_open");
  }
#else
  sem_init(&semaphore_, 0, 0);
#endif
}

~SVSemaphore()

SVSemaphore::~SVSemaphore

(

)

Cleans up the mutex.

Definition at line 190 of file svutil.cpp.

                          {
#ifdef _WIN32
  CloseHandle(semaphore_);
#elif defined(__APPLE__)
  sem_close(semaphore_);
#else
  sem_close(&semaphore_);
#endif
}

Member Function Documentation

Signal()

void SVSemaphore::Signal

(

)

Signal a semaphore.

Definition at line 200 of file svutil.cpp.

                         {
#ifdef _WIN32
  ReleaseSemaphore(semaphore_, 1, nullptr);
#elif defined(__APPLE__)
  sem_post(semaphore_);
#else
  sem_post(&semaphore_);
#endif
}

Wait()

void SVSemaphore::Wait

(

)

Wait on a semaphore.

Definition at line 210 of file svutil.cpp.

                       {
#ifdef _WIN32
  WaitForSingleObject(semaphore_, INFINITE);
#elif defined(__APPLE__)
  sem_wait(semaphore_);
#else
  sem_wait(&semaphore_);
#endif
}

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The documentation for this class was generated from the following files:

• src/viewer/svutil.h
• src/viewer/svutil.cpp