tesseract: SVSemaphore Class Reference

#include <svutil.h>

Public Member Functions
	SVSemaphore ()
	Sets up a semaphore. More...

void	Signal ()
	Signal a semaphore. More...

void	Wait ()
	Wait on a semaphore. More...

Detailed Description

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

Definition at line 70 of file svutil.h.

Constructor & Destructor Documentation

◆ SVSemaphore()

SVSemaphore::SVSemaphore ( )

Sets up a semaphore.

Definition at line 153 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
 }

Member Function Documentation

◆ Signal()

void SVSemaphore::Signal ( )

Signal a semaphore.

Definition at line 169 of file svutil.cpp.

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

◆ Wait()

void SVSemaphore::Wait ( )

Wait on a semaphore.

Definition at line 179 of file svutil.cpp.

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

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