tesseract 4.1.1
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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 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 166 of file svutil.cpp.

166 {
167#ifdef _WIN32
168 semaphore_ = CreateSemaphore(0, 0, 10, 0);
169#elif defined(__APPLE__)
170 char name[50];
171 snprintf(name, sizeof(name), "%ld", random());
172 sem_unlink(name);
173 semaphore_ = sem_open(name, O_CREAT , S_IWUSR, 0);
174 if (semaphore_ == SEM_FAILED) {
175 perror("sem_open");
176 }
177#else
178 sem_init(&semaphore_, 0, 0);
179#endif
180}

Member Function Documentation

◆ Signal()

void SVSemaphore::Signal ( )

Signal a semaphore.

Definition at line 182 of file svutil.cpp.

182 {
183#ifdef _WIN32
184 ReleaseSemaphore(semaphore_, 1, nullptr);
185#elif defined(__APPLE__)
186 sem_post(semaphore_);
187#else
188 sem_post(&semaphore_);
189#endif
190}

◆ Wait()

void SVSemaphore::Wait ( )

Wait on a semaphore.

Definition at line 192 of file svutil.cpp.

192 {
193#ifdef _WIN32
194 WaitForSingleObject(semaphore_, INFINITE);
195#elif defined(__APPLE__)
196 sem_wait(semaphore_);
197#else
198 sem_wait(&semaphore_);
199#endif
200}

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