windows/SysSemaphore.cpp

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/*****************************************************************************/
/* REXX Windows Support                                                      */
/*                                                                           */
/* Semaphore support for Windows                                             */
/*                                                                           */
/*****************************************************************************/
 
#include "SysSemaphore.hpp"
 
bool SysSemaphore::usingTls = false;
DWORD SysSemaphore::tlsNoMessageLoopIndex = TLS_OUT_OF_INDEXES;
 
/**
 * Create a semaphore with potential creation-time
 * initialization.
 *
 * @param create Indicates whether the semaphore should be created now.
 */
SysSemaphore::SysSemaphore(const char *variable, bool createSem)
{
    semVariable = variable;
    sem = 0;
    if (createSem)
    {
        create();
    }
}
 
 
/* ********************************************************************** */
/* ***                  SysSemaphore                                  *** */
/* ********************************************************************** */
void SysSemaphore::create()
{
   if (sem == 0 )
   {
       sem = CreateEvent(NULL, true, true, NULL);
   }
}
 
void SysSemaphore::close()
{
    if (sem != 0)
    {
        CloseHandle(sem);
        sem = 0;
    }
}
 
 
/* ********************************************************************** */
/* ***                  SysMutex                                     *** */
/* ********************************************************************** */
 
/**
 * Create a semaphore with potential creation-time
 * initialization.
 *
 * @param create Indicates whether the semaphore should be created now.
 */
SysMutex::SysMutex(const char *variable, bool createSem)
{
    mutexVariable = variable;
    mutexMutex = 0;
    if (createSem)
    {
        create();
    }
}
 
 
void SysMutex::create()
{
    if (mutexMutex == 0)
    {
        mutexMutex = CreateMutex(NULL, false, NULL);
    }
}
 
void SysMutex::close()
{
    if (mutexMutex != 0)
    {
        CloseHandle(mutexMutex);
        mutexMutex = 0;
    }
}