97 lines
2.1 KiB
C++
97 lines
2.1 KiB
C++
#include "cSemaphore.h"
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#include "cMCLogger.h"
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#ifdef _WIN32
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#include <Windows.h>
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#else
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#include <semaphore.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <stdio.h>
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#endif
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cSemaphore::cSemaphore( unsigned int a_MaxCount, unsigned int a_InitialCount /* = 0 */ )
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#ifndef _WIN32
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: m_bNamed( false )
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#endif
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{
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#ifndef _WIN32
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(void)a_MaxCount;
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m_Handle = new sem_t;
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if( sem_init( (sem_t*)m_Handle, 0, 0 ) )
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{
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LOG("WARNING cSemaphore: Could not create unnamed semaphore, fallback to named.");
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delete (sem_t*)m_Handle; // named semaphores return their own address
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m_bNamed = true;
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char c_Str[32];
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sprintf( c_Str, "cSemaphore%p", this );
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m_Handle = sem_open( c_Str, O_CREAT, 777, a_InitialCount );
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if( m_Handle == SEM_FAILED )
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{
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LOG("ERROR: Could not create Semaphore. (%i)", errno );
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}
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else
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{
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if( sem_unlink( c_Str ) != 0 )
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{
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LOG("ERROR: Could not unlink cSemaphore. (%i)", errno);
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}
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}
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}
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#else
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m_Handle = CreateSemaphore(
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NULL, // security attribute
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a_InitialCount, // initial count
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a_MaxCount, // maximum count
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0 // name (optional)
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);
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#endif
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}
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cSemaphore::~cSemaphore()
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{
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#ifdef _WIN32
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CloseHandle( m_Handle );
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#else
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if( m_bNamed )
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{
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if( sem_close( (sem_t*)m_Handle ) != 0 )
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{
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LOG("ERROR: Could not close cSemaphore. (%i)", errno);
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}
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}
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else
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{
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sem_destroy( (sem_t*)m_Handle );
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delete (sem_t*)m_Handle;
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}
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m_Handle = 0;
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#endif
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}
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void cSemaphore::Wait()
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{
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#ifndef _WIN32
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if( sem_wait( (sem_t*)m_Handle ) != 0)
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{
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LOG("ERROR: Could not wait for cSemaphore. (%i)", errno);
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}
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#else
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WaitForSingleObject( m_Handle, INFINITE);
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#endif
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}
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void cSemaphore::Signal()
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{
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#ifndef _WIN32
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if( sem_post( (sem_t*)m_Handle ) != 0 )
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{
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LOG("ERROR: Could not signal cSemaphore. (%i)", errno);
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}
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#else
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ReleaseSemaphore( m_Handle, 1, NULL );
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#endif
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}
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