mutex_w32.cpp

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/*****************************************************************************
** Platform Check
*****************************************************************************/
 
#include <ecl/config/ecl.hpp>
#if defined(ECL_IS_WIN32)
 
/*****************************************************************************
** Includes
*****************************************************************************/
 
#include <ecl/exceptions/standard_exception.hpp>
#include "../../include/ecl/threads/mutex_w32.hpp"
 
/*****************************************************************************
** Namespaces
*****************************************************************************/
 
namespace ecl {
 
/*****************************************************************************
* Mutex Class Methods
*****************************************************************************/
 
Mutex::Mutex(const bool locked) : number_locks(0)  {
        InitializeCriticalSection(&mutex); // has no return value
        if ( locked ) {
                this->lock();
        }
}
 
Mutex::~Mutex() {
        DeleteCriticalSection(&mutex); // has no return value
}
 
void Mutex::lock() {
        InterlockedIncrement((long*)&number_locks);
    EnterCriticalSection(&mutex); // has no return value
}
 
bool Mutex::trylock(Duration &duration) {
        return trylock();
}
 
bool Mutex::trylock() {
        if (number_locks > 0)
                return false;
        lock();
        return true;
}
 
void Mutex::unlock()
{
    LeaveCriticalSection( &mutex );
    InterlockedDecrement((long*)&number_locks);
}
 
} // namespace ecl
 
#endif /* ECL_IS_WIN32 */