mutex.cpp

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#include "mutex.hpp"
 
HANDLE g_mutex;
 
ERRORCODE SetEnvironmentMutex() {
    g_mutex = CreateMutexA(
        NULL,
        FALSE,
        SERVICE_MUTEX
    );
    if (g_mutex == NULL)
    {
        return INVALID_INPUT;
    }
 
    return PANO_SUCCESS;
}
 
ERRORCODE MutexExist() {
    g_mutex = OpenMutexA(
        SYNCHRONIZE,  // Request full access
        FALSE,        // Do not inherit handle
        SERVICE_MUTEX     // Name of the mutex
    );
    if (g_mutex == NULL)
    {
        return MUTEX_NOT_SET;
    }
 
    return PANO_SUCCESS;
}
 
ERRORCODE DestroyMutex() {
    if (!ReleaseMutex(g_mutex))
        return CLEAN_HANDLE;
 
    return PANO_SUCCESS;
}