thread_mutex.c

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/* mutex handling routines */

#include "../fb.h"
#include "../fb_private_thread.h"

FBCALL FBMUTEX *fb_MutexCreate( void )
{
        FBMUTEX *mutex = (FBMUTEX *)malloc( sizeof( FBMUTEX ) );
        if( !mutex )
                return NULL;

        mutex->id = CreateSemaphore( NULL, 1, 1, NULL );

        return mutex;
}

FBCALL void fb_MutexDestroy( FBMUTEX *mutex )
{
        if( mutex ) {
                CloseHandle( mutex->id );
                free( (void *)mutex );
        }
}

FBCALL void fb_MutexLock( FBMUTEX *mutex )
{
        if( mutex ) {
                WaitForSingleObject( mutex->id, INFINITE );
        }
}

FBCALL void fb_MutexUnlock( FBMUTEX *mutex )
{
        if( mutex ) {
                ReleaseSemaphore( mutex->id, 1, NULL );
        }
}