mutextrylock.c

/*
 *                               POK header
 * 
 * The following file is a part of the POK project. Any modification should
 * made according to the POK licence. You CANNOT use this file or a part of
 * this file is this part of a file for your own project
 *
 * For more information on the POK licence, please see our LICENCE FILE
 *
 * Please follow the coding guidelines described in doc/CODING_GUIDELINES
 *
 *                                      Copyright (c) 2007-2009 POK team 
 *
 * Created by julien on Thu Jan 15 23:34:13 2009 
 */


#ifdef POK_NEEDS_MUTEXES
#include <types.h>
#include <errno.h>
#include <core/time.h>
#include <core/lockobj.h>
#include <core/mutex.h>
#include <core/syscall.h>

pok_ret_t pok_mutex_trylock (const pok_mutex_id_t id, const uint64_t time)
{
   pok_lockobj_lockattr_t lockattr;
   lockattr.operation   = LOCKOBJ_OPERATION_LOCK;

   if (time > 0)
   {
      pok_time_get (&lockattr.time);
      lockattr.time        += time;
   }

   lockattr.obj_kind    = POK_LOCKOBJ_KIND_MUTEX;
   return (pok_syscall2 (POK_SYSCALL_LOCKOBJ_OPERATION, (uint32_t)id, (uint32_t)&lockattr));
}

#endif