recmutex.c

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/*
  recmutex.c  -  recursive mutex

   Copyright (C)
     2008, 2009,      Christian Thaeter <ct@pipapo.org>

  **Lumiera** is free software; you can redistribute it and/or modify it
  under the terms of the GNU General Public License as published by the
  Free Software Foundation; either version 2 of the License, or (at your
  option) any later version. See the file COPYING for further details.
*/

#include "lib/recmutex.h"

static pthread_once_t recmutexattr_once = PTHREAD_ONCE_INIT;
static pthread_mutexattr_t recmutexattr;

static void recmutexattr_init()
{
  pthread_mutexattr_init (&recmutexattr);
  pthread_mutexattr_settype (&recmutexattr, PTHREAD_MUTEX_RECURSIVE);
}


LumieraRecmutex
lumiera_recmutex_init (LumieraRecmutex self,
                       const char* purpose,
                       struct nobug_flag* flag,
                       const struct nobug_context ctx)
{
  if (self)
    {
      pthread_once (&recmutexattr_once, recmutexattr_init);

      NOBUG_RESOURCE_HANDLE_INIT (self->rh);
      NOBUG_RESOURCE_ANNOUNCE_RAW_CTX (flag, "recmutex", purpose, self, self->rh, ctx)
        {
          pthread_mutex_init (&self->recmutex, &recmutexattr);
        }
    }

  return self;
}


LumieraRecmutex
lumiera_recmutex_destroy (LumieraRecmutex self,
                          struct nobug_flag* flag,
                          const struct nobug_context ctx)
{
  if (self)
    {
      NOBUG_RESOURCE_FORGET_RAW_CTX (flag,  self->rh, ctx)
        {
          if (pthread_mutex_destroy (&self->recmutex))
            LUMIERA_DIE (LOCK_DESTROY);
        }
    }
  return self;
}

/*
// Local Variables:
// mode: C
// c-file-style: "gnu"
// indent-tabs-mode: nil
// End:
*/