/contrib/bind9/lib/isc/refcount.c

https://bitbucket.org/freebsd/freebsd-head/ · C · 37 lines · 15 code · 6 blank · 16 comment · 2 complexity · cc924479fff0aacb9fdd61d4b859c491 MD5 · raw file

  1. /*
  2. * Copyright (C) 2005, 2007 Internet Systems Consortium, Inc. ("ISC")
  3. *
  4. * Permission to use, copy, modify, and/or distribute this software for any
  5. * purpose with or without fee is hereby granted, provided that the above
  6. * copyright notice and this permission notice appear in all copies.
  7. *
  8. * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
  9. * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
  10. * AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
  11. * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
  12. * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
  13. * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
  14. * PERFORMANCE OF THIS SOFTWARE.
  15. */
  16. /* $Id: refcount.c,v 1.5 2007/06/19 23:47:17 tbox Exp $ */
  17. #include <config.h>
  18. #include <stddef.h>
  19. #include <isc/mutex.h>
  20. #include <isc/refcount.h>
  21. #include <isc/result.h>
  22. isc_result_t
  23. isc_refcount_init(isc_refcount_t *ref, unsigned int n) {
  24. REQUIRE(ref != NULL);
  25. ref->refs = n;
  26. #if defined(ISC_PLATFORM_USETHREADS) && !defined(ISC_PLATFORM_HAVEXADD)
  27. return (isc_mutex_init(&ref->lock));
  28. #else
  29. return (ISC_R_SUCCESS);
  30. #endif
  31. }