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- /*
- * Copyright (C) 2004, 2005 Internet Systems Consortium, Inc. ("ISC")
- * Copyright (C) 1999-2001 Internet Software Consortium.
- *
- * Permission to use, copy, modify, and distribute this software for any
- * purpose with or without fee is hereby granted, provided that the above
- * copyright notice and this permission notice appear in all copies.
- *
- * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
- * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
- * AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
- * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
- * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
- * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
- * PERFORMANCE OF THIS SOFTWARE.
- */
-
- /* $Id: once.h,v 1.9.18.2 2005/04/29 00:17:06 marka Exp $ */
-
- #ifndef ISC_ONCE_H
- #define ISC_ONCE_H 1
-
- /*! \file */
-
- #include <pthread.h>
-
- #include <isc/platform.h>
- #include <isc/result.h>
-
- typedef pthread_once_t isc_once_t;
-
- #ifdef ISC_PLATFORM_BRACEPTHREADONCEINIT
- /*!
- * This accomodates systems that define PTHRAD_ONCE_INIT improperly.
- */
- #define ISC_ONCE_INIT { PTHREAD_ONCE_INIT }
- #else
- /*!
- * This is the usual case.
- */
- #define ISC_ONCE_INIT PTHREAD_ONCE_INIT
- #endif
-
- /* XXX We could do fancier error handling... */
-
- #define isc_once_do(op, f) \
- ((pthread_once((op), (f)) == 0) ? \
- ISC_R_SUCCESS : ISC_R_UNEXPECTED)
-
- #endif /* ISC_ONCE_H */
-