Viewing file: once.h (1.47 KB) -rw-r--r-- Select action/file-type: (+) | (+) | (+) | Code (+) | Session (+) | (+) | SDB (+) | (+) | (+) | (+) | (+) | (+) |
/* * Copyright (C) 2004, 2005, 2007 Internet Systems Consortium, Inc. ("ISC") * Copyright (C) 1999-2001 Internet Software Consortium. * * Permission to use, copy, modify, and/or 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 1.13 2007-06-19 23:47:18 tbox 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 */
|