Ben Pfaff
120 lines
3.9 KiB
C
120 lines
3.9 KiB
C
/* Copyright (c) 2008 The Board of Trustees of The Leland Stanford
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* Junior University
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*
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* We are making the OpenFlow specification and associated documentation
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* (Software) available for public use and benefit with the expectation
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* that others will use, modify and enhance the Software and contribute
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* those enhancements back to the community. However, since we would
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* like to make the Software available for broadest use, with as few
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* restrictions as possible permission is hereby granted, free of
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* charge, to any person obtaining a copy of this Software to deal in
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* the Software under the copyrights without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*
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* The name and trademarks of copyright holder(s) may NOT be used in
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* advertising or publicity pertaining to the Software or any
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* derivatives without specific, written prior permission.
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*/
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#ifndef UTIL_H
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#define UTIL_H 1
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#include <stdarg.h>
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#include <stdbool.h>
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#include <stddef.h>
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#include <stdint.h>
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#include <stdio.h>
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#include <string.h>
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#include "compiler.h"
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#ifndef va_copy
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#ifdef __va_copy
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#define va_copy __va_copy
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#else
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#define va_copy(dst, src) ((dst) = (src))
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#endif
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#endif
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#ifndef __cplusplus
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/* Build-time assertion for use in a statement context. */
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#define BUILD_ASSERT(EXPR) \
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sizeof(struct { unsigned int build_assert_failed : (EXPR) ? 1 : -1; })
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/* Build-time assertion for use in a declaration context. */
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#define BUILD_ASSERT_DECL(EXPR) \
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extern int (*build_assert(void))[BUILD_ASSERT(EXPR)]
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#else /* __cplusplus */
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#include <boost/static_assert.hpp>
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#define BUILD_ASSERT BOOST_STATIC_ASSERT
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#define BUILD_ASSERT_DECL BOOST_STATIC_ASSERT
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#endif /* __cplusplus */
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extern const char *program_name;
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#define ARRAY_SIZE(ARRAY) (sizeof ARRAY / sizeof *ARRAY)
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#define ROUND_UP(X, Y) (((X) + ((Y) - 1)) / (Y) * (Y))
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#define ROUND_DOWN(X, Y) ((X) / (Y) * (Y))
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#ifndef MIN
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#define MIN(X, Y) ((X) < (Y) ? (X) : (Y))
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#endif
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#ifndef MAX
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#define MAX(X, Y) ((X) > (Y) ? (X) : (Y))
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#endif
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#define NOT_REACHED() abort()
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#define NOT_IMPLEMENTED() abort()
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#define NOT_TESTED() ((void) 0) /* XXX should print a message. */
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/* Given POINTER, the address of the given MEMBER in a STRUCT object, returns
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the STRUCT object. */
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#define CONTAINER_OF(POINTER, STRUCT, MEMBER) \
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((STRUCT *) ((char *) (POINTER) - offsetof (STRUCT, MEMBER)))
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#ifdef __cplusplus
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extern "C" {
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#endif
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void set_program_name(const char *);
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void out_of_memory(void);
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void *xmalloc(size_t);
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void *xcalloc(size_t, size_t);
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void *xrealloc(void *, size_t);
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void *xmemdup(const void *, size_t);
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char *xmemdup0(const char *, size_t);
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char *xstrdup(const char *);
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char *xasprintf(const char *format, ...) PRINTF_FORMAT(1, 2);
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char *xvasprintf(const char *format, va_list) PRINTF_FORMAT(1, 0);
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#ifndef HAVE_STRLCPY
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void strlcpy(char *dst, const char *src, size_t size);
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#endif
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void ofp_fatal(int err_no, const char *format, ...)
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PRINTF_FORMAT(2, 3) NO_RETURN;
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void ofp_error(int err_no, const char *format, ...) PRINTF_FORMAT(2, 3);
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void ofp_hex_dump(FILE *, const void *, size_t, uintptr_t offset, bool ascii);
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#ifdef __cplusplus
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}
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#endif
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#endif /* util.h */
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