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90 lines
2.7 KiB
90 lines
2.7 KiB
5 months ago
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/*
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Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License, version 2.0,
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as published by the Free Software Foundation.
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This program is also distributed with certain software (including
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but not limited to OpenSSL) that is licensed under separate terms,
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as designated in a particular file or component or in included license
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documentation. The authors of MySQL hereby grant you an additional
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permission to link the program and your derivative works with the
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separately licensed software that they have included with MySQL.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License, version 2.0, for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
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#ifndef MY_MACROS_INCLUDED
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#define MY_MACROS_INCLUDED
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/**
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@file include/my_macros.h
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Some common macros. Note that some of these should probably be replaced
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with code from \<algorithm\> or similar.
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*/
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#ifndef MYSQL_ABI_CHECK
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#include <stddef.h>
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#endif
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/* Macros to make switching between C and C++ mode easier */
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#ifdef __cplusplus
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#define C_MODE_START extern "C" {
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#define C_MODE_END }
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#else
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#define C_MODE_START
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#define C_MODE_END
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#endif
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/* Make it easier to add conditional code in _expressions_ */
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#ifdef _WIN32
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#define IF_WIN(A, B) A
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#else
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#define IF_WIN(A, B) B
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#endif
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/*
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Two levels of macros are needed to stringify the
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result of expansion of a macro argument.
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*/
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#define QUOTE_ARG(x) #x /* Quote argument (before cpp) */
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#define STRINGIFY_ARG(x) QUOTE_ARG(x) /* Quote argument, after cpp */
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#define MY_TEST(a) ((a) ? 1 : 0)
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#define MY_MAX(a, b) ((a) > (b) ? (a) : (b))
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#define MY_MIN(a, b) ((a) < (b) ? (a) : (b))
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#define set_if_bigger(a, b) \
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do { \
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if ((a) < (b)) (a) = (b); \
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} while (0)
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#define set_if_smaller(a, b) \
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do { \
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if ((a) > (b)) (a) = (b); \
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} while (0)
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#define test_all_bits(a, b) (((a) & (b)) == (b))
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/* Bug in developerstudio: use the C version */
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#if defined(__cplusplus) && !defined(__SUNPRO_CC)
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template <class T, size_t N>
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constexpr size_t array_elements(T (&)[N]) noexcept {
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return N;
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}
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#else
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// Less type-safe version that e.g. allows sending in pointers
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// or STL containers without an error.
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#define array_elements(A) ((size_t)(sizeof(A) / sizeof(A[0])))
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#endif
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#endif // MY_MACROS_INCLUDED
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