243 lines
10 KiB
C
243 lines
10 KiB
C
/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
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#pragma once
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/***
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This file is part of systemd.
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Copyright 2010 Lennart Poettering
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systemd is free software; you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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systemd is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with systemd; If not, see <http://www.gnu.org/licenses/>.
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***/
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#include <assert.h>
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#include <sys/param.h>
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#include <sys/types.h>
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#include <sys/uio.h>
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#include <inttypes.h>
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#define _printf_attr_(a,b) __attribute__ ((format (printf, a, b)))
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#define _sentinel_ __attribute__ ((sentinel))
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#define _noreturn_ __attribute__((noreturn))
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#define _unused_ __attribute__ ((unused))
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#define _destructor_ __attribute__ ((destructor))
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#define _pure_ __attribute__ ((pure))
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#define _const_ __attribute__ ((const))
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#define _deprecated_ __attribute__ ((deprecated))
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#define _packed_ __attribute__ ((packed))
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#define _malloc_ __attribute__ ((malloc))
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#define _weak_ __attribute__ ((weak))
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#define _likely_(x) (__builtin_expect(!!(x),1))
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#define _unlikely_(x) (__builtin_expect(!!(x),0))
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#define _public_ __attribute__ ((visibility("default")))
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#define _hidden_ __attribute__ ((visibility("hidden")))
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#define _weakref_(x) __attribute__((weakref(#x)))
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#define _introspect_(x) __attribute__((section("introspect." x)))
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#define _alignas_(x) __attribute__((aligned(__alignof(x))))
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#define XSTRINGIFY(x) #x
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#define STRINGIFY(x) XSTRINGIFY(x)
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/* Rounds up */
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#define ALIGN(l) ALIGN_TO((l), sizeof(void*))
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static inline size_t ALIGN_TO(size_t l, size_t ali) {
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return ((l + ali - 1) & ~(ali - 1));
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}
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#define ELEMENTSOF(x) (sizeof(x)/sizeof((x)[0]))
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/*
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* container_of - cast a member of a structure out to the containing structure
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* @ptr: the pointer to the member.
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* @type: the type of the container struct this is embedded in.
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* @member: the name of the member within the struct.
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*
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*/
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#define container_of(ptr, type, member) ({ \
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const typeof( ((type *)0)->member ) *__mptr = (ptr); \
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(type *)( (char *)__mptr - offsetof(type,member) );})
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#ifndef MAX
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#define MAX(a,b) \
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__extension__ ({ \
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typeof(a) _a = (a); \
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typeof(b) _b = (b); \
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_a > _b ? _a : _b; \
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})
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#endif
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#define MAX3(a,b,c) \
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MAX(MAX(a,b),c)
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#ifndef MIN
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#define MIN(a,b) \
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__extension__ ({ \
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typeof(a) _a = (a); \
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typeof(b) _b = (b); \
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_a < _b ? _a : _b; \
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})
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#endif
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#define MIN3(a,b,c) \
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MIN(MIN(a,b),c)
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#define CLAMP(x, low, high) \
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__extension__ ({ \
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typeof(x) _x = (x); \
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typeof(low) _low = (low); \
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typeof(high) _high = (high); \
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((_x > _high) ? _high : ((_x < _low) ? _low : _x)); \
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})
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#define assert_se(expr) \
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do { \
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if (_unlikely_(!(expr))) \
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log_assert_failed(#expr, __FILE__, __LINE__, __PRETTY_FUNCTION__); \
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} while (false) \
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/* We override the glibc assert() here. */
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#undef assert
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#ifdef NDEBUG
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#define assert(expr) do {} while(false)
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#else
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#define assert(expr) assert_se(expr)
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#endif
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#define assert_not_reached(t) \
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do { \
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log_assert_failed_unreachable(t, __FILE__, __LINE__, __PRETTY_FUNCTION__); \
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} while (false)
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#define assert_cc(expr) \
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do { \
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switch (0) { \
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case 0: \
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case !!(expr): \
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; \
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} \
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} while (false)
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#define PTR_TO_UINT(p) ((unsigned int) ((uintptr_t) (p)))
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#define UINT_TO_PTR(u) ((void*) ((uintptr_t) (u)))
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#define PTR_TO_UINT32(p) ((uint32_t) ((uintptr_t) (p)))
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#define UINT32_TO_PTR(u) ((void*) ((uintptr_t) (u)))
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#define PTR_TO_ULONG(p) ((unsigned long) ((uintptr_t) (p)))
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#define ULONG_TO_PTR(u) ((void*) ((uintptr_t) (u)))
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#define PTR_TO_INT(p) ((int) ((intptr_t) (p)))
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#define INT_TO_PTR(u) ((void*) ((intptr_t) (u)))
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#define TO_INT32(p) ((int32_t) ((intptr_t) (p)))
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#define INT32_TO_PTR(u) ((void*) ((intptr_t) (u)))
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#define PTR_TO_LONG(p) ((long) ((intptr_t) (p)))
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#define LONG_TO_PTR(u) ((void*) ((intptr_t) (u)))
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#define memzero(x,l) (memset((x), 0, (l)))
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#define zero(x) (memzero(&(x), sizeof(x)))
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#define char_array_0(x) x[sizeof(x)-1] = 0;
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#define IOVEC_SET_STRING(i, s) \
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do { \
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struct iovec *_i = &(i); \
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char *_s = (char *)(s); \
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_i->iov_base = _s; \
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_i->iov_len = strlen(_s); \
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} while(false)
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static inline size_t IOVEC_TOTAL_SIZE(const struct iovec *i, unsigned n) {
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unsigned j;
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size_t r = 0;
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for (j = 0; j < n; j++)
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r += i[j].iov_len;
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return r;
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}
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static inline size_t IOVEC_INCREMENT(struct iovec *i, unsigned n, size_t k) {
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unsigned j;
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for (j = 0; j < n; j++) {
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size_t sub;
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if (_unlikely_(k <= 0))
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break;
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sub = MIN(i[j].iov_len, k);
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i[j].iov_len -= sub;
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i[j].iov_base = (uint8_t*) i[j].iov_base + sub;
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k -= sub;
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}
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return k;
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}
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#define _cleanup_free_ __attribute__((cleanup(freep)))
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#define _cleanup_fclose_ __attribute__((cleanup(fclosep)))
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#define _cleanup_close_ __attribute__((cleanup(closep)))
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#define _cleanup_closedir_ __attribute__((cleanup(closedirp)))
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#define _cleanup_umask_ __attribute__((cleanup(umaskp)))
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#define _cleanup_strv_free_ __attribute__((cleanup(strv_freep)))
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#define VA_FORMAT_ADVANCE(format, ap) \
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do { \
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int _argtypes[128]; \
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size_t _i, _k; \
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_k = parse_printf_format((format), ELEMENTSOF(_argtypes), _argtypes); \
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assert(_k < ELEMENTSOF(_argtypes)); \
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for (_i = 0; _i < _k; _i++) { \
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if (_argtypes[_i] & PA_FLAG_PTR) { \
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(void) va_arg(ap, void*); \
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continue; \
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} \
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\
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switch (_argtypes[_i]) { \
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case PA_INT: \
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case PA_INT|PA_FLAG_SHORT: \
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case PA_CHAR: \
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(void) va_arg(ap, int); \
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break; \
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case PA_INT|PA_FLAG_LONG: \
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(void) va_arg(ap, long int); \
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break; \
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case PA_INT|PA_FLAG_LONG_LONG: \
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(void) va_arg(ap, long long int); \
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break; \
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case PA_WCHAR: \
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(void) va_arg(ap, wchar_t); \
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break; \
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case PA_WSTRING: \
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case PA_STRING: \
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case PA_POINTER: \
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(void) va_arg(ap, void*); \
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break; \
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case PA_FLOAT: \
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case PA_DOUBLE: \
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(void) va_arg(ap, double); \
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break; \
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case PA_DOUBLE|PA_FLAG_LONG_DOUBLE: \
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(void) va_arg(ap, long double); \
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break; \
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default: \
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assert_not_reached("Unknown format string argument."); \
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} \
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} \
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} while(false)
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#include "log.h"
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