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// -*- mode: cpp; mode: fold -*-
// SPDX-License-Identifier: GPL-2.0+
// Description /*{{{*/
/* ######################################################################
Macros Header - Various useful macro definitions
This file had this historic note, but now includes further changes
under the GPL-2.0+:
This source is placed in the Public Domain, do with it what you will
It was originally written by Brian C. White.
##################################################################### */
/*}}}*/
// Private header
#ifndef MACROS_H
#define MACROS_H
/* Useful count macro, use on an array of things and it will return the
number of items in the array */
#define APT_ARRAY_SIZE(a) (sizeof(a) / sizeof(a[0]))
// Flag Macros
#define FLAG(f) (1L << (f))
#define SETFLAG(v,f) ((v) |= FLAG(f))
#define CLRFLAG(v,f) ((v) &=~FLAG(f))
#define CHKFLAG(v,f) ((v) & FLAG(f) ? true : false)
#ifdef __GNUC__
#define APT_GCC_VERSION (__GNUC__ << 8 | __GNUC_MINOR__)
#else
#define APT_GCC_VERSION 0
#endif
#ifdef APT_COMPILING_APT
/* likely() and unlikely() can be used to mark boolean expressions
as (not) likely true which will help the compiler to optimise */
#if APT_GCC_VERSION >= 0x0300
#define likely(x) __builtin_expect (!!(x), 1)
#define unlikely(x) __builtin_expect (!!(x), 0)
#else
#define likely(x) (x)
#define unlikely(x) (x)
#endif
#endif
#if APT_GCC_VERSION >= 0x0300
#define APT_DEPRECATED __attribute__ ((deprecated))
#define APT_DEPRECATED_MSG(X) __attribute__ ((deprecated(X)))
// __attribute__((const)) is too dangerous for us, we end up using it wrongly
#define APT_PURE __attribute__((pure))
#define APT_NORETURN __attribute__((noreturn))
#define APT_PRINTF(n) __attribute__((format(printf, n, n + 1)))
#define APT_WEAK __attribute__((weak));
#define APT_UNUSED __attribute__((unused))
#else
#define APT_DEPRECATED
#define APT_DEPRECATED_MSG
#define APT_PURE
#define APT_NORETURN
#define APT_PRINTF(n)
#define APT_WEAK
#define APT_UNUSED
#endif
#if APT_GCC_VERSION > 0x0302
#define APT_NONNULL(...) __attribute__((nonnull(__VA_ARGS__)))
#define APT_MUSTCHECK __attribute__((warn_unused_result))
#else
#define APT_NONNULL(...)
#define APT_MUSTCHECK
#endif
#if APT_GCC_VERSION >= 0x0400
#define APT_SENTINEL __attribute__((sentinel))
#define APT_PUBLIC __attribute__ ((visibility ("default")))
#define APT_HIDDEN __attribute__ ((visibility ("hidden")))
#else
#define APT_SENTINEL
#define APT_PUBLIC
#define APT_HIDDEN
#endif
// cold functions are unlikely() to be called
#if APT_GCC_VERSION >= 0x0403
#define APT_COLD __attribute__ ((__cold__))
#define APT_HOT __attribute__ ((__hot__))
#else
#define APT_COLD
#define APT_HOT
#endif
#if __GNUC__ >= 4
#define APT_IGNORE_DEPRECATED_PUSH \
_Pragma("GCC diagnostic push") \
_Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"")
#define APT_IGNORE_DEPRECATED_POP \
_Pragma("GCC diagnostic pop")
/* gcc has various problems with this shortcut, so prefer the long form */
#define APT_IGNORE_DEPRECATED(XXX) \
APT_IGNORE_DEPRECATED_PUSH \
XXX \
APT_IGNORE_DEPRECATED_POP
#else
#define APT_IGNORE_DEPRECATED_PUSH
#define APT_IGNORE_DEPRECATED_POP
#define APT_IGNORE_DEPRECATED(XXX) XXX
#endif
#if __cplusplus >= 201103L
#define APT_OVERRIDE override
#else
#define APT_OVERRIDE /* no c++11 standard */
#endif
// These lines are extracted by the makefiles and the buildsystem
// Increasing MAJOR or MINOR results in the need of recompiling all
// reverse-dependencies of libapt-pkg against the new SONAME.
// Non-ABI-Breaks should only increase RELEASE number.
// See also buildlib/libversion.mak
#define APT_PKG_MAJOR 6
#define APT_PKG_MINOR 0
#define APT_PKG_RELEASE 0
#define APT_PKG_ABI ((APT_PKG_MAJOR * 100) + APT_PKG_MINOR)
/* Should be a multiple of the common page size (4096) */
static constexpr unsigned long long APT_BUFFER_SIZE = 64 * 1024;
#endif
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