113 lines
3.5 KiB
C
113 lines
3.5 KiB
C
#ifndef PROCPS_PROC_PROCPS_H
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#define PROCPS_PROC_PROCPS_H
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#ifdef __cplusplus
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#define EXTERN_C_BEGIN extern "C" {
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#define EXTERN_C_END }
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#else
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#define EXTERN_C_BEGIN
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#define EXTERN_C_END
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#endif
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// Some ports make the mistake of running a 32-bit userspace
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// on a 64-bit kernel. Shame on them. It's not at all OK to
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// make everything "long long", since that causes unneeded
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// slowness on 32-bit hardware.
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//
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// SPARC: The 32-bit kernel was looking like an ex-penguin,
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// but it lives! ("I'm not dead yet.") So, 64-bit users will
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// just have to compile for 64-bit. Aw, the suffering.
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//
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// MIPS: Used 32-bit for embedded systems and obsolete hardware.
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// The 64-bit systems use an n32 format executable, defining
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// _ABIN32 to indicate this. Since n32 doesn't currently run on
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// any 32-bit system, nobody get hurt if it's bloated. Not that
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// this is sane of course, but it won't hurt the 32-bit users.
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// __mips_eabi means eabi, which comes in both sizes, but isn't used.
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//
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// PowerPC: Big ugly problem! 32-bit Macs are still popular. :-/
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//
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// x86-64: So far, nobody has been dumb enough to go 32-bit.
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//
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// Unknown: PA-RISC and zSeries
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//
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#if defined(k64test) || (defined(_ABIN32) && _MIPS_SIM == _ABIN32)
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#define KLONG long long // not typedef; want "unsigned KLONG" to work
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#define KLF "L"
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#define STRTOUKL strtoull
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#else
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#define KLONG long
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#define KLF "l"
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#define STRTOUKL strtoul
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#endif
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// since gcc-2.5
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#define NORETURN __attribute__((__noreturn__))
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#define FUNCTION __attribute__((__const__)) // no access to global mem, even via ptr, and no side effect
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#if !defined(restrict) && __STDC_VERSION__ < 199901
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#if __GNUC__ > 2 || __GNUC_MINOR__ >= 92
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#define restrict __restrict__
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#else
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#warning No restrict keyword?
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#define restrict
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#endif
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#endif
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#if __GNUC__ > 2 || __GNUC_MINOR__ >= 96
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// won't alias anything, and aligned enough for anything
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#define MALLOC __attribute__ ((__malloc__))
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// no side effect, may read globals
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#define PURE __attribute__ ((__pure__))
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// tell gcc what to expect: if(unlikely(err)) die(err);
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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 expected(x,y) __builtin_expect((x),(y))
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#else
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#define MALLOC
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#define PURE
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#define likely(x) (x)
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#define unlikely(x) (x)
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#define expected(x,y) (x)
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#endif
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#if SHARED==1 && (__GNUC__ > 2 || __GNUC_MINOR__ >= 96)
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#define LABEL_OFFSET
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#endif
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#define STRINGIFY_ARG(a) #a
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#define STRINGIFY(a) STRINGIFY_ARG(a)
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// marks old junk, to warn non-procps-ng library users
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#if ( __GNUC__ == 3 && __GNUC_MINOR__ > 0 ) || __GNUC__ > 3
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#define OBSOLETE __attribute__((deprecated))
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#else
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#define OBSOLETE
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#endif
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#if ( __GNUC__ == 3 && __GNUC_MINOR__ > 1 ) || __GNUC__ > 3
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// Tells gcc that function is library-internal;
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// so no need to do dynamic linking at run-time.
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// This might work with slightly older compilers too.
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#define HIDDEN __attribute__((visibility("hidden")))
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// The opposite, in case -fvisibility=hidden used
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#define EXPORT __attribute__((visibility("default")))
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// Tell g++ that a function won't throw exceptions.
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#define NOTHROW __attribute__((__nothrow__))
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#else
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#define HIDDEN
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#define EXPORT
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#define NOTHROW
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#endif
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// Like HIDDEN, but for an alias that gets created.
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// In gcc-3.2 there is an alias+hidden conflict.
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// Many will have patched this bug, but oh well.
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#if ( __GNUC__ == 3 && __GNUC_MINOR__ > 2 ) || __GNUC__ > 3
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#define HIDDEN_ALIAS(x) extern __typeof(x) x##_direct __attribute__((alias(#x),visibility("hidden")))
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#else
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#define HIDDEN_ALIAS(x) extern __typeof(x) x##_direct __attribute__((alias(#x)))
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#endif
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#endif
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