196 lines
4.7 KiB
C
196 lines
4.7 KiB
C
#ifndef __ZZIP_INTERNAL_HINTS_H
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#define __ZZIP_INTERNAL_HINTS_H
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#include <zzip/conf.h>
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#ifndef ZZIP_GNUC_ATLEAST
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# if defined __GNUC__ && defined __GNUC_MINOR__
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# define ZZIP_GNUC_ATLEAST(_M_,_N_) \
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((__GNUC__ << 10) + __GNUC_MINOR__ >= ((_M_) << 10) + (_N_))
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# elif defined __GNUC__
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# define ZZIP_GNUC_ATLEAST(_M_,_N_) \
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((__GNUC__ << 10) >= ((_M_) << 10))
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# else
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# define ZZIP_GNUC_ATLEAST(_M_, _N_) 0
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# endif
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#endif
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#ifndef ZZIP_GNUC_EXTENSION
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# if ZZIP_GNUC_ATLEAST(2,8)
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# define ZZIP_GNUC_EXTENSION __extension__
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# else
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# define ZZIP_GNUC_EXTENSION
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# endif
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#endif
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/* func has no side effects, return value depends only on params and globals */
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#ifndef ZZIP_GNUC_PURE
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# if ZZIP_GNUC_ATLEAST(2,8)
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# define ZZIP_GNUC_PURE __attribute__((__pure__))
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# else
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# define ZZIP_GNUC_PURE
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# endif
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#endif
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/* func has no side effects, return value depends only on params */
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#ifndef ZZIP_GNUC_CONST
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# if ZZIP_GNUC_ATLEAST(2,4)
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# define ZZIP_GNUC_CONST __attribute__((__const__))
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# else
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# define ZZIP_GNUC_CONST
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# endif
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#endif
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/* typename / variable / function possibly unused */
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#ifndef ZZIP_GNUC_UNUSED
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# if ZZIP_GNUC_ATLEAST(2,4)
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# define ZZIP_GNUC_UNUSED __attribute__((__unused__))
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# else
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# define ZZIP_GNUC_UNUSED
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# endif
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#endif
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/* obvious. btw, a noreturn-func should return void */
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#ifndef ZZIP_GNUC_NORETURN
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# if ZZIP_GNUC_ATLEAST(2,5)
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# define ZZIP_GNUC_NORETURN __attribute__((__noreturn__))
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# else
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# define ZZIP_GNUC_NORETURN
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# endif
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#endif
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/* omit function from profiling with -finstrument-functions */
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#ifndef ZZIP_GNUC_NO_INSTRUMENT
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# if ZZIP_GNUC_ATLEAST(2,4)
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# define ZZIP_GNUC_NO_INSTRUMENT __attribute__((__no_instrument_function__))
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# else
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# define ZZIP_GNUC_NO_INSTRUMENT
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# endif
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#endif
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/* all pointer args must not be null, and allow optimiztons based on the fact*/
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#ifndef ZZIP_GNUC_NONNULL
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# if ZZIP_GNUC_ATLEAST(3,1)
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# define ZZIP_GNUC_NONNULL __attribute__((nonnull))
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# else
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# define ZZIP_GNUC_NONNULL
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# endif
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#endif
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/* the function can not throw - the libc function are usually nothrow */
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#ifndef ZZIP_GNUC_NOTHROW
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# if ZZIP_GNUC_ATLEAST(3,2)
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# define ZZIP_GNUC_NOTHROW __attribute__((nothrow))
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# else
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# define ZZIP_GNUC_NOTHROW
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# endif
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#endif
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/* typename / function / variable is obsolete but still listed in headers */
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#ifndef ZZIP_GNUC_DEPRECATED
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# if ZZIP_GNUC_ATLEAST(3,1)
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# define ZZIP_GNUC_DEPRECATED __attribute__((deprecated))
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# else
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# define ZZIP_GNUC_DEPRECATED
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# endif
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#endif
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/* resolve references to this function during pre-linking the library */
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#ifndef ZZIP_GNUC_LIB_PROTECTED
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# if ZZIP_GNUC_ATLEAST(3,1)
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# define ZZIP_GNUC_LIB_PROTECTED __attribute__((visiblity("protected")))
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# else
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# define ZZIP_GNUC_LIB_PROTECTED
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# endif
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#endif
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/* func shall only be usable within the same lib (so, no entry in lib symtab)*/
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#ifndef ZZIP_GNUC_LIB_PRIVATE
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# if ZZIP_GNUC_ATLEAST(3,1)
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# define ZZIP_GNUC_LIB_PRIVATE __attribute__((visiblity("hidden")))
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# else
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# define ZZIP_GNUC_LIB_PRIVATE
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# endif
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#endif
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/* ... and not even passed as a function pointer reference to outside the lib*/
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#ifndef ZZIP_GNUC_LIB_INTERNAL
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# if ZZIP_GNUC_ATLEAST(3,1)
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# define ZZIP_GNUC_LIB_INTERNAL __attribute__((visiblity("internal")))
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# else
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# define ZZIP_GNUC_LIB_INTERNAL
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# endif
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#endif
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#ifndef ZZIP_GNUC_FORMAT
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# if ZZIP_GNUC_ATLEAST(2,4)
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# define ZZIP_GNUC_FORMAT(_X_) __attribute__((__format_arg__(_X_)))
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# else
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# define ZZIP_GNUC_FORMAT(_X_)
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# endif
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#endif
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#ifndef ZZIP_GNUC_SCANF
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# if ZZIP_GNUC_ATLEAST(2,4)
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# define ZZIP_GNUC_SCANF(_S_,_X_) __attribute__((__scanf__(_S_,_X_)))
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# else
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# define ZZIP_GNUC_SCANF(_S_,_X_)
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# endif
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#endif
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#ifndef ZZIP_GNUC_PRINTF
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# if ZZIP_GNUC_ATLEAST(2,4)
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# define ZZIP_GNUC_PRINTF(_S_,_X_) __attribute__((__printf__(_S_,_X_)))
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# else
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# define ZZIP_GNUC_PRINTF(_S_,_X_)
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# endif
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#endif
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#ifdef __GNUC__
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#define ZZIP_GNUC_PACKED __attribute__((packed))
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#else
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#define ZZIP_GNUC_PACKED
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#endif
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#ifndef ZZIP_FUNCTION
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# if ZZIP_GNUC_ATLEAST(2,6)
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# define ZZIP_FUNC __FUNCTION__
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# define ZZIP_FUNCTION __FUNCTION__
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# elif defined __STDC_VERSION__ && __STDC_VERSION__ >= 199901L
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# define ZZIP_FUNC __func__
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# define ZZIP_FUNCTION ""
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# else
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# define ZZIP_FUNC 0
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# define ZZIP_FUNCTION ""
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# endif
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#endif
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#ifndef ZZIP_STRING
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#define ZZIP_STRING(_X_) ZZIP_STRING_(_X_)
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#define ZZIP_STRING_(_Y_) #_Y_
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#endif
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#ifndef ZZIP_DIM
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#define ZZIP_DIM(_A_) (sizeof(_A_) / sizeof ((_A_)[0]))
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#endif
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#if !(defined ZZIP_FOR1 && defined ZZIP_END1)
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# if defined sun || defined __sun__
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# define ZZIP_FOR1 if (1)
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# define ZZIP_END1 else (void)0
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# else
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# define ZZIP_FOR1 do
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# define ZZIP_END1 while (0)
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# endif
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#endif
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#ifndef ZZIP_BRANCH_OVER
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# if ZZIP_GNUC_ATLEAST(2,96)
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# define ZZIP_BRANCH_OVER(_X_) __builtin_expect((_X_),0)
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# else
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# define ZZIP_BRANCH_OVER(_X_) (_X_)
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# endif
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#endif
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#endif
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