mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-12-12 01:12:12 +00:00
186 lines
5.3 KiB
C++
186 lines
5.3 KiB
C++
#ifndef ZUTIL_H_
|
|
#define ZUTIL_H_
|
|
/* zutil.h -- internal interface and configuration of the compression library
|
|
* Copyright (C) 1995-2013 Jean-loup Gailly.
|
|
* For conditions of distribution and use, see copyright notice in zlib.h
|
|
*/
|
|
|
|
/* WARNING: this file should *not* be used by applications. It is
|
|
part of the implementation of the compression library and is
|
|
subject to change. Applications should only use zlib.h.
|
|
*/
|
|
|
|
/* @(#) $Id$ */
|
|
|
|
#if defined(HAVE_INTERNAL)
|
|
# define ZLIB_INTERNAL __attribute__((visibility ("internal")))
|
|
#elif defined(HAVE_HIDDEN)
|
|
# define ZLIB_INTERNAL __attribute__((visibility ("hidden")))
|
|
#else
|
|
# define ZLIB_INTERNAL
|
|
#endif
|
|
|
|
#include <stddef.h>
|
|
#include <string.h>
|
|
#include <stdlib.h>
|
|
#include <stdint.h>
|
|
#include "zlib.h"
|
|
|
|
#ifndef local
|
|
# define local static
|
|
#endif
|
|
/* compile with -Dlocal if your debugger can't find static symbols */
|
|
|
|
typedef unsigned char uch; /* Included for compatibility with external code only */
|
|
typedef uint16_t ush; /* Included for compatibility with external code only */
|
|
typedef unsigned long ulg;
|
|
|
|
extern const char * const z_errmsg[10]; /* indexed by 2-zlib_error */
|
|
/* (size given to avoid silly warnings with Visual C++) */
|
|
|
|
#define ERR_MSG(err) z_errmsg[Z_NEED_DICT-(err)]
|
|
|
|
#define ERR_RETURN(strm, err) return (strm->msg = ERR_MSG(err), (err))
|
|
/* To be used only when the state is known to be valid */
|
|
|
|
/* common constants */
|
|
|
|
#ifndef DEF_WBITS
|
|
# define DEF_WBITS MAX_WBITS
|
|
#endif
|
|
/* default windowBits for decompression. MAX_WBITS is for compression only */
|
|
|
|
#if MAX_MEM_LEVEL >= 8
|
|
# define DEF_MEM_LEVEL 8
|
|
#else
|
|
# define DEF_MEM_LEVEL MAX_MEM_LEVEL
|
|
#endif
|
|
/* default memLevel */
|
|
|
|
#define STORED_BLOCK 0
|
|
#define STATIC_TREES 1
|
|
#define DYN_TREES 2
|
|
/* The three kinds of block type */
|
|
|
|
#define MIN_MATCH 3
|
|
#define MAX_MATCH 258
|
|
/* The minimum and maximum match lengths */
|
|
|
|
#define PRESET_DICT 0x20 /* preset dictionary flag in zlib header */
|
|
|
|
/* target dependencies */
|
|
|
|
#ifdef WIN32
|
|
# ifndef __CYGWIN__ /* Cygwin is Unix, not Win32 */
|
|
# define OS_CODE 0x0b
|
|
# endif
|
|
#endif
|
|
|
|
#if (defined(_MSC_VER) && (_MSC_VER > 600))
|
|
# define fdopen(fd, type) _fdopen(fd, type)
|
|
#endif
|
|
|
|
/* provide prototypes for these when building zlib without LFS */
|
|
#if !defined(WIN32) && !defined(__MSYS__) && (!defined(_LARGEFILE64_SOURCE) || _LFS64_LARGEFILE-0 == 0)
|
|
ZEXTERN uint32_t ZEXPORT adler32_combine64(uint32_t, uint32_t, z_off_t);
|
|
ZEXTERN uint32_t ZEXPORT crc32_combine64(uint32_t, uint32_t, z_off_t);
|
|
#endif
|
|
|
|
/* MS Visual Studio does not allow inline in C, only C++.
|
|
But it provides __inline instead, so use that. */
|
|
#if defined(_MSC_VER) && !defined(inline)
|
|
# define inline __inline
|
|
#endif
|
|
|
|
/* common defaults */
|
|
|
|
#ifndef OS_CODE
|
|
# define OS_CODE 0x03 /* assume Unix */
|
|
#endif
|
|
|
|
#ifndef F_OPEN
|
|
# define F_OPEN(name, mode) fopen((name), (mode))
|
|
#endif
|
|
|
|
/* functions */
|
|
|
|
/* Diagnostic functions */
|
|
#ifdef DEBUG
|
|
# include <stdio.h>
|
|
extern int ZLIB_INTERNAL z_verbose;
|
|
extern void ZLIB_INTERNAL z_error(char *m);
|
|
# define Assert(cond, msg) {if(!(cond)) z_error(msg);}
|
|
# define Trace(x) {if (z_verbose >= 0) fprintf x;}
|
|
# define Tracev(x) {if (z_verbose > 0) fprintf x;}
|
|
# define Tracevv(x) {if (z_verbose > 1) fprintf x;}
|
|
# define Tracec(c, x) {if (z_verbose > 0 && (c)) fprintf x;}
|
|
# define Tracecv(c, x) {if (z_verbose > 1 && (c)) fprintf x;}
|
|
#else
|
|
# define Assert(cond, msg)
|
|
# define Trace(x)
|
|
# define Tracev(x)
|
|
# define Tracevv(x)
|
|
# define Tracec(c, x)
|
|
# define Tracecv(c, x)
|
|
#endif
|
|
|
|
void ZLIB_INTERNAL *zcalloc(void *opaque, unsigned items, unsigned size);
|
|
void ZLIB_INTERNAL zcfree(void *opaque, void *ptr);
|
|
|
|
#define ZALLOC(strm, items, size) (*((strm)->zalloc))((strm)->opaque, (items), (size))
|
|
#define ZFREE(strm, addr) (*((strm)->zfree))((strm)->opaque, (void *)(addr))
|
|
#define TRY_FREE(s, p) {if (p) ZFREE(s, p);}
|
|
|
|
/* Reverse the bytes in a 32-bit value. Use compiler intrinsics when
|
|
possible to take advantage of hardware implementations. */
|
|
#if defined(WIN32) && (_MSC_VER >= 1300)
|
|
# pragma intrinsic(_byteswap_ulong)
|
|
# define ZSWAP32(q) _byteswap_ulong(q)
|
|
|
|
#elif defined(__Clang__) || (defined(__GNUC__) && \
|
|
(__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 2)))
|
|
# define ZSWAP32(q) __builtin_bswap32(q)
|
|
|
|
#elif defined(__GNUC__) && (__GNUC__ >= 2) && defined(__linux__)
|
|
# include <byteswap.h>
|
|
# define ZSWAP32(q) bswap_32(q)
|
|
|
|
#elif defined(__FreeBSD__) || defined(__OpenBSD__) || defined(__NetBSD__) || defined(__DragonFly__)
|
|
# include <sys/endian.h>
|
|
# define ZSWAP32(q) bswap32(q)
|
|
|
|
#elif defined(__INTEL_COMPILER)
|
|
# define ZSWAP32(q) _bswap(q)
|
|
|
|
#else
|
|
# define ZSWAP32(q) ((((q) >> 24) & 0xff) + (((q) >> 8) & 0xff00) + \
|
|
(((q) & 0xff00) << 8) + (((q) & 0xff) << 24))
|
|
#endif /* ZSWAP32 */
|
|
|
|
/* Only enable likely/unlikely if the compiler is known to support it */
|
|
#if (defined(__GNUC__) && (__GNUC__ >= 3)) || defined(__INTEL_COMPILER) || defined(__Clang__)
|
|
# ifndef likely
|
|
# define likely(x) __builtin_expect(!!(x), 1)
|
|
# endif
|
|
# ifndef unlikely
|
|
# define unlikely(x) __builtin_expect(!!(x), 0)
|
|
# endif
|
|
#else
|
|
# ifndef likely
|
|
# define likely(x) x
|
|
# endif
|
|
# ifndef unlikely
|
|
# define unlikely(x) x
|
|
# endif
|
|
#endif /* (un)likely */
|
|
|
|
#if defined(_MSC_VER)
|
|
#define ALIGNED_(x) __declspec(align(x))
|
|
#else
|
|
#if defined(__GNUC__)
|
|
#define ALIGNED_(x) __attribute__ ((aligned(x)))
|
|
#endif
|
|
#endif
|
|
|
|
#endif /* ZUTIL_H_ */
|