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pcompress/utils/utils.h
Moinak Ghosh 0192790c02 Add Dispack filter with auto-detection of x86 executables in archive mode. 
More elaborate magic header based detection of 32-bit and 64-bit x86 binaries.
Always use fast-mode LZ4 in Adaptive modes.
2013-11-24 19:45:58 +05:30

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/*
* This file is a part of Pcompress, a chunked parallel multi-
* algorithm lossless compression and decompression program.
*
* Copyright (C) 2012-2013 Moinak Ghosh. All rights reserved.
* Use is subject to license terms.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 3 of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this program.
* If not, see <http://www.gnu.org/licenses/>.
*
* moinakg@belenix.org, http://moinakg.wordpress.com/
*
*/
#ifndef _UTILS_H
#define _UTILS_H
#include <arpa/nameser_compat.h>
#include <arpa/inet.h>
#include <sys/types.h>
#ifndef __STDC_FORMAT_MACROS
#define __STDC_FORMAT_MACROS 1
#endif
#include <inttypes.h>
#include <sys/param.h>
#include <stdint.h>
#include <assert.h>
#include <cpuid.h>
#ifdef __cplusplus
extern "C" {
#endif
#define DATA_TEXT 1
#define DATA_BINARY 2
#define EIGHTM (8UL * 1024UL * 1024UL)
#define FOURM (4UL * 1024UL * 1024UL)
#define ONE_PB (1125899906842624ULL)
#define ONE_TB (1099511627776ULL)
#define TWO_MB (2UL * 1024UL * 1024UL)
#define FOUR_MB FOURM
#define EIGHT_MB EIGHTM
#define EIGHT_GB (8589934592ULL)
#define SIXTEEN_GB (EIGHT_GB * 2)
#if !defined(sun) && !defined(__sun)
typedef unsigned char uchar_t ;
#endif
#if ULONG_MAX == 4294967295UL
# ifndef UINT64_C
# define UINT64_C(n) n ## ULL
# endif
#else
# ifndef UINT64_C
# define UINT64_C(n) n ## UL
# endif
#endif
#ifndef UINT64_MAX
#define UINT64_MAX (18446744073709551615ULL)
#endif
typedef unsigned long uintptr_t;
typedef int32_t bsize_t;
#undef WORDS_BIGENDIAN
#if BYTE_ORDER == BIG_ENDIAN
# define WORDS_BIGENDIAN
# ifndef htonll
# define htonll(x) (x)
# endif
# ifndef ntonll
# define ntohll(x) (x)
# endif
# if !defined(sun) && !defined (__sun)
# define LE64(x) __bswap_64(x)
# define LE32(x) __bswap_32(x)
# define LE16(x) __bswap_16(x)
# else
# define LE64(x) BSWAP_64(x)
# define LE32(x) BSWAP_32(x)
# define LE16(x) BSWAP_16(x)
# endif
#else
# if !defined(sun) && !defined (__sun)
# ifndef htonll
# define htonll(x) __bswap_64(x)
# endif
# ifndef ntohll
# define ntohll(x) __bswap_64(x)
# endif
# endif
# define LE64(x) (x)
# define LE32(x) (x)
# define LE16(x) (x)
#endif
// These allow helping the compiler in some often-executed branches, whose
// result is almost always the same.
#ifdef __GNUC__
# define likely(expr) __builtin_expect(expr, 1)
# define unlikely(expr) __builtin_expect(expr, 0)
# define ATOMIC_ADD(var, val) __sync_fetch_and_add(&var, val)
# define ATOMIC_SUB(var, val) __sync_fetch_and_sub(&var, val)
# define PREFETCH_WRITE(x, n) __builtin_prefetch((x), 1, (n))
# define PREFETCH_READ(x, n) __builtin_prefetch((x), 0, (n))
# define NOINLINE_ATTR __attribute__((noinline))
#else
# define likely(expr) (expr)
# define unlikely(expr) (expr)
# define PREFETCH_WRITE(x, n)
# define PREFETCH_READ(x, n)
# define NOINLINE_ATTR
# if defined(sun) || defined (__sun)
# include <atomic.h>
# define ATOMIC_ADD(var, val) atomic_add_int(&var, val)
# define ATOMIC_SUB(var, val) atomic_add_int(&var, -val)
# else
// Dunno what to do
# define ATOMIC_ADD(var, val) var += val
# define ATOMIC_SUB(var, val) var -= val
# endif
#endif
#ifdef __GNUC__
#define DLL_EXPORT __attribute__ ((visibility ("default")))
#define DLL_LOCAL __attribute__ ((visibility ("hidden")))
#else
#define DLL_EXPORT
#define DLL_LOCAL
#endif
#define ISP2(x) ((x != 0) && ((x & (~x + 1)) == x))
#ifdef DEBUG_STATS
#define DEBUG_STAT_EN(...) __VA_ARGS__;
#else
#define DEBUG_STAT_EN(...)
#endif
#define PATHSEP_CHAR '/'
#define BYTES_TO_MB(x) ((x) / (1024 * 1024))
#define U64_P(x) *((uint64_t *)(x))
#define U32_P(x) *((uint32_t *)(x))
#define U16_P(x) *((uint16_t *)(x))
#define I64_P(x) *((int64_t *)(x))
#define I32_P(x) *((int32_t *)(x))
#define I16_P(x) *((int16_t *)(x))
/*
* Public checksum properties. CKSUM_MAX_BYTES must be updated if a
* newer larger checksum is added to the list.
*/
typedef enum {
CKSUM_CRC64 = 0x100,
CKSUM_BLAKE256 = 0x200,
CKSUM_BLAKE512 = 0x300,
CKSUM_SHA256 = 0x400,
CKSUM_SHA512 = 0x500,
CKSUM_KECCAK256 = 0x600,
CKSUM_KECCAK512 = 0x700,
/*
* Backwards compatibility options. SKEIN in release 1.2 was replaced with
* Blake2 from 1.3 onwards (for sheer speed of Blake2). We want to be able
* to decode archives created with 1.2. New archives do not use SKEIN.
*
* However SKEIN can be used as a chunk/block hash for Global Deduplication.
* So it will not be removed.
*/
CKSUM_SKEIN256 = 0x800,
CKSUM_SKEIN512 = 0x900,
CKSUM_INVALID = 0
} cksum_t;
typedef enum {
COMPRESS_NONE = 0,
COMPRESS_LZFX,
COMPRESS_LZ4,
COMPRESS_ZLIB,
COMPRESS_BZIP2,
COMPRESS_LZMA,
COMPRESS_INVALID
} compress_algo_t;
typedef struct {
uint32_t buf_extra;
int compress_mt_capable;
int decompress_mt_capable;
int single_chunk_mt_capable;
int is_single_chunk;
int nthreads;
int c_max_threads;
int d_max_threads;
int delta2_span;
int deltac_min_distance;
cksum_t cksum;
} algo_props_t;
typedef enum {
COMPRESS_THREADS = 1,
DECOMPRESS_THREADS
} algo_threads_type_t;
typedef struct{
int64_t totalram;
int64_t freeram;
int64_t totalswap;
int64_t freeswap;
int64_t mem_unit;
int64_t sharedram;
} my_sysinfo;
struct fn_list {
char *filename;
struct fn_list *next;
};
/*
* Enumerated type constants for file type identification in pc_archive.
*/
typedef enum {
/*
* Primary Types.
*/
TYPE_UNKNOWN = 0,
TYPE_TEXT = 1,
TYPE_BINARY = 2,
TYPE_COMPRESSED = 4,
/*
* Sub-types.
*/
#define NUM_SUB_TYPES 24
TYPE_EXE32 = 8,
TYPE_JPEG = 16,
TYPE_MARKUP = 24,
TYPE_COMPRESSED_GZ = 32,
TYPE_COMPRESSED_LZW = 40,
TYPE_COMPRESSED_BZ2 = 48,
TYPE_COMPRESSED_ZIP = 56,
TYPE_COMPRESSED_ARJ = 64,
TYPE_COMPRESSED_ARC = 72,
TYPE_COMPRESSED_LH = 80,
TYPE_COMPRESSED_LZMA = 88,
TYPE_COMPRESSED_LZO = 96,
TYPE_COMPRESSED_UHARC = 104,
TYPE_COMPRESSED_ALZ = 112,
TYPE_COMPRESSED_ACE = 120,
TYPE_COMPRESSED_RAR = 128,
TYPE_COMPRESSED_LZ = 136,
TYPE_COMPRESSED_PPMD = 144,
TYPE_COMPRESSED_ZPAQ = 152,
TYPE_PACKJPG = 160,
TYPE_DNA_SEQ = 168,
TYPE_MJPEG = 176,
TYPE_AUDIO_COMPRESSED = 184,
TYPE_EXE64 = 192
} data_type_t;
/*
* Type identifier is an int with the following format.
*
* Sub Type Primary Type
* (Numeric Value) (Bit Positions - Flags)
* _____________|_____________ ___|___
* | | | |
* .---------------------------------------.
* | | | | | | | | | | |
* Bit 10 Bit 0
*/
#define PC_TYPE_MASK 0x7
#define PC_SUBTYPE_MASK 0x7f8
#define PC_SUBTYPE(x) ((x) & PC_SUBTYPE_MASK)
#define PC_TYPE(x) ((x) & PC_TYPE_MASK)
#ifndef _IN_UTILS_
extern processor_info_t proc_info;
#endif
extern void err_exit(int show_errno, const char *format, ...);
extern void err_print(int show_errno, const char *format, ...);
extern const char *get_execname(const char *);
extern int parse_numeric(int64_t *val, const char *str);
extern char *bytes_to_size(uint64_t bytes);
extern int64_t Read(int fd, void *buf, uint64_t count);
extern int64_t Read_Adjusted(int fd, uchar_t *buf, uint64_t count,
int64_t *rabin_count, void *ctx, void *pctx);
extern int64_t Write(int fd, const void *buf, uint64_t count);
extern void set_threadcounts(algo_props_t *props, int *nthreads, int nprocs,
algo_threads_type_t typ);
extern uint64_t get_total_ram();
extern double get_wtime_millis(void);
extern double get_mb_s(uint64_t bytes, double strt, double en);
extern void get_sys_limits(my_sysinfo *msys_info);
extern int chk_dir(char *dir);
extern void init_algo_props(algo_props_t *props);
extern void init_pcompress();
extern char *get_temp_dir();
/* Pointer type for compress and decompress functions. */
typedef int (*compress_func_ptr)(void *src, uint64_t srclen, void *dst,
uint64_t *destlen, int level, uchar_t chdr, int btype, void *data);
typedef enum {
COMPRESS,
DECOMPRESS
} compress_op_t;
/* Pointer type for algo specific init/deinit/stats functions. */
typedef int (*init_func_ptr)(void **data, int *level, int nthreads, uint64_t chunksize,
int file_version, compress_op_t op);
typedef int (*deinit_func_ptr)(void **data);
typedef void (*stats_func_ptr)(int show);
typedef void (*props_func_ptr)(algo_props_t *data, int level, uint64_t chunksize);
/*
* Logging definitions.
*/
typedef enum {
LOG_OUTPUT,
LOG_FILE,
LOG_CALLBACK
} log_dest_type_t;
typedef enum {
LOG_ERR,
LOG_WARN,
LOG_INFO
} log_level_t;
typedef void (*log_callback_ptr)(char *msg);
typedef struct {
log_dest_type_t type;
int fd;
log_callback_ptr cb;
} log_dest_t;
void set_log_dest(log_dest_t *dest);
void set_log_level(int level);
void log_msg(log_level_t log_level, int show_errno, const char *format, ...);
/*
* Tempfile cleanup handlers and tempfile registration routines.
*/
void Int_Handler(int signo);
void handle_signals();
void add_fname(char *fn);
void rm_fname(char *fn);
/*
* Some types (like Jpeg) are totally incompressible.
*/
int is_incompressible(int type);
/*
* Roundup v to the nearest power of 2. From Bit Twiddling Hacks:
* http://graphics.stanford.edu/~seander/bithacks.html
*/
static inline unsigned int
roundup_pow_two(unsigned int v) {
v--;
v |= v >> 1;
v |= v >> 2;
v |= v >> 4;
v |= v >> 8;
v |= v >> 16;
v++;
return (v);
}
#ifdef __cplusplus
}
#endif
#endif
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