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Add folder for old versions

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This commit is contained in:
Stella Lau 2017-07-10 06:32:05 -07:00
parent 719ccdc5a5
commit eb280cd568
3 changed files with 872 additions and 0 deletions
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394
contrib/long_distance_matching/versions/v1/ldm.c Normal file
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#include <stdlib.h>
#include <string.h>
#include <stdint.h>
#include <stdio.h>
#include "ldm.h"
#define LDM_MEMORY_USAGE 14
#define LDM_HASHLOG (LDM_MEMORY_USAGE-2)
#define LDM_HASHTABLESIZE (1 << (LDM_MEMORY_USAGE))
#define LDM_HASHTABLESIZE_U32 ((LDM_HASHTABLESIZE) >> 2)
#define LDM_HASH_SIZE_U32 (1 << (LDM_HASHLOG))
#define WINDOW_SIZE (1 << 20)
#define MAX_WINDOW_SIZE 31
#define HASH_SIZE 4
#define MINMATCH 4
#define ML_BITS 4
#define ML_MASK ((1U<<ML_BITS)-1)
#define RUN_BITS (8-ML_BITS)
#define RUN_MASK ((1U<<RUN_BITS)-1)
//#define LDM_DEBUG
typedef uint8_t BYTE;
typedef uint16_t U16;
typedef uint32_t U32;
typedef int32_t S32;
typedef uint64_t U64;
typedef uint64_t tag;
static unsigned LDM_isLittleEndian(void)
{
const union { U32 u; BYTE c[4]; } one = { 1 };
return one.c[0];
}
static U16 LDM_read16(const void *memPtr) {
U16 val;
memcpy(&val, memPtr, sizeof(val));
return val;
}
static U16 LDM_readLE16(const void *memPtr) {
if (LDM_isLittleEndian()) {
return LDM_read16(memPtr);
} else {
const BYTE *p = (const BYTE *)memPtr;
return (U16)((U16)p[0] + (p[1] << 8));
}
}
static void LDM_write32(void *memPtr, U32 value) {
memcpy(memPtr, &value, sizeof(value));
}
static void LDM_write16(void *memPtr, U16 value) {
memcpy(memPtr, &value, sizeof(value));
}
static void LDM_writeLE16(void *memPtr, U16 value) {
if (LDM_isLittleEndian()) {
LDM_write16(memPtr, value);
} else {
BYTE* p = (BYTE*)memPtr;
p[0] = (BYTE) value;
p[1] = (BYTE)(value>>8);
}
}
static U32 LDM_read32(const void *ptr) {
return *(const U32 *)ptr;
}
static U64 LDM_read64(const void *ptr) {
return *(const U64 *)ptr;
}
static void LDM_copy8(void *dst, const void *src) {
memcpy(dst, src, 8);
}
static void LDM_wild_copy(void *dstPtr, const void *srcPtr, void *dstEnd) {
BYTE *d = (BYTE *)dstPtr;
const BYTE *s = (const BYTE *)srcPtr;
BYTE * const e = (BYTE *)dstEnd;
do {
LDM_copy8(d, s);
d += 8;
s += 8;
} while (d < e);
}
struct hash_entry {
U64 offset;
tag t;
};
static U32 LDM_hash(U32 sequence) {
return ((sequence * 2654435761U) >> ((32)-LDM_HASHLOG));
}
static U32 LDM_hash5(U64 sequence) {
static const U64 prime5bytes = 889523592379ULL;
static const U64 prime8bytes = 11400714785074694791ULL;
const U32 hashLog = LDM_HASHLOG;
if (LDM_isLittleEndian())
return (U32)(((sequence << 24) * prime5bytes) >> (64 - hashLog));
else
return (U32)(((sequence >> 24) * prime8bytes) >> (64 - hashLog));
}
static U32 LDM_hash_position(const void * const p) {
return LDM_hash(LDM_read32(p));
}
static void LDM_put_position_on_hash(const BYTE *p, U32 h, void *tableBase,
const BYTE *srcBase) {
U32 *hashTable = (U32 *) tableBase;
hashTable[h] = (U32)(p - srcBase);
}
static void LDM_put_position(const BYTE *p, void *tableBase,
const BYTE *srcBase) {
U32 const h = LDM_hash_position(p);
LDM_put_position_on_hash(p, h, tableBase, srcBase);
}
static const BYTE *LDM_get_position_on_hash(
U32 h, void *tableBase, const BYTE *srcBase) {
const U32 * const hashTable = (U32*)tableBase;
return hashTable[h] + srcBase;
}
static BYTE LDM_read_byte(const void *memPtr) {
BYTE val;
memcpy(&val, memPtr, 1);
return val;
}
static unsigned LDM_count(const BYTE *pIn, const BYTE *pMatch,
const BYTE *pInLimit) {
const BYTE * const pStart = pIn;
while (pIn < pInLimit - 1) {
BYTE const diff = LDM_read_byte(pMatch) ^ LDM_read_byte(pIn);
if (!diff) {
pIn++;
pMatch++;
continue;
}
return (unsigned)(pIn - pStart);
}
return (unsigned)(pIn - pStart);
}
void LDM_read_header(void const *source, size_t *compressed_size,
size_t *decompressed_size) {
const U32 *ip = (const U32 *)source;
*compressed_size = *ip++;
*decompressed_size = *ip;
}
size_t LDM_compress(void const *source, void *dest, size_t source_size,
size_t max_dest_size) {
const BYTE * const istart = (const BYTE*)source;
const BYTE *ip = istart;
const BYTE * const iend = istart + source_size;
const BYTE *ilimit = iend - HASH_SIZE;
const BYTE * const matchlimit = iend - HASH_SIZE;
const BYTE * const mflimit = iend - MINMATCH;
BYTE *op = (BYTE*) dest;
U32 hashTable[LDM_HASHTABLESIZE_U32];
memset(hashTable, 0, sizeof(hashTable));
const BYTE *anchor = (const BYTE *)source;
// struct LDM_cctx cctx;
size_t output_size = 0;
U32 forwardH;
/* Hash first byte: put into hash table */
LDM_put_position(ip, hashTable, istart);
ip++;
forwardH = LDM_hash_position(ip);
//TODO Loop terminates before ip>=ilimit.
while (ip < ilimit) {
const BYTE *match;
BYTE *token;
/* Find a match */
{
const BYTE *forwardIp = ip;
unsigned step = 1;
do {
U32 const h = forwardH;
ip = forwardIp;
forwardIp += step;
if (forwardIp > mflimit) {
goto _last_literals;
}
match = LDM_get_position_on_hash(h, hashTable, istart);
forwardH = LDM_hash_position(forwardIp);
LDM_put_position_on_hash(ip, h, hashTable, istart);
} while (ip - match > WINDOW_SIZE ||
LDM_read64(match) != LDM_read64(ip));
}
// TODO catchup
while (ip > anchor && match > istart && ip[-1] == match[-1]) {
ip--;
match--;
}
/* Encode literals */
{
unsigned const litLength = (unsigned)(ip - anchor);
token = op++;
#ifdef LDM_DEBUG
printf("Cur position: %zu\n", anchor - istart);
printf("LitLength %zu. (Match offset). %zu\n", litLength, ip - match);
#endif
/*
fwrite(match, 4, 1, stdout);
printf("\n");
*/
if (litLength >= RUN_MASK) {
int len = (int)litLength - RUN_MASK;
*token = (RUN_MASK << ML_BITS);
for (; len >= 255; len -= 255) {
*op++ = 255;
}
*op++ = (BYTE)len;
} else {
*token = (BYTE)(litLength << ML_BITS);
}
#ifdef LDM_DEBUG
printf("Literals ");
fwrite(anchor, litLength, 1, stdout);
printf("\n");
#endif
memcpy(op, anchor, litLength);
//LDM_wild_copy(op, anchor, op + litLength);
op += litLength;
}
_next_match:
/* Encode offset */
{
LDM_write32(op, ip - match);
op += 4;
}
/* Encode Match Length */
{
unsigned matchCode;
matchCode = LDM_count(ip + MINMATCH, match + MINMATCH,
matchlimit);
#ifdef LDM_DEBUG
printf("Match length %zu\n", matchCode + MINMATCH);
fwrite(ip, MINMATCH + matchCode, 1, stdout);
printf("\n");
#endif
ip += MINMATCH + matchCode;
if (matchCode >= ML_MASK) {
*token += ML_MASK;
matchCode -= ML_MASK;
LDM_write32(op, 0xFFFFFFFF);
while (matchCode >= 4*0xFF) {
op += 4;
LDM_write32(op, 0xffffffff);
matchCode -= 4*0xFF;
}
op += matchCode / 255;
*op++ = (BYTE)(matchCode % 255);
} else {
*token += (BYTE)(matchCode);
}
#ifdef LDM_DEBUG
printf("\n");
#endif
}
anchor = ip;
LDM_put_position(ip, hashTable, istart);
forwardH = LDM_hash_position(++ip);
}
_last_literals:
/* Encode last literals */
{
size_t const lastRun = (size_t)(iend - anchor);
if (lastRun >= RUN_MASK) {
size_t accumulator = lastRun - RUN_MASK;
*op++ = RUN_MASK << ML_BITS;
for(; accumulator >= 255; accumulator -= 255) {
*op++ = 255;
}
*op++ = (BYTE)accumulator;
} else {
*op++ = (BYTE)(lastRun << ML_BITS);
}
memcpy(op, anchor, lastRun);
op += lastRun;
}
return (op - (BYTE *)dest);
}
size_t LDM_decompress(void const *source, void *dest, size_t compressed_size,
size_t max_decompressed_size) {
const BYTE *ip = (const BYTE *)source;
const BYTE * const iend = ip + compressed_size;
BYTE *op = (BYTE *)dest;
BYTE * const oend = op + max_decompressed_size;
BYTE *cpy;
while (ip < iend) {
size_t length;
const BYTE *match;
size_t offset;
/* get literal length */
unsigned const token = *ip++;
if ((length=(token >> ML_BITS)) == RUN_MASK) {
unsigned s;
do {
s = *ip++;
length += s;
} while (s == 255);
}
#ifdef LDM_DEBUG
printf("Literal length: %zu\n", length);
#endif
/* copy literals */
cpy = op + length;
#ifdef LDM_DEBUG
printf("Literals ");
fwrite(ip, length, 1, stdout);
printf("\n");
#endif
memcpy(op, ip, length);
// LDM_wild_copy(op, ip, cpy);
ip += length;
op = cpy;
/* get offset */
offset = LDM_read32(ip);
#ifdef LDM_DEBUG
printf("Offset: %zu\n", offset);
#endif
ip += 4;
match = op - offset;
// LDM_write32(op, (U32)offset);
/* get matchlength */
length = token & ML_MASK;
if (length == ML_MASK) {
unsigned s;
do {
s = *ip++;
length += s;
} while (s == 255);
}
length += MINMATCH;
#ifdef LDM_DEBUG
printf("Match length: %zu\n", length);
#endif
/* copy match */
cpy = op + length;
// Inefficient for now
while (match < cpy - offset && op < oend) {
*op++ = *match++;
}
}
// memcpy(dest, source, compressed_size);
return op - (BYTE *)dest;
}

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contrib/long_distance_matching/versions/v1/ldm.h Normal file
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#ifndef LDM_H
#define LDM_H
#include <stddef.h> /* size_t */
#define LDM_COMPRESS_SIZE 4
#define LDM_DECOMPRESS_SIZE 4
#define LDM_HEADER_SIZE ((LDM_COMPRESS_SIZE)+(LDM_DECOMPRESS_SIZE))
size_t LDM_compress(void const *source, void *dest, size_t source_size,
size_t max_dest_size);
size_t LDM_decompress(void const *source, void *dest, size_t compressed_size,
size_t max_decompressed_size);
void LDM_read_header(void const *source, size_t *compressed_size,
size_t *decompressed_size);
#endif /* LDM_H */

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contrib/long_distance_matching/versions/v1/main-ldm.c Normal file
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// TODO: file size must fit into a U32
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/time.h>
#include <sys/types.h>
#include <sys/mman.h>
#include <sys/stat.h>
#include <unistd.h>
#include <zstd.h>
#include <fcntl.h>
#include "ldm.h"
// #define BUF_SIZE 16*1024 // Block size
#define DEBUG
//#define ZSTD
#if 0
static size_t compress_file(FILE *in, FILE *out, size_t *size_in,
size_t *size_out) {
char *src, *buf = NULL;
size_t r = 1;
size_t size, n, k, count_in = 0, count_out = 0, offset, frame_size = 0;
src = malloc(BUF_SIZE);
if (!src) {
printf("Not enough memory\n");
goto cleanup;
}
size = BUF_SIZE + LDM_HEADER_SIZE;
buf = malloc(size);
if (!buf) {
printf("Not enough memory\n");
goto cleanup;
}
for (;;) {
k = fread(src, 1, BUF_SIZE, in);
if (k == 0)
break;
count_in += k;
n = LDM_compress(src, buf, k, BUF_SIZE);
// n = k;
// offset += n;
offset = k;
count_out += k;
// k = fwrite(src, 1, offset, out);
k = fwrite(buf, 1, offset, out);
if (k < offset) {
if (ferror(out))
printf("Write failed\n");
else
printf("Short write\n");
goto cleanup;
}
}
*size_in = count_in;
*size_out = count_out;
r = 0;
cleanup:
free(src);
free(buf);
return r;
}
static size_t decompress_file(FILE *in, FILE *out) {
void *src = malloc(BUF_SIZE);
void *dst = NULL;
size_t dst_capacity = BUF_SIZE;
size_t ret = 1;
size_t bytes_written = 0;
if (!src) {
perror("decompress_file(src)");
goto cleanup;
}
while (ret != 0) {
/* Load more input */
size_t src_size = fread(src, 1, BUF_SIZE, in);
void *src_ptr = src;
void *src_end = src_ptr + src_size;
if (src_size == 0 || ferror(in)) {
printf("(TODO): Decompress: not enough input or error reading file\n");
//TODO
ret = 0;
goto cleanup;
}
/* Allocate destination buffer if it hasn't been allocated already */
if (!dst) {
dst = malloc(dst_capacity);
if (!dst) {
perror("decompress_file(dst)");
goto cleanup;
}
}
// TODO
/* Decompress:
* Continue while there is more input to read.
*/
while (src_ptr != src_end && ret != 0) {
// size_t dst_size = src_size;
size_t dst_size = LDM_decompress(src, dst, src_size, dst_capacity);
size_t written = fwrite(dst, 1, dst_size, out);
// printf("Writing %zu bytes\n", dst_size);
bytes_written += dst_size;
if (written != dst_size) {
printf("Decompress: Failed to write to file\n");
goto cleanup;
}
src_ptr += src_size;
src_size = src_end - src_ptr;
}
/* Update input */
}
printf("Wrote %zu bytes\n", bytes_written);
cleanup:
free(src);
free(dst);
return ret;
}
#endif
static size_t compress(const char *fname, const char *oname) {
int fdin, fdout;
struct stat statbuf;
char *src, *dst;
/* open the input file */
if ((fdin = open(fname, O_RDONLY)) < 0) {
perror("Error in file opening");
return 1;
}
/* open the output file */
if ((fdout = open(oname, O_RDWR | O_CREAT | O_TRUNC, (mode_t)0600)) < 0) {
perror("Can't create output file");
return 1;
}
/* find size of input file */
if (fstat (fdin, &statbuf) < 0) {
perror("Fstat error");
return 1;
}
size_t size_in = statbuf.st_size;
/* go to the location corresponding to the last byte */
if (lseek(fdout, size_in + LDM_HEADER_SIZE - 1, SEEK_SET) == -1) {
perror("lseek error");
return 1;
}
/* write a dummy byte at the last location */
if (write(fdout, "", 1) != 1) {
perror("write error");
return 1;
}
/* mmap the input file */
if ((src = mmap(0, statbuf.st_size, PROT_READ, MAP_SHARED, fdin, 0))
== (caddr_t) - 1) {
perror("mmap error for input");
return 1;
}
size_t out_size = statbuf.st_size + LDM_HEADER_SIZE;
/* mmap the output file */
if ((dst = mmap(0, out_size, PROT_READ | PROT_WRITE,
MAP_SHARED, fdout, 0)) == (caddr_t) - 1) {
perror("mmap error for output");
return 1;
}
#ifdef ZSTD
size_t size_out = ZSTD_compress(dst, statbuf.st_size,
src, statbuf.st_size, 1);
#else
size_t size_out = LDM_compress(src, dst + LDM_HEADER_SIZE, statbuf.st_size,
statbuf.st_size);
size_out += LDM_HEADER_SIZE;
// TODO: should depend on LDM_DECOMPRESS_SIZE write32
memcpy(dst, &size_out, 4);
memcpy(dst + 4, &(statbuf.st_size), 4);
printf("Compressed size: %zu\n", size_out);
printf("Decompressed size: %zu\n", statbuf.st_size);
#endif
ftruncate(fdout, size_out);
printf("%25s : %6u -> %7u - %s (%.1f%%)\n", fname,
(unsigned)statbuf.st_size, (unsigned)size_out, oname,
(double)size_out / (statbuf.st_size) * 100);
close(fdin);
close(fdout);
return 0;
}
static size_t decompress(const char *fname, const char *oname) {
int fdin, fdout;
struct stat statbuf;
char *src, *dst;
/* open the input file */
if ((fdin = open(fname, O_RDONLY)) < 0) {
perror("Error in file opening");
return 1;
}
/* open the output file */
if ((fdout = open(oname, O_RDWR | O_CREAT | O_TRUNC, (mode_t)0600)) < 0) {
perror("Can't create output file");
return 1;
}
/* find size of input file */
if (fstat (fdin, &statbuf) < 0) {
perror("Fstat error");
return 1;
}
/* mmap the input file */
if ((src = mmap(0, statbuf.st_size, PROT_READ, MAP_SHARED, fdin, 0))
== (caddr_t) - 1) {
perror("mmap error for input");
return 1;
}
/* read header */
size_t compressed_size, decompressed_size;
LDM_read_header(src, &compressed_size, &decompressed_size);
printf("Size, compressed_size, decompressed_size: %zu %zu %zu\n",
statbuf.st_size, compressed_size, decompressed_size);
/* go to the location corresponding to the last byte */
if (lseek(fdout, decompressed_size - 1, SEEK_SET) == -1) {
perror("lseek error");
return 1;
}
/* write a dummy byte at the last location */
if (write(fdout, "", 1) != 1) {
perror("write error");
return 1;
}
/* mmap the output file */
if ((dst = mmap(0, decompressed_size, PROT_READ | PROT_WRITE,
MAP_SHARED, fdout, 0)) == (caddr_t) - 1) {
perror("mmap error for output");
return 1;
}
/* Copy input file to output file */
// memcpy(dst, src, statbuf.st_size);
#ifdef ZSTD
size_t size_out = ZSTD_decompress(dst, decomrpessed_size,
src + LDM_HEADER_SIZE,
statbuf.st_size - LDM_HEADER_SIZE);
#else
size_t size_out = LDM_decompress(src + LDM_HEADER_SIZE, dst,
statbuf.st_size - LDM_HEADER_SIZE,
decompressed_size);
printf("Ret size out: %zu\n", size_out);
#endif
ftruncate(fdout, size_out);
close(fdin);
close(fdout);
return 0;
}
static int compare(FILE *fp0, FILE *fp1) {
int result = 0;
while (result == 0) {
char b0[1024];
char b1[1024];
const size_t r0 = fread(b0, 1, sizeof(b0), fp0);
const size_t r1 = fread(b1, 1, sizeof(b1), fp1);
result = (int)r0 - (int)r1;
if (0 == r0 || 0 == r1) {
break;
}
if (0 == result) {
result = memcmp(b0, b1, r0);
}
}
return result;
}
static void verify(const char *inpFilename, const char *decFilename) {
FILE *inpFp = fopen(inpFilename, "rb");
FILE *decFp = fopen(decFilename, "rb");
printf("verify : %s <-> %s\n", inpFilename, decFilename);
const int cmp = compare(inpFp, decFp);
if(0 == cmp) {
printf("verify : OK\n");
} else {
printf("verify : NG\n");
}
fclose(decFp);
fclose(inpFp);
}
int main(int argc, const char *argv[]) {
const char * const exeName = argv[0];
char inpFilename[256] = { 0 };
char ldmFilename[256] = { 0 };
char decFilename[256] = { 0 };
if (argc < 2) {
printf("Wrong arguments\n");
printf("Usage:\n");
printf("%s FILE\n", exeName);
return 1;
}
snprintf(inpFilename, 256, "%s", argv[1]);
snprintf(ldmFilename, 256, "%s.ldm", argv[1]);
snprintf(decFilename, 256, "%s.ldm.dec", argv[1]);
printf("inp = [%s]\n", inpFilename);
printf("ldm = [%s]\n", ldmFilename);
printf("dec = [%s]\n", decFilename);
struct timeval tv1, tv2;
/* compress */
{
gettimeofday(&tv1, NULL);
if (compress(inpFilename, ldmFilename)) {
printf("Compress error");
return 1;
}
gettimeofday(&tv2, NULL);
printf("Total time = %f seconds\n",
(double) (tv2.tv_usec - tv1.tv_usec) / 1000000 +
(double) (tv2.tv_sec - tv1.tv_sec));
}
/* decompress */
gettimeofday(&tv1, NULL);
if (decompress(ldmFilename, decFilename)) {
printf("Decompress error");
return 1;
}
gettimeofday(&tv2, NULL);
printf("Total time = %f seconds\n",
(double) (tv2.tv_usec - tv1.tv_usec) / 1000000 +
(double) (tv2.tv_sec - tv1.tv_sec));
/* verify */
verify(inpFilename, decFilename);
return 0;
}
#if 0
int main2(int argc, char *argv[]) {
char inpFilename[256] = { 0 };
char ldmFilename[256] = { 0 };
char decFilename[256] = { 0 };
if (argc < 2) {
printf("Please specify input filename\n");
return 0;
}
snprintf(inpFilename, 256, "%s", argv[1]);
snprintf(ldmFilename, 256, "%s.ldm", argv[1]);
snprintf(decFilename, 256, "%s.ldm.dec", argv[1]);
printf("inp = [%s]\n", inpFilename);
printf("ldm = [%s]\n", ldmFilename);
printf("dec = [%s]\n", decFilename);
/* compress */
{
FILE *inpFp = fopen(inpFilename, "rb");
FILE *outFp = fopen(ldmFilename, "wb");
size_t sizeIn = 0;
size_t sizeOut = 0;
size_t ret;
printf("compress : %s -> %s\n", inpFilename, ldmFilename);
ret = compress_file(inpFp, outFp, &sizeIn, &sizeOut);
if (ret) {
printf("compress : failed with code %zu\n", ret);
return ret;
}
printf("%s: %zu → %zu bytes, %.1f%%\n",
inpFilename, sizeIn, sizeOut,
(double)sizeOut / sizeIn * 100);
printf("compress : done\n");
fclose(outFp);
fclose(inpFp);
}
/* decompress */
{
FILE *inpFp = fopen(ldmFilename, "rb");
FILE *outFp = fopen(decFilename, "wb");
size_t ret;
printf("decompress : %s -> %s\n", ldmFilename, decFilename);
ret = decompress_file(inpFp, outFp);
if (ret) {
printf("decompress : failed with code %zu\n", ret);
return ret;
}
printf("decompress : done\n");
fclose(outFp);
fclose(inpFp);
}
/* verify */
{
FILE *inpFp = fopen(inpFilename, "rb");
FILE *decFp = fopen(decFilename, "rb");
printf("verify : %s <-> %s\n", inpFilename, decFilename);
const int cmp = compare(inpFp, decFp);
if(0 == cmp) {
printf("verify : OK\n");
} else {
printf("verify : NG\n");
}
fclose(decFp);
fclose(inpFp);
}
return 0;
}
#endif