mirrors/zstd
0
0
Fork 0
mirror of https://github.com/facebook/zstd.git synced 2024-12-15 16:06:48 +08:00
Code Issues Packages Projects Releases Wiki Activity

fixed bug with 3 or more succesive rep codes

Browse Source
This commit is contained in:
inikep 2016-02-29 12:33:08 +01:00
parent f414647c6b
commit f647d99d61
3 changed files with 30 additions and 48 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
lib/zstd_compress.c
View File

@ -1958,7 +1958,7 @@ static size_t ZSTD_compress_generic (ZSTD_CCtx* zc,
}
#if ZSTD_OPT_DEBUG >= 3
#if ZSTD_OPT_DEBUG == 3
ssPtr->realMatchSum += ssPtr->realSeqSum * ((zc->params.searchLength == 3) ? 3 : 4);
printf("avgMatchL=%.2f avgLitL=%.2f match=%.1f%% lit=%.1f%% reps=%d seq=%d priceFunc=%d\n", (float)ssPtr->realMatchSum/ssPtr->realSeqSum, (float)ssPtr->realLitSum/ssPtr->realSeqSum, 100.0*ssPtr->realMatchSum/(ssPtr->realMatchSum+ssPtr->realLitSum), 100.0*ssPtr->realLitSum/(ssPtr->realMatchSum+ssPtr->realLitSum), ssPtr->realRepSum, ssPtr->realSeqSum, ssPtr->priceFunc);
priceFunc++;

74
lib/zstd_opt.h
View File

@ -373,17 +373,13 @@ void ZSTD_COMPRESSBLOCK_OPT_GENERIC(ZSTD_CCtx* ctx,
litlen = opt[cur-1].litlen + 1;
if (cur > litlen) {
price = opt[cur - litlen].price + ZSTD_getLiteralPrice(seqStorePtr, litlen, inr-litlen);
ZSTD_LOG_TRY_PRICE("%d: TRY1 opt[%d].price=%d price=%d cur=%d litlen=%d\n", (int)(inr-base), cur - litlen, opt[cur - litlen].price, price, cur, litlen);
} else
price = ZSTD_getLiteralPrice(seqStorePtr, litlen, litstart);
} else {
litlen = 1;
price = opt[cur - 1].price + ZSTD_getLiteralPrice(seqStorePtr, litlen, inr-1);
ZSTD_LOG_TRY_PRICE("%d: TRY3 price=%d cur=%d litlen=%d litonly=%d\n", (int)(inr-base), price, cur, litlen, (int)ZSTD_getLiteralPrice(seqStorePtr, litlen, inr-1));
}
ZSTD_LOG_TRY_PRICE("%d: TRY4 price=%d opt[%d].price=%d\n", (int)(inr-base), price, cur, opt[cur].price);
if (cur > last_pos || price <= opt[cur].price) // || ((price == opt[cur].price) && (opt[cur-1].mlen == 1) && (cur != litlen)))
SET_PRICE(cur, 1, 0, litlen, price);
@ -392,33 +388,33 @@ void ZSTD_COMPRESSBLOCK_OPT_GENERIC(ZSTD_CCtx* ctx,
if (inr > ilimit) /* last match must start at a minimum distance of 8 from oend */
continue;
mlen = opt[cur].mlen;
mlen = opt[cur].mlen;
if (opt[cur-mlen].off) {
if (opt[cur].off) {
opt[cur].rep2 = opt[cur-mlen].rep;
opt[cur].rep = opt[cur-mlen].off;
ZSTD_LOG_PARSER("%d: COPYREP1 cur=%d mlen=%d rep=%d rep2=%d\n", (int)(inr-base), cur, mlen, opt[cur].rep, opt[cur].rep2);
} else {
if (cur!=mlen && opt[cur-mlen].litlen == 0) {
opt[cur].rep = opt[cur].off;
ZSTD_LOG_ENCODE("%d: COPYREP_OFF cur=%d mlen=%d rep=%d rep2=%d\n", (int)(inr-base), cur, mlen, opt[cur].rep, opt[cur].rep2);
} else {
if (cur!=mlen && opt[cur].litlen == 0) {
opt[cur].rep2 = opt[cur-mlen].rep;
opt[cur].rep = opt[cur-mlen].rep2;
ZSTD_LOG_PARSER("%d: COPYREP2 cur=%d mlen=%d rep=%d rep2=%d\n", (int)(inr-base), cur, mlen, opt[cur].rep, opt[cur].rep2);
ZSTD_LOG_ENCODE("%d: COPYREP_SWI cur=%d mlen=%d rep=%d rep2=%d\n", (int)(inr-base), cur, mlen, opt[cur].rep, opt[cur].rep2);
} else {
opt[cur].rep2 = opt[cur-mlen].rep2;
opt[cur].rep = opt[cur-mlen].rep;
ZSTD_LOG_PARSER("%d: COPYREP3 cur=%d mlen=%d rep=%d rep2=%d\n", (int)(inr-base), cur, mlen, opt[cur].rep, opt[cur].rep2);
} }
ZSTD_LOG_ENCODE("%d: COPYREP_NOR cur=%d mlen=%d rep=%d rep2=%d\n", (int)(inr-base), cur, mlen, opt[cur].rep, opt[cur].rep2);
} }
ZSTD_LOG_PARSER("%d: CURRENT price[%d/%d]=%d off=%d mlen=%d litlen=%d rep=%d rep2=%d\n", (int)(inr-base), cur, last_pos, opt[cur].price, opt[cur].off, opt[cur].mlen, opt[cur].litlen, opt[cur].rep, opt[cur].rep2);
ZSTD_LOG_PARSER("%d: CURRENT_NoExt price[%d/%d]=%d off=%d mlen=%d litlen=%d rep=%d rep2=%d\n", (int)(inr-base), cur, last_pos, opt[cur].price, opt[cur].off, opt[cur].mlen, opt[cur].litlen, opt[cur].rep, opt[cur].rep2);
best_mlen = 0;
if (!opt[cur].off && opt[cur].mlen != 1) {
if (opt[cur].mlen != 1) {
cur_rep = opt[cur].rep2;
ZSTD_LOG_PARSER("%d: try REP2 rep2=%u mlen=%u\n", (int)(inr-base), (U32)cur_rep, mlen);
ZSTD_LOG_PARSER("%d: tryNoExt REP2 rep2=%u mlen=%u\n", (int)(inr-base), (U32)cur_rep, mlen);
} else {
cur_rep = opt[cur].rep;
ZSTD_LOG_PARSER("%d: try REP1 rep=%u mlen=%u\n", (int)(inr-base), (U32)cur_rep, mlen);
ZSTD_LOG_PARSER("%d: tryNoExt REP1 rep=%u mlen=%u\n", (int)(inr-base), (U32)cur_rep, mlen);
}
if (MEM_readMINMATCH(inr) == MEM_readMINMATCH(inr - cur_rep)) { // check rep
@ -437,13 +433,11 @@ void ZSTD_COMPRESSBLOCK_OPT_GENERIC(ZSTD_CCtx* ctx,
litlen = opt[cur].litlen;
if (cur > litlen) {
price = opt[cur - litlen].price + ZSTD_GETPRICE(seqStorePtr, litlen, inr-litlen, 0, mlen);
ZSTD_LOG_TRY_PRICE("%d: TRY5 opt[%d].price=%d price=%d cur=%d litlen=%d\n", (int)(inr-base), cur - litlen, opt[cur - litlen].price, price, cur, litlen);
} else
price = ZSTD_GETPRICE(seqStorePtr, litlen, litstart, 0, mlen);
} else {
litlen = 0;
price = opt[cur].price + ZSTD_GETPRICE(seqStorePtr, 0, NULL, 0, mlen);
ZSTD_LOG_TRY_PRICE("%d: TRY7 price=%d cur=%d litlen=0 getprice=%d\n", (int)(inr-base), price, cur, (int)ZSTD_GETPRICE(seqStorePtr, 0, NULL, 0, mlen));
}
best_mlen = mlen;
@ -488,7 +482,6 @@ void ZSTD_COMPRESSBLOCK_OPT_GENERIC(ZSTD_CCtx* ctx,
}
ZSTD_LOG_PARSER("%d: Found2 mlen=%d best_mlen=%d off=%d price=%d litlen=%d\n", (int)(inr-base), mlen, best_mlen, matches[u].off, price, litlen);
ZSTD_LOG_TRY_PRICE("%d: TRY8 price=%d opt[%d].price=%d\n", (int)(inr-base), price, cur + mlen, opt[cur + mlen].price);
if (cur + mlen > last_pos || (price < opt[cur + mlen].price))
SET_PRICE(cur + mlen, mlen, matches[u].off, litlen, price);
@ -512,7 +505,6 @@ _storeSequence: /* cur, last_pos, best_mlen, best_off have to be set */
while (1) {
mlen = opt[cur].mlen;
ZSTD_LOG_PARSER("%d: cur=%d mlen=%d\n", (int)(ip-base), cur, mlen);
offset = opt[cur].off;
opt[cur].mlen = best_mlen;
opt[cur].off = best_off;
@ -557,7 +549,7 @@ _storeSequence: /* cur, last_pos, best_mlen, best_off have to be set */
ml2 = (U32)ZSTD_count(ip, ip-rep_1, iend);
if (offset == 0 || offset >= 8)
if (ml2 < mlen && ml2 < MINMATCHOPT) {
printf("%d: ERROR iend=%d mlen=%d offset=%d ml2=%d\n", (int)(ip - base), (int)(iend - ip), (int)mlen, (int)offset, (int)ml2); exit(0); }
printf("%d: ERROR_NoExt iend=%d mlen=%d offset=%d ml2=%d\n", (int)(ip - base), (int)(iend - ip), (int)mlen, (int)offset, (int)ml2); exit(0); }
if (ip < anchor) {
printf("%d: ERROR ip < anchor iend=%d mlen=%d offset=%d\n", (int)(ip - base), (int)(iend - ip), (int)mlen, (int)offset); exit(0); }
if (ip - offset < ctx->base) {
@ -718,17 +710,13 @@ void ZSTD_COMPRESSBLOCK_OPT_EXTDICT_GENERIC(ZSTD_CCtx* ctx,
litlen = opt[cur-1].litlen + 1;
if (cur > litlen) {
price = opt[cur - litlen].price + ZSTD_getLiteralPrice(seqStorePtr, litlen, inr-litlen);
ZSTD_LOG_TRY_PRICE("%d: TRY1 opt[%d].price=%d price=%d cur=%d litlen=%d\n", (int)(inr-base), cur - litlen, opt[cur - litlen].price, price, cur, litlen);
} else
price = ZSTD_getLiteralPrice(seqStorePtr, litlen, litstart);
} else {
litlen = 1;
price = opt[cur - 1].price + ZSTD_getLiteralPrice(seqStorePtr, litlen, inr-1);
ZSTD_LOG_TRY_PRICE("%d: TRY3 price=%d cur=%d litlen=%d litonly=%d\n", (int)(inr-base), price, cur, litlen, (int)ZSTD_getLiteralPrice(seqStorePtr, litlen, inr-1));
}
ZSTD_LOG_TRY_PRICE("%d: TRY4 price=%d opt[%d].price=%d\n", (int)(inr-base), price, cur, opt[cur].price);
if (cur > last_pos || price <= opt[cur].price) // || ((price == opt[cur].price) && (opt[cur-1].mlen == 1) && (cur != litlen)))
SET_PRICE(cur, 1, 0, litlen, price);
@ -737,33 +725,33 @@ void ZSTD_COMPRESSBLOCK_OPT_EXTDICT_GENERIC(ZSTD_CCtx* ctx,
if (inr > ilimit) // last match must start at a minimum distance of 8 from oend
continue;
mlen = opt[cur].mlen;
mlen = opt[cur].mlen;
if (opt[cur-mlen].off) {
if (opt[cur].off) {
opt[cur].rep2 = opt[cur-mlen].rep;
opt[cur].rep = opt[cur-mlen].off;
ZSTD_LOG_PARSER("%d: COPYREP1 cur=%d mlen=%d rep=%d rep2=%d\n", (int)(inr-base), cur, mlen, opt[cur].rep, opt[cur].rep2);
} else {
if (cur!=mlen && opt[cur-mlen].litlen == 0) {
opt[cur].rep = opt[cur].off;
ZSTD_LOG_ENCODE("%d: COPYREP_OFF cur=%d mlen=%d rep=%d rep2=%d\n", (int)(inr-base), cur, mlen, opt[cur].rep, opt[cur].rep2);
} else {
if (cur!=mlen && opt[cur].litlen == 0) {
opt[cur].rep2 = opt[cur-mlen].rep;
opt[cur].rep = opt[cur-mlen].rep2;
ZSTD_LOG_PARSER("%d: COPYREP2 cur=%d mlen=%d rep=%d rep2=%d\n", (int)(inr-base), cur, mlen, opt[cur].rep, opt[cur].rep2);
ZSTD_LOG_ENCODE("%d: COPYREP_SWI cur=%d mlen=%d rep=%d rep2=%d\n", (int)(inr-base), cur, mlen, opt[cur].rep, opt[cur].rep2);
} else {
opt[cur].rep2 = opt[cur-mlen].rep2;
opt[cur].rep = opt[cur-mlen].rep;
ZSTD_LOG_PARSER("%d: COPYREP3 cur=%d mlen=%d rep=%d rep2=%d\n", (int)(inr-base), cur, mlen, opt[cur].rep, opt[cur].rep2);
} }
ZSTD_LOG_ENCODE("%d: COPYREP_NOR cur=%d mlen=%d rep=%d rep2=%d\n", (int)(inr-base), cur, mlen, opt[cur].rep, opt[cur].rep2);
} }
ZSTD_LOG_PARSER("%d: CURRENT price[%d/%d]=%d off=%d mlen=%d litlen=%d rep=%d rep2=%d\n", (int)(inr-base), cur, last_pos, opt[cur].price, opt[cur].off, opt[cur].mlen, opt[cur].litlen, opt[cur].rep, opt[cur].rep2);
ZSTD_LOG_PARSER("%d: CURRENT_Ext price[%d/%d]=%d off=%d mlen=%d litlen=%d rep=%d rep2=%d\n", (int)(inr-base), cur, last_pos, opt[cur].price, opt[cur].off, opt[cur].mlen, opt[cur].litlen, opt[cur].rep, opt[cur].rep2);
best_mlen = 0;
if (!opt[cur].off && opt[cur].mlen != 1) {
if (opt[cur].mlen != 1) {
cur_rep = opt[cur].rep2;
ZSTD_LOG_PARSER("%d: try REP2 rep2=%u mlen=%u\n", (int)(inr-base), (U32)cur_rep, mlen);
ZSTD_LOG_PARSER("%d: tryExt REP2 rep2=%u mlen=%u\n", (int)(inr-base), (U32)cur_rep, mlen);
} else {
cur_rep = opt[cur].rep;
ZSTD_LOG_PARSER("%d: try REP1 rep=%u mlen=%u\n", (int)(inr-base), (U32)cur_rep, mlen);
ZSTD_LOG_PARSER("%d: tryExt REP1 rep=%u mlen=%u\n", (int)(inr-base), (U32)cur_rep, mlen);
}
const U32 repIndex = (U32)(current+cur - cur_rep);
@ -788,13 +776,11 @@ void ZSTD_COMPRESSBLOCK_OPT_EXTDICT_GENERIC(ZSTD_CCtx* ctx,
litlen = opt[cur].litlen;
if (cur > litlen) {
price = opt[cur - litlen].price + ZSTD_GETPRICE(seqStorePtr, litlen, inr-litlen, 0, mlen);
ZSTD_LOG_TRY_PRICE("%d: TRY5 opt[%d].price=%d price=%d cur=%d litlen=%d\n", (int)(inr-base), cur - litlen, opt[cur - litlen].price, price, cur, litlen);
} else
price = ZSTD_GETPRICE(seqStorePtr, litlen, litstart, 0, mlen);
} else {
litlen = 0;
price = opt[cur].price + ZSTD_GETPRICE(seqStorePtr, 0, NULL, 0, mlen);
ZSTD_LOG_TRY_PRICE("%d: TRY7 price=%d cur=%d litlen=0 getprice=%d\n", (int)(inr-base), price, cur, (int)ZSTD_GETPRICE(seqStorePtr, 0, NULL, 0, mlen));
}
best_mlen = mlen;
@ -840,7 +826,6 @@ void ZSTD_COMPRESSBLOCK_OPT_EXTDICT_GENERIC(ZSTD_CCtx* ctx,
}
ZSTD_LOG_PARSER("%d: Found2 mlen=%d best_mlen=%d off=%d price=%d litlen=%d\n", (int)(inr-base), mlen, best_mlen, matches[u].off, price, litlen);
ZSTD_LOG_TRY_PRICE("%d: TRY8 price=%d opt[%d].price=%d\n", (int)(inr-base), price, cur + mlen, opt[cur + mlen].price);
if (cur + mlen > last_pos || (price < opt[cur + mlen].price))
SET_PRICE(cur + mlen, mlen, matches[u].off, litlen, price);
@ -863,7 +848,6 @@ _storeSequence: // cur, last_pos, best_mlen, best_off have to be set
while (1) {
mlen = opt[cur].mlen;
ZSTD_LOG_PARSER("%d: cur=%d mlen=%d\n", (int)(ip-base), cur, mlen);
offset = opt[cur].off;
opt[cur].mlen = best_mlen;
opt[cur].off = best_off;
@ -907,8 +891,8 @@ _storeSequence: // cur, last_pos, best_mlen, best_off have to be set
ml2 = (U32)ZSTD_count(ip, ip-offset, iend);
else
ml2 = (U32)ZSTD_count(ip, ip-rep_1, iend);
if (ml2 < mlen && ml2 < MINMATCHOPT) {
printf("%d: ERROR iend=%d mlen=%d offset=%d ml2=%d\n", (int)(ip - base), (int)(iend - ip), (int)mlen, (int)offset, (int)ml2); exit(0); }
// if (ml2 < mlen && ml2 < MINMATCHOPT) {
// printf("%d: ERROR_Ext iend=%d mlen=%d offset=%d ml2=%d\n", (int)(ip - base), (int)(iend - ip), (int)mlen, (int)offset, (int)ml2); exit(0); }
if (ip < anchor) {
printf("%d: ERROR ip < anchor iend=%d mlen=%d offset=%d\n", (int)(ip - base), (int)(iend - ip), (int)mlen, (int)offset); exit(0); }
if (ip - offset < ctx->base) {

2
lib/zstd_opt_internal.h
View File

@ -49,11 +49,9 @@
#if defined(ZSTD_OPT_DEBUG) && ZSTD_OPT_DEBUG>=9
#define ZSTD_LOG_PARSER(...) printf(__VA_ARGS__)
#define ZSTD_LOG_ENCODE(...) printf(__VA_ARGS__)
#define ZSTD_LOG_TRY_PRICE(...) printf(__VA_ARGS__)
#else
#define ZSTD_LOG_PARSER(...)
#define ZSTD_LOG_ENCODE(...) // printf(__VA_ARGS__)
#define ZSTD_LOG_TRY_PRICE(...)
#endif