Improve performance of fts5 low level iterators.
FossilOrigin-Name: bc5118f40a11f64ffb4e1c086277fa80b9764745
diff --git a/ext/fts5/fts5_index.c b/ext/fts5/fts5_index.c
index ef67308..2488cd7 100644
--- a/ext/fts5/fts5_index.c
+++ b/ext/fts5/fts5_index.c
@@ -433,6 +433,9 @@
Fts5Data *pNextLeaf; /* Leaf page (iLeafPgno+1) */
int iLeafOffset; /* Byte offset within current leaf */
+ /* Next method */
+ void (*xNext)(Fts5Index*, Fts5SegIter*, int*);
+
/* The page and offset from which the current term was read. The offset
** is the offset of the first rowid in the current doclist. */
int iTermLeafPgno;
@@ -453,7 +456,6 @@
i64 iRowid; /* Current rowid */
int nPos; /* Number of bytes in current position list */
u8 bDel; /* True if the delete flag is set */
- // u8 bContent; /* True if has content (detail=none mode) */
};
/*
@@ -1575,6 +1577,20 @@
fts5SegIterLoadRowid(p, pIter);
}
+static void fts5SegIterNext(Fts5Index*, Fts5SegIter*, int*);
+static void fts5SegIterNext_Reverse(Fts5Index*, Fts5SegIter*, int*);
+static void fts5SegIterNext_None(Fts5Index*, Fts5SegIter*, int*);
+
+static void fts5SegIterSetNext(Fts5Index *p, Fts5SegIter *pIter){
+ if( pIter->flags & FTS5_SEGITER_REVERSE ){
+ pIter->xNext = fts5SegIterNext_Reverse;
+ }else if( p->pConfig->eDetail==FTS5_DETAIL_NONE ){
+ pIter->xNext = fts5SegIterNext_None;
+ }else{
+ pIter->xNext = fts5SegIterNext;
+ }
+}
+
/*
** Initialize the iterator object pIter to iterate through the entries in
** segment pSeg. The iterator is left pointing to the first entry when
@@ -1600,6 +1616,7 @@
if( p->rc==SQLITE_OK ){
memset(pIter, 0, sizeof(*pIter));
+ fts5SegIterSetNext(p, pIter);
pIter->pSeg = pSeg;
pIter->iLeafPgno = pSeg->pgnoFirst-1;
fts5SegIterNextPage(p, pIter);
@@ -1741,6 +1758,110 @@
}
/*
+** Advance iterator pIter to the next entry.
+**
+** This version of fts5SegIterNext() is only used by reverse iterators.
+*/
+static void fts5SegIterNext_Reverse(
+ Fts5Index *p, /* FTS5 backend object */
+ Fts5SegIter *pIter, /* Iterator to advance */
+ int *pbNewTerm /* OUT: Set for new term */
+){
+ assert( pIter->flags & FTS5_SEGITER_REVERSE );
+ assert( pIter->pNextLeaf==0 );
+ if( pIter->iRowidOffset>0 ){
+ u8 *a = pIter->pLeaf->p;
+ int iOff;
+ int nPos;
+ int bDummy;
+ i64 iDelta;
+
+ pIter->iRowidOffset--;
+ pIter->iLeafOffset = pIter->aRowidOffset[pIter->iRowidOffset];
+ fts5SegIterLoadNPos(p, pIter);
+ iOff = pIter->iLeafOffset;
+ if( p->pConfig->eDetail!=FTS5_DETAIL_NONE ){
+ iOff += pIter->nPos;
+ }
+ fts5GetVarint(&a[iOff], (u64*)&iDelta);
+ pIter->iRowid -= iDelta;
+ }else{
+ fts5SegIterReverseNewPage(p, pIter);
+ }
+}
+
+/*
+** Advance iterator pIter to the next entry.
+**
+** This version of fts5SegIterNext() is only used if detail=none and the
+** iterator is not a reverse direction iterator.
+*/
+static void fts5SegIterNext_None(
+ Fts5Index *p, /* FTS5 backend object */
+ Fts5SegIter *pIter, /* Iterator to advance */
+ int *pbNewTerm /* OUT: Set for new term */
+){
+ int iOff;
+
+ assert( p->rc==SQLITE_OK );
+ assert( (pIter->flags & FTS5_SEGITER_REVERSE)==0 );
+ assert( p->pConfig->eDetail==FTS5_DETAIL_NONE );
+
+ ASSERT_SZLEAF_OK(pIter->pLeaf);
+ iOff = pIter->iLeafOffset;
+
+ /* Next entry is on the next page */
+ if( pIter->pSeg && iOff>=pIter->pLeaf->szLeaf ){
+ fts5SegIterNextPage(p, pIter);
+ if( p->rc || pIter->pLeaf==0 ) return;
+ pIter->iRowid = 0;
+ iOff = 4;
+ }
+
+ if( iOff<pIter->iEndofDoclist ){
+ /* Next entry is on the current page */
+ i64 iDelta;
+ iOff += sqlite3Fts5GetVarint(&pIter->pLeaf->p[iOff], &iDelta);
+ pIter->iLeafOffset = iOff;
+ pIter->iRowid += iDelta;
+ }else if( (pIter->flags & FTS5_SEGITER_ONETERM)==0 ){
+ if( pIter->pSeg ){
+ int nKeep = 0;
+ if( iOff!=fts5LeafFirstTermOff(pIter->pLeaf) ){
+ iOff += fts5GetVarint32(&pIter->pLeaf->p[iOff], nKeep);
+ }
+ pIter->iLeafOffset = iOff;
+ fts5SegIterLoadTerm(p, pIter, nKeep);
+ }else{
+ const u8 *pList = 0;
+ const char *zTerm = 0;
+ int nList;
+ sqlite3Fts5HashScanNext(p->pHash);
+ sqlite3Fts5HashScanEntry(p->pHash, &zTerm, &pList, &nList);
+ if( pList==0 ) goto next_none_eof;
+ pIter->pLeaf->p = (u8*)pList;
+ pIter->pLeaf->nn = nList;
+ pIter->pLeaf->szLeaf = nList;
+ pIter->iEndofDoclist = nList;
+ sqlite3Fts5BufferSet(&p->rc,&pIter->term, (int)strlen(zTerm), (u8*)zTerm);
+ pIter->iLeafOffset = fts5GetVarint(pList, (u64*)&pIter->iRowid);
+ }
+
+ if( pbNewTerm ) *pbNewTerm = 1;
+ }else{
+ goto next_none_eof;
+ }
+
+ fts5SegIterLoadNPos(p, pIter);
+
+ return;
+ next_none_eof:
+ fts5DataRelease(pIter->pLeaf);
+ pIter->pLeaf = 0;
+}
+
+
+/*
** Advance iterator pIter to the next entry.
**
** If an error occurs, Fts5Index.rc is set to an appropriate error code. It
@@ -1752,151 +1873,119 @@
Fts5SegIter *pIter, /* Iterator to advance */
int *pbNewTerm /* OUT: Set for new term */
){
- assert( pbNewTerm==0 || *pbNewTerm==0 );
- if( p->rc==SQLITE_OK ){
- if( pIter->flags & FTS5_SEGITER_REVERSE ){
- assert( pIter->pNextLeaf==0 );
- if( pIter->iRowidOffset>0 ){
- u8 *a = pIter->pLeaf->p;
- int iOff;
- int nPos;
- int bDummy;
- i64 iDelta;
+ Fts5Data *pLeaf = pIter->pLeaf;
+ int iOff;
+ int bNewTerm = 0;
+ int nKeep = 0;
- pIter->iRowidOffset--;
- pIter->iLeafOffset = pIter->aRowidOffset[pIter->iRowidOffset];
- fts5SegIterLoadNPos(p, pIter);
- iOff = pIter->iLeafOffset;
- if( p->pConfig->eDetail!=FTS5_DETAIL_NONE ){
- iOff += pIter->nPos;
- }
- fts5GetVarint(&a[iOff], (u64*)&iDelta);
- pIter->iRowid -= iDelta;
- }else{
- fts5SegIterReverseNewPage(p, pIter);
+ assert( pbNewTerm==0 || *pbNewTerm==0 );
+ assert( p->pConfig->eDetail!=FTS5_DETAIL_NONE );
+
+ /* Search for the end of the position list within the current page. */
+ u8 *a = pLeaf->p;
+ int n = pLeaf->szLeaf;
+
+ ASSERT_SZLEAF_OK(pLeaf);
+ iOff = pIter->iLeafOffset + pIter->nPos;
+
+ if( iOff<n ){
+ /* The next entry is on the current page. */
+ assert_nc( iOff<=pIter->iEndofDoclist );
+ if( iOff>=pIter->iEndofDoclist ){
+ bNewTerm = 1;
+ if( iOff!=fts5LeafFirstTermOff(pLeaf) ){
+ iOff += fts5GetVarint32(&a[iOff], nKeep);
}
}else{
- Fts5Data *pLeaf = pIter->pLeaf;
- int iOff;
- int bNewTerm = 0;
- int nKeep = 0;
+ u64 iDelta;
+ iOff += sqlite3Fts5GetVarint(&a[iOff], &iDelta);
+ pIter->iRowid += iDelta;
+ assert_nc( iDelta>0 );
+ }
+ pIter->iLeafOffset = iOff;
- /* Search for the end of the position list within the current page. */
- u8 *a = pLeaf->p;
- int n = pLeaf->szLeaf;
-
+ }else if( pIter->pSeg==0 ){
+ const u8 *pList = 0;
+ const char *zTerm = 0;
+ int nList = 0;
+ assert( (pIter->flags & FTS5_SEGITER_ONETERM) || pbNewTerm );
+ if( 0==(pIter->flags & FTS5_SEGITER_ONETERM) ){
+ sqlite3Fts5HashScanNext(p->pHash);
+ sqlite3Fts5HashScanEntry(p->pHash, &zTerm, &pList, &nList);
+ }
+ if( pList==0 ){
+ fts5DataRelease(pIter->pLeaf);
+ pIter->pLeaf = 0;
+ }else{
+ pIter->pLeaf->p = (u8*)pList;
+ pIter->pLeaf->nn = nList;
+ pIter->pLeaf->szLeaf = nList;
+ pIter->iEndofDoclist = nList+1;
+ sqlite3Fts5BufferSet(&p->rc, &pIter->term, (int)strlen(zTerm),
+ (u8*)zTerm);
+ pIter->iLeafOffset = fts5GetVarint(pList, (u64*)&pIter->iRowid);
+ *pbNewTerm = 1;
+ }
+ }else{
+ iOff = 0;
+ /* Next entry is not on the current page */
+ while( iOff==0 ){
+ fts5SegIterNextPage(p, pIter);
+ pLeaf = pIter->pLeaf;
+ if( pLeaf==0 ) break;
ASSERT_SZLEAF_OK(pLeaf);
- if( p->pConfig->eDetail==FTS5_DETAIL_NONE ){
- iOff = pIter->iLeafOffset;
- }else{
- iOff = pIter->iLeafOffset + pIter->nPos;
- }
-
- if( iOff<n ){
- /* The next entry is on the current page. */
- assert_nc( iOff<=pIter->iEndofDoclist );
- if( iOff>=pIter->iEndofDoclist ){
- bNewTerm = 1;
- if( iOff!=fts5LeafFirstTermOff(pLeaf) ){
- iOff += fts5GetVarint32(&a[iOff], nKeep);
- }
- }else{
- u64 iDelta;
- iOff += sqlite3Fts5GetVarint(&a[iOff], &iDelta);
- pIter->iRowid += iDelta;
- assert_nc( iDelta>0 );
- }
+ if( (iOff = fts5LeafFirstRowidOff(pLeaf)) && iOff<pLeaf->szLeaf ){
+ iOff += sqlite3Fts5GetVarint(&pLeaf->p[iOff], (u64*)&pIter->iRowid);
pIter->iLeafOffset = iOff;
- }else if( pIter->pSeg==0 ){
- const u8 *pList = 0;
- const char *zTerm = 0;
- int nList = 0;
- assert( (pIter->flags & FTS5_SEGITER_ONETERM) || pbNewTerm );
- if( 0==(pIter->flags & FTS5_SEGITER_ONETERM) ){
- sqlite3Fts5HashScanNext(p->pHash);
- sqlite3Fts5HashScanEntry(p->pHash, &zTerm, &pList, &nList);
- }
- if( pList==0 ){
- fts5DataRelease(pIter->pLeaf);
- pIter->pLeaf = 0;
- }else{
- pIter->pLeaf->p = (u8*)pList;
- pIter->pLeaf->nn = nList;
- pIter->pLeaf->szLeaf = nList;
- pIter->iEndofDoclist = nList+1;
- sqlite3Fts5BufferSet(&p->rc, &pIter->term, (int)strlen(zTerm),
- (u8*)zTerm);
- pIter->iLeafOffset = fts5GetVarint(pList, (u64*)&pIter->iRowid);
- *pbNewTerm = 1;
- }
- }else{
- iOff = 0;
- /* Next entry is not on the current page */
- while( iOff==0 ){
- fts5SegIterNextPage(p, pIter);
- pLeaf = pIter->pLeaf;
- if( pLeaf==0 ) break;
- ASSERT_SZLEAF_OK(pLeaf);
- if( (iOff = fts5LeafFirstRowidOff(pLeaf)) && iOff<pLeaf->szLeaf ){
- iOff += sqlite3Fts5GetVarint(&pLeaf->p[iOff], (u64*)&pIter->iRowid);
- pIter->iLeafOffset = iOff;
-
- if( pLeaf->nn>pLeaf->szLeaf ){
- pIter->iPgidxOff = pLeaf->szLeaf + fts5GetVarint32(
- &pLeaf->p[pLeaf->szLeaf], pIter->iEndofDoclist
+ if( pLeaf->nn>pLeaf->szLeaf ){
+ pIter->iPgidxOff = pLeaf->szLeaf + fts5GetVarint32(
+ &pLeaf->p[pLeaf->szLeaf], pIter->iEndofDoclist
);
- }
+ }
- }
- else if( pLeaf->nn>pLeaf->szLeaf ){
- pIter->iPgidxOff = pLeaf->szLeaf + fts5GetVarint32(
- &pLeaf->p[pLeaf->szLeaf], iOff
+ }
+ else if( pLeaf->nn>pLeaf->szLeaf ){
+ pIter->iPgidxOff = pLeaf->szLeaf + fts5GetVarint32(
+ &pLeaf->p[pLeaf->szLeaf], iOff
);
- pIter->iLeafOffset = iOff;
- pIter->iEndofDoclist = iOff;
- bNewTerm = 1;
- }
- assert_nc( iOff<pLeaf->szLeaf
- || p->pConfig->eDetail==FTS5_DETAIL_NONE
- );
- if( iOff>pLeaf->szLeaf ){
- p->rc = FTS5_CORRUPT;
- return;
- }
- }
+ pIter->iLeafOffset = iOff;
+ pIter->iEndofDoclist = iOff;
+ bNewTerm = 1;
}
+ assert_nc( iOff<pLeaf->szLeaf );
+ if( iOff>pLeaf->szLeaf ){
+ p->rc = FTS5_CORRUPT;
+ return;
+ }
+ }
+ }
- /* Check if the iterator is now at EOF. If so, return early. */
- if( pIter->pLeaf ){
- if( bNewTerm ){
- if( pIter->flags & FTS5_SEGITER_ONETERM ){
- fts5DataRelease(pIter->pLeaf);
- pIter->pLeaf = 0;
- }else{
- fts5SegIterLoadTerm(p, pIter, nKeep);
- fts5SegIterLoadNPos(p, pIter);
- if( pbNewTerm ) *pbNewTerm = 1;
- }
- }else{
- /* The following could be done by calling fts5SegIterLoadNPos(). But
- ** this block is particularly performance critical, so equivalent
- ** code is inlined.
- **
- ** Later: Switched back to fts5SegIterLoadNPos() because it supports
- ** detail=none mode. Not ideal.
- */
-#if 0
- int nSz;
- assert( p->rc==SQLITE_OK );
- fts5FastGetVarint32(pIter->pLeaf->p, pIter->iLeafOffset, nSz);
- pIter->bDel = (nSz & 0x0001);
- pIter->nPos = nSz>>1;
- assert_nc( pIter->nPos>=0 );
-#endif
- fts5SegIterLoadNPos(p, pIter);
- }
+ /* Check if the iterator is now at EOF. If so, return early. */
+ if( pIter->pLeaf ){
+ if( bNewTerm ){
+ if( pIter->flags & FTS5_SEGITER_ONETERM ){
+ fts5DataRelease(pIter->pLeaf);
+ pIter->pLeaf = 0;
+ }else{
+ fts5SegIterLoadTerm(p, pIter, nKeep);
+ fts5SegIterLoadNPos(p, pIter);
+ if( pbNewTerm ) *pbNewTerm = 1;
}
+ }else{
+ /* The following could be done by calling fts5SegIterLoadNPos(). But
+ ** this block is particularly performance critical, so equivalent
+ ** code is inlined.
+ **
+ ** Later: Switched back to fts5SegIterLoadNPos() because it supports
+ ** detail=none mode. Not ideal.
+ */
+ int nSz;
+ assert( p->rc==SQLITE_OK );
+ fts5FastGetVarint32(pIter->pLeaf->p, pIter->iLeafOffset, nSz);
+ pIter->bDel = (nSz & 0x0001);
+ pIter->nPos = nSz>>1;
+ assert_nc( pIter->nPos>=0 );
}
}
}
@@ -2231,6 +2320,8 @@
}
}
+ fts5SegIterSetNext(p, pIter);
+
/* Either:
**
** 1) an error has occurred, or
@@ -2288,7 +2379,7 @@
pLeaf->nn = pLeaf->szLeaf = nList;
pIter->pLeaf = pLeaf;
pIter->iLeafOffset = fts5GetVarint(pLeaf->p, (u64*)&pIter->iRowid);
- pIter->iEndofDoclist = pLeaf->nn+1;
+ pIter->iEndofDoclist = pLeaf->nn;
if( flags & FTS5INDEX_QUERY_DESC ){
pIter->flags |= FTS5_SEGITER_REVERSE;
@@ -2297,6 +2388,8 @@
fts5SegIterLoadNPos(p, pIter);
}
}
+
+ fts5SegIterSetNext(p, pIter);
}
/*
@@ -2540,7 +2633,7 @@
}
do{
- if( bMove ) fts5SegIterNext(p, pIter, 0);
+ if( bMove && p->rc==SQLITE_OK ) pIter->xNext(p, pIter, 0);
if( pIter->pLeaf==0 ) break;
if( bRev==0 && pIter->iRowid>=iMatch ) break;
if( bRev!=0 && pIter->iRowid<=iMatch ) break;
@@ -2574,7 +2667,9 @@
for(i=(pIter->nSeg+iChanged)/2; i>=iMinset && p->rc==SQLITE_OK; i=i/2){
int iEq;
if( (iEq = fts5MultiIterDoCompare(pIter, i)) ){
- fts5SegIterNext(p, &pIter->aSeg[iEq], 0);
+ Fts5SegIter *pSeg = &pIter->aSeg[iEq];
+ assert( p->rc==SQLITE_OK );
+ pSeg->xNext(p, pSeg, 0);
i = pIter->nSeg + iEq;
}
}
@@ -2661,7 +2756,7 @@
if( bUseFrom && pSeg->pDlidx ){
fts5SegIterNextFrom(p, pSeg, iFrom);
}else{
- fts5SegIterNext(p, pSeg, &bNewTerm);
+ pSeg->xNext(p, pSeg, &bNewTerm);
}
if( pSeg->pLeaf==0 || bNewTerm
@@ -2689,7 +2784,8 @@
Fts5SegIter *pSeg = &pIter->aSeg[iFirst];
int bNewTerm = 0;
- fts5SegIterNext(p, pSeg, &bNewTerm);
+ assert( p->rc==SQLITE_OK );
+ pSeg->xNext(p, pSeg, &bNewTerm);
if( pSeg->pLeaf==0 || bNewTerm
|| fts5MultiIterAdvanceRowid(p, pIter, iFirst)
){
@@ -2809,7 +2905,8 @@
for(iIter=pNew->nSeg-1; iIter>0; iIter--){
int iEq;
if( (iEq = fts5MultiIterDoCompare(pNew, iIter)) ){
- fts5SegIterNext(p, &pNew->aSeg[iEq], 0);
+ Fts5SegIter *pSeg = &pNew->aSeg[iEq];
+ if( p->rc==SQLITE_OK ) pSeg->xNext(p, pSeg, 0);
fts5MultiIterAdvanced(p, pNew, iEq, iIter);
}
}
@@ -2859,6 +2956,7 @@
}else{
pNew->bEof = 1;
}
+ fts5SegIterSetNext(p, pIter);
*ppOut = pNew;
}
diff --git a/ext/fts5/test/fts5ad.test b/ext/fts5/test/fts5ad.test
index b875354..c6b09d8 100644
--- a/ext/fts5/test/fts5ad.test
+++ b/ext/fts5/test/fts5ad.test
@@ -24,8 +24,6 @@
foreach_detail_mode $testprefix {
-if {[detail_is_none]==0} continue
-
do_execsql_test 1.0 {
CREATE VIRTUAL TABLE yy USING fts5(x, y, detail=%DETAIL%);
INSERT INTO yy VALUES('Changes the result to be', 'the list of all matching');
diff --git a/manifest b/manifest
index 5a74996..bd43186 100644
--- a/manifest
+++ b/manifest
@@ -1,5 +1,5 @@
-C Merge\strunk\swith\sthis\sbranch.
-D 2016-01-11T18:30:34.152
+C Improve\sperformance\sof\sfts5\slow\slevel\siterators.
+D 2016-01-12T19:28:51.507
F Makefile.in 7c8cc4c2f0179efc6fa9492141d1fb65f4807054
F Makefile.linux-gcc 7bc79876b875010e8c8f9502eb935ca92aa3c434
F Makefile.msc e45d8b9b56dfa3f2cd860b2c28bd9d304513b042
@@ -103,7 +103,7 @@
F ext/fts5/fts5_config.c b0ed7b0ddd785fb4d4e6f9037d357f8aa95918e6
F ext/fts5/fts5_expr.c 6eba2220747ea1b20a358fb3b34b2ab78323e285
F ext/fts5/fts5_hash.c 1b113977296cf4212c6ec667d5e3f2bd18036955
-F ext/fts5/fts5_index.c 04fe098ffab66d9424ba4e7c0b88ce7c98748cb1
+F ext/fts5/fts5_index.c 5ab044a67919e2c9f42f0288a39778136154511e
F ext/fts5/fts5_main.c 03bd44e4bd0ba16213ca9259ad5df1d4d743fd7e
F ext/fts5/fts5_storage.c f7b2d330dd7b29a9f4da09f6d85879ca8c41b2e8
F ext/fts5/fts5_tcl.c 18e9382d8cdad4c05b49559c68494968b9b4a4fb
@@ -118,7 +118,7 @@
F ext/fts5/test/fts5aa.test 7e814df4a0e6c22a6fe2d84f210fdc0b5068a084
F ext/fts5/test/fts5ab.test 30325a89453280160106be411bba3acf138e6d1b
F ext/fts5/test/fts5ac.test d5073ca7bd2d9fe8aab0c82c6c75a7e4b0d70ced
-F ext/fts5/test/fts5ad.test 049f7511a79c155d2d8dfd2ddcfeb640c50ad0dc
+F ext/fts5/test/fts5ad.test 0ddaa5b692ff220100ee396228838f4331399eaa
F ext/fts5/test/fts5ae.test 612dcb51f4069226791ff14c17dbfb3138c56f20
F ext/fts5/test/fts5af.test be858a96b1f5de66ba6d64f0021bd8b2408e126c
F ext/fts5/test/fts5ag.test 27180de76c03036be75ee80b93d8c5f540014071
@@ -1412,7 +1412,7 @@
F tool/warnings-clang.sh f6aa929dc20ef1f856af04a730772f59283631d4
F tool/warnings.sh 48bd54594752d5be3337f12c72f28d2080cb630b
F tool/win/sqlite.vsix deb315d026cc8400325c5863eef847784a219a2f
-P 2c0b93553ebb00a70c611eb8dac021877933f088 ecc98bef43c2fd07d64e4efddf340929a875ebac
-R fac95fe8d4249da246cad11b14ac9297
+P a73d245f2e523a57163bc93d9fb6a74c4cdf21e7
+R 1ce1920656146c835e2df297e09b2c78
U dan
-Z 0acdab0d7c32bec7117a883df7ebebf7
+Z 25b8dbc71e1c6971b424b6f8a3c7183e
diff --git a/manifest.uuid b/manifest.uuid
index 0ab6f5f..0aaeafe 100644
--- a/manifest.uuid
+++ b/manifest.uuid
@@ -1 +1 @@
-a73d245f2e523a57163bc93d9fb6a74c4cdf21e7
\ No newline at end of file
+bc5118f40a11f64ffb4e1c086277fa80b9764745
\ No newline at end of file
