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Overview
| Comment: | Rearrange the code inside sqlite3RunParser() routine so that sqlite3Parser() is only called from a single place. This allows sqlite3Parser() to be in-lined, which results in a 0.25% overall performance gain. |
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| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: |
25d1d02b3ea126ade22b2a72649ae555 |
| User & Date: | drh 2016-08-10 14:40:00 |
Context
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2016-08-10
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| 15:02 | Tweaks to pcache1TruncateUnsafe() to make it slightly smaller and faster and easier to test. check-in: 059f4e2e user: drh tags: trunk | |
| 14:40 | Rearrange the code inside sqlite3RunParser() routine so that sqlite3Parser() is only called from a single place. This allows sqlite3Parser() to be in-lined, which results in a 0.25% overall performance gain. check-in: 25d1d02b user: drh tags: trunk | |
| 13:34 | Increment the version number to 3.15. check-in: 8c2701e7 user: drh tags: trunk | |
Changes
Changes to src/tokenize.c.
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return SQLITE_NOMEM_BKPT;
}
assert( pParse->pNewTable==0 );
assert( pParse->pNewTrigger==0 );
assert( pParse->nVar==0 );
assert( pParse->nzVar==0 );
assert( pParse->azVar==0 );
while( zSql[i]!=0 ){
assert( i>=0 );
pParse->sLastToken.z = &zSql[i];
pParse->sLastToken.n = sqlite3GetToken((unsigned char*)&zSql[i],&tokenType);
i += pParse->sLastToken.n;
if( i>mxSqlLen ){
pParse->rc = SQLITE_TOOBIG;
break;
}
if( tokenType>=TK_SPACE ){
assert( tokenType==TK_SPACE || tokenType==TK_ILLEGAL );
if( db->u1.isInterrupted ){
pParse->rc = SQLITE_INTERRUPT;
break;
}
................................................................................
sqlite3Parser(pEngine, tokenType, pParse->sLastToken, pParse);
lastTokenParsed = tokenType;
if( pParse->rc!=SQLITE_OK || db->mallocFailed ) break;
}
}
assert( nErr==0 );
pParse->zTail = &zSql[i];
if( pParse->rc==SQLITE_OK && db->mallocFailed==0 ){
assert( zSql[i]==0 );
if( lastTokenParsed!=TK_SEMI ){
sqlite3Parser(pEngine, TK_SEMI, pParse->sLastToken, pParse);
}
if( pParse->rc==SQLITE_OK && db->mallocFailed==0 ){
sqlite3Parser(pEngine, 0, pParse->sLastToken, pParse);
}
}
#ifdef YYTRACKMAXSTACKDEPTH
sqlite3_mutex_enter(sqlite3MallocMutex());
sqlite3StatusHighwater(SQLITE_STATUS_PARSER_STACK,
sqlite3ParserStackPeak(pEngine)
);
sqlite3_mutex_leave(sqlite3MallocMutex());
#endif /* YYDEBUG */
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return SQLITE_NOMEM_BKPT;
}
assert( pParse->pNewTable==0 );
assert( pParse->pNewTrigger==0 );
assert( pParse->nVar==0 );
assert( pParse->nzVar==0 );
assert( pParse->azVar==0 );
while( 1 ){
assert( i>=0 );
if( zSql[i]!=0 ){
pParse->sLastToken.z = &zSql[i];
pParse->sLastToken.n = sqlite3GetToken((u8*)&zSql[i],&tokenType);
i += pParse->sLastToken.n;
if( i>mxSqlLen ){
pParse->rc = SQLITE_TOOBIG;
break;
}
}else{
/* Upon reaching the end of input, call the parser two more times
** with tokens TK_SEMI and 0, in that order. */
if( lastTokenParsed==TK_SEMI ){
tokenType = 0;
}else if( lastTokenParsed==0 ){
break;
}else{
tokenType = TK_SEMI;
}
}
if( tokenType>=TK_SPACE ){
assert( tokenType==TK_SPACE || tokenType==TK_ILLEGAL );
if( db->u1.isInterrupted ){
pParse->rc = SQLITE_INTERRUPT;
break;
}
................................................................................
sqlite3Parser(pEngine, tokenType, pParse->sLastToken, pParse);
lastTokenParsed = tokenType;
if( pParse->rc!=SQLITE_OK || db->mallocFailed ) break;
}
}
assert( nErr==0 );
pParse->zTail = &zSql[i];
#ifdef YYTRACKMAXSTACKDEPTH
sqlite3_mutex_enter(sqlite3MallocMutex());
sqlite3StatusHighwater(SQLITE_STATUS_PARSER_STACK,
sqlite3ParserStackPeak(pEngine)
);
sqlite3_mutex_leave(sqlite3MallocMutex());
#endif /* YYDEBUG */
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