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Performance optimizations in the VDBE and especially to the OP_Next and

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related opcodes and in the sqlite3BtreeNext() and sqlite3BtreePrevious()
routines.  This is a cherrypick of [6f99b54aedeb], [d2efea1682a7], and
[d78c5d89de4b].

FossilOrigin-Name: 7f72fc4f47445a2c01910b268335873de9f75059
This commit is contained in:
drh
2013-08-20 03:13:51 +00:00
parent f66f26a311
commit 9b47ee3f09
7 changed files with 91 additions and 56 deletions
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15
src/vdbeapi.c
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@@ -211,12 +211,14 @@ void sqlite3_result_double(sqlite3_context *pCtx, double rVal){
void sqlite3_result_error(sqlite3_context *pCtx, const char *z, int n){
assert( sqlite3_mutex_held(pCtx->s.db->mutex) );
pCtx->isError = SQLITE_ERROR;
pCtx->fErrorOrAux = 1;
sqlite3VdbeMemSetStr(&pCtx->s, z, n, SQLITE_UTF8, SQLITE_TRANSIENT);
}
#ifndef SQLITE_OMIT_UTF16
void sqlite3_result_error16(sqlite3_context *pCtx, const void *z, int n){
assert( sqlite3_mutex_held(pCtx->s.db->mutex) );
pCtx->isError = SQLITE_ERROR;
pCtx->fErrorOrAux = 1;
sqlite3VdbeMemSetStr(&pCtx->s, z, n, SQLITE_UTF16NATIVE, SQLITE_TRANSIENT);
}
#endif
@@ -280,6 +282,7 @@ void sqlite3_result_zeroblob(sqlite3_context *pCtx, int n){
}
void sqlite3_result_error_code(sqlite3_context *pCtx, int errCode){
pCtx->isError = errCode;
pCtx->fErrorOrAux = 1;
if( pCtx->s.flags & MEM_Null ){
sqlite3VdbeMemSetStr(&pCtx->s, sqlite3ErrStr(errCode), -1,
SQLITE_UTF8, SQLITE_STATIC);
@@ -290,6 +293,7 @@ void sqlite3_result_error_code(sqlite3_context *pCtx, int errCode){
void sqlite3_result_error_toobig(sqlite3_context *pCtx){
assert( sqlite3_mutex_held(pCtx->s.db->mutex) );
pCtx->isError = SQLITE_TOOBIG;
pCtx->fErrorOrAux = 1;
sqlite3VdbeMemSetStr(&pCtx->s, "string or blob too big", -1,
SQLITE_UTF8, SQLITE_STATIC);
}
@@ -299,6 +303,7 @@ void sqlite3_result_error_nomem(sqlite3_context *pCtx){
assert( sqlite3_mutex_held(pCtx->s.db->mutex) );
sqlite3VdbeMemSetNull(&pCtx->s);
pCtx->isError = SQLITE_NOMEM;
pCtx->fErrorOrAux = 1;
pCtx->s.db->mallocFailed = 1;
}
@@ -621,6 +626,10 @@ void sqlite3_set_auxdata(
pAuxData->iArg = iArg;
pAuxData->pNext = pVdbe->pAuxData;
pVdbe->pAuxData = pAuxData;
if( pCtx->fErrorOrAux==0 ){
pCtx->isError = 0;
pCtx->fErrorOrAux = 1;
}
}else if( pAuxData->xDelete ){
pAuxData->xDelete(pAuxData->pAux);
}
@@ -1289,7 +1298,7 @@ sqlite3_stmt *sqlite3_next_stmt(sqlite3 *pDb, sqlite3_stmt *pStmt){
*/
int sqlite3_stmt_status(sqlite3_stmt *pStmt, int op, int resetFlag){
Vdbe *pVdbe = (Vdbe*)pStmt;
int v = pVdbe->aCounter[op-1];
if( resetFlag ) pVdbe->aCounter[op-1] = 0;
return v;
u32 v = pVdbe->aCounter[op];
if( resetFlag ) pVdbe->aCounter[op] = 0;
return (int)v;
}