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Cache the sqlite3_context structure in the P4 operand of VDBE programs

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for faster SQL function dispatch.

FossilOrigin-Name: 2abc44eb3b9d489321baa50bc25e17dafbda3687
This commit is contained in:
drh
2015-06-26 18:16:52 +00:00
parent 68cdd0eda2
commit 9c7c913cd6
11 changed files with 179 additions and 106 deletions
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6
src/analyze.c
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@@ -943,7 +943,7 @@ static void callStatGet(Vdbe *v, int regStat4, int iParam, int regOut){
#else
UNUSED_PARAMETER( iParam );
#endif
sqlite3VdbeAddOp3(v, OP_Function, 0, regStat4, regOut);
sqlite3VdbeAddOp3(v, OP_Function0, 0, regStat4, regOut);
sqlite3VdbeChangeP4(v, -1, (char*)&statGetFuncdef, P4_FUNCDEF);
sqlite3VdbeChangeP5(v, 1 + IsStat34);
}
@@ -1098,7 +1098,7 @@ static void analyzeOneTable(
#endif
sqlite3VdbeAddOp2(v, OP_Integer, nCol, regStat4+1);
sqlite3VdbeAddOp2(v, OP_Integer, pIdx->nKeyCol, regStat4+2);
sqlite3VdbeAddOp3(v, OP_Function, 0, regStat4+1, regStat4);
sqlite3VdbeAddOp3(v, OP_Function0, 0, regStat4+1, regStat4);
sqlite3VdbeChangeP4(v, -1, (char*)&statInitFuncdef, P4_FUNCDEF);
sqlite3VdbeChangeP5(v, 2+IsStat34);
@@ -1194,7 +1194,7 @@ static void analyzeOneTable(
}
#endif
assert( regChng==(regStat4+1) );
sqlite3VdbeAddOp3(v, OP_Function, 1, regStat4, regTemp);
sqlite3VdbeAddOp3(v, OP_Function0, 1, regStat4, regTemp);
sqlite3VdbeChangeP4(v, -1, (char*)&statPushFuncdef, P4_FUNCDEF);
sqlite3VdbeChangeP5(v, 2+IsStat34);
sqlite3VdbeAddOp2(v, OP_Next, iIdxCur, addrNextRow); VdbeCoverage(v);