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Reference count the KeyInfo object. Cache a copy of an appropriate KeyInfo

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for each index in the Index object, and reuse that one copy as much as possible.

FossilOrigin-Name: defd5205a7cc3543cdd18f906f568e943b8b3a2c
This commit is contained in:
drh
2013-11-06 19:59:23 +00:00
parent 93889d9335
commit 2ec2fb2269
16 changed files with 175 additions and 161 deletions
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src/pragma.c
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@@ -1680,9 +1680,8 @@ void sqlite3Pragma(
if( pIdx==0 ){
sqlite3OpenTable(pParse, i, iDb, pParent, OP_OpenRead);
}else{
KeyInfo *pKey = sqlite3IndexKeyinfo(pParse, pIdx);
sqlite3VdbeAddOp3(v, OP_OpenRead, i, pIdx->tnum, iDb);
sqlite3VdbeChangeP4(v, -1, (char*)pKey, P4_KEYINFO_HANDOFF);
sqlite3VdbeSetP4KeyInfo(pParse, pIdx);
}
}else{
k = 0;