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Save a few bytes and a few cycles by setting Vdbe.expmask to zero for

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statements prepared using legacy interface sqlite3_prepare().

FossilOrigin-Name: a8fd705258643863493476f8b42ee981608a339f
This commit is contained in:
dan 2017-02-23 16:30:16 +00:00
parent 24d772cc27
commit bda4cb876c
4 changed files with 17 additions and 14 deletions
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14
manifest
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@ -1,5 +1,5 @@
C Move\sa\sbranch\scondition\sin\sanalyze.c\sinside\san\s#ifdef\sSQLITE_ENABLE_STAT4\sblock.
D 2017-02-22T19:41:16.947
C Save\sa\sfew\sbytes\sand\sa\sfew\scycles\sby\ssetting\sVdbe.expmask\sto\szero\sfor\nstatements\sprepared\susing\slegacy\sinterface\ssqlite3_prepare().
D 2017-02-23T16:30:16.521
F Makefile.in edb6bcdd37748d2b1c3422ff727c748df7ffe918
F Makefile.linux-gcc 7bc79876b875010e8c8f9502eb935ca92aa3c434
F Makefile.msc a89ea37ab5928026001569f056973b9059492fe2
@ -465,8 +465,8 @@ F src/vacuum.c 1fe4555cd8c9b263afb85b5b4ee3a4a4181ad569
F src/vdbe.c 83f387d9e6842b1dc99f6e85bb577c5bbc4e397d
F src/vdbe.h 59998ffd71d7caa8886bc78dafaf8caeccd4c13c
F src/vdbeInt.h 4e4b15b2e1330e1636e4e01974eab2b0b985092f
F src/vdbeapi.c 3e4a8893feeb78620f4aac4ac5b85d92255b97e1
F src/vdbeaux.c 2f48204a0f2875b098ee046bba9265907297b0b5
F src/vdbeapi.c 70aabe108c411e529a59d8800445513965334062
F src/vdbeaux.c 031422c66e272c7f1027070e7f0858f4c418dfbc
F src/vdbeblob.c 359891617358deefc85bef7bcf787fa6b77facb9
F src/vdbemem.c 3b5a9a5b375458d3e12a50ae1aaa41eeec2175fd
F src/vdbesort.c eda25cb2d1727efca6f7862fea32b8aa33c0face
@ -1557,7 +1557,7 @@ F vsixtest/vsixtest.tcl 6a9a6ab600c25a91a7acc6293828957a386a8a93
F vsixtest/vsixtest.vcxproj.data 2ed517e100c66dc455b492e1a33350c1b20fbcdc
F vsixtest/vsixtest.vcxproj.filters 37e51ffedcdb064aad6ff33b6148725226cd608e
F vsixtest/vsixtest_TemporaryKey.pfx e5b1b036facdb453873e7084e1cae9102ccc67a0
P 737a82444065752785c643b1d29ca097c828effb
R 36d1036d6c004868a4b3899253e892b2
P d6afd98de3ee8b714dfd6477ead955096f623972
R d82d78a185c578681c4bad1233af7bd3
U dan
Z b9298378d570f055da46d519ad41197c
Z 013ae364526d4d7cd1569b7a9709f5c0

2
manifest.uuid
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@ -1 +1 @@
d6afd98de3ee8b714dfd6477ead955096f623972
a8fd705258643863493476f8b42ee981608a339f

14
src/vdbeapi.c
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@ -154,7 +154,8 @@ int sqlite3_clear_bindings(sqlite3_stmt *pStmt){
sqlite3VdbeMemRelease(&p->aVar[i]);
p->aVar[i].flags = MEM_Null;
}
if( p->isPrepareV2 && p->expmask ){
assert( p->isPrepareV2 || p->expmask==0 );
if( p->expmask ){
p->expired = 1;
}
sqlite3_mutex_leave(mutex);
@ -1258,9 +1259,8 @@ static int vdbeUnbind(Vdbe *p, int i){
** as if there had been a schema change, on the first sqlite3_step() call
** following any change to the bindings of that parameter.
*/
if( p->isPrepareV2 &&
((i<32 && p->expmask & ((u32)1 << i)) || p->expmask==0xffffffff)
){
assert( p->isPrepareV2 || p->expmask==0 );
if( p->expmask & ((u32)1 << (i&0x001F)) && (i<32 || p->expmask==0xffffffff) ){
p->expired = 1;
}
return SQLITE_OK;
@ -1523,10 +1523,12 @@ int sqlite3_transfer_bindings(sqlite3_stmt *pFromStmt, sqlite3_stmt *pToStmt){
if( pFrom->nVar!=pTo->nVar ){
return SQLITE_ERROR;
}
if( pTo->isPrepareV2 && pTo->expmask ){
assert( pTo->isPrepareV2 || pTo->expmask==0 );
if( pTo->expmask ){
pTo->expired = 1;
}
if( pFrom->isPrepareV2 && pFrom->expmask ){
assert( pFrom->isPrepareV2 || pFrom->expmask==0 );
if( pFrom->expmask ){
pFrom->expired = 1;
}
return sqlite3TransferBindings(pFromStmt, pToStmt);

1
src/vdbeaux.c
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@ -57,6 +57,7 @@ void sqlite3VdbeError(Vdbe *p, const char *zFormat, ...){
void sqlite3VdbeSetSql(Vdbe *p, const char *z, int n, int isPrepareV2){
assert( isPrepareV2==1 || isPrepareV2==0 );
if( p==0 ) return;
if( !isPrepareV2 ) p->expmask = 0;
#if defined(SQLITE_OMIT_TRACE) && !defined(SQLITE_ENABLE_SQLLOG)
if( !isPrepareV2 ) return;
#endif