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Reinstate the releaseMemArray() performance optimization of

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[bb520293d8c11518] with corrections.

FossilOrigin-Name: 1291080d118c678072289a2e57a56b73657e9256ae47eafa7853716c8d47392f
This commit is contained in:
drh 2022-03-02 13:45:22 +00:00
parent e3994f2975
commit 5308d3931e
3 changed files with 20 additions and 11 deletions
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13
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@ -1,5 +1,5 @@
C The\soptimization\sat\s[ece326db50201937]\sis\snot\squite\sright,\sso\sback\sit\sout\nfor\snow.
D 2022-03-02T11:39:11.573
C Reinstate\sthe\sreleaseMemArray()\sperformance\soptimization\sof\n[bb520293d8c11518]\swith\scorrections.
D 2022-03-02T13:45:22.786
F .fossil-settings/empty-dirs dbb81e8fc0401ac46a1491ab34a7f2c7c0452f2f06b54ebb845d024ca8283ef1
F .fossil-settings/ignore-glob 35175cdfcf539b2318cb04a9901442804be81cd677d8b889fcc9149c21f239ea
F LICENSE.md df5091916dbb40e6e9686186587125e1b2ff51f022cc334e886c19a0e9982724
@ -628,7 +628,7 @@ F src/vdbe.c 4b969ebe6b61f87a90aebf817bc6ebda5075fe56987591091a9bf22556262484
F src/vdbe.h a1d0e3b934e835e73edd146f2e7c4eadb711b5c9875c18159a57483fd78e550e
F src/vdbeInt.h 958066f0448930dac697a7d1fc345d1b5fd1bb2d93685860967b94c901a7b244
F src/vdbeapi.c 1c80efbe51118bbecc7279023e75d18edcfa4b3dc441287e1718ee70ad594f58
F src/vdbeaux.c ab8c90419e78021b70b3a76a02b6f6dcc8f80d4208f065e916066968909020bf
F src/vdbeaux.c 219aef2bb6dc46f6ede76de18e7c388c30bd359ec094e178c362e1b412c56213
F src/vdbeblob.c 5e61ce31aca17db8fb60395407457a8c1c7fb471dde405e0cd675974611dcfcd
F src/vdbemem.c 7737f0b1c480a32b057849c804d2f21d5389649bb8be80f77ad75df700adc9a1
F src/vdbesort.c 43756031ca7430f7aec3ef904824a7883c4ede783e51f280d99b9b65c0796e35
@ -1944,9 +1944,8 @@ F vsixtest/vsixtest.tcl 6a9a6ab600c25a91a7acc6293828957a386a8a93
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# Remove this line to create a well-formed Fossil manifest.

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@ -1 +1 @@
b218a4b9fe44ffc5cb8d2a2491a5aad217d37b26ccc6b04caf8f28b71bcfe809
1291080d118c678072289a2e57a56b73657e9256ae47eafa7853716c8d47392f

16
src/vdbeaux.c
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@ -1866,7 +1866,12 @@ static void initMemArray(Mem *p, int N, sqlite3 *db, u16 flags){
}
/*
** Release an array of N Mem elements
** Release auxiliary memory held in an array of N Mem elements.
**
** After this routine returns, all Mem elements in the array will still
** be valid. Those Mem elements that were not holding auxiliary resources
** will be unchanged. Mem elements which had something freed will be
** set to MEM_Undefined.
*/
static void releaseMemArray(Mem *p, int N){
if( p && N ){
@ -1899,12 +1904,17 @@ static void releaseMemArray(Mem *p, int N){
if( p->flags&(MEM_Agg|MEM_Dyn) ){
testcase( (p->flags & MEM_Dyn)!=0 && p->xDel==sqlite3VdbeFrameMemDel );
sqlite3VdbeMemRelease(p);
p->flags = MEM_Undefined;
}else if( p->szMalloc ){
sqlite3DbFreeNN(db, p->zMalloc);
p->szMalloc = 0;
p->flags = MEM_Undefined;
}
p->flags = MEM_Undefined;
#ifdef SQLITE_DEBUG
else{
p->flags = MEM_Undefined;
}
#endif
}while( (++p)<pEnd );
}
}