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Changes to sqlite3ScratchMalloc() that make the entire memory allocation

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interface a little faster and about 100 bytes smaller.

FossilOrigin-Name: f83daa16f65ef35062412e88c214852a4aeb3da2
This commit is contained in:
drh
2014-08-23 19:04:55 +00:00
parent 9de4a17185
commit 3ccd5bf89e
3 changed files with 13 additions and 15 deletions
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12
manifest
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@@ -1,5 +1,5 @@
C Make\sthe\simplementation\sof\sthe\ssqlite3_aggregate_context()\sinterface\sfaster\nfor\ssecond\san\ssubsequent\sinvocations.\s\sThis\shelps\sall\saggregate\sfunctions\sto\nperform\sbetter.
D 2014-08-23T18:17:19.059
C Changes\sto\ssqlite3ScratchMalloc()\sthat\smake\sthe\sentire\smemory\sallocation\ninterface\sa\slittle\sfaster\sand\sabout\s100\sbytes\ssmaller.
D 2014-08-23T19:04:55.170
F Makefile.arm-wince-mingw32ce-gcc d6df77f1f48d690bd73162294bbba7f59507c72f
F Makefile.in 5eb79e334a5de69c87740edd56af6527dd219308
F Makefile.linux-gcc 91d710bdc4998cb015f39edf3cb314ec4f4d7e23
@@ -191,7 +191,7 @@ F src/legacy.c 87c92f4a08e2f70220e3b22a9c3b2482d36a134a
F src/lempar.c cdf0a000315332fc9b50b62f3b5e22e080a0952b
F src/loadext.c 31c2122b7dd05a179049bbf163fd4839f181cbab
F src/main.c 900dd06e41d22795cbb23ab0240397f1e2901bf7
F src/malloc.c 0a88a97fc5ae621ca9659d38b080e0b9ddbb80ad
F src/malloc.c 7f26fcedc42b93bb49c4c12a77aa0d891182392e
F src/mem0.c 6a55ebe57c46ca1a7d98da93aaa07f99f1059645
F src/mem1.c c0c990fcaddff810ea277b4fb5d9138603dd5d4b
F src/mem2.c dce31758da87ec2cfa52ba4c5df1aed6e07d8e8f
@@ -1188,7 +1188,7 @@ F tool/vdbe_profile.tcl 67746953071a9f8f2f668b73fe899074e2c6d8c1
F tool/warnings-clang.sh f6aa929dc20ef1f856af04a730772f59283631d4
F tool/warnings.sh 0abfd78ceb09b7f7c27c688c8e3fe93268a13b32
F tool/win/sqlite.vsix deb315d026cc8400325c5863eef847784a219a2f
P 0c0a603950c97837442d82886f947aab0acbd805
R d4bdc3de1168bf2d862dde32e02d949b
P 802148f3110462eac939d53ce08eb9a2f6aac739
R f2effcc85284cd0fae163c222d4987e9
U drh
Z 5d66d6e81701eb9b183824f31680ac42
Z d2f180c60ae7591aa14ffa4ab8835b4a

2
manifest.uuid
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@@ -1 +1 @@
802148f3110462eac939d53ce08eb9a2f6aac739
f83daa16f65ef35062412e88c214852a4aeb3da2

14
src/malloc.c
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@@ -352,22 +352,20 @@ void *sqlite3ScratchMalloc(int n){
assert( n>0 );
sqlite3_mutex_enter(mem0.mutex);
sqlite3StatusSet(SQLITE_STATUS_SCRATCH_SIZE, n);
if( mem0.nScratchFree && sqlite3GlobalConfig.szScratch>=n ){
p = mem0.pScratchFree;
mem0.pScratchFree = mem0.pScratchFree->pNext;
mem0.nScratchFree--;
sqlite3StatusAdd(SQLITE_STATUS_SCRATCH_USED, 1);
sqlite3StatusSet(SQLITE_STATUS_SCRATCH_SIZE, n);
sqlite3_mutex_leave(mem0.mutex);
}else{
if( sqlite3GlobalConfig.bMemstat ){
sqlite3StatusSet(SQLITE_STATUS_SCRATCH_SIZE, n);
n = mallocWithAlarm(n, &p);
if( p ) sqlite3StatusAdd(SQLITE_STATUS_SCRATCH_OVERFLOW, n);
sqlite3_mutex_leave(mem0.mutex);
}else{
sqlite3_mutex_leave(mem0.mutex);
p = sqlite3GlobalConfig.m.xMalloc(n);
p = sqlite3Malloc(n);
if( sqlite3GlobalConfig.bMemstat && p ){
sqlite3_mutex_enter(mem0.mutex);
sqlite3StatusAdd(SQLITE_STATUS_SCRATCH_OVERFLOW, sqlite3MallocSize(p));
sqlite3_mutex_leave(mem0.mutex);
}
sqlite3MemdebugSetType(p, MEMTYPE_SCRATCH);
}