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Small performance improvement in sqltie3WalFindFrame().

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FossilOrigin-Name: 52013cad0e6ce2d694f25e2984a76d438cef724f0e07c8bb9d3dce8a3caf4350
This commit is contained in:
drh 2018-02-21 01:05:37 +00:00
parent 4f4e49a98b
commit 8d3e15eec4
3 changed files with 9 additions and 8 deletions
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manifest
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@ -1,5 +1,5 @@
C Remove\san\sunnecessary\smemset().
D 2018-02-21T00:48:02.760
C Small\sperformance\simprovement\sin\ssqltie3WalFindFrame().
D 2018-02-21T01:05:37.077
F .fossil-settings/empty-dirs dbb81e8fc0401ac46a1491ab34a7f2c7c0452f2f06b54ebb845d024ca8283ef1
F .fossil-settings/ignore-glob 35175cdfcf539b2318cb04a9901442804be81cd677d8b889fcc9149c21f239ea
F Makefile.in a2d2fb8d17c39ab5ec52beb27850b903949080848236923f436156b72a958737
@ -568,7 +568,7 @@ F src/vdbesort.c 731a09e5cb9e96b70c394c1b7cf3860fbe84acca7682e178615eb941a3a0ef2
F src/vdbetrace.c 48e11ebe040c6b41d146abed2602e3d00d621d7ebe4eb29b0a0f1617fd3c2f6c
F src/vtab.c 0e4885495172e1bdf54b12cce23b395ac74ef5729031f15e1bc1e3e6b360ed1a
F src/vxworks.h d2988f4e5a61a4dfe82c6524dd3d6e4f2ce3cdb9
F src/wal.c fff06582a9611cd472fe67ba2b37da1ba052b48a41e3ee60ad55e87faf724c75
F src/wal.c 634908f6bc2b5147c1a4218381393fc5f19cfc16bef2d9fa8029c2a7f31b73ae
F src/wal.h 8de5d2d3de0956d6f6cb48c83a4012d5f227b8fe940f3a349a4b7e85ebcb492a
F src/walker.c da987a20d40145c0a03c07d8fefcb2ed363becc7680d0500d9c79915591f5b1f
F src/where.c 7cae47e813393d70c6d327fdf000fcb30f76b1b0b5a5b52ff6402e0c658de32c
@ -1707,7 +1707,7 @@ F vsixtest/vsixtest.tcl 6a9a6ab600c25a91a7acc6293828957a386a8a93
F vsixtest/vsixtest.vcxproj.data 2ed517e100c66dc455b492e1a33350c1b20fbcdc
F vsixtest/vsixtest.vcxproj.filters 37e51ffedcdb064aad6ff33b6148725226cd608e
F vsixtest/vsixtest_TemporaryKey.pfx e5b1b036facdb453873e7084e1cae9102ccc67a0
P e2b107141cd97bd4ab240748a9ce43fc2ec950ea74610697a4a7a3d7a6441e6b
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U drh
Z 888a0e04ef92ada18bb625445f9ec36e
Z ba266545389d418145bdf93b79a10d36

2
manifest.uuid
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@ -1 +1 @@
e7b7f5884a78630c6ba6a217c36247397e62f1928d4b480df929efcfc4a01893
52013cad0e6ce2d694f25e2984a76d438cef724f0e07c8bb9d3dce8a3caf4350

3
src/wal.c
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@ -2882,7 +2882,7 @@ int sqlite3WalFindFrame(
** table after the current read-transaction had started.
*/
iMinHash = walFramePage(pWal->minFrame);
for(iHash=walFramePage(iLast); iHash>=iMinHash && iRead==0; iHash--){
for(iHash=walFramePage(iLast); iHash>=iMinHash; iHash--){
volatile ht_slot *aHash; /* Pointer to hash table */
volatile u32 *aPgno; /* Pointer to array of page numbers */
u32 iZero; /* Frame number corresponding to aPgno[0] */
@ -2905,6 +2905,7 @@ int sqlite3WalFindFrame(
return SQLITE_CORRUPT_BKPT;
}
}
if( iRead ) break;
}
#ifdef SQLITE_ENABLE_EXPENSIVE_ASSERT