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Overview
| Comment: | Fix a bug in the new checkpoint computation. Also update the checkpoint algorithm in the test scripts to align with the new implementation. |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: |
8b6056f2ee596f31b157a792fac05d11 |
| User & Date: | drh 2010-05-19 19:09:38 |
Context
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2010-05-19
| ||
| 19:26 | Add the SQLITE_FCNTL_SIZE_HINT operator to sqlite3_file_control() and use it to give the VFS hints about the ultimate size of a database file when the file is growing. check-in: 2b7e3b4a user: drh tags: trunk | |
| 19:09 | Fix a bug in the new checkpoint computation. Also update the checkpoint algorithm in the test scripts to align with the new implementation. check-in: 8b6056f2 user: drh tags: trunk | |
| 18:08 | Revise the checksumming algorithm in wal.c. More variable refactoring. check-in: 542b90eb user: drh tags: trunk | |
Changes
Changes to src/wal.c.
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u32 s2 = aCksum[1];
u8 *aEnd = (u8*)&a[nByte];
assert( nByte>=8 );
assert( (nByte&0x00000003)==0 );
do {
s1 += (a[0]<<24) + (a[2]<<16) + (a[2]<<8) + a[3] + s2;
s2 += (a[3]<<24) + (a[5]<<16) + (a[6]<<8) + a[7] + s1;
a += 8;
}while( a<aEnd );
aCksum[0] = s1;
aCksum[1] = s2;
}
/*
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| | |
278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 |
u32 s2 = aCksum[1];
u8 *aEnd = (u8*)&a[nByte];
assert( nByte>=8 );
assert( (nByte&0x00000003)==0 );
do {
s1 += (a[0]<<24) + (a[1]<<16) + (a[2]<<8) + a[3] + s2;
s2 += (a[4]<<24) + (a[5]<<16) + (a[6]<<8) + a[7] + s1;
a += 8;
}while( a<aEnd );
aCksum[0] = s1;
aCksum[1] = s2;
}
/*
|
Changes to test/wal.test.
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set blob
}
proc logcksum {ckv1 ckv2 blob} {
upvar $ckv1 c1
upvar $ckv2 c2
binary scan $blob i* values
foreach v $values {
set v [expr {$v & 0xFFFFFFFF}]
incr c1 $v
incr c2 $c1
}
set c1 [expr ($c1 + ($c1>>24))&0xFFFFFFFF]
set c2 [expr ($c2 + ($c2>>24))&0xFFFFFFFF]
}
file copy -force test.db testX.db
foreach {tn pgsz works} {
1 128 0
2 256 0
3 512 1
................................................................................
4 1024 1
5 2048 1
6 4096 1
7 8192 1
8 16384 1
9 32768 1
10 65536 0
11 1020 0
} {
if {$::SQLITE_MAX_PAGE_SIZE < $pgsz} {
set works 0
}
for {set pg 1} {$pg <= 3} {incr pg} {
................................................................................
} {16384}
integrity_check wal-20.5
catch { db2 close }
catch { db close }
finish_test
|
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set blob
}
proc logcksum {ckv1 ckv2 blob} {
upvar $ckv1 c1
upvar $ckv2 c2
binary scan $blob I* values
foreach {v1 v2} $values {
set c1 [expr {($c1 + $v1 + $c2)&0xFFFFFFFF}]
set c2 [expr {($c2 + $v2 + $c1)&0xFFFFFFFF}]
}
}
file copy -force test.db testX.db
foreach {tn pgsz works} {
1 128 0
2 256 0
3 512 1
................................................................................
4 1024 1
5 2048 1
6 4096 1
7 8192 1
8 16384 1
9 32768 1
10 65536 0
11 1016 0
} {
if {$::SQLITE_MAX_PAGE_SIZE < $pgsz} {
set works 0
}
for {set pg 1} {$pg <= 3} {incr pg} {
................................................................................
} {16384}
integrity_check wal-20.5
catch { db2 close }
catch { db close }
finish_test
|