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Overview
| Comment: | Fix a problem in btree.c that could cause a crash following an OOM. Also various test script problems. |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | two-mappings |
| Files: | files | file ages | folders |
| SHA1: |
e8bcdf938eee2c307c24d60d0295e552 |
| User & Date: | dan 2013-03-29 18:52:56 |
Context
|
2013-03-29
| ||
| 19:38 | Further fixes for test scripts. (check-in: 23ffa4f9 user: dan tags: two-mappings) | |
| 18:52 | Fix a problem in btree.c that could cause a crash following an OOM. Also various test script problems. (check-in: e8bcdf93 user: dan tags: two-mappings) | |
| 11:24 | Avoid assuming the page-size is 4096 bytes in os_unix.c. (check-in: 3b7ec8d7 user: dan tags: two-mappings) | |
Changes
Changes to src/btree.c.
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for(pCsr=pBt->pCursor; pCsr && rc==SQLITE_OK; pCsr=pCsr->pNext){
if( pCsr->iPage>=0 ){
MemPage *pPg = pCsr->apPage[0];
if( pPg && pPg->pDbPage->flags & PGHDR_MMAP ){
MemPage *pNew = 0;
rc = getAndInitPage(pBt, pPg->pgno, &pNew, 0);
if( rc==SQLITE_OK && pCsr->iPage==0 ){
pCsr->info.pCell = pNew->aData + (pCsr->info.pCell - pPg->aData);
}
pCsr->apPage[0] = pNew;
releasePage(pPg);
if( rc!=SQLITE_OK ) return rc;
}
}
}
return rc;
}
|
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for(pCsr=pBt->pCursor; pCsr && rc==SQLITE_OK; pCsr=pCsr->pNext){
if( pCsr->iPage>=0 ){
MemPage *pPg = pCsr->apPage[0];
if( pPg && pPg->pDbPage->flags & PGHDR_MMAP ){
MemPage *pNew = 0;
rc = getAndInitPage(pBt, pPg->pgno, &pNew, 0);
if( rc==SQLITE_OK ){
if( pCsr->iPage==0 ){
pCsr->info.pCell = pNew->aData + (pCsr->info.pCell - pPg->aData);
}
pCsr->apPage[0] = pNew;
releasePage(pPg);
}
}
}
}
return rc;
}
|
Changes to src/os_unix.c.
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}
#if HAVE_MREMAP
/* If we have an mremap() call, resize the existing mapping. */
else{
unixMapping *pMap = &pFd->aMmap[0];
pNew = osMremap(
pMap->pMapRegion, pMap->mmapOrigsize, nMap, MREMAP_MAYMOVE
);
if( pNew==MAP_FAILED ){
return SQLITE_IOERR_MMAP;
}
pFd->aMmap[0].pMapRegion = pNew;
pFd->aMmap[0].mmapSize = nMap;
pFd->aMmap[0].mmapOrigsize = nMap;
}
|
| |
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}
#if HAVE_MREMAP
/* If we have an mremap() call, resize the existing mapping. */
else{
unixMapping *pMap = &pFd->aMmap[0];
pNew = osMremap(
pMap->pMapRegion, pMap->mmapOrigsize, nMap, MREMAP_MAYMOVE
);
if( pNew==MAP_FAILED ){
return SQLITE_IOERR_MMAP;
}
pFd->aMmap[0].pMapRegion = pNew;
pFd->aMmap[0].mmapSize = nMap;
pFd->aMmap[0].mmapOrigsize = nMap;
}
|
Changes to test/mallocH.test.
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EXPLAIN QUERY PLAN SELECT * FROM abc AS t2 WHERE rowid=1;
}
}
# Malloc failure during integrity_check pragma.
#
do_malloc_test mallocH-5 -sqlprep {
CREATE TABLE t1(a PRIMARY KEY, b UNIQUE);
CREATE TABLE t2(x,y);
INSERT INTO t1 VALUES(1,2);
INSERT INTO t2 SELECT * FROM t1;
} -sqlbody {
PRAGMA integrity_check;
}
finish_test
|
> |
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EXPLAIN QUERY PLAN SELECT * FROM abc AS t2 WHERE rowid=1;
}
}
# Malloc failure during integrity_check pragma.
#
do_malloc_test mallocH-5 -sqlprep {
PRAGMA mmap_limit = 0;
CREATE TABLE t1(a PRIMARY KEY, b UNIQUE);
CREATE TABLE t2(x,y);
INSERT INTO t1 VALUES(1,2);
INSERT INTO t2 SELECT * FROM t1;
} -sqlbody {
PRAGMA integrity_check;
}
finish_test
|
Changes to test/pagerfault.test.
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}
} -test {
faultsim_test_result {0 {}}
set contents [db eval {SELECT * FROM t1}]
if {$contents != "1 2"} { error "Bad database contents ($contents)" }
set sz [file size test.db]
if {$testrc!=0 && $sz!=1024*3 && $sz!=4096*3} {
error "Expected file size to be 3072 or 12288 bytes - actual size $sz bytes"
}
if {$testrc==0 && $sz!=4096*3} {
error "Expected file size to be 12288 bytes - actual size $sz bytes"
}
}
do_test pagerfault-27-pre {
faultsim_delete_and_reopen
db func a_string a_string
execsql {
|
| | | > | < > |
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}
} -test {
faultsim_test_result {0 {}}
set contents [db eval {SELECT * FROM t1}]
if {$contents != "1 2"} { error "Bad database contents ($contents)" }
set nPg [file_page_count test.db]
set pgsz [file_page_size test.db]
if {$testrc!=0 && ($nPg!=3 || ($pgsz!=1024 && $pgsz!=4096))} {
error "File should be 3 pages. Page size 1024 or 4096 bytes. Is $nPg/$pgsz."
}
if {$testrc==0 && ($nPg!=3 || $pgsz!=4096)} {
error "File should be 3 pages. Page size 4096 bytes. Is $nPg/$pgsz."
}
}
do_test pagerfault-27-pre {
faultsim_delete_and_reopen
db func a_string a_string
execsql {
|
Changes to test/tester.tcl.
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}
# Return the number of pages in the database file $zFile, according to
# the database header.
#
proc file_page_count {zFile} {
set nPg [hexio_get_int [hexio_read $zFile 28 4]]
return $nPg
}
# Return the page size of database file $zFile, according to the database
# header.
#
proc file_page_size {zFile} {
|
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}
# Return the number of pages in the database file $zFile, according to
# the database header.
#
proc file_page_count {zFile} {
set nPg [hexio_get_int [hexio_read $zFile 28 4]]
set pgsz [file_page_size $zFile]
set filesz [file size $zFile]
set syspgsz 4096
# Check that the file size is consistent with the database page size,
# the page count, and the system page size.
if {($filesz < ($nPg * $pgsz))
|| ($filesz > (((($nPg * $pgsz)+$syspgsz-1) / $syspgsz) * $syspgsz))
} {
error "file_size=$filesz. page_count=$nPg. page_size=$pgsz."
}
return $nPg
}
# Return the page size of database file $zFile, according to the database
# header.
#
proc file_page_size {zFile} {
|