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Overview
| Comment: | Avoid deleting a b-tree "has-content" vector belonging to another shared-cache connection from within sqlite3_close(). |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | shared-cache-fixes |
| Files: | files | file ages | folders |
| SHA1: | 93462df78247f5634b9f53752cf80056 |
| User & Date: | dan 2013-05-14 20:36:31 |
Context
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2013-05-14
| ||
| 23:13 | Merge together the fork in this branch. check-in: 164e3d4d user: drh tags: shared-cache-fixes | |
| 20:36 | Avoid deleting a b-tree "has-content" vector belonging to another shared-cache connection from within sqlite3_close(). check-in: 93462df7 user: dan tags: shared-cache-fixes | |
|
2013-05-13
| ||
| 18:23 | Candidate fixes for problems revealed by notify2.test. Notify2.test is still failing at this point. check-in: ea0428f9 user: dan tags: shared-cache-fixes | |
Changes
Changes to src/btree.c.
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static void btreeEndTransaction(Btree *p){
BtShared *pBt = p->pBt;
assert( sqlite3BtreeHoldsMutex(p) );
#ifndef SQLITE_OMIT_AUTOVACUUM
pBt->bDoTruncate = 0;
#endif
btreeClearHasContent(pBt);
if( p->inTrans>TRANS_NONE && p->db->activeVdbeCnt>1 ){
/* If there are other active statements that belong to this database
** handle, downgrade to a read-only transaction. The other statements
** may still be reading from the database. */
downgradeAllSharedCacheTableLocks(p);
p->inTrans = TRANS_READ;
}else{
................................................................................
assert( pBt->nTransaction>0 );
rc = sqlite3PagerCommitPhaseTwo(pBt->pPager);
if( rc!=SQLITE_OK && bCleanup==0 ){
sqlite3BtreeLeave(p);
return rc;
}
pBt->inTransaction = TRANS_READ;
}
btreeEndTransaction(p);
sqlite3BtreeLeave(p);
return SQLITE_OK;
}
................................................................................
if( nPage==0 ) sqlite3PagerPagecount(pBt->pPager, &nPage);
testcase( pBt->nPage!=nPage );
pBt->nPage = nPage;
releasePage(pPage1);
}
assert( countWriteCursors(pBt)==0 );
pBt->inTransaction = TRANS_READ;
}
btreeEndTransaction(p);
sqlite3BtreeLeave(p);
return rc;
}
|
< > > |
3251 3252 3253 3254 3255 3256 3257 3258 3259 3260 3261 3262 3263 3264 .... 3325 3326 3327 3328 3329 3330 3331 3332 3333 3334 3335 3336 3337 3338 3339 .... 3449 3450 3451 3452 3453 3454 3455 3456 3457 3458 3459 3460 3461 3462 3463 |
static void btreeEndTransaction(Btree *p){
BtShared *pBt = p->pBt;
assert( sqlite3BtreeHoldsMutex(p) );
#ifndef SQLITE_OMIT_AUTOVACUUM
pBt->bDoTruncate = 0;
#endif
if( p->inTrans>TRANS_NONE && p->db->activeVdbeCnt>1 ){
/* If there are other active statements that belong to this database
** handle, downgrade to a read-only transaction. The other statements
** may still be reading from the database. */
downgradeAllSharedCacheTableLocks(p);
p->inTrans = TRANS_READ;
}else{
................................................................................
assert( pBt->nTransaction>0 );
rc = sqlite3PagerCommitPhaseTwo(pBt->pPager);
if( rc!=SQLITE_OK && bCleanup==0 ){
sqlite3BtreeLeave(p);
return rc;
}
pBt->inTransaction = TRANS_READ;
btreeClearHasContent(pBt);
}
btreeEndTransaction(p);
sqlite3BtreeLeave(p);
return SQLITE_OK;
}
................................................................................
if( nPage==0 ) sqlite3PagerPagecount(pBt->pPager, &nPage);
testcase( pBt->nPage!=nPage );
pBt->nPage = nPage;
releasePage(pPage1);
}
assert( countWriteCursors(pBt)==0 );
pBt->inTransaction = TRANS_READ;
btreeClearHasContent(pBt);
}
btreeEndTransaction(p);
sqlite3BtreeLeave(p);
return rc;
}
|
Changes to test/sharedA.test.
12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 |
# Test some specific circumstances to do with shared cache mode.
#
set testdir [file dirname $argv0]
source $testdir/tester.tcl
db close
set ::testprefix x
set ::enable_shared_cache [sqlite3_enable_shared_cache 1]
#-------------------------------------------------------------------------
#
do_test 1.1 {
sqlite3 db1 test.db
sqlite3 db2 test.db
db2 eval {
|
| > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > |
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# Test some specific circumstances to do with shared cache mode. # set testdir [file dirname $argv0] source $testdir/tester.tcl db close set ::testprefix sharedA set ::enable_shared_cache [sqlite3_enable_shared_cache 1] #------------------------------------------------------------------------- # do_test 0.1 { sqlite3 db1 test.db sqlite3 db2 test.db db1 eval { CREATE TABLE t1(x); INSERT INTO t1 VALUES(randomblob(100)); INSERT INTO t1 SELECT randomblob(100) FROM t1; INSERT INTO t1 SELECT randomblob(100) FROM t1; INSERT INTO t1 SELECT randomblob(100) FROM t1; INSERT INTO t1 SELECT randomblob(100) FROM t1; INSERT INTO t1 SELECT randomblob(100) FROM t1; INSERT INTO t1 SELECT randomblob(100) FROM t1; CREATE INDEX i1 ON t1(x); } db1 eval { BEGIN; DROP INDEX i1; } db2 close db1 eval { INSERT INTO t1 SELECT randomblob(100) FROM t1; ROLLBACK; PRAGMA integrity_check; } } {ok} db1 close forcedelete test.db #------------------------------------------------------------------------- # do_test 1.1 { sqlite3 db1 test.db sqlite3 db2 test.db db2 eval { |