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Overview
| Comment: | Add test cases for the instrumentation on this branch. Fix some OOM handling issues in the same. |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | transaction-pages |
| Files: | files | file ages | folders |
| SHA1: |
50ca94b919ccb462f523513fd7fe9995 |
| User & Date: | dan 2017-01-19 11:52:13 |
Context
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2017-01-19
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| 11:52 | Add test cases for the instrumentation on this branch. Fix some OOM handling issues in the same. Leaf check-in: 50ca94b9 user: dan tags: transaction-pages | |
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2017-01-18
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| 20:14 | Add temporary code to record and report on the set of b-tree pages read and written by the current transaction. This is likely still buggy. check-in: 2a8f6c89 user: dan tags: transaction-pages | |
Changes
Changes to src/btree.c.
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sqlite3BtreeEnter(p); p->pBt->nPage = 0; rc = newDatabase(p->pBt); sqlite3BtreeLeave(p); return rc; } /* ** Attempt to start a new transaction. A write-transaction ** is started if the second argument is nonzero, otherwise a read- ** transaction. If the second argument is 2 or more and exclusive ** transaction is started, meaning that no other process is allowed ** to access the database. A preexisting transaction may not be ** upgraded to exclusive by calling this routine a second time - the ................................................................................ if( pBlock ){ sqlite3ConnectionBlocked(p->db, pBlock); rc = SQLITE_LOCKED_SHAREDCACHE; goto trans_begun; } } #endif /* Any read-only or read-write transaction implies a read-lock on ** page 1. So if some other shared-cache client already has a write-lock ** on page 1, the transaction cannot be opened. */ rc = querySharedCacheTableLock(p, MASTER_ROOT, READ_LOCK); if( SQLITE_OK!=rc ) goto trans_begun; ................................................................................ if( rc==SQLITE_OK ){ put4byte(&pPage1->aData[28], pBt->nPage); } } } } #ifdef SQLITE_ENABLE_TRANSACTION_PAGES if( rc==SQLITE_OK && wrflag ){ assert( pBt->pBtRead==0 && pBt->pBtWrite==0 ); pBt->pBtRead = sqlite3BitvecCreate(pBt->nPage); pBt->pBtWrite = sqlite3BitvecCreate(pBt->nPage); pBt->pBtAlloc = sqlite3BitvecCreate(pBt->nPage); if( pBt->pBtRead==0 || pBt->pBtWrite==0 || pBt->pBtAlloc==0 ){ rc = SQLITE_NOMEM; sqlite3BitvecDestroy(pBt->pBtRead); sqlite3BitvecDestroy(pBt->pBtWrite); sqlite3BitvecDestroy(pBt->pBtAlloc); pBt->pBtAlloc = pBt->pBtRead = pBt->pBtWrite = 0; } } #endif trans_begun: if( rc==SQLITE_OK && wrflag ){ /* This call makes sure that the pager has the correct number of ** open savepoints. If the second parameter is greater than 0 and ** the sub-journal is not already open, then it will be opened here. */ rc = sqlite3PagerOpenSavepoint(pBt->pPager, p->db->nSavepoint); } btreeIntegrity(p); sqlite3BtreeLeave(p); return rc; } #ifndef SQLITE_OMIT_AUTOVACUUM ................................................................................ /* Set the current transaction state to TRANS_NONE and unlock the ** pager if this call closed the only read or write transaction. */ p->inTrans = TRANS_NONE; unlockBtreeIfUnused(pBt); } #ifdef SQLITE_ENABLE_TRANSACTION_PAGES if( pBt->inTransaction!=TRANS_WRITE ){ sqlite3BitvecDestroy(pBt->pBtRead); sqlite3BitvecDestroy(pBt->pBtWrite); sqlite3BitvecDestroy(pBt->pBtAlloc); pBt->pBtAlloc = pBt->pBtRead = pBt->pBtWrite = 0; sqlite3_free(pBt->aiRead); sqlite3_free(pBt->aiWrite); pBt->aiRead = pBt->aiWrite = 0; pBt->nRead = pBt->nWrite = 0; } #endif btreeIntegrity(p); } /* ** Commit the transaction currently in progress. ** ** This routine implements the second phase of a 2-phase commit. The |
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sqlite3BtreeEnter(p); p->pBt->nPage = 0; rc = newDatabase(p->pBt); sqlite3BtreeLeave(p); return rc; } #ifdef SQLITE_ENABLE_TRANSACTION_PAGES /* ** If the b-tree is not currently in a write transaction, free the various ** resources allocated for the sqlite3_transaction_pages() functionality. */ static void freeTransactionPagesBitvec(BtShared *pBt){ if( pBt->inTransaction!=TRANS_WRITE ){ sqlite3BitvecDestroy(pBt->pBtRead); sqlite3BitvecDestroy(pBt->pBtWrite); sqlite3BitvecDestroy(pBt->pBtAlloc); pBt->pBtAlloc = pBt->pBtRead = pBt->pBtWrite = 0; sqlite3_free(pBt->aiRead); sqlite3_free(pBt->aiWrite); pBt->aiRead = pBt->aiWrite = 0; pBt->nRead = pBt->nWrite = 0; } } #else # define freeTransactionPagesBitvec(x) #endif /* ** Attempt to start a new transaction. A write-transaction ** is started if the second argument is nonzero, otherwise a read- ** transaction. If the second argument is 2 or more and exclusive ** transaction is started, meaning that no other process is allowed ** to access the database. A preexisting transaction may not be ** upgraded to exclusive by calling this routine a second time - the ................................................................................ if( pBlock ){ sqlite3ConnectionBlocked(p->db, pBlock); rc = SQLITE_LOCKED_SHAREDCACHE; goto trans_begun; } } #endif #ifdef SQLITE_ENABLE_TRANSACTION_PAGES if( wrflag ){ assert( pBt->pBtRead==0 && pBt->pBtWrite==0 && pBt->pBtAlloc==0 ); assert( rc==SQLITE_OK ); pBt->pBtRead = sqlite3BitvecCreate(pBt->nPage); pBt->pBtWrite = sqlite3BitvecCreate(pBt->nPage); pBt->pBtAlloc = sqlite3BitvecCreate(pBt->nPage); if( pBt->pBtRead==0 || pBt->pBtWrite==0 || pBt->pBtAlloc==0 ){ rc = SQLITE_NOMEM; goto trans_begun; } } #endif /* Any read-only or read-write transaction implies a read-lock on ** page 1. So if some other shared-cache client already has a write-lock ** on page 1, the transaction cannot be opened. */ rc = querySharedCacheTableLock(p, MASTER_ROOT, READ_LOCK); if( SQLITE_OK!=rc ) goto trans_begun; ................................................................................ if( rc==SQLITE_OK ){ put4byte(&pPage1->aData[28], pBt->nPage); } } } } trans_begun: if( rc==SQLITE_OK && wrflag ){ /* This call makes sure that the pager has the correct number of ** open savepoints. If the second parameter is greater than 0 and ** the sub-journal is not already open, then it will be opened here. */ rc = sqlite3PagerOpenSavepoint(pBt->pPager, p->db->nSavepoint); } freeTransactionPagesBitvec(pBt); btreeIntegrity(p); sqlite3BtreeLeave(p); return rc; } #ifndef SQLITE_OMIT_AUTOVACUUM ................................................................................ /* Set the current transaction state to TRANS_NONE and unlock the ** pager if this call closed the only read or write transaction. */ p->inTrans = TRANS_NONE; unlockBtreeIfUnused(pBt); } freeTransactionPagesBitvec(pBt); btreeIntegrity(p); } /* ** Commit the transaction currently in progress. ** ** This routine implements the second phase of a 2-phase commit. The |
Changes to test/tpages.test.
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} {
set n1 [expr $n1]
set n2 [expr $n2]
reset_db
do_execsql_test 1.$n1.1 {
CREATE TABLE t1(a, b, c);
WITH s(i) AS (
................................................................................
SELECT * FROM t2;
}
sqlite3_transaction_pages db main
} [list [integers $iFirst $nInt] {}]
execsql cOMMIT
}
finish_test
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60000 5001
60000 5
5000 1000
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} {
set n1 [expr $n1]
set n2 [expr $n2]
reset_db
do_execsql_test 1.$n1.1 {
CREATE TABLE t1(a, b, c);
WITH s(i) AS (
................................................................................
SELECT * FROM t2;
}
sqlite3_transaction_pages db main
} [list [integers $iFirst $nInt] {}]
execsql cOMMIT
}
#-------------------------------------------------------------------------
#
proc do_transaction_pages_test {tn sql pages} {
uplevel [list execsql $sql]
uplevel [list \
do_test $tn {sqlite3_transaction_pages db main} [list {*}$pages]
]
}
reset_db
do_transaction_pages_test 2.0 {
PRAGMA auto_vacuum = 0;
PRAGMA page_size = 1024;
CREATE TABLE t1(x);
BEGIN;
INSERT INTO t1 VALUES(randomblob(1500));
} {2 2}
do_transaction_pages_test 2.1 {
COMMIT;
BEGIN;
DELETE FROM t1;
} {2 2}
reset_db
do_execsql_test 2.2 {
PRAGMA auto_vacuum = 0;
PRAGMA page_size = 1024;
CREATE TABLE t1(x);
INSERT INTO t1 VALUES(randomblob(900));
INSERT INTO t1 VALUES(randomblob(900));
CREATE TABLE t2(y);
}
do_transaction_pages_test 2.3 {
BEGIN;
UPDATE t1 SET x=randomblob(899);
} {{2 3 4} {3 4}}
do_transaction_pages_test 2.4 {
DELETE FROM t1;
COMMIT;
} {{} {}}
do_transaction_pages_test 2.5 {
BEGIN;
INSERT INTO t2 VALUES(randomblob(900));
INSERT INTO t2 VALUES(randomblob(900));
} {5 5}
do_transaction_pages_test 2.6 {
COMMIT;
BEGIN;
INSERT INTO t1 VALUES(randomblob(900));
} {2 2}
do_transaction_pages_test 2.7 {
INSERT INTO t1 VALUES(randomblob(900));
INSERT INTO t1 VALUES(randomblob(900));
INSERT INTO t1 VALUES(randomblob(900));
INSERT INTO t1 VALUES(randomblob(900));
} {2 2}
finish_test
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