501 lines
13 KiB
Plaintext
501 lines
13 KiB
Plaintext
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# 2009 March 04
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#
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# The author disclaims copyright to this source code. In place of
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# a legal notice, here is a blessing:
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#
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# May you do good and not evil.
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# May you find forgiveness for yourself and forgive others.
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# May you share freely, never taking more than you give.
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#
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#***********************************************************************
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# This file implements regression tests for SQLite library. The
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# focus of this file is testing the sqlite3_unlock_notify() API.
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#
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# $Id: notify1.test,v 1.4 2009/06/05 17:09:12 drh Exp $
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set testdir [file dirname $argv0]
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source $testdir/tester.tcl
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ifcapable !unlock_notify||!shared_cache {
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finish_test
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return
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}
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db close
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set ::enable_shared_cache [sqlite3_enable_shared_cache 1]
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#-------------------------------------------------------------------------
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# Warm body test. Test that an unlock-notify callback can be registered
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# and that it is invoked.
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#
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do_test notify1-1.1 {
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sqlite3 db test.db
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sqlite3 db2 test.db
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execsql { CREATE TABLE t1(a, b) }
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} {}
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do_test notify1-1.2 {
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execsql {
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BEGIN;
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INSERT INTO t1 VALUES(1, 2);
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}
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catchsql { INSERT INTO t1 VALUES(3, 4) } db2
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} {1 {database table is locked}}
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do_test notify1-1.3 {
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set zScript ""
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db2 unlock_notify {
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set zScript "db2 eval { INSERT INTO t1 VALUES(3, 4) }"
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}
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execsql { SELECT * FROM t1 }
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} {1 2}
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do_test notify1-1.4 {
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set zScript
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} {}
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do_test notify1-1.5 {
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execsql { COMMIT }
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eval $zScript
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execsql { SELECT * FROM t1 }
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} {1 2 3 4}
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#-------------------------------------------------------------------------
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# Verify that invoking the "unlock_notify" method with no arguments
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# (which is the equivalent of invoking sqlite3_unlock_notify() with
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# a NULL xNotify argument) cancels a pending notify callback.
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#
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do_test notify1-1.11 {
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execsql { DROP TABLE t1; CREATE TABLE t1(a, b) }
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} {}
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do_test notify1-1.12 {
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execsql {
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BEGIN;
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INSERT INTO t1 VALUES(1, 2);
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}
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catchsql { INSERT INTO t1 VALUES(3, 4) } db2
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} {1 {database table is locked}}
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do_test notify1-1.13 {
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set zScript ""
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db2 unlock_notify {
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set zScript "db2 eval { INSERT INTO t1 VALUES(3, 4) }"
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}
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execsql { SELECT * FROM t1 }
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} {1 2}
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do_test notify1-1.14 {
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set zScript
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} {}
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do_test notify1-1.15 {
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db2 unlock_notify
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execsql { COMMIT }
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eval $zScript
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execsql { SELECT * FROM t1 }
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} {1 2}
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#-------------------------------------------------------------------------
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# The following tests, notify1-2.*, test that deadlock is detected
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# correctly.
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#
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do_test notify1-2.1 {
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execsql {
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CREATE TABLE t2(a, b);
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INSERT INTO t2 VALUES('I', 'II');
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}
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} {}
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#
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# Test for simple deadlock involving two database connections.
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#
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# 1. Grab a write-lock on t1 with [db]. Then grab a read-lock on t2 with [db2].
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# 2. Try to grab a read-lock on t1 with [db2] (fails).
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# 3. Have [db2] wait on the read-lock it failed to obtain in step 2.
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# 4. Try to grab a write-lock on t2 with [db] (fails).
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# 5. Try to have [db] wait on the lock from step 4. Fails, as the system
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# would be deadlocked (since [db2] is already waiting on [db], and this
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# operation would have [db] wait on [db2]).
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#
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do_test notify1-2.2.1 {
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execsql {
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BEGIN;
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INSERT INTO t1 VALUES(5, 6);
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}
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execsql {
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BEGIN;
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SELECT * FROM t2;
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} db2
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} {I II}
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do_test notify1-2.2.2 {
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catchsql { SELECT * FROM t1 } db2
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} {1 {database table is locked: t1}}
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do_test notify1-2.2.3 {
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db2 unlock_notify {lappend unlock_notify db2}
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} {}
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do_test notify1-2.2.4 {
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catchsql { INSERT INTO t2 VALUES('III', 'IV') }
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} {1 {database table is locked: t2}}
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do_test notify1-2.2.5 {
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set rc [catch { db unlock_notify {lappend unlock_notify db} } msg]
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list $rc $msg
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} {1 {database is deadlocked}}
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#
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# Test for slightly more complex deadlock involving three database
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# connections: db, db2 and db3.
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#
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do_test notify1-2.3.1 {
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db close
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db2 close
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forcedelete test.db test2.db test3.db
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foreach con {db db2 db3} {
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sqlite3 $con test.db
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$con eval { ATTACH 'test2.db' AS aux2 }
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$con eval { ATTACH 'test3.db' AS aux3 }
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}
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execsql {
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CREATE TABLE main.t1(a, b);
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CREATE TABLE aux2.t2(a, b);
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CREATE TABLE aux3.t3(a, b);
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}
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} {}
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do_test notify1-2.3.2 {
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execsql { BEGIN ; INSERT INTO t1 VALUES(1, 2) } db
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execsql { BEGIN ; INSERT INTO t2 VALUES(1, 2) } db2
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execsql { BEGIN ; INSERT INTO t3 VALUES(1, 2) } db3
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} {}
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do_test notify1-2.3.3 {
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catchsql { SELECT * FROM t2 } db
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} {1 {database table is locked: t2}}
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do_test notify1-2.3.4 {
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catchsql { SELECT * FROM t3 } db2
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} {1 {database table is locked: t3}}
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do_test notify1-2.3.5 {
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catchsql { SELECT * FROM t1 } db3
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} {1 {database table is locked: t1}}
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do_test notify1-2.3.6 {
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set lUnlock [list]
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db unlock_notify {lappend lUnlock db}
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db2 unlock_notify {lappend lUnlock db2}
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} {}
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do_test notify1-2.3.7 {
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set rc [catch { db3 unlock_notify {lappend lUnlock db3} } msg]
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list $rc $msg
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} {1 {database is deadlocked}}
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do_test notify1-2.3.8 {
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execsql { COMMIT }
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set lUnlock
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} {}
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do_test notify1-2.3.9 {
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db3 unlock_notify {lappend lUnlock db3}
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set lUnlock
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} {db3}
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do_test notify1-2.3.10 {
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execsql { COMMIT } db2
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set lUnlock
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} {db3 db}
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do_test notify1-2.3.11 {
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execsql { COMMIT } db3
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set lUnlock
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} {db3 db db2}
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catch { db3 close }
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catch { db2 close }
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catch { db close }
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#-------------------------------------------------------------------------
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# The following tests, notify1-3.* and notify1-4.*, test that callbacks
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# can be issued when there are many (>16) connections waiting on a single
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# unlock event.
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#
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foreach {tn nConn} {3 20 4 76} {
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do_test notify1-$tn.1 {
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sqlite3 db test.db
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execsql {
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BEGIN;
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INSERT INTO t1 VALUES('a', 'b');
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}
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} {}
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set lUnlock [list]
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set lUnlockFinal [list]
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for {set ii 1} {$ii <= $nConn} {incr ii} {
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do_test notify1-$tn.2.$ii.1 {
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set cmd "db$ii"
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sqlite3 $cmd test.db
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catchsql { SELECT * FROM t1 } $cmd
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} {1 {database table is locked: t1}}
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do_test notify1-$tn.2.$ii.2 {
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$cmd unlock_notify "lappend lUnlock $ii"
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} {}
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lappend lUnlockFinal $ii
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}
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do_test notify1-$tn.3 {
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set lUnlock
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} {}
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do_test notify1-$tn.4 {
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execsql {COMMIT}
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lsort -integer $lUnlock
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} $lUnlockFinal
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do_test notify1-$tn.5 {
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for {set ii 1} {$ii <= $nConn} {incr ii} {
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"db$ii" close
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}
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} {}
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}
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db close
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#-------------------------------------------------------------------------
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# These tests, notify1-5.*, test that a malloc() failure that occurs while
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# allocating an array to use as an argument to an unlock-notify callback
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# is handled correctly.
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#
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source $testdir/malloc_common.tcl
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do_malloc_test notify1-5 -tclprep {
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set ::lUnlock [list]
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execsql {
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CREATE TABLE t1(a, b);
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BEGIN;
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INSERT INTO t1 VALUES('a', 'b');
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}
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for {set ii 1} {$ii <= 60} {incr ii} {
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set cmd "db$ii"
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sqlite3 $cmd test.db
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catchsql { SELECT * FROM t1 } $cmd
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$cmd unlock_notify "lappend ::lUnlock $ii"
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}
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} -sqlbody {
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COMMIT;
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} -cleanup {
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# One of two things should have happened:
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#
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# 1) The transaction opened by [db] was not committed. No unlock-notify
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# callbacks were invoked, OR
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# 2) The transaction opened by [db] was committed and 60 unlock-notify
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# callbacks were invoked.
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#
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do_test notify1-5.systemstate {
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expr { ([llength $::lUnlock]==0 && [sqlite3_get_autocommit db]==0)
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|| ([llength $::lUnlock]==60 && [sqlite3_get_autocommit db]==1)
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}
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} {1}
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for {set ii 1} {$ii <= 60} {incr ii} { "db$ii" close }
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}
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#-------------------------------------------------------------------------
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# Test cases notify1-6.* test cases where the following occur:
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#
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# notify1-6.1.*: Test encountering an SQLITE_LOCKED error when the
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# "blocking connection" has already been set by a previous
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# SQLITE_LOCKED.
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#
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# notify1-6.2.*: Test encountering an SQLITE_LOCKED error when already
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# waiting on an unlock-notify callback.
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#
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# notify1-6.3.*: Test that if an SQLITE_LOCKED error is encountered while
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# already waiting on an unlock-notify callback, and then
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# the blocker that caused the SQLITE_LOCKED commits its
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# transaction, the unlock-notify callback is not invoked.
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#
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# notify1-6.4.*: Like 6.3.*, except that instead of the second blocker
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# committing its transaction, the first does. The
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# unlock-notify callback is therefore invoked.
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#
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db close
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do_test notify1-6.1.1 {
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forcedelete test.db test2.db
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foreach conn {db db2 db3} {
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sqlite3 $conn test.db
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execsql { ATTACH 'test2.db' AS two } $conn
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}
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execsql {
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CREATE TABLE t1(a, b);
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CREATE TABLE two.t2(a, b);
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}
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execsql {
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BEGIN;
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INSERT INTO t1 VALUES(1, 2);
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} db2
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execsql {
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BEGIN;
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INSERT INTO t2 VALUES(1, 2);
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} db3
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} {}
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do_test notify1-6.1.2 {
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catchsql { SELECT * FROM t2 }
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} {1 {database table is locked: t2}}
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do_test notify1-6.1.3 {
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catchsql { SELECT * FROM t1 }
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} {1 {database table is locked: t1}}
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do_test notify1-6.2.1 {
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set unlocked 0
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db unlock_notify {set unlocked 1}
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set unlocked
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} {0}
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do_test notify1-6.2.2 {
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catchsql { SELECT * FROM t2 }
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} {1 {database table is locked: t2}}
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do_test notify1-6.2.3 {
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execsql { COMMIT } db2
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set unlocked
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} {1}
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do_test notify1-6.3.1 {
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execsql {
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BEGIN;
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INSERT INTO t1 VALUES(3, 4);
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} db2
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} {}
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do_test notify1-6.3.2 {
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catchsql { SELECT * FROM t1 }
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} {1 {database table is locked: t1}}
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do_test notify1-6.3.3 {
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set unlocked 0
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db unlock_notify {set unlocked 1}
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set unlocked
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} {0}
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do_test notify1-6.3.4 {
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catchsql { SELECT * FROM t2 }
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} {1 {database table is locked: t2}}
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do_test notify1-6.3.5 {
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execsql { COMMIT } db3
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set unlocked
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} {0}
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do_test notify1-6.4.1 {
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execsql {
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BEGIN;
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INSERT INTO t2 VALUES(3, 4);
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} db3
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catchsql { SELECT * FROM t2 }
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} {1 {database table is locked: t2}}
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do_test notify1-6.4.2 {
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execsql { COMMIT } db2
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set unlocked
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} {1}
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do_test notify1-6.4.3 {
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execsql { COMMIT } db3
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} {}
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db close
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db2 close
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db3 close
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|
|
||
|
|
#-------------------------------------------------------------------------
|
||
|
|
# Test cases notify1-7.* tests that when more than one distinct
|
||
|
|
# unlock-notify function is registered, all are invoked correctly.
|
||
|
|
#
|
||
|
|
proc unlock_notify {} {
|
||
|
|
incr ::unlock_notify
|
||
|
|
}
|
||
|
|
do_test notify1-7.1 {
|
||
|
|
foreach conn {db db2 db3} {
|
||
|
|
sqlite3 $conn test.db
|
||
|
|
}
|
||
|
|
execsql {
|
||
|
|
BEGIN;
|
||
|
|
INSERT INTO t1 VALUES(5, 6);
|
||
|
|
}
|
||
|
|
} {}
|
||
|
|
do_test notify1-7.2 {
|
||
|
|
catchsql { SELECT * FROM t1 } db2
|
||
|
|
} {1 {database table is locked: t1}}
|
||
|
|
do_test notify1-7.3 {
|
||
|
|
catchsql { SELECT * FROM t1 } db3
|
||
|
|
} {1 {database table is locked: t1}}
|
||
|
|
do_test notify1-7.4 {
|
||
|
|
set unlock_notify 0
|
||
|
|
db2 unlock_notify unlock_notify
|
||
|
|
sqlite3_unlock_notify db3
|
||
|
|
} {SQLITE_OK}
|
||
|
|
do_test notify1-7.5 {
|
||
|
|
set unlock_notify
|
||
|
|
} {0}
|
||
|
|
do_test notify1-7.6 {
|
||
|
|
execsql { COMMIT }
|
||
|
|
set unlock_notify
|
||
|
|
} {2}
|
||
|
|
|
||
|
|
#-------------------------------------------------------------------------
|
||
|
|
# Test cases notify1-8.* tests that the correct SQLITE_LOCKED extended
|
||
|
|
# error code is returned in various scenarios.
|
||
|
|
#
|
||
|
|
do_test notify1-8.1 {
|
||
|
|
execsql {
|
||
|
|
BEGIN;
|
||
|
|
INSERT INTO t1 VALUES(7, 8);
|
||
|
|
}
|
||
|
|
catchsql { SELECT * FROM t1 } db2
|
||
|
|
} {1 {database table is locked: t1}}
|
||
|
|
do_test notify1-8.2 {
|
||
|
|
sqlite3_extended_errcode db2
|
||
|
|
} {SQLITE_LOCKED_SHAREDCACHE}
|
||
|
|
|
||
|
|
do_test notify1-8.3 {
|
||
|
|
execsql {
|
||
|
|
COMMIT;
|
||
|
|
BEGIN EXCLUSIVE;
|
||
|
|
}
|
||
|
|
catchsql { SELECT * FROM t1 } db2
|
||
|
|
} {1 {database schema is locked: main}}
|
||
|
|
do_test notify1-8.4 {
|
||
|
|
sqlite3_extended_errcode db2
|
||
|
|
} {SQLITE_LOCKED_SHAREDCACHE}
|
||
|
|
|
||
|
|
do_test notify1-8.X {
|
||
|
|
execsql { COMMIT }
|
||
|
|
} {}
|
||
|
|
|
||
|
|
#-------------------------------------------------------------------------
|
||
|
|
# Test cases notify1-9.* test the shared-cache 'pending-lock' feature.
|
||
|
|
#
|
||
|
|
do_test notify1-9.1 {
|
||
|
|
execsql {
|
||
|
|
CREATE TABLE t2(a, b);
|
||
|
|
BEGIN;
|
||
|
|
SELECT * FROM t1;
|
||
|
|
} db2
|
||
|
|
} {1 2 3 4 5 6 7 8}
|
||
|
|
do_test notify1-9.2 {
|
||
|
|
execsql { SELECT * FROM t1 } db3
|
||
|
|
} {1 2 3 4 5 6 7 8}
|
||
|
|
do_test notify1-9.3 {
|
||
|
|
catchsql {
|
||
|
|
BEGIN;
|
||
|
|
INSERT INTO t1 VALUES(9, 10);
|
||
|
|
}
|
||
|
|
} {1 {database table is locked: t1}}
|
||
|
|
do_test notify1-9.4 {
|
||
|
|
catchsql { SELECT * FROM t2 } db3
|
||
|
|
} {1 {database table is locked}}
|
||
|
|
do_test notify1-9.5 {
|
||
|
|
execsql { COMMIT } db2
|
||
|
|
execsql { SELECT * FROM t2 } db3
|
||
|
|
} {}
|
||
|
|
do_test notify1-9.6 {
|
||
|
|
execsql { COMMIT }
|
||
|
|
} {}
|
||
|
|
|
||
|
|
do_test notify1-9.7 {
|
||
|
|
execsql {
|
||
|
|
BEGIN;
|
||
|
|
SELECT * FROM t1;
|
||
|
|
} db2
|
||
|
|
} {1 2 3 4 5 6 7 8}
|
||
|
|
do_test notify1-9.8 {
|
||
|
|
execsql { SELECT * FROM t1 } db3
|
||
|
|
} {1 2 3 4 5 6 7 8}
|
||
|
|
do_test notify1-9.9 {
|
||
|
|
catchsql {
|
||
|
|
BEGIN;
|
||
|
|
INSERT INTO t1 VALUES(9, 10);
|
||
|
|
}
|
||
|
|
} {1 {database table is locked: t1}}
|
||
|
|
do_test notify1-9.10 {
|
||
|
|
catchsql { SELECT * FROM t2 } db3
|
||
|
|
} {1 {database table is locked}}
|
||
|
|
do_test notify1-9.11 {
|
||
|
|
execsql { COMMIT }
|
||
|
|
execsql { SELECT * FROM t2 } db3
|
||
|
|
} {}
|
||
|
|
do_test notify1-9.12 {
|
||
|
|
execsql { COMMIT } db2
|
||
|
|
} {}
|
||
|
|
|
||
|
|
db close
|
||
|
|
db2 close
|
||
|
|
db3 close
|
||
|
|
sqlite3_enable_shared_cache $::enable_shared_cache
|
||
|
|
finish_test
|