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| 1 # 2008 May 2 | |
| 2 # | |
| 3 # The author disclaims copyright to this source code. In place of | |
| 4 # a legal notice, here is a blessing: | |
| 5 # | |
| 6 # May you do good and not evil. | |
| 7 # May you find forgiveness for yourself and forgive others. | |
| 8 # May you share freely, never taking more than you give. | |
| 9 # | |
| 10 #*********************************************************************** | |
| 11 # | |
| 12 # Ticket #3093 | |
| 13 # | |
| 14 # Verify that a busy callback waiting on a reserved lock resolves | |
| 15 # once the lock clears. | |
| 16 # | |
| 17 # $Id: tkt3093.test,v 1.2 2008/05/02 14:23:55 drh Exp $ | |
| 18 # | |
| 19 | |
| 20 set testdir [file dirname $argv0] | |
| 21 source $testdir/tester.tcl | |
| 22 | |
| 23 # Set up a test database | |
| 24 # | |
| 25 do_test tkt3093.1 { | |
| 26 db eval { | |
| 27 CREATE TABLE t1(x); | |
| 28 INSERT INTO t1 VALUES(1); | |
| 29 SELECT * FROM t1 | |
| 30 } | |
| 31 } {1} | |
| 32 | |
| 33 # Establish a separate, independent connection to that database. | |
| 34 # | |
| 35 do_test tkt3093.2 { | |
| 36 catch {sqlite3_enable_shared_cache 0} | |
| 37 sqlite3 db2 test.db | |
| 38 db2 eval { | |
| 39 SELECT * FROM t1 | |
| 40 } | |
| 41 } {1} | |
| 42 | |
| 43 # Make sure that clearing a lock allows a pending request for | |
| 44 # a reserved lock to continue. | |
| 45 # | |
| 46 do_test tkt3093.3 { | |
| 47 # This will be the busy callback for connection db2. On the first | |
| 48 # busy callback, commit the transaction in db. This should clear | |
| 49 # the lock so that there should not be a second callback. If the | |
| 50 # busy handler is called a second time, then fail so that we get | |
| 51 # timeout. | |
| 52 proc busy_callback {cnt} { | |
| 53 if {$cnt==0} { | |
| 54 db eval COMMIT | |
| 55 return 0 | |
| 56 } else { | |
| 57 return 1 | |
| 58 } | |
| 59 } | |
| 60 db2 busy ::busy_callback | |
| 61 | |
| 62 # Start a write transaction on db. | |
| 63 db eval { | |
| 64 BEGIN; | |
| 65 INSERT INTO t1 VALUES(2); | |
| 66 } | |
| 67 | |
| 68 # Attempt to modify the database on db2 | |
| 69 catchsql { | |
| 70 UPDATE t1 SET x=x+1; | |
| 71 } db2 | |
| 72 } {0 {}} | |
| 73 | |
| 74 # Verify that everything worked as expected. The db transaction should | |
| 75 # have gone first and added entry 2. Then the db2 transaction would have | |
| 76 # run and added one to each entry. | |
| 77 # | |
| 78 do_test tkt3093.4 { | |
| 79 db eval {SELECT * FROM t1} | |
| 80 } {2 3} | |
| 81 do_test tkt3093.5 { | |
| 82 db2 eval {SELECT * FROM t1} | |
| 83 } {2 3} | |
| 84 db2 close | |
| 85 | |
| 86 finish_test | |
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Chromium Code Reviews
Issue 2363173002:
[sqlite] Remove obsolete reference version 3.8.7.4. (Closed)
