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| 1 # 2009 February 26 | |
| 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 # $Id: thread004.test,v 1.3 2009/06/05 17:09:12 drh Exp $ | |
| 13 | |
| 14 set testdir [file dirname $argv0] | |
| 15 | |
| 16 source $testdir/tester.tcl | |
| 17 if {[run_thread_tests]==0} { finish_test ; return } | |
| 18 ifcapable !shared_cache { | |
| 19 finish_test | |
| 20 return | |
| 21 } | |
| 22 if { [info commands sqlite3_table_column_metadata] eq "" } { | |
| 23 finish_test | |
| 24 return | |
| 25 } | |
| 26 | |
| 27 # Use shared-cache mode for this test. | |
| 28 # | |
| 29 db close | |
| 30 set ::enable_shared_cache [sqlite3_enable_shared_cache] | |
| 31 sqlite3_enable_shared_cache 1 | |
| 32 | |
| 33 # Create a table in database test.db | |
| 34 # | |
| 35 sqlite3 db test.db | |
| 36 do_test thread004-1.1 { | |
| 37 execsql { CREATE TABLE t1(a, b, c) } | |
| 38 } {} | |
| 39 | |
| 40 do_test thread004-1.2 { | |
| 41 | |
| 42 set ThreadOne { | |
| 43 set iStart [clock_seconds] | |
| 44 while {[clock_seconds]<$iStart+20} { | |
| 45 set ::DB [sqlite3_open test.db] | |
| 46 sqlite3_close $::DB | |
| 47 } | |
| 48 } | |
| 49 set ThreadTwo { | |
| 50 set ::DB [sqlite3_open test.db] | |
| 51 set iStart [clock_seconds] | |
| 52 set nErr 0 | |
| 53 while {[clock_seconds] <$iStart+20} { | |
| 54 incr nErr [catch {sqlite3_table_column_metadata $::DB main t1 a}] | |
| 55 } | |
| 56 sqlite3_close $::DB | |
| 57 set nErr | |
| 58 } | |
| 59 | |
| 60 # Run two threads. The first thread opens and closes database test.db | |
| 61 # repeatedly. Each time this happens, the in-memory schema used by | |
| 62 # all connections to test.db is discarded. | |
| 63 # | |
| 64 # The second thread calls sqlite3_table_column_metadata() over and | |
| 65 # over again. Each time it is called, the database schema is loaded | |
| 66 # if it is not already in memory. At one point this was crashing. | |
| 67 # | |
| 68 unset -nocomplain finished | |
| 69 thread_spawn finished(1) $thread_procs $ThreadOne | |
| 70 thread_spawn finished(2) $thread_procs $ThreadTwo | |
| 71 | |
| 72 foreach t {1 2} { | |
| 73 if {![info exists finished($t)]} { vwait finished($t) } | |
| 74 } | |
| 75 | |
| 76 set finished(2) | |
| 77 } {0} | |
| 78 sqlite3_enable_shared_cache $::enable_shared_cache | |
| 79 finish_test | |
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Chromium Code Reviews
Issue 2363173002:
[sqlite] Remove obsolete reference version 3.8.7.4. (Closed)
