# 2011 March 30 # # The author disclaims copyright to this source code. In place of # a legal notice, here is a blessing: # # May you do good and not evil. # May you find forgiveness for yourself and forgive others. # May you share freely, never taking more than you give. # #*********************************************************************** # # This file contains tests for the "unix-excl" VFS module (part of # os_unix.c). # set testdir [file dirname $argv0] source $testdir/tester.tcl source $testdir/lock_common.tcl source $testdir/malloc_common.tcl if {$::tcl_platform(platform)!="unix" || [info commands test_syscall]==""} { finish_test return } set testprefix unixexcl # Test that when using VFS "unix-excl", the first time the database is read # a process-wide exclusive lock is taken on it. This means other connections # within the process may still access the db normally, but connections from # outside the process cannot. # do_multiclient_test tn { do_test unixexcl-1.$tn.1 { sql1 { CREATE TABLE t1(a, b); INSERT INTO t1 VALUES('hello', 'world'); } } {} do_test unixexcl-1.$tn.2 { sql2 { SELECT * FROM t1 } } {hello world} do_test unixexcl-1.$tn.3 { code1 { db close sqlite3 db test.db -vfs unix-excl db eval { SELECT * FROM t1 } } } {hello world} if {$tn==1} { do_test unixexcl-1.$tn.4.multiproc { csql2 { SELECT * FROM t1 } } {1 {database is locked}} } else { do_test unixexcl-1.$tn.4.singleproc { csql2 { SELECT * FROM t1 } } {0 {hello world}} } } # Test that when using VFS "unix-excl", if a file is opened in read-only mode # the behaviour is the same as if VFS "unix" were used. # do_multiclient_test tn { do_test unixexcl-2.$tn.1 { sql1 { CREATE TABLE t1(a, b); INSERT INTO t1 VALUES('hello', 'world'); } } {} do_test unixexcl-2.$tn.2 { sql2 { SELECT * FROM t1 } } {hello world} do_test unixexcl-2.$tn.3 { code1 { db close sqlite3 db test.db -readonly yes -vfs unix-excl db eval { SELECT * FROM t1 } } } {hello world} do_test unixexcl-2.$tn.4 { csql2 { SELECT * FROM t1 } } {0 {hello world}} } do_multiclient_test tn { do_test unixexcl-3.$tn.1 { code1 { db close; sqlite3 db file:test.db?psow=0 -vfs unix-excl -uri 1 } code2 { db2 close; sqlite3 db2 file:test.db?psow=0 -vfs unix-excl -uri 1 } sql1 { PRAGMA auto_vacuum = 0; PRAGMA journal_mode = WAL; CREATE TABLE t1(a, b); INSERT INTO t1 VALUES(1, 2); } } {wal} if {$tn==1} { do_test unixexcl-3.$tn.1.multiproc { csql2 { SELECT * FROM t1; } } {1 {database is locked}} } else { do_test unixexcl-3.$tn.1.singleproc { sql2 { SELECT * FROM t1; } } {1 2} do_test unixexcl-3.$tn.2 { sql2 { BEGIN; SELECT * FROM t1; } } {1 2} do_test unixexcl-3.$tn.3 { sql1 { PRAGMA wal_checkpoint; INSERT INTO t1 VALUES(3, 4); } } {0 3 3} do_test unixexcl-3.$tn.4 { sql2 { SELECT * FROM t1; } } {1 2} do_test unixexcl-3.$tn.5 { sql1 { SELECT * FROM t1; } } {1 2 3 4} do_test unixexcl-3.$tn.6 { sql2 { COMMIT; SELECT * FROM t1; } } {1 2 3 4} do_test unixexcl-3.$tn.7 { sql1 { PRAGMA wal_checkpoint; } } {0 4 4} } } finish_test