326 lines
9.2 KiB
Plaintext
326 lines
9.2 KiB
Plaintext
# 2007 March 24
|
|
#
|
|
# 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 implements regression tests for SQLite library.
|
|
#
|
|
# $Id: exclusive2.test,v 1.10 2008/11/27 02:22:11 drh Exp $
|
|
|
|
set testdir [file dirname $argv0]
|
|
source $testdir/tester.tcl
|
|
|
|
# Do not use a codec for tests in this file, as the database file is
|
|
# manipulated directly using tcl scripts (using the [hexio_write] command).
|
|
#
|
|
do_not_use_codec
|
|
|
|
ifcapable {!pager_pragmas} {
|
|
finish_test
|
|
return
|
|
}
|
|
|
|
# Tests in this file verify that locking_mode=exclusive causes SQLite to
|
|
# use cached pages even if the database is changed on disk. This doesn't
|
|
# work with mmap.
|
|
if {[permutation]=="mmap"} {
|
|
finish_test
|
|
return
|
|
}
|
|
|
|
# This module does not work right if the cache spills at unexpected
|
|
# moments. So disable the soft-heap-limit.
|
|
#
|
|
sqlite3_soft_heap_limit 0
|
|
|
|
proc pagerChangeCounter {filename new {fd ""}} {
|
|
if {$fd==""} {
|
|
set fd [open $filename RDWR]
|
|
fconfigure $fd -translation binary -encoding binary
|
|
set needClose 1
|
|
} else {
|
|
set needClose 0
|
|
}
|
|
if {$new ne ""} {
|
|
seek $fd 24
|
|
set a [expr {($new&0xFF000000)>>24}]
|
|
set b [expr {($new&0x00FF0000)>>16}]
|
|
set c [expr {($new&0x0000FF00)>>8}]
|
|
set d [expr {($new&0x000000FF)}]
|
|
puts -nonewline $fd [binary format cccc $a $b $c $d]
|
|
flush $fd
|
|
}
|
|
|
|
seek $fd 24
|
|
foreach {a b c d} [list 0 0 0 0] {}
|
|
binary scan [read $fd 4] cccc a b c d
|
|
set ret [expr ($a&0x000000FF)<<24]
|
|
incr ret [expr ($b&0x000000FF)<<16]
|
|
incr ret [expr ($c&0x000000FF)<<8]
|
|
incr ret [expr ($d&0x000000FF)<<0]
|
|
|
|
if {$needClose} {close $fd}
|
|
return $ret
|
|
}
|
|
|
|
proc readPagerChangeCounter {filename} {
|
|
set fd [open $filename RDONLY]
|
|
fconfigure $fd -translation binary -encoding binary
|
|
|
|
seek $fd 24
|
|
foreach {a b c d} [list 0 0 0 0] {}
|
|
binary scan [read $fd 4] cccc a b c d
|
|
set ret [expr ($a&0x000000FF)<<24]
|
|
incr ret [expr ($b&0x000000FF)<<16]
|
|
incr ret [expr ($c&0x000000FF)<<8]
|
|
incr ret [expr ($d&0x000000FF)<<0]
|
|
|
|
close $fd
|
|
return $ret
|
|
}
|
|
|
|
|
|
proc t1sig {{db db}} {
|
|
execsql {SELECT count(*), md5sum(a) FROM t1} $db
|
|
}
|
|
do_test exclusive2-1.0 {
|
|
readPagerChangeCounter test.db
|
|
} {0}
|
|
|
|
#-----------------------------------------------------------------------
|
|
# The following tests - exclusive2-1.X - check that:
|
|
#
|
|
# 1-3: Build a database with connection 1, calculate a signature.
|
|
# 4-7: Modify the database using a second connection in a way that
|
|
# does not modify the freelist, then reset the pager change-counter
|
|
# to the value it had before the modifications.
|
|
# 8: Check that using the first connection, the database signature
|
|
# is still the same. This is because it uses the in-memory cache.
|
|
# It can't tell the db has changed because we reset the change-counter.
|
|
# 9: Increment the change-counter.
|
|
# 10: Ensure that the first connection now sees the updated database. It
|
|
# sees the change-counter has been incremented and discards the
|
|
# invalid in-memory cache.
|
|
#
|
|
# This will only work if the database cache is large enough to hold
|
|
# the entire database. In the case of 1024 byte pages, this means
|
|
# the cache size must be at least 17. Otherwise, some pages will be
|
|
# loaded from the database file in step 8.
|
|
#
|
|
# For similar reasons, this test does not work with the memsubsys1 permutation.
|
|
# Permutation memsubsys1 configures the pcache subsystem to use a static
|
|
# allocation of 24 pages (shared between all pagers). This is not enough for
|
|
# this test.
|
|
#
|
|
do_test exclusive2-1.1 {
|
|
execsql {
|
|
BEGIN;
|
|
CREATE TABLE t1(a, b);
|
|
INSERT INTO t1(a) VALUES(randstr(10, 400));
|
|
INSERT INTO t1(a) VALUES(randstr(10, 400));
|
|
INSERT INTO t1(a) SELECT randstr(10, 400) FROM t1;
|
|
INSERT INTO t1(a) SELECT randstr(10, 400) FROM t1;
|
|
INSERT INTO t1(a) SELECT randstr(10, 400) FROM t1;
|
|
INSERT INTO t1(a) SELECT randstr(10, 400) FROM t1;
|
|
INSERT INTO t1(a) SELECT randstr(10, 400) FROM t1;
|
|
COMMIT;
|
|
SELECT count(*) FROM t1;
|
|
}
|
|
} {64}
|
|
do_test exclusive2-1.2.1 {
|
|
# Make sure the pager cache is large enough to store the
|
|
# entire database.
|
|
set nPage [expr [file size test.db]/1024]
|
|
if {$::SQLITE_DEFAULT_CACHE_SIZE < $nPage} {
|
|
execsql "PRAGMA cache_size = $nPage"
|
|
}
|
|
expr {[execsql {PRAGMA cache_size}] >= $nPage}
|
|
} {1}
|
|
do_test exclusive2-1.2 {
|
|
set ::sig [t1sig]
|
|
readPagerChangeCounter test.db
|
|
} {1}
|
|
do_test exclusive2-1.3 {
|
|
t1sig
|
|
} $::sig
|
|
do_test exclusive2-1.4 {
|
|
sqlite3 db2 test.db
|
|
t1sig db2
|
|
} $::sig
|
|
do_test exclusive2-1.5 {
|
|
execsql {
|
|
UPDATE t1 SET b=a, a=NULL;
|
|
} db2
|
|
expr {[t1sig db2] eq $::sig}
|
|
} 0
|
|
do_test exclusive2-1.6 {
|
|
readPagerChangeCounter test.db
|
|
} {2}
|
|
do_test exclusive2-1.7 {
|
|
pagerChangeCounter test.db 1
|
|
} {1}
|
|
if {[permutation] != "memsubsys1"} {
|
|
do_test exclusive2-1.9 {
|
|
t1sig
|
|
expr {[t1sig] eq $::sig}
|
|
} {1}
|
|
}
|
|
do_test exclusive2-1.10 {
|
|
pagerChangeCounter test.db 2
|
|
} {2}
|
|
do_test exclusive2-1.11 {
|
|
expr {[t1sig] eq $::sig}
|
|
} {0}
|
|
db2 close
|
|
|
|
#--------------------------------------------------------------------
|
|
# These tests - exclusive2-2.X - are similar to exclusive2-1.X,
|
|
# except that they are run with locking_mode=EXCLUSIVE.
|
|
#
|
|
# 1-3: Build a database with exclusive-access connection 1,
|
|
# calculate a signature.
|
|
# 4: Corrupt the database by writing 10000 bytes of garbage
|
|
# starting at the beginning of page 2. Check that connection 1
|
|
# still works. It should be accessing the in-memory cache.
|
|
# 5-6: Modify the dataase change-counter. Connection 1 still works
|
|
# entirely from in-memory cache, because it doesn't check the
|
|
# change-counter.
|
|
# 7-8 Set the locking-mode back to normal. After the db is unlocked,
|
|
# SQLite detects the modified change-counter and discards the
|
|
# in-memory cache. Then it finds the corruption caused in step 4....
|
|
#
|
|
# As above, this test is only applicable if the pager cache is
|
|
# large enough to hold the entire database. With 1024 byte pages,
|
|
# this means 19 pages. We also need to disable the soft-heap-limit
|
|
# to prevent memory-induced cache spills.
|
|
#
|
|
do_test exclusive2-2.1 {
|
|
execsql {PRAGMA cache_size=1000;}
|
|
execsql {PRAGMA locking_mode = exclusive;}
|
|
execsql {
|
|
BEGIN;
|
|
DELETE FROM t1;
|
|
INSERT INTO t1(a) VALUES(randstr(10, 400));
|
|
INSERT INTO t1(a) VALUES(randstr(10, 400));
|
|
INSERT INTO t1(a) SELECT randstr(10, 400) FROM t1;
|
|
INSERT INTO t1(a) SELECT randstr(10, 400) FROM t1;
|
|
INSERT INTO t1(a) SELECT randstr(10, 400) FROM t1;
|
|
INSERT INTO t1(a) SELECT randstr(10, 400) FROM t1;
|
|
INSERT INTO t1(a) SELECT randstr(10, 400) FROM t1;
|
|
COMMIT;
|
|
SELECT count(*) FROM t1;
|
|
}
|
|
} {64}
|
|
do_test exclusive2-2.2.1 {
|
|
# Make sure the pager cache is large enough to store the
|
|
# entire database.
|
|
set nPage [expr [file size test.db]/1024]
|
|
if {$::SQLITE_DEFAULT_CACHE_SIZE < $nPage} {
|
|
execsql "PRAGMA cache_size = $nPage"
|
|
}
|
|
expr {[execsql {PRAGMA cache_size}] >= $nPage}
|
|
} {1}
|
|
do_test exclusive2-2.2 {
|
|
set ::sig [t1sig]
|
|
readPagerChangeCounter test.db
|
|
} {3}
|
|
do_test exclusive2-2.3 {
|
|
t1sig
|
|
} $::sig
|
|
|
|
do_test exclusive2-2.4 {
|
|
set ::fd [open test.db RDWR]
|
|
fconfigure $::fd -translation binary
|
|
seek $::fd 1024
|
|
puts -nonewline $::fd [string repeat [binary format c 0] 10000]
|
|
flush $::fd
|
|
t1sig
|
|
} $::sig
|
|
|
|
do_test exclusive2-2.5 {
|
|
pagerChangeCounter test.db 5 $::fd
|
|
} {5}
|
|
do_test exclusive2-2.6 {
|
|
t1sig
|
|
} $::sig
|
|
do_test exclusive2-2.7 {
|
|
execsql {PRAGMA locking_mode = normal}
|
|
t1sig
|
|
} $::sig
|
|
|
|
do_test exclusive2-2.8 {
|
|
set rc [catch {t1sig} msg]
|
|
list $rc $msg
|
|
} {1 {database disk image is malformed}}
|
|
|
|
#--------------------------------------------------------------------
|
|
# These tests - exclusive2-3.X - verify that the pager change-counter
|
|
# is only incremented by the first change when in exclusive access
|
|
# mode. In normal mode, the change-counter is incremented once
|
|
# per write-transaction.
|
|
#
|
|
|
|
db close
|
|
catch {close $::fd}
|
|
forcedelete test.db
|
|
forcedelete test.db-journal
|
|
|
|
do_test exclusive2-3.0 {
|
|
sqlite3 db test.db
|
|
execsql {
|
|
BEGIN;
|
|
CREATE TABLE t1(a UNIQUE);
|
|
INSERT INTO t1 VALUES(randstr(200, 200));
|
|
INSERT INTO t1 VALUES(randstr(200, 200));
|
|
COMMIT;
|
|
}
|
|
readPagerChangeCounter test.db
|
|
} {1}
|
|
do_test exclusive2-3.1 {
|
|
execsql {
|
|
INSERT INTO t1 VALUES(randstr(200, 200));
|
|
}
|
|
readPagerChangeCounter test.db
|
|
} {2}
|
|
do_test exclusive2-3.2 {
|
|
execsql {
|
|
INSERT INTO t1 VALUES(randstr(200, 200));
|
|
}
|
|
readPagerChangeCounter test.db
|
|
} {3}
|
|
do_test exclusive2-3.3 {
|
|
execsql {
|
|
PRAGMA locking_mode = exclusive;
|
|
INSERT INTO t1 VALUES(randstr(200, 200));
|
|
}
|
|
readPagerChangeCounter test.db
|
|
} {4}
|
|
do_test exclusive2-3.4 {
|
|
breakpoint
|
|
execsql {
|
|
INSERT INTO t1 VALUES(randstr(200, 200));
|
|
}
|
|
readPagerChangeCounter test.db
|
|
} {4}
|
|
do_test exclusive2-3.5 {
|
|
execsql {
|
|
PRAGMA locking_mode = normal;
|
|
INSERT INTO t1 VALUES(randstr(200, 200));
|
|
}
|
|
readPagerChangeCounter test.db
|
|
} {4}
|
|
do_test exclusive2-3.6 {
|
|
execsql {
|
|
INSERT INTO t1 VALUES(randstr(200, 200));
|
|
}
|
|
readPagerChangeCounter test.db
|
|
} {5}
|
|
sqlite3_soft_heap_limit $cmdlinearg(soft-heap-limit)
|
|
|
|
finish_test
|