222 lines
6.2 KiB
Plaintext
222 lines
6.2 KiB
Plaintext
# 2008 May 12
|
|
#
|
|
# 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 tests that if sqlite3_release_memory() is called to reclaim
|
|
# memory from a pager that is in the error-state, SQLite does not
|
|
# incorrectly write dirty pages out to the database (not safe to do
|
|
# once the pager is in error state).
|
|
#
|
|
# $Id: ioerr5.test,v 1.5 2008/08/28 18:35:34 danielk1977 Exp $
|
|
|
|
set testdir [file dirname $argv0]
|
|
source $testdir/tester.tcl
|
|
|
|
ifcapable !memorymanage||!shared_cache {
|
|
finish_test
|
|
return
|
|
}
|
|
|
|
db close
|
|
|
|
set ::enable_shared_cache [sqlite3_enable_shared_cache 1]
|
|
set ::soft_limit [sqlite3_soft_heap_limit 1048576]
|
|
|
|
# This procedure prepares, steps and finalizes an SQL statement via the
|
|
# UTF-16 APIs. The text representation of an SQLite error code is returned
|
|
# ("SQLITE_OK", "SQLITE_IOERR" etc.). The actual results returned by the
|
|
# SQL statement, if it is a SELECT, are not available.
|
|
#
|
|
# This can be useful for testing because it forces SQLite to make an extra
|
|
# call to sqlite3_malloc() when translating from the supplied UTF-16 to
|
|
# the UTF-8 encoding used internally.
|
|
#
|
|
proc dosql16 {zSql {db db}} {
|
|
set sql [encoding convertto unicode $zSql]
|
|
append sql "\00\00"
|
|
set stmt [sqlite3_prepare16 $db $sql -1 {}]
|
|
sqlite3_step $stmt
|
|
set rc [sqlite3_finalize $stmt]
|
|
}
|
|
|
|
proc compilesql16 {zSql {db db}} {
|
|
set sql [encoding convertto unicode $zSql]
|
|
append sql "\00\00"
|
|
set stmt [sqlite3_prepare16 $db $sql -1 {}]
|
|
set rc [sqlite3_finalize $stmt]
|
|
}
|
|
|
|
# Open two database connections (handle db and db2) to database "test.db".
|
|
#
|
|
proc opendatabases {} {
|
|
catch {db close}
|
|
catch {db2 close}
|
|
sqlite3 db test.db
|
|
sqlite3 db2 test.db
|
|
db2 cache size 0
|
|
db cache size 0
|
|
execsql {
|
|
pragma page_size=512;
|
|
pragma auto_vacuum=2;
|
|
pragma cache_size=16;
|
|
}
|
|
}
|
|
|
|
# Open two database connections and create a single table in the db.
|
|
#
|
|
do_test ioerr5-1.0 {
|
|
opendatabases
|
|
execsql { CREATE TABLE A(Id INTEGER, Name TEXT) }
|
|
} {}
|
|
|
|
foreach locking_mode {normal exclusive} {
|
|
set nPage 2
|
|
for {set iFail 1} {$iFail<200} {incr iFail} {
|
|
sqlite3_soft_heap_limit 1048576
|
|
opendatabases
|
|
execsql { pragma locking_mode=exclusive }
|
|
set nRow [db one {SELECT count(*) FROM a}]
|
|
|
|
# Dirty (at least) one of the pages in the cache.
|
|
do_test ioerr5-1.$locking_mode-$iFail.1 {
|
|
execsql {
|
|
BEGIN EXCLUSIVE;
|
|
INSERT INTO a VALUES(1, 'ABCDEFGHIJKLMNOP');
|
|
}
|
|
} {}
|
|
|
|
# Now try to commit the transaction. Cause an IO error to occur
|
|
# within this operation, which moves the pager into the error state.
|
|
#
|
|
set ::sqlite_io_error_persist 1
|
|
set ::sqlite_io_error_pending $iFail
|
|
do_test ioerr5-1.$locking_mode-$iFail.2 {
|
|
set rc [catchsql {COMMIT}]
|
|
list
|
|
} {}
|
|
set ::sqlite_io_error_hit 0
|
|
set ::sqlite_io_error_persist 0
|
|
set ::sqlite_io_error_pending 0
|
|
|
|
# Read the contents of the database file into a Tcl variable.
|
|
#
|
|
set fd [open test.db]
|
|
fconfigure $fd -translation binary -encoding binary
|
|
set zDatabase [read $fd]
|
|
close $fd
|
|
|
|
# Set a very low soft-limit and then try to compile an SQL statement
|
|
# from UTF-16 text. To do this, SQLite will need to reclaim memory
|
|
# from the pager that is in error state. Including that associated
|
|
# with the dirty page.
|
|
#
|
|
do_test ioerr5-1.$locking_mode-$iFail.3 {
|
|
set bt [btree_from_db db]
|
|
sqlite3_soft_heap_limit 1024
|
|
compilesql16 "SELECT 10"
|
|
array set stats [btree_pager_stats $bt]
|
|
|
|
# If the pager made it all the way to PAGER_SYNCED state, then
|
|
# both in-memory pages are clean. Following the calls to
|
|
# release_memory() that were made as part of the [compilesql16]
|
|
# above, there will be zero pages left in the cache.
|
|
#
|
|
# If the pager did not make it as far as PAGER_SYNCED, the two
|
|
# in memory pages are still dirty. So there will be 2 pages left
|
|
# in the cache following the release_memory() calls.
|
|
#
|
|
if {$stats(state)==5} {
|
|
set nPage 0
|
|
}
|
|
expr {$stats(page)==$nPage}
|
|
} {1}
|
|
|
|
# Ensure that nothing was written to the database while reclaiming
|
|
# memory from the pager in error state.
|
|
#
|
|
do_test ioerr5-1.$locking_mode-$iFail.4 {
|
|
set fd [open test.db]
|
|
fconfigure $fd -translation binary -encoding binary
|
|
set zDatabase2 [read $fd]
|
|
close $fd
|
|
expr {$zDatabase eq $zDatabase2}
|
|
} {1}
|
|
|
|
if {$rc eq [list 0 {}]} {
|
|
do_test ioerr5.1-$locking_mode-$iFail.3 {
|
|
execsql { SELECT count(*) FROM a }
|
|
} [expr $nRow+1]
|
|
break
|
|
}
|
|
}
|
|
}
|
|
|
|
# Make sure this test script doesn't leave any files open.
|
|
#
|
|
do_test ioerr5-1.X {
|
|
catch { db close }
|
|
catch { db2 close }
|
|
set sqlite_open_file_count
|
|
} 0
|
|
|
|
do_test ioerr5-2.0 {
|
|
sqlite3 db test.db
|
|
execsql { CREATE INDEX i1 ON a(id, name); }
|
|
} {}
|
|
|
|
foreach locking_mode {exclusive normal} {
|
|
for {set iFail 1} {$iFail<200} {incr iFail} {
|
|
sqlite3_soft_heap_limit 1048576
|
|
opendatabases
|
|
execsql { pragma locking_mode=exclusive }
|
|
set nRow [db one {SELECT count(*) FROM a}]
|
|
|
|
do_test ioerr5-2.$locking_mode-$iFail.1 {
|
|
execsql {
|
|
BEGIN EXCLUSIVE;
|
|
INSERT INTO a VALUES(1, 'ABCDEFGHIJKLMNOP');
|
|
}
|
|
} {}
|
|
|
|
set ::sqlite_io_error_persist 1
|
|
set ::sqlite_io_error_pending $iFail
|
|
|
|
sqlite3_release_memory 10000
|
|
|
|
set error_hit $::sqlite_io_error_hit
|
|
set ::sqlite_io_error_hit 0
|
|
set ::sqlite_io_error_persist 0
|
|
set ::sqlite_io_error_pending 0
|
|
if {$error_hit} {
|
|
do_test ioerr5-2.$locking_mode-$iFail.3a {
|
|
catchsql COMMIT
|
|
} {1 {disk I/O error}}
|
|
} else {
|
|
do_test ioerr5-2.$locking_mode-$iFail.3b {
|
|
execsql COMMIT
|
|
} {}
|
|
break
|
|
}
|
|
}
|
|
}
|
|
|
|
# Make sure this test script doesn't leave any files open.
|
|
#
|
|
do_test ioerr5-2.X {
|
|
catch { db close }
|
|
catch { db2 close }
|
|
set sqlite_open_file_count
|
|
} 0
|
|
|
|
sqlite3_enable_shared_cache $::enable_shared_cache
|
|
sqlite3_soft_heap_limit $::soft_limit
|
|
|
|
finish_test
|