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Fix a memory leak that can occur in os_unix.c if an IO error occurs within the xUnlock method.

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FossilOrigin-Name: 6c5c04eea1f0e8d61883ee8675c249fbf895dc01
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dan
2010-06-16 10:55:42 +00:00
parent a4a9095ec0
commit b0ac3e3a17
8 changed files with 247 additions and 69 deletions
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119
test/pagerfault.test Normal file
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# 2010 June 15
#
# 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.
#
#***********************************************************************
#
set testdir [file dirname $argv0]
source $testdir/tester.tcl
source $testdir/lock_common.tcl
source $testdir/malloc_common.tcl
set a_string_counter 1
proc a_string {n} {
global a_string_counter
incr a_string_counter
string range [string repeat "${a_string_counter}." $n] 1 $n
}
db func a_string a_string
#-------------------------------------------------------------------------
# Test fault-injection while rolling back a hot-journal file.
#
do_test pagerfault-1-pre1 {
execsql {
PRAGMA journal_mode = DELETE;
PRAGMA cache_size = 10;
CREATE TABLE t1(a UNIQUE, b UNIQUE);
INSERT INTO t1 VALUES(a_string(200), a_string(300));
INSERT INTO t1 SELECT a_string(200), a_string(300) FROM t1;
INSERT INTO t1 SELECT a_string(200), a_string(300) FROM t1;
BEGIN;
INSERT INTO t1 SELECT a_string(201), a_string(301) FROM t1;
INSERT INTO t1 SELECT a_string(202), a_string(302) FROM t1;
INSERT INTO t1 SELECT a_string(203), a_string(303) FROM t1;
INSERT INTO t1 SELECT a_string(204), a_string(304) FROM t1;
}
faultsim_save_and_close
} {}
do_faultsim_test pagerfault-1 -prep {
faultsim_restore_and_reopen
} -body {
execsql { SELECT count(*) FROM t1 }
} -test {
faultsim_test_result {0 4}
faultsim_integrity_check
if {[db one { SELECT count(*) FROM t1 }] != 4} {
error "Database content appears incorrect"
}
}
#-------------------------------------------------------------------------
# Test fault-injection while rolling back hot-journals that were created
# as part of a multi-file transaction.
#
do_test pagerfault-2-pre1 {
testvfs tstvfs -default 1
tstvfs filter xDelete
tstvfs script xDeleteCallback
proc xDeleteCallback {method file args} {
set file [file tail $file]
if { [string match *mj* $file] } { faultsim_save }
}
faultsim_delete_and_reopen
db func a_string a_string
execsql {
ATTACH 'test.db2' AS aux;
PRAGMA journal_mode = DELETE;
PRAGMA main.cache_size = 10;
PRAGMA aux.cache_size = 10;
CREATE TABLE t1(a UNIQUE, b UNIQUE);
CREATE TABLE aux.t2(a UNIQUE, b UNIQUE);
INSERT INTO t1 VALUES(a_string(200), a_string(300));
INSERT INTO t1 SELECT a_string(200), a_string(300) FROM t1;
INSERT INTO t1 SELECT a_string(200), a_string(300) FROM t1;
INSERT INTO t2 SELECT * FROM t1;
BEGIN;
INSERT INTO t1 SELECT a_string(201), a_string(301) FROM t1;
INSERT INTO t1 SELECT a_string(202), a_string(302) FROM t1;
INSERT INTO t1 SELECT a_string(203), a_string(303) FROM t1;
INSERT INTO t1 SELECT a_string(204), a_string(304) FROM t1;
REPLACE INTO t2 SELECT * FROM t1;
COMMIT;
}
db close
tstvfs delete
} {}
do_faultsim_test pagerfault-2 -faults ioerr-persistent -prep {
faultsim_restore_and_reopen
} -body {
execsql {
ATTACH 'test.db2' AS aux;
SELECT count(*) FROM t2;
SELECT count(*) FROM t1;
}
} -test {
faultsim_test_result {0 {4 4}} {1 {unable to open database: test.db2}}
faultsim_integrity_check
catchsql { ATTACH 'test.db2' AS aux }
if {[db one { SELECT count(*) FROM t1 }] != 4
|| [db one { SELECT count(*) FROM t2 }] != 4
} {
error "Database content appears incorrect"
}
}
finish_test