database/sqlite
1
0
Fork 0
mirror of https://github.com/sqlite/sqlite.git synced 2025-07-27 20:41:58 +03:00
Code Activity

Handle some of the IO error conditions that may occur in a shared-cache context. (CVS 2980)

Browse Source 
FossilOrigin-Name: 97491d4eb5fc24d8f5cc7605db844359ecc6a818
This commit is contained in:
danielk1977
2006-01-20 10:55:05 +00:00
parent f98477b846
commit 07cb560b23
10 changed files with 337 additions and 107 deletions
Download Patch File Download Diff File Expand all files Collapse all files

137
test/shared_err.test Normal file
View File

@ -0,0 +1,137 @@
# 2005 December 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.
#
#***********************************************************************
#
# The focus of the tests in this file are IO errors that occur in a shared
# cache context. What happens to connection B if one connection A encounters
# an IO-error whilst reading or writing the file-system?
#
# $Id: shared_err.test,v 1.1 2006/01/20 10:55:05 danielk1977 Exp $
proc skip {args} {}
set testdir [file dirname $argv0]
source $testdir/tester.tcl
db close
ifcapable !shared_cache||!subquery {
finish_test
return
}
set ::enable_shared_cache [sqlite3_enable_shared_cache 1]
skip \
do_ioerr_test shared_ioerr-1 -tclprep {
sqlite3 db2 test.db
execsql {
PRAGMA read_uncommitted = 1;
CREATE TABLE t1(a,b,c);
BEGIN;
SELECT * FROM sqlite_master;
} db2
} -sqlbody {
SELECT * FROM sqlite_master;
INSERT INTO t1 VALUES(1,2,3);
BEGIN TRANSACTION;
INSERT INTO t1 VALUES(1,2,3);
INSERT INTO t1 VALUES(4,5,6);
ROLLBACK;
SELECT * FROM t1;
BEGIN TRANSACTION;
INSERT INTO t1 VALUES(1,2,3);
INSERT INTO t1 VALUES(4,5,6);
COMMIT;
SELECT * FROM t1;
DELETE FROM t1 WHERE a<100;
} -cleanup {
do_test shared_ioerr-$n.cleanup.1 {
set res [catchsql {
SELECT * FROM t1;
} db2]
set possible_results [list \
"1 {disk I/O error}" \
"0 {1 2 3}" \
"0 {1 2 3 1 2 3 4 5 6}" \
"0 {1 2 3 1 2 3 4 5 6 1 2 3 4 5 6}" \
"0 {}" \
]
set rc [expr [lsearch -exact $possible_results $res] >= 0]
if {$rc != 1} {
puts ""
puts "Result: $res"
}
set rc
} {1}
db2 close
}
do_ioerr_test shared_ioerr-2 -tclprep {
sqlite3 db2 test.db
execsql {
PRAGMA read_uncommitted = 1;
BEGIN;
CREATE TABLE t1(a, b);
INSERT INTO t1(oid) VALUES(NULL);
INSERT INTO t1(oid) SELECT NULL FROM t1;
INSERT INTO t1(oid) SELECT NULL FROM t1;
INSERT INTO t1(oid) SELECT NULL FROM t1;
INSERT INTO t1(oid) SELECT NULL FROM t1;
INSERT INTO t1(oid) SELECT NULL FROM t1;
INSERT INTO t1(oid) SELECT NULL FROM t1;
INSERT INTO t1(oid) SELECT NULL FROM t1;
INSERT INTO t1(oid) SELECT NULL FROM t1;
INSERT INTO t1(oid) SELECT NULL FROM t1;
INSERT INTO t1(oid) SELECT NULL FROM t1;
UPDATE t1 set a = oid, b = 'abcdefghijklmnopqrstuvwxyz0123456789';
CREATE INDEX i1 ON t1(a);
COMMIT;
BEGIN;
SELECT * FROM sqlite_master;
} db2
} -tclbody {
set ::residx 0
execsql {DELETE FROM t1 WHERE 0 = (a % 2);}
incr ::residx
# When this transaction begins the table contains 512 entries. The
# two statements together add 512+146 more if it succeeds.
# (1024/7==146)
execsql {BEGIN;}
execsql {INSERT INTO t1 SELECT a+1, b FROM t1;}
execsql {INSERT INTO t1 SELECT 'string' || a, b FROM t1 WHERE 0 = (a%7);}
execsql {COMMIT;}
incr ::residx
} -cleanup {
do_test shared_ioerr-2.$n.cleanup.1 {
set res [catchsql {
SELECT max(a), min(a), count(*) FROM (SELECT a FROM t1 order by a);
} db2]
set possible_results [list \
{0 {1024 1 1024}} \
{0 {1023 1 512}} \
{0 {string994 1 1170}} \
]
set idx [lsearch -exact $possible_results $res]
set success [expr {$idx==$::residx || $res=="1 {disk I/O error}"}]
if {!$success} {
puts ""
puts "Result: \"$res\" ($::residx)"
}
set success
} {1}
db2 close
}
catch {db close}
sqlite3_enable_shared_cache $::enable_shared_cache
finish_test