mirror of
https://github.com/tursodatabase/libsql.git
synced 2024-12-15 14:29:44 +00:00
113 lines
3.6 KiB
Plaintext
113 lines
3.6 KiB
Plaintext
# 2009 April 10
|
|
#
|
|
# 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.
|
|
#
|
|
# This file implements tests to verify that ticket #3793 has been
|
|
# fixed.
|
|
#
|
|
|
|
|
|
set testdir [file dirname $argv0]
|
|
source $testdir/tester.tcl
|
|
|
|
ifcapable !shared_cache||!attach {
|
|
finish_test
|
|
return
|
|
}
|
|
set ::enable_shared_cache [sqlite3_enable_shared_cache 1]
|
|
|
|
do_test tkt3793-1.1 {
|
|
db close
|
|
sqlite3 db "file:test.db" -uri 1
|
|
sqlite3 db1 "file:test.db?cache=private" -uri 1
|
|
sqlite3 db2 "file:test.db?cache=shared" -uri 1
|
|
execsql {
|
|
BEGIN;
|
|
CREATE TABLE t1(a, b);
|
|
CREATE TABLE t2(a PRIMARY KEY, b);
|
|
INSERT INTO t1 VALUES(randstr(50,50), randstr(50,50));
|
|
INSERT INTO t1 SELECT randstr(50,50), randstr(50,50) FROM t1;
|
|
INSERT INTO t1 SELECT randstr(50,50), randstr(50,50) FROM t1;
|
|
INSERT INTO t1 SELECT randstr(50,50), randstr(50,50) FROM t1;
|
|
INSERT INTO t1 SELECT randstr(50,50), randstr(50,50) FROM t1;
|
|
INSERT INTO t1 SELECT randstr(50,50), randstr(50,50) FROM t1;
|
|
INSERT INTO t1 SELECT randstr(50,50), randstr(50,50) FROM t1;
|
|
INSERT INTO t1 SELECT randstr(50,50), randstr(50,50) FROM t1;
|
|
INSERT INTO t1 SELECT randstr(50,50), randstr(50,50) FROM t1;
|
|
INSERT INTO t1 SELECT randstr(50,50), randstr(50,50) FROM t1;
|
|
INSERT INTO t1 SELECT randstr(50,50), randstr(50,50) FROM t1;
|
|
INSERT INTO t2 SELECT * FROM t1;
|
|
COMMIT;
|
|
}
|
|
} {}
|
|
|
|
proc busyhandler {db args} { set ::busyconnection $db ; return 1 }
|
|
db2 busy {busyhandler db2}
|
|
db1 busy {busyhandler db1}
|
|
|
|
# Establish a read-lock on the database file using connection [db].
|
|
#
|
|
do_test tkt3793-1.2 {
|
|
execsql {
|
|
BEGIN;
|
|
SELECT count(*) FROM t1;
|
|
}
|
|
} {1024}
|
|
|
|
# Set the size of the cache shared by [db1] and [db2] to 10. Then update
|
|
# more than 10 pages of table t1. At this point the shared-cache will
|
|
# hold a RESERVED lock on the database file. Even though there are now
|
|
# more than 10 dirty pages in memory, it cannot upgrade to an EXCLUSIVE
|
|
# lock because of the read-lock held by [db].
|
|
#
|
|
do_test tkt3793-1.3 {
|
|
execsql {
|
|
PRAGMA cache_size = 10;
|
|
BEGIN;
|
|
UPDATE t1 SET b = randstr(50,50);
|
|
} db1
|
|
} {}
|
|
|
|
set x 0
|
|
|
|
# Run one SELECT query on the shared-cache using [db1], then from within
|
|
# the callback run another via [db2]. Because of the large number of dirty
|
|
# pages within the cache, each time a new page is read from the database
|
|
# SQLite will attempt to upgrade to an EXCLUSIVE lock, and hence invoke
|
|
# the busy-handler. The tests here verify that the correct busy-handler
|
|
# function is invoked (the busy-handler associated with the database
|
|
# connection that called sqlite3_step()). When bug #3793 existed, sometimes
|
|
# the [db2] busy-handler was invoked from within the call to sqlite3_step()
|
|
# associated with [db1].
|
|
#
|
|
# Note: Before the bug was fixed, if [db2] was opened with the "-fullmutex 1"
|
|
# option, then this test case would cause an assert() to fail.
|
|
#
|
|
ifcapable threadsafe {
|
|
set ::busyconnection db1
|
|
db1 eval {SELECT * FROM t2 ORDER BY a LIMIT 20} {
|
|
do_test tkt3793-2.[incr x] { set ::busyconnection } db1
|
|
set ::busyconnection db2
|
|
|
|
db2 eval { SELECT count(*) FROM t2 }
|
|
do_test tkt3793-2.[incr x] { set ::busyconnection } db2
|
|
set ::busyconnection db1
|
|
}
|
|
}
|
|
|
|
do_test tkt3793-3 {
|
|
db1 close
|
|
db2 close
|
|
} {}
|
|
|
|
sqlite3_enable_shared_cache $::enable_shared_cache
|
|
finish_test
|