mirror of
https://github.com/tursodatabase/libsql.git
synced 2024-11-23 13:16:16 +00:00
115 lines
2.9 KiB
Plaintext
115 lines
2.9 KiB
Plaintext
# 2015 Mar 17
|
|
#
|
|
# 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 $testdir/wal_common.tcl
|
|
|
|
finish_test; return; # Feature currently not implemented.
|
|
ifcapable !wal {finish_test ; return }
|
|
if {$::tcl_platform(platform)!="unix"} { finish_test ; return }
|
|
set testprefix walblock
|
|
|
|
catch { db close }
|
|
testvfs tvfs -fullshm 1
|
|
foreach f [glob test.db*] { forcedelete $f }
|
|
|
|
sqlite3 db test.db -vfs tvfs
|
|
do_execsql_test 1.1.0 {
|
|
CREATE TABLE t1(x, y);
|
|
INSERT INTO t1 VALUES(1, 2);
|
|
INSERT INTO t1 VALUES(3, 4);
|
|
INSERT INTO t1 VALUES(5, 6);
|
|
PRAGMA journal_mode = wal;
|
|
INSERT INTO t1 VALUES(7, 8);
|
|
} {wal}
|
|
|
|
do_test 1.1.1 {
|
|
lsort [glob test.db*]
|
|
} {test.db test.db-shm test.db-wal}
|
|
|
|
do_test 1.1.2 {
|
|
set C [launch_testfixture]
|
|
testfixture $C {
|
|
sqlite3 db test.db
|
|
db eval { SELECT * FROM t1 }
|
|
}
|
|
} {1 2 3 4 5 6 7 8}
|
|
|
|
do_test 1.1.3 {
|
|
set ::out [list]
|
|
testfixture $C {
|
|
db eval { SELECT * FROM t1 }
|
|
} [list set ::out]
|
|
set ::out
|
|
} {}
|
|
|
|
do_test 1.1.4 {
|
|
vwait ::out
|
|
set ::out
|
|
} {1 2 3 4 5 6 7 8}
|
|
|
|
#
|
|
# Test that if a read client cannot read the wal-index header because a
|
|
# write client is in the middle of updating it, the reader blocks until
|
|
# the writer finishes.
|
|
#
|
|
# 1. Open a write transaction using client [db] in this process.
|
|
#
|
|
# 2. Attempt to commit the write transaction. Intercept the xShmBarrier()
|
|
# call made by the writer between updating the two copies of the
|
|
# wal-index header.
|
|
#
|
|
# 3. Within the xShmBarrier() callback, make an asynchronous request to
|
|
# the other process to read from the database. It should block, as it
|
|
# cannot get read the wal-index header.
|
|
#
|
|
# 4. Still in xShmBarrier(), wait for 5 seconds. Check that the other
|
|
# process has not answered the request.
|
|
#
|
|
# 5: Finish committing the transaction. Then wait for 0.5 seconds more.
|
|
# Ensure that the second process has by this stage read the database
|
|
# and that the snapshot it read included the transaction committed in
|
|
# step (4).
|
|
#
|
|
do_execsql_test 1.2.1 {
|
|
BEGIN;
|
|
INSERT INTO t1 VALUES(9, 10);
|
|
} {}
|
|
|
|
tvfs script barrier_callback
|
|
tvfs filter xShmBarrier
|
|
proc barrier_callback {method args} {
|
|
set ::out ""
|
|
testfixture $::C { db eval { SELECT * FROM t1 } } {set ::out}
|
|
|
|
do_test "1.2.2.(blocking 10 seconds)" {
|
|
set ::continue 0
|
|
after 10000 {set ::continue 1}
|
|
vwait ::continue
|
|
set ::out
|
|
} {}
|
|
}
|
|
|
|
execsql COMMIT
|
|
|
|
do_test "1.2.3.(blocking 0.5 seconds)" {
|
|
set ::continue 0
|
|
after 500 {set ::continue 1}
|
|
vwait ::continue
|
|
set ::out
|
|
} {1 2 3 4 5 6 7 8 9 10}
|
|
|
|
|
|
finish_test
|