summaryrefslogtreecommitdiffstats
path: root/test/thread1.test
diff options
context:
space:
mode:
Diffstat (limited to 'test/thread1.test')
-rw-r--r--test/thread1.test173
1 files changed, 173 insertions, 0 deletions
diff --git a/test/thread1.test b/test/thread1.test
new file mode 100644
index 0000000..0618f2c
--- /dev/null
+++ b/test/thread1.test
@@ -0,0 +1,173 @@
+# 2003 December 18
+#
+# 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. The
+# focus of this script is multithreading behavior
+#
+# $Id: thread1.test,v 1.8 2008/10/07 15:25:49 drh Exp $
+
+
+set testdir [file dirname $argv0]
+source $testdir/tester.tcl
+
+# Skip this whole file if the thread testing code is not enabled
+#
+if {[run_thread_tests]==0} { finish_test ; return }
+if {[llength [info command thread_step]]==0 || [sqlite3 -has-codec]} {
+ finish_test
+ return
+}
+
+# Create some data to work with
+#
+do_test thread1-1.1 {
+ execsql {
+ CREATE TABLE t1(a,b);
+ INSERT INTO t1 VALUES(1,'abcdefgh');
+ INSERT INTO t1 SELECT a+1, b||b FROM t1;
+ INSERT INTO t1 SELECT a+2, b||b FROM t1;
+ INSERT INTO t1 SELECT a+4, b||b FROM t1;
+ SELECT count(*), max(length(b)) FROM t1;
+ }
+} {8 64}
+
+# Interleave two threads on read access. Then make sure a third
+# thread can write the database. In other words:
+#
+# read-lock A
+# read-lock B
+# unlock A
+# unlock B
+# write-lock C
+#
+# At one point, the write-lock of C would fail on Linux.
+#
+do_test thread1-1.2 {
+ thread_create A test.db
+ thread_create B test.db
+ thread_create C test.db
+ thread_compile A {SELECT a FROM t1}
+ thread_step A
+ thread_result A
+} SQLITE_ROW
+do_test thread1-1.3 {
+ thread_argc A
+} 1
+do_test thread1-1.4 {
+ thread_argv A 0
+} 1
+do_test thread1-1.5 {
+ thread_compile B {SELECT b FROM t1}
+ thread_step B
+ thread_result B
+} SQLITE_ROW
+do_test thread1-1.6 {
+ thread_argc B
+} 1
+do_test thread1-1.7 {
+ thread_argv B 0
+} abcdefgh
+do_test thread1-1.8 {
+ thread_finalize A
+ thread_result A
+} SQLITE_OK
+do_test thread1-1.9 {
+ thread_finalize B
+ thread_result B
+} SQLITE_OK
+do_test thread1-1.10 {
+ thread_compile C {CREATE TABLE t2(x,y)}
+ thread_step C
+ thread_result C
+} SQLITE_DONE
+do_test thread1-1.11 {
+ thread_finalize C
+ thread_result C
+} SQLITE_OK
+do_test thread1-1.12 {
+ catchsql {SELECT name FROM sqlite_master}
+ execsql {SELECT name FROM sqlite_master}
+} {t1 t2}
+
+
+#
+# The following tests - thread1-2.* - test the following scenario:
+#
+# 1: Read-lock thread A
+# 2: Read-lock thread B
+# 3: Attempt to write in thread C -> SQLITE_BUSY
+# 4: Check db write failed from main thread.
+# 5: Unlock from thread A.
+# 6: Attempt to write in thread C -> SQLITE_BUSY
+# 7: Check db write failed from main thread.
+# 8: Unlock from thread B.
+# 9: Attempt to write in thread C -> SQLITE_DONE
+# 10: Finalize the write from thread C
+# 11: Check db write succeeded from main thread.
+#
+do_test thread1-2.1 {
+ thread_halt *
+ thread_create A test.db
+ thread_compile A {SELECT a FROM t1}
+ thread_step A
+ thread_result A
+} SQLITE_ROW
+do_test thread1-2.2 {
+ thread_create B test.db
+ thread_compile B {SELECT b FROM t1}
+ thread_step B
+ thread_result B
+} SQLITE_ROW
+do_test thread1-2.3 {
+ thread_create C test.db
+ thread_compile C {INSERT INTO t2 VALUES(98,99)}
+ thread_step C
+ thread_result C
+ thread_finalize C
+ thread_result C
+} SQLITE_BUSY
+
+do_test thread1-2.4 {
+ execsql {SELECT * FROM t2}
+} {}
+
+do_test thread1-2.5 {
+ thread_finalize A
+ thread_result A
+} SQLITE_OK
+do_test thread1-2.6 {
+ thread_compile C {INSERT INTO t2 VALUES(98,99)}
+ thread_step C
+ thread_result C
+ thread_finalize C
+ thread_result C
+} SQLITE_BUSY
+do_test thread1-2.7 {
+ execsql {SELECT * FROM t2}
+} {}
+do_test thread1-2.8 {
+ thread_finalize B
+ thread_result B
+} SQLITE_OK
+do_test thread1-2.9 {
+ thread_compile C {INSERT INTO t2 VALUES(98,99)}
+ thread_step C
+ thread_result C
+} SQLITE_DONE
+do_test thread1-2.10 {
+ thread_finalize C
+ thread_result C
+} SQLITE_OK
+do_test thread1-2.11 {
+ execsql {SELECT * FROM t2}
+} {98 99}
+
+thread_halt *
+finish_test