Annotation of embedaddon/sqlite3/test/thread1.test, revision 1.1.1.1
1.1 misho 1: # 2003 December 18
2: #
3: # The author disclaims copyright to this source code. In place of
4: # a legal notice, here is a blessing:
5: #
6: # May you do good and not evil.
7: # May you find forgiveness for yourself and forgive others.
8: # May you share freely, never taking more than you give.
9: #
10: #***********************************************************************
11: # This file implements regression tests for SQLite library. The
12: # focus of this script is multithreading behavior
13: #
14: # $Id: thread1.test,v 1.8 2008/10/07 15:25:49 drh Exp $
15:
16:
17: set testdir [file dirname $argv0]
18: source $testdir/tester.tcl
19:
20: # Skip this whole file if the thread testing code is not enabled
21: #
22: if {[run_thread_tests]==0} { finish_test ; return }
23: if {[llength [info command thread_step]]==0 || [sqlite3 -has-codec]} {
24: finish_test
25: return
26: }
27:
28: # Create some data to work with
29: #
30: do_test thread1-1.1 {
31: execsql {
32: CREATE TABLE t1(a,b);
33: INSERT INTO t1 VALUES(1,'abcdefgh');
34: INSERT INTO t1 SELECT a+1, b||b FROM t1;
35: INSERT INTO t1 SELECT a+2, b||b FROM t1;
36: INSERT INTO t1 SELECT a+4, b||b FROM t1;
37: SELECT count(*), max(length(b)) FROM t1;
38: }
39: } {8 64}
40:
41: # Interleave two threads on read access. Then make sure a third
42: # thread can write the database. In other words:
43: #
44: # read-lock A
45: # read-lock B
46: # unlock A
47: # unlock B
48: # write-lock C
49: #
50: # At one point, the write-lock of C would fail on Linux.
51: #
52: do_test thread1-1.2 {
53: thread_create A test.db
54: thread_create B test.db
55: thread_create C test.db
56: thread_compile A {SELECT a FROM t1}
57: thread_step A
58: thread_result A
59: } SQLITE_ROW
60: do_test thread1-1.3 {
61: thread_argc A
62: } 1
63: do_test thread1-1.4 {
64: thread_argv A 0
65: } 1
66: do_test thread1-1.5 {
67: thread_compile B {SELECT b FROM t1}
68: thread_step B
69: thread_result B
70: } SQLITE_ROW
71: do_test thread1-1.6 {
72: thread_argc B
73: } 1
74: do_test thread1-1.7 {
75: thread_argv B 0
76: } abcdefgh
77: do_test thread1-1.8 {
78: thread_finalize A
79: thread_result A
80: } SQLITE_OK
81: do_test thread1-1.9 {
82: thread_finalize B
83: thread_result B
84: } SQLITE_OK
85: do_test thread1-1.10 {
86: thread_compile C {CREATE TABLE t2(x,y)}
87: thread_step C
88: thread_result C
89: } SQLITE_DONE
90: do_test thread1-1.11 {
91: thread_finalize C
92: thread_result C
93: } SQLITE_OK
94: do_test thread1-1.12 {
95: catchsql {SELECT name FROM sqlite_master}
96: execsql {SELECT name FROM sqlite_master}
97: } {t1 t2}
98:
99:
100: #
101: # The following tests - thread1-2.* - test the following scenario:
102: #
103: # 1: Read-lock thread A
104: # 2: Read-lock thread B
105: # 3: Attempt to write in thread C -> SQLITE_BUSY
106: # 4: Check db write failed from main thread.
107: # 5: Unlock from thread A.
108: # 6: Attempt to write in thread C -> SQLITE_BUSY
109: # 7: Check db write failed from main thread.
110: # 8: Unlock from thread B.
111: # 9: Attempt to write in thread C -> SQLITE_DONE
112: # 10: Finalize the write from thread C
113: # 11: Check db write succeeded from main thread.
114: #
115: do_test thread1-2.1 {
116: thread_halt *
117: thread_create A test.db
118: thread_compile A {SELECT a FROM t1}
119: thread_step A
120: thread_result A
121: } SQLITE_ROW
122: do_test thread1-2.2 {
123: thread_create B test.db
124: thread_compile B {SELECT b FROM t1}
125: thread_step B
126: thread_result B
127: } SQLITE_ROW
128: do_test thread1-2.3 {
129: thread_create C test.db
130: thread_compile C {INSERT INTO t2 VALUES(98,99)}
131: thread_step C
132: thread_result C
133: thread_finalize C
134: thread_result C
135: } SQLITE_BUSY
136:
137: do_test thread1-2.4 {
138: execsql {SELECT * FROM t2}
139: } {}
140:
141: do_test thread1-2.5 {
142: thread_finalize A
143: thread_result A
144: } SQLITE_OK
145: do_test thread1-2.6 {
146: thread_compile C {INSERT INTO t2 VALUES(98,99)}
147: thread_step C
148: thread_result C
149: thread_finalize C
150: thread_result C
151: } SQLITE_BUSY
152: do_test thread1-2.7 {
153: execsql {SELECT * FROM t2}
154: } {}
155: do_test thread1-2.8 {
156: thread_finalize B
157: thread_result B
158: } SQLITE_OK
159: do_test thread1-2.9 {
160: thread_compile C {INSERT INTO t2 VALUES(98,99)}
161: thread_step C
162: thread_result C
163: } SQLITE_DONE
164: do_test thread1-2.10 {
165: thread_finalize C
166: thread_result C
167: } SQLITE_OK
168: do_test thread1-2.11 {
169: execsql {SELECT * FROM t2}
170: } {98 99}
171:
172: thread_halt *
173: finish_test
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