3 # The author disclaims copyright to this source code. In place of
4 # a legal notice, here is a blessing:
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.
10 #***********************************************************************
12 # This file contains tests of the memory allocation subsystem.
14 # $Id: memsubsys2.test,v 1.2 2008/08/12 15:21:12 drh Exp $
16 set testdir [file dirname $argv0]
17 source $testdir/tester.tcl
18 sqlite3_reset_auto_extension
20 # This procedure constructs a new database in test.db. It fills
21 # this database with many small records (enough to force multiple
22 # rebalance operations in the btree-layer and to require a large
23 # page cache), verifies correct results, then returns.
25 proc build_test_db {testname pragmas} {
27 forcedelete test.db test.db-journal
31 CREATE TABLE t1(x, y);
32 CREATE TABLE t2(a, b);
33 CREATE INDEX i1 ON t1(x,y);
34 INSERT INTO t1 VALUES(1, 100);
35 INSERT INTO t1 VALUES(2, 200);
37 for {set i 2} {$i<5000} {incr i $i} {
38 db eval {INSERT INTO t2 SELECT * FROM t1}
39 db eval {INSERT INTO t1 SELECT a+$i, a+b*100 FROM t2}
40 db eval {DELETE FROM t2}
43 db eval {SELECT count(*) FROM t1}
45 integrity_check $testname.2
48 # Reset all of the highwater marks.
50 proc reset_highwater_marks {} {
51 sqlite3_status SQLITE_STATUS_MEMORY_USED 1
52 sqlite3_status SQLITE_STATUS_MALLOC_SIZE 1
53 sqlite3_status SQLITE_STATUS_PAGECACHE_USED 1
54 sqlite3_status SQLITE_STATUS_PAGECACHE_OVERFLOW 1
55 sqlite3_status SQLITE_STATUS_PAGECACHE_SIZE 1
56 sqlite3_status SQLITE_STATUS_SCRATCH_USED 1
57 sqlite3_status SQLITE_STATUS_SCRATCH_OVERFLOW 1
58 sqlite3_status SQLITE_STATUS_SCRATCH_SIZE 1
59 sqlite3_status SQLITE_STATUS_PARSER_STACK 1
62 # Test 1: Verify that calling sqlite3_malloc(0) returns a NULL
65 set highwater [sqlite3_memory_highwater 0]
66 do_test memsubsys2-1.1 {
69 do_test memsubsys2-1.2 {
70 sqlite3_memory_highwater 0
74 # Test 2: Verify that the highwater mark increases after a large
77 sqlite3_memory_highwater 1
78 set highwater [sqlite3_memory_highwater 0]
79 do_test memsubsys2-2.1 {
80 sqlite3_free [set x [sqlite3_malloc 100000]]
83 do_test memsubsys2-2.2 {
84 expr {[sqlite3_memory_highwater 0]>=[sqlite3_memory_used]+$highwater}
87 # Test 3: Verify that turning of memstatus disables the statistics
92 sqlite3_config_memstatus 0
95 set highwater [sqlite3_memory_highwater 0]
96 do_test memsubsys2-3.1 {
99 do_test memsubsys2-3.2 {
102 do_test memsubsys2-3.3 {
103 sqlite3_memory_highwater 0
105 do_test memsubsys2-3.4 {
108 do_test memsubsys2-3.5 {
109 set ::allocation [sqlite3_malloc 100000]
110 expr {$::allocation!="0"}
112 do_test memsubsys2-3.6 {
113 sqlite3_memory_highwater 0
115 do_test memsubsys2-3.7 {
118 do_test memsubsys2-3.8 {
119 sqlite3_free $::allocation
121 do_test memsubsys2-3.9 {
126 # Test 4: Verify that turning on memstatus reenables the statistics
130 sqlite3_config_memstatus 1
132 reset_highwater_marks
133 set highwater [sqlite3_memory_highwater 0]
134 do_test memsubsys2-4.1 {
137 do_test memsubsys2-4.2 {
140 do_test memsubsys2-4.3 {
141 sqlite3_memory_highwater 0
143 do_test memsubsys2-4.4 {
146 do_test memsubsys2-4.5 {
147 set ::allocation [sqlite3_malloc 100000]
148 expr {$::allocation!="0"}
150 do_test memsubsys2-4.6 {
151 expr {[sqlite3_memory_highwater 0]>=100000}
153 do_test memsubsys2-4.7 {
154 expr {[sqlite3_memory_used]>=100000}
156 do_test memsubsys2-4.8 {
157 sqlite3_free $::allocation
159 do_test memsubsys2-4.9 {
162 do_test memsubsys2-4.10 {
163 expr {[sqlite3_memory_highwater 0]>=100000}
165 do_test memsubsys2-4.11 {
172 autoinstall_test_functions