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 test cases for sqlite3_db_release_memory and
13 # the PRAGMA shrink_memory statement.
16 set testdir [file dirname $argv0]
17 source $testdir/tester.tcl
18 test_set_config_pagecache 0 0
20 unset -nocomplain baseline
23 PRAGMA cache_size = 2000;
25 INSERT INTO t1 VALUES(randomblob(1000000),1);
27 set ::baseline [sqlite3_memory_used]
28 # EVIDENCE-OF: R-58814-63508 The sqlite3_db_release_memory(D) interface
29 # attempts to free as much heap memory as possible from database
31 sqlite3_db_release_memory db
32 expr {$::baseline > [sqlite3_memory_used]+500000}
35 set baseline [sqlite3_memory_used]
39 expr {$::baseline+500000 < [sqlite3_memory_used]}
42 set baseline [sqlite3_memory_used]
43 db eval {PRAGMA shrink_memory}
44 expr {$::baseline > [sqlite3_memory_used]+500000}
47 test_restore_config_pagecache