sl@0: # 2008 June 18
sl@0: #
sl@0: # The author disclaims copyright to this source code.  In place of
sl@0: # a legal notice, here is a blessing:
sl@0: #
sl@0: #    May you do good and not evil.
sl@0: #    May you find forgiveness for yourself and forgive others.
sl@0: #    May you share freely, never taking more than you give.
sl@0: #
sl@0: #***********************************************************************
sl@0: #
sl@0: # This file contains tests of the memory allocation subsystem.
sl@0: #
sl@0: # $Id: memsubsys2.test,v 1.2 2008/08/12 15:21:12 drh Exp $
sl@0: 
sl@0: set testdir [file dirname $argv0]
sl@0: source $testdir/tester.tcl
sl@0: sqlite3_reset_auto_extension
sl@0: 
sl@0: # This procedure constructs a new database in test.db.  It fills
sl@0: # this database with many small records (enough to force multiple
sl@0: # rebalance operations in the btree-layer and to require a large
sl@0: # page cache), verifies correct results, then returns.
sl@0: #
sl@0: proc build_test_db {testname pragmas} {
sl@0:   catch {db close}
sl@0:   file delete -force test.db test.db-journal
sl@0:   sqlite3 db test.db
sl@0:   db eval $pragmas
sl@0:   db eval {
sl@0:     CREATE TABLE t1(x, y);
sl@0:     CREATE TABLE t2(a, b);
sl@0:     CREATE INDEX i1 ON t1(x,y);
sl@0:     INSERT INTO t1 VALUES(1, 100);
sl@0:     INSERT INTO t1 VALUES(2, 200);
sl@0:   }
sl@0:   for {set i 2} {$i<5000} {incr i $i} {
sl@0:     db eval {INSERT INTO t2 SELECT * FROM t1}
sl@0:     db eval {INSERT INTO t1 SELECT a+$i, a+b*100 FROM t2}
sl@0:     db eval {DELETE FROM t2}
sl@0:   }
sl@0:   do_test $testname.1 {
sl@0:     db eval {SELECT count(*) FROM t1}
sl@0:   } 8192
sl@0:   integrity_check $testname.2
sl@0: }
sl@0: 
sl@0: # Reset all of the highwater marks.
sl@0: #
sl@0: proc reset_highwater_marks {} {
sl@0:   sqlite3_status SQLITE_STATUS_MEMORY_USED 1
sl@0:   sqlite3_status SQLITE_STATUS_MALLOC_SIZE 1
sl@0:   sqlite3_status SQLITE_STATUS_PAGECACHE_USED 1
sl@0:   sqlite3_status SQLITE_STATUS_PAGECACHE_OVERFLOW 1
sl@0:   sqlite3_status SQLITE_STATUS_PAGECACHE_SIZE 1
sl@0:   sqlite3_status SQLITE_STATUS_SCRATCH_USED 1
sl@0:   sqlite3_status SQLITE_STATUS_SCRATCH_OVERFLOW 1
sl@0:   sqlite3_status SQLITE_STATUS_SCRATCH_SIZE 1
sl@0:   sqlite3_status SQLITE_STATUS_PARSER_STACK 1
sl@0: }
sl@0: 
sl@0: # Test 1:  Verify that calling sqlite3_malloc(0) returns a NULL
sl@0: # pointer.
sl@0: #
sl@0: set highwater [sqlite3_memory_highwater 0]
sl@0: do_test memsubsys2-1.1 {
sl@0:   sqlite3_malloc 0
sl@0: } {0}
sl@0: do_test memsubsys2-1.2 {
sl@0:   sqlite3_memory_highwater 0
sl@0: } $highwater
sl@0: 
sl@0: 
sl@0: # Test 2:  Verify that the highwater mark increases after a large
sl@0: # allocation.
sl@0: #
sl@0: sqlite3_memory_highwater 1
sl@0: set highwater [sqlite3_memory_highwater 0]
sl@0: do_test memsubsys2-2.1 {
sl@0:   sqlite3_free [set x [sqlite3_malloc 100000]]
sl@0:   expr {$x!="0"}
sl@0: } {1}
sl@0: do_test memsubsys2-2.2 {
sl@0:   expr {[sqlite3_memory_highwater 0]>=[sqlite3_memory_used]+$highwater}
sl@0: } {1}
sl@0: 
sl@0: # Test 3: Verify that turning of memstatus disables the statistics
sl@0: # tracking.
sl@0: #
sl@0: db close
sl@0: sqlite3_shutdown
sl@0: sqlite3_config_memstatus 0
sl@0: sqlite3_initialize
sl@0: reset_highwater_marks
sl@0: set highwater [sqlite3_memory_highwater 0]
sl@0: do_test memsubsys2-3.1 {
sl@0:   set highwater
sl@0: } {0}
sl@0: do_test memsubsys2-3.2 {
sl@0:   sqlite3_malloc 0
sl@0: } {0}
sl@0: do_test memsubsys2-3.3 {
sl@0:   sqlite3_memory_highwater 0
sl@0: } {0}
sl@0: do_test memsubsys2-3.4 {
sl@0:   sqlite3_memory_used
sl@0: } {0}
sl@0: do_test memsubsys2-3.5 {
sl@0:   set ::allocation [sqlite3_malloc 100000]
sl@0:   expr {$::allocation!="0"}
sl@0: } {1}
sl@0: do_test memsubsys2-3.6 {
sl@0:   sqlite3_memory_highwater 0
sl@0: } {0}
sl@0: do_test memsubsys2-3.7 {
sl@0:   sqlite3_memory_used
sl@0: } {0}
sl@0: do_test memsubsys2-3.8 {
sl@0:   sqlite3_free $::allocation
sl@0: } {}
sl@0: do_test memsubsys2-3.9 {
sl@0:   sqlite3_free 0
sl@0: } {}
sl@0:   
sl@0: 
sl@0: # Test 4: Verify that turning on memstatus reenables the statistics
sl@0: # tracking.
sl@0: #
sl@0: sqlite3_shutdown
sl@0: sqlite3_config_memstatus 1
sl@0: sqlite3_initialize
sl@0: reset_highwater_marks
sl@0: set highwater [sqlite3_memory_highwater 0]
sl@0: do_test memsubsys2-4.1 {
sl@0:   set highwater
sl@0: } {0}
sl@0: do_test memsubsys2-4.2 {
sl@0:   sqlite3_malloc 0
sl@0: } {0}
sl@0: do_test memsubsys2-4.3 {
sl@0:   sqlite3_memory_highwater 0
sl@0: } {0}
sl@0: do_test memsubsys2-4.4 {
sl@0:   sqlite3_memory_used
sl@0: } {0}
sl@0: do_test memsubsys2-4.5 {
sl@0:   set ::allocation [sqlite3_malloc 100000]
sl@0:   expr {$::allocation!="0"}
sl@0: } {1}
sl@0: do_test memsubsys2-4.6 {
sl@0:   expr {[sqlite3_memory_highwater 0]>=100000}
sl@0: } {1}
sl@0: do_test memsubsys2-4.7 {
sl@0:   expr {[sqlite3_memory_used]>=100000}
sl@0: } {1}
sl@0: do_test memsubsys2-4.8 {
sl@0:   sqlite3_free $::allocation
sl@0: } {}
sl@0: do_test memsubsys2-4.9 {
sl@0:   sqlite3_free 0
sl@0: } {}
sl@0: do_test memsubsys2-4.10 {
sl@0:   expr {[sqlite3_memory_highwater 0]>=100000}
sl@0: } {1}
sl@0: do_test memsubsys2-4.11 {
sl@0:   sqlite3_memory_used
sl@0: } {0}
sl@0:   
sl@0: 
sl@0: 
sl@0: 
sl@0: autoinstall_test_functions
sl@0: finish_test