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# 2008 June 18
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#
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# The author disclaims copyright to this source code. In place of
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# a legal notice, here is a blessing:
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#
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# May you do good and not evil.
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# May you find forgiveness for yourself and forgive others.
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# May you share freely, never taking more than you give.
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#
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#***********************************************************************
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#
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# This file contains tests of the memory allocation subsystem
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#
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# $Id: memsubsys1.test,v 1.12 2008/09/30 00:31:38 drh Exp $
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set testdir [file dirname $argv0]
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source $testdir/tester.tcl
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sqlite3_reset_auto_extension
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# This procedure constructs a new database in test.db. It fills
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# this database with many small records (enough to force multiple
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# rebalance operations in the btree-layer and to require a large
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# page cache), verifies correct results, then returns.
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#
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proc build_test_db {testname pragmas} {
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catch {db close}
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file delete -force test.db test.db-journal
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sqlite3 db test.db
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sqlite3_db_config_lookaside db 0 0 0
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db eval $pragmas
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db eval {
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CREATE TABLE t1(x, y);
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CREATE TABLE t2(a, b);
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CREATE INDEX i1 ON t1(x,y);
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INSERT INTO t1 VALUES(1, 100);
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INSERT INTO t1 VALUES(2, 200);
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}
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for {set i 2} {$i<5000} {incr i $i} {
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db eval {INSERT INTO t2 SELECT * FROM t1}
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db eval {INSERT INTO t1 SELECT a+$i, a+b*100 FROM t2}
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db eval {DELETE FROM t2}
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}
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do_test $testname.1 {
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db eval {SELECT count(*) FROM t1}
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} 8192
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integrity_check $testname.2
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}
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# Reset all of the highwater marks.
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#
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proc reset_highwater_marks {} {
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sqlite3_status SQLITE_STATUS_MEMORY_USED 1
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sqlite3_status SQLITE_STATUS_MALLOC_SIZE 1
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sqlite3_status SQLITE_STATUS_PAGECACHE_USED 1
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sqlite3_status SQLITE_STATUS_PAGECACHE_OVERFLOW 1
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sqlite3_status SQLITE_STATUS_PAGECACHE_SIZE 1
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sqlite3_status SQLITE_STATUS_SCRATCH_USED 1
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sqlite3_status SQLITE_STATUS_SCRATCH_OVERFLOW 1
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sqlite3_status SQLITE_STATUS_SCRATCH_SIZE 1
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sqlite3_status SQLITE_STATUS_PARSER_STACK 1
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}
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set xtra_size 256
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# Test 1: Both PAGECACHE and SCRATCH are shut down.
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#
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db close
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sqlite3_shutdown
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sqlite3_config_lookaside 0 0
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sqlite3_initialize
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reset_highwater_marks
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build_test_db memsubsys1-1 {PRAGMA page_size=1024}
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do_test memsubsys1-1.3 {
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set pg_used [lindex [sqlite3_status SQLITE_STATUS_PAGECACHE_USED 0] 2]
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} 0
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do_test memsubsys1-1.4 {
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set s_used [lindex [sqlite3_status SQLITE_STATUS_SCRATCH_USED 0] 2]
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} 0
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set max_pagecache [lindex [sqlite3_status SQLITE_STATUS_PAGECACHE_OVERFLOW 0] 2]
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#show_memstats
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# Test 2: Activate PAGECACHE with 20 pages
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#
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db close
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sqlite3_shutdown
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sqlite3_config_pagecache [expr 1024+$xtra_size] 20
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sqlite3_initialize
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reset_highwater_marks
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build_test_db memsubsys1-2 {PRAGMA page_size=1024}
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#show_memstats
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do_test memsubsys1-2.3 {
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set pg_ovfl [lindex [sqlite3_status SQLITE_STATUS_PAGECACHE_OVERFLOW 0] 2]
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set pg_used [lindex [sqlite3_status SQLITE_STATUS_PAGECACHE_USED 0] 2]
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expr {
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($pg_used*1024 + $pg_ovfl) < $max_pagecache &&
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($pg_used*(1024+$xtra_size) + $pg_ovfl) >= $max_pagecache
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}
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} 1
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do_test memsubsys1-2.4 {
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set pg_used [lindex [sqlite3_status SQLITE_STATUS_PAGECACHE_USED 0] 2]
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} 19
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do_test memsubsys1-2.5 {
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set s_used [lindex [sqlite3_status SQLITE_STATUS_SCRATCH_USED 0] 2]
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} 0
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# Test 3: Activate PAGECACHE with 20 pages but use the wrong page size
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# so that PAGECACHE is not used.
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#
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db close
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sqlite3_shutdown
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sqlite3_config_pagecache [expr 512+$xtra_size] 20
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sqlite3_initialize
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reset_highwater_marks
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build_test_db memsubsys1-3.1 {PRAGMA page_size=1024}
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#show_memstats
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do_test memsubsys1-3.1.3 {
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set pg_used [lindex [sqlite3_status SQLITE_STATUS_PAGECACHE_USED 0] 2]
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} 0
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do_test memsubsys1-3.1.4 {
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set overflow [lindex [sqlite3_status SQLITE_STATUS_PAGECACHE_OVERFLOW 0] 2]
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} $max_pagecache
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do_test memsubsys1-3.1.5 {
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set s_used [lindex [sqlite3_status SQLITE_STATUS_SCRATCH_USED 0] 2]
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} 0
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db close
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sqlite3_shutdown
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sqlite3_config_pagecache [expr 2048+$xtra_size] 20
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sqlite3_initialize
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reset_highwater_marks
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build_test_db memsubsys1-3.2 {PRAGMA page_size=2048}
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#show_memstats
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do_test memsubsys1-3.2.3 {
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db eval {PRAGMA page_size}
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} 2048
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do_test memsubsys1-3.2.4 {
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set pg_used [lindex [sqlite3_status SQLITE_STATUS_PAGECACHE_USED 0] 2]
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} 19
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do_test memsubsys1-3.2.5 {
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set s_used [lindex [sqlite3_status SQLITE_STATUS_SCRATCH_USED 0] 2]
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} 0
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# Test 4: Activate both PAGECACHE and SCRATCH.
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#
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db close
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sqlite3_shutdown
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sqlite3_config_pagecache [expr 1024+$xtra_size] 50
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sqlite3_config_scratch 6000 2
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sqlite3_initialize
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reset_highwater_marks
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build_test_db memsubsys1-4 {PRAGMA page_size=1024}
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#show_memstats
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do_test memsubsys1-4.3 {
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set pg_used [lindex [sqlite3_status SQLITE_STATUS_PAGECACHE_USED 0] 2]
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} 49
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do_test memsubsys1-4.4 {
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set pg_ovfl [lindex [sqlite3_status SQLITE_STATUS_PAGECACHE_OVERFLOW 0] 2]
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set pg_used [lindex [sqlite3_status SQLITE_STATUS_PAGECACHE_USED 0] 2]
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expr {
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($pg_used*1024 + $pg_ovfl) < $max_pagecache &&
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($pg_used*(1024+$xtra_size) + $pg_ovfl) >= $max_pagecache
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}
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} 1
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do_test memsubsys1-4.5 {
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set maxreq [lindex [sqlite3_status SQLITE_STATUS_MALLOC_SIZE 0] 2]
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expr {$maxreq<7000}
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} 1
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do_test memsubsys1-4.6 {
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set s_used [lindex [sqlite3_status SQLITE_STATUS_SCRATCH_USED 0] 2]
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} 1
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# Test 5: Activate both PAGECACHE and SCRATCH. But make the page size
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# such that the SCRATCH allocations are too small.
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#
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db close
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sqlite3_shutdown
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sqlite3_config_pagecache [expr 4096+$xtra_size] 24
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sqlite3_config_scratch 6000 2
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sqlite3_initialize
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reset_highwater_marks
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build_test_db memsubsys1-5 {PRAGMA page_size=4096}
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#show_memstats
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do_test memsubsys1-5.3 {
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set pg_used [lindex [sqlite3_status SQLITE_STATUS_PAGECACHE_USED 0] 2]
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} 23
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do_test memsubsys1-5.4 {
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set maxreq [lindex [sqlite3_status SQLITE_STATUS_MALLOC_SIZE 0] 2]
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expr {$maxreq>4096}
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} 1
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do_test memsubsys1-5.5 {
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set s_used [lindex [sqlite3_status SQLITE_STATUS_SCRATCH_USED 0] 2]
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} 0
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do_test memsubsys1-5.6 {
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set s_ovfl [lindex [sqlite3_status SQLITE_STATUS_SCRATCH_OVERFLOW 0] 2]
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expr {$s_ovfl>6000}
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} 1
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# Test 6: Activate both PAGECACHE and SCRATCH with a 4k page size.
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# Make it so that SCRATCH is large enough
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#
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db close
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sqlite3_shutdown
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sqlite3_config_pagecache [expr 4096+$xtra_size] 24
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sqlite3_config_scratch 25000 1
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sqlite3_initialize
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reset_highwater_marks
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build_test_db memsubsys1-6 {PRAGMA page_size=4096}
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#show_memstats
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do_test memsubsys1-6.3 {
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set pg_used [lindex [sqlite3_status SQLITE_STATUS_PAGECACHE_USED 0] 2]
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} 23
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do_test memsubsys1-6.4 {
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set maxreq [lindex [sqlite3_status SQLITE_STATUS_MALLOC_SIZE 0] 2]
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expr {$maxreq>4096 && $maxreq<=(4096+$xtra_size)}
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} 1
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do_test memsubsys1-6.5 {
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set s_used [lindex [sqlite3_status SQLITE_STATUS_SCRATCH_USED 0] 2]
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} 1
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do_test memsubsys1-6.6 {
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set s_ovfl [lindex [sqlite3_status SQLITE_STATUS_SCRATCH_OVERFLOW 0] 2]
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} 0
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# Test 7: Activate both PAGECACHE and SCRATCH with a 4k page size.
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# Set cache_size small so that no PAGECACHE overflow occurs. Verify
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# that maximum allocation size is small.
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#
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db close
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sqlite3_shutdown
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sqlite3_config_pagecache [expr 4096+$xtra_size] 24
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sqlite3_config_scratch 25000 1
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sqlite3_initialize
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reset_highwater_marks
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build_test_db memsubsys1-7 {
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PRAGMA page_size=4096;
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PRAGMA cache_size=10;
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PRAGMA temp_store=memory;
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}
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#show_memstats
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do_test memsubsys1-7.3 {
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set pg_used [lindex [sqlite3_status SQLITE_STATUS_PAGECACHE_USED 0] 2]
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expr {$pg_used<24}
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} 1
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do_test memsubsys1-7.4 {
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set pg_ovfl [lindex [sqlite3_status SQLITE_STATUS_PAGECACHE_OVERFLOW 0] 2]
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} 0
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do_test memsubsys1-7.5 {
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set maxreq [lindex [sqlite3_status SQLITE_STATUS_MALLOC_SIZE 0] 2]
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expr {$maxreq<4000}
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} 1
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do_test memsubsys1-7.6 {
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set s_used [lindex [sqlite3_status SQLITE_STATUS_SCRATCH_USED 0] 2]
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} 1
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do_test memsubsys1-7.7 {
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set s_ovfl [lindex [sqlite3_status SQLITE_STATUS_SCRATCH_OVERFLOW 0] 2]
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} 0
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db close
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sqlite3_shutdown
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sqlite3_config_pagecache 0 0
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sqlite3_config_scratch 0 0
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sqlite3_config_lookaside 100 500
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sqlite3_initialize
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262 |
autoinstall_test_functions
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263 |
finish_test
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