375 lines
11 KiB
Plaintext
375 lines
11 KiB
Plaintext
# 2010 March 10
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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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# Tests for the sqlite3_db_status() function
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#
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set testdir [file dirname $argv0]
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source $testdir/tester.tcl
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ifcapable !compound {
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finish_test
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return
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}
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# Memory statistics must be enabled for this test.
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db close
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sqlite3_shutdown
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sqlite3_config_memstatus 1
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sqlite3_initialize
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sqlite3 db test.db
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# Make sure sqlite3_db_config() and sqlite3_db_status are working.
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#
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unset -nocomplain PAGESZ
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unset -nocomplain BASESZ
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do_test dbstatus-1.1 {
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db close
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sqlite3 db :memory:
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db eval {
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CREATE TABLE t1(x);
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}
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set sz1 [lindex [sqlite3_db_status db SQLITE_DBSTATUS_CACHE_USED 0] 1]
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db eval {
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CREATE TABLE t2(y);
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}
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set sz2 [lindex [sqlite3_db_status db SQLITE_DBSTATUS_CACHE_USED 0] 1]
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set ::PAGESZ [expr {$sz2-$sz1}]
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set ::BASESZ [expr {$sz1-$::PAGESZ}]
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expr {$::PAGESZ>1024 && $::PAGESZ<1300}
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} {1}
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do_test dbstatus-1.2 {
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db eval {
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INSERT INTO t1 VALUES(zeroblob(9000));
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}
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lindex [sqlite3_db_status db SQLITE_DBSTATUS_CACHE_USED 0] 1
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} [expr {$BASESZ + 10*$PAGESZ}]
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proc lookaside {db} {
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expr { $::lookaside_buffer_size *
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[lindex [sqlite3_db_status $db SQLITE_DBSTATUS_LOOKASIDE_USED 0] 1]
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}
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}
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ifcapable stat3 {
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set STAT3 1
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} else {
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set STAT3 0
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}
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ifcapable malloc_usable_size {
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finish_test
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return
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}
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#---------------------------------------------------------------------------
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# Run the dbstatus-2 and dbstatus-3 tests with several of different
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# lookaside buffer sizes.
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#
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foreach ::lookaside_buffer_size {0 64 120} {
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# Do not run any of these tests if there is SQL configured to run
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# as part of the [sqlite3] command. This prevents the script from
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# configuring the size of the lookaside buffer after [sqlite3] has
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# returned.
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if {[presql] != ""} break
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#-------------------------------------------------------------------------
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# Tests for SQLITE_DBSTATUS_SCHEMA_USED.
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#
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# Each test in the following block works as follows. Each test uses a
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# different database schema.
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#
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# 1. Open a connection to an empty database. Disable statement caching.
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#
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# 2. Execute the SQL to create the database schema. Measure the total
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# heap and lookaside memory allocated by SQLite, and the memory
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# allocated for the database schema according to sqlite3_db_status().
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#
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# 3. Drop all tables in the database schema. Measure the total memory
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# and the schema memory again.
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#
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# 4. Repeat step 2.
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#
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# 5. Repeat step 3.
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#
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# Then test that:
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#
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# a) The difference in schema memory quantities in steps 2 and 3 is the
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# same as the difference in total memory in steps 2 and 3.
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#
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# b) Step 4 reports the same amount of schema and total memory used as
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# in step 2.
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#
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# c) Step 5 reports the same amount of schema and total memory used as
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# in step 3.
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#
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foreach {tn schema} {
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1 { CREATE TABLE t1(a, b) }
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2 { CREATE TABLE t1(a PRIMARY KEY, b REFERENCES t1, c UNIQUE) }
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3 {
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CREATE TABLE t1(a, b);
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CREATE INDEX i1 ON t1(a, b);
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}
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4 {
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CREATE TABLE t1(a, b);
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CREATE TABLE t2(c, d);
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CREATE TRIGGER AFTER INSERT ON t1 BEGIN
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INSERT INTO t2 VALUES(new.a, new.b);
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SELECT * FROM t1, t2 WHERE a=c AND b=d GROUP BY b HAVING a>5 ORDER BY a;
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END;
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}
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5 {
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CREATE TABLE t1(a, b);
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CREATE TABLE t2(c, d);
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CREATE VIEW v1 AS SELECT * FROM t1 UNION SELECT * FROM t2;
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}
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6y {
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CREATE TABLE t1(a, b);
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CREATE INDEX i1 ON t1(a);
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CREATE INDEX i2 ON t1(a,b);
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CREATE INDEX i3 ON t1(b,b);
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INSERT INTO t1 VALUES(randomblob(20), randomblob(25));
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INSERT INTO t1 SELECT randomblob(20), randomblob(25) FROM t1;
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INSERT INTO t1 SELECT randomblob(20), randomblob(25) FROM t1;
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INSERT INTO t1 SELECT randomblob(20), randomblob(25) FROM t1;
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ANALYZE;
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}
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7 {
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CREATE TABLE t1(a, b);
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CREATE TABLE t2(c, d);
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CREATE VIEW v1 AS
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SELECT * FROM t1
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UNION
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SELECT * FROM t2
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UNION ALL
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SELECT c||b, d||a FROM t2 LEFT OUTER JOIN t1 GROUP BY c, d
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ORDER BY 1, 2
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;
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CREATE TRIGGER tr1 INSTEAD OF INSERT ON v1 BEGIN
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SELECT * FROM v1;
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UPDATE t1 SET a=5, b=(SELECT c FROM t2);
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END;
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SELECT * FROM v1;
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}
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8x {
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CREATE TABLE t1(a, b, UNIQUE(a, b));
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CREATE VIRTUAL TABLE t2 USING echo(t1);
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}
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} {
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set tn "$::lookaside_buffer_size-$tn"
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# Step 1.
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db close
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forcedelete test.db
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sqlite3 db test.db
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sqlite3_db_config_lookaside db 0 $::lookaside_buffer_size 500
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db cache size 0
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catch { register_echo_module db }
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ifcapable !vtab { if {[string match *x $tn]} continue }
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# Step 2.
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execsql $schema
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set nAlloc1 [lindex [sqlite3_status SQLITE_STATUS_MEMORY_USED 0] 1]
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incr nAlloc1 [lookaside db]
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set nSchema1 [lindex [sqlite3_db_status db SQLITE_DBSTATUS_SCHEMA_USED 0] 1]
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# Step 3.
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drop_all_tables
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set nAlloc2 [lindex [sqlite3_status SQLITE_STATUS_MEMORY_USED 0] 1]
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incr nAlloc2 [lookaside db]
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set nSchema2 [lindex [sqlite3_db_status db SQLITE_DBSTATUS_SCHEMA_USED 0] 1]
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# Step 4.
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execsql $schema
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set nAlloc3 [lindex [sqlite3_status SQLITE_STATUS_MEMORY_USED 0] 1]
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incr nAlloc3 [lookaside db]
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set nSchema3 [lindex [sqlite3_db_status db SQLITE_DBSTATUS_SCHEMA_USED 0] 1]
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# Step 5.
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drop_all_tables
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set nAlloc4 [lindex [sqlite3_status SQLITE_STATUS_MEMORY_USED 0] 1]
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incr nAlloc4 [lookaside db]
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set nSchema4 [lindex [sqlite3_db_status db SQLITE_DBSTATUS_SCHEMA_USED 0] 1]
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set nFree [expr {$nAlloc1-$nAlloc2}]
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# Tests for which the test name ends in an "x" report slightly less
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# memory than is actually freed when all schema items are finalized.
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# This is because memory allocated by virtual table implementations
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# for any reason is not counted as "schema memory".
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#
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# Additionally, in auto-vacuum mode, dropping tables and indexes causes
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# the page-cache to shrink. So the amount of memory freed is always
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# much greater than just that reported by DBSTATUS_SCHEMA_USED in this
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# case.
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#
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# Some of the memory used for sqlite_stat3 is unaccounted for by
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# dbstatus.
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#
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# Finally, on osx the estimate of memory used by the schema may be
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# slightly low.
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#
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if {[string match *x $tn] || $AUTOVACUUM
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|| ([string match *y $tn] && $STAT3)
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|| ($::tcl_platform(os) == "Darwin")
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} {
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do_test dbstatus-2.$tn.ax { expr {($nSchema1-$nSchema2)<=$nFree} } 1
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} else {
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do_test dbstatus-2.$tn.a { expr {$nSchema1-$nSchema2} } $nFree
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}
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do_test dbstatus-2.$tn.b { list $nAlloc1 $nSchema1 } "$nAlloc3 $nSchema3"
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do_test dbstatus-2.$tn.c { list $nAlloc2 $nSchema2 } "$nAlloc4 $nSchema4"
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}
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#-------------------------------------------------------------------------
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# Tests for SQLITE_DBSTATUS_STMT_USED.
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#
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# Each test in the following block works as follows. Each test uses a
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# different database schema.
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#
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# 1. Open a connection to an empty database. Initialized the database
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# schema.
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#
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# 2. Prepare a bunch of SQL statements. Measure the total heap and
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# lookaside memory allocated by SQLite, and the memory allocated
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# for the prepared statements according to sqlite3_db_status().
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#
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# 3. Finalize all prepared statements Measure the total memory
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# and the prepared statement memory again.
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#
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# 4. Repeat step 2.
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#
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# 5. Repeat step 3.
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#
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# Then test that:
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#
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# a) The difference in schema memory quantities in steps 2 and 3 is the
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# same as the difference in total memory in steps 2 and 3.
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#
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# b) Step 4 reports the same amount of schema and total memory used as
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# in step 2.
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#
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# c) Step 5 reports the same amount of schema and total memory used as
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# in step 3.
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#
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foreach {tn schema statements} {
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1 { CREATE TABLE t1(a, b) } {
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SELECT * FROM t1;
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INSERT INTO t1 VALUES(1, 2);
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INSERT INTO t1 SELECT * FROM t1;
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UPDATE t1 SET a=5;
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DELETE FROM t1;
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}
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2 {
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PRAGMA recursive_triggers = 1;
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CREATE TABLE t1(a, b);
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CREATE TRIGGER tr1 AFTER INSERT ON t1 WHEN (new.a>0) BEGIN
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INSERT INTO t1 VALUES(new.a-1, new.b);
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END;
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} {
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INSERT INTO t1 VALUES(5, 'x');
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}
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3 {
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PRAGMA recursive_triggers = 1;
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CREATE TABLE t1(a, b);
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CREATE TABLE t2(a, b);
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CREATE TRIGGER tr1 AFTER INSERT ON t1 WHEN (new.a>0) BEGIN
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INSERT INTO t2 VALUES(new.a-1, new.b);
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END;
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CREATE TRIGGER tr2 AFTER INSERT ON t1 WHEN (new.a>0) BEGIN
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INSERT INTO t1 VALUES(new.a-1, new.b);
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END;
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} {
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INSERT INTO t1 VALUES(10, 'x');
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}
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4 {
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CREATE TABLE t1(a, b);
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} {
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SELECT count(*) FROM t1 WHERE upper(a)='ABC';
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}
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5x {
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CREATE TABLE t1(a, b UNIQUE);
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CREATE VIRTUAL TABLE t2 USING echo(t1);
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} {
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SELECT count(*) FROM t2;
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SELECT * FROM t2 WHERE b>5;
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SELECT * FROM t2 WHERE b='abcdefg';
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}
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} {
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set tn "$::lookaside_buffer_size-$tn"
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# Step 1.
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db close
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forcedelete test.db
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sqlite3 db test.db
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sqlite3_db_config_lookaside db 0 $::lookaside_buffer_size 500
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db cache size 1000
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catch { register_echo_module db }
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ifcapable !vtab { if {[string match *x $tn]} continue }
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execsql $schema
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db cache flush
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# Step 2.
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execsql $statements
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set nAlloc1 [lindex [sqlite3_status SQLITE_STATUS_MEMORY_USED 0] 1]
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incr nAlloc1 [lookaside db]
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set nStmt1 [lindex [sqlite3_db_status db SQLITE_DBSTATUS_STMT_USED 0] 1]
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execsql $statements
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# Step 3.
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db cache flush
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set nAlloc2 [lindex [sqlite3_status SQLITE_STATUS_MEMORY_USED 0] 1]
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incr nAlloc2 [lookaside db]
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set nStmt2 [lindex [sqlite3_db_status db SQLITE_DBSTATUS_STMT_USED 0] 1]
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# Step 3.
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execsql $statements
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set nAlloc3 [lindex [sqlite3_status SQLITE_STATUS_MEMORY_USED 0] 1]
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incr nAlloc3 [lookaside db]
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set nStmt3 [lindex [sqlite3_db_status db SQLITE_DBSTATUS_STMT_USED 0] 1]
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execsql $statements
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# Step 4.
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db cache flush
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set nAlloc4 [lindex [sqlite3_status SQLITE_STATUS_MEMORY_USED 0] 1]
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incr nAlloc4 [lookaside db]
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set nStmt4 [lindex [sqlite3_db_status db SQLITE_DBSTATUS_STMT_USED 0] 1]
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set nFree [expr {$nAlloc1-$nAlloc2}]
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do_test dbstatus-3.$tn.a { expr $nStmt2 } {0}
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# Tests for which the test name ends in an "x" report slightly less
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# memory than is actually freed when all statements are finalized.
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# This is because a small amount of memory allocated by a virtual table
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# implementation using sqlite3_mprintf() is technically considered
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# external and so is not counted as "statement memory".
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#
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#puts "$nStmt1 $nFree"
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if {[string match *x $tn]} {
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do_test dbstatus-3.$tn.bx { expr $nStmt1<=$nFree } {1}
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} else {
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do_test dbstatus-3.$tn.b { expr $nStmt1==$nFree } {1}
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}
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do_test dbstatus-3.$tn.c { list $nAlloc1 $nStmt1 } [list $nAlloc3 $nStmt3]
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do_test dbstatus-3.$tn.d { list $nAlloc2 $nStmt2 } [list $nAlloc4 $nStmt4]
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}
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}
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finish_test
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