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Diffstat (limited to 'components/external/SQLite-3.8.1/test/malloc5.test')
| -rw-r--r-- | components/external/SQLite-3.8.1/test/malloc5.test | 395 |
1 files changed, 0 insertions, 395 deletions
diff --git a/components/external/SQLite-3.8.1/test/malloc5.test b/components/external/SQLite-3.8.1/test/malloc5.test deleted file mode 100644 index 6abedf79e1..0000000000 --- a/components/external/SQLite-3.8.1/test/malloc5.test +++ /dev/null @@ -1,395 +0,0 @@ -# 2005 November 30 -# -# The author disclaims copyright to this source code. In place of -# a legal notice, here is a blessing: -# -# May you do good and not evil. -# May you find forgiveness for yourself and forgive others. -# May you share freely, never taking more than you give. -# -#*********************************************************************** -# -# This file contains test cases focused on the two memory-management APIs, -# sqlite3_soft_heap_limit() and sqlite3_release_memory(). -# -# Prior to version 3.6.2, calling sqlite3_release_memory() or exceeding -# the configured soft heap limit could cause sqlite to upgrade database -# locks and flush dirty pages to the file system. As of 3.6.2, this is -# no longer the case. In version 3.6.2, sqlite3_release_memory() only -# reclaims clean pages. This test file has been updated accordingly. -# -# $Id: malloc5.test,v 1.22 2009/04/11 19:09:54 drh Exp $ - -set testdir [file dirname $argv0] -source $testdir/tester.tcl -source $testdir/malloc_common.tcl -db close - -# Only run these tests if memory debugging is turned on. -# -if {!$MEMDEBUG} { - puts "Skipping malloc5 tests: not compiled with -DSQLITE_MEMDEBUG..." - finish_test - return -} - -# Skip these tests if OMIT_MEMORY_MANAGEMENT was defined at compile time. -ifcapable !memorymanage { - finish_test - return -} - -sqlite3_soft_heap_limit 0 -sqlite3 db test.db - -do_test malloc5-1.1 { - # Simplest possible test. Call sqlite3_release_memory when there is exactly - # one unused page in a single pager cache. The page cannot be freed, as - # it is dirty. So sqlite3_release_memory() returns 0. - # - execsql { - PRAGMA auto_vacuum=OFF; - BEGIN; - CREATE TABLE abc(a, b, c); - } - sqlite3_release_memory -} {0} - -do_test malloc5-1.2 { - # Test that the transaction started in the above test is still active. - # The lock on the database file should not have been upgraded (this was - # not the case before version 3.6.2). - # - sqlite3 db2 test.db - execsql { SELECT * FROM sqlite_master } db2 -} {} -do_test malloc5-1.3 { - # Call [sqlite3_release_memory] when there is exactly one unused page - # in the cache belonging to db2. - # - set ::pgalloc [sqlite3_release_memory] - expr $::pgalloc > 0 -} {1} - -do_test malloc5-1.4 { - # Commit the transaction and open a new one. Read 1 page into the cache. - # Because the page is not dirty, it is eligible for collection even - # before the transaction is concluded. - # - execsql { - COMMIT; - BEGIN; - SELECT * FROM abc; - } - sqlite3_release_memory -} $::pgalloc - -do_test malloc5-1.5 { - # Conclude the transaction opened in the previous [do_test] block. This - # causes another page (page 1) to become eligible for recycling. - # - execsql { COMMIT } - sqlite3_release_memory -} $::pgalloc - -do_test malloc5-1.6 { - # Manipulate the cache so that it contains two unused pages. One requires - # a journal-sync to free, the other does not. - db2 close - execsql { - BEGIN; - SELECT * FROM abc; - CREATE TABLE def(d, e, f); - } - sqlite3_release_memory 500 -} $::pgalloc - -do_test malloc5-1.7 { - # Database should not be locked this time. - sqlite3 db2 test.db - catchsql { SELECT * FROM abc } db2 -} {0 {}} -do_test malloc5-1.8 { - # Try to release another block of memory. This will fail as the only - # pages currently in the cache are dirty (page 3) or pinned (page 1). - db2 close - sqlite3_release_memory 500 -} 0 -do_test malloc5-1.8 { - # Database is still not locked. - # - sqlite3 db2 test.db - catchsql { SELECT * FROM abc } db2 -} {0 {}} -do_test malloc5-1.9 { - execsql { - COMMIT; - } -} {} - -do_test malloc5-2.1 { - # Put some data in tables abc and def. Both tables are still wholly - # contained within their root pages. - execsql { - INSERT INTO abc VALUES(1, 2, 3); - INSERT INTO abc VALUES(4, 5, 6); - INSERT INTO def VALUES(7, 8, 9); - INSERT INTO def VALUES(10,11,12); - } -} {} -do_test malloc5-2.2 { - # Load the root-page for table def into the cache. Then query table abc. - # Halfway through the query call sqlite3_release_memory(). The goal of this - # test is to make sure we don't free pages that are in use (specifically, - # the root of table abc). - sqlite3_release_memory - set nRelease 0 - execsql { - BEGIN; - SELECT * FROM def; - } - set data [list] - db eval {SELECT * FROM abc} { - incr nRelease [sqlite3_release_memory] - lappend data $a $b $c - } - execsql { - COMMIT; - } - list $nRelease $data -} [list $pgalloc [list 1 2 3 4 5 6]] - -do_test malloc5-3.1 { - # Simple test to show that if two pagers are opened from within this - # thread, memory is freed from both when sqlite3_release_memory() is - # called. - execsql { - BEGIN; - SELECT * FROM abc; - } - execsql { - SELECT * FROM sqlite_master; - BEGIN; - SELECT * FROM def; - } db2 - sqlite3_release_memory -} [expr $::pgalloc * 2] -do_test malloc5-3.2 { - concat \ - [execsql {SELECT * FROM abc; COMMIT}] \ - [execsql {SELECT * FROM def; COMMIT} db2] -} {1 2 3 4 5 6 7 8 9 10 11 12} - -db2 close -puts "Highwater mark: [sqlite3_memory_highwater]" - -# The following two test cases each execute a transaction in which -# 10000 rows are inserted into table abc. The first test case is used -# to ensure that more than 1MB of dynamic memory is used to perform -# the transaction. -# -# The second test case sets the "soft-heap-limit" to 100,000 bytes (0.1 MB) -# and tests to see that this limit is not exceeded at any point during -# transaction execution. -# -# Before executing malloc5-4.* we save the value of the current soft heap -# limit in variable ::soft_limit. The original value is restored after -# running the tests. -# -set ::soft_limit [sqlite3_soft_heap_limit -1] -execsql {PRAGMA cache_size=2000} -do_test malloc5-4.1 { - execsql {BEGIN;} - execsql {DELETE FROM abc;} - for {set i 0} {$i < 10000} {incr i} { - execsql "INSERT INTO abc VALUES($i, $i, '[string repeat X 100]');" - } - execsql {COMMIT;} - db cache flush - sqlite3_release_memory - sqlite3_memory_highwater 1 - execsql {SELECT * FROM abc} - set nMaxBytes [sqlite3_memory_highwater 1] - puts -nonewline " (Highwater mark: $nMaxBytes) " - expr $nMaxBytes > 1000000 -} {1} -do_test malloc5-4.2 { - db cache flush - sqlite3_release_memory - sqlite3_soft_heap_limit 100000 - sqlite3_memory_highwater 1 - execsql {SELECT * FROM abc} - set nMaxBytes [sqlite3_memory_highwater 1] - puts -nonewline " (Highwater mark: $nMaxBytes) " - expr $nMaxBytes <= 110000 -} {1} -do_test malloc5-4.3 { - # Check that the content of table abc is at least roughly as expected. - execsql { - SELECT count(*), sum(a), sum(b) FROM abc; - } -} [list 10000 [expr int(10000.0 * 4999.5)] [expr int(10000.0 * 4999.5)]] - -# Restore the soft heap limit. -sqlite3_soft_heap_limit $::soft_limit - -# Test that there are no problems calling sqlite3_release_memory when -# there are open in-memory databases. -# -# At one point these tests would cause a seg-fault. -# -do_test malloc5-5.1 { - db close - sqlite3 db :memory: - execsql { - BEGIN; - CREATE TABLE abc(a, b, c); - INSERT INTO abc VALUES('abcdefghi', 1234567890, NULL); - INSERT INTO abc SELECT * FROM abc; - INSERT INTO abc SELECT * FROM abc; - INSERT INTO abc SELECT * FROM abc; - INSERT INTO abc SELECT * FROM abc; - INSERT INTO abc SELECT * FROM abc; - INSERT INTO abc SELECT * FROM abc; - INSERT INTO abc SELECT * FROM abc; - } - sqlite3_release_memory -} 0 -do_test malloc5-5.2 { - sqlite3_soft_heap_limit 5000 - execsql { - COMMIT; - PRAGMA temp_store = memory; - SELECT * FROM abc ORDER BY a; - } - expr 1 -} {1} -sqlite3_soft_heap_limit $::soft_limit - -#------------------------------------------------------------------------- -# The following test cases (malloc5-6.*) test the new global LRU list -# used to determine the pages to recycle when sqlite3_release_memory is -# called and there is more than one pager open. -# -proc nPage {db} { - set bt [btree_from_db $db] - array set stats [btree_pager_stats $bt] - set stats(page) -} -db close -forcedelete test.db test.db-journal test2.db test2.db-journal - -# This block of test-cases (malloc5-6.1.*) prepares two database files -# for the subsequent tests. -do_test malloc5-6.1.1 { - sqlite3 db test.db - execsql { - PRAGMA page_size=1024; - PRAGMA default_cache_size=10; - } - execsql { - PRAGMA temp_store = memory; - BEGIN; - CREATE TABLE abc(a PRIMARY KEY, b, c); - INSERT INTO abc VALUES(randstr(50,50), randstr(75,75), randstr(100,100)); - INSERT INTO abc - SELECT randstr(50,50), randstr(75,75), randstr(100,100) FROM abc; - INSERT INTO abc - SELECT randstr(50,50), randstr(75,75), randstr(100,100) FROM abc; - INSERT INTO abc - SELECT randstr(50,50), randstr(75,75), randstr(100,100) FROM abc; - INSERT INTO abc - SELECT randstr(50,50), randstr(75,75), randstr(100,100) FROM abc; - INSERT INTO abc - SELECT randstr(50,50), randstr(75,75), randstr(100,100) FROM abc; - INSERT INTO abc - SELECT randstr(50,50), randstr(75,75), randstr(100,100) FROM abc; - COMMIT; - } - forcecopy test.db test2.db - sqlite3 db2 test2.db - list \ - [expr ([file size test.db]/1024)>20] [expr ([file size test2.db]/1024)>20] -} {1 1} -do_test malloc5-6.1.2 { - list [execsql {PRAGMA cache_size}] [execsql {PRAGMA cache_size} db2] -} {10 10} - -do_test malloc5-6.2.1 { - execsql {SELECT * FROM abc} db2 - execsql {SELECT * FROM abc} db - expr [nPage db] + [nPage db2] -} {20} - -do_test malloc5-6.2.2 { - # If we now try to reclaim some memory, it should come from the db2 cache. - sqlite3_release_memory 3000 - expr [nPage db] + [nPage db2] -} {17} -do_test malloc5-6.2.3 { - # Access the db2 cache again, so that all the db2 pages have been used - # more recently than all the db pages. Then try to reclaim 3000 bytes. - # This time, 3 pages should be pulled from the db cache. - execsql { SELECT * FROM abc } db2 - sqlite3_release_memory 3000 - expr [nPage db] + [nPage db2] -} {17} - -do_test malloc5-6.3.1 { - # Now open a transaction and update 2 pages in the db2 cache. Then - # do a SELECT on the db cache so that all the db pages are more recently - # used than the db2 pages. When we try to free memory, SQLite should - # free the non-dirty db2 pages, then the db pages, then finally use - # sync() to free up the dirty db2 pages. The only page that cannot be - # freed is page1 of db2. Because there is an open transaction, the - # btree layer holds a reference to page 1 in the db2 cache. - execsql { - BEGIN; - UPDATE abc SET c = randstr(100,100) - WHERE rowid = 1 OR rowid = (SELECT max(rowid) FROM abc); - } db2 - execsql { SELECT * FROM abc } db - expr [nPage db] + [nPage db2] -} {20} -do_test malloc5-6.3.2 { - # Try to release 7700 bytes. This should release all the - # non-dirty pages held by db2. - sqlite3_release_memory [expr 7*1132] - list [nPage db] [nPage db2] -} {10 3} -do_test malloc5-6.3.3 { - # Try to release another 1000 bytes. This should come fromt the db - # cache, since all three pages held by db2 are either in-use or diry. - sqlite3_release_memory 1000 - list [nPage db] [nPage db2] -} {9 3} -do_test malloc5-6.3.4 { - # Now release 9900 more (about 9 pages worth). This should expunge - # the rest of the db cache. But the db2 cache remains intact, because - # SQLite tries to avoid calling sync(). - if {$::tcl_platform(wordSize)==8} { - sqlite3_release_memory 10500 - } else { - sqlite3_release_memory 9900 - } - list [nPage db] [nPage db2] -} {0 3} -do_test malloc5-6.3.5 { - # But if we are really insistent, SQLite will consent to call sync() - # if there is no other option. UPDATE: As of 3.6.2, SQLite will not - # call sync() in this scenario. So no further memory can be reclaimed. - sqlite3_release_memory 1000 - list [nPage db] [nPage db2] -} {0 3} -do_test malloc5-6.3.6 { - # The referenced page (page 1 of the db2 cache) will not be freed no - # matter how much memory we ask for: - sqlite3_release_memory 31459 - list [nPage db] [nPage db2] -} {0 3} - -db2 close - -sqlite3_soft_heap_limit $::soft_limit -finish_test -catch {db close} |