367 lines
9.3 KiB
Plaintext
367 lines
9.3 KiB
Plaintext
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# 2005 March 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 attempts to check that the library can recover from a malloc()
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# failure when sqlite3_global_recover() is invoked.
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#
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# (Later:) The sqlite3_global_recover() interface is now a no-op.
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# Recovery from malloc() failures is automatic. But we keep these
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# tests around because you can never have too many test cases.
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#
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# $Id: malloc2.test,v 1.8 2007/10/03 08:46:45 danielk1977 Exp $
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set testdir [file dirname $argv0]
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source $testdir/tester.tcl
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# Only run these tests if memory debugging is turned on.
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#
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ifcapable !memdebug {
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puts "Skipping malloc tests: not compiled with -DSQLITE_MEMDEBUG..."
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finish_test
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return
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}
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sqlite3_extended_result_codes db 1
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# Generate a checksum based on the contents of the database. If the
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# checksum of two databases is the same, and the integrity-check passes
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# for both, the two databases are identical.
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#
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proc cksum {db} {
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set ret [list]
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ifcapable tempdb {
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set sql {
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SELECT name FROM sqlite_master WHERE type = 'table' UNION
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SELECT name FROM sqlite_temp_master WHERE type = 'table' UNION
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SELECT 'sqlite_master' UNION
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SELECT 'sqlite_temp_master'
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}
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} else {
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set sql {
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SELECT name FROM sqlite_master WHERE type = 'table' UNION
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SELECT 'sqlite_master'
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}
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}
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set tbllist [$db eval $sql]
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set txt {}
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foreach tbl $tbllist {
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append txt [$db eval "SELECT * FROM $tbl"]
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}
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# puts txt=$txt
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return [md5 $txt]
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}
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proc do_malloc2_test {tn args} {
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array set ::mallocopts $args
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set sum [cksum db]
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for {set ::n 1} {true} {incr ::n} {
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# Run the SQL. Malloc number $::n is set to fail. A malloc() failure
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# may or may not be reported.
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sqlite3_memdebug_fail $::n -repeat 1
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do_test malloc2-$tn.$::n.2 {
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set res [catchsql [string trim $::mallocopts(-sql)]]
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set rc [expr {
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0==[string compare $res {1 {out of memory}}] ||
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[db errorcode] == 3082 ||
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0==[lindex $res 0]
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}]
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if {$rc!=1} {
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puts "Error: $res"
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}
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set rc
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} {1}
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# If $::n is greater than the number of malloc() calls required to
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# execute the SQL, then this test is finished. Break out of the loop.
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set nFail [sqlite3_memdebug_fail -1]
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if {$nFail==0} break
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# Nothing should work now, because the allocator should refuse to
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# allocate any memory.
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#
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# Update: SQLite now automatically recovers from a malloc() failure.
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# So the statement in the test below would work.
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if 0 {
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do_test malloc2-$tn.$::n.3 {
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catchsql {SELECT 'nothing should work'}
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} {1 {out of memory}}
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}
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# Recover from the malloc failure.
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#
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# Update: The new malloc() failure handling means that a transaction may
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# still be active even if a malloc() has failed. But when these tests were
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# written this was not the case. So do a manual ROLLBACK here so that the
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# tests pass.
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do_test malloc2-$tn.$::n.4 {
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sqlite3_global_recover
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catch {
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execsql {
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ROLLBACK;
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}
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}
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expr 0
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} {0}
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# Checksum the database.
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do_test malloc2-$tn.$::n.5 {
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cksum db
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} $sum
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integrity_check malloc2-$tn.$::n.6
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if {$::nErr>1} return
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}
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unset ::mallocopts
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}
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do_test malloc2.1.setup {
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execsql {
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CREATE TABLE abc(a, b, c);
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INSERT INTO abc VALUES(10, 20, 30);
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INSERT INTO abc VALUES(40, 50, 60);
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CREATE INDEX abc_i ON abc(a, b, c);
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}
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} {}
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do_malloc2_test 1.1 -sql {
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SELECT * FROM abc;
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}
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do_malloc2_test 1.2 -sql {
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UPDATE abc SET c = c+10;
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}
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do_malloc2_test 1.3 -sql {
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INSERT INTO abc VALUES(70, 80, 90);
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}
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do_malloc2_test 1.4 -sql {
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DELETE FROM abc;
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}
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do_test malloc2.1.5 {
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execsql {
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SELECT * FROM abc;
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}
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} {}
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do_test malloc2.2.setup {
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execsql {
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CREATE TABLE def(a, b, c);
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CREATE INDEX def_i1 ON def(a);
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CREATE INDEX def_i2 ON def(c);
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BEGIN;
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}
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for {set i 0} {$i<20} {incr i} {
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execsql {
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INSERT INTO def VALUES(randstr(300,300),randstr(300,300),randstr(300,300));
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}
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}
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execsql {
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COMMIT;
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}
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} {}
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do_malloc2_test 2 -sql {
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BEGIN;
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UPDATE def SET a = randstr(100,100) WHERE (oid%9)==0;
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INSERT INTO def SELECT * FROM def WHERE (oid%13)==0;
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CREATE INDEX def_i3 ON def(b);
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UPDATE def SET a = randstr(100,100) WHERE (oid%9)==1;
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INSERT INTO def SELECT * FROM def WHERE (oid%13)==1;
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CREATE TABLE def2 AS SELECT * FROM def;
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DROP TABLE def;
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CREATE TABLE def AS SELECT * FROM def2;
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DROP TABLE def2;
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DELETE FROM def WHERE (oid%9)==2;
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INSERT INTO def SELECT * FROM def WHERE (oid%13)==2;
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COMMIT;
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}
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ifcapable tempdb {
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do_test malloc2.3.setup {
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execsql {
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CREATE TEMP TABLE ghi(a, b, c);
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BEGIN;
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}
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for {set i 0} {$i<20} {incr i} {
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execsql {
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INSERT INTO ghi VALUES(randstr(300,300),randstr(300,300),randstr(300,300));
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}
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}
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execsql {
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COMMIT;
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}
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} {}
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do_malloc2_test 3 -sql {
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BEGIN;
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CREATE INDEX ghi_i1 ON ghi(a);
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UPDATE def SET a = randstr(100,100) WHERE (oid%2)==0;
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UPDATE ghi SET a = randstr(100,100) WHERE (oid%2)==0;
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COMMIT;
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}
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}
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############################################################################
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# The test cases below are to increase the code coverage in btree.c and
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# pager.c of this test file. The idea is that each malloc() that occurs in
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# these two source files should be made to fail at least once.
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#
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catchsql {
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DROP TABLE ghi;
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}
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do_malloc2_test 4.1 -sql {
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SELECT * FROM def ORDER BY oid ASC;
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SELECT * FROM def ORDER BY oid DESC;
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}
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do_malloc2_test 4.2 -sql {
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PRAGMA cache_size = 10;
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BEGIN;
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-- This will put about 25 pages on the free list.
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DELETE FROM def WHERE 1;
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-- Allocate 32 new root pages. This will exercise the 'extract specific
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-- page from the freelist' code when in auto-vacuum mode (see the
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-- allocatePage() routine in btree.c).
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CREATE TABLE t1(a UNIQUE, b UNIQUE, c UNIQUE);
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CREATE TABLE t2(a UNIQUE, b UNIQUE, c UNIQUE);
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CREATE TABLE t3(a UNIQUE, b UNIQUE, c UNIQUE);
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CREATE TABLE t4(a UNIQUE, b UNIQUE, c UNIQUE);
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CREATE TABLE t5(a UNIQUE, b UNIQUE, c UNIQUE);
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CREATE TABLE t6(a UNIQUE, b UNIQUE, c UNIQUE);
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CREATE TABLE t7(a UNIQUE, b UNIQUE, c UNIQUE);
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CREATE TABLE t8(a UNIQUE, b UNIQUE, c UNIQUE);
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ROLLBACK;
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}
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########################################################################
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# Test that the global linked list of database handles works. An assert()
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# will fail if there is some problem.
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do_test malloc2-5 {
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sqlite3 db1 test.db
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sqlite3 db2 test.db
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sqlite3 db3 test.db
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sqlite3 db4 test.db
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sqlite3 db5 test.db
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sqlite3_extended_result_codes db1 1
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sqlite3_extended_result_codes db2 1
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sqlite3_extended_result_codes db3 1
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sqlite3_extended_result_codes db4 1
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sqlite3_extended_result_codes db5 1
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# Close the head of the list:
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db5 close
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# Close the end of the list:
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db1 close
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# Close a handle from the middle of the list:
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db3 close
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# Close the other two. Then open and close one more database, to make
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# sure the head of the list was set back to NULL.
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db2 close
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db4 close
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sqlite db1 test.db
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db1 close
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} {}
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########################################################################
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# Check that if a statement is active sqlite3_global_recover doesn't reset
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# the sqlite3_malloc_failed variable.
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#
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# Update: There is now no sqlite3_malloc_failed variable, so these tests
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# are not run.
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#
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# do_test malloc2-6.1 {
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# set ::STMT [sqlite3_prepare $::DB {SELECT * FROM def} -1 DUMMY]
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# sqlite3_step $::STMT
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# } {SQLITE_ROW}
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# do_test malloc2-6.2 {
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# sqlite3 db1 test.db
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# sqlite_malloc_fail 100
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# catchsql {
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# SELECT * FROM def;
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# } db1
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# } {1 {out of memory}}
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# do_test malloc2-6.3 {
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# sqlite3_global_recover
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# } {SQLITE_BUSY}
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# do_test malloc2-6.4 {
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# catchsql {
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# SELECT 'hello';
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# }
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# } {1 {out of memory}}
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# do_test malloc2-6.5 {
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# sqlite3_reset $::STMT
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# } {SQLITE_OK}
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# do_test malloc2-6.6 {
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# sqlite3_global_recover
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# } {SQLITE_OK}
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# do_test malloc2-6.7 {
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# catchsql {
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# SELECT 'hello';
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# }
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# } {0 hello}
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# do_test malloc2-6.8 {
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# sqlite3_step $::STMT
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# } {SQLITE_ERROR}
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# do_test malloc2-6.9 {
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# sqlite3_finalize $::STMT
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# } {SQLITE_SCHEMA}
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# do_test malloc2-6.10 {
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# db1 close
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# } {}
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########################################################################
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# Check that if an in-memory database is being used it is not possible
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# to recover from a malloc() failure.
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#
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# Update: An in-memory database can now survive a malloc() failure, so these
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# tests are not run.
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#
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# ifcapable memorydb {
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# do_test malloc2-7.1 {
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# sqlite3 db1 :memory:
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# list
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# } {}
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# do_test malloc2-7.2 {
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# sqlite_malloc_fail 100
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# catchsql {
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# SELECT * FROM def;
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# }
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# } {1 {out of memory}}
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# do_test malloc2-7.3 {
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# sqlite3_global_recover
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# } {SQLITE_ERROR}
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# do_test malloc2-7.4 {
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# catchsql {
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# SELECT 'hello';
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# }
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# } {1 {out of memory}}
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# do_test malloc2-7.5 {
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# db1 close
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# } {}
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# do_test malloc2-7.6 {
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# sqlite3_global_recover
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# } {SQLITE_OK}
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# do_test malloc2-7.7 {
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# catchsql {
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# SELECT 'hello';
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# }
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# } {0 hello}
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# }
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finish_test
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