3 # The author disclaims copyright to this source code. In place of
4 # a legal notice, here is a blessing:
6 # May you do good and not evil.
7 # May you find forgiveness for yourself and forgive others.
8 # May you share freely, never taking more than you give.
10 #***********************************************************************
12 # This file tests the effect of the mmap() or mremap() system calls
13 # returning an error on the library.
15 # If either mmap() or mremap() fails, SQLite should log an error
16 # message, then continue accessing the database using read() and
17 # write() exclusively.
20 set testdir [file dirname $argv0]
21 source $testdir/tester.tcl
24 if {$::tcl_platform(platform)!="unix" || [test_syscall defaultvfs] != "unix"} {
36 proc xLog {error_code msg} {
37 if {[string match os_unix.c* $msg]} {
42 foreach syscall {mmap mremap} {
43 test_syscall uninstall
44 if {[catch {test_syscall install $syscall}]} continue
46 for {set i 1} {$i < 20} {incr i} {
48 execsql { PRAGMA mmap_size = 8000000 }
50 test_syscall fault $i 1
51 test_syscall errno $syscall ENOMEM
54 do_execsql_test 1.$syscall.$i.1 {
55 CREATE TABLE t1(a, b, UNIQUE(a, b));
56 INSERT INTO t1 VALUES(randomblob(1000), randomblob(1000));
57 INSERT INTO t1 SELECT randomblob(1000), randomblob(1000) FROM t1;
58 INSERT INTO t1 SELECT randomblob(1000), randomblob(1000) FROM t1;
59 INSERT INTO t1 SELECT randomblob(1000), randomblob(1000) FROM t1;
60 INSERT INTO t1 SELECT randomblob(1000), randomblob(1000) FROM t1;
61 INSERT INTO t1 SELECT randomblob(1000), randomblob(1000) FROM t1;
62 INSERT INTO t1 SELECT randomblob(1000), randomblob(1000) FROM t1;
65 set nFail [test_syscall fault 0 0]
67 do_execsql_test 1.$syscall.$i.2 {
68 SELECT count(*) FROM t1;
69 PRAGMA integrity_check;
72 do_test 1.$syscall.$i.3 {
73 expr {$nFail==0 || $nFail==1}
76 do_test 1.$syscall.$i.4.nFail=$nFail {
77 regexp ".*${syscall}.*" $::log
83 test_syscall uninstall