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instead of "mmap_limit". Also change SQLITE_CONFIG_MMAP_LIMIT and SQLITE_FCNTL_MMAP_LIMIT to SQLITE_CONFIG_MMAP_SIZE and SQLITE_FCNTL_MMAP_SIZE, respecctively. The default mmap_size is now always 0, meaning that memory mapped I/O is off by default. There is a new compile-time option SQLITE_MAX_MMAP_SIZE that determines a hard upper bound on the mmap_size. Setting SQLITE_MAX_MMAP_SIZE to zero disables the memory-mapped I/O logic and causes it to be omitted from the build. An extra argument is added to SQLITE_CONFIG_MMAP_SIZE that can optionally lower the SQLITE_MAX_MMAP_SIZE at start-time. The SQLITE_MAX_MMAP_SIZE is zero for platforms where we know that it does not work, meaning that it cannot be turned on by mistake on those platforms. FossilOrigin-Name: ea1404a10abd7f68e1f8e0708c8a3199d1f79665
135 lines
3.8 KiB
Plaintext
135 lines
3.8 KiB
Plaintext
# 2011 July 11
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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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# This file implements regression tests for SQLite library. The
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# focus of this script is recovery from transient manditory locks
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# that sometimes appear on database files due to anti-virus software.
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#
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if {$tcl_platform(platform)!="windows"} return
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set testdir [file dirname $argv0]
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source $testdir/tester.tcl
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set testprefix win32lock
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db close
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sqlite3_shutdown
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test_sqlite3_log xLog
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proc xLog {error_code msg} {
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lappend ::log $msg
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}
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sqlite3 db test.db
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db eval {PRAGMA mmap_size=0}
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do_test win32lock-1.1 {
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db eval {
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PRAGMA cache_size=10;
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CREATE TABLE t1(x,y);
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INSERT INTO t1 VALUES(1,randomblob(100000));
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INSERT INTO t1 VALUES(2,randomblob(50000));
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INSERT INTO t1 VALUES(3,randomblob(25000));
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INSERT INTO t1 VALUES(4,randomblob(12500));
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SELECT x, length(y) FROM t1 ORDER BY rowid;
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}
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} {1 100000 2 50000 3 25000 4 12500}
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unset -nocomplain delay1 rc msg
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set old_pending_byte [sqlite3_test_control_pending_byte 0x40000000]
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set win32_lock_ok [list]
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set win32_lock_error [list]
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set delay1 25
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while {1} {
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lock_win32_file test.db 0 $::delay1
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set ::log {}
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set rc [catch {db eval {SELECT x, length(y) FROM t1 ORDER BY rowid}} msg]
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if {$rc} {
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lappend win32_lock_error $::delay1
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do_test win32lock-1.2-$delay1-error {
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set ::msg
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} {disk I/O error}
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} else {
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lappend win32_lock_ok $::delay1
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do_test win32lock-1.2-$delay1-ok {
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set ::msg
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} {1 100000 2 50000 3 25000 4 12500}
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if {[info exists ::log] && $::log!=""} {
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do_test win32lock-1.2-$delay1-log1 {
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regsub {\d+} $::log # x
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set x
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} {{delayed #ms for lock/sharing conflict}}
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}
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}
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if {[llength $win32_lock_ok] && [llength $win32_lock_error]} break
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incr delay1 25
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if {$delay1 > 12500} {
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puts "Timed out waiting for \"ok\" and \"error\" results."
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break
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}
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sqlite3_sleep 10
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}
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do_test win32lock-2.0 {
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file_control_win32_av_retry db -1 -1
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} {0 10 25}
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do_test win32lock-2.1 {
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file_control_win32_av_retry db 1 1
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} {0 1 1}
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#
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# NOTE: It is known that the win32lock-2.2-* tests may fail if the system is
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# experiencing heavy load (i.e. they are very timing sensitive). This is
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# primarily due to the AV retry delay being set to 1 millisecond in the
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# win32lock-2.1 test (above). While it is important to test this corner
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# case for the AV retry logic, a failure of this test should probably not
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# be interpreted as a bug in SQLite or these test cases.
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#
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set win32_lock_ok [list]
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set win32_lock_error [list]
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set delay1 1
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while {1} {
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lock_win32_file test.db 0 $::delay1
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set ::log {}
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set rc [catch {db eval {SELECT x, length(y) FROM t1 ORDER BY rowid}} msg]
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if {$rc} {
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lappend win32_lock_error $::delay1
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do_test win32lock-2.2-$delay1-error {
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set ::msg
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} {disk I/O error}
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} else {
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lappend win32_lock_ok $::delay1
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do_test win32lock-2.2-$delay1-ok {
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set ::msg
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} {1 100000 2 50000 3 25000 4 12500}
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if {[info exists ::log] && $::log!=""} {
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do_test win32lock-2.2-$delay1-log1 {
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regsub {\d+} $::log # x
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set x
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} {{delayed #ms for lock/sharing conflict}}
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}
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}
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if {[llength $win32_lock_ok] && [llength $win32_lock_error]} break
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incr delay1 1
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if {$delay1 > 500} {
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puts "Timed out waiting for \"ok\" and \"error\" results."
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break
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}
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sqlite3_sleep 10
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}
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file_control_win32_av_retry db 10 25
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sqlite3_test_control_pending_byte $old_pending_byte
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db close
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sqlite3_shutdown
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test_sqlite3_log
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sqlite3_initialize
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finish_test
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