654 lines
20 KiB
Tcl
654 lines
20 KiB
Tcl
# 2007 May 05
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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 contains common code used by many different malloc tests
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# within the test suite.
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#
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# $Id: malloc_common.tcl,v 1.22 2008/09/23 16:41:30 danielk1977 Exp $
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# If we did not compile with malloc testing enabled, then do nothing.
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#
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ifcapable builtin_test {
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set MEMDEBUG 1
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} else {
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set MEMDEBUG 0
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return 0
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}
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# Transient and persistent OOM errors:
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#
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set FAULTSIM(oom-transient) [list \
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-injectstart {oom_injectstart 0} \
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-injectstop oom_injectstop \
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-injecterrlist {{1 {out of memory}}} \
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]
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set FAULTSIM(oom-persistent) [list \
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-injectstart {oom_injectstart 1000000} \
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-injectstop oom_injectstop \
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-injecterrlist {{1 {out of memory}}} \
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]
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# Transient and persistent IO errors:
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#
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set FAULTSIM(ioerr-transient) [list \
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-injectstart {ioerr_injectstart 0} \
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-injectstop ioerr_injectstop \
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-injecterrlist {{1 {disk I/O error}}} \
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]
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set FAULTSIM(ioerr-persistent) [list \
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-injectstart {ioerr_injectstart 1} \
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-injectstop ioerr_injectstop \
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-injecterrlist {{1 {disk I/O error}}} \
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]
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# SQLITE_FULL errors (always persistent):
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#
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set FAULTSIM(full) [list \
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-injectinstall fullerr_injectinstall \
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-injectstart fullerr_injectstart \
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-injectstop fullerr_injectstop \
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-injecterrlist {{1 {database or disk is full}}} \
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-injectuninstall fullerr_injectuninstall \
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]
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# Transient and persistent SHM errors:
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#
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set FAULTSIM(shmerr-transient) [list \
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-injectinstall shmerr_injectinstall \
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-injectstart {shmerr_injectstart 0} \
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-injectstop shmerr_injectstop \
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-injecterrlist {{1 {disk I/O error}}} \
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-injectuninstall shmerr_injectuninstall \
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]
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set FAULTSIM(shmerr-persistent) [list \
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-injectinstall shmerr_injectinstall \
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-injectstart {shmerr_injectstart 1} \
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-injectstop shmerr_injectstop \
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-injecterrlist {{1 {disk I/O error}}} \
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-injectuninstall shmerr_injectuninstall \
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]
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# Transient and persistent CANTOPEN errors:
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#
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set FAULTSIM(cantopen-transient) [list \
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-injectinstall cantopen_injectinstall \
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-injectstart {cantopen_injectstart 0} \
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-injectstop cantopen_injectstop \
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-injecterrlist {{1 {unable to open database file}}} \
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-injectuninstall cantopen_injectuninstall \
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]
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set FAULTSIM(cantopen-persistent) [list \
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-injectinstall cantopen_injectinstall \
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-injectstart {cantopen_injectstart 1} \
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-injectstop cantopen_injectstop \
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-injecterrlist {{1 {unable to open database file}}} \
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-injectuninstall cantopen_injectuninstall \
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]
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#--------------------------------------------------------------------------
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# Usage do_faultsim_test NAME ?OPTIONS...?
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#
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# -faults List of fault types to simulate.
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#
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# -prep Script to execute before -body.
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#
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# -body Script to execute (with fault injection).
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#
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# -test Script to execute after -body.
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#
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proc do_faultsim_test {name args} {
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global FAULTSIM
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set DEFAULT(-faults) [array names FAULTSIM]
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set DEFAULT(-prep) ""
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set DEFAULT(-body) ""
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set DEFAULT(-test) ""
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array set O [array get DEFAULT]
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array set O $args
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foreach o [array names O] {
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if {[info exists DEFAULT($o)]==0} { error "unknown option: $o" }
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}
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set faultlist [list]
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foreach f $O(-faults) {
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set flist [array names FAULTSIM $f]
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if {[llength $flist]==0} { error "unknown fault: $f" }
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set faultlist [concat $faultlist $flist]
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}
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set testspec [list -prep $O(-prep) -body $O(-body) -test $O(-test)]
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foreach f [lsort -unique $faultlist] {
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eval do_one_faultsim_test "$name-$f" $FAULTSIM($f) $testspec
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}
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}
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#-------------------------------------------------------------------------
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# Procedures to save and restore the current file-system state:
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#
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# faultsim_save
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# faultsim_save_and_close
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# faultsim_restore_and_reopen
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# faultsim_delete_and_reopen
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#
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proc faultsim_save {} {
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foreach f [glob -nocomplain sv_test.db*] { file delete -force $f }
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foreach f [glob -nocomplain test.db*] {
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set f2 "sv_$f"
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file copy -force $f $f2
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}
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}
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proc faultsim_save_and_close {} {
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faultsim_save
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catch { db close }
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return ""
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}
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proc faultsim_restore_and_reopen {{dbfile test.db}} {
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catch { db close }
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foreach f [glob -nocomplain test.db*] { file delete -force $f }
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foreach f2 [glob -nocomplain sv_test.db*] {
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set f [string range $f2 3 end]
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file copy -force $f2 $f
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}
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sqlite3 db $dbfile
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sqlite3_extended_result_codes db 1
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sqlite3_db_config_lookaside db 0 0 0
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}
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proc faultsim_integrity_check {{db db}} {
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set ic [$db eval { PRAGMA integrity_check }]
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if {$ic != "ok"} { error "Integrity check: $ic" }
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}
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proc faultsim_delete_and_reopen {{file test.db}} {
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catch { db close }
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foreach f [glob -nocomplain test.db*] { file delete -force $f }
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sqlite3 db $file
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}
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# The following procs are used as [do_one_faultsim_test] callbacks when
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# injecting OOM faults into test cases.
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#
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proc oom_injectstart {nRepeat iFail} {
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sqlite3_memdebug_fail $iFail -repeat $nRepeat
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}
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proc oom_injectstop {} {
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sqlite3_memdebug_fail -1
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}
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# The following procs are used as [do_one_faultsim_test] callbacks when
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# injecting IO error faults into test cases.
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#
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proc ioerr_injectstart {persist iFail} {
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set ::sqlite_io_error_persist $persist
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set ::sqlite_io_error_pending $iFail
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}
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proc ioerr_injectstop {} {
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set sv $::sqlite_io_error_hit
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set ::sqlite_io_error_persist 0
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set ::sqlite_io_error_pending 0
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set ::sqlite_io_error_hardhit 0
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set ::sqlite_io_error_hit 0
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set ::sqlite_io_error_pending 0
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return $sv
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}
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# The following procs are used as [do_one_faultsim_test] callbacks when
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# injecting shared-memory related error faults into test cases.
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#
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proc shmerr_injectinstall {} {
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testvfs shmfault -default true
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shmfault filter {xShmOpen xShmMap xShmLock}
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}
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proc shmerr_injectuninstall {} {
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catch {db close}
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catch {db2 close}
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shmfault delete
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}
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proc shmerr_injectstart {persist iFail} {
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shmfault ioerr $iFail $persist
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}
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proc shmerr_injectstop {} {
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shmfault ioerr
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}
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# The following procs are used as [do_one_faultsim_test] callbacks when
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# injecting SQLITE_FULL error faults into test cases.
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#
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proc fullerr_injectinstall {} {
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testvfs shmfault -default true
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}
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proc fullerr_injectuninstall {} {
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catch {db close}
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catch {db2 close}
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shmfault delete
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}
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proc fullerr_injectstart {iFail} {
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shmfault full $iFail 1
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}
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proc fullerr_injectstop {} {
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shmfault full
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}
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# The following procs are used as [do_one_faultsim_test] callbacks when
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# injecting SQLITE_CANTOPEN error faults into test cases.
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#
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proc cantopen_injectinstall {} {
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testvfs shmfault -default true
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}
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proc cantopen_injectuninstall {} {
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catch {db close}
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catch {db2 close}
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shmfault delete
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}
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proc cantopen_injectstart {persist iFail} {
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shmfault cantopen $iFail $persist
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}
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proc cantopen_injectstop {} {
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shmfault cantopen
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}
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# This command is not called directly. It is used by the
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# [faultsim_test_result] command created by [do_faultsim_test] and used
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# by -test scripts.
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#
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proc faultsim_test_result_int {args} {
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upvar testrc testrc testresult testresult testnfail testnfail
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set t [list $testrc $testresult]
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set r $args
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if { ($testnfail==0 && $t != [lindex $r 0]) || [lsearch $r $t]<0 } {
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error "nfail=$testnfail rc=$testrc result=$testresult"
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}
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}
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#--------------------------------------------------------------------------
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# Usage do_one_faultsim_test NAME ?OPTIONS...?
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#
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# The first argument, <test number>, is used as a prefix of the test names
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# taken by tests executed by this command. Options are as follows. All
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# options take a single argument.
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#
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# -injectstart Script to enable fault-injection.
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#
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# -injectstop Script to disable fault-injection.
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#
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# -injecterrlist List of generally acceptable test results (i.e. error
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# messages). Example: [list {1 {out of memory}}]
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#
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# -injectinstall
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#
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# -injectuninstall
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#
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# -prep Script to execute before -body.
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#
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# -body Script to execute (with fault injection).
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#
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# -test Script to execute after -body.
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#
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proc do_one_faultsim_test {testname args} {
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set DEFAULT(-injectstart) "expr"
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set DEFAULT(-injectstop) "expr 0"
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set DEFAULT(-injecterrlist) [list]
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set DEFAULT(-injectinstall) ""
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set DEFAULT(-injectuninstall) ""
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set DEFAULT(-prep) ""
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set DEFAULT(-body) ""
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set DEFAULT(-test) ""
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array set O [array get DEFAULT]
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array set O $args
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foreach o [array names O] {
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if {[info exists DEFAULT($o)]==0} { error "unknown option: $o" }
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}
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proc faultsim_test_proc {testrc testresult testnfail} $O(-test)
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proc faultsim_test_result {args} "
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uplevel faultsim_test_result_int \$args [list $O(-injecterrlist)]
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"
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eval $O(-injectinstall)
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set stop 0
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for {set iFail 1} {!$stop} {incr iFail} {
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# Evaluate the -prep script.
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#
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eval $O(-prep)
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# Start the fault-injection. Run the -body script. Stop the fault
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# injection. Local var $nfail is set to the total number of faults
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# injected into the system this trial.
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#
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eval $O(-injectstart) $iFail
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set rc [catch $O(-body) res]
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set nfail [eval $O(-injectstop)]
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# Run the -test script. If it throws no error, consider this trial
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# sucessful. If it does throw an error, cause a [do_test] test to
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# fail (and print out the unexpected exception thrown by the -test
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# script at the same time).
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#
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set rc [catch [list faultsim_test_proc $rc $res $nfail] res]
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if {$rc == 0} {set res ok}
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do_test $testname.$iFail [list list $rc $res] {0 ok}
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# If no faults where injected this trial, don't bother running
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# any more. This test is finished.
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#
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if {$nfail==0} { set stop 1 }
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}
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eval $O(-injectuninstall)
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}
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# Usage: do_malloc_test <test number> <options...>
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#
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# The first argument, <test number>, is an integer used to name the
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# tests executed by this proc. Options are as follows:
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#
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# -tclprep TCL script to run to prepare test.
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# -sqlprep SQL script to run to prepare test.
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# -tclbody TCL script to run with malloc failure simulation.
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# -sqlbody TCL script to run with malloc failure simulation.
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# -cleanup TCL script to run after the test.
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#
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# This command runs a series of tests to verify SQLite's ability
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# to handle an out-of-memory condition gracefully. It is assumed
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# that if this condition occurs a malloc() call will return a
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# NULL pointer. Linux, for example, doesn't do that by default. See
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# the "BUGS" section of malloc(3).
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#
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# Each iteration of a loop, the TCL commands in any argument passed
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# to the -tclbody switch, followed by the SQL commands in any argument
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# passed to the -sqlbody switch are executed. Each iteration the
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# Nth call to sqliteMalloc() is made to fail, where N is increased
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# each time the loop runs starting from 1. When all commands execute
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# successfully, the loop ends.
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#
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proc do_malloc_test {tn args} {
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array unset ::mallocopts
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array set ::mallocopts $args
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if {[string is integer $tn]} {
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set tn malloc-$tn
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}
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if {[info exists ::mallocopts(-start)]} {
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set start $::mallocopts(-start)
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} else {
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set start 0
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}
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if {[info exists ::mallocopts(-end)]} {
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set end $::mallocopts(-end)
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} else {
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set end 50000
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}
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save_prng_state
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foreach ::iRepeat {0 10000000} {
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set ::go 1
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for {set ::n $start} {$::go && $::n <= $end} {incr ::n} {
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# If $::iRepeat is 0, then the malloc() failure is transient - it
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# fails and then subsequent calls succeed. If $::iRepeat is 1,
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# then the failure is persistent - once malloc() fails it keeps
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# failing.
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#
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set zRepeat "transient"
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if {$::iRepeat} {set zRepeat "persistent"}
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restore_prng_state
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foreach file [glob -nocomplain test.db-mj*] {file delete -force $file}
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do_test ${tn}.${zRepeat}.${::n} {
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# Remove all traces of database files test.db and test2.db
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# from the file-system. Then open (empty database) "test.db"
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# with the handle [db].
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#
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catch {db close}
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catch {file delete -force test.db}
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catch {file delete -force test.db-journal}
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catch {file delete -force test.db-wal}
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catch {file delete -force test2.db}
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catch {file delete -force test2.db-journal}
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catch {file delete -force test2.db-wal}
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if {[info exists ::mallocopts(-testdb)]} {
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file copy $::mallocopts(-testdb) test.db
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}
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catch { sqlite3 db test.db }
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if {[info commands db] ne ""} {
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sqlite3_extended_result_codes db 1
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}
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sqlite3_db_config_lookaside db 0 0 0
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# Execute any -tclprep and -sqlprep scripts.
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#
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if {[info exists ::mallocopts(-tclprep)]} {
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eval $::mallocopts(-tclprep)
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}
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if {[info exists ::mallocopts(-sqlprep)]} {
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execsql $::mallocopts(-sqlprep)
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}
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# Now set the ${::n}th malloc() to fail and execute the -tclbody
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# and -sqlbody scripts.
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#
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sqlite3_memdebug_fail $::n -repeat $::iRepeat
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set ::mallocbody {}
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if {[info exists ::mallocopts(-tclbody)]} {
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append ::mallocbody "$::mallocopts(-tclbody)\n"
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}
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if {[info exists ::mallocopts(-sqlbody)]} {
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append ::mallocbody "db eval {$::mallocopts(-sqlbody)}"
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}
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# The following block sets local variables as follows:
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#
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# isFail - True if an error (any error) was reported by sqlite.
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# nFail - The total number of simulated malloc() failures.
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# nBenign - The number of benign simulated malloc() failures.
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#
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set isFail [catch $::mallocbody msg]
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set nFail [sqlite3_memdebug_fail -1 -benigncnt nBenign]
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# puts -nonewline " (isFail=$isFail nFail=$nFail nBenign=$nBenign) "
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# If one or more mallocs failed, run this loop body again.
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#
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set go [expr {$nFail>0}]
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if {($nFail-$nBenign)==0} {
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if {$isFail} {
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set v2 $msg
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} else {
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set isFail 1
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set v2 1
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}
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} elseif {!$isFail} {
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set v2 $msg
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} elseif {
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[info command db]=="" ||
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[db errorcode]==7 ||
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$msg=="out of memory"
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} {
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set v2 1
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} else {
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set v2 $msg
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puts [db errorcode]
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}
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lappend isFail $v2
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} {1 1}
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if {[info exists ::mallocopts(-cleanup)]} {
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catch [list uplevel #0 $::mallocopts(-cleanup)] msg
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}
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}
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}
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unset ::mallocopts
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sqlite3_memdebug_fail -1
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}
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#-------------------------------------------------------------------------
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# This proc is used to test a single SELECT statement. Parameter $name is
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# passed a name for the test case (i.e. "fts3_malloc-1.4.1") and parameter
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# $sql is passed the text of the SELECT statement. Parameter $result is
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# set to the expected output if the SELECT statement is successfully
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# executed using [db eval].
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#
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# Example:
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#
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# do_select_test testcase-1.1 "SELECT 1+1, 1+2" {1 2}
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#
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# If global variable DO_MALLOC_TEST is set to a non-zero value, or if
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# it is not defined at all, then OOM testing is performed on the SELECT
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# statement. Each OOM test case is said to pass if either (a) executing
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# the SELECT statement succeeds and the results match those specified
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|
# by parameter $result, or (b) TCL throws an "out of memory" error.
|
|
#
|
|
# If DO_MALLOC_TEST is defined and set to zero, then the SELECT statement
|
|
# is executed just once. In this case the test case passes if the results
|
|
# match the expected results passed via parameter $result.
|
|
#
|
|
proc do_select_test {name sql result} {
|
|
uplevel [list doPassiveTest 0 $name $sql [list 0 $result]]
|
|
}
|
|
|
|
proc do_restart_select_test {name sql result} {
|
|
uplevel [list doPassiveTest 1 $name $sql [list 0 $result]]
|
|
}
|
|
|
|
proc do_error_test {name sql error} {
|
|
uplevel [list doPassiveTest 0 $name $sql [list 1 $error]]
|
|
}
|
|
|
|
proc doPassiveTest {isRestart name sql catchres} {
|
|
if {![info exists ::DO_MALLOC_TEST]} { set ::DO_MALLOC_TEST 1 }
|
|
|
|
switch $::DO_MALLOC_TEST {
|
|
0 { # No malloc failures.
|
|
do_test $name [list set {} [uplevel [list catchsql $sql]]] $catchres
|
|
return
|
|
}
|
|
1 { # Simulate transient failures.
|
|
set nRepeat 1
|
|
set zName "transient"
|
|
set nStartLimit 100000
|
|
set nBackup 1
|
|
}
|
|
2 { # Simulate persistent failures.
|
|
set nRepeat 1
|
|
set zName "persistent"
|
|
set nStartLimit 100000
|
|
set nBackup 1
|
|
}
|
|
3 { # Simulate transient failures with extra brute force.
|
|
set nRepeat 100000
|
|
set zName "ridiculous"
|
|
set nStartLimit 1
|
|
set nBackup 10
|
|
}
|
|
}
|
|
|
|
# The set of acceptable results from running [catchsql $sql].
|
|
#
|
|
set answers [list {1 {out of memory}} $catchres]
|
|
set str [join $answers " OR "]
|
|
|
|
set nFail 1
|
|
for {set iLimit $nStartLimit} {$nFail} {incr iLimit} {
|
|
for {set iFail 1} {$nFail && $iFail<=$iLimit} {incr iFail} {
|
|
for {set iTest 0} {$iTest<$nBackup && ($iFail-$iTest)>0} {incr iTest} {
|
|
|
|
if {$isRestart} { sqlite3 db test.db }
|
|
|
|
sqlite3_memdebug_fail [expr $iFail-$iTest] -repeat $nRepeat
|
|
set res [uplevel [list catchsql $sql]]
|
|
if {[lsearch -exact $answers $res]>=0} { set res $str }
|
|
set testname "$name.$zName.$iFail"
|
|
do_test "$name.$zName.$iLimit.$iFail" [list set {} $res] $str
|
|
|
|
set nFail [sqlite3_memdebug_fail -1 -benigncnt nBenign]
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
#-------------------------------------------------------------------------
|
|
# Test a single write to the database. In this case a "write" is a
|
|
# DELETE, UPDATE or INSERT statement.
|
|
#
|
|
# If OOM testing is performed, there are several acceptable outcomes:
|
|
#
|
|
# 1) The write succeeds. No error is returned.
|
|
#
|
|
# 2) An "out of memory" exception is thrown and:
|
|
#
|
|
# a) The statement has no effect, OR
|
|
# b) The current transaction is rolled back, OR
|
|
# c) The statement succeeds. This can only happen if the connection
|
|
# is in auto-commit mode (after the statement is executed, so this
|
|
# includes COMMIT statements).
|
|
#
|
|
# If the write operation eventually succeeds, zero is returned. If a
|
|
# transaction is rolled back, non-zero is returned.
|
|
#
|
|
# Parameter $name is the name to use for the test case (or test cases).
|
|
# The second parameter, $tbl, should be the name of the database table
|
|
# being modified. Parameter $sql contains the SQL statement to test.
|
|
#
|
|
proc do_write_test {name tbl sql} {
|
|
if {![info exists ::DO_MALLOC_TEST]} { set ::DO_MALLOC_TEST 1 }
|
|
|
|
# Figure out an statement to get a checksum for table $tbl.
|
|
db eval "SELECT * FROM $tbl" V break
|
|
set cksumsql "SELECT md5sum([join [concat rowid $V(*)] ,]) FROM $tbl"
|
|
|
|
# Calculate the initial table checksum.
|
|
set cksum1 [db one $cksumsql]
|
|
|
|
if {$::DO_MALLOC_TEST } {
|
|
set answers [list {1 {out of memory}} {0 {}}]
|
|
if {$::DO_MALLOC_TEST==1} {
|
|
set modes {100000 transient}
|
|
} else {
|
|
set modes {1 persistent}
|
|
}
|
|
} else {
|
|
set answers [list {0 {}}]
|
|
set modes [list 0 nofail]
|
|
}
|
|
set str [join $answers " OR "]
|
|
|
|
foreach {nRepeat zName} $modes {
|
|
for {set iFail 1} 1 {incr iFail} {
|
|
if {$::DO_MALLOC_TEST} {sqlite3_memdebug_fail $iFail -repeat $nRepeat}
|
|
|
|
set res [uplevel [list catchsql $sql]]
|
|
set nFail [sqlite3_memdebug_fail -1 -benigncnt nBenign]
|
|
if {$nFail==0} {
|
|
do_test $name.$zName.$iFail [list set {} $res] {0 {}}
|
|
return
|
|
} else {
|
|
if {[lsearch $answers $res]>=0} {
|
|
set res $str
|
|
}
|
|
do_test $name.$zName.$iFail [list set {} $res] $str
|
|
set cksum2 [db one $cksumsql]
|
|
if {$cksum1 != $cksum2} return
|
|
}
|
|
}
|
|
}
|
|
}
|