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105 lines
3.3 KiB
Tcl
105 lines
3.3 KiB
Tcl
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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 1
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}
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set ::go 1
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for {set ::n $start} {$::go && $::n < 50000} {incr ::n} {
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do_test $tn.$::n {
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# Remove all traces of database files test.db and test2.db from the files
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# system. Then open (empty database) "test.db" 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 test2.db}
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catch {file delete -force test2.db-journal}
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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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# 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 and
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# -sqlbody scripts.
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#
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sqlite3_memdebug_fail $::n 1
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set ::mallocbody {}
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if {[info exists ::mallocopts(-tclbody)]} {
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append ::mallocbody "$::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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set v [catch $::mallocbody msg]
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set failFlag [sqlite3_memdebug_fail -1 0]
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set go [expr {$failFlag>0}]
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if {$failFlag==0} {
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if {$v} {
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set v2 $msg
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} else {
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set v 1
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set v2 1
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}
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} elseif {!$v} {
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set v2 $msg
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} elseif {[info command db]=="" || [db errorcode]==7
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|| $msg=="out of memory"} {
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set v2 1
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} else {
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set v2 $msg
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}
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lappend v $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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unset ::mallocopts
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}
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