blob: 711fe03202bd3d6dc8844fe393558963808bd55b [file] [log] [blame]
#!/usr/bin/env perl
# Copyright (C) 2014-2015 Apple Inc. All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
#
# 1. Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
# EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
# DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
# DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
# ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
use strict;
use FindBin;
use Getopt::Long qw(:config pass_through);
use POSIX;
# First we run the test once to determine what the number of static OSR exits is. Then
# we run it for each static OSR exit index, and for each index, we force exit on the
# first dynamic time that exit is taken, the last, and something in the middle.
my $verbose = 0;
# We allow flags to be passed via environment variables, which is rather useful for
# running with the run-jsc-stress-tests harness.
if (defined($ENV{JS_OSRFUZZ_VERBOSE})) {
$verbose = $ENV{JS_OSRFUZZ_VERBOSE};
}
GetOptions(
'verbose' => \$verbose
);
my $commandString = shift @ARGV;
my $staticCheckCount;
sub fail {
my $context = shift;
select((select(STDOUT), $ |= 1)[0]); # This is a perlism for flush. We need to do it this way to support older perls.
select((select(STDERR), $ |= 1)[0]);
die "Failure for command $commandString: $context";
}
if (shift @ARGV) {
die "Ignoring garbage arguments; only the first non-option argument is used as the command string.";
}
open (my $testInput, "$commandString |") or fail("Cannot execute initial command when getting static OSR exit count");
while (my $inputLine = <$testInput>) {
chomp($inputLine);
my $handled = 0;
if ($inputLine =~ /^JSC OSR EXIT FUZZ:/) {
if ($' =~ /encountered ([0-9]+) static checks\./) {
$staticCheckCount = $1;
}
$handled = 1;
}
if (!$handled || $verbose) {
print "staticCheckCount: $inputLine\n";
}
}
close($testInput);
if ($verbose) {
print "Static check count: $staticCheckCount\n";
}
if (!$staticCheckCount) {
print "OSR exit fuzz testing not supported by jsc binary.\n";
exit 0;
}
for (my $staticCheckIndex = 1; $staticCheckIndex <= $staticCheckCount; ++$staticCheckIndex) {
if ($verbose) {
print "Detecting number of dynamic checks for static check at index $staticCheckIndex.\n";
}
open (my $testInput, "$commandString --fireOSRExitFuzzAtStatic=$staticCheckIndex |") or fail("Cannot execute command for static check index $staticCheckIndex");
my $dynamicCheckCount;
while (my $inputLine = <$testInput>) {
chomp($inputLine);
my $handled = 0;
if ($inputLine =~ /^JSC OSR EXIT FUZZ:/) {
if ($' =~ /encountered ([0-9]+) dynamic checks\./) {
$dynamicCheckCount = $1;
}
$handled = 1;
}
if (!$handled || $verbose) {
print "dynamicCheckCount: $inputLine\n";
}
}
close($testInput);
if ($verbose) {
print "Dynamic check count: $dynamicCheckCount\n";
}
# Now test triggering the exit at three points: always, immediately, at the last possible
# moment, and somewhere in between. We use "0" to mean always.
my @triggers = (0, 1, int((1 + $dynamicCheckCount) / 2), $dynamicCheckCount);
for (my $triggerIndex = 0; $triggerIndex < scalar @triggers; ++$triggerIndex) {
my $dynamicCheckIndex = $triggers[$triggerIndex];
if ($verbose) {
if ($dynamicCheckIndex == 0) {
print "Running with static check index = $staticCheckIndex and all dynamic check indices.\n";
} else {
print "Running with static check index = $staticCheckIndex and dynamic check index = $dynamicCheckIndex.\n";
}
}
my $optionToUse;
if ($dynamicCheckIndex == 0) {
$optionToUse = "--fireOSRExitFuzzAtOrAfter=1";
} else {
$optionToUse = "--fireOSRExitFuzzAt=$dynamicCheckIndex";
}
open ($testInput, "$commandString --fireOSRExitFuzzAtStatic=$staticCheckIndex $optionToUse |") or fail("Cannot execute command for static check index $staticCheckIndex and dynamic check index $dynamicCheckIndex");
while (my $inputLine = <$testInput>) {
chomp($inputLine);
my $handled = 0;
if ($inputLine =~ /^JSC OSR EXIT FUZZ:/) {
$handled = 1;
}
if (!$handled || $verbose) {
print "testRun: $inputLine\n";
}
}
close($testInput);
}
if ($verbose) {
print "\n";
}
}
if ($verbose) {
print "Success!\n";
}