168 lines
5.0 KiB
Perl
Executable File
168 lines
5.0 KiB
Perl
Executable File
#!/usr/bin/env perl
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# Copyright (C) 2006-2008, 2016 Apple Inc. All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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# 1. Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# 2. Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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#
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# THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND ANY
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# EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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# DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY
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# DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
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# ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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# SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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# "check-for-exit-time-destructors" script for WebKit Open Source Project
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# Intended to be invoked from an Xcode build step to check if there are
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# any exit-time destructors in a target.
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use warnings;
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use strict;
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use File::Basename;
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use File::Spec;
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use Getopt::Long;
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sub touch($);
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sub printFunctions($$);
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my $coverageBuild;
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my $executablePath;
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my @files;
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my $showHelp;
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my $tempDir;
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if (@ARGV) {
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# Running in interactive mode with arguments.
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my $result = GetOptions(
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"h|help" => \$showHelp,
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);
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$executablePath = glob(shift @ARGV);
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if (!$result || $showHelp || @ARGV > 0) {
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print STDERR "Check for exit-time destructors.\n";
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print STDERR "Usage: " . basename($0) . " [options] path/to/executable\n";
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print STDERR <<END;
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[-h|--help] show this help message
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END
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exit 1;
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}
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$tempDir = File::Spec->tmpdir();
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@files = ($executablePath);
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} else {
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# Running from Xcode build phase script with no arguments.
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$coverageBuild = $ENV{'WEBKIT_COVERAGE_BUILD'};
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$executablePath = "$ENV{'TARGET_BUILD_DIR'}/$ENV{'EXECUTABLE_PATH'}";
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$tempDir = $ENV{'TARGET_TEMP_DIR'};
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my $arch = $ENV{'CURRENT_ARCH'};
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my @variants = split(" ", $ENV{'BUILD_VARIANTS'});
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my $variant = $variants[0]; # FIXME: Multi-variant builds only check first variant.
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my $list = $ENV{"LINK_FILE_LIST_${variant}_${arch}"};
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open LIST, $list || die "ERROR: Could not open $list\n";
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@files = <LIST>;
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chomp @files;
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close LIST;
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}
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my $buildTimestampPath = File::Spec->catfile($tempDir, basename($0) . ".timestamp");
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my $buildTimestampAge = -M $buildTimestampPath;
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my $scriptAge = -M $0;
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my $sawError = 0;
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for my $file (sort @files) {
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if (defined $buildTimestampAge && $buildTimestampAge < $scriptAge) {
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my $fileAge = -M $file;
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next if defined $fileAge && $fileAge > $buildTimestampAge;
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}
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if (!open NM, "(nm '$file' | sed 's/^/STDOUT:/') 2>&1 |") {
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print "ERROR: Could not open $file\n";
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$sawError = 1;
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next;
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}
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my $sawAtExit = 0;
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my $shortName = $file;
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$shortName =~ s/.*\///;
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while (<NM>) {
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if (/^STDOUT:/) {
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# With GC logging enabled Heap.o may contain finalizers, so we ignore them.
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$sawAtExit = 1 if (/___cxa_atexit/ && ($shortName ne "Heap.o"));
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} else {
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print STDERR if $_ ne "nm: no name list\n";
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}
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}
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close NM;
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next unless $sawAtExit;
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$sawError = 1 if printFunctions($shortName, $file);
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}
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if ($sawError and !$coverageBuild) {
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print "ERROR: Use static NeverDestroyed<T> from <wtf/NeverDestroyed.h>\n";
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unlink $executablePath;
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exit 1;
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}
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touch($buildTimestampPath);
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exit 0;
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sub touch($)
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{
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my ($path) = @_;
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open(TOUCH, ">", $path) or die "$!";
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close(TOUCH);
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}
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sub demangle($)
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{
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my ($symbol) = @_;
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if (!open FILT, "c++filt $symbol |") {
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print "ERROR: Could not open c++filt\n";
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return;
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}
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my $result = <FILT>;
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close FILT;
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chomp $result;
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return $result;
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}
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sub printFunctions($$)
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{
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my ($shortName, $path) = @_;
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if (!open OTOOL, "otool -tV '$path' |") {
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print "WARNING: Could not open $path\n";
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return 0;
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}
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my %functions;
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my $currentSymbol = "";
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while (<OTOOL>) {
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$currentSymbol = $1 if /^(\w+):$/;
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next unless $currentSymbol;
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$functions{demangle($currentSymbol)} = 1 if /___cxa_atexit/;
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}
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close OTOOL;
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my $result = 0;
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for my $function (sort keys %functions) {
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if (!$result) {
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print "ERROR: $shortName has exit time destructors in it! ($path)\n";
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$result = 1;
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}
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print "ERROR: In function $function\n";
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}
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return $result;
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}
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