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#!/usr/bin/perl
# Copyright (C) 2006, 2007, 2008 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.
# 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of
# its contributors may be used to endorse or promote products derived
# from this software without specific prior written permission.
#
# 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.
# "check-for-exit-time-destructors" script for WebKit Open Source Project
# Intended to be invoked from an Xcode build step to check if there are
# any exit-time destructors in a target.
use warnings;
use strict;
use File::Basename;
sub touch($);
sub printFunctions($$);
my $arch = $ENV{'CURRENT_ARCH'};
my $configuration = $ENV{'CONFIGURATION'};
my $target = $ENV{'TARGET_NAME'};
my $variant = $ENV{'CURRENT_VARIANT'};
my $coverageBuild = $ENV{'WEBKIT_COVERAGE_BUILD'};
my $debugRoot = $ENV{'WEBKIT_DEBUG_ROOT'};
$arch = $ENV{'NATIVE_ARCH'} if !$arch; # for Xcode 2.1, which does not have CURRENT_ARCH
$variant = "normal" if !$variant; # for Xcode 2.1, which does not have CURRENT_VARIANT
my $executablePath = "$ENV{'TARGET_BUILD_DIR'}/$ENV{'EXECUTABLE_PATH'}";
my $buildTimestampPath = $ENV{'TARGET_TEMP_DIR'} . "/" . basename($0) . ".timestamp";
my $buildTimestampAge = -M $buildTimestampPath;
my $scriptAge = -M $0;
my $list = $ENV{"LINK_FILE_LIST_${variant}_${arch}"};
if (!open LIST, $list) {
print "ERROR: Could not open $list\n";
exit 1;
}
my @files = <LIST>;
chomp @files;
close LIST;
my $sawError = 0;
for my $file (sort @files) {
if (defined $buildTimestampAge && $buildTimestampAge < $scriptAge) {
my $fileAge = -M $file;
next if defined $fileAge && $fileAge > $buildTimestampAge;
}
if (!open NM, "(nm '$file' | sed 's/^/STDOUT:/') 2>&1 |") {
print "ERROR: Could not open $file\n";
$sawError = 1;
next;
}
my $sawAtExit = 0;
my $shortName = $file;
$shortName =~ s/.*\///;
while (<NM>) {
if (/^STDOUT:/) {
# With GC logging enabled Heap.o may contain finalizers, so we ignore them.
$sawAtExit = 1 if (/___cxa_atexit/ && ($shortName ne "Heap.o"));
} else {
print STDERR if $_ ne "nm: no name list\n";
}
}
close NM;
next unless $sawAtExit;
$sawError = 1 if printFunctions($shortName, $file);
}
if ($sawError and !$coverageBuild) {
print "ERROR: Use DEFINE_STATIC_LOCAL from <wtf/StdLibExtras.h>\n";
unlink $executablePath;
exit 1;
}
touch($buildTimestampPath);
exit 0;
sub touch($)
{
my ($path) = @_;
open(TOUCH, ">", $path) or die "$!";
close(TOUCH);
}
sub demangle($)
{
my ($symbol) = @_;
if (!open FILT, "c++filt $symbol |") {
print "ERROR: Could not open c++filt\n";
return;
}
my $result = <FILT>;
close FILT;
chomp $result;
return $result;
}
sub printFunctions($$)
{
my ($shortName, $path) = @_;
if (!open OTOOL, "otool -tV '$path' |") {
print "WARNING: Could not open $path\n";
return 0;
}
my %functions;
my $currentSymbol = "";
while (<OTOOL>) {
$currentSymbol = $1 if /^(\w+):$/;
next unless $currentSymbol;
$functions{demangle($currentSymbol)} = 1 if /___cxa_atexit/;
}
close OTOOL;
my $result = 0;
for my $function (sort keys %functions) {
if (!$result) {
print "ERROR: $shortName has exit time destructors in it! ($path)\n";
$result = 1;
}
print "ERROR: In function $function\n";
}
return $result;
}
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