blob: 6d94b5aed690e4588bd56e0d97309622ea606126 [file] [log] [blame]
David Ghandehari9e5b5872016-07-28 09:50:04 -07001#!/usr/bin/perl
2
3# Copyright (C) 2006, 2007, 2008 Apple Inc. All rights reserved.
4#
5# Redistribution and use in source and binary forms, with or without
6# modification, are permitted provided that the following conditions
7# are met:
8#
9# 1. Redistributions of source code must retain the above copyright
10# notice, this list of conditions and the following disclaimer.
11# 2. Redistributions in binary form must reproduce the above copyright
12# notice, this list of conditions and the following disclaimer in the
13# documentation and/or other materials provided with the distribution.
14# 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of
15# its contributors may be used to endorse or promote products derived
16# from this software without specific prior written permission.
17#
18# THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
19# EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
20# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
21# DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
22# DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
23# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
24# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
25# ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28
29# "check-for-exit-time-destructors" script for WebKit Open Source Project
30
31# Intended to be invoked from an Xcode build step to check if there are
32# any exit-time destructors in a target.
33
34use warnings;
35use strict;
36
37use File::Basename;
38
39sub touch($);
40sub printFunctions($$);
41
42my $arch = $ENV{'CURRENT_ARCH'};
43my $configuration = $ENV{'CONFIGURATION'};
44my $target = $ENV{'TARGET_NAME'};
45my $variant = $ENV{'CURRENT_VARIANT'};
46my $coverageBuild = $ENV{'WEBKIT_COVERAGE_BUILD'};
47my $debugRoot = $ENV{'WEBKIT_DEBUG_ROOT'};
48
49$arch = $ENV{'NATIVE_ARCH'} if !$arch; # for Xcode 2.1, which does not have CURRENT_ARCH
50$variant = "normal" if !$variant; # for Xcode 2.1, which does not have CURRENT_VARIANT
51
52my $executablePath = "$ENV{'TARGET_BUILD_DIR'}/$ENV{'EXECUTABLE_PATH'}";
53
54my $buildTimestampPath = $ENV{'TARGET_TEMP_DIR'} . "/" . basename($0) . ".timestamp";
55my $buildTimestampAge = -M $buildTimestampPath;
56my $scriptAge = -M $0;
57
58my $list = $ENV{"LINK_FILE_LIST_${variant}_${arch}"};
59
60if (!open LIST, $list) {
61 print "ERROR: Could not open $list\n";
62 exit 1;
63}
64
65my @files = <LIST>;
66chomp @files;
67close LIST;
68
69my $sawError = 0;
70
71for my $file (sort @files) {
72 if (defined $buildTimestampAge && $buildTimestampAge < $scriptAge) {
73 my $fileAge = -M $file;
74 next if defined $fileAge && $fileAge > $buildTimestampAge;
75 }
76 if (!open NM, "(nm '$file' | sed 's/^/STDOUT:/') 2>&1 |") {
77 print "ERROR: Could not open $file\n";
78 $sawError = 1;
79 next;
80 }
81 my $sawAtExit = 0;
82 my $shortName = $file;
83 $shortName =~ s/.*\///;
84
85 while (<NM>) {
86 if (/^STDOUT:/) {
87 # With GC logging enabled Heap.o may contain finalizers, so we ignore them.
88 $sawAtExit = 1 if (/___cxa_atexit/ && ($shortName ne "Heap.o"));
89 } else {
90 print STDERR if $_ ne "nm: no name list\n";
91 }
92 }
93 close NM;
94 next unless $sawAtExit;
95
96 $sawError = 1 if printFunctions($shortName, $file);
97}
98
99if ($sawError and !$coverageBuild) {
100 print "ERROR: Use DEFINE_STATIC_LOCAL from <wtf/StdLibExtras.h>\n";
101 unlink $executablePath;
102 exit 1;
103}
104
105touch($buildTimestampPath);
106exit 0;
107
108sub touch($)
109{
110 my ($path) = @_;
111 open(TOUCH, ">", $path) or die "$!";
112 close(TOUCH);
113}
114
115sub demangle($)
116{
117 my ($symbol) = @_;
118 if (!open FILT, "c++filt $symbol |") {
119 print "ERROR: Could not open c++filt\n";
120 return;
121 }
122 my $result = <FILT>;
123 close FILT;
124 chomp $result;
125 return $result;
126}
127
128sub printFunctions($$)
129{
130 my ($shortName, $path) = @_;
131 if (!open OTOOL, "otool -tV '$path' |") {
132 print "WARNING: Could not open $path\n";
133 return 0;
134 }
135 my %functions;
136 my $currentSymbol = "";
137 while (<OTOOL>) {
138 $currentSymbol = $1 if /^(\w+):$/;
139 next unless $currentSymbol;
140 $functions{demangle($currentSymbol)} = 1 if /___cxa_atexit/;
141 }
142 close OTOOL;
143 my $result = 0;
144 for my $function (sort keys %functions) {
145 if (!$result) {
146 print "ERROR: $shortName has exit time destructors in it! ($path)\n";
147 $result = 1;
148 }
149 print "ERROR: In function $function\n";
150 }
151 return $result;
152}