chrome/app/chrome_exe_main_gtk.cc

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "build/build_config.h"
   6 #include "chrome/browser/first_run/upgrade_util.h"
   7 #include "components/startup_metric_utils/startup_metric_utils.h"
   8
   9 // The entry point for all invocations of Chromium, browser and renderer. On
  10 // windows, this does nothing but load chrome.dll and invoke its entry point in
  11 // order to make it easy to update the app from GoogleUpdate. We don't need
  12 // that extra layer with on linux.
  13
  14 #if defined(ADDRESS_SANITIZER) && defined(GOOGLE_CHROME_BUILD)
  15 // Default AddressSanitizer options for the official build. These do not affect
  16 // tests or non-official Chromium builds.
  17 //  - disable the strict memcmp() checking (http://crbug.com/178677 and
  18 //    http://crbug.com/178404).
  19 //  - set the malloc_context_size (i.e. the size of stack traces collected by
  20 //    ASan for each malloc/free) to 5. These stack traces tend to accumulate
  21 //    very fast in applications using JIT (v8 in Chrome's case), see
  22 //    https://code.google.com/p/address-sanitizer/issues/detail?id=177
  23 //  - disable the in-process symbolization, which isn't 100% compatible with
  24 //    the existing sandboxes and doesn't make much sense for stripped official
  25 //    binaries.
  26 const char *kAsanDefaultOptions =
  27     "malloc_context_size=5 strict_memcmp=0 symbolize=false";
  28
  29 // Override the default ASan options for the Google Chrome executable.
  30 // __asan_default_options should not be instrumented, because it is called
  31 // before ASan is initialized.
  32 extern "C"
  33 __attribute__((no_sanitize_address))
  34 const char *__asan_default_options() {
  35   return kAsanDefaultOptions;
  36 }
  37 #endif
  38
  39 extern "C" {
  40 int ChromeMain(int argc, const char** argv);
  41 }
  42
  43 int main(int argc, const char** argv) {
  44   startup_metric_utils::RecordExeMainEntryTime();
  45   int return_code = ChromeMain(argc, argv);
  46
  47 #if defined(OS_LINUX)
  48   // Launch a new instance if we're shutting down because we detected an
  49   // upgrade in the persistent mode.
  50   upgrade_util::RelaunchChromeBrowserWithNewCommandLineIfNeeded();
  51 #endif
  52
  53   return return_code;
  54 }