chrome/app/chrome_exe_main_gtk.cc

// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "build/build_config.h"
#include "chrome/browser/first_run/upgrade_util.h"
#include "components/startup_metric_utils/startup_metric_utils.h"

// The entry point for all invocations of Chromium, browser and renderer. On
// windows, this does nothing but load chrome.dll and invoke its entry point in
// order to make it easy to update the app from GoogleUpdate. We don't need
// that extra layer with on linux.

#if defined(ADDRESS_SANITIZER) && defined(GOOGLE_CHROME_BUILD)
// Default AddressSanitizer options for the official build. These do not affect
// tests or non-official Chromium builds.
//  - disable the strict memcmp() checking (http://crbug.com/178677 and
//    http://crbug.com/178404).
//  - set the malloc_context_size (i.e. the size of stack traces collected by
//    ASan for each malloc/free) to 5. These stack traces tend to accumulate
//    very fast in applications using JIT (v8 in Chrome's case), see
//    https://code.google.com/p/address-sanitizer/issues/detail?id=177
//  - disable the in-process symbolization, which isn't 100% compatible with
//    the existing sandboxes and doesn't make much sense for stripped official
//    binaries.
const char *kAsanDefaultOptions =
    "malloc_context_size=5 strict_memcmp=0 symbolize=false";

// Override the default ASan options for the Google Chrome executable.
// __asan_default_options should not be instrumented, because it is called
// before ASan is initialized.
extern "C"
__attribute__((no_sanitize_address))
const char *__asan_default_options() {
  return kAsanDefaultOptions;
}
#endif

extern "C" {
int ChromeMain(int argc, const char** argv);
}

int main(int argc, const char** argv) {
  startup_metric_utils::RecordExeMainEntryTime();
  int return_code = ChromeMain(argc, argv);

#if defined(OS_LINUX)
  // Launch a new instance if we're shutting down because we detected an
  // upgrade in the persistent mode.
  upgrade_util::RelaunchChromeBrowserWithNewCommandLineIfNeeded();
#endif

  return return_code;
}