chrome/common/child_process_logging_win.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 "chrome/common/child_process_logging.h"
   6
   7 #include <windows.h>
   8
   9 #include "base/debug/crash_logging.h"
  10 #include "base/memory/scoped_ptr.h"
  11 #include "base/strings/utf_string_conversions.h"
  12 #include "chrome/common/chrome_constants.h"
  13 #include "chrome/common/crash_keys.h"
  14 #include "chrome/installer/util/google_update_settings.h"
  15 #include "components/metrics/client_info.h"
  16
  17 namespace child_process_logging {
  18
  19 namespace {
  20
  21 // exported in breakpad_win.cc:
  22 //    void __declspec(dllexport) __cdecl SetCrashKeyValueImpl.
  23 typedef void (__cdecl *SetCrashKeyValue)(const wchar_t*, const wchar_t*);
  24
  25 // exported in breakpad_win.cc:
  26 //    void __declspec(dllexport) __cdecl ClearCrashKeyValueImpl.
  27 typedef void (__cdecl *ClearCrashKeyValue)(const wchar_t*);
  28
  29 void SetCrashKeyValueTrampoline(const base::StringPiece& key,
  30                                 const base::StringPiece& value) {
  31   static SetCrashKeyValue set_crash_key = NULL;
  32   if (!set_crash_key) {
  33     HMODULE exe_module = GetModuleHandle(chrome::kBrowserProcessExecutableName);
  34     if (!exe_module)
  35       return;
  36     set_crash_key = reinterpret_cast<SetCrashKeyValue>(
  37         GetProcAddress(exe_module, "SetCrashKeyValueImpl"));
  38   }
  39
  40   if (set_crash_key) {
  41     (set_crash_key)(base::UTF8ToWide(key).data(),
  42                     base::UTF8ToWide(value).data());
  43   }
  44 }
  45
  46 void ClearCrashKeyValueTrampoline(const base::StringPiece& key) {
  47   static ClearCrashKeyValue clear_crash_key = NULL;
  48   if (!clear_crash_key) {
  49     HMODULE exe_module = GetModuleHandle(chrome::kBrowserProcessExecutableName);
  50     if (!exe_module)
  51       return;
  52     clear_crash_key = reinterpret_cast<ClearCrashKeyValue>(
  53         GetProcAddress(exe_module, "ClearCrashKeyValueImpl"));
  54   }
  55
  56   if (clear_crash_key)
  57     (clear_crash_key)(base::UTF8ToWide(key).data());
  58 }
  59
  60 }  // namespace
  61
  62 void Init() {
  63   // Note: on other platforms, this is set up during Breakpad initialization,
  64   // in ChromeBreakpadClient. But on Windows, that is before the DLL module is
  65   // loaded, which is a prerequisite of the crash key system.
  66   crash_keys::RegisterChromeCrashKeys();
  67   base::debug::SetCrashKeyReportingFunctions(
  68       &SetCrashKeyValueTrampoline, &ClearCrashKeyValueTrampoline);
  69
  70   // This would be handled by BreakpadClient::SetCrashClientIdFromGUID(), but
  71   // because of the aforementioned issue, crash keys aren't ready yet at the
  72   // time of Breakpad initialization, load the client id backed up in Google
  73   // Update settings instead.
  74   scoped_ptr<metrics::ClientInfo> client_info =
  75       GoogleUpdateSettings::LoadMetricsClientInfo();
  76   if (client_info)
  77     crash_keys::SetCrashClientIdFromGUID(client_info->client_id);
  78 }
  79
  80 }  // namespace child_process_logging