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