chrome/browser/metrics/thread_watcher_report_hang.cc

   1 // Copyright 2014 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/browser/metrics/thread_watcher_report_hang.h"
   6
   7 // We disable optimizations for the whole file so the compiler doesn't merge
   8 // them all together.
   9 MSVC_DISABLE_OPTIMIZE()
  10 MSVC_PUSH_DISABLE_WARNING(4748)
  11
  12 #include "base/debug/debugger.h"
  13 #include "base/debug/dump_without_crashing.h"
  14 #include "build/build_config.h"
  15
  16 namespace metrics {
  17
  18 // The following are unique function names for forcing the crash when a thread
  19 // is unresponsive. This makes it possible to tell from the callstack alone what
  20 // thread was unresponsive.
  21 NOINLINE void ReportThreadHang() {
  22 #if defined(NDEBUG)
  23   base::debug::DumpWithoutCrashing();
  24 #else
  25   base::debug::BreakDebugger();
  26 #endif
  27 }
  28
  29 #if !defined(OS_ANDROID) || !defined(NDEBUG)
  30 // TODO(rtenneti): Enabled crashing, after getting data.
  31 NOINLINE void StartupHang() {
  32   ReportThreadHang();
  33 }
  34 #endif  // OS_ANDROID
  35
  36 NOINLINE void ShutdownHang() {
  37   ReportThreadHang();
  38 }
  39
  40 NOINLINE void ThreadUnresponsive_UI() {
  41   ReportThreadHang();
  42 }
  43
  44 NOINLINE void ThreadUnresponsive_DB() {
  45   ReportThreadHang();
  46 }
  47
  48 NOINLINE void ThreadUnresponsive_FILE() {
  49   ReportThreadHang();
  50 }
  51
  52 NOINLINE void ThreadUnresponsive_FILE_USER_BLOCKING() {
  53   ReportThreadHang();
  54 }
  55
  56 NOINLINE void ThreadUnresponsive_PROCESS_LAUNCHER() {
  57   ReportThreadHang();
  58 }
  59
  60 NOINLINE void ThreadUnresponsive_CACHE() {
  61   ReportThreadHang();
  62 }
  63
  64 NOINLINE void ThreadUnresponsive_IO() {
  65   ReportThreadHang();
  66 }
  67
  68 NOINLINE void CrashBecauseThreadWasUnresponsive(int thread_id) {
  69   // TODO(rtenneti): The following is a temporary change to check thread_id
  70   // numbers explicitly so that we will have minimum code. Will change after the
  71   // test run to use content::BrowserThread::ID enum.
  72   if (thread_id == 0)
  73     return ThreadUnresponsive_UI();
  74   else if (thread_id == 1)
  75     return ThreadUnresponsive_DB();
  76   else if (thread_id == 2)
  77     return ThreadUnresponsive_FILE();
  78   else if (thread_id == 3)
  79     return ThreadUnresponsive_FILE_USER_BLOCKING();
  80   else if (thread_id == 4)
  81     return ThreadUnresponsive_PROCESS_LAUNCHER();
  82   else if (thread_id == 5)
  83     return ThreadUnresponsive_CACHE();
  84   else if (thread_id == 6)
  85     return ThreadUnresponsive_IO();
  86 }
  87
  88 }  // namespace metrics
  89
  90 MSVC_POP_WARNING()
  91 MSVC_ENABLE_OPTIMIZE();