blob: 4510495ceea1a049b8cbb92e2f08df06a76c1f90 [file] [log] [blame]
// Copyright 2014 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 "chrome/browser/metrics/thread_watcher_report_hang.h"
// We disable optimizations for the whole file so the compiler doesn't merge
// them all together.
MSVC_DISABLE_OPTIMIZE()
MSVC_PUSH_DISABLE_WARNING(4748)
#include "base/debug/debugger.h"
#include "base/debug/dump_without_crashing.h"
namespace metrics {
// The following are unique function names for forcing the crash when a thread
// is unresponsive. This makes it possible to tell from the callstack alone what
// thread was unresponsive.
NOINLINE void ReportThreadHang() {
volatile const char* inhibit_comdat = __func__;
ALLOW_UNUSED_LOCAL(inhibit_comdat);
#if defined(NDEBUG)
base::debug::DumpWithoutCrashing();
#else
base::debug::BreakDebugger();
#endif
}
#if !defined(OS_ANDROID)
NOINLINE void StartupHang() {
volatile int inhibit_comdat = __LINE__;
ALLOW_UNUSED_LOCAL(inhibit_comdat);
// TODO(rtenneti): http://crbug.com/440885 enable crashing after fixing false
// positive startup hang data.
// ReportThreadHang();
}
NOINLINE void ShutdownHang() {
volatile int inhibit_comdat = __LINE__;
ALLOW_UNUSED_LOCAL(inhibit_comdat);
ReportThreadHang();
}
#endif // !defined(OS_ANDROID)
NOINLINE void ThreadUnresponsive_UI() {
volatile int inhibit_comdat = __LINE__;
ALLOW_UNUSED_LOCAL(inhibit_comdat);
ReportThreadHang();
}
NOINLINE void ThreadUnresponsive_IO() {
volatile int inhibit_comdat = __LINE__;
ALLOW_UNUSED_LOCAL(inhibit_comdat);
ReportThreadHang();
}
NOINLINE void CrashBecauseThreadWasUnresponsive(
content::BrowserThread::ID thread_id) {
switch (thread_id) {
case content::BrowserThread::UI:
return ThreadUnresponsive_UI();
case content::BrowserThread::IO:
return ThreadUnresponsive_IO();
case content::BrowserThread::ID_COUNT:
NOTREACHED();
break;
}
}
} // namespace metrics
MSVC_POP_WARNING()
MSVC_ENABLE_OPTIMIZE();