Upstream crash changes for android.

chrome/browser/crash_handler_host_linux.h

-// Copyright (c) 2011 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.
-
-#ifndef CHROME_BROWSER_CRASH_HANDLER_HOST_LINUX_H_
-#define CHROME_BROWSER_CRASH_HANDLER_HOST_LINUX_H_
-#pragma once
-
-#include "base/compiler_specific.h"
-#include "base/message_loop.h"
-
-#if defined(USE_LINUX_BREAKPAD)
-#include <sys/types.h>
-
-#include <string>
-
-#include "base/memory/scoped_ptr.h"
-
-class BreakpadInfo;
-
-namespace base {
-class Thread;
-}
-#endif  // defined(USE_LINUX_BREAKPAD)
-
-template <typename T> struct DefaultSingletonTraits;
-
-// This is the base class for singleton objects which crash dump renderers and
-// plugins on Linux. We perform the crash dump from the browser because it
-// allows us to be outside the sandbox.
-//
-// PluginCrashHandlerHostLinux and RendererCrashHandlerHostLinux are singletons
-// that handle plugin and renderer crashes, respectively.
-//
-// Processes signal that they need to be dumped by sending a datagram over a
-// UNIX domain socket. All processes of the same type share the client end of
-// this socket which is installed in their descriptor table before exec.
-class CrashHandlerHostLinux : public MessageLoopForIO::Watcher,
-                              public MessageLoop::DestructionObserver {
- public:
-  // Get the file descriptor which processes should be given in order to signal
-  // crashes to the browser.
-  int GetDeathSignalSocket() const {
-    return process_socket_;
-  }
-
-  // MessagePumbLibevent::Watcher impl:
-  virtual void OnFileCanWriteWithoutBlocking(int fd) OVERRIDE;
-  virtual void OnFileCanReadWithoutBlocking(int fd) OVERRIDE;
-
-  // MessageLoop::DestructionObserver impl:
-  virtual void WillDestroyCurrentMessageLoop() OVERRIDE;
-
-#if defined(USE_LINUX_BREAKPAD)
-  // Whether we are shutting down or not.
-  bool IsShuttingDown() const;
-#endif
-
- protected:
-  CrashHandlerHostLinux();
-  virtual ~CrashHandlerHostLinux();
-
-#if defined(USE_LINUX_BREAKPAD)
-  // Only called in concrete subclasses.
-  void InitCrashUploaderThread();
-
-  std::string process_type_;
-#endif
-
- private:
-  void Init();
-
-#if defined(USE_LINUX_BREAKPAD)
-  // This is here on purpose to make CrashHandlerHostLinux abstract.
-  virtual void SetProcessType() = 0;
-
-  // Do work on the FILE thread for OnFileCanReadWithoutBlocking().
-  void WriteDumpFile(BreakpadInfo* info,
-                     pid_t crashing_pid,
-                     char* crash_context,
-                     int signal_fd);
-
-  // Continue OnFileCanReadWithoutBlocking()'s work on the IO thread.
-  void QueueCrashDumpTask(BreakpadInfo* info, int signal_fd);
-#endif
-
-  int process_socket_;
-  int browser_socket_;
-
-#if defined(USE_LINUX_BREAKPAD)
-  MessageLoopForIO::FileDescriptorWatcher file_descriptor_watcher_;
-  scoped_ptr<base::Thread> uploader_thread_;
-  bool shutting_down_;
-#endif
-
-  DISALLOW_COPY_AND_ASSIGN(CrashHandlerHostLinux);
-};
-
-class ExtensionCrashHandlerHostLinux : public CrashHandlerHostLinux {
- public:
-  // Returns the singleton instance.
-  static ExtensionCrashHandlerHostLinux* GetInstance();
-
- private:
-  friend struct DefaultSingletonTraits<ExtensionCrashHandlerHostLinux>;
-  ExtensionCrashHandlerHostLinux();
-  virtual ~ExtensionCrashHandlerHostLinux();
-
-#if defined(USE_LINUX_BREAKPAD)
-  virtual void SetProcessType() OVERRIDE;
-#endif
-
-  DISALLOW_COPY_AND_ASSIGN(ExtensionCrashHandlerHostLinux);
-};
-
-class GpuCrashHandlerHostLinux : public CrashHandlerHostLinux {
- public:
-  // Returns the singleton instance.
-  static GpuCrashHandlerHostLinux* GetInstance();
-
- private:
-  friend struct DefaultSingletonTraits<GpuCrashHandlerHostLinux>;
-  GpuCrashHandlerHostLinux();
-  virtual ~GpuCrashHandlerHostLinux();
-
-#if defined(USE_LINUX_BREAKPAD)
-  virtual void SetProcessType() OVERRIDE;
-#endif
-
-  DISALLOW_COPY_AND_ASSIGN(GpuCrashHandlerHostLinux);
-};
-
-class PluginCrashHandlerHostLinux : public CrashHandlerHostLinux {
- public:
-  // Returns the singleton instance.
-  static PluginCrashHandlerHostLinux* GetInstance();
-
- private:
-  friend struct DefaultSingletonTraits<PluginCrashHandlerHostLinux>;
-  PluginCrashHandlerHostLinux();
-  virtual ~PluginCrashHandlerHostLinux();
-
-#if defined(USE_LINUX_BREAKPAD)
-  virtual void SetProcessType() OVERRIDE;
-#endif
-
-  DISALLOW_COPY_AND_ASSIGN(PluginCrashHandlerHostLinux);
-};
-
-class PpapiCrashHandlerHostLinux : public CrashHandlerHostLinux {
- public:
-  // Returns the singleton instance.
-  static PpapiCrashHandlerHostLinux* GetInstance();
-
- private:
-  friend struct DefaultSingletonTraits<PpapiCrashHandlerHostLinux>;
-  PpapiCrashHandlerHostLinux();
-  virtual ~PpapiCrashHandlerHostLinux();
-
-#if defined(USE_LINUX_BREAKPAD)
-  virtual void SetProcessType() OVERRIDE;
-#endif
-
-  DISALLOW_COPY_AND_ASSIGN(PpapiCrashHandlerHostLinux);
-};
-
-class RendererCrashHandlerHostLinux : public CrashHandlerHostLinux {
- public:
-  // Returns the singleton instance.
-  static RendererCrashHandlerHostLinux* GetInstance();
-
- private:
-  friend struct DefaultSingletonTraits<RendererCrashHandlerHostLinux>;
-  RendererCrashHandlerHostLinux();
-  virtual ~RendererCrashHandlerHostLinux();
-
-#if defined(USE_LINUX_BREAKPAD)
-  virtual void SetProcessType() OVERRIDE;
-#endif
-
-  DISALLOW_COPY_AND_ASSIGN(RendererCrashHandlerHostLinux);
-};
-
-#endif  // CHROME_BROWSER_CRASH_HANDLER_HOST_LINUX_H_