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// Copyright 2013 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 COMPONENTS_CRASH_CONTENT_BROWSER_CRASH_DUMP_MANAGER_ANDROID_H_
#define COMPONENTS_CRASH_CONTENT_BROWSER_CRASH_DUMP_MANAGER_ANDROID_H_
#include <map>
#include "base/files/file_path.h"
#include "base/synchronization/lock.h"
#include "components/crash/content/browser/crash_dump_observer_android.h"
namespace breakpad {
// This class manages the crash minidumps.
// On Android, because of process isolation, each renderer process runs with a
// different UID. As a result, we cannot generate the minidumps in the browser
// (as the browser process does not have access to some system files for the
// crashed process). So the minidump is generated in the renderer process.
// Since the isolated process cannot open files, we provide it on creation with
// a file descriptor into which to write the minidump in the event of a crash.
// This class creates these file descriptors and associates them with render
// processes and takes the appropriate action when the render process
// terminates.
class CrashDumpManager : public breakpad::CrashDumpObserver::Client {
public:
CrashDumpManager(const base::FilePath& crash_dump_dir, int descriptor_id);
~CrashDumpManager() override;
// breakpad::CrashDumpObserver::Client implementation:
void OnChildStart(int child_process_id,
content::FileDescriptorInfo* mappings) override;
void OnChildExit(int child_process_id,
base::ProcessHandle pid,
content::ProcessType process_type,
base::TerminationStatus termination_status,
base::android::ApplicationState app_state) override;
private:
typedef std::map<int, base::FilePath> ChildProcessIDToMinidumpPath;
// This enum is used to back a UMA histogram, and must be treated as
// append-only.
enum ExitStatus {
EMPTY_MINIDUMP_WHILE_RUNNING,
EMPTY_MINIDUMP_WHILE_PAUSED,
EMPTY_MINIDUMP_WHILE_BACKGROUND,
VALID_MINIDUMP_WHILE_RUNNING,
VALID_MINIDUMP_WHILE_PAUSED,
VALID_MINIDUMP_WHILE_BACKGROUND,
MINIDUMP_STATUS_COUNT
};
static void ProcessMinidump(const base::FilePath& minidump_path,
const base::FilePath& crash_dump_dir,
base::ProcessHandle pid,
content::ProcessType process_type,
base::TerminationStatus termination_status,
base::android::ApplicationState app_state);
// This map should only be accessed with its lock aquired as it is accessed
// from the PROCESS_LAUNCHER and UI threads.
base::Lock child_process_id_to_minidump_path_lock_;
ChildProcessIDToMinidumpPath child_process_id_to_minidump_path_;
// The directory in which temporary minidump files should be created.
base::FilePath crash_dump_dir_;
// The id used to identify the file descriptor in the set of file
// descriptor mappings passed to the child process.
int descriptor_id_;
DISALLOW_COPY_AND_ASSIGN(CrashDumpManager);
};
} // namespace breakpad
#endif // COMPONENTS_CRASH_CONTENT_BROWSER_CRASH_DUMP_MANAGER_ANDROID_H_
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