blob: 1cf5745c79a0043d48d21196ff8d77cfa29b7a9f [file] [log] [blame]
// Copyright (c) 2012 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 "base/environment.h"
#include "base/process/kill.h"
#include "base/process/process_handle.h"
#include "base/process/process_metrics.h"
#include "base/strings/string16.h"
#include "build/build_config.h"
#include "content/common/content_export.h"
#include "content/public/common/process_type.h"
#include "ipc/ipc_sender.h"
namespace base {
class CommandLine;
class FilePath;
namespace content {
class BrowserChildProcessHostDelegate;
class ChildProcessHost;
class SandboxedProcessLauncherDelegate;
class ServiceRegistry;
struct ChildProcessData;
// This represents child processes of the browser process, i.e. plugins. They
// will get terminated at browser shutdown.
class CONTENT_EXPORT BrowserChildProcessHost : public IPC::Sender {
// Used to create a child process host. The delegate must outlive this object.
// |process_type| needs to be either an enum value from ProcessType or an
// embedder-defined value.
static BrowserChildProcessHost* Create(
content::ProcessType process_type,
BrowserChildProcessHostDelegate* delegate);
// Returns the child process host with unique id |child_process_id|, or
// nullptr if it doesn't exist. |child_process_id| is NOT the process ID, but
// is the same unique ID as |ChildProcessData::id|.
static BrowserChildProcessHost* FromID(int child_process_id);
~BrowserChildProcessHost() override {}
// Derived classes call this to launch the child process asynchronously.
// Takes ownership of |cmd_line| and |delegate|.
virtual void Launch(
SandboxedProcessLauncherDelegate* delegate,
base::CommandLine* cmd_line,
bool terminate_on_shutdown) = 0;
virtual const ChildProcessData& GetData() const = 0;
// Returns the ChildProcessHost object used by this object.
virtual ChildProcessHost* GetHost() const = 0;
// Returns the termination status of a child. |exit_code| is the
// status returned when the process exited (for posix, as returned
// from waitpid(), for Windows, as returned from
// GetExitCodeProcess()). |exit_code| may be nullptr.
// |known_dead| indicates that the child is already dead. On Linux, this
// information is necessary to retrieve accurate information. See
// ChildProcessLauncher::GetChildTerminationStatus() for more details.
virtual base::TerminationStatus GetTerminationStatus(
bool known_dead, int* exit_code) = 0;
// Sets the user-visible name of the process.
virtual void SetName(const base::string16& name) = 0;
// Set the handle of the process. BrowserChildProcessHost will do this when
// the Launch method is used to start the process. However if the owner
// of this object doesn't call Launch and starts the process in another way,
// they need to call this method so that the process handle is associated with
// this object.
virtual void SetHandle(base::ProcessHandle handle) = 0;
// Get the Mojo service registry connected to the child process. Returns
// nullptr if no service registry exists.
virtual ServiceRegistry* GetServiceRegistry() = 0;
#if defined(OS_MACOSX) && !defined(OS_IOS)
// Returns a PortProvider used to get process metrics for child processes.
static base::ProcessMetrics::PortProvider* GetPortProvider();
}; // namespace content