blob: b034936c684d09cf83aee6b43bd3c7a6aaa8379d [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/memory/shared_memory.h"
#include "base/process/kill.h"
#include "base/process/process.h"
#include "base/strings/string16.h"
#include "build/build_config.h"
#include "content/common/content_export.h"
#include "content/public/browser/child_process_termination_info.h"
#include "content/public/common/process_type.h"
#include "ipc/ipc_sender.h"
#include "services/service_manager/public/mojom/service.mojom.h"
#if defined(OS_MACOSX)
#include "base/process/port_provider_mac.h"
namespace base {
class CommandLine;
class SharedPersistentMemoryAllocator;
namespace content {
class BrowserChildProcessHostDelegate;
class ChildProcessHost;
class SandboxedProcessLauncherDelegate;
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);
// Used to create a child process host, connecting the process to the
// Service Manager as a new service instance identified by |service_name| and
// (optional) |instance_id|.
static BrowserChildProcessHost* Create(
content::ProcessType process_type,
BrowserChildProcessHostDelegate* delegate,
const std::string& service_name);
// 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.
virtual void Launch(
std::unique_ptr<SandboxedProcessLauncherDelegate> delegate,
std::unique_ptr<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 info of a child.
// |known_dead| indicates that the child is already dead. On Linux, this
// information is necessary to retrieve accurate information. See
// ChildProcessLauncher::GetChildTerminationInfo() for more details.
virtual ChildProcessTerminationInfo GetTerminationInfo(bool known_dead) = 0;
// Take ownership of a "shared" metrics allocator (if one exists).
virtual std::unique_ptr<base::SharedPersistentMemoryAllocator>
TakeMetricsAllocator() = 0;
// Sets the user-visible name of the process.
virtual void SetName(const base::string16& name) = 0;
// Sets the name of the process used for metrics reporting.
virtual void SetMetricsName(const std::string& metrics_name) = 0;
// Set 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 is associated with this object.
virtual void SetProcess(base::Process process) = 0;
// Takes the ServiceRequest pipe away from this host. Use this only if you
// intend to forego process launch and use the ServiceRequest in-process
// instead. Calling Launch() after this is called will result in the child
// process having no Service Manager connection.
virtual service_manager::mojom::ServiceRequest
TakeInProcessServiceRequest() = 0;
#if defined(OS_MACOSX)
// Returns a PortProvider used to get the task port for child processes.
static base::PortProvider* GetPortProvider();
}; // namespace content