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content / public / browser / render_process_host_creation_observer.h [blame]
// Copyright 2019 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CONTENT_PUBLIC_BROWSER_RENDER_PROCESS_HOST_CREATION_OBSERVER_H_
#define CONTENT_PUBLIC_BROWSER_RENDER_PROCESS_HOST_CREATION_OBSERVER_H_
#include "content/common/content_export.h"
namespace content {
class RenderProcessHost;
struct ChildProcessTerminationInfo;
// An observer that gets notified any time a new RenderProcessHost is created.
// This can only be used on the UI thread.
class CONTENT_EXPORT RenderProcessHostCreationObserver {
public:
RenderProcessHostCreationObserver(const RenderProcessHostCreationObserver&) =
delete;
RenderProcessHostCreationObserver& operator=(
const RenderProcessHostCreationObserver&) = delete;
virtual ~RenderProcessHostCreationObserver();
// This method is invoked when the process was successfully launched. Note
// that the channel may or may not have been connected when this is invoked.
// A RenderProcessHost can be reused for a different renderer process (for
// instance in the case of a renderer process crash). In this case,
// `OnRenderProcessHostCreated` will be called again for the same
// `RenderProcessHost` when the new process is launched, without having been
// destroyed (i.e. `RenderProcessHostObserver::RenderProcessHostDestroyed` is
// not called).
virtual void OnRenderProcessHostCreated(RenderProcessHost* process_host) = 0;
// This method is invoked when a renderer process failed to launch
// successfully, and `OnRenderProcessHostCreated` hasn't yet been fired for
// the `RenderProcessHost`.
virtual void OnRenderProcessHostCreationFailed(
RenderProcessHost* host,
const ChildProcessTerminationInfo& info);
protected:
RenderProcessHostCreationObserver();
};
} // namespace content
#endif // CONTENT_PUBLIC_BROWSER_RENDER_PROCESS_HOST_CREATION_OBSERVER_H_