content/browser/loader/global_routing_id.h

// 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.

#ifndef CONTENT_BROWSER_LOADER_GLOBAL_ROUTING_ID_H_
#define CONTENT_BROWSER_LOADER_GLOBAL_ROUTING_ID_H_

#include <tuple>

#include "ipc/ipc_message.h"

namespace content {

// Uniquely identifies the route from which a net::URLRequest comes.
struct GlobalRoutingID {
  GlobalRoutingID() : child_id(-1), route_id(-1) {
  }

  GlobalRoutingID(int child_id, int route_id)
      : child_id(child_id),
        route_id(route_id) {
  }

  // The unique ID of the child process (different from OS's PID).
  int child_id;

  // The route ID (unique for each URLRequest source).
  int route_id;

  bool operator<(const GlobalRoutingID& other) const {
    return std::tie(child_id, route_id) <
           std::tie(other.child_id, other.route_id);
  }
  bool operator==(const GlobalRoutingID& other) const {
    return child_id == other.child_id &&
        route_id == other.route_id;
  }
  bool operator!=(const GlobalRoutingID& other) const {
    return !(*this == other);
  }
};

// Same as GlobalRoutingID except the route_id must be a RenderFrameHost routing
// id.
struct GlobalFrameRoutingId {
  GlobalFrameRoutingId() : child_id(0), frame_routing_id(MSG_ROUTING_NONE) {}

  GlobalFrameRoutingId(int child_id, int frame_routing_id)
      : child_id(child_id), frame_routing_id(frame_routing_id) {}

  // The unique ID of the child process (different from OS's PID).
  int child_id;

  // The route ID (unique for each URLRequest source).
  int frame_routing_id;

  bool operator<(const GlobalFrameRoutingId& other) const {
    return std::tie(child_id, frame_routing_id) <
           std::tie(other.child_id, other.frame_routing_id);
  }
  bool operator==(const GlobalFrameRoutingId& other) const {
    return child_id == other.child_id &&
           frame_routing_id == other.frame_routing_id;
  }
  bool operator!=(const GlobalFrameRoutingId& other) const {
    return !(*this == other);
  }
};

}  // namespace content

#endif  // CONTENT_BROWSER_LOADER_GLOBAL_ROUTING_ID_H_