content/common/mac/io_surface_manager_messages.h

   1 // Copyright 2015 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef CONTENT_COMMON_MAC_IO_SURFACE_MANAGER_MESSAGES_H_
   6 #define CONTENT_COMMON_MAC_IO_SURFACE_MANAGER_MESSAGES_H_
   7
   8 #include <mach/message.h>
   9
  10 #include "content/common/mac/io_surface_manager_token.h"
  11
  12 // Mach messages used for child processes.
  13
  14 // Message IDs.
  15 // Note: we currently use __LINE__ to give unique IDs to messages.
  16 // They're unique since all messages are defined in this file.
  17 #define MACH_MESSAGE_ID() __LINE__
  18
  19 namespace content {
  20
  21 // Messages sent from the child process to the browser.
  22
  23 struct IOSurfaceManagerHostMsg_RegisterIOSurface {
  24   enum { ID = MACH_MESSAGE_ID() };
  25   mach_msg_header_t header;
  26   mach_msg_body_t body;
  27   mach_msg_port_descriptor_t io_surface_port;
  28   IOSurfaceManagerToken::Name token_name;
  29   int io_surface_id;
  30   int client_id;
  31 };
  32
  33 struct IOSurfaceManagerHostMsg_UnregisterIOSurface {
  34   enum { ID = MACH_MESSAGE_ID() };
  35   mach_msg_header_t header;
  36   mach_msg_body_t body;
  37   IOSurfaceManagerToken::Name token_name;
  38   int io_surface_id;
  39   int client_id;
  40 };
  41
  42 struct IOSurfaceManagerHostMsg_AcquireIOSurface {
  43   enum { ID = MACH_MESSAGE_ID() };
  44   mach_msg_header_t header;
  45   mach_msg_body_t body;
  46   IOSurfaceManagerToken::Name token_name;
  47   int io_surface_id;
  48 };
  49
  50 // Messages sent from the browser to the child process.
  51
  52 struct IOSurfaceManagerMsg_RegisterIOSurfaceReply {
  53   mach_msg_header_t header;
  54   mach_msg_body_t body;
  55   boolean_t result;
  56 };
  57
  58 struct IOSurfaceManagerMsg_AcquireIOSurfaceReply {
  59   mach_msg_header_t header;
  60   mach_msg_body_t body;
  61   mach_msg_port_descriptor_t io_surface_port;
  62   boolean_t result;
  63 };
  64
  65 }  // namespace content
  66
  67 #endif  // CONTENT_COMMON_MAC_IO_SURFACE_MANAGER_MESSAGES_H_