cdsa/cdsa_utilities/powerwatch.h

   1 /*
   2  * Copyright (c) 2000-2001 Apple Computer, Inc. All Rights Reserved.
   3  *
   4  * The contents of this file constitute Original Code as defined in and are
   5  * subject to the Apple Public Source License Version 1.2 (the 'License').
   6  * You may not use this file except in compliance with the License. Please obtain
   7  * a copy of the License at http://www.apple.com/publicsource and read it before
   8  * using this file.
   9  *
  10  * This Original Code and all software distributed under the License are
  11  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS
  12  * OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, INCLUDING WITHOUT
  13  * LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
  14  * PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. Please see the License for the
  15  * specific language governing rights and limitations under the License.
  16  */
  17
  18
  19 //
  20 // powerwatch - hook into system notifications of power events
  21 //
  22 #ifndef _H_POWERWATCH
  23 #define _H_POWERWATCH
  24
  25 #include <Security/machserver.h>
  26 #include <IOKit/pwr_mgt/IOPMLib.h>
  27
  28
  29 namespace Security {
  30 namespace MachPlusPlus {
  31
  32
  33 //
  34 // PowerWatcher embodies the ability to respond to power events.
  35 // By itself, it is inert - nobody will call its virtual methods.
  36 // Use one of it subclasses, which take care of "hooking" into an
  37 // event delivery mechanism.
  38 //
  39 class PowerWatcher {
  40 public:
  41     PowerWatcher();
  42     virtual ~PowerWatcher();
  43
  44 protected:
  45     virtual void systemWillSleep();
  46     virtual void systemIsWaking();
  47     virtual void systemWillPowerDown();
  48
  49 protected:
  50     io_connect_t mKernelPort;
  51     IONotificationPortRef mPortRef;
  52     io_object_t mHandle;
  53
  54     static void ioCallback(void *refCon, io_service_t service,
  55         natural_t messageType, void *argument);
  56 };
  57
  58
  59 //
  60 // Hook into a "raw" MachServer object for event delivery
  61 //
  62 class PortPowerWatcher : public PowerWatcher, public MachServer::NoReplyHandler {
  63 public:
  64     PortPowerWatcher();
  65     ~PortPowerWatcher();
  66
  67     boolean_t handle(mach_msg_header_t *in);
  68 };
  69
  70
  71 //
  72 // Someone should add a RunLoopPowerWatcher class here, I suppose.
  73 // Well, if you need one: Tag, You're It!
  74 //
  75
  76
  77 } // end namespace MachPlusPlus
  78
  79 } // end namespace Security
  80
  81 #endif //_H_POWERWATCH