OSX/libsecurity_utilities/lib/powerwatch.h

   1 /*
   2  * Copyright (c) 2000-2001,2003-2004,2011-2014 Apple Inc. All Rights Reserved.
   3  *
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   6  * This file contains Original Code and/or Modifications of Original Code
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   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. Please obtain a copy of the License at
  10  * http://www.opensource.apple.com/apsl/ and read it before using this
  11  * file.
  12  *
  13  * The Original Code and all software distributed under the License are
  14  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  15  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
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  23
  24
  25 //
  26 // powerwatch - hook into system notifications of power events
  27 //
  28 #ifndef _H_POWERWATCH
  29 #define _H_POWERWATCH
  30
  31 #include <TargetConditionals.h>
  32
  33 #if TARGET_OS_OSX
  34
  35 #include <security_utilities/machserver.h>
  36 #include <IOKit/pwr_mgt/IOPMLib.h>
  37 #include <IOKit/pwr_mgt/IOPMLibPrivate.h>
  38
  39
  40 namespace Security {
  41 namespace MachPlusPlus {
  42
  43
  44 //
  45 // PowerWatcher embodies the ability to respond to power events.
  46 // By itself, it is inert - nobody will call its virtual methods.
  47 // Use one of it subclasses, which take care of "hooking" into an
  48 // event delivery mechanism.
  49 //
  50 class PowerWatcher {
  51 public:
  52     virtual ~PowerWatcher();
  53
  54 public:
  55     virtual void systemWillSleep();
  56     virtual void systemIsWaking();
  57     virtual void systemWillPowerDown();
  58         virtual void systemWillPowerOn();
  59 };
  60
  61
  62 //
  63 // A PowerWatcher that is dispatches events from an IOKit message
  64 //
  65 class IOPowerWatcher : public PowerWatcher {
  66 public:
  67         IOPowerWatcher();
  68         ~IOPowerWatcher();
  69
  70 protected:
  71     io_connect_t mKernelPort;
  72     IONotificationPortRef mPortRef;
  73     io_object_t mHandle;
  74
  75     static void ioCallback(void *refCon, io_service_t service,
  76         natural_t messageType, void *argument);
  77
  78 };
  79
  80
  81 //
  82 // Hook into a "raw" MachServer object for event delivery
  83 //
  84 class PortPowerWatcher : public IOPowerWatcher, public MachServer::NoReplyHandler {
  85 public:
  86     PortPowerWatcher();
  87
  88     boolean_t handle(mach_msg_header_t *in);
  89 };
  90
  91
  92 //
  93 // Someone should add a RunLoopPowerWatcher class here, I suppose.
  94 // Well, if you need one: Tag, You're It!
  95 //
  96
  97
  98 } // end namespace MachPlusPlus
  99
 100 } // end namespace Security
 101
 102 #endif //TARGET_OS_OSX
 103
 104 #endif //_H_POWERWATCH