include/libkern/OSThermalNotification.h

   1 /*
   2  * Copyright (c) 2007 Apple Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   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,
  16  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  18  * Please see the License for the specific language governing rights and
  19  * limitations under the License.
  20  *
  21  * @APPLE_LICENSE_HEADER_END@
  22  */
  23
  24 #ifndef _OSTHERMALNOTIFICATION_H_
  25 #define _OSTHERMALNOTIFICATION_H_
  26
  27 #include <sys/cdefs.h>
  28 #include <Availability.h>
  29
  30 /*
  31 **  OSThermalNotification.h
  32 **
  33 **  Notification mechanism to alert registered tasks when device thermal conditions
  34 **  reach certain thresholds. Notifications are triggered in both directions
  35 **  so clients can manage their memory usage more and less aggressively.
  36 **
  37 */
  38
  39 __BEGIN_DECLS
  40
  41 typedef enum {
  42         OSThermalNotificationLevelAny      = -1,
  43         OSThermalNotificationLevelNormal   =  0,
  44 } OSThermalNotificationLevel;
  45
  46 extern OSThermalNotificationLevel _OSThermalNotificationLevelForBehavior(int) __OSX_AVAILABLE_STARTING(__MAC_NA, __IPHONE_4_2);
  47 extern void _OSThermalNotificationSetLevelForBehavior(int, int) __OSX_AVAILABLE_STARTING(__MAC_NA, __IPHONE_4_2);
  48
  49 enum {
  50         kOSThermalMitigationNone,
  51         kOSThermalMitigation70PercentTorch,
  52         kOSThermalMitigation70PercentBacklight,
  53         kOSThermalMitigation50PercentTorch,
  54         kOSThermalMitigation50PercentBacklight,
  55         kOSThermalMitigationDisableTorch,
  56         kOSThermalMitigation25PercentBacklight,
  57         kOSThermalMitigationDisableMapsHalo,
  58         kOSThermalMitigationAppTerminate,
  59         kOSThermalMitigationDeviceRestart,
  60         kOSThermalMitigationThermalTableReady,
  61         kOSThermalMitigationCount
  62 };
  63
  64 #define OSThermalNotificationLevel70PercentTorch _OSThermalNotificationLevelForBehavior(kOSThermalMitigation70PercentTorch)
  65 #define OSThermalNotificationLevel70PercentBacklight _OSThermalNotificationLevelForBehavior(kOSThermalMitigation70PercentBacklight)
  66 #define OSThermalNotificationLevel50PercentTorch _OSThermalNotificationLevelForBehavior(kOSThermalMitigation50PercentTorch)
  67 #define OSThermalNotificationLevel50PercentBacklight _OSThermalNotificationLevelForBehavior(kOSThermalMitigation50PercentBacklight)
  68 #define OSThermalNotificationLevelDisableTorch _OSThermalNotificationLevelForBehavior(kOSThermalMitigationDisableTorch)
  69 #define OSThermalNotificationLevel25PercentBacklight _OSThermalNotificationLevelForBehavior(kOSThermalMitigation25PercentBacklight)
  70 #define OSThermalNotificationLevelDisableMapsHalo _OSThermalNotificationLevelForBehavior(kOSThermalMitigationDisableMapsHalo)
  71 #define OSThermalNotificationLevelAppTerminate _OSThermalNotificationLevelForBehavior(kOSThermalMitigationAppTerminate)
  72 #define OSThermalNotificationLevelDeviceRestart _OSThermalNotificationLevelForBehavior(kOSThermalMitigationDeviceRestart)
  73
  74 /* Backwards compatibility */
  75 #define OSThermalNotificationLevelWarning OSThermalNotificationLevel70PercentBacklight
  76 #define OSThermalNotificationLevelUrgent OSThermalNotificationLevelAppTerminate
  77 #define OSThermalNotificationLevelCritical OSThermalNotificationLevelDeviceRestart
  78
  79 /*
  80 ** Simple polling interface to detect current thermal level
  81 */
  82
  83 extern OSThermalNotificationLevel OSThermalNotificationCurrentLevel(void) __OSX_AVAILABLE_STARTING(__MAC_NA, __IPHONE_2_0);
  84
  85 /*
  86 ** External notify(3) string for manual notification setup
  87 */
  88
  89 extern const char * const kOSThermalNotificationName __OSX_AVAILABLE_STARTING(__MAC_NA, __IPHONE_2_0);
  90
  91 __END_DECLS
  92
  93 #endif /* _OSTHERMALNOTIFICATION_H_ */