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 /* Define pressure levels usable by OSThermalPressureLevel */
  42 #if TARGET_OS_IPHONE
  43 typedef enum {
  44         kOSThermalPressureLevelNominal = 0,
  45         kOSThermalPressureLevelLight = 10,
  46         kOSThermalPressureLevelModerate = 20,
  47         kOSThermalPressureLevelHeavy = 30,
  48         kOSThermalPressureLevelTrapping = 40,
  49         kOSThermalPressureLevelSleeping = 50
  50 } OSThermalPressureLevel;
  51 #else
  52 typedef enum {
  53         kOSThermalPressureLevelNominal = 0,
  54         kOSThermalPressureLevelModerate,
  55         kOSThermalPressureLevelHeavy,
  56         kOSThermalPressureLevelTrapping,
  57         kOSThermalPressureLevelSleeping
  58 } OSThermalPressureLevel;
  59 #endif
  60
  61 /*
  62  ** External notify(3) string for thermal pressure level notification
  63  */
  64 __OSX_AVAILABLE_STARTING(__MAC_10_10, __IPHONE_7_0)
  65 extern const char * const kOSThermalNotificationPressureLevelName;
  66
  67
  68 #if defined(__IPHONE_OS_VERSION_MIN_REQUIRED) && \
  69         __IPHONE_OS_VERSION_MIN_REQUIRED >= __IPHONE_2_0
  70
  71 typedef enum {
  72         OSThermalNotificationLevelAny      = -1,
  73         OSThermalNotificationLevelNormal   =  0,
  74 } OSThermalNotificationLevel;
  75
  76 extern OSThermalNotificationLevel _OSThermalNotificationLevelForBehavior(int) __OSX_AVAILABLE_STARTING(__MAC_NA, __IPHONE_4_2);
  77 extern void _OSThermalNotificationSetLevelForBehavior(int, int) __OSX_AVAILABLE_STARTING(__MAC_NA, __IPHONE_4_2);
  78
  79 enum {
  80         kOSThermalMitigationNone,
  81         kOSThermalMitigation70PercentTorch,
  82         kOSThermalMitigation70PercentBacklight,
  83         kOSThermalMitigation50PercentTorch,
  84         kOSThermalMitigation50PercentBacklight,
  85         kOSThermalMitigationDisableTorch,
  86         kOSThermalMitigation25PercentBacklight,
  87         kOSThermalMitigationDisableMapsHalo,
  88         kOSThermalMitigationAppTerminate,
  89         kOSThermalMitigationDeviceRestart,
  90         kOSThermalMitigationThermalTableReady,
  91         kOSThermalMitigationCount
  92 };
  93
  94 #define OSThermalNotificationLevel70PercentTorch _OSThermalNotificationLevelForBehavior(kOSThermalMitigation70PercentTorch)
  95 #define OSThermalNotificationLevel70PercentBacklight _OSThermalNotificationLevelForBehavior(kOSThermalMitigation70PercentBacklight)
  96 #define OSThermalNotificationLevel50PercentTorch _OSThermalNotificationLevelForBehavior(kOSThermalMitigation50PercentTorch)
  97 #define OSThermalNotificationLevel50PercentBacklight _OSThermalNotificationLevelForBehavior(kOSThermalMitigation50PercentBacklight)
  98 #define OSThermalNotificationLevelDisableTorch _OSThermalNotificationLevelForBehavior(kOSThermalMitigationDisableTorch)
  99 #define OSThermalNotificationLevel25PercentBacklight _OSThermalNotificationLevelForBehavior(kOSThermalMitigation25PercentBacklight)
 100 #define OSThermalNotificationLevelDisableMapsHalo _OSThermalNotificationLevelForBehavior(kOSThermalMitigationDisableMapsHalo)
 101 #define OSThermalNotificationLevelAppTerminate _OSThermalNotificationLevelForBehavior(kOSThermalMitigationAppTerminate)
 102 #define OSThermalNotificationLevelDeviceRestart _OSThermalNotificationLevelForBehavior(kOSThermalMitigationDeviceRestart)
 103
 104 /* Backwards compatibility */
 105 #define OSThermalNotificationLevelWarning OSThermalNotificationLevel70PercentBacklight
 106 #define OSThermalNotificationLevelUrgent OSThermalNotificationLevelAppTerminate
 107 #define OSThermalNotificationLevelCritical OSThermalNotificationLevelDeviceRestart
 108
 109 /*
 110 ** Simple polling interface to detect current thermal level
 111 */
 112 __OSX_AVAILABLE_STARTING(__MAC_NA, __IPHONE_2_0)
 113 extern OSThermalNotificationLevel OSThermalNotificationCurrentLevel(void);
 114
 115 /*
 116 ** External notify(3) string for manual notification setup
 117 */
 118 __OSX_AVAILABLE_STARTING(__MAC_NA, __IPHONE_2_0)
 119 extern const char * const kOSThermalNotificationName;
 120
 121 /*
 122 ** External notify(3) string for alerting user of a thermal condition
 123 */
 124 __OSX_AVAILABLE_STARTING(__MAC_NA, __IPHONE_6_0)
 125 extern const char * const kOSThermalNotificationAlert;
 126
 127 /*
 128 ** External notify(3) string for notifying system the options taken to resolve thermal condition
 129 */
 130 __OSX_AVAILABLE_STARTING(__MAC_NA, __IPHONE_6_0)
 131 extern const char * const kOSThermalNotificationDecision;
 132
 133 #endif // __IPHONE_OS_VERSION_MIN_REQUIRED
 134
 135 __END_DECLS
 136
 137 #endif /* _OSTHERMALNOTIFICATION_H_ */