source: releases/Pester/1.1b1/Source/PSPowerManager.m@ 567

Last change on this file since 567 was 61, checked in by Nicholas Riley, 22 years ago

Pester 1.1b1.

PSPowerManager: Fixed delegate method selectors to better reflect what
is going on (Apple's docs in IOKit Fundamentals help with this; the
kIOMessage*Sleep constants are really poorly named).

VERSION: Updated for 1.1b1.

PSSpeechAlert.h: Fixed company name.

PSAlert.[hm]: Added -prepareForAlarm: to support PSWakeAlert.

PSTimer.[hm]: Replacement for NSTimer that works properly across
sleep/wake cycles and will schedule wake timers.

PSAlerts.[hm]: Added -prepareForAlarm: to support PSWakeAlert.

Read Me.rtfd: Updated for 1.1b1.

PSAlarm.[hm]: Added -setWakeUp:, invoke -[PSAlerts prepareForAlarm],
replaced alarm timer NSTimer with PSTimer.

PSApplication.[hm]: Replaced dock update timer NSTimer with PSTimer.
Uncovered some issues, need to fix later. Enable alarm discard for
beta release.

PSWakeAlert.[hm]: Shared alert implementation for wakeup. Doesn't do
anything at trigger time, but uses new preparation interface to work
at alarm set time (should work for repeating alarms too, but I didn't
bother to test...)

PSAlarmSetController.m: Added support for PSWakeAlert. Save default
alert information on quit. Removed debug statements on hide/unhide;
it works fine regardless of whether the app is explicitly hidden or
the window hides itself.

PSAlarms.m: PSTimer support - invoke +[PSTimer setUp] to initialize
timer list.

File size: 8.9 KB
Line 
1//
2// PSPowerManager.m
3// Pester
4//
5// Created by Nicholas Riley on Mon Dec 23 2002.
6// Copyright (c) 2002 Nicholas Riley. All rights reserved.
7//
8
9#import "PSPowerManager.h"
10
11#import <IOKit/pwr_mgt/IOPMLib.h>
12#import <IOKit/IOMessage.h>
13#import <CoreFoundation/CoreFoundation.h>
14
15/*
16 * Copyright (c) 2002 Apple Computer, Inc. All rights reserved.
17 *
18 * @APPLE_LICENSE_HEADER_START@
19 *
20 * The contents of this file constitute Original Code as defined in and
21 * are subject to the Apple Public Source License Version 1.1 (the
22 * "License"). You may not use this file except in compliance with the
23 * License. Please obtain a copy of the License at
24 * http://www.apple.com/publicsource and read it before using this file.
25 *
26 * This Original Code and all software distributed under the License are
27 * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
28 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
29 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
30 * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
31 * License for the specific language governing rights and limitations
32 * under the License.
33 *
34 * @APPLE_LICENSE_HEADER_END@
35 */
36
37/* Sample code to set an automatic wakeup timer to wake machines from sleep.
38
39When a machine is asleep, most hardware (including the processor) is
40powered off. The PMU chip is one of the few things left powered on, and it's
41able to generate a wakeup event on a timer.
42This code shows how to set the wakeup timer within the PMU.
43*/
44
45// From autowake.cpp:
46
47// #define kAppleVIAUserClientMagicCookie 0x101face // or 0x101beef -- for PMU
48// #define kAppleVIAUserClientMagicCookie 0x101beef // or 0x101face -- for PMU
49
50// The difference is 101beef is only for superusers and 101face works for
51// non-privileged users. I have not determined which calls are only available
52// for superusers
53
54#define PMU_MAGIC_PASSWORD 0x0101FACE // BEEF
55
56/* ==========================================
57* Close a device user client
58* =========================================== */
59static kern_return_t
60closeDevice(io_connect_t con)
61{
62 kern_return_t ret = IOServiceClose(con);
63
64 NSCAssert1(ret == kIOReturnSuccess, @"closeDevice: IOServiceClose returned an error of type %08lx", (unsigned long)ret);
65
66 return ret;
67}
68
69/* ==========================================
70* Open an IORegistry device user client
71* =========================================== */
72static void
73openDevice(io_object_t obj, unsigned int type, io_connect_t * con)
74{
75 kern_return_t ret = IOServiceOpen(obj, mach_task_self(), type, con);
76
77 NSCAssert1(ret == kIOReturnSuccess, @"openDevice: IOServiceOpen returned an error of type %08lx", (unsigned long)ret);
78}
79
80/* ===========================================
81* Changes the string for a registry
82* property.
83* =========================================== */
84void
85writeDataProperty(io_object_t handle, CFStringRef name,
86 unsigned char * bytes, unsigned int size)
87{
88 kern_return_t kr = kIOReturnNoMemory;
89 CFDataRef data;
90 CFMutableDictionaryRef dict = 0;
91
92 data = CFDataCreate(kCFAllocatorDefault, bytes, size);
93 NSCAssert(data != NULL, @"writeDataProperty: CFDataCreate failed");
94 [(NSData *)data autorelease];
95
96 dict = CFDictionaryCreateMutable(kCFAllocatorDefault, 1, &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks);
97 NSCAssert(data != NULL, @"writeDataProperty: CFDictionaryCreateMutable failed");
98 [(NSMutableDictionary *)dict autorelease];
99
100 CFDictionarySetValue(dict, name, data);
101 kr = IOConnectSetCFProperties(handle, dict);
102 NSCAssert1(kr == KERN_SUCCESS, @"writeDataProperty: IOConnectSetCFProperties returned an error of type %08lx", (unsigned long)kr);
103}
104
105/* ==========================================
106* Write a data property to the PMU driver
107* Arguments
108* pmuReference - the IORegistry device to write to
109* propertyName - Name of the property to write to
110* data - Data to write
111* dataSize - Data size
112* =========================================== */
113void
114writePMUProperty(io_object_t pmuReference, CFStringRef propertyName, void *data, size_t dataSize)
115{
116 io_connect_t conObj;
117 openDevice(pmuReference, PMU_MAGIC_PASSWORD, &conObj);
118 writeDataProperty(conObj, propertyName, (unsigned char *)data, dataSize);
119 closeDevice(conObj);
120}
121
122
123/* ==========================================
124* Look through the registry and search for an
125* IONetworkInterface objects with the given
126* name.
127* If a match is found, the object is returned.
128* =========================================== */
129
130io_service_t
131getInterfaceWithName(mach_port_t masterPort, char *className)
132{
133 io_service_t obj;
134
135 obj = IOServiceGetMatchingService(masterPort, IOServiceMatching(className));
136
137 NSCAssert(obj != NULL, @"getInterfaceWithName: IOServiceGetMatchingService returned NULL");
138
139 return obj;
140}
141
142/* ==========================================
143* Find the PMU in the IORegistry
144* =========================================== */
145io_service_t
146openPMUComPort(void)
147{
148 static mach_port_t masterPort;
149 kern_return_t kr;
150
151 // Get a master port to talk with the mach_kernel
152 kr = IOMasterPort(bootstrap_port, &masterPort);
153 NSCAssert1(kr == KERN_SUCCESS, @"openPMUComPort: IOMasterPort returned an error of type %08lx", (unsigned long)kr);
154
155 return getInterfaceWithName(masterPort, "ApplePMU");
156}
157
158
159/* ==========================================
160* Release our reference to the PMU in the IORegistry
161* =========================================== */
162void
163closePMUComPort(io_object_t pmuRef)
164{
165 IOObjectRelease(pmuRef);
166}
167
168@implementation PSPowerManager
169
170+ (BOOL)autoWakeSupported;
171{
172 io_service_t pmuReference = openPMUComPort();
173 if (pmuReference == NULL) return NO;
174 closePMUComPort(pmuReference);
175 return YES;
176}
177
178+ (NSDate *)wakeTime;
179{
180 io_service_t pmuReference = openPMUComPort();
181 NSNumber *autoWakeTime;
182 unsigned long long rawWakeTime;
183
184 NSAssert(pmuReference != NULL, @"Couldn’t find PMU in IORegistry. This computer may not support automatic wake from sleep.");
185 autoWakeTime = (NSNumber *)IORegistryEntryCreateCFProperty(pmuReference, CFSTR("AutoWake"), NULL, 0);
186 closePMUComPort(pmuReference);
187
188 if (autoWakeTime == nil) return nil;
189 rawWakeTime = [autoWakeTime unsignedLongLongValue];
190 if (rawWakeTime == 0) return nil;
191 // XXX no idea what the epoch is supposed to be, but this works...
192 return [NSDate dateWithTimeIntervalSinceReferenceDate: rawWakeTime - 18446744072475718320LLU];
193}
194
195+ (void)setWakeTime:(NSDate *)time;
196{
197 unsigned long wakeTime;
198 io_service_t pmuReference = openPMUComPort();
199 NSAssert(pmuReference != NULL, @"Couldn’t find PMU in IORegistry. This computer may not support automatic wake from sleep.");
200
201 if (time == nil) wakeTime = 0;
202 else {
203 wakeTime = [time timeIntervalSinceNow];
204 if (wakeTime == 0) wakeTime++; // 0 will disable
205 }
206 writePMUProperty(pmuReference, CFSTR("AutoWake"), (unsigned long *)&wakeTime, sizeof(wakeTime));
207
208 closePMUComPort(pmuReference);
209}
210
211+ (void)clearWakeTime;
212{
213 [self setWakeTime: nil];
214}
215
216// modified from RegisterForSleep sample code
217
218- (void)_messageReceived:(natural_t)messageType withArgument:(void *)messageArgument;
219{
220 switch (messageType) {
221 case kIOMessageSystemWillSleep:
222 if ([delegate respondsToSelector: @selector(powerManagerWillDemandSleep:)]) {
223 [delegate powerManagerWillDemandSleep: self];
224 IOAllowPowerChange(root_port, (long)messageArgument);
225 }
226 break;
227 case kIOMessageCanSystemSleep:
228 if ([delegate respondsToSelector: @selector(powerManagerShouldIdleSleep:)]) {
229 if ([delegate powerManagerShouldIdleSleep: self]) {
230 IOAllowPowerChange(root_port, (long)messageArgument);
231 } else {
232 IOCancelPowerChange(root_port, (long)messageArgument);
233 }
234 }
235 break;
236 case kIOMessageSystemHasPoweredOn:
237 if ([delegate respondsToSelector: @selector(powerManagerDidWake:)])
238 [delegate powerManagerDidWake: self];
239 break;
240 }
241}
242
243void
244powerCallback(void *refCon, io_service_t service, natural_t messageType, void *messageArgument)
245{
246 [(PSPowerManager *)refCon _messageReceived: messageType withArgument: messageArgument];
247}
248
249- (id)initWithDelegate:(id)aDelegate;
250{
251 if ( (self = [super init]) != nil) {
252 IONotificationPortRef notificationPort;
253
254 delegate = [aDelegate retain];
255 root_port = IORegisterForSystemPower(self, &notificationPort, powerCallback, &notifier);
256 NSAssert(root_port != NULL, @"IORegisterForSystemPower failed");
257
258 CFRunLoopAddSource(CFRunLoopGetCurrent(), IONotificationPortGetRunLoopSource(notificationPort), kCFRunLoopDefaultMode);
259 }
260 return self;
261}
262
263- (void)dealloc;
264{
265 IODeregisterForSystemPower(&notifier);
266 [delegate release];
267 [super dealloc];
268}
269
270@end
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