source: trunk/Cocoa/Pester/Source/PSTimer.m@ 92

Last change on this file since 92 was 64, checked in by Nicholas Riley, 22 years ago

PSTimer.m: Only remove valid alarms from alarm list.

PSAlarms.m: Initialize PSTimer before restoring alarms - fixes startup
crash reported by Philippe Martin.

Read Me.rtfd: Removed obsolete entry from known bugs. Updated for
Pester 1.1b2.

VERSION: Updated for Pester 1.1b2.

File size: 6.6 KB
Line 
1//
2// PSTimer.m
3// Pester
4//
5// Created by Nicholas Riley on Sun Jan 05 2003.
6// Copyright (c) 2003 Nicholas Riley. All rights reserved.
7//
8
9#import "PSTimer.h"
10#import "PSAlarm.h"
11#import "PSPowerManager.h"
12
13NSTimer *PSTimerCurrent = nil;
14PSTimer *PSTimerOnWake = nil;
15NSMutableArray *PSTimerAllTimers = nil;
16
17@interface PSTimer (Private)
18+ (void)_schedule;
19@end
20
21@implementation PSTimer
22
23+ (void)setUp;
24{
25 static PSPowerManager *powerManager;
26
27 if (powerManager == nil) {
28 powerManager = [[PSPowerManager alloc] initWithDelegate: self];
29 PSTimerAllTimers = [[NSMutableArray alloc] init];
30 }
31}
32
33+ (void)_schedule;
34{
35 NSDate *aboutNow = [NSDate dateWithTimeIntervalSinceNow: 0.1];
36 [PSTimerCurrent invalidate]; [PSTimerCurrent release]; PSTimerCurrent = nil;
37 PSTimerOnWake = nil;
38 if ([PSTimerAllTimers count] > 0) {
39 PSTimer *timer = nil;
40 NSEnumerator *e;
41 [PSTimerAllTimers sortUsingSelector: @selector(compare:)];
42 // NSLog(@"_schedule: timers %@", [PSTimerAllTimers description]);
43 e = [PSTimerAllTimers objectEnumerator];
44 while ( (timer = [e nextObject]) != nil) {
45 if ([timer isWakeUp]) {
46 PSTimerOnWake = timer;
47 // NSLog(@"scheduling wake timer %@", timer);
48 break;
49 }
50 }
51 e = [PSTimerAllTimers objectEnumerator];
52 while ( (timer = [e nextObject]) != nil) {
53 if ([[timer fireDate] compare: aboutNow] != NSOrderedDescending) {
54 [timer performSelector: @selector(_timerExpired) withObject: nil afterDelay: 0];
55 return;
56 } else {
57 NSTimeInterval ti = [[timer fireDate] timeIntervalSinceNow];
58 if (ti > 0.1) {
59 PSTimerCurrent = [[NSTimer scheduledTimerWithTimeInterval: ti target: timer selector: @selector(_timerExpired) userInfo: nil repeats: NO] retain];
60 // NSLog(@"setting timer: %@", PSTimerCurrent);
61 } else {
62 // NSLog(@"timer would have been too fast, setting: %@", timer);
63 [timer performSelector: @selector(_timerExpired) withObject: nil afterDelay: 0];
64 }
65 return;
66 }
67 }
68 NSAssert(NO, @"shouldn’t get here");
69 } else {
70 // NSLog(@"_schedule: no timers");
71 }
72}
73
74+ (void)_timerAdded:(PSTimer *)timer;
75{
76 NSAssert1([PSTimerAllTimers indexOfObject: timer] == NSNotFound, @"PSTimerAllTimers already contains %@", timer);
77 [PSTimerAllTimers addObject: timer];
78 [self _schedule];
79}
80
81+ (void)_timerDeleted:(PSTimer *)timer;
82{
83 NSAssert1([PSTimerAllTimers indexOfObject: timer] != NSNotFound, @"PSTimerAllTimers does not contain %@", timer);
84 [PSTimerAllTimers removeObject: timer];
85 [self _schedule];
86}
87
88#pragma mark private
89
90- (void)_setFireDate:(NSDate *)date;
91{
92 if (fireDate != date) {
93 [fireDate release];
94 fireDate = [date retain];
95 if (fireDate != nil) {
96 isValid = YES;
97 }
98 }
99}
100
101- (void)_setFireDateFromInterval;
102{
103 [self _setFireDate: [NSDate dateWithTimeIntervalSinceNow: timeInterval]];
104}
105
106- (void)_invalidate;
107{
108 if (isValid) {
109 isValid = NO;
110 [[self class] _timerDeleted: self];
111 }
112}
113
114- (void)_timerExpired;
115{
116 if (!isValid) return; // in case the timer went off after we were invalidated
117 [self retain]; // make sure we’re still accessible during the invocation
118 // NSLog(@"timer expired: %@", self);
119 if (repeats) {
120 [invocation invoke];
121 if (isValid) {
122 [self _setFireDateFromInterval];
123 [[self class] _schedule];
124 // NSLog(@"timer repeats: %@", self);
125 }
126 } else {
127 [self _invalidate];
128 [invocation invoke];
129 }
130 [self release];
131}
132
133#pragma mark initialize-release
134
135- (id)initWithTimeInterval:(NSTimeInterval)ti target:(id)aTarget selector:(SEL)aSelector userInfo:(id)anObject repeats:(BOOL)yesOrNo;
136{
137 if ( (self = [self init]) != nil) {
138 invocation = [[NSInvocation invocationWithMethodSignature:
139 [aTarget methodSignatureForSelector: aSelector]] retain];
140 [invocation setSelector: aSelector];
141 [invocation setTarget: aTarget];
142 [invocation setArgument: &self atIndex: 2];
143 userInfo = [anObject retain];
144 repeats = yesOrNo;
145 timeInterval = ti;
146 [invocation retainArguments]; // mimics retain behavior
147 [self _setFireDateFromInterval];
148 [[self class] _timerAdded: self]; // mimics runloop retention behavior
149 }
150 return self;
151}
152
153+ (PSTimer *)scheduledTimerWithTimeInterval:(NSTimeInterval)ti target:(id)aTarget selector:(SEL)aSelector userInfo:(id)anObject repeats:(BOOL)yesOrNo;
154{
155 PSTimer *timer = [[self alloc] initWithTimeInterval: ti target: aTarget selector: aSelector userInfo: anObject repeats: yesOrNo];
156 [timer release];
157 return timer;
158}
159
160- (void)dealloc;
161{
162 // NSLog(@"DEALLOC %@", self);
163 isValid = NO;
164 [fireDate release]; fireDate = nil;
165 [invocation release]; invocation = nil;
166 [userInfo release]; userInfo = nil;
167 [super dealloc];
168}
169
170#pragma mark accessing
171
172- (NSDate *)fireDate;
173{
174 return fireDate;
175}
176
177- (void)invalidate;
178{
179 repeats = NO;
180 [self _invalidate];
181}
182
183- (BOOL)isValid;
184{
185 return isValid;
186}
187
188- (id)userInfo;
189{
190 return userInfo;
191}
192
193- (BOOL)isWakeUp;
194{
195 return isWakeUp;
196}
197
198- (void)setWakeUp:(BOOL)doWake;
199{
200 isWakeUp = doWake;
201}
202
203- (NSComparisonResult)compare:(PSTimer *)other;
204{
205 return [fireDate compare: [other fireDate]];
206}
207
208- (NSString *)description;
209{
210 return [NSString stringWithFormat: @"%@: at %@ do %@ on %@", [super description], [self fireDate], NSStringFromSelector([invocation selector]), [[invocation target] class]];
211}
212
213@end
214
215@implementation PSTimer (PSPowerManagerDelegate)
216
217+ (BOOL)powerManagerShouldIdleSleep:(PSPowerManager *)powerManager;
218{
219 [PSTimerCurrent invalidate];
220 if (PSTimerOnWake != nil) {
221 NSDate *date = [PSTimerOnWake fireDate];
222 // NSLog(@"%lf sec remain until alarm", [date timeIntervalSinceNow]);
223 if ([date timeIntervalSinceNow] > 30) {
224 // NSLog(@"going to sleep, setting timer %@", PSTimerOnWake);
225 [PSPowerManager setWakeTime: [[PSTimerOnWake fireDate] addTimeInterval: -15]];
226 return YES;
227 } else {
228 // NSLog(@"not setting timer, will attempt to prevent idle sleep");
229 return NO;
230 }
231 }
232 return YES;
233}
234
235+ (void)powerManagerWillDemandSleep:(PSPowerManager *)powerManager;
236{
237 [self powerManagerShouldIdleSleep: powerManager];
238 return;
239}
240
241+ (void)powerManagerDidWake:(PSPowerManager *)powerManager;
242{
243 if (PSTimerCurrent != nil) {
244 [self _schedule];
245 }
246}
247
248@end
Note: See TracBrowser for help on using the repository browser.