1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
|
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is mozilla.org code.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 2001
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Stuart Parmenter <pavlov@netscape.com>
*
* Alternatively, the contents of this file may be used under the terms of
* either of the GNU General Public License Version 2 or later (the "GPL"),
* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#ifndef nsTimerImpl_h___
#define nsTimerImpl_h___
//#define FORCE_PR_LOG /* Allow logging in the release build */
#include "nsITimer.h"
#include "nsVoidArray.h"
#include "nsIThread.h"
#include "nsITimerInternal.h"
#include "nsIObserver.h"
#include "nsCOMPtr.h"
#include "prlog.h"
#if defined(PR_LOGGING)
static PRLogModuleInfo *gTimerLog = PR_NewLogModule("nsTimerImpl");
#define DEBUG_TIMERS 1
#else
#undef DEBUG_TIMERS
#endif
#define NS_TIMER_CLASSNAME "Timer"
#define NS_TIMER_CID \
{ /* 5ff24248-1dd2-11b2-8427-fbab44f29bc8 */ \
0x5ff24248, \
0x1dd2, \
0x11b2, \
{0x84, 0x27, 0xfb, 0xab, 0x44, 0xf2, 0x9b, 0xc8} \
}
enum {
CALLBACK_TYPE_UNKNOWN = 0,
CALLBACK_TYPE_INTERFACE = 1,
CALLBACK_TYPE_FUNC = 2,
CALLBACK_TYPE_OBSERVER = 3
};
// Two timer deadlines must differ by less than half the PRIntervalTime domain.
#define DELAY_INTERVAL_LIMIT PR_BIT(8 * sizeof(PRIntervalTime) - 1)
// Maximum possible delay (XXX rework to use ms rather than interval ticks).
#define DELAY_INTERVAL_MAX (DELAY_INTERVAL_LIMIT - 1)
// Is interval-time t less than u, even if t has wrapped PRIntervalTime?
#define TIMER_LESS_THAN(t, u) ((t) - (u) > DELAY_INTERVAL_LIMIT)
class nsTimerImpl : public nsITimer, public nsITimerInternal
{
public:
nsTimerImpl();
static NS_HIDDEN_(nsresult) Startup();
static NS_HIDDEN_(void) Shutdown();
friend class TimerThread;
void Fire();
void PostTimerEvent();
void SetDelayInternal(PRUint32 aDelay);
NS_DECL_ISUPPORTS
NS_DECL_NSITIMER
NS_DECL_NSITIMERINTERNAL
PRInt32 GetGeneration() { return mGeneration; }
private:
~nsTimerImpl();
nsresult InitCommon(PRUint32 aType, PRUint32 aDelay);
void ReleaseCallback()
{
if (mCallbackType == CALLBACK_TYPE_INTERFACE)
NS_RELEASE(mCallback.i);
else if (mCallbackType == CALLBACK_TYPE_OBSERVER)
NS_RELEASE(mCallback.o);
}
nsCOMPtr<nsIThread> mCallingThread;
void * mClosure;
union {
nsTimerCallbackFunc c;
nsITimerCallback * i;
nsIObserver * o;
} mCallback;
// These members are set by Init (called from NS_NewTimer) and never reset.
PRUint8 mCallbackType;
PRPackedBool mIdle;
// These members are set by the initiating thread, when the timer's type is
// changed and during the period where it fires on that thread.
PRUint8 mType;
PRPackedBool mFiring;
// Use a PRBool (int) here to isolate loads and stores of these two members
// done on various threads under the protection of TimerThread::mLock, from
// loads and stores done on the initiating/type-changing/timer-firing thread
// to the above PRUint8/PRPackedBool members.
PRBool mArmed;
PRBool mCanceled;
// The generation number of this timer, re-generated each time the timer is
// initialized so one-shot timers can be canceled and re-initialized by the
// arming thread without any bad race conditions.
PRInt32 mGeneration;
PRUint32 mDelay;
PRIntervalTime mTimeout;
#ifdef DEBUG_TIMERS
PRIntervalTime mStart, mStart2;
static double sDeltaSum;
static double sDeltaSumSquared;
static double sDeltaNum;
#endif
};
#define NS_TIMERMANAGER_CONTRACTID "@mozilla.org/timer/manager;1"
#define NS_TIMERMANAGER_CLASSNAME "Timer Manager"
#define NS_TIMERMANAGER_CID \
{ /* 4fe206fa-1dd2-11b2-8a0a-88bacbecc7d2 */ \
0x4fe206fa, \
0x1dd2, \
0x11b2, \
{0x8a, 0x0a, 0x88, 0xba, 0xcb, 0xec, 0xc7, 0xd2} \
}
#include "nsITimerManager.h"
class nsTimerManager : nsITimerManager
{
public:
nsTimerManager();
NS_DECL_ISUPPORTS
NS_DECL_NSITIMERMANAGER
nsresult AddIdleTimer(nsITimer* timer);
private:
~nsTimerManager();
PRLock *mLock;
nsVoidArray mIdleTimers;
};
#endif /* nsTimerImpl_h___ */
|
