1 | /* |
2 | * Copyright (C) 2008 Apple Inc. All rights reserved. |
3 | * |
4 | * Redistribution and use in source and binary forms, with or without |
5 | * modification, are permitted provided that the following conditions |
6 | * are met: |
7 | * |
8 | * 1. Redistributions of source code must retain the above copyright |
9 | * notice, this list of conditions and the following disclaimer. |
10 | * 2. Redistributions in binary form must reproduce the above copyright |
11 | * notice, this list of conditions and the following disclaimer in the |
12 | * documentation and/or other materials provided with the distribution. |
13 | * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of |
14 | * its contributors may be used to endorse or promote products derived |
15 | * from this software without specific prior written permission. |
16 | * |
17 | * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY |
18 | * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
19 | * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
20 | * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY |
21 | * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
22 | * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
23 | * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
24 | * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
27 | */ |
28 | |
29 | #ifndef TimeoutChecker_h |
30 | #define TimeoutChecker_h |
31 | |
32 | #include <wtf/Assertions.h> |
33 | |
34 | namespace JSC { |
35 | |
36 | class ExecState; |
37 | |
38 | class TimeoutChecker { |
39 | public: |
40 | TimeoutChecker(); |
41 | virtual ~TimeoutChecker(); |
42 | |
43 | void setTimeoutInterval(unsigned timeoutInterval) { m_timeoutInterval = timeoutInterval; } |
44 | void setCheckInterval(unsigned checkInterval) { if (checkInterval) m_intervalBetweenChecks = checkInterval; } |
45 | |
46 | unsigned ticksUntilNextCheck() { return m_ticksUntilNextCheck; } |
47 | |
48 | void start() |
49 | { |
50 | if (!m_startCount) |
51 | reset(); |
52 | ++m_startCount; |
53 | } |
54 | |
55 | void stop() |
56 | { |
57 | ASSERT(m_startCount); |
58 | --m_startCount; |
59 | } |
60 | |
61 | void reset(); |
62 | void copyTimeoutValues(TimeoutChecker* other); |
63 | |
64 | virtual bool didTimeOut(ExecState*); |
65 | |
66 | private: |
67 | unsigned m_timeoutInterval; |
68 | unsigned m_timeAtLastCheck; |
69 | unsigned m_timeExecuting; |
70 | unsigned m_startCount; |
71 | unsigned m_ticksUntilNextCheck; |
72 | unsigned m_intervalBetweenChecks; |
73 | }; |
74 | |
75 | } // namespace JSC |
76 | |
77 | #endif // TimeoutChecker_h |
78 | |