xutao
asked on
When To Call InitializeCriticalSection
In MSDN, it is said:
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The process is responsible for allocating the memory used by a critical section object, which it can do by declaring a variable of type CRITICAL_SECTION. Before using a critical section, some thread of the process must call the InitializeCriticalSection or InitializeCriticalSectionA
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Does it necessary for each thread which uses the critical section object to call InitializeCriticalSection before calling EnterCriticalSection?
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The process is responsible for allocating the memory used by a critical section object, which it can do by declaring a variable of type CRITICAL_SECTION. Before using a critical section, some thread of the process must call the InitializeCriticalSection or InitializeCriticalSectionA
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Does it necessary for each thread which uses the critical section object to call InitializeCriticalSection before calling EnterCriticalSection?
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Paul Maker
just create a global object of jkr's __critical_section and use it, its constructor will take care of setting it up.
ASKER
In fact, I use ATL's critical section class which does the same thing as jkr's class in my code.
Then the problem is some time when I tried to enter the critical section, an exception is thrown. I'm sure that the memory is enough and the STATUS_INVALID_HANDLE exception should not be raised. But the strange thing is after I using SEH to wrap the EnterCriticalSection call, nothing happened, why?
Then the problem is some time when I tried to enter the critical section, an exception is thrown. I'm sure that the memory is enough and the STATUS_INVALID_HANDLE exception should not be raised. But the strange thing is after I using SEH to wrap the EnterCriticalSection call, nothing happened, why?
>>after I using SEH to wrap the EnterCriticalSection call, nothing happened, why?
That's strange - could you post some code?
That's strange - could you post some code?
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Dear xutao
I think you forgot this question. I will ask Community Support to close it unless you finalize it within 7 days. You can always request to keep this question open. But remember, experts can only help you if you provide feedback to their questions.
Unless there is objection or further activity, I will suggest to
"PAQ at zero points"
since you never gave more feedback.
PLEASE DO NOT ACCEPT THIS COMMENT AS AN ANSWER!
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Werner
I think you forgot this question. I will ask Community Support to close it unless you finalize it within 7 days. You can always request to keep this question open. But remember, experts can only help you if you provide feedback to their questions.
Unless there is objection or further activity, I will suggest to
"PAQ at zero points"
since you never gave more feedback.
PLEASE DO NOT ACCEPT THIS COMMENT AS AN ANSWER!
======
Werner
Objection - I pretty much answered the question:
Comment
From: jkr Date: 04/24/2002 08:18AM PST
>>Does it necessary for each thread which uses the
>>critical section object to call
>>InitializeCriticalSectio
>>EnterCriticalSection?
No, you only have to do that once, not on a per thread basis. This little code snippet might help to automate that:
Comment
From: jkr Date: 04/24/2002 08:18AM PST
>>Does it necessary for each thread which uses the
>>critical section object to call
>>InitializeCriticalSectio
>>EnterCriticalSection?
No, you only have to do that once, not on a per thread basis. This little code snippet might help to automate that:
Force accepted
** Mindphaser - Community Support Moderator **
** Mindphaser - Community Support Moderator **