How to set read lock and write lock in directshow application?

Question

To apply a general lock, I can do this:

CAutoLock(CCritSec * plock)

But how can I set read and write lock respectively?

score 0 · Answer 1 · edited May 23 '17 at 11:55

0

This post talks about using reader-writer locks.

edited May 23 '17 at 11:55

Community

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answered Aug 21 '10 at 09:09

Rishabh

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For directshow, there's already pretty nice locking primitives built-in, so I'd steer clear of any home-brewed/third-party stuff. – kidjan Sep 17 '10 at 00:14

score 0 · Answer 2 · answered Aug 21 '10 at 18:46

0

I would just use two separate locks...it might be possible otherwise tho.

answered Aug 21 '10 at 18:46

rogerdpack

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score 0 · Answer 3 · answered Sep 17 '10 at 00:12

Simply have two separate CCritSec objects:

CCritSec writeLock, readLock;

void Blah::SomeMethod()
{
    CAutoLock writeAutoLock( &writeLock );
    ...
}

void Blah::SomeOtherMethod()
{
    CAutoLock readAutoLock( &readLock );
}

You can also lock without the auto-lock class, but I wouldn't recommend it unless your functions/methods are short and there's no possible way you'd forget to unlock.

How to set read lock and write lock in directshow application?

3 Answers3