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c++lockingcritical-section
Alan
Alan

Reputation: 5189

What's the functioning scope of an critical section locker in c++?

// locks a critical section, and unlocks it automatically
// when the lock goes out of scope
CAutoLock(CCritSec * plock)

The above is from wxutil.h, does it lock the access of different process , or just locks different threads in the same process?

Upvotes: 0

Views: 988

Answers (1)

kennytm
kennytm

Reputation: 523234

Just across threads. From the doc of CAutoLock:

The CAutoLock constructor locks the critical section, ...

and CCritSec:

The CCritSec class provides a thread lock.

More explicitly, from the description of Critical Section Objects:

A critical section object provides synchronization similar to that provided by a mutex object, except that a critical section can be used only by the threads of a single process.

Upvotes: 2

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