ns3::CriticalSection Class Reference

A class which provides a simple way to implement a Critical Section. More...

#include <system-mutex.h>

Public Member Functions
	CriticalSection (SystemMutex &mutex)

Private Attributes
SystemMutex &	m_mutex

Detailed Description

A class which provides a simple way to implement a Critical Section.

When more than one SystemThread needs to access a shared resource, we control access by acquiring a SystemMutex. The CriticalSection class uses the C++ scoping rules to automatically perform the required Lock and Unlock operations to implement a Critical Section.

If one wants to treat an entire method call as a critical section, one would do something like,

Class::Method () { CriticalSection cs (mutex); ... }

In this case, the critical section is entered when the CriticalSection object is created, and the critical section is exited when the CriticalSection object goes out of scope at the end of the method.

Finer granularity is achieved by using local scope blocks.

Class::Method () { ... { CriticalSection cs (mutex); } ... }

Here, the critical section is entered partway through the method when the CriticalSection object is created in the local scope block (the braces). The critical section is exited when the CriticalSection object goes out of scope at the end of block.

See Also

SystemMutex

Definition at line 109 of file system-mutex.h.

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The documentation for this class was generated from the following files:

• src/core/model/system-mutex.h
• src/core/model/unix-system-mutex.cc