ns3::CriticalSection Class Reference

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

#include <system-mutex.h>

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List of all members.

Public Member Functions

 CriticalSection (SystemMutex &mutex)
 ~CriticalSection ()

Private Attributes

SystemMutexm_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 conrol 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.


Constructor & Destructor Documentation

ns3::CriticalSection::CriticalSection ( SystemMutex mutex  ) 

Definition at line 126 of file unix-system-mutex.cc.

References ns3::SystemMutex::Lock(), m_mutex, and NS_LOG_FUNCTION_NOARGS.

ns3::CriticalSection::~CriticalSection (  ) 

Definition at line 133 of file unix-system-mutex.cc.

References m_mutex, NS_LOG_FUNCTION_NOARGS, and ns3::SystemMutex::Unlock().


Member Data Documentation

Definition at line 115 of file system-mutex.h.

Referenced by CriticalSection(), and ~CriticalSection().


The documentation for this class was generated from the following files:
Generated on Thu Dec 3 14:10:34 2009 for NS-3 by  doxygen 1.6.3