Mutex & Semaphore

[muthuis]

Can some body explain & give some sample code for the following synchronization objects.
1. Mutexes
2. Semaphores

The code can be in MFC/SDK.

[Andreas Masur]

A mutex is also a semaphore therefore is would be hard to explain where are the differences. ;-) Nevertheless synchronization is a important issue when it comes down to multithreaded applications. Synchronization is needed when access to a resource must be controlled to ensure integrity of the resource. Synchronization access objects are used to gain access to these controlled resources.

There are several objects depending on the operation system. In Windows MFC provides wrapper classes for critical sections, mutex, events etc.

Take a look at the following:

http://www.codeguru.com/cgi-bin/bbs/wt/showpost.pl?Board=vc&Number=322125
http://www.codeguru.com/cgi-bin/bbs/wt/showpost.pl?Board=vc&Number=328935

These are two examples how to use critical sections and mutexes...

Ciao, Andreas

"Software is like sex, it's better when it's free." - Linus Torvalds

[myron]

Semaphore resource can have more than one acess, while Mutex can just have one.

[Marc G]

[ moved thread ]

[Marc G]

Why are you bringing several ancient threads back to life :confused: