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Re: Mutex help 11 Years Ago by Moschops Each set locks a mutex, then changes the variable, then unlocks the mutex. Make sure the struct's internal variables are private so only the set function can change them. Mutex help 11 Years Ago by idnurr … two users can change the details at same time..using mutex to avoid locking .Kindly help me to frame this code… Re: mutex and semaphore 12 Years Ago by mike_2000_17 … somewhat less appropriate to do the same job as a mutex (although I guess it might be faster on some implementations…, if you use a binary semaphore, you basically get a mutex, without the guarantee that only the thread that locked the…, for the most part, if you need a mutex, just use a mutex. There are also uses for this property of semaphores… mutex and semaphore 12 Years Ago by Gaiety … through many but none explained the ownership property completely. > Mutex is acquired by some process, only that process can unlock… it how the other process/thread know that the mutex is not created him. > where as a binary semaphore… Re: Mutex help 11 Years Ago by idnurr Thanks for the response.Can u help me write this code as i am really new to this . Re: Mutex help 11 Years Ago by rubberman Sorry, but we don't do your homework for you... :-( C++ Improving my code - semaphores and mutex 15 Years Ago by hakan5 …? Where should I put the semaphors and mutex? */ #define PRODUCERS 20 #define CONSUMERS …re suppoes to be used //pthread_mutex_lock(&mutex); //pthread_mutex_unlock(&mutex); #define True 1 #define False …"); sem_destroy(&semaphore); pthread_mutex_destroy(&mutex); printf("All over.. now everything… Abandoned Mutex 14 Years Ago by CJdamaster …INITIATE> ############################# public static Mutex xmlMutex = new Mutex(true); // Create a mutex for XML file editing private void…[i] = temporary.InnerText; i++; } // Exit the mutex xmlMutex.ReleaseMutex(); return downloadList; } // ########################## </XML JOB… Run Only One Copy using Mutex 14 Years Ago by Momerath …line 14 where we attempt to create a Mutex. A Mutex is a form of a lock, but … continue before we know if we have the Mutex or not. If this method returns true, …then we have the Mutex and can proceed with our application. Otherwise we …want to make sure that we release the Mutex when the application ends, otherwise you won't… Re: Abandoned Mutex 14 Years Ago by Ketsuekiame Hi there, You have set your Mutex to be initially owned. This will cause it to wait on the first hit of xmlMutex.WaitOne(); As you never release it before you hit one, your code deadlocks. Where you create your Mutex on line 2, the parameter passed to the constructor should be "false". This should fix it. Re: Run Only One Copy using Mutex 14 Years Ago by CsharpChico …SingleApp { private static Boolean IsSingleAppMode; private static Mutex singleApp; private const Single waitTime = 3000; public….Run(mainForm); } private static Mutex InitializeSingleAppMode(Boolean result) { return new Mutex(result, "anydomain.com myprogramname… Regarding Mutex locks 12 Years Ago by myk45 … All, I have a small doubt w.r.t using mutex locks. Say we have a thread-safe function: int counter… safe because only one thread can "own" a mutex at a time and thus counter is incremented by only… Operating System unblocks the thread when it knows that the mutex has been released. Questions: 1) Is this understanding correct? 2… two processes + mutex + deadlock 13 Years Ago by ahp@aol.in …running simulteneously. 2. Process (P1) has already locked a mutex (M1). 3. Process (P2) is trying to lock same… 4. Now somehow process (P1) terminates or dies wihtout unlocking mutex (M1). 5. (P2) is still waiting for unlocking (M1).… dead now there is no other way to unlock the mutex. 6. In this situation, (P2) experiences a deadlock. … Find multiple instance using Mutex 17 Years Ago by eranga262154 … there any server running on specific IP. So, I used Mutex. Here what I have done. First get the each server… IP) { /* * No need to acquire or release the Mutex in .Net * */ IPMutex = new Mutex( true, IP + "_mutex_" ); //IPMutex.WaitOne(); if… Why use a mutex with condintions? 15 Years Ago by dumrat … and associated functions and I read that usually a mutex is used in conjunction with the condition when calling …or pthread_cond_signal/broadcast. The online texts only mention that the mutex is used for 'predictable behaviour'. Does this mean that… there's no need to use a mutex with a condition? Can someone explai what is going… Re: Why use a mutex with condintions? 15 Years Ago by dumrat Well, it seems that a call to pthread_cond_wait unlocks the mutex passed into it. Then when it returns (When the condition is signaled) it locks the corresponding mutex. so u have to unlock it manually. Well, this makes me to think that the need for the mutex is to make the operations on the condition variable thread safe. Re: Regarding Mutex locks 12 Years Ago by Symbiatch Yes, only one thread can run the code when the mutex is acquired. Also remember that in this (very simple) case … How to use Mutex and Semaphore functions? 14 Years Ago by sirko I need to make a program run just one copy of it using Mutex. But I coudn't find anything on using Mutex in c++. spinlock mutex usage examples 14 Years Ago by rkp728 Can anybody give some general examples of usage of spinlock where mutexes cannot be used? Also whats the difference between the spinlock and mutex? How to use mutex 14 Years Ago by aplh_ucsc hey guys! I need to know how to use pthreads with mutex to protect the critical section!! Re: How to use mutex 14 Years Ago by sree_ec [QUOTE=aplh_ucsc;1376079]hey guys! I need to know how to use pthreads with mutex to protect the critical section!![/QUOTE] read [URL="http://www.cs.cf.ac.uk/Dave/C/node31.html#SECTION003100000000000000000"]this[/URL] In ANSIC use semaphores and mutex? 14 Years Ago by blogoot In ANSIC use semaphores and mutex? How to exchange messages between the programs? Re: In ANSIC use semaphores and mutex? 14 Years Ago by Ancient Dragon What compiler? What operating system? Use of semiphores and mutex is operating system dependent. But neither of those will help … default value of a mutex 13 Years Ago by tubby123 … 2 doubts 1)what is the default value of a mutex ? Is it 0 or 1? 2)Why cant we have… Re: default value of a mutex 13 Years Ago by TrustyTony Check this: [url]http://www.merriam-webster.com/dictionary/doubt?show=0&t=1312659545[/url] You need atomic test and set. I do not know what you mean with default value of mutex. Usually I would think critical block is not locked at beginning, meaning value 0. binary semaphore and mutex 13 Years Ago by arunsolo1984 Whats the diff b/n binary semaphore and mutex? Error: Attempt To Release Mutex When Printing 13 Years Ago by mctabares … it fails with the following error, 'Error: Attempt To Release Mutex When Printing'. Has anyone encountered this problem and successfully resolved… semaphore/mutex 12 Years Ago by kesuke Can I use semaphore or mutex on MikroC? If you know , please tell me the function name or exsample code. Re: mutex and semaphore 12 Years Ago by WaltP Since the context of your second statement is unknown, and, as it stands, is false, I think you are confusing two different problems thinking they are the same. Re: C++11 Mutex for IPC? 12 Years Ago by mike_2000_17 …you can use the CreateEvent / SetEvent mechanism instead of a mutex. But, from Windows Vista and up, a more efficient … waiting thread is immediately woken up (and its associated mutex is locked). In other words, the CPU time scheduled… but short, latency) and with atomic swapping of the mutex locks. When you understand that, you also understand why …