Can Mutex be replaced with anything? Post: 302383087

10 More Discussions You Might Find Interesting

1. Programming

Threads and Mutex

Hi all, I am working in a UNIX/C environment. I would like to understand more about MUTEX and Threads. Can someone explain me these concepts and how they are related. Vijay

2. UNIX for Dummies Questions & Answers

mutex

Can anyone explain me what mutexes are in multithreading environment?

3. Shell Programming and Scripting

mutex in shell programing

A shell in crontab per 5 min write a file B shell in crontab per 6 min read a file how to lock the share file a ;avioid confilict in write and read? Thx : -)

4. Programming

Hi, I have two tasks 'Read' and 'Write' which reads and writes on a file "abc.txt" respectively. Now I need to restrict the Write operation on the file while Read is going on, But can allow two Reads at a time. ie. two Reads can happen simultaneously, but Write can't happen at Read is going on. ...

5. Programming

difference between Mutex and semaphores

Hi, can someone explain me the difference between mutex and semaphores? Thanks

6. UNIX for Dummies Questions & Answers

what is diff b/w semaphore and mutex

can u tell me what is the exact difference b/w mutex and semaphore and what is the diff b/w counting semaphore and binary semaphore amit

7. Shell Programming and Scripting

Mutex in Perl

Hello Everyone, I just joined this forum and this is my first post. I would like to know how can I impliment basic read/write locks in perl. I have a database (file) which can be accessed simultaneously but has to be locked while writing. If there is no such support in perl, my next...

8. Programming

Mutex will not work

I am trying to use mutex in my multi-tread project, but they don't seem to work. I have created a simple demonstration of the problem. This is NOT how I would use a mutex, only a demonstration of the problem: #include <stdio.h> #include <pthread.h> int main() { int val; ...

9. Programming

Mutex lock question

Hi all, I have a scenario where I need to use the mutex locks. The mutex locks are working fine, but sometimes I am getting into the dead lock situation. Below is the summary of my code : MUTEX LOCK performTask(); MUTEX UNLOCK. In some cases I get into the situation where...

10. Programming

pthread and mutex question

Hello, I have got some issue with the struct variable with passed arguments the variable in the sturct is only recognize the last value their assigned to I'm pretty confused why the mutex didn't work out here is my program: #include<stdio.h> #include<pthread.h> pthread_mutex_t lock...

LEARN ABOUT FREEBSD

pthread_mutex_trylock

PTHREAD_MUTEX_TRYLOCK(3)				   BSD Library Functions Manual 				  PTHREAD_MUTEX_TRYLOCK(3)

NAME

     pthread_mutex_trylock -- attempt to lock a mutex without blocking

LIBRARY

     POSIX Threads Library (libpthread, -lpthread)

SYNOPSIS

     #include <pthread.h>

     int
     pthread_mutex_trylock(pthread_mutex_t *mutex);

DESCRIPTION

     The pthread_mutex_trylock() function locks mutex.	If the mutex is already locked, pthread_mutex_trylock() will not block waiting for the
     mutex, but will return an error condition.

RETURN VALUES

     If successful, pthread_mutex_trylock() will return zero, otherwise an error number will be returned to indicate the error.

ERRORS

     The pthread_mutex_trylock() function will fail if:

     [EINVAL]		The value specified by mutex is invalid.

     [EBUSY]		Mutex is already locked.

SEE ALSO

     pthread_mutex_destroy(3), pthread_mutex_init(3), pthread_mutex_lock(3), pthread_mutex_unlock(3)

STANDARDS

     The pthread_mutex_trylock() function conforms to ISO/IEC 9945-1:1996 (``POSIX.1'').

BSD
								   July 30, 1998							       BSD

10 More Discussions You Might Find Interesting

1. Programming

Threads and Mutex

Discussion started by: vthasan

2. UNIX for Dummies Questions & Answers

mutex

Discussion started by: sagar

3. Shell Programming and Scripting

mutex in shell programing

Discussion started by: zz_xm

4. Programming

How to handle mutex lock?

Discussion started by: satheeshalle