Threads and Mutex Post: 9069

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

mutex

Can anyone explain me what mutexes are in multithreading environment?

2. 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 : -)

3. 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. ...

4. Programming

difference between Mutex and semaphores

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

5. 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

6. 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...

7. 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; ...

8. 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...

9. Programming

Can Mutex be replaced with anything?

Hi All, To avoid race condition, instead of using mutex, semaphore, spinlock etc.... Is there any other mechanism by which we can avoid race condition in an multi-threading environment. -Thanks

10. Programming

Number of threads waiting on a pthread mutex/rwlock

Using pthreads is there a way to determine how many threads are waiting on a locked resource? I mean, once a shared resource is protected using e.g. pthread_rwlock_t or pthread_mutex_t one thread grabs the lock and other threads will go to sleep waiting for the resource to be available again. Is...

LEARN ABOUT OSF1

unix2dos

unix2dos(1)						      General Commands Manual						       unix2dos(1)

NAME

       unix2dos - mtools utility to convert a UNIX file to DOS format

SYNOPSIS

       unix2dos unixfile

OPTIONS

       None

OPERANDS

       Name of the file to convert.

DESCRIPTION

       The unix2dos command converts a file from UNIX format to DOS format.  The converted file replaces the original file.

       Subdirectory  names  that contain the '/' or '' separator are supported.  If you use the '' separator or wildcards, you must enclose file
       names in quotes to protect them from the shell.

       The mcd command can be used to establish the device and the current working directory (relative to DOS), otherwise the default is A:.

EXIT STATUS

       The following exit values are returned: Success.  Failure.

ENVIRONMENT VARIABLES

       The following environment variables affect the execution of unix2dos: If set, this variable names the file that contains the  name  of  the
       current mtools working directory as established by the mcd command.  If this variable is not set, the file $HOME/.mcwd is used.

FILES

       Contains  the  name  of	the  current mtools working directory as established by the mcd command.  If this file does not exist, the default
       mtools working directory is A:.  Executable file

SEE ALSO

       Commands:  mcopy(1), mread(1), mtools(1) mtype(1), mwrite(1)

																       unix2dos(1)

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

mutex

Discussion started by: sagar

2. Shell Programming and Scripting

mutex in shell programing

Discussion started by: zz_xm

3. Programming

How to handle mutex lock?

Discussion started by: satheeshalle