|
Linux Forum Index » Linux Development - Applications » select system call queries...
Page 1 of 1
|
| Author |
Message |
| arnab... |
 Posted: Wed Aug 13, 2008 12:23 am |
|
|
|
Guest
|
Hi All,
I have the following code snippet.
pthread_mutex_lock()
select()-> for read file descriptors with timeout of 25 sec
accept()
pthread_mutex_release()
I removed the locks of pthread_mutex_lock/and release as socket
libraries are thread safe.
Now my question is there a possibility of hang in the select function
when read file descriptors are not available?Also can the timeout of
25 sec contribute to the hang?
How can I check the read_fds are not available or the threshold is
being reached.
Any comments or suggestions would be very much appreciated.
Thanks
Arnab |
|
|
| Back to top |
|
| David Schwartz... |
| Posted: Wed Aug 13, 2008 9:13 am |
|
|
|
Guest
|
On Aug 13, 3:23 am, arnab <agangul... at (no spam) gmail.com> wrote:
Quote: Hi All,
I have the following code snippet.
pthread_mutex_lock()
select()-> for read file descriptors with timeout of 25 sec
accept()
pthread_mutex_release()
Yuck! Why?!
Quote: I removed the locks of pthread_mutex_lock/and release as socket
libraries are thread safe.
Good.
Quote: Now my question is there a possibility of hang in the select function
when read file descriptors are not available?Also can the timeout of
25 sec contribute to the hang?
I don't think I understand your question.
Quote: How can I check the read_fds are not available or the threshold is
being reached.
Any comments or suggestions would be very much appreciated.
I still don't understand. What's your question exactly?
DS |
|
|
| Back to top |
|
| ... |
| Posted: Sun Aug 31, 2008 7:02 pm |
|
|
|
Guest
|
On Aug 13, 6:23 am, arnab <agangul... at (no spam) gmail.com> wrote:
Quote: Hi All,
I have the following code snippet.
pthread_mutex_lock()
select()-> for read file descriptors with timeout of 25 sec
accept()
pthread_mutex_release()
I removed the locks of pthread_mutex_lock/and release as socket
libraries are thread safe.
Now my question is there a possibility of hang in the select function
when read file descriptors are not available?Also can the timeout of
25 sec contribute to the hang?
How can I check the read_fds are not available or the threshold is
being reached.
Any comments or suggestions would be very much appreciated.
Thanks
Arnab
Try 'select' with a timeout of 0 seconds if you really must use that
pattern. Why do you protect 'select' with a mutex? If that's *not*
what you're doing then you'll have a hard time convincing anyone that
the mutex is necessary.
Kevin P. Barry |
|
|
| Back to top |
|
| |
