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Top Forums Programming Count Number Of Threads in a Process Post 33183 by S.P.Prasad on Wednesday 18th of December 2002 11:59:42 PM
Old 12-19-2002
We are working on SunOS Rel 5.8.Infact I have worked on the method - counting the number of subdirectories in the /proc/[pid]/lwp by using the following algorithm :

.......
/* After I have found the pid of the required process */
sprintf ( Dir , "/proc/%d/lwp" , pid ) ;
if ( ! chdir ( Dir ) ) {
Counter = 0 ;
if ((dp = opendir ( Dir ))!= NULL) {
while((dirp=readdir(dp))!=NULL)
if(dirp->d_name[0]!='.') Counter ++ ;
}
}
.......
I get the right count of subdirectories in the variable Counter. But the threads created in the program does not matches in number to subdirectories in /proc/[pid]/lwp. For example in an application I have created two thread by using pthread_create but number of subdirectories created in lwp directory for that process is five.I am not able to figure it as to why this difference exists.
 

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Test::Dir(3pm)						User Contributed Perl Documentation					    Test::Dir(3pm)

NAME
Test::Dir - test directory attributes SYNOPSIS
use Test::More ...; use Test::Dir; DESCRIPTION
This modules provides a collection of test utilities for directory attributes. Use it in combination with Test::More in your test programs. FUNCTIONS
dir_exists_ok(DIRNAME [, TESTNAME] ) Ok if the directory exists, and not ok otherwise. dir_not_exists_ok(DIRNAME [, TESTNAME] ) Ok if the directory does not exist, and not ok otherwise. dir_empty_ok(DIRNAME [, TESTNAME] ) Ok if the directory is empty (contains no files or subdirectories), and not ok otherwise. dir_not_empty_ok(DIRNAME [, TESTNAME] ) Ok if the directory is not empty, and not ok otherwise. dir_readable_ok(DIRNAME [, TESTNAME] ) Ok if the directory is readable, and not ok otherwise. dir_not_readable_ok(DIRNAME [, TESTNAME] ) Ok if the directory is not readable, and not ok otherwise. dir_writable_ok(DIRNAME [, TESTNAME] ) Ok if the directory is writable, and not ok otherwise. dir_not_writable_ok(DIRNAME [, TESTNAME] ) Ok if the directory is not writable, and not ok otherwise. dir_executable_ok(DIRNAME [, TESTNAME] ) Ok if the directory is executable, and not ok otherwise. dir_not_executable_ok(DIRNAME [, TESTNAME] ) Ok if the directory is not executable, and not ok otherwise. TO DO
I know there are a lot more directory attributes that can be tested. If you need them, please ask (or better yet, contribute code!). AUTHOR
Martin 'Kingpin' Thurn, "mthurn at cpan.org", <http://tinyurl.com/nn67z>. BUGS
Please report any bugs or feature requests to "bug-test-dir at rt.cpan.org", or through the web interface at <http://rt.cpan.org/NoAuth/ReportBug.html?Queue=Test-Dir>. I will be notified, and then you'll automatically be notified of progress on your bug as I make changes. SUPPORT
You can find documentation for this module with the perldoc command. perldoc Test::Dir You can also look for information at: o RT: CPAN's request tracker <http://rt.cpan.org/NoAuth/Bugs.html?Dist=Test-Dir> o AnnoCPAN: Annotated CPAN documentation <http://annocpan.org/dist/Test-Dir> o CPAN Ratings <http://cpanratings.perl.org/d/Test-Dir> o Search CPAN <http://search.cpan.org/dist/Test-Dir> ACKNOWLEDGEMENTS
COPYRIGHT &; LICENSE Copyright (C) 2007-2008 Martin 'Kingpin' Thurn This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself. perl v5.10.1 2011-03-05 Test::Dir(3pm)
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