Skip Menu |
 

This queue is for tickets about the Proc-ProcessTable CPAN distribution.

Report information
The Basics
Id: 1683
Status: resolved
Priority: 0/
Queue: Proc-ProcessTable

People
Owner: Nobody in particular
Requestors: likong [...] email.com
Cc:
AdminCc:

Bug Information
Severity: Important
Broken in: 0.35
Fixed in: (no value)



Subject: running ProcessTable in multi-thread environment
Download (untitled) / with headers
text/plain 1.3k
Environment: 1. ProcessTable 0.35 2. Solaris 2.6, sun4u, sparc10 3. perl 5.6.1 sun4-solaris-thread-multi. I am trying to use the Proc::ProcessTable module in a multi-threaded environemnt where each thread has one perl engine, and each perl engine executes a scipt which may access to Proc::ProcessTable module. (The perl engine is built with ithread and threads.) 1. readdir() in Solaris.c should be changed to readdir_r for multi-threaded apps (at least for Solaris). 2. From time to time, I got the following messages from stderr. The frequency of the 1st msg is much higher than that of the 2nd msg. Attempt to free non-existent shared string at (eval 4) line 60. Attempt to free non-existent shared string at /usr/netiq/UnixAgent/lib/perl5/site_perl/5.6.1/sun4-solaris-thread-multi/Proc/ProcessTable.pm line 118. Line 60 in ProcessTable.pm is $self->p{cache_ttys} = 1 in new(), and line 118 in ProcessTable.pm is undef %Proc::ProcessTable::TTYDEVS; in _get_tty_list(). 3. Even with the fix of readdir_r(), I got core dump frequently. 3.1 I even serialized the invocation of OS_get_table by using a mutex, still got core dump. 3.2 The symbol PROC_FS is on for solaris 2.6. Even if I took out PROC_FS, still got core dump. Did any one have experiences with running ProcessTable from a multi-threaded environment? Any hints and pointers would be appreciated.
I guess this old bug is solved. If not, we can reopen it again.


This service is sponsored and maintained by Best Practical Solutions and runs on Perl.org infrastructure.

Please report any issues with rt.cpan.org to rt-cpan-admin@bestpractical.com.