win32utils devel - May 2006 - seg on windows-pr-0.5.1 (was RE: win32-eventlog 0.4.0)

Pe?a wrote:
> Hi Dan,
> i get a segfault on windows-pr if i run mulitple tails by threading, one
thread for each host i''m tailing.
> 
> C:\family\ruby\win-eventlog>dtail.rb
> thread/tail-ing Security on host1
> thread/tail-ing Security on host2
> thread/tail-ing Security on host3
> thread/tail-ing Security on host4
> thread/tail-ing Security on host5
> thread/tail-ing Security on host6
>
c:/ruby/lib/ruby/gems/1.8/gems/windows-pr-0.5.1-mswin32/lib/windows/error.rb:295:
[BUG] Segmentation fault
> ruby 1.8.4 (2005-12-24) [i386-mswin32]
> C:\family\ruby\win-eventlog>
> 
> my code looks like,
> 
> #---
>    threads = []
>    while x = DATA.gets do
>       eventlog,host = x.split
>       printf "thread/tail-ing %s on %s\n",eventlog,host
>       threads << Thread.new(eventlog,host) do |log,host|
>             tail_log log,host
>          end
>       #tail_log  eventlog, host
>    end
>    threads.each {|t| t.join}
> #---
> 
> is tail thread-safe or do i need to run it separately for each host for the
mean time?
Wow, I never imagined folks running a series of eventlogs in different 
threads.

Anyone have any ideas on this?

Dan

Hi,

2006/5/30, Daniel Berger <djberg96 at gmail.com>:
> Pe?a wrote:
> > Hi Dan,
> > i get a segfault on windows-pr if i run mulitple tails by threading,
one thread for each host i''m tailing.
> >
> > C:\family\ruby\win-eventlog>dtail.rb
> > thread/tail-ing Security on host1
> > thread/tail-ing Security on host2
> > thread/tail-ing Security on host3
> > thread/tail-ing Security on host4
> > thread/tail-ing Security on host5
> > thread/tail-ing Security on host6
> >
c:/ruby/lib/ruby/gems/1.8/gems/windows-pr-0.5.1-mswin32/lib/windows/error.rb:295:
[BUG] Segmentation fault
> > ruby 1.8.4 (2005-12-24) [i386-mswin32]
> > C:\family\ruby\win-eventlog>
> >
> > my code looks like,
> >
> > #---
> >    threads = []
> >    while x = DATA.gets do
> >       eventlog,host = x.split
> >       printf "thread/tail-ing %s on %s\n",eventlog,host
> >       threads << Thread.new(eventlog,host) do |log,host|
> >             tail_log log,host
> >          end
> >       #tail_log  eventlog, host
> >    end
> >    threads.each {|t| t.join}
> > #---
> >
> > is tail thread-safe or do i need to run it separately for each host
for the mean time?
>
> Wow, I never imagined folks running a series of eventlogs in different
> threads.
>
> Anyone have any ideas on this?
>
> Dan
>
I guess the code needs something like this for thread-safe:

   require ''thread''
   semaphore = Mutex.new

   semaphore.synchronize {
       get_last_error
    }


Regards,

Park Heesob