Laurent Sansonetti
lsans****@apple*****
Sat Jul 21 20:32:19 JST 2007
Cool, this explains why the problem didn't occur on my other box, which runs 1.8.6. Thanks a lot for the detective work! Laurent On Jul 21, 2007, at 3:59 AM, Satoshi Nakagawa wrote: > Hi. > > The problem seems a bug of ruby 1.8.2. > I'm sorry for my insufficient testing. > > I cut the reproduce code into pure Ruby not using RubyCocoa: > > http://limechat.net/rubycocoa/threaded_socket_test.rb > > Then I tested it on ruby 1.8.2 and ruby 1.8.6: > > $ /usr/bin/ruby -v threaded_socket_test.rb > ruby 1.8.2 (2004-12-25) [universal-darwin8.0] > +++ start writing > (stalls) > > $ ruby -v threaded_socket_test.rb > ruby 1.8.6 (2007-03-13 patchlevel 0) [i686-darwin8.9.1] > +++ start writing > *** received > (snip) > *** received > --- end writing > *** received > (continues normally) > > So I concluded it is a bug of ruby 1.8.2, not of RubyCocoa. > > Let's release 0.12.0. > > -- > Satoshi Nakagawa > > > On 2007/07/21, at 9:08, Satoshi Nakagawa wrote: > >> Hi. >> >> I found a problem, application stalls on thread context switches of >> Ruby. >> It is reproducible on 0.11.1 and trunk. >> >> How to reproduce the problem: >> >> 1. Start a socket server. >> 2. Connect to the server using Ruby's TCPSocket. >> 3. The server accepts the request. >> 4. Start a thread on the server, sending 256KB per 5 seconds to >> the client. >> 5. The application stalls. (Rolling rainbow colored cursor forever) >> >> Reproduce code in Xcode project: >> >> http://limechat.net/rubycocoa/ThreadedSocketTest.zip >> >> In #4, if it sends 64KB per 5 seconds, there are no problem. >> >> This is the code around threaded writing from server to client. >> >> def write_loop >> loop do >> puts '+++ start writing' >> @sc.write('a' * (1024 * 256)) >> puts '--- end writing' >> sleep 5 >> end >> end >> >> The log when it sends 256KB: >> >> +++ start writing >> (stalls) >> >> The log when it sends 64KB: >> >> +++ start writing >> --- end writing >> *** received >> *** received >> (continues forever) >> >> So I noticed the application stops at: >> >> @sc.write('a' * (1024 * 256)) >> >> It seems to occur on thread context switches of Ruby. >> Then, I added a logging code to RubyCocoa: >> >> Index: framework/src/objc/RBThreadSwitcher.m >> =================================================================== >> --- framework/src/objc/RBThreadSwitcher.m (revision 1928) >> +++ framework/src/objc/RBThreadSwitcher.m (working copy) >> @@ -44,6 +44,7 @@ >> - (void) sched: (NSTimer*)a_timer >> { >> + NSLog(@"@@@ timer"); >> CHECK_INTS; >> if (!rb_thread_critical) rb_thread_schedule(); >> } >> >> Then the log is (sends 256KB): >> >> +++ start writing >> 2007-07-21 08:38:34.247 BridgeTest2[2990] @@@ timer >> (stalls) >> >> It shows the application stalls after a thread context switch of >> Ruby. >> >> -- >> Satoshi Nakagawa > > _______________________________________________ > Rubycocoa-devel mailing list > Rubyc****@lists***** > http://lists.sourceforge.jp/mailman/listinfo/rubycocoa-devel
