[Boost-users] Re: Re: Thread creation state

From: Michael Glassford (glassfordm_at_[hidden])
Date: 2004-02-11 10:39:30

What I meant was, can you post a complete sample that you have actually
compiled and run and that has actually demonstrated the problem? That
obviously isn't the case with the code you posted because it contains syntax
errors and the main() function in your second post doesn't match the
definition of the testCommand class in your first post.

Having said that, I fixed the errors the best I could and don't see the
problem. It would help if you could:

1) Tell me what compiler and compiler version you're using.
2) Tell me what Boost version you're using.
3) Post a complete code sample that demonstrates the problem.
4) Specify what compile and link options you're using (perhaps you could
attach a make file or project file?)

Sorry; I'm trying to help, but if you want me to be able to figure out the
problem you'll have to help me out.

Mike

----- Original Message ----- 
From: <janardhan.guptha_at_[hidden]>
Newsgroups: gmane.comp.lib.boost.user
Sent: Tuesday, February 10, 2004 11:32 PM
Subject: RE: Re: Thread creation state

>
> The rest of the applicatin is just creating the object and preparing it
> for execution. I am using Win32 version of boost.Thread implementation.
>
> The creation code snipet is
>
> void main() {
> testCommand *tObj = new testCommand(11);
> tObj->createthread();
> tObj->runthread();
> }
>
>
> -----Original Message-----
> From: boost-users-bounces_at_[hidden]
> [mailto:boost-users-bounces_at_[hidden]]On Behalf Of Michael
> Glassford
> Sent: Wednesday, February 11, 2004 12:17 AM
> To: boost-users_at_[hidden]
> Subject: [Boost-users] Re: Thread creation state
>
>
> It would be a lot easier to help if you could post a complete,
> compilable example that demonstrates the problem. Also, it would be
> useful to know whether you are using the Win32, pthread, or Mac
> implementation of Boost.Thread.
>
> Thanks,
>
> Mike
>
>
> <janardhan.guptha_at_[hidden]> wrote in message
> news:433CFA26BCA852438922F929E3D07955AE53A7_at_blraddc02.efi.internal...
> > I am creating a boost thread, how to know in which state it is
> created.
> > I have a code snippet that is waiting always in the  thread creatin
> functon
> > istelf. Where as i tried with some boost samples, they are working
> amazingly
> > perfect. This is how my code snippet looks like
> >
> > typedef boost::mutex::scoped_lock lock;
> > class testCommand {
> > static void threadfunc() {
> > testCommand *testObj = mMapCommand[mObjID];
> > testObj->processthread();
> > };
> >
> > static map< int mObjID, testCommand*> mMapCommand;
> > private:
> > void createthread() {
> > mThread = new boost::thread(&testCommand::threadfunc);
> > }
> > void processthread() {
> > lock lk(mMutex);
> > mCondition.wait(lk);
> > //// Some Action
> > };
> >
> > void runthread() {
> > lock lk(mMutex);
> > mCondition.notify_one();
> > };
> >
> > public:
> > static int mObjID;
> > boost::thread *mThread;
> > boost::condition mCondition;
> > boost::mutex mMutex;
> > };
> >
> >
> > The newly created thread is waiting at the following location
> forever, by
> > the time
> > i get a chance to execute the new thread is greatly delayed.
> >
> > NTDLL! 77f8856e()
> > boost::detail::thread::lock_ops<boost::mutex>::unlock(boost::mutex &
> {...})
> > line 49
> > boost::detail::thread::scoped_lock<boost::mutex>::unlock() line 85 +
> 11
> > bytes
> >
> boost::detail::thread::scoped_lock<boost::mutex>::~scoped_lock<boost::
> mutex>
> > () line 74
> > `anonymous namespace'::thread_param::started() line 47 + 15 bytes
> > thread_proxy(void * 0x0012fd74) line 71
> > _threadstartex(void * 0x00961040) line 212 + 13 bytes
> > KERNEL32! 7c57b382()
> >
> > It sounds like i am missing something here. The queries here are
> > 1. why it is waiting at the above specified line forever ?
> > 2. Where can i get few worth thread samples done using boost::thread
> >
> > Regards
> > Janardhan
>
>
>
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