Hi, In boost::thread, when a thread is created, it starts execution at that instance itself. Instead of this, is it possible to postpone the execution? Thanks, Lloyd ______________________________________ Scanned and protected by Email scanner
"Lloyd" <lloyd@cdactvm.in> writes:
In boost::thread, when a thread is created, it starts execution at that instance itself. Instead of this, is it possible to postpone the execution?
No. You can have the thread function block on a condition variable or something straight away though. That way you can control when it resumes by setting the flag and notifying the condition variable. Anthony -- Author of C++ Concurrency in Action http://www.stdthread.co.uk/book/ just::thread C++0x thread library http://www.stdthread.co.uk Just Software Solutions Ltd http://www.justsoftwaresolutions.co.uk 15 Carrallack Mews, St Just, Cornwall, TR19 7UL, UK. Company No. 5478976
In boost::thread, when a thread is created, it starts execution at that instance itself. Instead of this, is it possible to postpone the execution?
No. You can have the thread function block on a condition variable or something straight away though. That way you can control when it resumes by setting the flag and notifying the condition variable.
I know that this can be easily done in Windows with the CREATE_SUSPENDED flag. Can this be done in boost::thread? If not, I would consider this a big limitation. Do other operating systems support this? Surely, Windows isn't the only one. On that note does boost::thread support suspending and resuming thread execution? I haven't used boost::thread (only native Windows calls), so I don't know. -- Bill --
On Thursday, July 15, 2010 2:53 PM Bill Buklis wrote:
In boost::thread, when a thread is created, it starts execution at that instance itself. Instead of this, is it possible to postpone the execution?
No. You can have the thread function block on a condition variable or something straight away though. That way you can control when it resumes by setting the flag and notifying the condition variable.
I know that this can be easily done in Windows with the CREATE_SUSPENDED flag. Can this be done in boost::thread? If not, I would consider this a big limitation. Do other operating systems support this? Surely, Windows isn't the only one. On that note does boost::thread support suspending and resuming thread execution? I haven't used boost::thread (only native Windows calls), so I don't know.
An examination of https://computing.llnl.gov/tutorials/pthreads indicates that Posix threads (used by the UNIX family of operating systems, including Linux and MacOS-X) does not support suspending threads either at creation or later. Also, Microsoft has found that the SuspendThread function is dangerous (see http://msdn.microsoft.com/en-us/library/ms686345%28VS.85%29.aspx). If you desire the ability to suspend a thread, it is best to have it wait on something.
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Anthony Williams -
Bill Buklis -
Lloyd