Date: Wed, 7 Feb 2007 22:36:41 +0100 From: "Pietro Cerutti" <pietro.cerutti@gmail.com> To: "youshi10@u.washington.edu" <youshi10@u.washington.edu> Cc: freebsd-hackers@freebsd.org Subject: Re: Trying to join an already exited pthread Message-ID: <e572718c0702071336o332337d7ue4cdc76bfabb4a1d@mail.gmail.com> In-Reply-To: <Pine.LNX.4.43.0702071314560.22034@hymn08.u.washington.edu> References: <Pine.LNX.4.43.0702071314560.22034@hymn08.u.washington.edu>
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On 2/7/07, youshi10@u.washington.edu <youshi10@u.washington.edu> wrote:
> Just wondering:
>
> If I was to try and join a pthread that already exited, would there be an error message output and/or errno set to an error value, or would a system hang?
man pthread_join(3):
ERRORS
The pthread_join() function will fail if:
[EINVAL] The implementation has detected that the value speci-
fied by thread does not refer to a joinable thread.
A pthread that already exited is considered non-joinable
> It this variable on Unix OSes?
The pthread_join() function conforms to ISO/IEC 9945-1:1996
(``POSIX.1'').
> -Garrett
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Pietro Cerutti
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