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From: David Xu <davidxu@FreeBSD.org>
Date: Mon, 4 Dec 2006 14:15:12 +0000 (UTC)
To: src-committers@FreeBSD.org, cvs-src@FreeBSD.org, cvs-all@FreeBSD.org
X-FreeBSD-CVS-Branch: HEAD
Cc: 
Subject: cvs commit: src/sys/sys proc.h umtx.h src/sys/kern kern_thr.c
 kern_umtx.c
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davidxu     2006-12-04 14:15:12 UTC

  FreeBSD src repository

  Modified files:
    sys/sys              proc.h umtx.h 
    sys/kern             kern_thr.c kern_umtx.c 
  Log:
  if a thread blocked on userland condition variable is
  pthread_cancel()ed, it is expected that the thread will not
  consume a pthread_cond_signal(), therefor, we use thr_wake()
  to mark a flag, the flag tells a thread calling do_cv_wait()
  in umtx code to not block on a condition variable.
  Thread library is expected that once a thread detected itself
  is in pthread_cond_wait, it will call the thr_wake() for itself
  in its SIGCANCEL handler.
  
  Revision  Changes    Path
  1.57      +11 -0     src/sys/kern/kern_thr.c
  1.56      +10 -5     src/sys/kern/kern_umtx.c
  1.465     +1 -0      src/sys/sys/proc.h
  1.27      +3 -0      src/sys/sys/umtx.h