From c68d0fa2d88fc2134a38d99e7e944828384a7671 Mon Sep 17 00:00:00 2001 From: Austin Foxley Date: Sat, 17 Oct 2009 12:26:24 -0700 Subject: libpthread/nptl: core of the "Native Posix Threading Library" for uClibc targetting arm,sh,i386,mips,sparc for now Signed-off-by: Austin Foxley --- libpthread/nptl/pthread_detach.c | 57 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 57 insertions(+) create mode 100644 libpthread/nptl/pthread_detach.c (limited to 'libpthread/nptl/pthread_detach.c') diff --git a/libpthread/nptl/pthread_detach.c b/libpthread/nptl/pthread_detach.c new file mode 100644 index 000000000..1f0c2fe7c --- /dev/null +++ b/libpthread/nptl/pthread_detach.c @@ -0,0 +1,57 @@ +/* Copyright (C) 2002, 2003 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Ulrich Drepper , 2002. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#include +#include "pthreadP.h" +#include + + +int +pthread_detach (th) + pthread_t th; +{ + struct pthread *pd = (struct pthread *) th; + + /* Make sure the descriptor is valid. */ + if (INVALID_NOT_TERMINATED_TD_P (pd)) + /* Not a valid thread handle. */ + return ESRCH; + + int result = 0; + + /* Mark the thread as detached. */ + if (atomic_compare_and_exchange_bool_acq (&pd->joinid, pd, NULL)) + { + /* There are two possibilities here. First, the thread might + already be detached. In this case we return EINVAL. + Otherwise there might already be a waiter. The standard does + not mention what happens in this case. */ + if (IS_DETACHED (pd)) + result = EINVAL; + } + else + /* Check whether the thread terminated meanwhile. In this case we + will just free the TCB. */ + if ((pd->cancelhandling & EXITING_BITMASK) != 0) + /* Note that the code in __free_tcb makes sure each thread + control block is freed only once. */ + __free_tcb (pd); + + return result; +} -- cgit v1.2.3