From 0b3366f6a93ac0f7e2028745ea557c0acd8722c6 Mon Sep 17 00:00:00 2001 From: "\"Steven J. Hill\"" Date: Sat, 7 May 2005 02:04:55 +0000 Subject: Import in NPTL code from glibc. For further information please consult the 'README.NPTL' file. --- libpthread/nptl/pthread_key_create.c | 63 ++++++++++++++++++++++++++++++++++++ 1 file changed, 63 insertions(+) create mode 100644 libpthread/nptl/pthread_key_create.c (limited to 'libpthread/nptl/pthread_key_create.c') diff --git a/libpthread/nptl/pthread_key_create.c b/libpthread/nptl/pthread_key_create.c new file mode 100644 index 000000000..cf35bc877 --- /dev/null +++ b/libpthread/nptl/pthread_key_create.c @@ -0,0 +1,63 @@ +/* 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" + + +/* Internal mutex for __pthread_keys table handling. */ +lll_lock_t __pthread_keys_lock = LLL_LOCK_INITIALIZER; + +int +__pthread_key_create (key, destr) + pthread_key_t *key; + void (*destr) (void *); +{ + int result = EAGAIN; + size_t cnt; + + lll_lock (__pthread_keys_lock); + + /* Find a slot in __pthread_kyes which is unused. */ + for (cnt = 0; cnt < PTHREAD_KEYS_MAX; ++cnt) + if (KEY_UNUSED (__pthread_keys[cnt].seq) + && KEY_USABLE (__pthread_keys[cnt].seq)) + { + /* We found an unused slot. */ + ++__pthread_keys[cnt].seq; + + /* Remember the destructor. */ + __pthread_keys[cnt].destr = destr; + + /* Return the key to the caller. */ + *key = cnt; + + /* The call succeeded. */ + result = 0; + + /* We found a key and can stop now. */ + break; + } + + lll_unlock (__pthread_keys_lock); + + return result; +} +strong_alias (__pthread_key_create, pthread_key_create) +strong_alias (__pthread_key_create, __pthread_key_create_internal) -- cgit v1.2.3