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author | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2018-04-02 01:43:22 +0200 |
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committer | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2018-04-02 01:44:14 +0200 |
commit | 33574c17eefcf326c1cd30eb9f915ad26d3d9ef2 (patch) | |
tree | 2c1b143f2b7a0ceba9fba000b70dd2889d56e60f /sysdeps/mach/hurd/htl/pt-mutex-consistent.c | |
parent | 03e2aa50fd512449025bba8c244d16338d8526a4 (diff) | |
download | glibc-33574c17eefcf326c1cd30eb9f915ad26d3d9ef2.tar.gz glibc-33574c17eefcf326c1cd30eb9f915ad26d3d9ef2.tar.xz glibc-33574c17eefcf326c1cd30eb9f915ad26d3d9ef2.zip |
hurd: Add hurd thread library
Contributed by Agustina Arzille <avarzille@riseup.net> Amos Jeffries <squid3@treenet.co.nz> David Michael <fedora.dm0@gmail.com> Marco Gerards <marco@gnu.org> Marcus Brinkmann <marcus@gnu.org> Neal H. Walfield <neal@gnu.org> Pino Toscano <toscano.pino@tiscali.it> Richard Braun <rbraun@sceen.net> Roland McGrath <roland@gnu.org> Samuel Thibault <samuel.thibault@ens-lyon.org> Thomas DiModica <ricinwich@yahoo.com> Thomas Schwinge <tschwinge@gnu.org> * htl: New directory. * sysdeps/htl: New directory. * sysdeps/hurd/htl: New directory. * sysdeps/i386/htl: New directory. * sysdeps/mach/htl: New directory. * sysdeps/mach/hurd/htl: New directory. * sysdeps/mach/hurd/i386/htl: New directory. * nscd/Depend, resolv/Depend, rt/Depend: Add htl dependency. * sysdeps/mach/hurd/i386/Implies: Add mach/hurd/i386/htl imply. * sysdeps/mach/hurd/i386/libpthread.abilist: New file.
Diffstat (limited to 'sysdeps/mach/hurd/htl/pt-mutex-consistent.c')
-rw-r--r-- | sysdeps/mach/hurd/htl/pt-mutex-consistent.c | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/sysdeps/mach/hurd/htl/pt-mutex-consistent.c b/sysdeps/mach/hurd/htl/pt-mutex-consistent.c new file mode 100644 index 0000000000..9fd6342be4 --- /dev/null +++ b/sysdeps/mach/hurd/htl/pt-mutex-consistent.c @@ -0,0 +1,48 @@ +/* pthread_mutex_consistent. Hurd version. + Copyright (C) 2016-2018 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + This program is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public License + as published by the Free Software Foundation; either + version 2 of the license, or (at your option) any later version. + + This program 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 Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with this program; if not, see + <http://www.gnu.org/licenses/>. +*/ + +#include <pthread.h> +#include <stdlib.h> +#include <assert.h> +#include <pt-internal.h> +#include "pt-mutex.h" +#include <hurdlock.h> + +int +pthread_mutex_consistent (pthread_mutex_t *mtxp) +{ + int ret = EINVAL; + unsigned int val = mtxp->__lock; + + if ((mtxp->__flags & PTHREAD_MUTEX_ROBUST) != 0 && + (val & LLL_DEAD_OWNER) != 0 && + atomic_compare_and_exchange_bool_acq (&mtxp->__lock, + __getpid () | LLL_WAITERS, + val) == 0) + { + /* The mutex is now ours, and it's consistent. */ + mtxp->__owner_id = _pthread_self ()->thread; + mtxp->__cnt = 1; + ret = 0; + } + + return ret; +} + +weak_alias (pthread_mutex_consistent, pthread_mutex_consistent_np) |