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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-lock.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-lock.c')
-rw-r--r-- | sysdeps/mach/hurd/htl/pt-mutex-lock.c | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/sysdeps/mach/hurd/htl/pt-mutex-lock.c b/sysdeps/mach/hurd/htl/pt-mutex-lock.c new file mode 100644 index 0000000000..e4a86f0e49 --- /dev/null +++ b/sysdeps/mach/hurd/htl/pt-mutex-lock.c @@ -0,0 +1,81 @@ +/* pthread_mutex_lock. 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_lock (pthread_mutex_t *mtxp) +{ + struct __pthread *self; + int flags = mtxp->__flags & GSYNC_SHARED; + int ret = 0; + + switch (MTX_TYPE (mtxp)) + { + case PT_MTX_NORMAL: + lll_lock (&mtxp->__lock, flags); + break; + + case PT_MTX_RECURSIVE: + self = _pthread_self (); + if (mtx_owned_p (mtxp, self, flags)) + { + if (__glibc_unlikely (mtxp->__cnt + 1 == 0)) + return EAGAIN; + + ++mtxp->__cnt; + return ret; + } + + lll_lock (&mtxp->__lock, flags); + mtx_set_owner (mtxp, self, flags); + mtxp->__cnt = 1; + break; + + case PT_MTX_ERRORCHECK: + self = _pthread_self (); + if (mtx_owned_p (mtxp, self, flags)) + return EDEADLK; + + lll_lock (&mtxp->__lock, flags); + mtx_set_owner (mtxp, self, flags); + break; + + case PT_MTX_NORMAL | PTHREAD_MUTEX_ROBUST: + case PT_MTX_RECURSIVE | PTHREAD_MUTEX_ROBUST: + case PT_MTX_ERRORCHECK | PTHREAD_MUTEX_ROBUST: + self = _pthread_self (); + ROBUST_LOCK (self, mtxp, __lll_robust_lock, flags); + break; + + default: + ret = EINVAL; + break; + } + + return ret; +} + +strong_alias (__pthread_mutex_lock, _pthread_mutex_lock) +strong_alias (__pthread_mutex_lock, pthread_mutex_lock) |