1/* pthread_mutex_init. Hurd version.
2 Copyright (C) 2016-2024 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
9
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
14
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <https://www.gnu.org/licenses/>. */
18
19#include <pthread.h>
20#include <stdlib.h>
21#include <assert.h>
22#include <pt-internal.h>
23#include <pthreadP.h>
24#include "pt-mutex.h"
25#include <hurdlock.h>
26
27static const pthread_mutexattr_t dfl_attr = {
28 .__prioceiling = 0,
29 .__protocol = PTHREAD_PRIO_NONE,
30 .__pshared = PTHREAD_PROCESS_PRIVATE,
31 .__mutex_type = __PTHREAD_MUTEX_TIMED
32};
33
34int
35__pthread_mutex_init (pthread_mutex_t *mtxp, const pthread_mutexattr_t *attrp)
36{
37 ASSERT_TYPE_SIZE (pthread_mutex_t, __SIZEOF_PTHREAD_MUTEX_T);
38
39 if (attrp == NULL)
40 attrp = &dfl_attr;
41
42 mtxp->__flags = (attrp->__pshared == PTHREAD_PROCESS_SHARED
43 ? GSYNC_SHARED : 0) | ((attrp->__prioceiling
44 & PTHREAD_MUTEX_ROBUST)
45 ? PTHREAD_MUTEX_ROBUST : 0);
46
47 mtxp->__type = (attrp->__mutex_type
48 + (attrp->__mutex_type != __PTHREAD_MUTEX_TIMED));
49
50 mtxp->__owner_id = 0;
51 mtxp->__shpid = 0;
52 mtxp->__cnt = 0;
53 mtxp->__lock = 0;
54
55 return 0;
56}
57
58weak_alias (__pthread_mutex_init, pthread_mutex_init)
59hidden_def (__pthread_mutex_init)
60

source code of glibc/sysdeps/mach/hurd/htl/pt-mutex-init.c