1 /* pthread_mutex_timedlock. Hurd version.
2 Copyright (C) 2016-2022 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 "pt-mutex.h"
24 #include <hurdlock.h>
25
26 int
__pthread_mutex_clocklock(pthread_mutex_t * mtxp,clockid_t clockid,const struct timespec * tsp)27 __pthread_mutex_clocklock (pthread_mutex_t *mtxp,
28 clockid_t clockid,
29 const struct timespec *tsp)
30 {
31 struct __pthread *self;
32 int ret, flags = mtxp->__flags & GSYNC_SHARED;
33
34 switch (MTX_TYPE (mtxp))
35 {
36 case PT_MTX_NORMAL:
37 ret = lll_abstimed_lock (mtxp->__lock, tsp, flags, clockid);
38 break;
39
40 case PT_MTX_RECURSIVE:
41 self = _pthread_self ();
42 if (mtx_owned_p (mtxp, self, flags))
43 {
44 if (__glibc_unlikely (mtxp->__cnt + 1 == 0))
45 return EAGAIN;
46
47 ++mtxp->__cnt;
48 ret = 0;
49 }
50 else if ((ret = lll_abstimed_lock (mtxp->__lock, tsp, flags, clockid)) == 0)
51 {
52 mtx_set_owner (mtxp, self, flags);
53 mtxp->__cnt = 1;
54 }
55
56 break;
57
58 case PT_MTX_ERRORCHECK:
59 self = _pthread_self ();
60 if (mtx_owned_p (mtxp, self, flags))
61 ret = EDEADLK;
62 else if ((ret = lll_abstimed_lock (mtxp->__lock, tsp, flags, clockid)) == 0)
63 mtx_set_owner (mtxp, self, flags);
64
65 break;
66
67 case PT_MTX_NORMAL | PTHREAD_MUTEX_ROBUST:
68 case PT_MTX_RECURSIVE | PTHREAD_MUTEX_ROBUST:
69 case PT_MTX_ERRORCHECK | PTHREAD_MUTEX_ROBUST:
70 self = _pthread_self ();
71 ROBUST_LOCK (self, mtxp, lll_robust_abstimed_lock, tsp, flags, clockid);
72 break;
73
74 default:
75 ret = EINVAL;
76 break;
77 }
78
79 return ret;
80 }
weak_alias(__pthread_mutex_clocklock,pthread_mutex_clocklock)81 weak_alias (__pthread_mutex_clocklock, pthread_mutex_clocklock)
82
83 int
84 __pthread_mutex_timedlock (pthread_mutex_t *mutex,
85 const struct timespec *tsp)
86 {
87 return __pthread_mutex_clocklock (mutex, CLOCK_REALTIME, tsp);
88 }
89 weak_alias (__pthread_mutex_timedlock, pthread_mutex_timedlock)
90 hidden_def (__pthread_mutex_timedlock)
91