1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
|
/* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil -*- */
/*
* Copyright (c) 2004-2005 The Trustees of Indiana University and Indiana
* University Research and Technology
* Corporation. All rights reserved.
* Copyright (c) 2004-2005 The University of Tennessee and The University
* of Tennessee Research Foundation. All rights
* reserved.
* Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
* University of Stuttgart. All rights reserved.
* Copyright (c) 2004-2005 The Regents of the University of California.
* All rights reserved.
* Copyright (c) 2007-2016 Los Alamos National Security, LLC. All rights
* reserved.
* Copyright (c) 2015 Research Organization for Information Science
* and Technology (RIST). All rights reserved.
* $COPYRIGHT$
*
* Additional copyrights may follow
*
* $HEADER$
*/
#include "opal_config.h"
#include "opal/threads/mutex.h"
/*
* Wait and see if some upper layer wants to use threads, if support
* exists.
*/
bool opal_uses_threads = false;
static void opal_mutex_construct(opal_mutex_t *m)
{
#if OPAL_ENABLE_DEBUG
pthread_mutexattr_t attr;
pthread_mutexattr_init(&attr);
/* set type to ERRORCHECK so that we catch recursive locks */
#if OPAL_HAVE_PTHREAD_MUTEX_ERRORCHECK_NP
pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_ERRORCHECK_NP);
#elif OPAL_HAVE_PTHREAD_MUTEX_ERRORCHECK
pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_ERRORCHECK);
#endif /* OPAL_HAVE_PTHREAD_MUTEX_ERRORCHECK_NP */
pthread_mutex_init(&m->m_lock_pthread, &attr);
pthread_mutexattr_destroy(&attr);
m->m_lock_debug = 0;
m->m_lock_file = NULL;
m->m_lock_line = 0;
#else
/* Without debugging, choose the fastest available mutexes */
pthread_mutex_init(&m->m_lock_pthread, NULL);
#endif /* OPAL_ENABLE_DEBUG */
#if OPAL_HAVE_ATOMIC_SPINLOCKS
opal_atomic_lock_init( &m->m_lock_atomic, OPAL_ATOMIC_LOCK_UNLOCKED );
#endif
}
static void opal_mutex_destruct(opal_mutex_t *m)
{
pthread_mutex_destroy(&m->m_lock_pthread);
}
OBJ_CLASS_INSTANCE(opal_mutex_t,
opal_object_t,
opal_mutex_construct,
opal_mutex_destruct);
static void opal_recursive_mutex_construct(opal_recursive_mutex_t *m)
{
pthread_mutexattr_t attr;
pthread_mutexattr_init(&attr);
#if OPAL_ENABLE_DEBUG
m->m_lock_debug = 0;
m->m_lock_file = NULL;
m->m_lock_line = 0;
#endif
pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_RECURSIVE);
pthread_mutex_init(&m->m_lock_pthread, &attr);
pthread_mutexattr_destroy(&attr);
#if OPAL_HAVE_ATOMIC_SPINLOCKS
opal_atomic_lock_init( &m->m_lock_atomic, OPAL_ATOMIC_LOCK_UNLOCKED );
#endif
}
OBJ_CLASS_INSTANCE(opal_recursive_mutex_t,
opal_object_t,
opal_recursive_mutex_construct,
opal_mutex_destruct);
|
