Intel(R) Threading Building Blocks Doxygen Documentation version 4.2.3
Loading...
Searching...
No Matches
queuing_mutex.h
Go to the documentation of this file.
1/*
2 Copyright (c) 2005-2020 Intel Corporation
3
4 Licensed under the Apache License, Version 2.0 (the "License");
5 you may not use this file except in compliance with the License.
6 You may obtain a copy of the License at
7
8 http://www.apache.org/licenses/LICENSE-2.0
9
10 Unless required by applicable law or agreed to in writing, software
11 distributed under the License is distributed on an "AS IS" BASIS,
12 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 See the License for the specific language governing permissions and
14 limitations under the License.
15*/
16
17#ifndef __TBB_queuing_mutex_H
18#define __TBB_queuing_mutex_H
19
20#define __TBB_queuing_mutex_H_include_area
22
23#include <cstring>
24#include "atomic.h"
25#include "tbb_profiling.h"
26
27namespace tbb {
28
30
32public:
35 q_tail = NULL;
36#if TBB_USE_THREADING_TOOLS
38#endif
39 }
40
42
46 void initialize() {
47 mutex = NULL;
48 going = 0;
49#if TBB_USE_ASSERT
51#endif /* TBB_USE_ASSERT */
52 }
53
54 public:
56
58
61 initialize();
62 acquire(m);
63 }
64
67 if( mutex ) release();
68 }
69
72
75
78
79 private:
82
85
87
90 uintptr_t going;
91 };
92
94
95 // Mutex traits
96 static const bool is_rw_mutex = false;
97 static const bool is_recursive_mutex = false;
98 static const bool is_fair_mutex = true;
99
100private:
102 atomic<scoped_lock*> q_tail;
103
104};
105
107
108} // namespace tbb
109
111#undef __TBB_queuing_mutex_H_include_area
112
113#endif /* __TBB_queuing_mutex_H */
#define __TBB_EXPORTED_METHOD
Definition tbb_stddef.h:98
#define __TBB_DEFINE_PROFILING_SET_NAME(sync_object_type)
The graph class.
@ acquire
Acquire.
Definition atomic.h:57
void poison_pointer(T *__TBB_atomic &)
Definition tbb_stddef.h:305
Queuing mutex with local-only spinning.
atomic< scoped_lock * > q_tail
The last competitor requesting the lock.
queuing_mutex()
Construct unacquired mutex.
static const bool is_recursive_mutex
static const bool is_rw_mutex
static const bool is_fair_mutex
void __TBB_EXPORTED_METHOD internal_construct()
The scoped locking pattern.
scoped_lock()
Construct lock that has not acquired a mutex.
~scoped_lock()
Release lock (if lock is held).
uintptr_t going
The local spin-wait variable.
void initialize()
Initialize fields to mean "no lock held".
void __TBB_EXPORTED_METHOD release()
Release lock.
queuing_mutex * mutex
The pointer to the mutex owned, or NULL if not holding a mutex.
bool __TBB_EXPORTED_METHOD try_acquire(queuing_mutex &m)
Acquire lock on given mutex if free (i.e. non-blocking)
scoped_lock(queuing_mutex &m)
Acquire lock on given mutex.
scoped_lock * next
The pointer to the next competitor for a mutex.
Base class for types that should not be copied or assigned.
Definition tbb_stddef.h:330

Copyright © 2005-2020 Intel Corporation. All Rights Reserved.

Intel, Pentium, Intel Xeon, Itanium, Intel XScale and VTune are registered trademarks or trademarks of Intel Corporation or its subsidiaries in the United States and other countries.

* Other names and brands may be claimed as the property of others.