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1 /*
2  *
3  *  Copyright (C) 2021 NXP
4  *
5  *  Licensed under the Apache License, Version 2.0 (the "License");
6  *  you may not use this file except in compliance with the License.
7  *  You may obtain a copy of the License at
8  *
9  *  http://www.apache.org/licenses/LICENSE-2.0
10  *
11  *  Unless required by applicable law or agreed to in writing, software
12  *  distributed under the License is distributed on an "AS IS" BASIS,
13  *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14  *  See the License for the specific language governing permissions and
15  *  limitations under the License.
16  *
17  ******************************************************************************/
18 #include "NxpNfcThreadMutex.h"
19 
20 /*******************************************************************************
21 **
22 ** Function:    NfcHalThreadMutex::NfcHalThreadMutex()
23 **
24 ** Description: class constructor
25 **
26 ** Returns:     none
27 **
28 *******************************************************************************/
NfcHalThreadMutex()29 NfcHalThreadMutex::NfcHalThreadMutex() {
30   pthread_mutexattr_t mutexAttr;
31 
32   pthread_mutexattr_init(&mutexAttr);
33   pthread_mutex_init(&mMutex, &mutexAttr);
34   pthread_mutexattr_destroy(&mutexAttr);
35 }
36 
37 /*******************************************************************************
38 **
39 ** Function:    NfcHalThreadMutex::~NfcHalThreadMutex()
40 **
41 ** Description: class destructor
42 **
43 ** Returns:     none
44 **
45 *******************************************************************************/
~NfcHalThreadMutex()46 NfcHalThreadMutex::~NfcHalThreadMutex() { pthread_mutex_destroy(&mMutex); }
47 
48 /*******************************************************************************
49 **
50 ** Function:    NfcHalThreadMutex::lock()
51 **
52 ** Description: lock kthe mutex
53 **
54 ** Returns:     none
55 **
56 *******************************************************************************/
lock()57 void NfcHalThreadMutex::lock() { pthread_mutex_lock(&mMutex); }
58 
59 /*******************************************************************************
60 **
61 ** Function:    NfcHalThreadMutex::unblock()
62 **
63 ** Description: unlock the mutex
64 **
65 ** Returns:     none
66 **
67 *******************************************************************************/
unlock()68 void NfcHalThreadMutex::unlock() { pthread_mutex_unlock(&mMutex); }
69 
70 /*******************************************************************************
71 **
72 ** Function:    NfcHalThreadCondVar::NfcHalThreadCondVar()
73 **
74 ** Description: class constructor
75 **
76 ** Returns:     none
77 **
78 *******************************************************************************/
NfcHalThreadCondVar()79 NfcHalThreadCondVar::NfcHalThreadCondVar() {
80   pthread_condattr_t CondAttr;
81 
82   pthread_condattr_init(&CondAttr);
83   pthread_cond_init(&mCondVar, &CondAttr);
84 
85   pthread_condattr_destroy(&CondAttr);
86 }
87 
88 /*******************************************************************************
89 **
90 ** Function:    NfcHalThreadCondVar::~NfcHalThreadCondVar()
91 **
92 ** Description: class destructor
93 **
94 ** Returns:     none
95 **
96 *******************************************************************************/
~NfcHalThreadCondVar()97 NfcHalThreadCondVar::~NfcHalThreadCondVar() { pthread_cond_destroy(&mCondVar); }
98 
99 /*******************************************************************************
100 **
101 ** Function:    NfcHalThreadCondVar::wait()
102 **
103 ** Description: wait on the mCondVar
104 **
105 ** Returns:     none
106 **
107 *******************************************************************************/
wait()108 void NfcHalThreadCondVar::wait() {
109   pthread_cond_wait(&mCondVar, *this);
110   pthread_mutex_unlock(*this);
111 }
112 
113 /*******************************************************************************
114 **
115 ** Function:    NfcHalThreadCondVar::signal()
116 **
117 ** Description: signal the mCondVar
118 **
119 ** Returns:     none
120 **
121 *******************************************************************************/
signal()122 void NfcHalThreadCondVar::signal() {
123   NfcHalAutoThreadMutex a(*this);
124   pthread_cond_signal(&mCondVar);
125 }
126 
127 /*******************************************************************************
128 **
129 ** Function:    NfcHalAutoThreadMutex::NfcHalAutoThreadMutex()
130 **
131 ** Description: class constructor, automatically lock the mutex
132 **
133 ** Returns:     none
134 **
135 *******************************************************************************/
NfcHalAutoThreadMutex(NfcHalThreadMutex & m)136 NfcHalAutoThreadMutex::NfcHalAutoThreadMutex(NfcHalThreadMutex& m) : mm(m) {
137   mm.lock();
138 }
139 
140 /*******************************************************************************
141 **
142 ** Function:    NfcHalAutoThreadMutex::~NfcHalAutoThreadMutex()
143 **
144 ** Description: class destructor, automatically unlock the mutex
145 **
146 ** Returns:     none
147 **
148 *******************************************************************************/
~NfcHalAutoThreadMutex()149 NfcHalAutoThreadMutex::~NfcHalAutoThreadMutex() { mm.unlock(); }
150