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OperationListBase.h
1 /*
2  * Copyright (c) 2018-2019, Arm Limited and affiliates.
3  * SPDX-License-Identifier: Apache-2.0
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 #ifndef MBED_OPERATION_LIST_BASE_H
19 #define MBED_OPERATION_LIST_BASE_H
20 
21 #include "LinkedListBase.h"
22 #include "Mutex.h"
23 
24 class AsyncOp;
25 
26 class OperationListBase {
27 public:
28 
29  /**
30  * Create a new empty operation list
31  */
32  OperationListBase();
33 
34  /**
35  * Destroy this object and abort all operations
36  */
37  ~OperationListBase();
38 
39  /**
40  * Check if the list is empty
41  *
42  * @return true if the list is empty false otherwise
43  */
44  bool empty();
45 
46  /**
47  * Add an operation to the list
48  *
49  * If the list was empty then call process on this
50  * operation
51  *
52  * @param op Operation to add
53  */
54  void add(AsyncOp *op);
55 
56  /**
57  * Remove an operation from the list
58  *
59  * If this was the head of the list then process the
60  * next element in the list.
61  *
62  * @param op Operation to remove
63  */
64  void remove(AsyncOp *op);
65 
66  /**
67  * Dequeue the head of the list
68  *
69  * Remove the head of the operation list without completing it
70  * or processing the next element. The caller must call the
71  * AsnycOp::complete() function of the returned object.
72  * Additionally process() must be called on this object
73  * if there are still elements in the list.
74  *
75  * @return The async op at the head of the list
76  */
77  AsyncOp *dequeue_raw();
78 
79  /**
80  * Abort all operations
81  */
82  void remove_all();
83 
84  /**
85  * Process the operation list
86  *
87  * This allow the operation at the head of the list to perform processing
88  */
89  void process();
90 
91 private:
92  friend class AsyncOp;
93 
94  LinkedListBase _list;
95 };
96 
97 #endif
OperationListBase::~OperationListBase
~OperationListBase()
Destroy this object and abort all operations.
OperationListBase::process
void process()
Process the operation list.
OperationListBase::remove_all
void remove_all()
Abort all operations.
OperationListBase::empty
bool empty()
Check if the list is empty.
OperationListBase::add
void add(AsyncOp *op)
Add an operation to the list.
OperationListBase::dequeue_raw
AsyncOp * dequeue_raw()
Dequeue the head of the list.
OperationListBase::OperationListBase
OperationListBase()
Create a new empty operation list.
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