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Dependencies:   F746_GUI SD_PlayerSkeleton F746_SAI_IO

mbed_src_STM32F7/api/CallChain.h@0:aa3fc5ad02f7, 2019-06-04 (annotated)

Committer:
phungductung
Date:
Tue Jun 04 09:08:29 2019 +0000
Revision:
0:aa3fc5ad02f7
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phungductung 0:aa3fc5ad02f7 1 /* mbed Microcontroller Library
phungductung 0:aa3fc5ad02f7 2 * Copyright (c) 2006-2013 ARM Limited
phungductung 0:aa3fc5ad02f7 3 *
phungductung 0:aa3fc5ad02f7 4 * Licensed under the Apache License, Version 2.0 (the "License");
phungductung 0:aa3fc5ad02f7 5 * you may not use this file except in compliance with the License.
phungductung 0:aa3fc5ad02f7 6 * You may obtain a copy of the License at
phungductung 0:aa3fc5ad02f7 7 *
phungductung 0:aa3fc5ad02f7 8 * http://www.apache.org/licenses/LICENSE-2.0
phungductung 0:aa3fc5ad02f7 9 *
phungductung 0:aa3fc5ad02f7 10 * Unless required by applicable law or agreed to in writing, software
phungductung 0:aa3fc5ad02f7 11 * distributed under the License is distributed on an "AS IS" BASIS,
phungductung 0:aa3fc5ad02f7 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
phungductung 0:aa3fc5ad02f7 13 * See the License for the specific language governing permissions and
phungductung 0:aa3fc5ad02f7 14 * limitations under the License.
phungductung 0:aa3fc5ad02f7 15 */
phungductung 0:aa3fc5ad02f7 16 #ifndef MBED_CALLCHAIN_H
phungductung 0:aa3fc5ad02f7 17 #define MBED_CALLCHAIN_H
phungductung 0:aa3fc5ad02f7 18
phungductung 0:aa3fc5ad02f7 19 #include "FunctionPointer.h"
phungductung 0:aa3fc5ad02f7 20 #include <string.h>
phungductung 0:aa3fc5ad02f7 21
phungductung 0:aa3fc5ad02f7 22 namespace mbed {
phungductung 0:aa3fc5ad02f7 23
phungductung 0:aa3fc5ad02f7 24 /** Group one or more functions in an instance of a CallChain, then call them in
phungductung 0:aa3fc5ad02f7 25 * sequence using CallChain::call(). Used mostly by the interrupt chaining code,
phungductung 0:aa3fc5ad02f7 26 * but can be used for other purposes.
phungductung 0:aa3fc5ad02f7 27 *
phungductung 0:aa3fc5ad02f7 28 * Example:
phungductung 0:aa3fc5ad02f7 29 * @code
phungductung 0:aa3fc5ad02f7 30 * #include "mbed.h"
phungductung 0:aa3fc5ad02f7 31 *
phungductung 0:aa3fc5ad02f7 32 * CallChain chain;
phungductung 0:aa3fc5ad02f7 33 *
phungductung 0:aa3fc5ad02f7 34 * void first(void) {
phungductung 0:aa3fc5ad02f7 35 * printf("'first' function.\n");
phungductung 0:aa3fc5ad02f7 36 * }
phungductung 0:aa3fc5ad02f7 37 *
phungductung 0:aa3fc5ad02f7 38 * void second(void) {
phungductung 0:aa3fc5ad02f7 39 * printf("'second' function.\n");
phungductung 0:aa3fc5ad02f7 40 * }
phungductung 0:aa3fc5ad02f7 41 *
phungductung 0:aa3fc5ad02f7 42 * class Test {
phungductung 0:aa3fc5ad02f7 43 * public:
phungductung 0:aa3fc5ad02f7 44 * void f(void) {
phungductung 0:aa3fc5ad02f7 45 * printf("A::f (class member).\n");
phungductung 0:aa3fc5ad02f7 46 * }
phungductung 0:aa3fc5ad02f7 47 * };
phungductung 0:aa3fc5ad02f7 48 *
phungductung 0:aa3fc5ad02f7 49 * int main() {
phungductung 0:aa3fc5ad02f7 50 * Test test;
phungductung 0:aa3fc5ad02f7 51 *
phungductung 0:aa3fc5ad02f7 52 * chain.add(second);
phungductung 0:aa3fc5ad02f7 53 * chain.add_front(first);
phungductung 0:aa3fc5ad02f7 54 * chain.add(&test, &Test::f);
phungductung 0:aa3fc5ad02f7 55 * chain.call();
phungductung 0:aa3fc5ad02f7 56 * }
phungductung 0:aa3fc5ad02f7 57 * @endcode
phungductung 0:aa3fc5ad02f7 58 */
phungductung 0:aa3fc5ad02f7 59
phungductung 0:aa3fc5ad02f7 60 typedef FunctionPointer* pFunctionPointer_t;
phungductung 0:aa3fc5ad02f7 61
phungductung 0:aa3fc5ad02f7 62 class CallChain {
phungductung 0:aa3fc5ad02f7 63 public:
phungductung 0:aa3fc5ad02f7 64 /** Create an empty chain
phungductung 0:aa3fc5ad02f7 65 *
phungductung 0:aa3fc5ad02f7 66 * @param size (optional) Initial size of the chain
phungductung 0:aa3fc5ad02f7 67 */
phungductung 0:aa3fc5ad02f7 68 CallChain(int size = 4);
phungductung 0:aa3fc5ad02f7 69 virtual ~CallChain();
phungductung 0:aa3fc5ad02f7 70
phungductung 0:aa3fc5ad02f7 71 /** Add a function at the end of the chain
phungductung 0:aa3fc5ad02f7 72 *
phungductung 0:aa3fc5ad02f7 73 * @param function A pointer to a void function
phungductung 0:aa3fc5ad02f7 74 *
phungductung 0:aa3fc5ad02f7 75 * @returns
phungductung 0:aa3fc5ad02f7 76 * The function object created for 'function'
phungductung 0:aa3fc5ad02f7 77 */
phungductung 0:aa3fc5ad02f7 78 pFunctionPointer_t add(void (*function)(void));
phungductung 0:aa3fc5ad02f7 79
phungductung 0:aa3fc5ad02f7 80 /** Add a function at the end of the chain
phungductung 0:aa3fc5ad02f7 81 *
phungductung 0:aa3fc5ad02f7 82 * @param tptr pointer to the object to call the member function on
phungductung 0:aa3fc5ad02f7 83 * @param mptr pointer to the member function to be called
phungductung 0:aa3fc5ad02f7 84 *
phungductung 0:aa3fc5ad02f7 85 * @returns
phungductung 0:aa3fc5ad02f7 86 * The function object created for 'tptr' and 'mptr'
phungductung 0:aa3fc5ad02f7 87 */
phungductung 0:aa3fc5ad02f7 88 template<typename T>
phungductung 0:aa3fc5ad02f7 89 pFunctionPointer_t add(T *tptr, void (T::*mptr)(void)) {
phungductung 0:aa3fc5ad02f7 90 return common_add(new FunctionPointer(tptr, mptr));
phungductung 0:aa3fc5ad02f7 91 }
phungductung 0:aa3fc5ad02f7 92
phungductung 0:aa3fc5ad02f7 93 /** Add a function at the beginning of the chain
phungductung 0:aa3fc5ad02f7 94 *
phungductung 0:aa3fc5ad02f7 95 * @param function A pointer to a void function
phungductung 0:aa3fc5ad02f7 96 *
phungductung 0:aa3fc5ad02f7 97 * @returns
phungductung 0:aa3fc5ad02f7 98 * The function object created for 'function'
phungductung 0:aa3fc5ad02f7 99 */
phungductung 0:aa3fc5ad02f7 100 pFunctionPointer_t add_front(void (*function)(void));
phungductung 0:aa3fc5ad02f7 101
phungductung 0:aa3fc5ad02f7 102 /** Add a function at the beginning of the chain
phungductung 0:aa3fc5ad02f7 103 *
phungductung 0:aa3fc5ad02f7 104 * @param tptr pointer to the object to call the member function on
phungductung 0:aa3fc5ad02f7 105 * @param mptr pointer to the member function to be called
phungductung 0:aa3fc5ad02f7 106 *
phungductung 0:aa3fc5ad02f7 107 * @returns
phungductung 0:aa3fc5ad02f7 108 * The function object created for 'tptr' and 'mptr'
phungductung 0:aa3fc5ad02f7 109 */
phungductung 0:aa3fc5ad02f7 110 template<typename T>
phungductung 0:aa3fc5ad02f7 111 pFunctionPointer_t add_front(T *tptr, void (T::*mptr)(void)) {
phungductung 0:aa3fc5ad02f7 112 return common_add_front(new FunctionPointer(tptr, mptr));
phungductung 0:aa3fc5ad02f7 113 }
phungductung 0:aa3fc5ad02f7 114
phungductung 0:aa3fc5ad02f7 115 /** Get the number of functions in the chain
phungductung 0:aa3fc5ad02f7 116 */
phungductung 0:aa3fc5ad02f7 117 int size() const;
phungductung 0:aa3fc5ad02f7 118
phungductung 0:aa3fc5ad02f7 119 /** Get a function object from the chain
phungductung 0:aa3fc5ad02f7 120 *
phungductung 0:aa3fc5ad02f7 121 * @param i function object index
phungductung 0:aa3fc5ad02f7 122 *
phungductung 0:aa3fc5ad02f7 123 * @returns
phungductung 0:aa3fc5ad02f7 124 * The function object at position 'i' in the chain
phungductung 0:aa3fc5ad02f7 125 */
phungductung 0:aa3fc5ad02f7 126 pFunctionPointer_t get(int i) const;
phungductung 0:aa3fc5ad02f7 127
phungductung 0:aa3fc5ad02f7 128 /** Look for a function object in the call chain
phungductung 0:aa3fc5ad02f7 129 *
phungductung 0:aa3fc5ad02f7 130 * @param f the function object to search
phungductung 0:aa3fc5ad02f7 131 *
phungductung 0:aa3fc5ad02f7 132 * @returns
phungductung 0:aa3fc5ad02f7 133 * The index of the function object if found, -1 otherwise.
phungductung 0:aa3fc5ad02f7 134 */
phungductung 0:aa3fc5ad02f7 135 int find(pFunctionPointer_t f) const;
phungductung 0:aa3fc5ad02f7 136
phungductung 0:aa3fc5ad02f7 137 /** Clear the call chain (remove all functions in the chain).
phungductung 0:aa3fc5ad02f7 138 */
phungductung 0:aa3fc5ad02f7 139 void clear();
phungductung 0:aa3fc5ad02f7 140
phungductung 0:aa3fc5ad02f7 141 /** Remove a function object from the chain
phungductung 0:aa3fc5ad02f7 142 *
phungductung 0:aa3fc5ad02f7 143 * @arg f the function object to remove
phungductung 0:aa3fc5ad02f7 144 *
phungductung 0:aa3fc5ad02f7 145 * @returns
phungductung 0:aa3fc5ad02f7 146 * true if the function object was found and removed, false otherwise.
phungductung 0:aa3fc5ad02f7 147 */
phungductung 0:aa3fc5ad02f7 148 bool remove(pFunctionPointer_t f);
phungductung 0:aa3fc5ad02f7 149
phungductung 0:aa3fc5ad02f7 150 /** Call all the functions in the chain in sequence
phungductung 0:aa3fc5ad02f7 151 */
phungductung 0:aa3fc5ad02f7 152 void call();
phungductung 0:aa3fc5ad02f7 153
phungductung 0:aa3fc5ad02f7 154 #ifdef MBED_OPERATORS
phungductung 0:aa3fc5ad02f7 155 void operator ()(void) {
phungductung 0:aa3fc5ad02f7 156 call();
phungductung 0:aa3fc5ad02f7 157 }
phungductung 0:aa3fc5ad02f7 158 pFunctionPointer_t operator [](int i) const {
phungductung 0:aa3fc5ad02f7 159 return get(i);
phungductung 0:aa3fc5ad02f7 160 }
phungductung 0:aa3fc5ad02f7 161 #endif
phungductung 0:aa3fc5ad02f7 162
phungductung 0:aa3fc5ad02f7 163 private:
phungductung 0:aa3fc5ad02f7 164 void _check_size();
phungductung 0:aa3fc5ad02f7 165 pFunctionPointer_t common_add(pFunctionPointer_t pf);
phungductung 0:aa3fc5ad02f7 166 pFunctionPointer_t common_add_front(pFunctionPointer_t pf);
phungductung 0:aa3fc5ad02f7 167
phungductung 0:aa3fc5ad02f7 168 pFunctionPointer_t* _chain;
phungductung 0:aa3fc5ad02f7 169 int _size;
phungductung 0:aa3fc5ad02f7 170 int _elements;
phungductung 0:aa3fc5ad02f7 171
phungductung 0:aa3fc5ad02f7 172 /* disallow copy constructor and assignment operators */
phungductung 0:aa3fc5ad02f7 173 private:
phungductung 0:aa3fc5ad02f7 174 CallChain(const CallChain&);
phungductung 0:aa3fc5ad02f7 175 CallChain & operator = (const CallChain&);
phungductung 0:aa3fc5ad02f7 176 };
phungductung 0:aa3fc5ad02f7 177
phungductung 0:aa3fc5ad02f7 178 } // namespace mbed
phungductung 0:aa3fc5ad02f7 179
phungductung 0:aa3fc5ad02f7 180 #endif
phungductung 0:aa3fc5ad02f7 181