Greg Steiert / maxim_dev

Dependents:   sensomed

platform/CallChain.h@0:0e018d759a2a, 2016-11-08 (annotated)

Committer:
switches
Date:
Tue Nov 08 18:27:11 2016 +0000
Revision:
0:0e018d759a2a
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switches 0:0e018d759a2a 1 /* mbed Microcontroller Library
switches 0:0e018d759a2a 2 * Copyright (c) 2006-2013 ARM Limited
switches 0:0e018d759a2a 3 *
switches 0:0e018d759a2a 4 * Licensed under the Apache License, Version 2.0 (the "License");
switches 0:0e018d759a2a 5 * you may not use this file except in compliance with the License.
switches 0:0e018d759a2a 6 * You may obtain a copy of the License at
switches 0:0e018d759a2a 7 *
switches 0:0e018d759a2a 8 * http://www.apache.org/licenses/LICENSE-2.0
switches 0:0e018d759a2a 9 *
switches 0:0e018d759a2a 10 * Unless required by applicable law or agreed to in writing, software
switches 0:0e018d759a2a 11 * distributed under the License is distributed on an "AS IS" BASIS,
switches 0:0e018d759a2a 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
switches 0:0e018d759a2a 13 * See the License for the specific language governing permissions and
switches 0:0e018d759a2a 14 * limitations under the License.
switches 0:0e018d759a2a 15 */
switches 0:0e018d759a2a 16 #ifndef MBED_CALLCHAIN_H
switches 0:0e018d759a2a 17 #define MBED_CALLCHAIN_H
switches 0:0e018d759a2a 18
switches 0:0e018d759a2a 19 #include "platform/Callback.h"
switches 0:0e018d759a2a 20 #include "platform/toolchain.h"
switches 0:0e018d759a2a 21 #include <string.h>
switches 0:0e018d759a2a 22
switches 0:0e018d759a2a 23 namespace mbed {
switches 0:0e018d759a2a 24 /** \addtogroup platform */
switches 0:0e018d759a2a 25 /** @{*/
switches 0:0e018d759a2a 26
switches 0:0e018d759a2a 27 /** Group one or more functions in an instance of a CallChain, then call them in
switches 0:0e018d759a2a 28 * sequence using CallChain::call(). Used mostly by the interrupt chaining code,
switches 0:0e018d759a2a 29 * but can be used for other purposes.
switches 0:0e018d759a2a 30 *
switches 0:0e018d759a2a 31 * @Note Synchronization level: Not protected
switches 0:0e018d759a2a 32 *
switches 0:0e018d759a2a 33 * Example:
switches 0:0e018d759a2a 34 * @code
switches 0:0e018d759a2a 35 * #include "mbed.h"
switches 0:0e018d759a2a 36 *
switches 0:0e018d759a2a 37 * CallChain chain;
switches 0:0e018d759a2a 38 *
switches 0:0e018d759a2a 39 * void first(void) {
switches 0:0e018d759a2a 40 * printf("'first' function.\n");
switches 0:0e018d759a2a 41 * }
switches 0:0e018d759a2a 42 *
switches 0:0e018d759a2a 43 * void second(void) {
switches 0:0e018d759a2a 44 * printf("'second' function.\n");
switches 0:0e018d759a2a 45 * }
switches 0:0e018d759a2a 46 *
switches 0:0e018d759a2a 47 * class Test {
switches 0:0e018d759a2a 48 * public:
switches 0:0e018d759a2a 49 * void f(void) {
switches 0:0e018d759a2a 50 * printf("A::f (class member).\n");
switches 0:0e018d759a2a 51 * }
switches 0:0e018d759a2a 52 * };
switches 0:0e018d759a2a 53 *
switches 0:0e018d759a2a 54 * int main() {
switches 0:0e018d759a2a 55 * Test test;
switches 0:0e018d759a2a 56 *
switches 0:0e018d759a2a 57 * chain.add(second);
switches 0:0e018d759a2a 58 * chain.add_front(first);
switches 0:0e018d759a2a 59 * chain.add(&test, &Test::f);
switches 0:0e018d759a2a 60 * chain.call();
switches 0:0e018d759a2a 61 * }
switches 0:0e018d759a2a 62 * @endcode
switches 0:0e018d759a2a 63 */
switches 0:0e018d759a2a 64
switches 0:0e018d759a2a 65 typedef Callback<void()> *pFunctionPointer_t;
switches 0:0e018d759a2a 66 class CallChainLink;
switches 0:0e018d759a2a 67
switches 0:0e018d759a2a 68 class CallChain {
switches 0:0e018d759a2a 69 public:
switches 0:0e018d759a2a 70 /** Create an empty chain
switches 0:0e018d759a2a 71 *
switches 0:0e018d759a2a 72 * @param size (optional) Initial size of the chain
switches 0:0e018d759a2a 73 */
switches 0:0e018d759a2a 74 CallChain(int size = 4);
switches 0:0e018d759a2a 75 virtual ~CallChain();
switches 0:0e018d759a2a 76
switches 0:0e018d759a2a 77 /** Add a function at the end of the chain
switches 0:0e018d759a2a 78 *
switches 0:0e018d759a2a 79 * @param func A pointer to a void function
switches 0:0e018d759a2a 80 *
switches 0:0e018d759a2a 81 * @returns
switches 0:0e018d759a2a 82 * The function object created for 'func'
switches 0:0e018d759a2a 83 */
switches 0:0e018d759a2a 84 pFunctionPointer_t add(Callback<void()> func);
switches 0:0e018d759a2a 85
switches 0:0e018d759a2a 86 /** Add a function at the end of the chain
switches 0:0e018d759a2a 87 *
switches 0:0e018d759a2a 88 * @param obj pointer to the object to call the member function on
switches 0:0e018d759a2a 89 * @param method pointer to the member function to be called
switches 0:0e018d759a2a 90 *
switches 0:0e018d759a2a 91 * @returns
switches 0:0e018d759a2a 92 * The function object created for 'obj' and 'method'
switches 0:0e018d759a2a 93 *
switches 0:0e018d759a2a 94 * @deprecated
switches 0:0e018d759a2a 95 * The add function does not support cv-qualifiers. Replaced by
switches 0:0e018d759a2a 96 * add(callback(obj, method)).
switches 0:0e018d759a2a 97 */
switches 0:0e018d759a2a 98 template<typename T, typename M>
switches 0:0e018d759a2a 99 MBED_DEPRECATED_SINCE("mbed-os-5.1",
switches 0:0e018d759a2a 100 "The add function does not support cv-qualifiers. Replaced by "
switches 0:0e018d759a2a 101 "add(callback(obj, method)).")
switches 0:0e018d759a2a 102 pFunctionPointer_t add(T *obj, M method) {
switches 0:0e018d759a2a 103 return add(callback(obj, method));
switches 0:0e018d759a2a 104 }
switches 0:0e018d759a2a 105
switches 0:0e018d759a2a 106 /** Add a function at the beginning of the chain
switches 0:0e018d759a2a 107 *
switches 0:0e018d759a2a 108 * @param func A pointer to a void function
switches 0:0e018d759a2a 109 *
switches 0:0e018d759a2a 110 * @returns
switches 0:0e018d759a2a 111 * The function object created for 'func'
switches 0:0e018d759a2a 112 */
switches 0:0e018d759a2a 113 pFunctionPointer_t add_front(Callback<void()> func);
switches 0:0e018d759a2a 114
switches 0:0e018d759a2a 115 /** Add a function at the beginning of the chain
switches 0:0e018d759a2a 116 *
switches 0:0e018d759a2a 117 * @param tptr pointer to the object to call the member function on
switches 0:0e018d759a2a 118 * @param mptr pointer to the member function to be called
switches 0:0e018d759a2a 119 *
switches 0:0e018d759a2a 120 * @returns
switches 0:0e018d759a2a 121 * The function object created for 'tptr' and 'mptr'
switches 0:0e018d759a2a 122 *
switches 0:0e018d759a2a 123 * @deprecated
switches 0:0e018d759a2a 124 * The add_front function does not support cv-qualifiers. Replaced by
switches 0:0e018d759a2a 125 * add_front(callback(obj, method)).
switches 0:0e018d759a2a 126 */
switches 0:0e018d759a2a 127 template<typename T, typename M>
switches 0:0e018d759a2a 128 MBED_DEPRECATED_SINCE("mbed-os-5.1",
switches 0:0e018d759a2a 129 "The add_front function does not support cv-qualifiers. Replaced by "
switches 0:0e018d759a2a 130 "add_front(callback(obj, method)).")
switches 0:0e018d759a2a 131 pFunctionPointer_t add_front(T *obj, M method) {
switches 0:0e018d759a2a 132 return add_front(callback(obj, method));
switches 0:0e018d759a2a 133 }
switches 0:0e018d759a2a 134
switches 0:0e018d759a2a 135 /** Get the number of functions in the chain
switches 0:0e018d759a2a 136 */
switches 0:0e018d759a2a 137 int size() const;
switches 0:0e018d759a2a 138
switches 0:0e018d759a2a 139 /** Get a function object from the chain
switches 0:0e018d759a2a 140 *
switches 0:0e018d759a2a 141 * @param i function object index
switches 0:0e018d759a2a 142 *
switches 0:0e018d759a2a 143 * @returns
switches 0:0e018d759a2a 144 * The function object at position 'i' in the chain
switches 0:0e018d759a2a 145 */
switches 0:0e018d759a2a 146 pFunctionPointer_t get(int i) const;
switches 0:0e018d759a2a 147
switches 0:0e018d759a2a 148 /** Look for a function object in the call chain
switches 0:0e018d759a2a 149 *
switches 0:0e018d759a2a 150 * @param f the function object to search
switches 0:0e018d759a2a 151 *
switches 0:0e018d759a2a 152 * @returns
switches 0:0e018d759a2a 153 * The index of the function object if found, -1 otherwise.
switches 0:0e018d759a2a 154 */
switches 0:0e018d759a2a 155 int find(pFunctionPointer_t f) const;
switches 0:0e018d759a2a 156
switches 0:0e018d759a2a 157 /** Clear the call chain (remove all functions in the chain).
switches 0:0e018d759a2a 158 */
switches 0:0e018d759a2a 159 void clear();
switches 0:0e018d759a2a 160
switches 0:0e018d759a2a 161 /** Remove a function object from the chain
switches 0:0e018d759a2a 162 *
switches 0:0e018d759a2a 163 * @arg f the function object to remove
switches 0:0e018d759a2a 164 *
switches 0:0e018d759a2a 165 * @returns
switches 0:0e018d759a2a 166 * true if the function object was found and removed, false otherwise.
switches 0:0e018d759a2a 167 */
switches 0:0e018d759a2a 168 bool remove(pFunctionPointer_t f);
switches 0:0e018d759a2a 169
switches 0:0e018d759a2a 170 /** Call all the functions in the chain in sequence
switches 0:0e018d759a2a 171 */
switches 0:0e018d759a2a 172 void call();
switches 0:0e018d759a2a 173
switches 0:0e018d759a2a 174 void operator ()(void) {
switches 0:0e018d759a2a 175 call();
switches 0:0e018d759a2a 176 }
switches 0:0e018d759a2a 177 pFunctionPointer_t operator [](int i) const {
switches 0:0e018d759a2a 178 return get(i);
switches 0:0e018d759a2a 179 }
switches 0:0e018d759a2a 180
switches 0:0e018d759a2a 181 /* disallow copy constructor and assignment operators */
switches 0:0e018d759a2a 182 private:
switches 0:0e018d759a2a 183 CallChain(const CallChain&);
switches 0:0e018d759a2a 184 CallChain & operator = (const CallChain&);
switches 0:0e018d759a2a 185 CallChainLink *_chain;
switches 0:0e018d759a2a 186 };
switches 0:0e018d759a2a 187
switches 0:0e018d759a2a 188 } // namespace mbed
switches 0:0e018d759a2a 189
switches 0:0e018d759a2a 190 #endif
switches 0:0e018d759a2a 191
switches 0:0e018d759a2a 192 /** @}*/