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mbed library sources

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Superseded

This library was superseded by mbed-dev - https://os.mbed.com/users/mbed_official/code/mbed-dev/.

Development branch of the mbed library sources. This library is kept in synch with the latest changes from the mbed SDK and it is not guaranteed to work.

If you are looking for a stable and tested release, please import one of the official mbed library releases:

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The official Mbed 2 C/C++ SDK provides the software platform and libraries to build your applications.

Last commit 20 Feb 2019 by mbed official

api/FunctionPointer.h@10:3bc89ef62ce7, 2013-06-14 (annotated)

Committer:
emilmont
Date:
Fri Jun 14 17:49:17 2013 +0100
Revision:
10:3bc89ef62ce7
Parent:
9:0ce32e54c9a7
Child:
13:0645d8841f51
Unify mbed library sources

Who changed what in which revision?

UserRevisionLine numberNew contents of line
emilmont 10:3bc89ef62ce7 1 /* mbed Microcontroller Library
emilmont 10:3bc89ef62ce7 2 * Copyright (c) 2006-2013 ARM Limited
emilmont 10:3bc89ef62ce7 3 *
emilmont 10:3bc89ef62ce7 4 * Licensed under the Apache License, Version 2.0 (the "License");
emilmont 10:3bc89ef62ce7 5 * you may not use this file except in compliance with the License.
emilmont 10:3bc89ef62ce7 6 * You may obtain a copy of the License at
emilmont 10:3bc89ef62ce7 7 *
emilmont 10:3bc89ef62ce7 8 * http://www.apache.org/licenses/LICENSE-2.0
emilmont 10:3bc89ef62ce7 9 *
emilmont 10:3bc89ef62ce7 10 * Unless required by applicable law or agreed to in writing, software
emilmont 10:3bc89ef62ce7 11 * distributed under the License is distributed on an "AS IS" BASIS,
emilmont 10:3bc89ef62ce7 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
emilmont 10:3bc89ef62ce7 13 * See the License for the specific language governing permissions and
emilmont 10:3bc89ef62ce7 14 * limitations under the License.
emilmont 10:3bc89ef62ce7 15 */
emilmont 10:3bc89ef62ce7 16 #ifndef MBED_FUNCTIONPOINTER_H
emilmont 10:3bc89ef62ce7 17 #define MBED_FUNCTIONPOINTER_H
emilmont 10:3bc89ef62ce7 18
emilmont 10:3bc89ef62ce7 19 #include <string.h>
emilmont 10:3bc89ef62ce7 20
emilmont 10:3bc89ef62ce7 21 namespace mbed {
emilmont 10:3bc89ef62ce7 22
emilmont 10:3bc89ef62ce7 23 /** A class for storing and calling a pointer to a static or member void function
emilmont 10:3bc89ef62ce7 24 */
emilmont 10:3bc89ef62ce7 25 class FunctionPointer {
emilmont 10:3bc89ef62ce7 26 public:
emilmont 10:3bc89ef62ce7 27
emilmont 10:3bc89ef62ce7 28 /** Create a FunctionPointer, attaching a static function
emilmont 10:3bc89ef62ce7 29 *
emilmont 10:3bc89ef62ce7 30 * @param function The void static function to attach (default is none)
emilmont 10:3bc89ef62ce7 31 */
emilmont 10:3bc89ef62ce7 32 FunctionPointer(void (*function)(void) = 0);
emilmont 10:3bc89ef62ce7 33
emilmont 10:3bc89ef62ce7 34 /** Create a FunctionPointer, attaching a member function
emilmont 10:3bc89ef62ce7 35 *
emilmont 10:3bc89ef62ce7 36 * @param object The object pointer to invoke the member function on (i.e. the this pointer)
emilmont 10:3bc89ef62ce7 37 * @param function The address of the void member function to attach
emilmont 10:3bc89ef62ce7 38 */
emilmont 10:3bc89ef62ce7 39 template<typename T>
emilmont 10:3bc89ef62ce7 40 FunctionPointer(T *object, void (T::*member)(void)) {
emilmont 10:3bc89ef62ce7 41 attach(object, member);
emilmont 10:3bc89ef62ce7 42 }
emilmont 10:3bc89ef62ce7 43
emilmont 10:3bc89ef62ce7 44 /** Attach a static function
emilmont 10:3bc89ef62ce7 45 *
emilmont 10:3bc89ef62ce7 46 * @param function The void static function to attach (default is none)
emilmont 10:3bc89ef62ce7 47 */
emilmont 10:3bc89ef62ce7 48 void attach(void (*function)(void) = 0);
emilmont 10:3bc89ef62ce7 49
emilmont 10:3bc89ef62ce7 50 /** Attach a member function
emilmont 10:3bc89ef62ce7 51 *
emilmont 10:3bc89ef62ce7 52 * @param object The object pointer to invoke the member function on (i.e. the this pointer)
emilmont 10:3bc89ef62ce7 53 * @param function The address of the void member function to attach
emilmont 10:3bc89ef62ce7 54 */
emilmont 10:3bc89ef62ce7 55 template<typename T>
emilmont 10:3bc89ef62ce7 56 void attach(T *object, void (T::*member)(void)) {
emilmont 10:3bc89ef62ce7 57 _object = static_cast<void*>(object);
emilmont 10:3bc89ef62ce7 58 memcpy(_member, (char*)&member, sizeof(member));
emilmont 10:3bc89ef62ce7 59 _membercaller = &FunctionPointer::membercaller<T>;
emilmont 10:3bc89ef62ce7 60 _function = 0;
emilmont 10:3bc89ef62ce7 61 }
emilmont 10:3bc89ef62ce7 62
emilmont 10:3bc89ef62ce7 63 /** Call the attached static or member function
emilmont 10:3bc89ef62ce7 64 */
emilmont 10:3bc89ef62ce7 65 void call();
emilmont 10:3bc89ef62ce7 66
emilmont 10:3bc89ef62ce7 67 private:
emilmont 10:3bc89ef62ce7 68 template<typename T>
emilmont 10:3bc89ef62ce7 69 static void membercaller(void *object, char *member) {
emilmont 10:3bc89ef62ce7 70 T* o = static_cast<T*>(object);
emilmont 10:3bc89ef62ce7 71 void (T::*m)(void);
emilmont 10:3bc89ef62ce7 72 memcpy((char*)&m, member, sizeof(m));
emilmont 10:3bc89ef62ce7 73 (o->*m)();
emilmont 10:3bc89ef62ce7 74 }
emilmont 10:3bc89ef62ce7 75
emilmont 10:3bc89ef62ce7 76 void (*_function)(void); // static function pointer - 0 if none attached
emilmont 10:3bc89ef62ce7 77 void *_object; // object this pointer - 0 if none attached
emilmont 10:3bc89ef62ce7 78 char _member[16]; // raw member function pointer storage - converted back by registered _membercaller
emilmont 10:3bc89ef62ce7 79 void (*_membercaller)(void*, char*); // registered membercaller function to convert back and call _member on _object
emilmont 10:3bc89ef62ce7 80 };
emilmont 10:3bc89ef62ce7 81
emilmont 10:3bc89ef62ce7 82 } // namespace mbed
emilmont 10:3bc89ef62ce7 83
emilmont 10:3bc89ef62ce7 84 #endif