Elijah Orr / mbed-renbed

Fork of the official mbed C/C SDK provides the software platform and libraries to build your applications for RenBED.

Dependents:   1-RenBuggyTimed RenBED_RGB RenBED_RGB_PWM RenBED_RGB

Fork of mbed by mbed official

FunctionPointer.h@44:24d45a770a51, 2012-11-21 (annotated)

Committer:
emilmont
Date:
Wed Nov 21 10:49:56 2012 +0000
Revision:
44:24d45a770a51
Parent:
43:e2ed12d17f06
Child:
54:71b101360fb9
Complete refactoring of the mbed library to move the target dependent code to a thin well defined layer, defining a proper object oriented C API to be implemented by the different silicon vendors.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
emilmont 44:24d45a770a51 1 /* mbed Microcontroller Library
emilmont 44:24d45a770a51 2 * Copyright (c) 2006-2012 ARM Limited
emilmont 44:24d45a770a51 3 *
emilmont 44:24d45a770a51 4 * Permission is hereby granted, free of charge, to any person obtaining a copy
emilmont 44:24d45a770a51 5 * of this software and associated documentation files (the "Software"), to deal
emilmont 44:24d45a770a51 6 * in the Software without restriction, including without limitation the rights
emilmont 44:24d45a770a51 7 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
emilmont 44:24d45a770a51 8 * copies of the Software, and to permit persons to whom the Software is
emilmont 44:24d45a770a51 9 * furnished to do so, subject to the following conditions:
emilmont 44:24d45a770a51 10 *
emilmont 44:24d45a770a51 11 * The above copyright notice and this permission notice shall be included in
emilmont 44:24d45a770a51 12 * all copies or substantial portions of the Software.
emilmont 44:24d45a770a51 13 *
emilmont 44:24d45a770a51 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
emilmont 44:24d45a770a51 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
emilmont 44:24d45a770a51 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
emilmont 44:24d45a770a51 17 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
emilmont 44:24d45a770a51 18 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
emilmont 44:24d45a770a51 19 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
emilmont 44:24d45a770a51 20 * SOFTWARE.
emilmont 44:24d45a770a51 21 */
simon.ford@mbed.co.uk 9:cf0d45ce28a6 22 #ifndef MBED_FUNCTIONPOINTER_H
simon.ford@mbed.co.uk 9:cf0d45ce28a6 23 #define MBED_FUNCTIONPOINTER_H
simon.ford@mbed.co.uk 9:cf0d45ce28a6 24
simon.ford@mbed.co.uk 18:b3c9f16cbb96 25 #include <string.h>
simon.ford@mbed.co.uk 9:cf0d45ce28a6 26
simon.ford@mbed.co.uk 9:cf0d45ce28a6 27 namespace mbed {
simon.ford@mbed.co.uk 9:cf0d45ce28a6 28
emilmont 43:e2ed12d17f06 29 /** A class for storing and calling a pointer to a static or member void function
simon.ford@mbed.co.uk 9:cf0d45ce28a6 30 */
simon.ford@mbed.co.uk 9:cf0d45ce28a6 31 class FunctionPointer {
simon.ford@mbed.co.uk 9:cf0d45ce28a6 32 public:
simon.ford@mbed.co.uk 9:cf0d45ce28a6 33
emilmont 43:e2ed12d17f06 34 /** Create a FunctionPointer, attaching a static function
emilmont 43:e2ed12d17f06 35 *
emilmont 43:e2ed12d17f06 36 * @param function The void static function to attach (default is none)
emilmont 43:e2ed12d17f06 37 */
emilmont 43:e2ed12d17f06 38 FunctionPointer(void (*function)(void) = 0);
simon.ford@mbed.co.uk 9:cf0d45ce28a6 39
emilmont 43:e2ed12d17f06 40 /** Create a FunctionPointer, attaching a member function
emilmont 43:e2ed12d17f06 41 *
emilmont 43:e2ed12d17f06 42 * @param object The object pointer to invoke the member function on (i.e. the this pointer)
emilmont 43:e2ed12d17f06 43 * @param function The address of the void member function to attach
emilmont 43:e2ed12d17f06 44 */
emilmont 44:24d45a770a51 45 template<typename T>
emilmont 43:e2ed12d17f06 46 FunctionPointer(T *object, void (T::*member)(void)) {
emilmont 43:e2ed12d17f06 47 attach(object, member);
emilmont 43:e2ed12d17f06 48 }
emilmont 44:24d45a770a51 49
emilmont 43:e2ed12d17f06 50 /** Attach a static function
emilmont 43:e2ed12d17f06 51 *
emilmont 43:e2ed12d17f06 52 * @param function The void static function to attach (default is none)
emilmont 43:e2ed12d17f06 53 */
emilmont 43:e2ed12d17f06 54 void attach(void (*function)(void) = 0);
emilmont 43:e2ed12d17f06 55
emilmont 43:e2ed12d17f06 56 /** Attach a member function
emilmont 43:e2ed12d17f06 57 *
emilmont 43:e2ed12d17f06 58 * @param object The object pointer to invoke the member function on (i.e. the this pointer)
emilmont 43:e2ed12d17f06 59 * @param function The address of the void member function to attach
emilmont 43:e2ed12d17f06 60 */
emilmont 43:e2ed12d17f06 61 template<typename T>
emilmont 43:e2ed12d17f06 62 void attach(T *object, void (T::*member)(void)) {
emilmont 43:e2ed12d17f06 63 _object = static_cast<void*>(object);
simon.ford@mbed.co.uk 9:cf0d45ce28a6 64 memcpy(_member, (char*)&member, sizeof(member));
emilmont 43:e2ed12d17f06 65 _membercaller = &FunctionPointer::membercaller<T>;
emilmont 43:e2ed12d17f06 66 _function = 0;
emilmont 43:e2ed12d17f06 67 }
emilmont 44:24d45a770a51 68
emilmont 43:e2ed12d17f06 69 /** Call the attached static or member function
emilmont 44:24d45a770a51 70 */
emilmont 43:e2ed12d17f06 71 void call();
emilmont 44:24d45a770a51 72
simon.ford@mbed.co.uk 9:cf0d45ce28a6 73 private:
emilmont 43:e2ed12d17f06 74 template<typename T>
emilmont 44:24d45a770a51 75 static void membercaller(void *object, char *member) {
emilmont 43:e2ed12d17f06 76 T* o = static_cast<T*>(object);
emilmont 43:e2ed12d17f06 77 void (T::*m)(void);
simon.ford@mbed.co.uk 9:cf0d45ce28a6 78 memcpy((char*)&m, member, sizeof(m));
emilmont 43:e2ed12d17f06 79 (o->*m)();
emilmont 43:e2ed12d17f06 80 }
emilmont 43:e2ed12d17f06 81
emilmont 44:24d45a770a51 82 void (*_function)(void); // static function pointer - 0 if none attached
emilmont 44:24d45a770a51 83 void *_object; // object this pointer - 0 if none attached
emilmont 44:24d45a770a51 84 char _member[16]; // raw member function pointer storage - converted back by registered _membercaller
emilmont 44:24d45a770a51 85 void (*_membercaller)(void*, char*); // registered membercaller function to convert back and call _member on _object
simon.ford@mbed.co.uk 9:cf0d45ce28a6 86 };
simon.ford@mbed.co.uk 9:cf0d45ce28a6 87
rolf.meyer@arm.com 11:1c1ebd0324fa 88 } // namespace mbed
simon.ford@mbed.co.uk 9:cf0d45ce28a6 89
simon.ford@mbed.co.uk 9:cf0d45ce28a6 90 #endif