Wiljan Arias / WhexReefMonitor

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Dependencies:   mbed-rtos EthernetInterface FatFileSystemCpp MCP23S17 SDFileSystem mbed

Fork of HTTPServerHelloWorld by Donatien Garnier

mbed/FunctionPointer.h@3:5dc0023e6284, 2014-01-31 (annotated)

Committer:
wyunreal
Date:
Fri Jan 31 23:19:28 2014 +0000
Revision:
3:5dc0023e6284
First approach of EthernetService class

Who changed what in which revision?

UserRevisionLine numberNew contents of line
wyunreal 3:5dc0023e6284 1 /* mbed Microcontroller Library - FunctionPointer
wyunreal 3:5dc0023e6284 2 * Copyright (c) 2007-2009 ARM Limited. All rights reserved.
wyunreal 3:5dc0023e6284 3 * sford
wyunreal 3:5dc0023e6284 4 */
wyunreal 3:5dc0023e6284 5
wyunreal 3:5dc0023e6284 6 #ifndef MBED_FUNCTIONPOINTER_H
wyunreal 3:5dc0023e6284 7 #define MBED_FUNCTIONPOINTER_H
wyunreal 3:5dc0023e6284 8
wyunreal 3:5dc0023e6284 9 #include <string.h>
wyunreal 3:5dc0023e6284 10
wyunreal 3:5dc0023e6284 11 namespace mbed {
wyunreal 3:5dc0023e6284 12
wyunreal 3:5dc0023e6284 13 /* Class FunctionPointer
wyunreal 3:5dc0023e6284 14 * A class for storing and calling a pointer to a static or member void function
wyunreal 3:5dc0023e6284 15 */
wyunreal 3:5dc0023e6284 16 class FunctionPointer {
wyunreal 3:5dc0023e6284 17
wyunreal 3:5dc0023e6284 18 public:
wyunreal 3:5dc0023e6284 19
wyunreal 3:5dc0023e6284 20 /* Constructor FunctionPointer
wyunreal 3:5dc0023e6284 21 * Create a FunctionPointer, attaching a static function
wyunreal 3:5dc0023e6284 22 *
wyunreal 3:5dc0023e6284 23 * Variables
wyunreal 3:5dc0023e6284 24 * function - The void static function to attach (default is none)
wyunreal 3:5dc0023e6284 25 */
wyunreal 3:5dc0023e6284 26 FunctionPointer(void (*function)(void) = 0);
wyunreal 3:5dc0023e6284 27
wyunreal 3:5dc0023e6284 28 /* Constructor FunctionPointer
wyunreal 3:5dc0023e6284 29 * Create a FunctionPointer, attaching a member function
wyunreal 3:5dc0023e6284 30 *
wyunreal 3:5dc0023e6284 31 * Variables
wyunreal 3:5dc0023e6284 32 * object - The object pointer to invoke the member function on (i.e. the this pointer)
wyunreal 3:5dc0023e6284 33 * function - The address of the void member function to attach
wyunreal 3:5dc0023e6284 34 */
wyunreal 3:5dc0023e6284 35 template<typename T>
wyunreal 3:5dc0023e6284 36 FunctionPointer(T *object, void (T::*member)(void)) {
wyunreal 3:5dc0023e6284 37 attach(object, member);
wyunreal 3:5dc0023e6284 38 }
wyunreal 3:5dc0023e6284 39
wyunreal 3:5dc0023e6284 40 /* Function attach
wyunreal 3:5dc0023e6284 41 * Attach a static function
wyunreal 3:5dc0023e6284 42 *
wyunreal 3:5dc0023e6284 43 * Variables
wyunreal 3:5dc0023e6284 44 * function - The void static function to attach (default is none)
wyunreal 3:5dc0023e6284 45 */
wyunreal 3:5dc0023e6284 46 void attach(void (*function)(void) = 0);
wyunreal 3:5dc0023e6284 47
wyunreal 3:5dc0023e6284 48 /* Function attach
wyunreal 3:5dc0023e6284 49 * Attach a member function
wyunreal 3:5dc0023e6284 50 *
wyunreal 3:5dc0023e6284 51 * Variables
wyunreal 3:5dc0023e6284 52 * object - The object pointer to invoke the member function on (i.e. the this pointer)
wyunreal 3:5dc0023e6284 53 * function - The address of the void member function to attach
wyunreal 3:5dc0023e6284 54 */
wyunreal 3:5dc0023e6284 55 template<typename T>
wyunreal 3:5dc0023e6284 56 void attach(T *object, void (T::*member)(void)) {
wyunreal 3:5dc0023e6284 57 _object = static_cast<void*>(object);
wyunreal 3:5dc0023e6284 58 memcpy(_member, (char*)&member, sizeof(member));
wyunreal 3:5dc0023e6284 59 _membercaller = &FunctionPointer::membercaller<T>;
wyunreal 3:5dc0023e6284 60 _function = 0;
wyunreal 3:5dc0023e6284 61 }
wyunreal 3:5dc0023e6284 62
wyunreal 3:5dc0023e6284 63 /* Function call
wyunreal 3:5dc0023e6284 64 * Call the attached static or member function
wyunreal 3:5dc0023e6284 65 */
wyunreal 3:5dc0023e6284 66 void call();
wyunreal 3:5dc0023e6284 67
wyunreal 3:5dc0023e6284 68 private:
wyunreal 3:5dc0023e6284 69
wyunreal 3:5dc0023e6284 70 template<typename T>
wyunreal 3:5dc0023e6284 71 static void membercaller(void *object, char *member) {
wyunreal 3:5dc0023e6284 72 T* o = static_cast<T*>(object);
wyunreal 3:5dc0023e6284 73 void (T::*m)(void);
wyunreal 3:5dc0023e6284 74 memcpy((char*)&m, member, sizeof(m));
wyunreal 3:5dc0023e6284 75 (o->*m)();
wyunreal 3:5dc0023e6284 76 }
wyunreal 3:5dc0023e6284 77
wyunreal 3:5dc0023e6284 78 void (*_function)(void); // static function pointer - 0 if none attached
wyunreal 3:5dc0023e6284 79 void *_object; // object this pointer - 0 if none attached
wyunreal 3:5dc0023e6284 80 char _member[16]; // raw member function pointer storage - converted back by registered _membercaller
wyunreal 3:5dc0023e6284 81 void (*_membercaller)(void*, char*); // registered membercaller function to convert back and call _member on _object
wyunreal 3:5dc0023e6284 82
wyunreal 3:5dc0023e6284 83 };
wyunreal 3:5dc0023e6284 84
wyunreal 3:5dc0023e6284 85 } // namespace mbed
wyunreal 3:5dc0023e6284 86
wyunreal 3:5dc0023e6284 87 #endif