b luo / mbed-dev

mbed library sources. With a patch for the can_api

Fork of mbed-dev by mbed official

platform/CallChain.cpp@151:91825d030f9b, 2016-11-14 (annotated)

Committer:
DangerousElectrician
Date:
Mon Nov 14 04:39:23 2016 +0000
Revision:
151:91825d030f9b
Parent:
149:156823d33999 
stuff changed?

Who changed what in which revision?

UserRevisionLine numberNew contents of line
<> 149:156823d33999 1 #include "platform/CallChain.h"
<> 149:156823d33999 2 #include "cmsis.h"
<> 149:156823d33999 3 #include "platform/critical.h"
<> 149:156823d33999 4
<> 149:156823d33999 5 namespace mbed {
<> 149:156823d33999 6
<> 149:156823d33999 7 class CallChainLink {
<> 149:156823d33999 8 public:
<> 149:156823d33999 9 CallChainLink(): cb(), next(NULL) {
<> 149:156823d33999 10 // No work to do
<> 149:156823d33999 11 }
<> 149:156823d33999 12
<> 149:156823d33999 13 CallChainLink(Callback<void()> &callback): cb(callback), next(NULL) {
<> 149:156823d33999 14 // No work to do
<> 149:156823d33999 15 }
<> 149:156823d33999 16 Callback<void()> cb;
<> 149:156823d33999 17 CallChainLink * next;
<> 149:156823d33999 18 };
<> 149:156823d33999 19
<> 149:156823d33999 20 CallChain::CallChain(int size) : _chain(NULL) {
<> 149:156823d33999 21 // No work to do
<> 149:156823d33999 22 }
<> 149:156823d33999 23
<> 149:156823d33999 24 CallChain::~CallChain() {
<> 149:156823d33999 25 clear();
<> 149:156823d33999 26 }
<> 149:156823d33999 27
<> 149:156823d33999 28 pFunctionPointer_t CallChain::add(Callback<void()> func) {
<> 149:156823d33999 29 CallChainLink *new_link = new CallChainLink(func);
<> 149:156823d33999 30 if (NULL == _chain) {
<> 149:156823d33999 31 _chain = new_link;
<> 149:156823d33999 32 return &new_link->cb;
<> 149:156823d33999 33 }
<> 149:156823d33999 34
<> 149:156823d33999 35 CallChainLink *link = _chain;
<> 149:156823d33999 36 while (true) {
<> 149:156823d33999 37 if (NULL == link->next) {
<> 149:156823d33999 38 link->next = new_link;
<> 149:156823d33999 39 return &new_link->cb;
<> 149:156823d33999 40 }
<> 149:156823d33999 41 link = link->next;
<> 149:156823d33999 42 }
<> 149:156823d33999 43 }
<> 149:156823d33999 44
<> 149:156823d33999 45 pFunctionPointer_t CallChain::add_front(Callback<void()> func) {
<> 149:156823d33999 46 CallChainLink *link = new CallChainLink(func);
<> 149:156823d33999 47 link->next = _chain;
<> 149:156823d33999 48 _chain = link;
<> 149:156823d33999 49 return &link->cb;
<> 149:156823d33999 50 }
<> 149:156823d33999 51
<> 149:156823d33999 52 int CallChain::size() const {
<> 149:156823d33999 53 CallChainLink *link = _chain;
<> 149:156823d33999 54 int elements = 0;
<> 149:156823d33999 55 while (link != NULL) {
<> 149:156823d33999 56 elements++;
<> 149:156823d33999 57 link = link->next;
<> 149:156823d33999 58 }
<> 149:156823d33999 59 return elements;
<> 149:156823d33999 60 }
<> 149:156823d33999 61
<> 149:156823d33999 62 pFunctionPointer_t CallChain::get(int idx) const {
<> 149:156823d33999 63 CallChainLink *link = _chain;
<> 149:156823d33999 64 for (int i = 0; i < idx; i++) {
<> 149:156823d33999 65 if (NULL == link) {
<> 149:156823d33999 66 break;
<> 149:156823d33999 67 }
<> 149:156823d33999 68 link = link->next;
<> 149:156823d33999 69 }
<> 149:156823d33999 70 return &link->cb;
<> 149:156823d33999 71 }
<> 149:156823d33999 72
<> 149:156823d33999 73 int CallChain::find(pFunctionPointer_t f) const {
<> 149:156823d33999 74 CallChainLink *link = _chain;
<> 149:156823d33999 75 int i = 0;
<> 149:156823d33999 76 while (link != NULL) {
<> 149:156823d33999 77 if (f == &link->cb) {
<> 149:156823d33999 78 return i;
<> 149:156823d33999 79 }
<> 149:156823d33999 80 i++;
<> 149:156823d33999 81 link = link->next;
<> 149:156823d33999 82 }
<> 149:156823d33999 83 return -1;
<> 149:156823d33999 84 }
<> 149:156823d33999 85
<> 149:156823d33999 86 void CallChain::clear() {
<> 149:156823d33999 87 CallChainLink *link = _chain;
<> 149:156823d33999 88 _chain = NULL;
<> 149:156823d33999 89 while (link != NULL) {
<> 149:156823d33999 90 CallChainLink *temp = link->next;
<> 149:156823d33999 91 delete link;
<> 149:156823d33999 92 link = temp;
<> 149:156823d33999 93 }
<> 149:156823d33999 94 }
<> 149:156823d33999 95
<> 149:156823d33999 96 bool CallChain::remove(pFunctionPointer_t f) {
<> 149:156823d33999 97 CallChainLink *link = _chain;
<> 149:156823d33999 98 while (link != NULL) {
<> 149:156823d33999 99 if (f == &link->cb) {
<> 149:156823d33999 100 delete link;
<> 149:156823d33999 101 return true;
<> 149:156823d33999 102 }
<> 149:156823d33999 103 link = link->next;
<> 149:156823d33999 104 }
<> 149:156823d33999 105 return false;
<> 149:156823d33999 106 }
<> 149:156823d33999 107
<> 149:156823d33999 108 void CallChain::call() {
<> 149:156823d33999 109 CallChainLink *link = _chain;
<> 149:156823d33999 110 while (link != NULL) {
<> 149:156823d33999 111 link->cb.call();
<> 149:156823d33999 112 link = link->next;
<> 149:156823d33999 113 }
<> 149:156823d33999 114 }
<> 149:156823d33999 115
<> 149:156823d33999 116 } // namespace mbed