mbed_controller / mbed-rpc

mbed RPC for none LPC_xxx platform

Dependents:   mbed_controller_demo

Fork of mbed-rpc by mbed official

rpc.cpp@11:f80f9c2bfb8c, 2015-06-17 (annotated)

Committer:
hillkim7
Date:
Wed Jun 17 01:54:37 2015 +0000
Revision:
11:f80f9c2bfb8c
Parent:
1:6919289a5946 
Fix console stack overflow error. Stack size of console is enlarged.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 0:efe8172b4113 1 /* mbed Microcontroller Library
emilmont 1:6919289a5946 2 * Copyright (c) 2006-2013 ARM Limited
mbed_official 0:efe8172b4113 3 *
emilmont 1:6919289a5946 4 * Licensed under the Apache License, Version 2.0 (the "License");
emilmont 1:6919289a5946 5 * you may not use this file except in compliance with the License.
emilmont 1:6919289a5946 6 * You may obtain a copy of the License at
mbed_official 0:efe8172b4113 7 *
emilmont 1:6919289a5946 8 * http://www.apache.org/licenses/LICENSE-2.0
mbed_official 0:efe8172b4113 9 *
emilmont 1:6919289a5946 10 * Unless required by applicable law or agreed to in writing, software
emilmont 1:6919289a5946 11 * distributed under the License is distributed on an "AS IS" BASIS,
emilmont 1:6919289a5946 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
emilmont 1:6919289a5946 13 * See the License for the specific language governing permissions and
emilmont 1:6919289a5946 14 * limitations under the License.
mbed_official 0:efe8172b4113 15 */
mbed_official 0:efe8172b4113 16 #include "rpc.h"
mbed_official 0:efe8172b4113 17
mbed_official 0:efe8172b4113 18 using namespace std;
mbed_official 0:efe8172b4113 19
mbed_official 0:efe8172b4113 20 namespace mbed {
mbed_official 0:efe8172b4113 21
mbed_official 0:efe8172b4113 22 RPC::RPC(const char *name) {
mbed_official 0:efe8172b4113 23 _from_construct = false;
mbed_official 0:efe8172b4113 24 if (name != NULL) {
mbed_official 0:efe8172b4113 25 _name = new char[strlen(name) + 1];
mbed_official 0:efe8172b4113 26 strcpy(_name, name);
mbed_official 0:efe8172b4113 27 } else {
mbed_official 0:efe8172b4113 28 _name = new char[12];
mbed_official 0:efe8172b4113 29 sprintf(_name, "obj%p", this);
mbed_official 0:efe8172b4113 30 }
mbed_official 0:efe8172b4113 31 // put this object at head of the list
mbed_official 0:efe8172b4113 32 _next = _head;
mbed_official 0:efe8172b4113 33 _head = this;
mbed_official 0:efe8172b4113 34 }
mbed_official 0:efe8172b4113 35
mbed_official 0:efe8172b4113 36 RPC::~RPC() {
mbed_official 0:efe8172b4113 37 // remove this object from the list
mbed_official 0:efe8172b4113 38 if (_head == this) { // first in the list, so just drop me
mbed_official 0:efe8172b4113 39 _head = _next;
mbed_official 0:efe8172b4113 40 } else { // find the object before me, then drop me
mbed_official 0:efe8172b4113 41 RPC* p = _head;
mbed_official 0:efe8172b4113 42 while (p->_next != this) {
mbed_official 0:efe8172b4113 43 p = p->_next;
mbed_official 0:efe8172b4113 44 }
mbed_official 0:efe8172b4113 45 p->_next = _next;
mbed_official 0:efe8172b4113 46 }
mbed_official 0:efe8172b4113 47 }
mbed_official 0:efe8172b4113 48
mbed_official 0:efe8172b4113 49 const rpc_method *RPC::get_rpc_methods() {
mbed_official 0:efe8172b4113 50 static const rpc_method methods[] = {
mbed_official 0:efe8172b4113 51 {"delete", rpc_method_caller<RPC, &RPC::delete_self> },
mbed_official 0:efe8172b4113 52 RPC_METHOD_END
mbed_official 0:efe8172b4113 53 };
mbed_official 0:efe8172b4113 54 return methods;
mbed_official 0:efe8172b4113 55 }
mbed_official 0:efe8172b4113 56
mbed_official 0:efe8172b4113 57 RPC *RPC::lookup(const char *name) {
mbed_official 0:efe8172b4113 58 size_t len = strlen(name);
mbed_official 0:efe8172b4113 59 for (RPC *p = _head; p != NULL; p = p->_next) {
mbed_official 0:efe8172b4113 60 /* Check that p->_name matches name and is the correct length */
mbed_official 0:efe8172b4113 61 if (strncmp(p->_name, name, len) == 0 && (strlen(p->_name) == len)) {
mbed_official 0:efe8172b4113 62 return p;
mbed_official 0:efe8172b4113 63 }
mbed_official 0:efe8172b4113 64 }
mbed_official 0:efe8172b4113 65 return NULL;
mbed_official 0:efe8172b4113 66 }
mbed_official 0:efe8172b4113 67
mbed_official 0:efe8172b4113 68 void RPC::delete_self() {
mbed_official 0:efe8172b4113 69 delete[] _name;
mbed_official 0:efe8172b4113 70 if (_from_construct) {
mbed_official 0:efe8172b4113 71 delete this;
mbed_official 0:efe8172b4113 72 }
mbed_official 0:efe8172b4113 73 }
mbed_official 0:efe8172b4113 74
mbed_official 0:efe8172b4113 75 void RPC::list_objs(Arguments *args, Reply *result) {
mbed_official 0:efe8172b4113 76 for (RPC *ptr = RPC::_head; ptr != NULL; ptr = ptr->_next) {
mbed_official 0:efe8172b4113 77 if (ptr->_from_construct) {
mbed_official 0:efe8172b4113 78 result->putData<const char*>(ptr->_name);
mbed_official 0:efe8172b4113 79 }
mbed_official 0:efe8172b4113 80 }
mbed_official 0:efe8172b4113 81 }
mbed_official 0:efe8172b4113 82
mbed_official 0:efe8172b4113 83 void RPC::clear(Arguments*, Reply*) {
mbed_official 0:efe8172b4113 84 RPC *ptr = RPC::_head;
mbed_official 0:efe8172b4113 85 while (ptr != NULL) {
mbed_official 0:efe8172b4113 86 RPC *tmp = ptr;
mbed_official 0:efe8172b4113 87 ptr = ptr->_next;
mbed_official 0:efe8172b4113 88 delete[] tmp->_name;
mbed_official 0:efe8172b4113 89 if (tmp->_from_construct) {
mbed_official 0:efe8172b4113 90 delete tmp;
mbed_official 0:efe8172b4113 91 }
mbed_official 0:efe8172b4113 92 }
mbed_official 0:efe8172b4113 93 }
mbed_official 0:efe8172b4113 94
mbed_official 0:efe8172b4113 95 const rpc_function RPC::_RPC_funcs[] = {
mbed_official 0:efe8172b4113 96 {"clear", &RPC::clear },
mbed_official 0:efe8172b4113 97 { "objects", &RPC::list_objs },
mbed_official 0:efe8172b4113 98 RPC_METHOD_END
mbed_official 0:efe8172b4113 99 };
mbed_official 0:efe8172b4113 100
mbed_official 0:efe8172b4113 101 rpc_class RPC::_RPC_class = { "RPC", _RPC_funcs, NULL };
mbed_official 0:efe8172b4113 102
mbed_official 0:efe8172b4113 103 RPC *RPC::_head = NULL;
mbed_official 0:efe8172b4113 104
mbed_official 0:efe8172b4113 105 rpc_class *RPC::_classes = &_RPC_class;
mbed_official 0:efe8172b4113 106
mbed_official 0:efe8172b4113 107 bool RPC::call(const char *request, char *reply) {
mbed_official 0:efe8172b4113 108 if (request == NULL) return false;
emilmont 1:6919289a5946 109
mbed_official 0:efe8172b4113 110 Arguments args(request);
mbed_official 0:efe8172b4113 111 Reply r(reply);
emilmont 1:6919289a5946 112
mbed_official 0:efe8172b4113 113 /* If there's no name print object and class names to result */
mbed_official 0:efe8172b4113 114 if (args.obj_name == NULL) {
mbed_official 0:efe8172b4113 115 for (RPC *p = RPC::_head; p != NULL; p = p->_next) {
mbed_official 0:efe8172b4113 116 r.putData<const char*>(p->_name);
mbed_official 0:efe8172b4113 117 }
mbed_official 0:efe8172b4113 118 for (rpc_class *c = RPC::_classes; c != NULL; c = c->next) {
mbed_official 0:efe8172b4113 119 r.putData<const char*>(c->name);
mbed_official 0:efe8172b4113 120 }
mbed_official 0:efe8172b4113 121 return true;
mbed_official 0:efe8172b4113 122 }
emilmont 1:6919289a5946 123
mbed_official 0:efe8172b4113 124 /* First try matching an instance */
mbed_official 0:efe8172b4113 125 RPC *p = lookup(args.obj_name);
mbed_official 0:efe8172b4113 126 if (p != NULL) {
mbed_official 0:efe8172b4113 127 /* Get the list of methods we support */
mbed_official 0:efe8172b4113 128 const rpc_method *cur_method = p->get_rpc_methods();
emilmont 1:6919289a5946 129
mbed_official 0:efe8172b4113 130 /* When there's no method print method names to result */
mbed_official 0:efe8172b4113 131 if (args.method_name == NULL) {
mbed_official 0:efe8172b4113 132 while (true) {
mbed_official 0:efe8172b4113 133 for (; cur_method->name != NULL; cur_method++) {
mbed_official 0:efe8172b4113 134 r.putData<const char*>(cur_method->name);
mbed_official 0:efe8172b4113 135 }
emilmont 1:6919289a5946 136
mbed_official 0:efe8172b4113 137 /* write_name_arr's args are references, so result and cur_method will have changed */
mbed_official 0:efe8172b4113 138 if (cur_method->super != 0) {
mbed_official 0:efe8172b4113 139 cur_method = cur_method->super(p);
mbed_official 0:efe8172b4113 140 } else {
mbed_official 0:efe8172b4113 141 return true;
mbed_official 0:efe8172b4113 142 }
mbed_official 0:efe8172b4113 143 }
mbed_official 0:efe8172b4113 144 }
emilmont 1:6919289a5946 145
mbed_official 0:efe8172b4113 146 /* Look through the methods for the one whose name matches */
mbed_official 0:efe8172b4113 147 while (true) {
mbed_official 0:efe8172b4113 148 for (; cur_method->name != NULL; cur_method++) {
mbed_official 0:efe8172b4113 149 if (strcmp(cur_method->name, args.method_name) == 0) {
mbed_official 0:efe8172b4113 150 (cur_method->method_caller)(p, &args, &r);
mbed_official 0:efe8172b4113 151 return true;
mbed_official 0:efe8172b4113 152 }
mbed_official 0:efe8172b4113 153 }
emilmont 1:6919289a5946 154
mbed_official 0:efe8172b4113 155 if (cur_method->super != 0) {
mbed_official 0:efe8172b4113 156 cur_method = cur_method->super(p);
mbed_official 0:efe8172b4113 157 } else {
mbed_official 0:efe8172b4113 158 /* end of methods and no match */
mbed_official 0:efe8172b4113 159 return false;
mbed_official 0:efe8172b4113 160 }
emilmont 1:6919289a5946 161
mbed_official 0:efe8172b4113 162 }
mbed_official 0:efe8172b4113 163 }
emilmont 1:6919289a5946 164
mbed_official 0:efe8172b4113 165 /* Then try a class */
mbed_official 0:efe8172b4113 166 for (const rpc_class *q = _classes; q != NULL; q = q->next) {
mbed_official 0:efe8172b4113 167 if (strcmp(q->name, args.obj_name) == 0) {
mbed_official 0:efe8172b4113 168 /* Matched the class name, so get its functions */
mbed_official 0:efe8172b4113 169 const rpc_function *cur_func = q->static_functions;
mbed_official 0:efe8172b4113 170 if (args.method_name == NULL) {
mbed_official 0:efe8172b4113 171 for (; cur_func->name != NULL; cur_func++) {
mbed_official 0:efe8172b4113 172 r.putData<const char*>(cur_func->name);
mbed_official 0:efe8172b4113 173 }
mbed_official 0:efe8172b4113 174 return true;
mbed_official 0:efe8172b4113 175 } else {
mbed_official 0:efe8172b4113 176 /* Otherwise call the appropriate function */
mbed_official 0:efe8172b4113 177 for (; cur_func->name != NULL; cur_func++) {
mbed_official 0:efe8172b4113 178 if (strcmp(cur_func->name, args.method_name) == 0) {
mbed_official 0:efe8172b4113 179 (cur_func->function_caller)(&args, &r);
mbed_official 0:efe8172b4113 180 return true;
mbed_official 0:efe8172b4113 181 }
mbed_official 0:efe8172b4113 182 }
mbed_official 0:efe8172b4113 183 return false;
mbed_official 0:efe8172b4113 184 }
mbed_official 0:efe8172b4113 185 }
mbed_official 0:efe8172b4113 186 }
emilmont 1:6919289a5946 187
mbed_official 0:efe8172b4113 188 return false;
mbed_official 0:efe8172b4113 189 }
mbed_official 0:efe8172b4113 190
mbed_official 0:efe8172b4113 191 } // namespace mbed