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rpc.cpp@12:ac3570c18083, 2016-02-19 (annotated)
- Committer:
- dll7
- Date:
- Fri Feb 19 20:37:14 2016 +0000
- Revision:
- 12:ac3570c18083
- Parent:
- 1:6919289a5946
- Child:
- 9:d8113058854e
STM32
Who changed what in which revision?
User | Revision | Line number | New 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 |