Doug Anson / mbedConnectorInterface

mbed Connector Endpoint interface. This interface permits a mbed endpoint to easily setup MDS resources and emit those resources to an MDS server.

Dependents:   IoT_LED_demo ServoTest uWater_Project hackathon ... more

api/InstancePointerTable.cpp@0:b438482ebbfc, 2015-01-27 (annotated)

Committer:
ansond
Date:
Tue Jan 27 22:23:51 2015 +0000
Revision:
0:b438482ebbfc
Child:
2:853f9ecc12df
initial check in

Who changed what in which revision?

UserRevisionLine numberNew contents of line
ansond 0:b438482ebbfc 1 /**
ansond 0:b438482ebbfc 2 * @file InstancePointerTable.h
ansond 0:b438482ebbfc 3 * @brief instance pointer table header
ansond 0:b438482ebbfc 4 * @author Doug Anson/Chris Paola
ansond 0:b438482ebbfc 5 * @version 1.0
ansond 0:b438482ebbfc 6 * @see
ansond 0:b438482ebbfc 7 *
ansond 0:b438482ebbfc 8 * Copyright (c) 2014
ansond 0:b438482ebbfc 9 *
ansond 0:b438482ebbfc 10 * Licensed under the Apache License, Version 2.0 (the "License");
ansond 0:b438482ebbfc 11 * you may not use this file except in compliance with the License.
ansond 0:b438482ebbfc 12 * You may obtain a copy of the License at
ansond 0:b438482ebbfc 13 *
ansond 0:b438482ebbfc 14 * http://www.apache.org/licenses/LICENSE-2.0
ansond 0:b438482ebbfc 15 *
ansond 0:b438482ebbfc 16 * Unless required by applicable law or agreed to in writing, software
ansond 0:b438482ebbfc 17 * distributed under the License is distributed on an "AS IS" BASIS,
ansond 0:b438482ebbfc 18 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
ansond 0:b438482ebbfc 19 * See the License for the specific language governing permissions and
ansond 0:b438482ebbfc 20 * limitations under the License.
ansond 0:b438482ebbfc 21 */
ansond 0:b438482ebbfc 22
ansond 0:b438482ebbfc 23 #include "InstancePointerTable.h"
ansond 0:b438482ebbfc 24
ansond 0:b438482ebbfc 25 // constructor
ansond 0:b438482ebbfc 26 InstancePointerTable::InstancePointerTable(const Logger *logger) {
ansond 0:b438482ebbfc 27 this->m_logger = (Logger *)logger;
ansond 0:b438482ebbfc 28 }
ansond 0:b438482ebbfc 29
ansond 0:b438482ebbfc 30 // destructor
ansond 0:b438482ebbfc 31 InstancePointerTable::~InstancePointerTable() {
ansond 0:b438482ebbfc 32 }
ansond 0:b438482ebbfc 33
ansond 0:b438482ebbfc 34 // add to the table
ansond 0:b438482ebbfc 35 void InstancePointerTable::add(string key,void *instance) {
ansond 0:b438482ebbfc 36 // get our index
ansond 0:b438482ebbfc 37 int index = this->indexFromKey(key);
ansond 0:b438482ebbfc 38 if (index >= 0) {
ansond 0:b438482ebbfc 39 // overwrite the existing reference we have...
ansond 0:b438482ebbfc 40 std::printf("InstancePointerTable: ADD(overwrite) instance: key[%s] index=%d\r\n",key.c_str(),index);
ansond 0:b438482ebbfc 41 this->m_instance_pointer_table[index].instance = instance;
ansond 0:b438482ebbfc 42 }
ansond 0:b438482ebbfc 43 else {
ansond 0:b438482ebbfc 44 // get the next empty slot
ansond 0:b438482ebbfc 45 index = this->nextEmptySlot();
ansond 0:b438482ebbfc 46 if (index >= 0) {
ansond 0:b438482ebbfc 47 // set the table entry
ansond 0:b438482ebbfc 48 this->m_instance_pointer_table[index].key = key;
ansond 0:b438482ebbfc 49 this->m_instance_pointer_table[index].instance = instance;
ansond 0:b438482ebbfc 50 std::printf("InstancePointerTable: ADD instance: key[%s] index=%d\r\n",key.c_str(),index);
ansond 0:b438482ebbfc 51 }
ansond 0:b438482ebbfc 52 else {
ansond 0:b438482ebbfc 53 // table is FULL! Error...
ansond 0:b438482ebbfc 54 std::printf("ERROR: InstancePointerTable is FULL... please expand table\r\n");
ansond 0:b438482ebbfc 55 }
ansond 0:b438482ebbfc 56 }
ansond 0:b438482ebbfc 57 }
ansond 0:b438482ebbfc 58
ansond 0:b438482ebbfc 59 // get from the table
ansond 0:b438482ebbfc 60 void *InstancePointerTable::get(string key) {
ansond 0:b438482ebbfc 61 // get our index
ansond 0:b438482ebbfc 62 int index = this->indexFromKey(key);
ansond 0:b438482ebbfc 63 if (index >= 0) {
ansond 0:b438482ebbfc 64 std::printf("InstancePointerTable: GET instance: key[%s] index=%d\r\n",key.c_str(),index);
ansond 0:b438482ebbfc 65 return this->m_instance_pointer_table[index].instance;
ansond 0:b438482ebbfc 66 }
ansond 0:b438482ebbfc 67 return NULL;
ansond 0:b438482ebbfc 68 }
ansond 0:b438482ebbfc 69
ansond 0:b438482ebbfc 70 // find next empty slot
ansond 0:b438482ebbfc 71 int InstancePointerTable::nextEmptySlot() { return this->indexFromKey(""); }
ansond 0:b438482ebbfc 72
ansond 0:b438482ebbfc 73 // lookup into the table
ansond 0:b438482ebbfc 74 int InstancePointerTable::indexFromKey(string key) {
ansond 0:b438482ebbfc 75 int index = -1;
ansond 0:b438482ebbfc 76 bool found = false;
ansond 0:b438482ebbfc 77
ansond 0:b438482ebbfc 78 for(int i=0;i<IPT_MAX_ENTRIES && !found;++i) {
ansond 0:b438482ebbfc 79 if (this->m_instance_pointer_table[i].key.compare(key) == 0) {
ansond 0:b438482ebbfc 80 found = true;
ansond 0:b438482ebbfc 81 index = i;
ansond 0:b438482ebbfc 82 }
ansond 0:b438482ebbfc 83 }
ansond 0:b438482ebbfc 84
ansond 0:b438482ebbfc 85 return index;
ansond 0:b438482ebbfc 86 }
ansond 0:b438482ebbfc 87
ansond 0:b438482ebbfc 88 // initialize
ansond 0:b438482ebbfc 89 void InstancePointerTable::init() {
ansond 0:b438482ebbfc 90 for(int i=0;i<IPT_MAX_ENTRIES;++i) {
ansond 0:b438482ebbfc 91 this->m_instance_pointer_table[i].key = "";
ansond 0:b438482ebbfc 92 this->m_instance_pointer_table[i].instance = NULL;
ansond 0:b438482ebbfc 93 }
ansond 0:b438482ebbfc 94 }
ansond 0:b438482ebbfc 95
ansond 0:b438482ebbfc 96 // set our logger
ansond 0:b438482ebbfc 97 void InstancePointerTable::setLogger(const Logger *logger) { this->m_logger = (Logger *)logger; }
ansond 0:b438482ebbfc 98
ansond 0:b438482ebbfc 99 // get our logger
ansond 0:b438482ebbfc 100 Logger *InstancePointerTable::logger() { return this->m_logger; }