Vipin Ranka / MGAS_GR_Peach

This is the final version of Mini Gateway for Automation and Security desgined for Renesas GR Peach Design Contest

Dependencies:   GR-PEACH_video GraphicsFramework HTTPServer R_BSP mbed-rpc mbed-rtos Socket lwip-eth lwip-sys lwip FATFileSystem

Fork of mbed-os-example-mbed5-blinky by mbed-os-examples

mbed-dev/drivers/FileBase.cpp@12:9a20164dcc47, 2017-01-11 (annotated)

Committer:
vipinranka
Date:
Wed Jan 11 11:41:30 2017 +0000
Revision:
12:9a20164dcc47
This is the final version MGAS Project for Renesas GR Peach Design Contest

Who changed what in which revision?

UserRevisionLine numberNew contents of line
vipinranka 12:9a20164dcc47 1 /* mbed Microcontroller Library
vipinranka 12:9a20164dcc47 2 * Copyright (c) 2006-2013 ARM Limited
vipinranka 12:9a20164dcc47 3 *
vipinranka 12:9a20164dcc47 4 * Licensed under the Apache License, Version 2.0 (the "License");
vipinranka 12:9a20164dcc47 5 * you may not use this file except in compliance with the License.
vipinranka 12:9a20164dcc47 6 * You may obtain a copy of the License at
vipinranka 12:9a20164dcc47 7 *
vipinranka 12:9a20164dcc47 8 * http://www.apache.org/licenses/LICENSE-2.0
vipinranka 12:9a20164dcc47 9 *
vipinranka 12:9a20164dcc47 10 * Unless required by applicable law or agreed to in writing, software
vipinranka 12:9a20164dcc47 11 * distributed under the License is distributed on an "AS IS" BASIS,
vipinranka 12:9a20164dcc47 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
vipinranka 12:9a20164dcc47 13 * See the License for the specific language governing permissions and
vipinranka 12:9a20164dcc47 14 * limitations under the License.
vipinranka 12:9a20164dcc47 15 */
vipinranka 12:9a20164dcc47 16 #include "drivers/FileBase.h"
vipinranka 12:9a20164dcc47 17
vipinranka 12:9a20164dcc47 18 namespace mbed {
vipinranka 12:9a20164dcc47 19
vipinranka 12:9a20164dcc47 20 FileBase *FileBase::_head = NULL;
vipinranka 12:9a20164dcc47 21 SingletonPtr<PlatformMutex> FileBase::_mutex;
vipinranka 12:9a20164dcc47 22
vipinranka 12:9a20164dcc47 23 FileBase::FileBase(const char *name, PathType t) : _next(NULL),
vipinranka 12:9a20164dcc47 24 _name(name),
vipinranka 12:9a20164dcc47 25 _path_type(t) {
vipinranka 12:9a20164dcc47 26 _mutex->lock();
vipinranka 12:9a20164dcc47 27 if (name != NULL) {
vipinranka 12:9a20164dcc47 28 // put this object at head of the list
vipinranka 12:9a20164dcc47 29 _next = _head;
vipinranka 12:9a20164dcc47 30 _head = this;
vipinranka 12:9a20164dcc47 31 } else {
vipinranka 12:9a20164dcc47 32 _next = NULL;
vipinranka 12:9a20164dcc47 33 }
vipinranka 12:9a20164dcc47 34 _mutex->unlock();
vipinranka 12:9a20164dcc47 35 }
vipinranka 12:9a20164dcc47 36
vipinranka 12:9a20164dcc47 37 FileBase::~FileBase() {
vipinranka 12:9a20164dcc47 38 _mutex->lock();
vipinranka 12:9a20164dcc47 39 if (_name != NULL) {
vipinranka 12:9a20164dcc47 40 // remove this object from the list
vipinranka 12:9a20164dcc47 41 if (_head == this) { // first in the list, so just drop me
vipinranka 12:9a20164dcc47 42 _head = _next;
vipinranka 12:9a20164dcc47 43 } else { // find the object before me, then drop me
vipinranka 12:9a20164dcc47 44 FileBase *p = _head;
vipinranka 12:9a20164dcc47 45 while (p->_next != this) {
vipinranka 12:9a20164dcc47 46 p = p->_next;
vipinranka 12:9a20164dcc47 47 }
vipinranka 12:9a20164dcc47 48 p->_next = _next;
vipinranka 12:9a20164dcc47 49 }
vipinranka 12:9a20164dcc47 50 }
vipinranka 12:9a20164dcc47 51 _mutex->unlock();
vipinranka 12:9a20164dcc47 52 }
vipinranka 12:9a20164dcc47 53
vipinranka 12:9a20164dcc47 54 FileBase *FileBase::lookup(const char *name, unsigned int len) {
vipinranka 12:9a20164dcc47 55 _mutex->lock();
vipinranka 12:9a20164dcc47 56 FileBase *p = _head;
vipinranka 12:9a20164dcc47 57 while (p != NULL) {
vipinranka 12:9a20164dcc47 58 /* Check that p->_name matches name and is the correct length */
vipinranka 12:9a20164dcc47 59 if (p->_name != NULL && std::strncmp(p->_name, name, len) == 0 && std::strlen(p->_name) == len) {
vipinranka 12:9a20164dcc47 60 _mutex->unlock();
vipinranka 12:9a20164dcc47 61 return p;
vipinranka 12:9a20164dcc47 62 }
vipinranka 12:9a20164dcc47 63 p = p->_next;
vipinranka 12:9a20164dcc47 64 }
vipinranka 12:9a20164dcc47 65 _mutex->unlock();
vipinranka 12:9a20164dcc47 66 return NULL;
vipinranka 12:9a20164dcc47 67 }
vipinranka 12:9a20164dcc47 68
vipinranka 12:9a20164dcc47 69 FileBase *FileBase::get(int n) {
vipinranka 12:9a20164dcc47 70 _mutex->lock();
vipinranka 12:9a20164dcc47 71 FileBase *p = _head;
vipinranka 12:9a20164dcc47 72 int m = 0;
vipinranka 12:9a20164dcc47 73 while (p != NULL) {
vipinranka 12:9a20164dcc47 74 if (m == n) {
vipinranka 12:9a20164dcc47 75 _mutex->unlock();
vipinranka 12:9a20164dcc47 76 return p;
vipinranka 12:9a20164dcc47 77 }
vipinranka 12:9a20164dcc47 78
vipinranka 12:9a20164dcc47 79 m++;
vipinranka 12:9a20164dcc47 80 p = p->_next;
vipinranka 12:9a20164dcc47 81 }
vipinranka 12:9a20164dcc47 82 _mutex->unlock();
vipinranka 12:9a20164dcc47 83 return NULL;
vipinranka 12:9a20164dcc47 84 }
vipinranka 12:9a20164dcc47 85
vipinranka 12:9a20164dcc47 86 const char* FileBase::getName(void) {
vipinranka 12:9a20164dcc47 87 // Constant read so no lock needed
vipinranka 12:9a20164dcc47 88 return _name;
vipinranka 12:9a20164dcc47 89 }
vipinranka 12:9a20164dcc47 90
vipinranka 12:9a20164dcc47 91 PathType FileBase::getPathType(void) {
vipinranka 12:9a20164dcc47 92 // Constant read so no lock needed
vipinranka 12:9a20164dcc47 93 return _path_type;
vipinranka 12:9a20164dcc47 94 }
vipinranka 12:9a20164dcc47 95
vipinranka 12:9a20164dcc47 96 } // namespace mbed
vipinranka 12:9a20164dcc47 97