Thor Hall / mbed-dev_mbed_lib_v125

This fork captures the mbed lib v125 for ease of integration into older projects.

Fork of mbed-dev by mbed official

common/FileBase.cpp@187:92cbb9eec47b, 2018-07-20 (annotated)

Committer:
apluscw
Date:
Fri Jul 20 21:24:42 2018 +0000
Revision:
187:92cbb9eec47b
Mbed library with source code from mbed lib v125. Posted to ease integration with some older projects.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
apluscw 187:92cbb9eec47b 1 /* mbed Microcontroller Library
apluscw 187:92cbb9eec47b 2 * Copyright (c) 2006-2013 ARM Limited
apluscw 187:92cbb9eec47b 3 *
apluscw 187:92cbb9eec47b 4 * Licensed under the Apache License, Version 2.0 (the "License");
apluscw 187:92cbb9eec47b 5 * you may not use this file except in compliance with the License.
apluscw 187:92cbb9eec47b 6 * You may obtain a copy of the License at
apluscw 187:92cbb9eec47b 7 *
apluscw 187:92cbb9eec47b 8 * http://www.apache.org/licenses/LICENSE-2.0
apluscw 187:92cbb9eec47b 9 *
apluscw 187:92cbb9eec47b 10 * Unless required by applicable law or agreed to in writing, software
apluscw 187:92cbb9eec47b 11 * distributed under the License is distributed on an "AS IS" BASIS,
apluscw 187:92cbb9eec47b 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
apluscw 187:92cbb9eec47b 13 * See the License for the specific language governing permissions and
apluscw 187:92cbb9eec47b 14 * limitations under the License.
apluscw 187:92cbb9eec47b 15 */
apluscw 187:92cbb9eec47b 16 #include "FileBase.h"
apluscw 187:92cbb9eec47b 17
apluscw 187:92cbb9eec47b 18 namespace mbed {
apluscw 187:92cbb9eec47b 19
apluscw 187:92cbb9eec47b 20 FileBase *FileBase::_head = NULL;
apluscw 187:92cbb9eec47b 21 SingletonPtr<PlatformMutex> FileBase::_mutex;
apluscw 187:92cbb9eec47b 22
apluscw 187:92cbb9eec47b 23 FileBase::FileBase(const char *name, PathType t) : _next(NULL),
apluscw 187:92cbb9eec47b 24 _name(name),
apluscw 187:92cbb9eec47b 25 _path_type(t) {
apluscw 187:92cbb9eec47b 26 _mutex->lock();
apluscw 187:92cbb9eec47b 27 if (name != NULL) {
apluscw 187:92cbb9eec47b 28 // put this object at head of the list
apluscw 187:92cbb9eec47b 29 _next = _head;
apluscw 187:92cbb9eec47b 30 _head = this;
apluscw 187:92cbb9eec47b 31 } else {
apluscw 187:92cbb9eec47b 32 _next = NULL;
apluscw 187:92cbb9eec47b 33 }
apluscw 187:92cbb9eec47b 34 _mutex->unlock();
apluscw 187:92cbb9eec47b 35 }
apluscw 187:92cbb9eec47b 36
apluscw 187:92cbb9eec47b 37 FileBase::~FileBase() {
apluscw 187:92cbb9eec47b 38 _mutex->lock();
apluscw 187:92cbb9eec47b 39 if (_name != NULL) {
apluscw 187:92cbb9eec47b 40 // remove this object from the list
apluscw 187:92cbb9eec47b 41 if (_head == this) { // first in the list, so just drop me
apluscw 187:92cbb9eec47b 42 _head = _next;
apluscw 187:92cbb9eec47b 43 } else { // find the object before me, then drop me
apluscw 187:92cbb9eec47b 44 FileBase *p = _head;
apluscw 187:92cbb9eec47b 45 while (p->_next != this) {
apluscw 187:92cbb9eec47b 46 p = p->_next;
apluscw 187:92cbb9eec47b 47 }
apluscw 187:92cbb9eec47b 48 p->_next = _next;
apluscw 187:92cbb9eec47b 49 }
apluscw 187:92cbb9eec47b 50 }
apluscw 187:92cbb9eec47b 51 _mutex->unlock();
apluscw 187:92cbb9eec47b 52 }
apluscw 187:92cbb9eec47b 53
apluscw 187:92cbb9eec47b 54 FileBase *FileBase::lookup(const char *name, unsigned int len) {
apluscw 187:92cbb9eec47b 55 _mutex->lock();
apluscw 187:92cbb9eec47b 56 FileBase *p = _head;
apluscw 187:92cbb9eec47b 57 while (p != NULL) {
apluscw 187:92cbb9eec47b 58 /* Check that p->_name matches name and is the correct length */
apluscw 187:92cbb9eec47b 59 if (p->_name != NULL && std::strncmp(p->_name, name, len) == 0 && std::strlen(p->_name) == len) {
apluscw 187:92cbb9eec47b 60 _mutex->unlock();
apluscw 187:92cbb9eec47b 61 return p;
apluscw 187:92cbb9eec47b 62 }
apluscw 187:92cbb9eec47b 63 p = p->_next;
apluscw 187:92cbb9eec47b 64 }
apluscw 187:92cbb9eec47b 65 _mutex->unlock();
apluscw 187:92cbb9eec47b 66 return NULL;
apluscw 187:92cbb9eec47b 67 }
apluscw 187:92cbb9eec47b 68
apluscw 187:92cbb9eec47b 69 FileBase *FileBase::get(int n) {
apluscw 187:92cbb9eec47b 70 _mutex->lock();
apluscw 187:92cbb9eec47b 71 FileBase *p = _head;
apluscw 187:92cbb9eec47b 72 int m = 0;
apluscw 187:92cbb9eec47b 73 while (p != NULL) {
apluscw 187:92cbb9eec47b 74 if (m == n) {
apluscw 187:92cbb9eec47b 75 _mutex->unlock();
apluscw 187:92cbb9eec47b 76 return p;
apluscw 187:92cbb9eec47b 77 }
apluscw 187:92cbb9eec47b 78
apluscw 187:92cbb9eec47b 79 m++;
apluscw 187:92cbb9eec47b 80 p = p->_next;
apluscw 187:92cbb9eec47b 81 }
apluscw 187:92cbb9eec47b 82 _mutex->unlock();
apluscw 187:92cbb9eec47b 83 return NULL;
apluscw 187:92cbb9eec47b 84 }
apluscw 187:92cbb9eec47b 85
apluscw 187:92cbb9eec47b 86 const char* FileBase::getName(void) {
apluscw 187:92cbb9eec47b 87 // Constant read so no lock needed
apluscw 187:92cbb9eec47b 88 return _name;
apluscw 187:92cbb9eec47b 89 }
apluscw 187:92cbb9eec47b 90
apluscw 187:92cbb9eec47b 91 PathType FileBase::getPathType(void) {
apluscw 187:92cbb9eec47b 92 // Constant read so no lock needed
apluscw 187:92cbb9eec47b 93 return _path_type;
apluscw 187:92cbb9eec47b 94 }
apluscw 187:92cbb9eec47b 95
apluscw 187:92cbb9eec47b 96 } // namespace mbed
apluscw 187:92cbb9eec47b 97