mbed official / mbed-dev

mbed library sources. Supersedes mbed-src.

Dependents:   Nucleo_Hello_Encoder BLE_iBeaconScan AM1805_DEMO DISCO-F429ZI_ExportTemplate1 ... more

platform/FileBase.cpp@181:57724642e740, 2018-02-16 (annotated)

Committer:
AnnaBridge
Date:
Fri Feb 16 16:09:33 2018 +0000
Revision:
181:57724642e740
Parent:
167:e84263d55307
Child:
187:0387e8f68319
mbed-dev library. Release version 159.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
AnnaBridge 167:e84263d55307 1 /* mbed Microcontroller Library
AnnaBridge 167:e84263d55307 2 * Copyright (c) 2006-2013 ARM Limited
AnnaBridge 167:e84263d55307 3 *
AnnaBridge 167:e84263d55307 4 * Licensed under the Apache License, Version 2.0 (the "License");
AnnaBridge 167:e84263d55307 5 * you may not use this file except in compliance with the License.
AnnaBridge 167:e84263d55307 6 * You may obtain a copy of the License at
AnnaBridge 167:e84263d55307 7 *
AnnaBridge 167:e84263d55307 8 * http://www.apache.org/licenses/LICENSE-2.0
AnnaBridge 167:e84263d55307 9 *
AnnaBridge 167:e84263d55307 10 * Unless required by applicable law or agreed to in writing, software
AnnaBridge 167:e84263d55307 11 * distributed under the License is distributed on an "AS IS" BASIS,
AnnaBridge 167:e84263d55307 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
AnnaBridge 167:e84263d55307 13 * See the License for the specific language governing permissions and
AnnaBridge 167:e84263d55307 14 * limitations under the License.
AnnaBridge 167:e84263d55307 15 */
AnnaBridge 167:e84263d55307 16 #include "platform/FileBase.h"
AnnaBridge 167:e84263d55307 17 #include "platform/FileLike.h"
AnnaBridge 167:e84263d55307 18 #include "platform/FileHandle.h"
AnnaBridge 167:e84263d55307 19
AnnaBridge 167:e84263d55307 20 namespace mbed {
AnnaBridge 167:e84263d55307 21
AnnaBridge 167:e84263d55307 22 FileBase *FileBase::_head = NULL;
AnnaBridge 167:e84263d55307 23 SingletonPtr<PlatformMutex> FileBase::_mutex;
AnnaBridge 167:e84263d55307 24
AnnaBridge 167:e84263d55307 25 FileBase::FileBase(const char *name, PathType t) : _next(NULL),
AnnaBridge 167:e84263d55307 26 _name(name),
AnnaBridge 167:e84263d55307 27 _path_type(t) {
AnnaBridge 167:e84263d55307 28 _mutex->lock();
AnnaBridge 167:e84263d55307 29 if (name != NULL) {
AnnaBridge 167:e84263d55307 30 // put this object at head of the list
AnnaBridge 167:e84263d55307 31 _next = _head;
AnnaBridge 167:e84263d55307 32 _head = this;
AnnaBridge 167:e84263d55307 33 } else {
AnnaBridge 167:e84263d55307 34 _next = NULL;
AnnaBridge 167:e84263d55307 35 }
AnnaBridge 167:e84263d55307 36 _mutex->unlock();
AnnaBridge 167:e84263d55307 37 }
AnnaBridge 167:e84263d55307 38
AnnaBridge 167:e84263d55307 39 FileBase::~FileBase() {
AnnaBridge 167:e84263d55307 40 _mutex->lock();
AnnaBridge 167:e84263d55307 41 if (_name != NULL) {
AnnaBridge 167:e84263d55307 42 // remove this object from the list
AnnaBridge 167:e84263d55307 43 if (_head == this) { // first in the list, so just drop me
AnnaBridge 167:e84263d55307 44 _head = _next;
AnnaBridge 167:e84263d55307 45 } else { // find the object before me, then drop me
AnnaBridge 167:e84263d55307 46 FileBase *p = _head;
AnnaBridge 167:e84263d55307 47 while (p->_next != this) {
AnnaBridge 167:e84263d55307 48 p = p->_next;
AnnaBridge 167:e84263d55307 49 }
AnnaBridge 167:e84263d55307 50 p->_next = _next;
AnnaBridge 167:e84263d55307 51 }
AnnaBridge 167:e84263d55307 52 }
AnnaBridge 167:e84263d55307 53 _mutex->unlock();
AnnaBridge 167:e84263d55307 54
AnnaBridge 167:e84263d55307 55 if (getPathType() == FilePathType) {
AnnaBridge 167:e84263d55307 56 extern void remove_filehandle(FileHandle *file);
AnnaBridge 167:e84263d55307 57 remove_filehandle(static_cast<FileHandle*>(static_cast<FileLike*>(this)));
AnnaBridge 167:e84263d55307 58 }
AnnaBridge 167:e84263d55307 59 }
AnnaBridge 167:e84263d55307 60
AnnaBridge 167:e84263d55307 61 FileBase *FileBase::lookup(const char *name, unsigned int len) {
AnnaBridge 167:e84263d55307 62 _mutex->lock();
AnnaBridge 167:e84263d55307 63 FileBase *p = _head;
AnnaBridge 167:e84263d55307 64 while (p != NULL) {
AnnaBridge 167:e84263d55307 65 /* Check that p->_name matches name and is the correct length */
AnnaBridge 167:e84263d55307 66 if (p->_name != NULL && std::strncmp(p->_name, name, len) == 0 && std::strlen(p->_name) == len) {
AnnaBridge 167:e84263d55307 67 _mutex->unlock();
AnnaBridge 167:e84263d55307 68 return p;
AnnaBridge 167:e84263d55307 69 }
AnnaBridge 167:e84263d55307 70 p = p->_next;
AnnaBridge 167:e84263d55307 71 }
AnnaBridge 167:e84263d55307 72 _mutex->unlock();
AnnaBridge 167:e84263d55307 73 return NULL;
AnnaBridge 167:e84263d55307 74 }
AnnaBridge 167:e84263d55307 75
AnnaBridge 167:e84263d55307 76 FileBase *FileBase::get(int n) {
AnnaBridge 167:e84263d55307 77 _mutex->lock();
AnnaBridge 167:e84263d55307 78 FileBase *p = _head;
AnnaBridge 167:e84263d55307 79 int m = 0;
AnnaBridge 167:e84263d55307 80 while (p != NULL) {
AnnaBridge 167:e84263d55307 81 if (m == n) {
AnnaBridge 167:e84263d55307 82 _mutex->unlock();
AnnaBridge 167:e84263d55307 83 return p;
AnnaBridge 167:e84263d55307 84 }
AnnaBridge 167:e84263d55307 85
AnnaBridge 167:e84263d55307 86 m++;
AnnaBridge 167:e84263d55307 87 p = p->_next;
AnnaBridge 167:e84263d55307 88 }
AnnaBridge 167:e84263d55307 89 _mutex->unlock();
AnnaBridge 167:e84263d55307 90 return NULL;
AnnaBridge 167:e84263d55307 91 }
AnnaBridge 167:e84263d55307 92
AnnaBridge 167:e84263d55307 93 const char* FileBase::getName(void) {
AnnaBridge 167:e84263d55307 94 // Constant read so no lock needed
AnnaBridge 167:e84263d55307 95 return _name;
AnnaBridge 167:e84263d55307 96 }
AnnaBridge 167:e84263d55307 97
AnnaBridge 167:e84263d55307 98 PathType FileBase::getPathType(void) {
AnnaBridge 167:e84263d55307 99 // Constant read so no lock needed
AnnaBridge 167:e84263d55307 100 return _path_type;
AnnaBridge 167:e84263d55307 101 }
AnnaBridge 167:e84263d55307 102
AnnaBridge 167:e84263d55307 103 } // namespace mbed
AnnaBridge 167:e84263d55307 104