Knight KE / Mbed OS Game_Master

游戏王对战板，目前code还是空的

mbed-os/platform/FileBase.cpp@0:9b3d4731edbb, 2018-06-21 (annotated)

Committer:
WFKnight
Date:
Thu Jun 21 13:51:43 2018 +0000
Revision:
0:9b3d4731edbb
UART, RTOS, LED

Who changed what in which revision?

UserRevisionLine numberNew contents of line
WFKnight 0:9b3d4731edbb 1 /* mbed Microcontroller Library
WFKnight 0:9b3d4731edbb 2 * Copyright (c) 2006-2013 ARM Limited
WFKnight 0:9b3d4731edbb 3 *
WFKnight 0:9b3d4731edbb 4 * Licensed under the Apache License, Version 2.0 (the "License");
WFKnight 0:9b3d4731edbb 5 * you may not use this file except in compliance with the License.
WFKnight 0:9b3d4731edbb 6 * You may obtain a copy of the License at
WFKnight 0:9b3d4731edbb 7 *
WFKnight 0:9b3d4731edbb 8 * http://www.apache.org/licenses/LICENSE-2.0
WFKnight 0:9b3d4731edbb 9 *
WFKnight 0:9b3d4731edbb 10 * Unless required by applicable law or agreed to in writing, software
WFKnight 0:9b3d4731edbb 11 * distributed under the License is distributed on an "AS IS" BASIS,
WFKnight 0:9b3d4731edbb 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
WFKnight 0:9b3d4731edbb 13 * See the License for the specific language governing permissions and
WFKnight 0:9b3d4731edbb 14 * limitations under the License.
WFKnight 0:9b3d4731edbb 15 */
WFKnight 0:9b3d4731edbb 16 #include "platform/FileBase.h"
WFKnight 0:9b3d4731edbb 17 #include "platform/FileLike.h"
WFKnight 0:9b3d4731edbb 18 #include "platform/FileHandle.h"
WFKnight 0:9b3d4731edbb 19
WFKnight 0:9b3d4731edbb 20 namespace mbed {
WFKnight 0:9b3d4731edbb 21
WFKnight 0:9b3d4731edbb 22 FileBase *FileBase::_head = NULL;
WFKnight 0:9b3d4731edbb 23 SingletonPtr<PlatformMutex> FileBase::_mutex;
WFKnight 0:9b3d4731edbb 24
WFKnight 0:9b3d4731edbb 25 FileBase::FileBase(const char *name, PathType t) : _next(NULL),
WFKnight 0:9b3d4731edbb 26 _name(name),
WFKnight 0:9b3d4731edbb 27 _path_type(t) {
WFKnight 0:9b3d4731edbb 28 _mutex->lock();
WFKnight 0:9b3d4731edbb 29 if (name != NULL) {
WFKnight 0:9b3d4731edbb 30 // put this object at head of the list
WFKnight 0:9b3d4731edbb 31 _next = _head;
WFKnight 0:9b3d4731edbb 32 _head = this;
WFKnight 0:9b3d4731edbb 33 } else {
WFKnight 0:9b3d4731edbb 34 _next = NULL;
WFKnight 0:9b3d4731edbb 35 }
WFKnight 0:9b3d4731edbb 36 _mutex->unlock();
WFKnight 0:9b3d4731edbb 37 }
WFKnight 0:9b3d4731edbb 38
WFKnight 0:9b3d4731edbb 39 FileBase::~FileBase() {
WFKnight 0:9b3d4731edbb 40 _mutex->lock();
WFKnight 0:9b3d4731edbb 41 if (_name != NULL) {
WFKnight 0:9b3d4731edbb 42 // remove this object from the list
WFKnight 0:9b3d4731edbb 43 if (_head == this) { // first in the list, so just drop me
WFKnight 0:9b3d4731edbb 44 _head = _next;
WFKnight 0:9b3d4731edbb 45 } else { // find the object before me, then drop me
WFKnight 0:9b3d4731edbb 46 FileBase *p = _head;
WFKnight 0:9b3d4731edbb 47 while (p->_next != this) {
WFKnight 0:9b3d4731edbb 48 p = p->_next;
WFKnight 0:9b3d4731edbb 49 }
WFKnight 0:9b3d4731edbb 50 p->_next = _next;
WFKnight 0:9b3d4731edbb 51 }
WFKnight 0:9b3d4731edbb 52 }
WFKnight 0:9b3d4731edbb 53 _mutex->unlock();
WFKnight 0:9b3d4731edbb 54
WFKnight 0:9b3d4731edbb 55 if (getPathType() == FilePathType) {
WFKnight 0:9b3d4731edbb 56 extern void remove_filehandle(FileHandle *file);
WFKnight 0:9b3d4731edbb 57 remove_filehandle(static_cast<FileHandle*>(static_cast<FileLike*>(this)));
WFKnight 0:9b3d4731edbb 58 }
WFKnight 0:9b3d4731edbb 59 }
WFKnight 0:9b3d4731edbb 60
WFKnight 0:9b3d4731edbb 61 FileBase *FileBase::lookup(const char *name, unsigned int len) {
WFKnight 0:9b3d4731edbb 62 _mutex->lock();
WFKnight 0:9b3d4731edbb 63 FileBase *p = _head;
WFKnight 0:9b3d4731edbb 64 while (p != NULL) {
WFKnight 0:9b3d4731edbb 65 /* Check that p->_name matches name and is the correct length */
WFKnight 0:9b3d4731edbb 66 if (p->_name != NULL && std::strncmp(p->_name, name, len) == 0 && std::strlen(p->_name) == len) {
WFKnight 0:9b3d4731edbb 67 _mutex->unlock();
WFKnight 0:9b3d4731edbb 68 return p;
WFKnight 0:9b3d4731edbb 69 }
WFKnight 0:9b3d4731edbb 70 p = p->_next;
WFKnight 0:9b3d4731edbb 71 }
WFKnight 0:9b3d4731edbb 72 _mutex->unlock();
WFKnight 0:9b3d4731edbb 73 return NULL;
WFKnight 0:9b3d4731edbb 74 }
WFKnight 0:9b3d4731edbb 75
WFKnight 0:9b3d4731edbb 76 FileBase *FileBase::get(int n) {
WFKnight 0:9b3d4731edbb 77 _mutex->lock();
WFKnight 0:9b3d4731edbb 78 FileBase *p = _head;
WFKnight 0:9b3d4731edbb 79 int m = 0;
WFKnight 0:9b3d4731edbb 80 while (p != NULL) {
WFKnight 0:9b3d4731edbb 81 if (m == n) {
WFKnight 0:9b3d4731edbb 82 _mutex->unlock();
WFKnight 0:9b3d4731edbb 83 return p;
WFKnight 0:9b3d4731edbb 84 }
WFKnight 0:9b3d4731edbb 85
WFKnight 0:9b3d4731edbb 86 m++;
WFKnight 0:9b3d4731edbb 87 p = p->_next;
WFKnight 0:9b3d4731edbb 88 }
WFKnight 0:9b3d4731edbb 89 _mutex->unlock();
WFKnight 0:9b3d4731edbb 90 return NULL;
WFKnight 0:9b3d4731edbb 91 }
WFKnight 0:9b3d4731edbb 92
WFKnight 0:9b3d4731edbb 93 const char* FileBase::getName(void) {
WFKnight 0:9b3d4731edbb 94 // Constant read so no lock needed
WFKnight 0:9b3d4731edbb 95 return _name;
WFKnight 0:9b3d4731edbb 96 }
WFKnight 0:9b3d4731edbb 97
WFKnight 0:9b3d4731edbb 98 PathType FileBase::getPathType(void) {
WFKnight 0:9b3d4731edbb 99 // Constant read so no lock needed
WFKnight 0:9b3d4731edbb 100 return _path_type;
WFKnight 0:9b3d4731edbb 101 }
WFKnight 0:9b3d4731edbb 102
WFKnight 0:9b3d4731edbb 103 } // namespace mbed
WFKnight 0:9b3d4731edbb 104