RTC auf true
Diff: platform/FileBase.cpp
- Revision:
- 0:38ceb79fef03
diff -r 000000000000 -r 38ceb79fef03 platform/FileBase.cpp --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/platform/FileBase.cpp Wed Nov 28 15:10:15 2018 +0000 @@ -0,0 +1,129 @@ +/* mbed Microcontroller Library + * Copyright (c) 2006-2013 ARM Limited + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +#include <cstring> + +#include "platform/FileBase.h" +#include "platform/FileLike.h" +#include "platform/FileHandle.h" + +namespace mbed { + +FileBase *FileBase::_head = NULL; +SingletonPtr<PlatformMutex> FileBase::_mutex; +FileBase *FileBase::_default = NULL; + +FileBase::FileBase(const char *name, PathType t) : _next(NULL), + _name(name), + _path_type(t) +{ + _mutex->lock(); + if (name != NULL) { + // put this object at head of the list + _next = _head; + _head = this; + } else { + _next = NULL; + } + _mutex->unlock(); +} + +FileBase::~FileBase() +{ + _mutex->lock(); + if (_name != NULL) { + // remove this object from the list + if (_head == this) { // first in the list, so just drop me + _head = _next; + } else { // find the object before me, then drop me + FileBase *p = _head; + while (p->_next != this) { + p = p->_next; + } + p->_next = _next; + } + } + + if (_default == this) { + _default = NULL; + } + + _mutex->unlock(); + + if (getPathType() == FilePathType) { + extern void remove_filehandle(FileHandle *file); + remove_filehandle(static_cast<FileLike *>(this)); + } +} + +void FileBase::set_as_default() +{ + _mutex->lock(); + _default = this; + _mutex->unlock(); +} + +FileBase *FileBase::lookup(const char *name, unsigned int len) +{ + _mutex->lock(); + FileBase *p = _head; + while (p != NULL) { + /* Check that p->_name matches name and is the correct length */ + if (p->_name != NULL && len == std::strlen(p->_name) && std::memcmp(p->_name, name, len) == 0) { + _mutex->unlock(); + return p; + } + p = p->_next; + } + if (len == (sizeof "default") - 1 && std::memcmp("default", name, len) == 0) { + _mutex->unlock(); + return _default; + } + _mutex->unlock(); + return NULL; +} + +FileBase *FileBase::get(int n) +{ + _mutex->lock(); + FileBase *p = _head; + int m = 0; + while (p != NULL) { + if (m == n) { + _mutex->unlock(); + return p; + } + + m++; + p = p->_next; + } + _mutex->unlock(); + return NULL; +} + +const char *FileBase::getName(void) +{ + // Constant read so no lock needed + return _name; +} + +PathType FileBase::getPathType(void) +{ + // Constant read so no lock needed + return _path_type; +} + +} // namespace mbed +