From Ben Katz mbed-dev library. Removed unnecessary target files to reduce the overall size by a factor of 10 to make it easier to import into the online IDE.
Dependents: motor_driver motor_driver_screaming_fix
Diff: platform/FileBase.cpp
- Revision:
- 0:083111ae2a11
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/platform/FileBase.cpp Thu Nov 26 04:08:56 2020 +0000 @@ -0,0 +1,104 @@ +/* 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 "platform/FileBase.h" +#include "platform/FileLike.h" +#include "platform/FileHandle.h" + +namespace mbed { + +FileBase *FileBase::_head = NULL; +SingletonPtr<PlatformMutex> FileBase::_mutex; + +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; + } + } + _mutex->unlock(); + + if (getPathType() == FilePathType) { + extern void remove_filehandle(FileHandle *file); + remove_filehandle(static_cast<FileHandle*>(static_cast<FileLike*>(this))); + } +} + +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 && std::strncmp(p->_name, name, len) == 0 && std::strlen(p->_name) == len) { + _mutex->unlock(); + return p; + } + p = p->_next; + } + _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 +