| #ifndef _PRAGMA_COPYRIGHT_ |
| #define _PRAGMA_COPYRIGHT_ |
| #pragma comment(copyright, "%Z% %I% %W% %D% %T%\0") |
| #endif /* _PRAGMA_COPYRIGHT_ */ |
| /**************************************************************************** |
| |
| * Copyright (c) 2008, 2010 IBM Corporation. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0s |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| |
| Classes: FilterList |
| |
| Description: Filter management (Note: STL does not guarantee the safety of |
| several readers & one writer cowork together, and user threads |
| can query filter information at runtime, so it's necessary |
| to add a lock to protect these read & write operations). |
| |
| Author: Nicole Nie |
| |
| History: |
| Date Who ID Description |
| -------- --- --- ----------- |
| 05/24/08 nieyy Initial code (F156654) |
| |
| ****************************************************************************/ |
| |
| #include "filterlist.hpp" |
| #include <assert.h> |
| |
| #include "filter.hpp" |
| |
| FilterList* FilterList::instance = NULL; |
| FilterList * FilterList::getInstance() |
| { |
| if (instance == NULL) { |
| instance = new FilterList(); |
| } |
| return instance; |
| } |
| |
| FilterList::FilterList() |
| { |
| filterInfo.clear(); |
| |
| ::pthread_mutex_init(&mtx, NULL); |
| } |
| |
| FilterList::~FilterList() |
| { |
| // delete all loaded filters |
| FILTER_MAP::iterator fit = filterInfo.begin(); |
| for (; fit != filterInfo.end(); fit++) { |
| delete (*fit).second; |
| } |
| filterInfo.clear(); |
| |
| ::pthread_mutex_destroy(&mtx); |
| |
| instance = NULL; |
| } |
| |
| int FilterList::loadFilter(int filter_id, Filter * filter, bool invoke) |
| { |
| int rc = SCI_SUCCESS; |
| if (invoke) { |
| // call init func |
| rc = filter->load(); |
| } |
| |
| if (rc == SCI_SUCCESS) { |
| lock(); |
| filterInfo[filter_id] = filter; |
| unlock(); |
| } |
| |
| return rc; |
| } |
| |
| Filter * FilterList::getFilter(int filter_id) |
| { |
| Filter *filter = NULL; |
| |
| lock(); |
| FILTER_MAP::iterator fit = filterInfo.find(filter_id); |
| if (fit != filterInfo.end()) { |
| filter = (*fit).second; |
| } |
| unlock(); |
| |
| return filter; |
| } |
| |
| int FilterList::unloadFilter(int filter_id, bool invoke) |
| { |
| Filter *filter = NULL; |
| |
| lock(); |
| FILTER_MAP::iterator fit = filterInfo.find(filter_id); |
| if (fit != filterInfo.end()) { |
| filter = (*fit).second; |
| } else { |
| unlock(); |
| return SCI_ERR_FILTER_NOTFOUND; |
| } |
| |
| filterInfo.erase(filter_id); |
| unlock(); |
| |
| int rc = SCI_SUCCESS; |
| if (invoke) { |
| // call term_func |
| rc = filter->unload(); |
| } |
| delete filter; |
| |
| return rc; |
| } |
| |
| int FilterList::numOfFilters() |
| { |
| int size; |
| |
| lock(); |
| size = filterInfo.size(); |
| unlock(); |
| |
| return size; |
| } |
| |
| void FilterList::retrieveFilterList(int * ret_val) |
| { |
| int i = 0; |
| |
| lock(); |
| FILTER_MAP::iterator it = filterInfo.begin(); |
| for (; it!=filterInfo.end(); ++it) { |
| ret_val[i++] = (*it).first; |
| } |
| unlock(); |
| } |
| |
| void FilterList::lock() |
| { |
| ::pthread_mutex_lock(&mtx); |
| } |
| |
| void FilterList::unlock() |
| { |
| ::pthread_mutex_unlock(&mtx); |
| } |
| |