2 * Copyright (C) 2005-2013 Team XBMC
5 * This Program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2, or (at your option)
10 * This Program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with XBMC; see the file COPYING. If not, see
17 * <http://www.gnu.org/licenses/>.
21 #include "BackgroundInfoLoader.h"
23 #include "settings/AdvancedSettings.h"
24 #include "threads/SingleLock.h"
25 #include "utils/log.h"
29 #define ITEMS_PER_THREAD 5
31 CBackgroundInfoLoader::CBackgroundInfoLoader(int nThreads)
35 m_pProgressCallback=NULL;
37 m_nRequestedThreads = nThreads;
38 m_bStartCalled = false;
42 CBackgroundInfoLoader::~CBackgroundInfoLoader()
47 void CBackgroundInfoLoader::SetNumOfWorkers(int nThreads)
49 m_nRequestedThreads = nThreads;
52 void CBackgroundInfoLoader::Run()
56 if (m_vecItems.size() > 0)
59 CSingleLock lock(m_lock);
63 m_bStartCalled = true;
69 CSingleLock lock(m_lock);
71 vector<CFileItemPtr>::iterator iter = m_vecItems.begin();
72 if (iter != m_vecItems.end())
75 m_vecItems.erase(iter);
81 // Ask the callback if we should abort
82 if ((m_pProgressCallback && m_pProgressCallback->Abort()) || m_bStop)
88 if (LoadItem(pItem.get()) && m_pObserver)
89 m_pObserver->OnItemLoaded(pItem.get());
93 CLog::Log(LOGERROR, "%s::LoadItem - Unhandled exception for item %s", __FUNCTION__, pItem->GetPath().c_str());
98 CSingleLock lock(m_lock);
99 if (m_nActiveThreads == 1)
107 CLog::Log(LOGERROR, "%s - Unhandled exception", __FUNCTION__);
111 void CBackgroundInfoLoader::Load(CFileItemList& items)
115 if (items.Size() == 0)
118 CSingleLock lock(m_lock);
120 for (int nItem=0; nItem < items.Size(); nItem++)
121 m_vecItems.push_back(items[nItem]);
123 m_pVecItems = &items;
125 m_bStartCalled = false;
127 int nThreads = m_nRequestedThreads;
129 nThreads = (m_vecItems.size() / (ITEMS_PER_THREAD+1)) + 1;
131 if (nThreads > g_advancedSettings.m_bgInfoLoaderMaxThreads)
132 nThreads = g_advancedSettings.m_bgInfoLoaderMaxThreads;
134 m_nActiveThreads = nThreads;
135 for (int i=0; i < nThreads; i++)
137 CThread *pThread = new CThread(this, "Background Loader");
140 pThread->SetPriority(THREAD_PRIORITY_BELOW_NORMAL);
142 m_workers.push_back(pThread);
147 void CBackgroundInfoLoader::StopAsync()
153 void CBackgroundInfoLoader::StopThread()
157 for (int i=0; i<(int)m_workers.size(); i++)
159 m_workers[i]->StopThread();
166 m_nActiveThreads = 0;
169 bool CBackgroundInfoLoader::IsLoading()
171 return m_nActiveThreads > 0;
174 void CBackgroundInfoLoader::SetObserver(IBackgroundLoaderObserver* pObserver)
176 m_pObserver = pObserver;
179 void CBackgroundInfoLoader::SetProgressCallback(IProgressCallback* pCallback)
181 m_pProgressCallback = pCallback;