mirror of https://github.com/Icinga/icinga2.git
68 lines
2.4 KiB
C++
68 lines
2.4 KiB
C++
/******************************************************************************
|
|
* Icinga 2 *
|
|
* Copyright (C) 2012-2017 Icinga Development Team (https://www.icinga.com/) *
|
|
* *
|
|
* This program is free software; you can redistribute it and/or *
|
|
* modify it under the terms of the GNU General Public License *
|
|
* as published by the Free Software Foundation; either version 2 *
|
|
* of the License, or (at your option) any later version. *
|
|
* *
|
|
* This program is distributed in the hope that it will be useful, *
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
|
|
* GNU General Public License for more details. *
|
|
* *
|
|
* You should have received a copy of the GNU General Public License *
|
|
* along with this program; if not, write to the Free Software Foundation *
|
|
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. *
|
|
******************************************************************************/
|
|
|
|
#include "base/dependencygraph.hpp"
|
|
|
|
using namespace icinga;
|
|
|
|
boost::mutex DependencyGraph::m_Mutex;
|
|
std::map<Object *, std::map<Object *, int> > DependencyGraph::m_Dependencies;
|
|
|
|
void DependencyGraph::AddDependency(Object *parent, Object *child)
|
|
{
|
|
boost::mutex::scoped_lock lock(m_Mutex);
|
|
m_Dependencies[child][parent]++;
|
|
}
|
|
|
|
void DependencyGraph::RemoveDependency(Object *parent, Object *child)
|
|
{
|
|
boost::mutex::scoped_lock lock(m_Mutex);
|
|
|
|
auto& refs = m_Dependencies[child];
|
|
auto it = refs.find(parent);
|
|
|
|
if (it == refs.end())
|
|
return;
|
|
|
|
it->second--;
|
|
|
|
if (it->second == 0)
|
|
refs.erase(it);
|
|
|
|
if (refs.empty())
|
|
m_Dependencies.erase(child);
|
|
}
|
|
|
|
std::vector<Object::Ptr> DependencyGraph::GetParents(const Object::Ptr& child)
|
|
{
|
|
std::vector<Object::Ptr> objects;
|
|
|
|
boost::mutex::scoped_lock lock(m_Mutex);
|
|
auto it = m_Dependencies.find(child.get());
|
|
|
|
if (it != m_Dependencies.end()) {
|
|
typedef std::pair<Object *, int> kv_pair;
|
|
for (const kv_pair& kv : it->second) {
|
|
objects.push_back(kv.first);
|
|
}
|
|
}
|
|
|
|
return objects;
|
|
}
|