icinga2/lib/base/process.h

112 lines
3.2 KiB
C++

/******************************************************************************
* Icinga 2 *
* Copyright (C) 2012 Icinga Development Team (http://www.icinga.org/) *
* *
* 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. *
******************************************************************************/
#ifndef PROCESS_H
#define PROCESS_H
#include "base/i2-base.h"
#include "base/timer.h"
#include "base/asynctask.h"
#include "base/dictionary.h"
#include <sstream>
#include <deque>
#include <boost/thread/mutex.hpp>
#include <boost/thread/condition_variable.hpp>
#include <boost/thread/once.hpp>
namespace icinga
{
/**
* The result of a Process task.
*
* @ingroup base
*/
struct ProcessResult
{
double ExecutionStart;
double ExecutionEnd;
long ExitStatus;
String Output;
};
/**
* A process task. Executes an external application and returns the exit
* code and console output.
*
* @ingroup base
*/
class I2_BASE_API Process : public AsyncTask<Process, ProcessResult>
{
public:
typedef shared_ptr<Process> Ptr;
typedef weak_ptr<Process> WeakPtr;
static const std::deque<Process::Ptr>::size_type MaxTasksPerThread = 512;
Process(const std::vector<String>& arguments, const Dictionary::Ptr& extraEnvironment = Dictionary::Ptr());
static std::vector<String> SplitCommand(const Value& command);
private:
std::vector<String> m_Arguments;
Dictionary::Ptr m_ExtraEnvironment;
#ifndef _WIN32
pid_t m_Pid;
int m_FD;
#endif /* _WIN32 */
std::ostringstream m_OutputStream;
ProcessResult m_Result;
virtual void Run(void);
static boost::mutex m_Mutex;
static std::deque<Process::Ptr> m_Tasks;
#ifndef _WIN32
static boost::condition_variable m_CV;
static int m_TaskFd;
static Timer::Ptr m_StatusTimer;
#endif /* _WIN32 */
void QueueTask(void);
void SpawnTask(void);
#ifdef _WIN32
static void WorkerThreadProc(void);
#else /* _WIN32 */
static void WorkerThreadProc(int taskFd);
static void StatusTimerHandler(void);
#endif /* _WIN32 */
void InitTask(void);
bool RunTask(void);
static boost::once_flag m_ThreadOnce;
static void Initialize(void);
};
}
#endif /* PROCESS_H */