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/* Icinga 2 | (c) 2012 Icinga GmbH | GPLv2+ */
#ifndef PROCESS_H
#define PROCESS_H
#include "base/i2-base.hpp"
#include "base/dictionary.hpp"
#include <iosfwd>
#include <deque>
#include <vector>
#include <sstream>
#include <mutex>
#include <condition_variable>
namespace icinga
{
/**
* The result of a Process task.
*
* @ingroup base
*/
struct ProcessResult
{
pid_t PID;
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 Process final : public Object
{
public:
DECLARE_PTR_TYPEDEFS(Process);
#ifdef _WIN32
typedef String Arguments;
typedef HANDLE ProcessHandle;
typedef HANDLE ConsoleHandle;
#else /* _WIN32 */
typedef std::vector<String> Arguments;
typedef pid_t ProcessHandle;
typedef int ConsoleHandle;
#endif /* _WIN32 */
static const std::deque<Process::Ptr>::size_type MaxTasksPerThread = 512;
Process(Arguments arguments, Dictionary::Ptr extraEnvironment = nullptr);
~Process() override;
void SetTimeout(double timeout);
double GetTimeout() const;
void SetAdjustPriority(bool adjust);
bool GetAdjustPriority() const;
void Run(const std::function<void (const ProcessResult&)>& callback = std::function<void (const ProcessResult&)>());
const ProcessResult& WaitForResult();
pid_t GetPID() const;
static Arguments PrepareCommand(const Value& command);
static void ThreadInitialize();
static String PrettyPrintArguments(const Arguments& arguments);
#ifndef _WIN32
static void InitializeSpawnHelper();
#endif /* _WIN32 */
private:
Arguments m_Arguments;
Dictionary::Ptr m_ExtraEnvironment;
double m_Timeout;
#ifndef _WIN32
bool m_SentSigterm;
#endif /* _WIN32 */
bool m_AdjustPriority;
ProcessHandle m_Process;
pid_t m_PID;
ConsoleHandle m_FD;
#ifdef _WIN32
bool m_ReadPending;
bool m_ReadFailed;
OVERLAPPED m_Overlapped;
char m_ReadBuffer[1024];
#endif /* _WIN32 */
std::ostringstream m_OutputStream;
std::function<void (const ProcessResult&)> m_Callback;
ProcessResult m_Result;
bool m_ResultAvailable;
std::mutex m_ResultMutex;
std::condition_variable m_ResultCondition;
static void IOThreadProc(int tid);
bool DoEvents();
int GetTID() const;
double GetNextTimeout() const;
};
}
#endif /* PROCESS_H */
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