Adding upstream version 2.14.2.upstream/2.14.2upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 117 insertions, 0 deletions

diff --git a/lib/base/process.hpp b/lib/base/process.hpp
new file mode 100644
index 0000000..d83ba6e
--- /dev/null
+++ b/lib/base/process.hpp
@@ -0,0 +1,117 @@
+/* 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 */