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/**
* @file llprocesslauncher.h
* @brief Utility class for launching, terminating, and tracking the state of processes.
*
* $LicenseInfo:firstyear=2008&license=viewergpl$
*
* Copyright (c) 2008-2009, Linden Research, Inc.
*
* Second Life Viewer Source Code
* The source code in this file ("Source Code") is provided by Linden Lab
* to you under the terms of the GNU General Public License, version 2.0
* ("GPL"), unless you have obtained a separate licensing agreement
* ("Other License"), formally executed by you and Linden Lab. Terms of
* the GPL can be found in doc/GPL-license.txt in this distribution, or
* online at http://secondlifegrid.net/programs/open_source/licensing/gplv2
*
* There are special exceptions to the terms and conditions of the GPL as
* it is applied to this Source Code. View the full text of the exception
* in the file doc/FLOSS-exception.txt in this software distribution, or
* online at
* http://secondlifegrid.net/programs/open_source/licensing/flossexception
*
* By copying, modifying or distributing this software, you acknowledge
* that you have read and understood your obligations described above,
* and agree to abide by those obligations.
*
* ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
* WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
* COMPLETENESS OR PERFORMANCE.
* $/LicenseInfo$
*/
#ifndef LL_LLPROCESSLAUNCHER_H
#define LL_LLPROCESSLAUNCHER_H
#if LL_WINDOWS
#include <windows.h>
#endif
/*
LLProcessLauncher handles launching external processes with specified command line arguments.
It also keeps track of whether the process is still running, and can kill it if required.
*/
class LL_COMMON_API LLProcessLauncher
{
LOG_CLASS(LLProcessLauncher);
public:
LLProcessLauncher();
virtual ~LLProcessLauncher();
void setExecutable(const std::string &executable);
void setWorkingDirectory(const std::string &dir);
void clearArguments();
void addArgument(const std::string &arg);
void addArgument(const char *arg);
int launch(void);
bool isRunning(void);
// Attempt to kill the process -- returns true if the process is no longer running when it returns.
// Note that even if this returns false, the process may exit some time after it's called.
bool kill(void);
// Use this if you want the external process to continue execution after the LLProcessLauncher instance controlling it is deleted.
// Normally, the destructor will attempt to kill the process and wait for termination.
// This should only be used if the viewer is about to exit -- otherwise, the child process will become a zombie after it exits.
void orphan(void);
// This needs to be called periodically on Mac/Linux to clean up zombie processes.
static void reap(void);
private:
std::string mExecutable;
std::string mWorkingDir;
std::vector<std::string> mLaunchArguments;
#if LL_WINDOWS
HANDLE mProcessHandle;
#else
pid_t mProcessID;
public:
pid_t getProcessID() const { return mProcessID; }
#endif
};
#endif // LL_LLPROCESSLAUNCHER_H
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