llprocesslauncher.h
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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) 2008-2010, 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);
-
- // Accessors for platform-specific process ID
- #if LL_WINDOWS
- HANDLE getProcessHandle() { return mProcessHandle; };
- #else
- pid_t getProcessID() { return mProcessID; };
- #endif
-
- private:
- std::string mExecutable;
- std::string mWorkingDir;
- std::vector<std::string> mLaunchArguments;
-
- #if LL_WINDOWS
- HANDLE mProcessHandle;
- #else
- pid_t mProcessID;
- #endif
- };
- #endif // LL_LLPROCESSLAUNCHER_H