91 lines
2.8 KiB
C++
91 lines
2.8 KiB
C++
/**
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* @file llprocesslauncher.h
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* @brief Utility class for launching, terminating, and tracking the state of processes.
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*
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* $LicenseInfo:firstyear=2008&license=viewerlgpl$
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* Second Life Viewer Source Code
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* Copyright (C) 2010, Linden Research, Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation;
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* version 2.1 of the License only.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*
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* Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
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* $/LicenseInfo$
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*/
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#ifndef LL_LLPROCESSLAUNCHER_H
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#define LL_LLPROCESSLAUNCHER_H
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#if LL_WINDOWS
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#include <windows.h>
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#endif
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/*
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LLProcessLauncher handles launching external processes with specified command line arguments.
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It also keeps track of whether the process is still running, and can kill it if required.
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*/
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class LL_COMMON_API LLProcessLauncher
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{
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LOG_CLASS(LLProcessLauncher);
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public:
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LLProcessLauncher();
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virtual ~LLProcessLauncher();
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void setExecutable(const std::string &executable);
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void setWorkingDirectory(const std::string &dir);
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const std::string& getExecutable() const;
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void clearArguments();
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void addArgument(const std::string &arg);
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void addArgument(const char *arg);
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int launch(void);
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bool isRunning(void);
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// Attempt to kill the process -- returns true if the process is no longer running when it returns.
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// Note that even if this returns false, the process may exit some time after it's called.
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bool kill(void);
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// Use this if you want the external process to continue execution after the LLProcessLauncher instance controlling it is deleted.
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// Normally, the destructor will attempt to kill the process and wait for termination.
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// This should only be used if the viewer is about to exit -- otherwise, the child process will become a zombie after it exits.
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void orphan(void);
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// This needs to be called periodically on Mac/Linux to clean up zombie processes.
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static void reap(void);
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// Accessors for platform-specific process ID
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#if LL_WINDOWS
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HANDLE getProcessHandle() { return mProcessHandle; };
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#else
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pid_t getProcessID() { return mProcessID; };
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#endif
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private:
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std::string mExecutable;
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std::string mWorkingDir;
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std::vector<std::string> mLaunchArguments;
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#if LL_WINDOWS
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HANDLE mProcessHandle;
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#else
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pid_t mProcessID;
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#endif
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};
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#endif // LL_LLPROCESSLAUNCHER_H
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