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/**
* @file llprocinfo.h
* @brief Interface to process/cpu/resource information services.
* @author monty@lindenlab.com
*
* $LicenseInfo:firstyear=2013&license=viewerlgpl$
* Second Life Viewer Source Code
* Copyright (C) 2013, Linden Research, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation;
* version 2.1 of the License only.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
* $/LicenseInfo$
*/
#ifndef LL_PROCINFO_H
#define LL_PROCINFO_H
#include "linden_common.h"
/// @file llprocinfo.h
///
/// Right now, this is really a namespace disguised as a class.
/// It wraps some types and functions to return information about
/// process resource consumption in a non-OS-specific manner.
///
/// Threading: No instances so that's thread-safe. Implementations
/// of static functions should be thread-safe, they mostly involve
/// direct syscall invocations.
///
/// Allocation: Not instantiatable.
class LL_COMMON_API LLProcInfo
{
public:
/// Public types
typedef U64 time_type; /// Relative microseconds
private:
LLProcInfo(); // Not defined
~LLProcInfo(); // Not defined
LLProcInfo(const LLProcInfo &); // Not defined
void operator=(const LLProcInfo &); // Not defined
public:
/// Get accumulated system and user CPU time in
/// microseconds. Syscalls involved in every invocation.
///
/// Threading: expected to be safe.
static void getCPUUsage(time_type & user_time, time_type & system_time);
};
#endif // LL_PROCINFO_H
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