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 * 
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
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// MARKER(update_precomp.py): autogen include statement, do not remove
#include "precompiled_automation.hxx"


#include <procfs.h>
#include <tools/stream.hxx>
#include "profiler.hxx"


struct SysdepProfileSnapshot
{
	pstatus mpstatus;
	psinfo mpsinfo;
	prusage mprusage;
};


struct SysdepStaticData
{
	// Hier steht alles, was während des Profiles ständig gebraucht wird
};


void TTProfiler::InitSysdepProfiler()
{
	if ( !pSysDepStatic )	// Sollte immer so sein!!
		pSysDepStatic = new SysdepStaticData;
	// Hier initialisieren

};

void TTProfiler::DeinitSysdepProfiler()
{
	if ( pSysDepStatic )	// Sollte immer so sein!!
	{
		// Hier aufräumen und eventuell Speicher freigeben

		delete pSysDepStatic;
	}
};

SysdepProfileSnapshot *TTProfiler::NewSysdepSnapshotData()
{
	return new SysdepProfileSnapshot;
};

void TTProfiler::DeleteSysdepSnapshotData( SysdepProfileSnapshot *pSysdepProfileSnapshot )
{
	delete pSysdepProfileSnapshot;
};


// Titelzeile für Logdatei
String TTProfiler::GetSysdepProfileHeader()
{
	return String::CreateFromAscii(" Size(Kb) ResidentSZ  rtime  ktime  utime  total");
};


// Zustand merken
void TTProfiler::GetSysdepProfileSnapshot( SysdepProfileSnapshot *pSysdepProfileSnapshot, sal_uInt16 )
{
	SvFileStream aStream( String::CreateFromAscii("/proc/self/psinfo"), STREAM_READ );		// Das ist ein expliziter Pfad für UNXSOL!
	if ( aStream.IsOpen() )
	{
		aStream.Read( &(pSysdepProfileSnapshot->mpsinfo), sizeof( psinfo ) );
		aStream.Close();
	}
	SvFileStream anotherStream( String::CreateFromAscii("/proc/self/status"), STREAM_READ );		// Das ist ein expliziter Pfad für UNXSOL!
	if ( anotherStream.IsOpen() )
	{
		anotherStream.Read( &(pSysdepProfileSnapshot->mpstatus), sizeof( pstatus ) );
		anotherStream.Close();
	}
	SvFileStream YetAnotherStream( String::CreateFromAscii("/proc/self/usage"), STREAM_READ );		// Das ist ein expliziter Pfad für UNXSOL!
	if ( YetAnotherStream.IsOpen() )
	{
		YetAnotherStream.Read( &(pSysdepProfileSnapshot->mprusage), sizeof( prusage ) );
		YetAnotherStream.Close();
	}
};

#define DIFF2( aFirst, aSecond, Membername ) ( aSecond.Membername - aFirst.Membername )
#define CALC_MS( nSec, nNSec ) ( nSec * 1000 + (nNSec+500000) / 1000000 )
#define DIFF_MS( pStart, pEnd, Member ) ( CALC_MS( pEnd->Member.tv_sec, pEnd->Member.tv_nsec ) - CALC_MS( pStart->Member.tv_sec, pStart->Member.tv_nsec ) )
// Informationszeile zusammenbauen
String TTProfiler::GetSysdepProfileLine( SysdepProfileSnapshot *pStart, SysdepProfileSnapshot *pStop )
{
	String aProfile;

	aProfile += Pad( String::CreateFromInt64(pStop->mpsinfo.pr_size), 9);
	aProfile += Pad( String::CreateFromInt64(pStop->mpsinfo.pr_rssize), 11);


	aProfile += Pad( String::CreateFromInt64(DIFF_MS( pStart, pStop, mprusage.pr_rtime ) / AVER( pStart, pStop, mprusage.pr_count )), 7 );

	
	sal_uLong d_utime = DIFF_MS( pStart, pStop, mpstatus.pr_utime ) + DIFF_MS( pStart, pStop, mpstatus.pr_cutime );
	sal_uLong d_stime = DIFF_MS( pStart, pStop, mpstatus.pr_stime ) + DIFF_MS( pStart, pStop, mpstatus.pr_cstime );
	
	aProfile += Pad( String::CreateFromInt64(d_utime), 7 );
	aProfile += Pad( String::CreateFromInt64(d_stime), 7 );
	aProfile += Pad( String::CreateFromInt64(d_utime + d_stime), 7 );

	return aProfile;
};