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/*
Copyright (C) 2008 Grame & RTL
This program 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; either version 2.1 of the License, or
(at your option) any later version.
This program 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 program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#ifndef __JackEngineProfiling__
#define __JackEngineProfiling__
#include "types.h"
#include "JackTypes.h"
#include "JackConstants.h"
#include "JackShmMem.h"
namespace Jack
{
#define TIME_POINTS 100000
#define FAILURE_TIME_POINTS 10000
#define FAILURE_WINDOW 10
#define MEASURED_CLIENTS 32
/*!
\brief Timing stucture for a client.
*/
PRE_PACKED_STRUCTURE
struct JackTimingMeasureClient
{
int fRefNum;
jack_time_t fSignaledAt;
jack_time_t fAwakeAt;
jack_time_t fFinishedAt;
jack_client_state_t fStatus;
JackTimingMeasureClient()
:fRefNum(-1),
fSignaledAt(0),
fAwakeAt(0),
fFinishedAt(0),
fStatus((jack_client_state_t)0)
{}
} POST_PACKED_STRUCTURE;
/*!
\brief Timing interval in the global table for a given client
*/
PRE_PACKED_STRUCTURE
struct JackTimingClientInterval
{
int fRefNum;
char fName[JACK_CLIENT_NAME_SIZE + 1];
int fBeginInterval;
int fEndInterval;
JackTimingClientInterval()
:fRefNum(-1),
fBeginInterval(-1),
fEndInterval(-1)
{}
} POST_PACKED_STRUCTURE;
/*!
\brief Timing stucture for a table of clients.
*/
PRE_PACKED_STRUCTURE
struct JackTimingMeasure
{
unsigned int fAudioCycle;
jack_time_t fPeriodUsecs;
jack_time_t fCurCycleBegin;
jack_time_t fPrevCycleEnd;
JackTimingMeasureClient fClientTable[CLIENT_NUM];
JackTimingMeasure()
:fAudioCycle(0),
fPeriodUsecs(0),
fCurCycleBegin(0),
fPrevCycleEnd(0)
{}
} POST_PACKED_STRUCTURE;
/*!
\brief Client timing monitoring.
*/
class JackClientInterface;
class JackGraphManager;
PRE_PACKED_STRUCTURE
class SERVER_EXPORT JackEngineProfiling
{
private:
JackTimingMeasure fProfileTable[TIME_POINTS];
JackTimingClientInterval fIntervalTable[MEASURED_CLIENTS];
unsigned int fAudioCycle;
unsigned int fMeasuredClient;
bool CheckClient(const char* name, int cur_point);
public:
JackEngineProfiling();
~JackEngineProfiling();
void Profile(JackClientInterface** table,
JackGraphManager* manager,
jack_time_t period_usecs,
jack_time_t cur_cycle_begin,
jack_time_t prev_cycle_end);
JackTimingMeasure* GetCurMeasure();
} POST_PACKED_STRUCTURE;
} // end of namespace
#endif
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