/usr/include/falcon/rampmode.h is in falconpl-dev 0.9.6.9-git20120606-2.1+b1.
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FALCON - The Falcon Programming Language.
FILE: rampmode.h
Ramp mode - progressive GC limits adjustment algoritmhs
-------------------------------------------------------------------
Author: Giancarlo Niccolai
Begin: Wed, 18 Mar 2009 19:55:25 +0100
-------------------------------------------------------------------
(C) Copyright 2009: the FALCON developers (see list in AUTHORS file)
See LICENSE file for licensing details.
*/
#ifndef FALCON_RAMP_MODE_H
#define FALCON_RAMP_MODE_H
#include <falcon/setup.h>
#include <falcon/types.h>
#include <falcon/basealloc.h>
#include <stdlib.h>
namespace Falcon {
/** Ramp-up GC parameters base class.
The subclasses of this virtual class contain a configurable algorithm used by the
Memory Pool to update its status after a succesful garbage collection.
*/
class FALCON_DYN_CLASS RampMode: public BaseAlloc
{
protected:
size_t m_normal;
size_t m_active;
public:
RampMode() {}
virtual ~RampMode();
/** Called before starting a scan loop.
No need for parameters as mempool, memory sizes and statistics are
globally available.
*/
virtual void onScanInit()=0;
/** Called when the scan is complete and there is the need for a new calculation.
No need for parameters as mempool, memory sizes and statistics are
globally available.
*/
virtual void onScanComplete()=0;
/** Called when first set. */
virtual void reset();
/** Returns the lastly calculated memory level for the normal status. */
size_t normalLevel() const { return m_normal; }
/** Returns the lastly calculated memory level for the active status. */
size_t activeLevel() const { return m_active; }
};
#define RAMP_MODE_OFF 0
/** Disables ramping.
Never changes the warning levels.
*/
class FALCON_DYN_CLASS RampNone: public RampMode
{
public:
RampNone():
RampMode()
{}
virtual ~RampNone();
virtual void onScanInit();
virtual void onScanComplete();
};
/** Enforces a strict inspection policy.
The warning active level is set to the quantity of
memory used after the last collection loop.
*/
class FALCON_DYN_CLASS RampStrict: public RampMode
{
public:
RampStrict():
RampMode()
{}
virtual ~RampStrict();
virtual void onScanInit();
virtual void onScanComplete();
};
#define RAMP_MODE_STRICT_ID 1
class FALCON_DYN_CLASS RampLoose: public RampMode
{
public:
RampLoose():
RampMode()
{}
virtual ~RampLoose();
virtual void onScanInit();
virtual void onScanComplete();
};
#define RAMP_MODE_LOOSE_ID 2
class FALCON_DYN_CLASS RampSmooth: public RampMode
{
size_t m_pNormal;
size_t m_pActive;
numeric m_factor;
public:
RampSmooth( numeric factor );
virtual ~RampSmooth();
virtual void reset();
virtual void onScanInit();
virtual void onScanComplete();
};
#define RAMP_MODE_SMOOTH_SLOW_ID 3
#define RAMP_MODE_SMOOTH_FAST_ID 4
#define RAMP_MODE_COUNT 5
#define DEFAULT_RAMP_MODE RAMP_MODE_SMOOTH_SLOW_ID
}
#endif
/* end of rampmode.h */
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