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/**CFile****************************************************************
FileName [fsimMan.c]
SystemName [ABC: Logic synthesis and verification system.]
PackageName [Fast sequential AIG simulator.]
Synopsis [Simulation manager.]
Author [Alan Mishchenko]
Affiliation [UC Berkeley]
Date [Ver. 1.0. Started - June 20, 2005.]
Revision [$Id: fsimMan.c,v 1.00 2005/06/20 00:00:00 alanmi Exp $]
***********************************************************************/
#include "fsimInt.h"
////////////////////////////////////////////////////////////////////////
/// DECLARATIONS ///
////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////
/// FUNCTION DEFINITIONS ///
////////////////////////////////////////////////////////////////////////
/**Function*************************************************************
Synopsis [Creates fast simulation manager.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
int Fsim_ManCreate_rec( Fsim_Man_t * p, Aig_Obj_t * pObj )
{
int iFan0, iFan1, iTemp;
assert( !Aig_IsComplement(pObj) );
if ( pObj->iData )
return pObj->iData;
assert( !Aig_ObjIsConst1(pObj) );
if ( Aig_ObjIsNode(pObj) )
{
iFan0 = Fsim_ManCreate_rec( p, Aig_ObjFanin0(pObj) );
iFan1 = Fsim_ManCreate_rec( p, Aig_ObjFanin1(pObj) );
assert( iFan0 != iFan1 );
if ( --p->pRefs[iFan0] == 0 )
p->nCrossCut--;
iFan0 = Fsim_Var2Lit( iFan0, Aig_ObjFaninC0(pObj) );
if ( --p->pRefs[iFan1] == 0 )
p->nCrossCut--;
iFan1 = Fsim_Var2Lit( iFan1, Aig_ObjFaninC1(pObj) );
if ( p->pAig->pEquivs )
Fsim_ManCreate_rec( p, Aig_ObjEquiv(p->pAig, pObj) );
}
else if ( Aig_ObjIsPo(pObj) )
{
assert( Aig_ObjRefs(pObj) == 0 );
iFan0 = Fsim_ManCreate_rec( p, Aig_ObjFanin0(pObj) );
if ( --p->pRefs[iFan0] == 0 )
p->nCrossCut--;
iFan0 = Fsim_Var2Lit( iFan0, Aig_ObjFaninC0(pObj) );
iFan1 = 0;
}
else
{
iFan0 = iFan1 = 0;
Vec_IntPush( p->vCis2Ids, Aig_ObjPioNum(pObj) );
}
if ( iFan0 < iFan1 )
iTemp = iFan0, iFan0 = iFan1, iFan1 = iTemp;
p->pFans0[p->nObjs] = iFan0;
p->pFans1[p->nObjs] = iFan1;
p->pRefs[p->nObjs] = Aig_ObjRefs(pObj);
if ( p->pRefs[p->nObjs] )
if ( p->nCrossCutMax < ++p->nCrossCut )
p->nCrossCutMax = p->nCrossCut;
return pObj->iData = p->nObjs++;
}
/**Function*************************************************************
Synopsis [Creates fast simulation manager.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
Fsim_Man_t * Fsim_ManCreate( Aig_Man_t * pAig )
{
Fsim_Man_t * p;
Aig_Obj_t * pObj;
int i, nObjs;
Aig_ManCleanData( pAig );
p = (Fsim_Man_t *)ABC_ALLOC( Fsim_Man_t, 1 );
memset( p, 0, sizeof(Fsim_Man_t) );
p->pAig = pAig;
p->nPis = Saig_ManPiNum(pAig);
p->nPos = Saig_ManPoNum(pAig);
p->nCis = Aig_ManPiNum(pAig);
p->nCos = Aig_ManPoNum(pAig);
p->nNodes = Aig_ManNodeNum(pAig);
nObjs = p->nCis + p->nCos + p->nNodes + 2;
p->pFans0 = ABC_ALLOC( int, nObjs );
p->pFans1 = ABC_ALLOC( int, nObjs );
p->pRefs = ABC_ALLOC( int, nObjs );
p->vCis2Ids = Vec_IntAlloc( Aig_ManPiNum(pAig) );
// add objects (0=unused; 1=const1)
p->pFans0[0] = p->pFans1[0] = 0;
p->pFans0[1] = p->pFans1[1] = 0;
p->pRefs[0] = 0;
p->nObjs = 2;
pObj = Aig_ManConst1( pAig );
pObj->iData = 1;
p->pRefs[1] = Aig_ObjRefs(pObj);
if ( p->pRefs[1] )
p->nCrossCut = 1;
Aig_ManForEachPi( pAig, pObj, i )
if ( Aig_ObjRefs(pObj) == 0 )
Fsim_ManCreate_rec( p, pObj );
Aig_ManForEachPo( pAig, pObj, i )
Fsim_ManCreate_rec( p, pObj );
assert( Vec_IntSize(p->vCis2Ids) == Aig_ManPiNum(pAig) );
assert( p->nObjs == nObjs );
// check references
assert( p->nCrossCut == 0 );
Aig_ManForEachObj( pAig, pObj, i )
{
assert( p->pRefs[pObj->iData] == 0 );
p->pRefs[pObj->iData] = Aig_ObjRefs(pObj);
}
// collect flop outputs
p->vLos = Vec_IntAlloc( Aig_ManRegNum(pAig) );
Saig_ManForEachLo( pAig, pObj, i )
Vec_IntPush( p->vLos, pObj->iData );
// collect flop inputs
p->vLis = Vec_IntAlloc( Aig_ManRegNum(pAig) );
Saig_ManForEachLi( pAig, pObj, i )
Vec_IntPush( p->vLis, pObj->iData );
// determine the frontier size
p->nFront = 1 + (int)(1.1 * p->nCrossCutMax);
return p;
}
/**Function*************************************************************
Synopsis [Deletes fast simulation manager.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
void Fsim_ManDelete( Fsim_Man_t * p )
{
Vec_IntFree( p->vCis2Ids );
Vec_IntFree( p->vLos );
Vec_IntFree( p->vLis );
ABC_FREE( p->pDataAig2 );
ABC_FREE( p->pDataAig );
ABC_FREE( p->pFans0 );
ABC_FREE( p->pFans1 );
ABC_FREE( p->pRefs );
ABC_FREE( p->pDataSim );
ABC_FREE( p->pDataSimCis );
ABC_FREE( p->pDataSimCos );
ABC_FREE( p->pData1 );
ABC_FREE( p->pData2 );
ABC_FREE( p );
}
/**Function*************************************************************
Synopsis [Testing procedure.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
void Fsim_ManTest( Aig_Man_t * pAig )
{
Fsim_Man_t * p;
p = Fsim_ManCreate( pAig );
Fsim_ManFront( p, 0 );
Fsim_ManDelete( p );
}
////////////////////////////////////////////////////////////////////////
/// END OF FILE ///
////////////////////////////////////////////////////////////////////////
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