nwkMan.c

/**CFile****************************************************************

  FileName    [nwkMan.c]

  SystemName  [ABC: Logic synthesis and verification system.]

  PackageName [Logic network representation.]
 
  Synopsis    [Network manager.]

  Author      [Alan Mishchenko]
  
  Affiliation [UC Berkeley]

  Date        [Ver. 1.0. Started - June 20, 2005.]

  Revision    [$Id: nwkMan.c,v 1.1 2008/10/10 14:09:30 mjarvin Exp $]

***********************************************************************/

#include "nwk.h"

ABC_NAMESPACE_IMPL_START


////////////////////////////////////////////////////////////////////////
///                        DECLARATIONS                              ///
////////////////////////////////////////////////////////////////////////

////////////////////////////////////////////////////////////////////////
///                     FUNCTION DEFINITIONS                         ///
////////////////////////////////////////////////////////////////////////

/**Function*************************************************************

  Synopsis    [Allocates the manager.]

  Description []
               
  SideEffects []

  SeeAlso     []

***********************************************************************/
Nwk_Man_t * Nwk_ManAlloc()
{
    Nwk_Man_t * p;
    p = ABC_ALLOC( Nwk_Man_t, 1 );
    memset( p, 0, sizeof(Nwk_Man_t) );
    p->vCis = Vec_PtrAlloc( 1000 );
    p->vCos = Vec_PtrAlloc( 1000 );
    p->vObjs = Vec_PtrAlloc( 1000 );
    p->vTemp = Vec_PtrAlloc( 1000 );
    p->nFanioPlus = 2;
    p->pMemObjs = Aig_MmFlexStart();
    p->pManHop = Hop_ManStart();
    return p;
}

/**Function*************************************************************

  Synopsis    [Deallocates the manager.]

  Description []
               
  SideEffects []

  SeeAlso     []

***********************************************************************/
void Nwk_ManFree( Nwk_Man_t * p )
{
//    printf( "The number of realloced nodes = %d.\n", p->nRealloced );
    if ( p->pName )    ABC_FREE( p->pName );
    if ( p->pSpec )    ABC_FREE( p->pSpec );
    if ( p->vCis )     Vec_PtrFree( p->vCis );
    if ( p->vCos )     Vec_PtrFree( p->vCos );
    if ( p->vObjs )    Vec_PtrFree( p->vObjs );
    if ( p->vTemp )    Vec_PtrFree( p->vTemp );
    if ( p->pManTime ) Tim_ManStop( p->pManTime );
    if ( p->pMemObjs ) Aig_MmFlexStop( p->pMemObjs, 0 );
    if ( p->pManHop )  Hop_ManStop( p->pManHop );
    ABC_FREE( p );
}

/**Function*************************************************************

  Synopsis    [Prints stats of the manager.]

  Description []
               
  SideEffects []

  SeeAlso     []

***********************************************************************/
void Nwk_ManPrintLutSizes( Nwk_Man_t * p, If_LibLut_t * pLutLib )
{
    Nwk_Obj_t * pObj;
    int i, Counters[256] = {0};
    Nwk_ManForEachNode( p, pObj, i )
        Counters[Nwk_ObjFaninNum(pObj)]++;
    printf( "LUTs by size: " );
    for ( i = 0; i <= pLutLib->LutMax; i++ )
        printf( "%d:%d ", i, Counters[i] );
}

/**Function*************************************************************

  Synopsis    [If the network is best, saves it in "best.blif" and returns 1.]

  Description [If the networks are incomparable, saves the new network, 
  returns its parameters in the internal parameter structure, and returns 1.
  If the new network is not a logic network, quits without saving and returns 0.]
               
  SideEffects []

  SeeAlso     []

***********************************************************************/
int Nwk_ManCompareAndSaveBest( Nwk_Man_t * pNtk, void * pNtl )
{
//    extern void Ntl_WriteBlifLogic( Nwk_Man_t * pNtk, void * pNtl, char * pFileName );
    extern void Nwk_ManDumpBlif( Nwk_Man_t * pNtk, char * pFileName, Vec_Ptr_t * vPiNames, Vec_Ptr_t * vPoNames );
    static struct ParStruct {
        char * pName;  // name of the best saved network
        int    Depth;  // depth of the best saved network
        int    Flops;  // flops in the best saved network 
        int    Nodes;  // nodes in the best saved network
        int    nPis;   // the number of primary inputs
        int    nPos;   // the number of primary outputs
    } ParsNew, ParsBest = { 0 };
    // free storage for the name
    if ( pNtk == NULL )
    {
        ABC_FREE( ParsBest.pName );
        return 0;
    }
    // get the parameters
    ParsNew.Depth = Nwk_ManLevel( pNtk );
    ParsNew.Flops = Nwk_ManLatchNum( pNtk );
    ParsNew.Nodes = Nwk_ManNodeNum( pNtk );
    ParsNew.nPis  = Nwk_ManPiNum( pNtk );
    ParsNew.nPos  = Nwk_ManPoNum( pNtk );
    // reset the parameters if the network has the same name
    if (  ParsBest.pName == NULL ||
          strcmp(ParsBest.pName, pNtk->pName) ||
          ParsBest.Depth >  ParsNew.Depth ||
         (ParsBest.Depth == ParsNew.Depth && ParsBest.Flops >  ParsNew.Flops) ||
         (ParsBest.Depth == ParsNew.Depth && ParsBest.Flops == ParsNew.Flops && ParsBest.Nodes >  ParsNew.Nodes) )
    {
        ABC_FREE( ParsBest.pName );
        ParsBest.pName = Abc_UtilStrsav( pNtk->pName );
        ParsBest.Depth = ParsNew.Depth; 
        ParsBest.Flops = ParsNew.Flops; 
        ParsBest.Nodes = ParsNew.Nodes; 
        ParsBest.nPis  = ParsNew.nPis; 
        ParsBest.nPos  = ParsNew.nPos;
        // write the network
//        Ntl_WriteBlifLogic( pNtk, pNtl, "best.blif" );
//        Nwk_ManDumpBlif( pNtk, "best_map.blif", NULL, NULL );
        return 1;
    }
    return 0;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
char * Nwk_FileNameGeneric( char * FileName )
{
    char * pDot, * pRes;
    pRes = Abc_UtilStrsav( FileName );
    if ( (pDot = strrchr( pRes, '.' )) )
        *pDot = 0;
    return pRes;
}

/**Function*************************************************************

  Synopsis    [Marks nodes for power-optimization.]

  Description []
               
  SideEffects []

  SeeAlso     []

***********************************************************************/
float Nwl_ManComputeTotalSwitching( Nwk_Man_t * pNtk )
{
    extern Vec_Int_t * Saig_ManComputeSwitchProbs( Aig_Man_t * p, int nFrames, int nPref, int fProbOne );
    Vec_Int_t * vSwitching;
    float * pSwitching;
    Aig_Man_t * pAig;
    Aig_Obj_t * pObjAig;
    Nwk_Obj_t * pObjAbc;
    float Result = (float)0;
    int i;
    // strash the network
    // map network into an AIG
    pAig = Nwk_ManStrash( pNtk );
    vSwitching = Saig_ManComputeSwitchProbs( pAig, 48, 16, 0 );
    pSwitching = (float *)vSwitching->pArray;
    Nwk_ManForEachObj( pNtk, pObjAbc, i )
    {
        if ( (pObjAig = Aig_Regular((Aig_Obj_t *)pObjAbc->pCopy)) )
            Result += Nwk_ObjFanoutNum(pObjAbc) * pSwitching[pObjAig->Id];
    }
    Vec_IntFree( vSwitching );
    Aig_ManStop( pAig );
    return Result;
}
 
/**Function*************************************************************

  Synopsis    [Prints stats of the manager.]

  Description []
               
  SideEffects []

  SeeAlso     []

***********************************************************************/
void Nwk_ManPrintStats( Nwk_Man_t * pNtk, If_LibLut_t * pLutLib, int fSaveBest, int fDumpResult, int fPower, Ntl_Man_t * pNtl )
{
//    extern int Ntl_ManLatchNum( Ntl_Man_t * p );
//    extern void Ntl_ManWriteBlifLogic( Nwk_Man_t * pNtk, void * pNtl, char * pFileName );
    if ( fSaveBest )
        Nwk_ManCompareAndSaveBest( pNtk, pNtl );
    if ( fDumpResult )
    {
        char Buffer[1000] = {0};
        const char * pNameGen = pNtk->pSpec? Nwk_FileNameGeneric( pNtk->pSpec ) : "nameless_";
        sprintf( Buffer, "%s_dump.blif", pNameGen );
//        Ntl_ManWriteBlifLogic( pNtk, pNtl, Buffer );
//        sprintf( Buffer, "%s_dump_map.blif", pNameGen );
//        Nwk_ManDumpBlif( pNtk, Buffer, NULL, NULL );
        if ( pNtk->pSpec ) ABC_FREE( pNameGen );
    }

    pNtk->pLutLib = pLutLib;
    printf( "%-15s : ",      pNtk->pName );
    printf( "pi = %5d  ",    Nwk_ManPiNum(pNtk) );
    printf( "po = %5d  ",    Nwk_ManPoNum(pNtk) );
    printf( "ci = %5d  ",    Nwk_ManCiNum(pNtk) );
    printf( "co = %5d  ",    Nwk_ManCoNum(pNtk) );
//    printf( "lat = %5d  ",   Ntl_ManLatchNum(pNtl) );
    printf( "node = %5d  ",  Nwk_ManNodeNum(pNtk) );
    printf( "edge = %5d  ",  Nwk_ManGetTotalFanins(pNtk) );
    printf( "aig = %6d  ",   Nwk_ManGetAigNodeNum(pNtk) );
    printf( "lev = %3d  ",   Nwk_ManLevel(pNtk) );
//    printf( "lev2 = %3d  ",  Nwk_ManLevelBackup(pNtk) );
    printf( "delay = %5.2f  ", Nwk_ManDelayTraceLut(pNtk) );
    if ( fPower )
        printf( "power = %7.2f   ", Nwl_ManComputeTotalSwitching(pNtk) );
    Nwk_ManPrintLutSizes( pNtk, pLutLib );
    printf( "\n" );
//    Nwk_ManDelayTracePrint( pNtk, pLutLib );
    fflush( stdout );
}

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///                       END OF FILE                                ///
////////////////////////////////////////////////////////////////////////


ABC_NAMESPACE_IMPL_END