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/**CFile****************************************************************
FileName [tim.h]
SystemName [ABC: Logic synthesis and verification system.]
PackageName [Hierarchy/timing manager.]
Synopsis [External declarations.]
Author [Alan Mishchenko]
Affiliation [UC Berkeley]
Date [Ver. 1.0. Started - April 28, 2007.]
Revision [$Id: tim.h,v 1.00 2007/04/28 00:00:00 alanmi Exp $]
***********************************************************************/
#ifndef ABC__aig__tim__tim_h
#define ABC__aig__tim__tim_h
/*
The data-structure Tim_Man_t implemented in this package stores two types
of information:
(1) hierarchical information about the connectivity of a combinational
logic network with combinational logic node and combinational white boxes
(2) timing information about input-to-output delays of each combinational
white box.
This data-structure is closely coupled with the AIG manager extracted from
the same combinational logic network. The AIG manager represents combinational
logic surrounding white boxes, and contains additional PIs/POs corresponding
to the outputs/inputs of the white boxes.
The manager Tim_Man_t is created by a call to Tim_ManStart(). The arguments
of this call are the total number of all combinational inputs/output in
the extracted AIG. (Note that this number is different from the number of
inputs/outputs of the combinational logic network, because the extracted AIG
will have additional inputs/output due to white boxes.)
The extracted AIG and the corresponding Tim_Man_t may be created at the same
time or at separate times. The following guideline assumes concurrent creation.
First, PIs of the AIG are created in 1-to-1 correspondence with the PIs
of the original network.
Next, all nodes (logic nodes and white boxes) of the network are traversed
in a topologic order.
When a white box is encountered, the TFI cone of box inputs are tranversed
and all new logic nodes encoutered added to the AIG.
Then, the white box is created by the call to Tim_ManCreateBox().
Then, new POs of the AIG are created in 1-to-1 correspondence with box inputs.
Then, new PIs of the AIG are created in 1-to-1 correspondence with box outputs.
Finally, the TFO cone of the POs is traversed and all new logic nodes
encountered added to the AIG.
In the end, the POs of the AIG is constructed in 1-to-1 correspondence with
the PIs of the original combinational logic network.
Delay tables representing input-to-output delays of each type of white
box should be computed in advance and given to the timing manager in one array
through the API Tim_ManSetDelayTables(). When each box is constructed, the delay
table ID of this box (which is the index of the table in the above array) is given
as the last argument 'iDelayTable' in Tim_ManCreateBox().
A delay table is a one-dimensional array of floats whose size is: 3 + nInputs * nOutputs.
The first entry is the delay table ID used by the boxes to refer to the table.
The second and third entries are nInputs and nOutputs.
The following 'nInputs * nOutputs' entries are delay numbers for each output,
that is, the first set of nInputs entries give delay of the first output.
the second set of nInputs entries give delay of the second output, etc.
The Tim_Man_t is typically associated with the AIG manager (pGia) using
pointer (pGia->pManTime). It is automatically deallocated when the host
AIG manager is deleted.
*/
////////////////////////////////////////////////////////////////////////
/// INCLUDES ///
////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////
/// PARAMETERS ///
////////////////////////////////////////////////////////////////////////
ABC_NAMESPACE_HEADER_START
////////////////////////////////////////////////////////////////////////
/// BASIC TYPES ///
////////////////////////////////////////////////////////////////////////
typedef struct Tim_Man_t_ Tim_Man_t;
////////////////////////////////////////////////////////////////////////
/// MACRO DEFINITIONS ///
////////////////////////////////////////////////////////////////////////
#define TIM_ETERNITY 1000000000
////////////////////////////////////////////////////////////////////////
/// ITERATORS ///
////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////
/// SEQUENTIAL ITERATORS ///
////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////
/// FUNCTION DECLARATIONS ///
////////////////////////////////////////////////////////////////////////
/*=== timBox.c ===========================================================*/
extern void Tim_ManCreateBox( Tim_Man_t * p, int firstIn, int nIns, int firstOut, int nOuts, int iDelayTable );
extern int Tim_ManBoxForCi( Tim_Man_t * p, int iCo );
extern int Tim_ManBoxForCo( Tim_Man_t * p, int iCi );
extern int Tim_ManBoxInputFirst( Tim_Man_t * p, int iBox );
extern int Tim_ManBoxOutputFirst( Tim_Man_t * p, int iBox );
extern int Tim_ManBoxInputNum( Tim_Man_t * p, int iBox );
extern int Tim_ManBoxOutputNum( Tim_Man_t * p, int iBox );
extern int Tim_ManBoxDelayTableId( Tim_Man_t * p, int iBox );
extern float * Tim_ManBoxDelayTable( Tim_Man_t * p, int iBox );
extern int Tim_ManBoxCopy( Tim_Man_t * p, int iBox );
extern void Tim_ManBoxSetCopy( Tim_Man_t * p, int iBox, int iCopy );
extern int Tim_ManBoxFindFromCiNum( Tim_Man_t * p, int iCiNum );
/*=== timDump.c ===========================================================*/
extern Vec_Str_t * Tim_ManSave( Tim_Man_t * p, int fHieOnly );
extern Tim_Man_t * Tim_ManLoad( Vec_Str_t * p, int fHieOnly );
/*=== timMan.c ===========================================================*/
extern Tim_Man_t * Tim_ManStart( int nCis, int nCos );
extern Tim_Man_t * Tim_ManDup( Tim_Man_t * p, int fUnitDelay );
extern Tim_Man_t * Tim_ManTrim( Tim_Man_t * p, Vec_Int_t * vBoxPres );
extern void Tim_ManCreate( Tim_Man_t * p, void * pLib, Vec_Flt_t * vInArrs, Vec_Flt_t * vOutReqs );
extern int Tim_ManGetArrsReqs( Tim_Man_t * p, Vec_Flt_t ** pvInArrs, Vec_Flt_t ** pvOutReqs );
extern void Tim_ManStop( Tim_Man_t * p );
extern void Tim_ManStopP( Tim_Man_t ** p );
extern void Tim_ManPrint( Tim_Man_t * p );
extern void Tim_ManPrintStats( Tim_Man_t * p );
extern int Tim_ManCiNum( Tim_Man_t * p );
extern int Tim_ManCoNum( Tim_Man_t * p );
extern int Tim_ManPiNum( Tim_Man_t * p );
extern int Tim_ManPoNum( Tim_Man_t * p );
extern int Tim_ManBoxNum( Tim_Man_t * p );
extern int Tim_ManDelayTableNum( Tim_Man_t * p );
extern void Tim_ManSetDelayTables( Tim_Man_t * p, Vec_Ptr_t * vDelayTables );
extern void Tim_ManTravIdDisable( Tim_Man_t * p );
extern void Tim_ManTravIdEnable( Tim_Man_t * p );
/*=== timTime.c ===========================================================*/
extern void Tim_ManInitPiArrival( Tim_Man_t * p, int iPi, float Delay );
extern void Tim_ManInitPoRequired( Tim_Man_t * p, int iPo, float Delay );
extern void Tim_ManInitPiArrivalAll( Tim_Man_t * p, float Delay );
extern void Tim_ManInitPoRequiredAll( Tim_Man_t * p, float Delay );
extern void Tim_ManSetCoArrival( Tim_Man_t * p, int iCo, float Delay );
extern void Tim_ManSetCiRequired( Tim_Man_t * p, int iCi, float Delay );
extern void Tim_ManSetCoRequired( Tim_Man_t * p, int iCo, float Delay );
extern float Tim_ManGetCiArrival( Tim_Man_t * p, int iCi );
extern float Tim_ManGetCoRequired( Tim_Man_t * p, int iCo );
/*=== timTrav.c ===========================================================*/
extern void Tim_ManIncrementTravId( Tim_Man_t * p );
extern void Tim_ManSetCurrentTravIdBoxInputs( Tim_Man_t * p, int iBox );
extern void Tim_ManSetCurrentTravIdBoxOutputs( Tim_Man_t * p, int iBox );
extern void Tim_ManSetPreviousTravIdBoxInputs( Tim_Man_t * p, int iBox );
extern void Tim_ManSetPreviousTravIdBoxOutputs( Tim_Man_t * p, int iBox );
extern int Tim_ManIsCiTravIdCurrent( Tim_Man_t * p, int iCi );
extern int Tim_ManIsCoTravIdCurrent( Tim_Man_t * p, int iCo );
ABC_NAMESPACE_HEADER_END
#endif
////////////////////////////////////////////////////////////////////////
/// END OF FILE ///
////////////////////////////////////////////////////////////////////////
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