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/*
* Copyright 1997, Regents of the University of Minnesota
*
* memory.c
*
* This file contains routines that deal with memory allocation
*
* Started 2/24/96
* George
*
* $Id: memory.c,v 1.3 2003/07/30 18:37:59 karypis Exp $
*
*/
#include <parmetislib.h>
/*************************************************************************
* This function allocate various pools of memory
**************************************************************************/
void PreAllocateMemory(CtrlType *ctrl, GraphType *graph, WorkSpaceType *wspace)
{
wspace->nlarge = 2*graph->nedges;
wspace->maxcore = 8*graph->nedges+1;
wspace->core = idxmalloc(wspace->maxcore, "PreAllocateMemory: wspace->core");
wspace->pairs = (KeyValueType *)wspace->core;
wspace->indices = (idxtype *)(wspace->pairs + wspace->nlarge);
wspace->degrees = (EdgeType *)(wspace->indices + wspace->nlarge);
wspace->pv1 = idxmalloc(ctrl->nparts+ctrl->npes+1, "PreAllocateMemory: wspace->pv?");
wspace->pv2 = idxmalloc(ctrl->nparts+ctrl->npes+1, "PreAllocateMemory: wspace->pv?");
wspace->pv3 = idxmalloc(ctrl->nparts+ctrl->npes+1, "PreAllocateMemory: wspace->pv?");
wspace->pv4 = idxmalloc(ctrl->nparts+ctrl->npes+1, "PreAllocateMemory: wspace->pv?");
wspace->pepairs1 = (KeyValueType *)GKmalloc(sizeof(KeyValueType)*(ctrl->nparts+ctrl->npes+1), "PreAllocateMemory: wspace->pepairs?");
wspace->pepairs2 = (KeyValueType *)GKmalloc(sizeof(KeyValueType)*(ctrl->nparts+ctrl->npes+1), "PreAllocateMemory: wspace->pepairs?");
}
/*************************************************************************
* This function de-allocate various pools of memory
**************************************************************************/
void FreeWSpace(WorkSpaceType *wspace)
{
GKfree((void **)&wspace->core,
(void **)&wspace->pv1,
(void **)&wspace->pv2,
(void **)&wspace->pv3,
(void **)&wspace->pv4,
(void **)&wspace->pepairs1,
(void **)&wspace->pepairs2,
LTERM);
}
/*************************************************************************
* This function de-allocates memory allocated for the control structures
**************************************************************************/
void FreeCtrl(CtrlType *ctrl)
{
MPI_Comm_free(&(ctrl->gcomm));
}
/*************************************************************************
* This function creates a CoarseGraphType data structure and initializes
* the various fields
**************************************************************************/
GraphType *CreateGraph(void)
{
GraphType *graph;
graph = (GraphType *)GKmalloc(sizeof(GraphType), "CreateCoarseGraph: graph");
InitGraph(graph);
return graph;
}
/*************************************************************************
* This function creates a CoarseGraphType data structure and initializes
* the various fields
**************************************************************************/
void InitGraph(GraphType *graph)
{
graph->gnvtxs = graph->nvtxs = graph->nedges = graph->nsep = -1;
graph->nnbrs = graph->nrecv = graph->nsend = graph->nlocal = -1;
graph->xadj = graph->vwgt = graph->vsize = graph->adjncy = graph->adjwgt = NULL;
graph->nvwgt = NULL;
graph->vtxdist = NULL;
graph->match = graph->cmap = NULL;
graph->label = NULL;
graph->peind = NULL;
graph->sendptr = graph->sendind = graph->recvptr = graph->recvind = NULL;
graph->imap = NULL;
graph->pexadj = graph->peadjncy = graph->peadjloc = NULL;
graph->lperm = NULL;
graph->slens = graph->rlens = NULL;
graph->rcand = NULL;
graph->where = graph->home = graph->lpwgts = graph->gpwgts = NULL;
graph->lnpwgts = graph->gnpwgts = NULL;
graph->rinfo = NULL;
graph->nrinfo = NULL;
graph->sepind = NULL;
graph->coarser = graph->finer = NULL;
}
/*************************************************************************
* This function deallocates any memory stored in a graph
**************************************************************************/
void FreeGraph(GraphType *graph)
{
GKfree((void **)&graph->xadj,
(void **)&graph->vwgt,
(void **)&graph->nvwgt,
(void **)&graph->vsize,
(void **)&graph->adjncy,
(void **)&graph->adjwgt,
(void **)&graph->vtxdist,
(void **)&graph->match,
(void **)&graph->cmap,
(void **)&graph->lperm,
(void **)&graph->label,
(void **)&graph->where,
(void **)&graph->home,
(void **)&graph->rinfo,
(void **)&graph->nrinfo,
(void **)&graph->sepind,
(void **)&graph->lpwgts,
(void **)&graph->gpwgts,
(void **)&graph->lnpwgts,
(void **)&graph->gnpwgts,
(void **)&graph->peind,
(void **)&graph->sendptr,
(void **)&graph->sendind,
(void **)&graph->recvptr,
(void **)&graph->recvind,
(void **)&graph->imap,
(void **)&graph->rlens,
(void **)&graph->slens,
(void **)&graph->rcand,
(void **)&graph->pexadj,
(void **)&graph->peadjncy,
(void **)&graph->peadjloc,
LTERM);
free(graph);
}
/*************************************************************************
* This function deallocates any memory stored in a graph
**************************************************************************/
void FreeInitialGraphAndRemap(GraphType *graph, int wgtflag)
{
int i, nedges;
idxtype *adjncy, *imap;
nedges = graph->nedges;
adjncy = graph->adjncy;
imap = graph->imap;
if (imap != NULL) {
for (i=0; i<nedges; i++)
adjncy[i] = imap[adjncy[i]]; /* Apply local to global transformation */
}
/* Free Metis's things */
GKfree((void **)&graph->match,
(void **)&graph->cmap,
(void **)&graph->lperm,
(void **)&graph->where,
(void **)&graph->label,
(void **)&graph->rinfo,
(void **)&graph->nrinfo,
(void **)&graph->nvwgt,
(void **)&graph->lpwgts,
(void **)&graph->gpwgts,
(void **)&graph->lnpwgts,
(void **)&graph->gnpwgts,
(void **)&graph->sepind,
(void **)&graph->peind,
(void **)&graph->sendptr,
(void **)&graph->sendind,
(void **)&graph->recvptr,
(void **)&graph->recvind,
(void **)&graph->imap,
(void **)&graph->rlens,
(void **)&graph->slens,
(void **)&graph->rcand,
(void **)&graph->pexadj,
(void **)&graph->peadjncy,
(void **)&graph->peadjloc,
LTERM);
if ((wgtflag&2) == 0)
GKfree((void **)&graph->vwgt, (void **)&graph->vsize, LTERM);
if ((wgtflag&1) == 0)
GKfree((void **)&graph->adjwgt, LTERM);
free(graph);
}
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