osprey/be/cg/gra_mon/gra_lrange_subuniverse.cxx

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/*

  Copyright (C) 2000, 2001 Silicon Graphics, Inc.  All Rights Reserved.

  This program is free software; you can redistribute it and/or modify it
  under the terms of version 2 of the GNU General Public License as
  published by the Free Software Foundation.

  This program is distributed in the hope that it would be useful, but
  WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  

  Further, this software is distributed without any warranty that it is
  free of the rightful claim of any third person regarding infringement 
  or the like.  Any license provided herein, whether implied or 
  otherwise, applies only to this software file.  Patent licenses, if 
  any, provided herein do not apply to combinations of this program with 
  other software, or any other product whatsoever.  

  You should have received a copy of the GNU General Public License along
  with this program; if not, write the Free Software Foundation, Inc., 59
  Temple Place - Suite 330, Boston MA 02111-1307, USA.

  Contact information:  Silicon Graphics, Inc., 1600 Amphitheatre Pky,
  Mountain View, CA 94043, or:

  http://www.sgi.com

  For further information regarding this notice, see:

  http://oss.sgi.com/projects/GenInfo/NoticeExplan

*/

/*
 *  $Revision: 1.2 $
 *  $Date: 02/11/07 23:41:29-00:00 $
 *  $Author: fchow@keyresearch.com $
 *  $Source: /scratch/mee/2.4-65/kpro64-pending/be/cg/gra_mon/SCCS/s.gra_lrange_subuniverse.cxx $
 */

#ifdef USE_PCH
#include "cg_pch.h"
#endif // USE_PCH
#pragma hdrstop

#ifdef _KEEP_RCS_ID
static char *rcs_id = "$Source: /scratch/mee/2.4-65/kpro64-pending/be/cg/gra_mon/SCCS/s.gra_lrange_subuniverse.cxx $ $Revision: 1.2 $";
#endif

#include "defs.h"
#include "mempool.h"
#include "gra_bb.h"
#include "gra_trace.h"
#include "gra_lrange.h"
#include "gra_lrange_subuniverse.h"

LRANGE_SUB_MGR lrange_sub_mgr;

LRANGE*
INT_LRANGE_Sub(INT i, LRANGE_SET_SUBUNIVERSE *sub)
{
  return sub->Nth_Lrange(i);
}

// Used by lrange set code to map between integers and LRANGEs.
// Returns the unique LRANGE* associated with 'i' by the given
// subuniverse, 'sub'.  As a special case, returns
// LRANGE_SET_CHOOSE_FAILURE for -1.
LRANGE*
LRANGE_SET_SUBUNIVERSE::Nth_Lrange(INT i)
{
  DevAssert(i !=-1,("Choose failure passed to LRANGE_SET_SUBUNIVERSE::Nth_Lrange"));
  DevAssert(i < Count(), ("LRANGE_SET_SUBUNIVERSE index out of range %d vs %d",
            i, Count()));
  return Lranges()[i];
}

// Initialize this package.  No subuniverses may be created before the 
// package is initialized. 
void
LRANGE_SUB_MGR::Initialize(void)
{
  if ( ! pool_initialized ) {
    MEM_POOL_Initialize(&pool,"GRA lrange universe pool",FALSE);
    MEM_POOL_Push(&pool);
    pool_initialized = TRUE;
  }
}

// Finalize this package. All subuniverses are no longer valid after the 
// package is finalized.  All the memory allocated for LRANGE_SET_SUBUNIVERSEs 
// is returned when the package is finalized.
void
LRANGE_SUB_MGR::Finalize(void)
{
  if (pool_initialized) {
    MEM_POOL_Pop(&pool);
    MEM_POOL_Delete(&pool);
    pool_initialized = FALSE;
  }
}

// Create and return an LRANGE_SET_SUBUNIVERSE with space initially
// allocated for 'initial_size' elements.
LRANGE_SUBUNIVERSE*
LRANGE_SUB_MGR::Create(INT32 initial_size)
{
  LRANGE_SUBUNIVERSE* result = TYPE_MEM_POOL_ALLOC(LRANGE_SUBUNIVERSE, &pool);
  result->count = 0;
  result->alloc_size = initial_size;
  result->lranges = TYPE_MEM_POOL_ALLOC_N(LRANGE*,&pool,initial_size);
  return result;
}

// Add 'lrange' to 'subuniverse'.  It must not be a part of any
// other subuniverse.
void
LRANGE_SET_SUBUNIVERSE::Add(LRANGE* lrange)
{
  INT32 id = count++;

  if (count >= alloc_size) {
    // Too small, reallocate it to be twice as large.  That ought to fix it.
    INT32 new_alloc_size = alloc_size * 2;
    GRA_Trace_Memory_Realloc("LRANGE_SET_SUBUNIVERSE::Add()");

    lranges = TYPE_MEM_POOL_REALLOC_N(LRANGE*, &lrange_sub_mgr.pool, lranges, 
              alloc_size, new_alloc_size);
    alloc_size = new_alloc_size;
  }
  lrange->Id_Set(id);
  lranges[id] = lrange;
}

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