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macgc.c

/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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 * The Original Code is the Netscape Portable Runtime (NSPR).
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 * The Initial Developer of the Original Code is
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#include "primpl.h"
#include "MacMemAllocator.h"

void _MD_InitGC() {}

void *_MD_GrowGCHeap(size_t *sizep)
{
      void              *heapPtr = NULL;
      size_t                  heapSize = *sizep;
      
      // In previous versions of this code we tried to allocate GC heaps from the application
      // heap.  In the 4.0 application, we try to keep our app heap allications to a minimum
      // and instead go through our own memory allocation routines.
      heapPtr = malloc(heapSize);
      
      if (heapPtr == NULL) {        
            FreeMemoryStats         stats;
            
            memtotal(heapSize, &stats);         // How much can we allcoate?
            
            if (stats.maxBlockSize < heapSize)
                  heapSize = stats.maxBlockSize;
            
            heapPtr = malloc(heapSize);
            
            if (heapPtr == NULL)                // Now we're hurting
                  heapSize = 0;
      }
      
      *sizep = heapSize;
      return heapPtr;
}


void _MD_FreeGCSegment(void *base, int32 /* len */)
{
      free(base);
}

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