anet-checkins

[Benoit N. <be...@us...>]

Update of /cvsroot/anet/ANet/ANet_Daemon/Core
In directory usw-pr-cvs1:/tmp/cvs-serv30333/Core

Added Files:
	Memory.c 
Log Message:
Added Memory Management (MM) Stubs

--- NEW FILE: Memory.c ---
/******************************************************************
        ANet_Daemon/Core/Memory.c
        Memory management for the run-time wrapper of the daemon.
        
        Part of the ANet project.
        
        Distributed under GPL: http://www.gnu.org/copyleft/gpl.html
******************************************************************/

#include "Memory.h"
#include <stdlib.h>

/*
  Current memory format:
  ANetMemoryTag is a memory location.
  The first 4 bytes are the size of the block.
  The remaining bytes is the data itself.
*/

ANetMemoryTag NewMemoryBlock(UInt32 size, UInt32 flags)
{
  // Soft-limit of 500MB assumed
  UInt32 *mem;
  if (size & 0xC0000000)
  {
    return (ANetMemoryTag)(0);
  }
  mem = (UInt32*)(malloc(size + sizeof(UInt32)));
  mem[0] = size;
  return (ANetMemoryTag)(mem);
}

UInt32 DeleteMemoryBlock(ANetMemoryTag tag)
{
  if (!tag)
    return 1;
  free((char*)(tag));
  return 0;
}

UInt32 GetMemoryBlockSize(ANetMemoryTag tag)
{
  return *(UInt32*)(tag);
}

UInt32 ResolveMemoryTag(ANetMemoryTag tag, UInt8 **ptr)
{
  // Soft-limit of 500MB assumed
  if (!tag)
    return 1;
  if (!ptr)
    return 1;
  if (*((UInt32*)(tag)) & 0xC0000000)
    return 1;
  *ptr = (UInt8*)((UInt32*)(tag) + 1);
  return 0;
}