da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin/***********************************************************************
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin* *
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin* This software is part of the ast package *
3e14f97f673e8a630f076077de35afdd43dc1587Roger A. Faulkner* Copyright (c) 1985-2010 AT&T Intellectual Property *
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin* and is licensed under the *
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin* Common Public License, Version 1.0 *
7c2fbfb345896881c631598ee3852ce9ce33fb07April Chin* by AT&T Intellectual Property *
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin* *
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin* A copy of the License is available at *
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin* http://www.opensource.org/licenses/cpl1.0.txt *
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin* (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9) *
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin* *
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin* Information and Software Systems Research *
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin* AT&T Research *
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin* Florham Park NJ *
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin* *
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin* Glenn Fowler <gsf@research.att.com> *
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin* David Korn <dgk@research.att.com> *
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin* Phong Vo <kpv@research.att.com> *
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin* *
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin***********************************************************************/
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin#if defined(_UWIN) && defined(_BLD_ast)
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chinvoid _STUB_vmdcheap(){}
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin#else
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin#include "vmhdr.h"
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin/* A discipline to get memory from the heap.
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin**
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin** Written by Kiem-Phong Vo, kpv@research.att.com, 01/16/94.
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin*/
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin#if __STD_C
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chinstatic Void_t* heapmem(Vmalloc_t* vm, Void_t* caddr,
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin size_t csize, size_t nsize,
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin Vmdisc_t* disc)
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin#else
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chinstatic Void_t* heapmem(vm, caddr, csize, nsize, disc)
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chinVmalloc_t* vm; /* region doing allocation from */
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chinVoid_t* caddr; /* current low address */
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chinsize_t csize; /* current size */
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chinsize_t nsize; /* new size */
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chinVmdisc_t* disc; /* discipline structure */
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin#endif
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin{
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin NOTUSED(vm);
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin NOTUSED(disc);
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin if(csize == 0)
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin return vmalloc(Vmheap,nsize);
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin else if(nsize == 0)
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin return vmfree(Vmheap,caddr) >= 0 ? caddr : NIL(Void_t*);
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin else return vmresize(Vmheap,caddr,nsize,0);
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin}
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chinstatic Vmdisc_t _Vmdcheap = { heapmem, NIL(Vmexcept_f), 0 };
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin__DEFINE__(Vmdisc_t*,Vmdcheap,&_Vmdcheap);
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin#ifdef NoF
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chinNoF(vmdcheap)
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin#endif
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin#endif