1 /*********************************************************************** 2 * * 3 * This software is part of the ast package * 4 * Copyright (c) 1985-2011 AT&T Intellectual Property * 5 * and is licensed under the * 6 * Eclipse Public License, Version 1.0 * 7 * by AT&T Intellectual Property * 8 * * 9 * A copy of the License is available at * 10 * http://www.eclipse.org/org/documents/epl-v10.html * 11 * (with md5 checksum b35adb5213ca9657e911e9befb180842) * 12 * * 13 * Information and Software Systems Research * 14 * AT&T Research * 15 * Florham Park NJ * 16 * * 17 * Glenn Fowler <gsf@research.att.com> * 18 * David Korn <dgk@research.att.com> * 19 * Phong Vo <kpv@research.att.com> * 20 * * 21 ***********************************************************************/ 22 #include <vmalloc.h> 23 24 /* 25 * vm open/close/resize - a handy default for discipline memory functions 26 * 27 * vmgetmem(0,0,0) open new region 28 * vmgetmem(r,0,0) free region 29 * vmgetmem(r,0,n) allocate n bytes initialized to 0 30 * vmgetmem(r,p,0) free p 31 * vmgetmem(r,p,n) realloc p to n bytes 32 * 33 * Written by Glenn S. Fowler. 34 */ 35 36 #if __STD_C 37 Void_t* vmgetmem(Vmalloc_t* vm, Void_t* data, size_t size) 38 #else 39 Void_t* vmgetmem(vm, data, size) 40 Vmalloc_t* vm; 41 Void_t* data; 42 size_t size; 43 #endif 44 { 45 if (!vm) 46 return vmopen(Vmdcheap, Vmbest, 0); 47 if (data || size) 48 return vmresize(vm, data, size, VM_RSMOVE|VM_RSCOPY|VM_RSZERO); 49 vmclose(vm); 50 return 0; 51 } 52