1/* 2 * Copyright (c) 1999, 2000-2001 Apple Computer, Inc. All rights reserved. 3 * 4 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ 5 * 6 * This file contains Original Code and/or Modifications of Original Code 7 * as defined in and that are subject to the Apple Public Source License 8 * Version 2.0 (the 'License'). You may not use this file except in 9 * compliance with the License. The rights granted to you under the License 10 * may not be used to create, or enable the creation or redistribution of, 11 * unlawful or unlicensed copies of an Apple operating system, or to 12 * circumvent, violate, or enable the circumvention or violation of, any 13 * terms of an Apple operating system software license agreement. 14 * 15 * Please obtain a copy of the License at 16 * http://www.opensource.apple.com/apsl/ and read it before using this file. 17 * 18 * The Original Code and all software distributed under the License are 19 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 20 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, 21 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, 22 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 23 * Please see the License for the specific language governing rights and 24 * limitations under the License. 25 * 26 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ 27 */ 28 29/* 30 File: yarrowUtils.c 31 32 Contains: Misc. utility functions. 33 34 Written by: Doug Mitchell 35 36 Copyright: (c) 2000 by Apple Computer, Inc., all rights reserved. 37 38 Change History (most recent first): 39 40 02/29/00 dpm Created. 41 42*/ 43 44#include "dev/random/YarrowCoreLib/include/yarrowUtils.h" 45#include <string.h> 46 47void 48trashMemory(void* mem, int len) 49/* This function should only be used on data in RAM */ 50{ 51 if(len == 0) { 52 /* some memsets really don't like this */ 53 return; 54 } 55 56 /* Cycle a bit just in case it is one of those weird memory units */ 57 /* No, I don't know which units those would be */ 58 memset(mem,0x00,len); 59 memset(mem,0xFF,len); 60 memset(mem,0x00,len); 61} 62 63 64