1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 22 /* 23 * Copyright 2006 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #pragma ident "%Z%%M% %I% %E% SMI" 28 29 /* 30 * ASSERTION: 31 * Checks that setting "bufresize" to "auto" will cause buffer 32 * allocation to succeed, even for large principal buffer sizes. 33 * 34 * SECTION: Buffers and Buffering/Buffer Resizing Policy; 35 * Options and Tunables/bufsize; 36 * Options and Tunables/bufresize 37 * 38 * NOTES: 39 * On some small memory machines, this test may consume so much memory 40 * that it induces memory allocation failure in the dtrace library. This 41 * will manifest itself as an error like one of the following: 42 * 43 * dtrace: processing aborted: Memory allocation failure 44 * dtrace: could not enable tracing: Memory allocation failure 45 * 46 * These actually indicate that the test performed as expected; failures 47 * of the above nature should therefore be ignored. If 32-bit libdtrace 48 * is used to execute this test on a 64-bit kernel, the failure mode 49 * becomes exceedingly likely because the kernel may be able to allocate 50 * a huge hunk of memory that then requires the client to match it with 51 * a malloc that exhausts the remainder of its 4GB address space. For 52 * this reason, we no-op the test for 32-bit clients using an ifdef. 53 */ 54 55 #pragma D option bufresize=auto 56 57 #ifdef __SUNW_D_64 58 #pragma D option bufsize=100t 59 #endif 60 61 BEGIN 62 { 63 exit(0); 64 } 65