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, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright 2004 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #include <stdlib.h> 28 #include <strings.h> 29 #include <umem.h> 30 #include <poll.h> 31 #include <errno.h> 32 33 #include <fmd_alloc.h> 34 #include <fmd_subr.h> 35 #include <fmd_module.h> 36 #include <fmd_scheme.h> 37 #include <fmd.h> 38 39 void * 40 fmd_alloc(size_t size, int flags) 41 { 42 void *data = umem_alloc(size, UMEM_DEFAULT); 43 uint_t try, lim, msecs; 44 45 if (data != NULL || size == 0 || !(flags & FMD_SLEEP)) 46 return (data); /* in common cases just return result */ 47 48 lim = fmd.d_alloc_tries; 49 msecs = fmd.d_alloc_msecs; 50 51 for (try = 0; data == NULL && try < lim; try++) { 52 (void) poll(NULL, 0, msecs); 53 msecs *= 10; 54 data = umem_alloc(size, UMEM_DEFAULT); 55 } 56 57 if (data == NULL) { 58 fmd_modhash_tryapply(fmd.d_mod_hash, fmd_module_trygc); 59 fmd_scheme_hash_trygc(fmd.d_schemes); 60 data = umem_alloc(size, UMEM_DEFAULT); 61 } 62 63 if (data == NULL) 64 fmd_panic("insufficient memory (%u bytes needed)\n", size); 65 66 return (data); 67 } 68 69 void * 70 fmd_zalloc(size_t size, int flags) 71 { 72 void *data = fmd_alloc(size, flags); 73 74 if (data != NULL) 75 bzero(data, size); 76 77 return (data); 78 } 79 80 void 81 fmd_free(void *data, size_t size) 82 { 83 umem_free(data, size); 84 } 85