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#pragma ident	"%Z%%M%	%I%	%E% SMI"
28
29#include <stdlib.h>
30#include <strings.h>
31#include <umem.h>
32#include <poll.h>
33#include <errno.h>
34
35#include <fmd_alloc.h>
36#include <fmd_subr.h>
37#include <fmd_module.h>
38#include <fmd_scheme.h>
39#include <fmd.h>
40
41void *
42fmd_alloc(size_t size, int flags)
43{
44	void *data = umem_alloc(size, UMEM_DEFAULT);
45	uint_t try, lim, msecs;
46
47	if (data != NULL || size == 0 || !(flags & FMD_SLEEP))
48		return (data); /* in common cases just return result */
49
50	lim = fmd.d_alloc_tries;
51	msecs = fmd.d_alloc_msecs;
52
53	for (try = 0; data == NULL && try < lim; try++) {
54		(void) poll(NULL, 0, msecs);
55		msecs *= 10;
56		data = umem_alloc(size, UMEM_DEFAULT);
57	}
58
59	if (data == NULL) {
60		fmd_modhash_tryapply(fmd.d_mod_hash, fmd_module_trygc);
61		fmd_scheme_hash_trygc(fmd.d_schemes);
62		data = umem_alloc(size, UMEM_DEFAULT);
63	}
64
65	if (data == NULL)
66		fmd_panic("insufficient memory (%u bytes needed)\n", size);
67
68	return (data);
69}
70
71void *
72fmd_zalloc(size_t size, int flags)
73{
74	void *data = fmd_alloc(size, flags);
75
76	if (data != NULL)
77		bzero(data, size);
78
79	return (data);
80}
81
82void
83fmd_free(void *data, size_t size)
84{
85	umem_free(data, size);
86}
87