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 *
fmd_alloc(size_t size,int flags)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 *
fmd_zalloc(size_t size,int flags)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
fmd_free(void * data,size_t size)81 fmd_free(void *data, size_t size)
82 {
83 umem_free(data, size);
84 }
85