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 * Copyright 2007 Sun Microsystems, Inc.  All rights reserved.
23 * Use is subject to license terms.
24 *
25 * alloc.c -- memory allocation wrapper functions, replacable in more
26 * constrained environments, such as within a DE.
27 */
28
29#pragma ident	"%Z%%M%	%I%	%E% SMI"
30
31#include <stdlib.h>
32#include <string.h>
33
34#include "alloc.h"
35#include "out.h"
36#include "stats.h"
37
38static struct stats *Malloctotal;
39static struct stats *Malloccount;
40
41void
42alloc_init(void)
43{
44	Malloctotal = stats_new_counter("alloc.total", "bytes allocated", 1);
45	Malloccount = stats_new_counter("alloc.calls", "total calls", 1);
46}
47
48void
49alloc_fini(void)
50{
51	struct stats *mt, *mc;
52
53	mt = Malloctotal;
54	mc = Malloccount;
55
56	Malloctotal = NULL;
57	Malloccount = NULL;
58
59	stats_delete(mt);
60	stats_delete(mc);
61}
62
63/*
64 * alloc_malloc -- a malloc() with checks
65 *
66 * this routine is typically called via the MALLOC() macro in alloc.h
67 */
68
69void *
70alloc_malloc(size_t nbytes, const char *fname, int line)
71{
72	void *retval = malloc(nbytes);
73
74	if (retval == NULL)
75		outfl(O_DIE, fname, line, "malloc: out of memory");
76
77	if (Malloctotal)
78		stats_counter_add(Malloctotal, nbytes);
79
80	if (Malloccount)
81		stats_counter_bump(Malloccount);
82
83	return (retval);
84}
85
86/*
87 * alloc_realloc -- a realloc() with checks
88 *
89 * this routine is typically called via the REALLOC() macro in alloc.h
90 */
91void *
92alloc_realloc(void *ptr, size_t nbytes, const char *fname, int line)
93{
94	void *retval = realloc(ptr, nbytes);
95
96	if (retval == NULL)
97		out(O_DIE, fname, line, "realloc: out of memory");
98
99	return (retval);
100}
101
102/*
103 * alloc_strdup -- a strdup() with checks
104 *
105 * this routine is typically called via the STRDUP() macro in alloc.h
106 */
107char *
108alloc_strdup(const char *ptr, const char *fname, int line)
109{
110	char *retval = strdup(ptr);
111
112	if (retval == NULL)
113		outfl(O_DIE, fname, line, "strdup: out of memory");
114
115	return (retval);
116}
117
118/*
119 * alloc_free -- a free() with checks
120 *
121 * this routine is typically called via the FREE() macro in alloc.h
122 */
123/*ARGSUSED1*/
124void
125alloc_free(void *ptr, const char *fname, int line)
126{
127	/* nothing to check in this version */
128	free(ptr);
129}
130
131/*
132 * variants that don't maintain size in header - saves space
133 */
134void *
135alloc_xmalloc(size_t nbytes)
136{
137	void *retval;
138
139	retval = malloc(nbytes);
140	if (retval == NULL)
141		out(O_DIE, "malloc: out of memory");
142	if (Malloctotal)
143		stats_counter_add(Malloctotal, nbytes);
144	if (Malloccount)
145		stats_counter_bump(Malloccount);
146	return (retval);
147}
148
149/*ARGSUSED*/
150void
151alloc_xfree(void *ptr, size_t size)
152{
153	free(ptr);
154}
155