xref: /freebsd/include/malloc_np.h (revision f5e9c916afed4a948fe5c03bfaee038d165e12ab)
1  /*-
2   * Copyright (C) 2006 Jason Evans <jasone@FreeBSD.org>.
3   * All rights reserved.
4   *
5   * Redistribution and use in source and binary forms, with or without
6   * modification, are permitted provided that the following conditions
7   * are met:
8   * 1. Redistributions of source code must retain the above copyright
9   *    notice(s), this list of conditions and the following disclaimer as
10   *    the first lines of this file unmodified other than the possible
11   *    addition of one or more copyright notices.
12   * 2. Redistributions in binary form must reproduce the above copyright
13   *    notice(s), this list of conditions and the following disclaimer in
14   *    the documentation and/or other materials provided with the
15   *    distribution.
16   *
17   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER(S) ``AS IS'' AND ANY
18   * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19   * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
20   * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) BE
21   * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
22   * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
23   * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
24   * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
25   * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
26   * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
27   * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28   *
29   * $FreeBSD$
30   */
31  
32  #ifndef _MALLOC_NP_H_
33  #define	_MALLOC_NP_H_
34  #include <sys/cdefs.h>
35  #include <sys/types.h>
36  #include <stdbool.h>
37  #include <strings.h>
38  
39  __BEGIN_DECLS
40  typedef void *(chunk_alloc_t)(void *, size_t, size_t, bool *, bool *, unsigned);
41  typedef bool (chunk_dalloc_t)(void *, size_t, bool, unsigned);
42  typedef bool (chunk_commit_t)(void *, size_t, size_t, size_t, unsigned);
43  typedef bool (chunk_decommit_t)(void *, size_t, size_t, size_t, unsigned);
44  typedef bool (chunk_purge_t)(void *, size_t, size_t, size_t, unsigned);
45  typedef bool (chunk_split_t)(void *, size_t, size_t, size_t, bool, unsigned);
46  typedef bool (chunk_merge_t)(void *, size_t, void *, size_t, bool, unsigned);
47  typedef struct {
48  	chunk_alloc_t		*alloc;
49  	chunk_dalloc_t		*dalloc;
50  	chunk_commit_t		*commit;
51  	chunk_decommit_t	*decommit;
52  	chunk_purge_t		*purge;
53  	chunk_split_t		*split;
54  	chunk_merge_t		*merge;
55  } chunk_hooks_t;
56  
57  size_t	malloc_usable_size(const void *ptr);
58  
59  void	malloc_stats_print(void (*write_cb)(void *, const char *),
60      void *cbopaque, const char *opts);
61  int	mallctl(const char *name, void *oldp, size_t *oldlenp, void *newp,
62      size_t newlen);
63  int	mallctlnametomib(const char *name, size_t *mibp, size_t *miblenp);
64  int	mallctlbymib(const size_t *mib, size_t miblen, void *oldp,
65      size_t *oldlenp, void *newp, size_t newlen);
66  
67  #define	MALLOCX_LG_ALIGN(la)	(la)
68  #define	MALLOCX_ALIGN(a)	(ffsl(a)-1)
69  #define	MALLOCX_ZERO		((int)0x40)
70  #define	MALLOCX_TCACHE(tc)	((int)(((tc)+2) << 8))
71  #define	MALLOCX_TCACHE_NONE	MALLOCX_TCACHE(-1)
72  #define	MALLOCX_ARENA(a)	((int)(((a)+1) << 20))
73  
74  void	*mallocx(size_t size, int flags);
75  void	*rallocx(void *ptr, size_t size, int flags);
76  size_t	xallocx(void *ptr, size_t size, size_t extra, int flags);
77  size_t	sallocx(const void *ptr, int flags);
78  void	dallocx(void *ptr, int flags);
79  void	sdallocx(void *ptr, size_t size, int flags);
80  size_t	nallocx(size_t size, int flags);
81  
82  void *	__calloc(size_t number, size_t size) __malloc_like;
83  void *	__malloc(size_t size) __malloc_like;
84  void *	__realloc(void *ptr, size_t size);
85  void	__free(void *ptr);
86  int	__posix_memalign(void **ptr, size_t alignment, size_t size);
87  void	*__aligned_alloc(size_t alignment, size_t size);
88  size_t	__malloc_usable_size(const void *ptr);
89  void	__malloc_stats_print(void (*write_cb)(void *, const char *),
90      void *cbopaque, const char *opts);
91  int	__mallctl(const char *name, void *oldp, size_t *oldlenp, void *newp,
92      size_t newlen);
93  int	__mallctlnametomib(const char *name, size_t *mibp, size_t *miblenp);
94  int	__mallctlbymib(const size_t *mib, size_t miblen, void *oldp,
95      size_t *oldlenp, void *newp, size_t newlen);
96  void	*__mallocx(size_t size, int flags);
97  void	*__rallocx(void *ptr, size_t size, int flags);
98  size_t	__xallocx(void *ptr, size_t size, size_t extra, int flags);
99  size_t	__sallocx(const void *ptr, int flags);
100  void	__dallocx(void *ptr, int flags);
101  void	__sdallocx(void *ptr, size_t size, int flags);
102  size_t	__nallocx(size_t size, int flags);
103  __END_DECLS
104  
105  #endif /* _MALLOC_NP_H_ */
106