1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
|
/* Prototypes and definition for malloc implementation.
Copyright (C) 1996, 1997 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If not,
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#ifndef _MALLOC_H
#define _MALLOC_H 1
/*
`ptmalloc', a malloc implementation for multiple threads without
lock contention, by Wolfram Gloger <wmglo@dent.med.uni-muenchen.de>.
See the files `ptmalloc.c' or `COPYRIGHT' for copying conditions.
VERSION 2.6.4-pt Wed Dec 4 00:35:54 MET 1996
This work is mainly derived from malloc-2.6.4 by Doug Lea
<dl@cs.oswego.edu>, which is available from:
ftp://g.oswego.edu/pub/misc/malloc.c
This trimmed-down header file only provides function prototypes and
the exported data structures. For more detailed function
descriptions and compile-time options, see the source file
`ptmalloc.c'.
*/
#if defined(__STDC__) || defined (__cplusplus)
#include <stddef.h>
#define __malloc_ptr_t void *
#else
#undef size_t
#define size_t unsigned int
#undef ptrdiff_t
#define ptrdiff_t int
#define __malloc_ptr_t char *
#endif
#ifdef _LIBC
/* Used by GNU libc internals. */
#define __malloc_size_t size_t
#define __malloc_ptrdiff_t ptrdiff_t
#endif
#if defined (__STDC__) || defined (__cplusplus) || defined (__GNUC__)
#define __MALLOC_P(args) args
#else
#define __MALLOC_P(args) ()
#endif
#ifndef NULL
#ifdef __cplusplus
#define NULL 0
#else
#define NULL ((__malloc_ptr_t) 0)
#endif
#endif
#ifdef __cplusplus
extern "C" {
#endif
/* Nonzero if the malloc is already initialized. */
#ifdef _LIBC
/* In the GNU libc we rename the global variable
`__malloc_initialized' to `__libc_malloc_initialized'. */
#define __malloc_initialized __libc_malloc_initialized
#endif
extern int __malloc_initialized;
/* Initialize global configuration. Not needed with GNU libc. */
#ifndef __GLIBC__
extern void ptmalloc_init __MALLOC_P ((void));
#endif
/* Allocate SIZE bytes of memory. */
extern __malloc_ptr_t malloc __MALLOC_P ((size_t __size));
/* Allocate NMEMB elements of SIZE bytes each, all initialized to 0. */
extern __malloc_ptr_t calloc __MALLOC_P ((size_t __nmemb, size_t __size));
/* Re-allocate the previously allocated block in __ptr, making the new
block SIZE bytes long. */
extern __malloc_ptr_t realloc __MALLOC_P ((__malloc_ptr_t __ptr, size_t __size));
/* Free a block allocated by `malloc', `realloc' or `calloc'. */
extern void free __MALLOC_P ((__malloc_ptr_t __ptr));
/* Free a block allocated by `calloc'. */
extern void cfree __MALLOC_P ((__malloc_ptr_t __ptr));
/* Allocate SIZE bytes allocated to ALIGNMENT bytes. */
extern __malloc_ptr_t memalign __MALLOC_P ((size_t __alignment, size_t __size));
/* Allocate SIZE bytes on a page boundary. */
extern __malloc_ptr_t valloc __MALLOC_P ((size_t __size));
/* Equivalent to valloc(minimum-page-that-holds(n)), that is, round up
__size to nearest pagesize. */
extern __malloc_ptr_t pvalloc __MALLOC_P ((size_t __size));
/* Underlying allocation function; successive calls should return
contiguous pieces of memory. */
extern __malloc_ptr_t (*__morecore) __MALLOC_P ((ptrdiff_t __size));
/* Default value of `__morecore'. */
extern __malloc_ptr_t __default_morecore __MALLOC_P ((ptrdiff_t __size));
/* SVID2/XPG mallinfo structure */
struct mallinfo {
int arena; /* total space allocated from system */
int ordblks; /* number of non-inuse chunks */
int smblks; /* unused -- always zero */
int hblks; /* number of mmapped regions */
int hblkhd; /* total space in mmapped regions */
int usmblks; /* unused -- always zero */
int fsmblks; /* unused -- always zero */
int uordblks; /* total allocated space */
int fordblks; /* total non-inuse space */
int keepcost; /* top-most, releasable (via malloc_trim) space */
};
/* Returns a copy of the updated current mallinfo. */
extern struct mallinfo mallinfo __MALLOC_P ((void));
/* SVID2/XPG mallopt options */
#ifndef M_MXFAST
#define M_MXFAST 1 /* UNUSED in this malloc */
#endif
#ifndef M_NLBLKS
#define M_NLBLKS 2 /* UNUSED in this malloc */
#endif
#ifndef M_GRAIN
#define M_GRAIN 3 /* UNUSED in this malloc */
#endif
#ifndef M_KEEP
#define M_KEEP 4 /* UNUSED in this malloc */
#endif
/* mallopt options that actually do something */
#define M_TRIM_THRESHOLD -1
#define M_TOP_PAD -2
#define M_MMAP_THRESHOLD -3
#define M_MMAP_MAX -4
#define M_CHECK_ACTION -5
/* General SVID/XPG interface to tunable parameters. */
extern int mallopt __MALLOC_P ((int __param, int __val));
/* Release all but __pad bytes of freed top-most memory back to the
system. Return 1 if successful, else 0. */
extern int malloc_trim __MALLOC_P ((size_t __pad));
/* Report the number of usable allocated bytes associated with allocated
chunk __ptr. */
extern size_t malloc_usable_size __MALLOC_P ((__malloc_ptr_t __ptr));
/* Prints brief summary statistics on stderr. */
extern void malloc_stats __MALLOC_P ((void));
/* Record the state of all malloc variables in an opaque data structure. */
extern __malloc_ptr_t malloc_get_state __MALLOC_P ((void));
/* Restore the state of all malloc variables from data obtained with
malloc_get_state(). */
extern int malloc_set_state __MALLOC_P ((__malloc_ptr_t __ptr));
#if defined(__GLIBC__) || defined(MALLOC_HOOKS)
/* Hooks for debugging versions. */
extern void (*__malloc_initialize_hook) __MALLOC_P ((void));
extern void (*__free_hook) __MALLOC_P ((__malloc_ptr_t __ptr));
extern __malloc_ptr_t (*__malloc_hook) __MALLOC_P ((size_t __size));
extern __malloc_ptr_t (*__realloc_hook) __MALLOC_P ((__malloc_ptr_t __ptr,
size_t __size));
extern __malloc_ptr_t (*__memalign_hook) __MALLOC_P ((size_t __size,
size_t __alignment));
extern void (*__after_morecore_hook) __MALLOC_P ((void));
/* Activate a standard set of debugging hooks. */
extern void __malloc_check_init __MALLOC_P ((void));
#endif
#ifdef __cplusplus
}; /* end of extern "C" */
#endif
#endif /* malloc.h */
|
GitWeb