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
|
/*
* %CopyrightBegin%
*
* Copyright Ericsson AB 2013. All Rights Reserved.
*
* The contents of this file are subject to the Erlang Public License,
* Version 1.1, (the "License"); you may not use this file except in
* compliance with the License. You should have received a copy of the
* Erlang Public License along with this software. If not, it can be
* retrieved online at http://www.erlang.org/.
*
* Software distributed under the License is distributed on an "AS IS"
* basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
* the License for the specific language governing rights and limitations
* under the License.
*
* %CopyrightEnd%
*/
#ifndef ERL_MMAP_H__
#define ERL_MMAP_H__
#include "sys.h"
#define ERTS_MMAP_SUPERALIGNED_BITS (18)
/* Affects hard limits for sbct and lmbcs documented in erts_alloc.xml */
#define ERTS_MMAPFLG_OS_ONLY (((Uint32) 1) << 0)
#define ERTS_MMAPFLG_SUPERCARRIER_ONLY (((Uint32) 1) << 1)
#define ERTS_MMAPFLG_SUPERALIGNED (((Uint32) 1) << 2)
#define ERTS_HAVE_ERTS_OS_MMAP (1 << 0)
#define ERTS_HAVE_ERTS_SUPERCARRIER_MMAP (1 << 1)
extern int erts_have_erts_mmap;
extern UWord erts_page_inv_mask;
typedef struct {
struct {
char *start;
char *end;
} virtual_range;
struct {
char *start;
char *end;
} predefined_area;
UWord scs; /* super carrier size */
int sco; /* super carrier only? */
Uint scmgc; /* super carrier: max guaranteed (number of) carriers */
int scrpm;
}ErtsMMapInit;
#define ERTS_MMAP_INIT_DEFAULT_INITER \
{{NULL, NULL}, {NULL, NULL}, 0, 1, (1 << 16), 1}
void *erts_mmap(Uint32 flags, UWord *sizep);
void erts_munmap(Uint32 flags, void *ptr, UWord size);
void *erts_mremap(Uint32 flags, void *ptr, UWord old_size, UWord *sizep);
int erts_mmap_in_supercarrier(void *ptr);
void erts_mmap_init(ErtsMMapInit*);
struct erts_mmap_info_struct
{
UWord sizes[6];
UWord segs[6];
UWord os_used;
};
Eterm erts_mmap_info(int *print_to_p, void *print_to_arg,
Eterm** hpp, Uint* szp, struct erts_mmap_info_struct*);
Eterm erts_mmap_info_options(char *prefix, int *print_to_p, void *print_to_arg,
Uint **hpp, Uint *szp);
struct process;
Eterm erts_mmap_debug_info(struct process*);
#define ERTS_SUPERALIGNED_SIZE \
(1 << ERTS_MMAP_SUPERALIGNED_BITS)
#define ERTS_INV_SUPERALIGNED_MASK \
((UWord) (ERTS_SUPERALIGNED_SIZE - 1))
#define ERTS_SUPERALIGNED_MASK \
(~ERTS_INV_SUPERALIGNED_MASK)
#define ERTS_SUPERALIGNED_FLOOR(X) \
(((UWord) (X)) & ERTS_SUPERALIGNED_MASK)
#define ERTS_SUPERALIGNED_CEILING(X) \
ERTS_SUPERALIGNED_FLOOR((X) + ERTS_INV_SUPERALIGNED_MASK)
#define ERTS_IS_SUPERALIGNED(X) \
(((UWord) (X) & ERTS_INV_SUPERALIGNED_MASK) == 0)
#define ERTS_INV_PAGEALIGNED_MASK \
(erts_page_inv_mask)
#define ERTS_PAGEALIGNED_MASK \
(~ERTS_INV_PAGEALIGNED_MASK)
#define ERTS_PAGEALIGNED_FLOOR(X) \
(((UWord) (X)) & ERTS_PAGEALIGNED_MASK)
#define ERTS_PAGEALIGNED_CEILING(X) \
ERTS_PAGEALIGNED_FLOOR((X) + ERTS_INV_PAGEALIGNED_MASK)
#define ERTS_IS_PAGEALIGNED(X) \
(((UWord) (X) & ERTS_INV_PAGEALIGNED_MASK) == 0)
#define ERTS_PAGEALIGNED_SIZE \
(ERTS_INV_PAGEALIGNED_MASK + 1)
#ifndef HAVE_MMAP
# define HAVE_MMAP 0
#endif
#ifndef HAVE_MREMAP
# define HAVE_MREMAP 0
#endif
#if HAVE_MMAP
# define ERTS_HAVE_OS_MMAP 1
# define ERTS_HAVE_GENUINE_OS_MMAP 1
# if HAVE_MREMAP
# define ERTS_HAVE_OS_MREMAP 1
# endif
# if defined(MAP_FIXED) && defined(MAP_NORESERVE)
# define ERTS_HAVE_OS_PHYSICAL_MEMORY_RESERVATION 1
# endif
#endif
#ifndef HAVE_VIRTUALALLOC
# define HAVE_VIRTUALALLOC 0
#endif
#if HAVE_VIRTUALALLOC
# define ERTS_HAVE_OS_MMAP 1
#endif
/*#define HARD_DEBUG_MSEG*/
#ifdef HARD_DEBUG_MSEG
# define HARD_DBG_INSERT_MSEG hard_dbg_insert_mseg
# define HARD_DBG_REMOVE_MSEG hard_dbg_remove_mseg
void hard_dbg_insert_mseg(void* seg, UWord sz);
void hard_dbg_remove_mseg(void* seg, UWord sz);
#else
# define HARD_DBG_INSERT_MSEG(SEG,SZ)
# define HARD_DBG_REMOVE_MSEG(SEG,SZ)
#endif
#endif /* ERL_MMAP_H__ */
|
