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
|
/*
* %CopyrightBegin%
*
* Copyright Ericsson AB 1996-2010. 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_VM_H__
#define __ERL_VM_H__
/* #define ERTS_OPCODE_COUNTER_SUPPORT */
/* FORCE_HEAP_FRAGS:
* Debug provocation to make HAlloc always create heap fragments (if allowed)
* even if there is room on heap.
*/
/* #define FORCE_HEAP_FRAGS */
#if defined(HYBRID)
/* # define CHECK_FOR_HOLES */
#endif
#if defined(DEBUG) && !defined(CHECK_FOR_HOLES) && !defined(__WIN32__)
# define CHECK_FOR_HOLES
#endif
#if defined(HYBRID)
/* # define INCREMENTAL 1 */ /* Incremental garbage collection */
/* # define INC_TIME_BASED 1 */ /* Time-based incremental GC (vs Work-based) */
#endif
#define BEAM 1
#define EMULATOR "BEAM"
#define SEQ_TRACE 1
#define CONTEXT_REDS 2000 /* Swap process out after this number */
#define MAX_ARG 256 /* Max number of arguments allowed */
#define MAX_REG 1024 /* Max number of x(N) registers used */
/*
* The new arithmetic operations need some extra X registers in the register array.
*/
#define ERTS_X_REGS_ALLOCATED (MAX_REG+2)
#define INPUT_REDUCTIONS (2 * CONTEXT_REDS)
#define H_DEFAULT_SIZE 233 /* default (heap + stack) min size */
#define VH_DEFAULT_SIZE 32768 /* default virtual (bin) heap min size (words) */
#ifdef HYBRID
# define SH_DEFAULT_SIZE 2629425 /* default message area min size */
#endif
#ifdef INCREMENTAL
# define INC_NoPAGES 256 /* Number of pages in the old generation */
# define INC_PAGESIZE 32768 /* The size of each page */
# define INC_STORAGE_SIZE 1024 /* The size of gray stack and similar */
#endif
#define CP_SIZE 1
#define ErtsHAllocLockCheck(P) \
ERTS_SMP_LC_ASSERT((ERTS_PROC_LOCK_MAIN & erts_proc_lc_my_proc_locks((P))) \
|| ((P)->scheduler_data \
&& (P) == (P)->scheduler_data->match_pseudo_process) \
|| erts_is_system_blocked(0))
#ifdef DEBUG
/*
* Debug HAlloc that initialize all memory to bad things.
*
* To get information about where memory is allocated, insert the two
* lines below directly after the memset line and use the flag +va.
*
VERBOSE(DEBUG_ALLOCATION,("HAlloc @ 0x%08lx (%d) %s:%d\n", \
(unsigned long)HEAP_TOP(p),(sz),__FILE__,__LINE__)), \
*/
# ifdef CHECK_FOR_HOLES
# define INIT_HEAP_MEM(p,sz) erts_set_hole_marker(HEAP_TOP(p), (sz))
# else
# define INIT_HEAP_MEM(p,sz) memset(HEAP_TOP(p),DEBUG_BAD_BYTE,(sz)*sizeof(Eterm*))
# endif
#else
# define INIT_HEAP_MEM(p,sz) ((void)0)
#endif /* DEBUG */
#ifdef FORCE_HEAP_FRAGS
# define IS_FORCE_HEAP_FRAGS 1
#else
# define IS_FORCE_HEAP_FRAGS 0
#endif
/*
* Allocate heap memory, first on the ordinary heap;
* failing that, in a heap fragment.
*/
#define HAlloc(p, sz) \
(ASSERT_EXPR((sz) >= 0), \
ErtsHAllocLockCheck(p), \
(IS_FORCE_HEAP_FRAGS || (((HEAP_LIMIT(p) - HEAP_TOP(p)) < (sz))) \
? erts_heap_alloc((p),(sz)) \
: (INIT_HEAP_MEM(p,sz), \
HEAP_TOP(p) = HEAP_TOP(p) + (sz), HEAP_TOP(p) - (sz))))
#define HRelease(p, endp, ptr) \
if ((ptr) == (endp)) { \
; \
} else if (HEAP_START(p) <= (ptr) && (ptr) < HEAP_TOP(p)) { \
HEAP_TOP(p) = (ptr); \
} else { \
erts_heap_frag_shrink(p, ptr); \
}
#define HeapWordsLeft(p) (HEAP_LIMIT(p) - HEAP_TOP(p))
#if defined(DEBUG) || defined(CHECK_FOR_HOLES)
# define ERTS_HOLE_MARKER (((0xaf5e78ccUL << 24) << 8) | 0xaf5e78ccUL)
#endif
/*
* Allocate heap memory on the ordinary heap, NEVER in a heap
* segment. The caller must ensure that there is enough words
* left on the heap before calling HeapOnlyAlloc() (for instance,
* by testing HeapWordsLeft() and calling the garbage collector
* if not enough).
*/
#ifdef CHECK_FOR_HOLES
# define HeapOnlyAlloc(p, sz) \
(ASSERT_EXPR((sz) >= 0), \
(ASSERT_EXPR(((HEAP_LIMIT(p) - HEAP_TOP(p)) >= (sz))), \
(erts_set_hole_marker(HEAP_TOP(p), (sz)), \
(HEAP_TOP(p) = HEAP_TOP(p) + (sz), HEAP_TOP(p) - (sz)))))
#else
# define HeapOnlyAlloc(p, sz) \
(ASSERT_EXPR((sz) >= 0), \
(ASSERT_EXPR(((HEAP_LIMIT(p) - HEAP_TOP(p)) >= (sz))), \
(HEAP_TOP(p) = HEAP_TOP(p) + (sz), HEAP_TOP(p) - (sz))))
#endif
/*
* Description for each instruction (defined here because the name and
* count fields are interesting outside the emulator proper).
*/
typedef struct op_entry {
char* name; /* Name of instruction. */
Uint32 mask[3]; /* Signature mask. */
int sz; /* Number of loaded words. */
char* pack; /* Instructions for packing engine. */
char* sign; /* Signature string. */
unsigned count; /* Number of times executed. */
} OpEntry;
extern OpEntry opc[]; /* Description of all instructions. */
extern int num_instructions; /* Number of instruction in opc[]. */
/* some constants for various table sizes etc */
#define ATOM_TEXT_SIZE 32768 /* Increment for allocating atom text space */
#define ITIME 100 /* Number of milliseconds per clock tick */
#define MAX_PORT_LINK 8 /* Maximum number of links to a port */
extern int H_MIN_SIZE; /* minimum (heap + stack) */
extern int BIN_VH_MIN_SIZE; /* minimum virtual (bin) heap */
#define ORIG_CREATION 0
/* macros for extracting bytes from uint16's */
#define hi_byte(a) ((a) >> 8)
#define lo_byte(a) ((a) & 255)
/* macros for combining bytes */
#define make_16(x, y) (((x) << 8) | (y))
#define make_24(x,y,z) (((x) << 16) | ((y) << 8) | (z))
#define make_32(x3,x2,x1,x0) (((x3)<<24) | ((x2)<<16) | ((x1)<<8) | (x0))
#define make_signed_24(x,y,z) ((sint32) (((x) << 24) | ((y) << 16) | ((z) << 8)) >> 8)
#define make_signed_32(x3,x2,x1,x0) ((sint32) (((x3) << 24) | ((x2) << 16) | ((x1) << 8) | (x0)))
#include "erl_term.h"
#endif /* __ERL_VM_H__ */
|
