blob: cee0796987c6deb4a921c26028d45ca9f2d24db4 (
plain)
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
|
/*
** $Id: lstate.h,v 1.57 2001/06/06 18:00:19 roberto Exp roberto $
** Global State
** See Copyright Notice in lua.h
*/
#ifndef lstate_h
#define lstate_h
#include "lobject.h"
#include "lua.h"
#include "luadebug.h"
/*
** macros for thread syncronization inside Lua core machine:
** all accesses to the global state and to global objects are syncronized.
** Because threads can read the stack of other threads
** (when running garbage collection),
** a thread must also syncronize any write-access to its own stack.
** Unsyncronized accesses are allowed only when reading its own stack,
** or when reading immutable fields from global objects
** (such as string values and udata values).
*/
#ifndef lua_lock
#define lua_lock(L) ((void) 0)
#endif
#ifndef lua_unlock
#define lua_unlock(L) ((void) 0)
#endif
/*
** macro to allow the inclusion of user information in Lua state
*/
#ifndef LUA_USERSTATE
#define LUA_USERSTATE
#endif
struct lua_longjmp; /* defined in ldo.c */
struct TM; /* defined in ltm.h */
typedef struct stringtable {
int size;
ls_nstr nuse; /* number of elements */
TString **hash;
} stringtable;
/*
** `global state', shared by all threads of this state
*/
typedef struct global_State {
void *Mbuffer; /* global buffer */
size_t Mbuffsize; /* size of Mbuffer */
Proto *rootproto; /* list of all prototypes */
Closure *rootcl; /* list of all closures */
Hash *roottable; /* list of all tables */
Udata *rootudata; /* list of all userdata */
stringtable strt; /* hash table for strings */
Hash *type2tag; /* hash table from type names to tags */
Hash *registry; /* (strong) registry table */
Hash *weakregistry; /* weakregistry table */
struct TM *TMtable; /* table for tag methods */
int sizeTM; /* size of TMtable */
int ntag; /* number of tags in TMtable */
lu_mem GCthreshold;
lu_mem nblocks; /* number of `bytes' currently allocated */
} global_State;
/*
** `per thread' state
*/
struct lua_State {
LUA_USERSTATE
StkId top; /* first free slot in the stack */
CallInfo *ci; /* call info for current function */
StkId stack_last; /* last free slot in the stack */
Hash *gt; /* table for globals */
global_State *G;
StkId stack; /* stack base */
int stacksize;
lua_Hook callhook;
lua_Hook linehook;
int allowhooks;
struct lua_longjmp *errorJmp; /* current error recover point */
lua_State *next; /* circular double linked list of states */
lua_State *previous;
CallInfo basefunc;
};
#define G(L) (L->G)
#endif
|
