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-rw-r--r--libraries/luajit-2.0/src/lj_gc.h133
1 files changed, 0 insertions, 133 deletions
diff --git a/libraries/luajit-2.0/src/lj_gc.h b/libraries/luajit-2.0/src/lj_gc.h
deleted file mode 100644
index dd7f87b..0000000
--- a/libraries/luajit-2.0/src/lj_gc.h
+++ /dev/null
@@ -1,133 +0,0 @@
1/*
2** Garbage collector.
3** Copyright (C) 2005-2011 Mike Pall. See Copyright Notice in luajit.h
4*/
5
6#ifndef _LJ_GC_H
7#define _LJ_GC_H
8
9#include "lj_obj.h"
10
11/* Garbage collector states. Order matters. */
12enum {
13 GCSpause, GCSpropagate, GCSatomic, GCSsweepstring, GCSsweep, GCSfinalize
14};
15
16/* Bitmasks for marked field of GCobj. */
17#define LJ_GC_WHITE0 0x01
18#define LJ_GC_WHITE1 0x02
19#define LJ_GC_BLACK 0x04
20#define LJ_GC_FINALIZED 0x08
21#define LJ_GC_WEAKKEY 0x08
22#define LJ_GC_WEAKVAL 0x10
23#define LJ_GC_CDATA_FIN 0x10
24#define LJ_GC_FIXED 0x20
25#define LJ_GC_SFIXED 0x40
26
27#define LJ_GC_WHITES (LJ_GC_WHITE0 | LJ_GC_WHITE1)
28#define LJ_GC_COLORS (LJ_GC_WHITES | LJ_GC_BLACK)
29#define LJ_GC_WEAK (LJ_GC_WEAKKEY | LJ_GC_WEAKVAL)
30
31/* Macros to test and set GCobj colors. */
32#define iswhite(x) ((x)->gch.marked & LJ_GC_WHITES)
33#define isblack(x) ((x)->gch.marked & LJ_GC_BLACK)
34#define isgray(x) (!((x)->gch.marked & (LJ_GC_BLACK|LJ_GC_WHITES)))
35#define tviswhite(x) (tvisgcv(x) && iswhite(gcV(x)))
36#define otherwhite(g) (g->gc.currentwhite ^ LJ_GC_WHITES)
37#define isdead(g, v) ((v)->gch.marked & otherwhite(g) & LJ_GC_WHITES)
38
39#define curwhite(g) ((g)->gc.currentwhite & LJ_GC_WHITES)
40#define newwhite(g, x) (obj2gco(x)->gch.marked = (uint8_t)curwhite(g))
41#define makewhite(g, x) \
42 ((x)->gch.marked = ((x)->gch.marked & (uint8_t)~LJ_GC_COLORS) | curwhite(g))
43#define flipwhite(x) ((x)->gch.marked ^= LJ_GC_WHITES)
44#define black2gray(x) ((x)->gch.marked &= (uint8_t)~LJ_GC_BLACK)
45#define fixstring(s) ((s)->marked |= LJ_GC_FIXED)
46
47/* Collector. */
48LJ_FUNC size_t lj_gc_separateudata(global_State *g, int all);
49LJ_FUNC void lj_gc_finalize_udata(lua_State *L);
50#if LJ_HASFFI
51LJ_FUNC void lj_gc_finalize_cdata(lua_State *L);
52#else
53#define lj_gc_finalize_cdata(L) UNUSED(L)
54#endif
55LJ_FUNC void lj_gc_freeall(global_State *g);
56LJ_FUNCA int LJ_FASTCALL lj_gc_step(lua_State *L);
57LJ_FUNCA void LJ_FASTCALL lj_gc_step_fixtop(lua_State *L);
58#if LJ_HASJIT
59LJ_FUNC int LJ_FASTCALL lj_gc_step_jit(global_State *g, MSize steps);
60#endif
61LJ_FUNC void lj_gc_fullgc(lua_State *L);
62
63/* GC check: drive collector forward if the GC threshold has been reached. */
64#define lj_gc_check(L) \
65 { if (LJ_UNLIKELY(G(L)->gc.total >= G(L)->gc.threshold)) \
66 lj_gc_step(L); }
67#define lj_gc_check_fixtop(L) \
68 { if (LJ_UNLIKELY(G(L)->gc.total >= G(L)->gc.threshold)) \
69 lj_gc_step_fixtop(L); }
70
71/* Write barriers. */
72LJ_FUNC void lj_gc_barrierf(global_State *g, GCobj *o, GCobj *v);
73LJ_FUNCA void LJ_FASTCALL lj_gc_barrieruv(global_State *g, TValue *tv);
74LJ_FUNC void lj_gc_closeuv(global_State *g, GCupval *uv);
75#if LJ_HASJIT
76LJ_FUNC void lj_gc_barriertrace(global_State *g, uint32_t traceno);
77#endif
78
79/* Move the GC propagation frontier back for tables (make it gray again). */
80static LJ_AINLINE void lj_gc_barrierback(global_State *g, GCtab *t)
81{
82 GCobj *o = obj2gco(t);
83 lua_assert(isblack(o) && !isdead(g, o));
84 lua_assert(g->gc.state != GCSfinalize && g->gc.state != GCSpause);
85 black2gray(o);
86 setgcrefr(t->gclist, g->gc.grayagain);
87 setgcref(g->gc.grayagain, o);
88}
89
90/* Barrier for stores to table objects. TValue and GCobj variant. */
91#define lj_gc_anybarriert(L, t) \
92 { if (LJ_UNLIKELY(isblack(obj2gco(t)))) lj_gc_barrierback(G(L), (t)); }
93#define lj_gc_barriert(L, t, tv) \
94 { if (tviswhite(tv) && isblack(obj2gco(t))) \
95 lj_gc_barrierback(G(L), (t)); }
96#define lj_gc_objbarriert(L, t, o) \
97 { if (iswhite(obj2gco(o)) && isblack(obj2gco(t))) \
98 lj_gc_barrierback(G(L), (t)); }
99
100/* Barrier for stores to any other object. TValue and GCobj variant. */
101#define lj_gc_barrier(L, p, tv) \
102 { if (tviswhite(tv) && isblack(obj2gco(p))) \
103 lj_gc_barrierf(G(L), obj2gco(p), gcV(tv)); }
104#define lj_gc_objbarrier(L, p, o) \
105 { if (iswhite(obj2gco(o)) && isblack(obj2gco(p))) \
106 lj_gc_barrierf(G(L), obj2gco(p), obj2gco(o)); }
107
108/* Allocator. */
109LJ_FUNC void *lj_mem_realloc(lua_State *L, void *p, MSize osz, MSize nsz);
110LJ_FUNC void * LJ_FASTCALL lj_mem_newgco(lua_State *L, MSize size);
111LJ_FUNC void *lj_mem_grow(lua_State *L, void *p,
112 MSize *szp, MSize lim, MSize esz);
113
114#define lj_mem_new(L, s) lj_mem_realloc(L, NULL, 0, (s))
115
116static LJ_AINLINE void lj_mem_free(global_State *g, void *p, size_t osize)
117{
118 g->gc.total -= (MSize)osize;
119 g->allocf(g->allocd, p, osize, 0);
120}
121
122#define lj_mem_newvec(L, n, t) ((t *)lj_mem_new(L, (MSize)((n)*sizeof(t))))
123#define lj_mem_reallocvec(L, p, on, n, t) \
124 ((p) = (t *)lj_mem_realloc(L, p, (on)*sizeof(t), (MSize)((n)*sizeof(t))))
125#define lj_mem_growvec(L, p, n, m, t) \
126 ((p) = (t *)lj_mem_grow(L, (p), &(n), (m), (MSize)sizeof(t)))
127#define lj_mem_freevec(g, p, n, t) lj_mem_free(g, (p), (n)*sizeof(t))
128
129#define lj_mem_newobj(L, t) ((t *)lj_mem_newgco(L, sizeof(t)))
130#define lj_mem_newt(L, s, t) ((t *)lj_mem_new(L, (s)))
131#define lj_mem_freet(g, p) lj_mem_free(g, (p), sizeof(*(p)))
132
133#endif
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