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generational collection: new attempt (still incomplete)

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Roberto Ierusalimschy
2017-02-23 18:07:34 -03:00
parent e6c1e6005a
commit f5f3df3bd1
8 changed files with 195 additions and 40 deletions
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9
lgc.h
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@@ -1,5 +1,5 @@
/*
** $Id: lgc.h,v 2.90 2015/10/21 18:15:15 roberto Exp roberto $
** $Id: lgc.h,v 2.91 2015/12/21 13:02:14 roberto Exp roberto $
** Garbage Collector
** See Copyright Notice in lua.h
*/
@@ -79,7 +79,8 @@
#define WHITE1BIT 1 /* object is white (type 1) */
#define BLACKBIT 2 /* object is black */
#define FINALIZEDBIT 3 /* object has been marked for finalization */
/* bit 7 is currently used by tests (luaL_checkmemory) */
#define OLDBIT 4 /* object is old (gen. mode) */
#define TESTGRAYBIT 7 /* used by tests (luaL_checkmemory) */
#define WHITEBITS bit2mask(WHITE0BIT, WHITE1BIT)
@@ -88,11 +89,12 @@
#define isblack(x) testbit((x)->marked, BLACKBIT)
#define isgray(x) /* neither white nor black */ \
(!testbits((x)->marked, WHITEBITS | bitmask(BLACKBIT)))
#define isold(x) testbit((x)->marked, OLDBIT)
#define tofinalize(x) testbit((x)->marked, FINALIZEDBIT)
#define otherwhite(g) ((g)->currentwhite ^ WHITEBITS)
#define isdeadm(ow,m) (!(((m) ^ WHITEBITS) & (ow)))
#define isdeadm(ow,m) ((m) & (ow))
#define isdead(g,v) isdeadm(otherwhite(g), (v)->marked)
#define changewhite(x) ((x)->marked ^= WHITEBITS)
@@ -142,6 +144,7 @@ LUAI_FUNC void luaC_barrierback_ (lua_State *L, Table *o);
LUAI_FUNC void luaC_upvalbarrier_ (lua_State *L, UpVal *uv);
LUAI_FUNC void luaC_checkfinalizer (lua_State *L, GCObject *o, Table *mt);
LUAI_FUNC void luaC_upvdeccount (lua_State *L, UpVal *uv);
LUAI_FUNC void luaC_changemode (lua_State *L, int newmode);
#endif