#include "lobject.h"
#include "lstate.h"

Include dependency graph for lgc.h:

This graph shows which files directly or indirectly include this file:

Defines
#define	GCSpropagate 0
#define	GCSatomic 1
#define	GCSsweepstring 2
#define	GCSsweepudata 3
#define	GCSsweep 4
#define	GCSpause 5
#define	issweepphase(g) (GCSsweepstring <= (g)->gcstate && (g)->gcstate <= GCSsweep)
#define	isgenerational(g) ((g)->gckind == KGC_GEN)
#define	keepinvariant(g) (isgenerational(g) \|\| g->gcstate <= GCSatomic)
#define	resetbits(x, m) ((x) &= cast(lu_byte, ~(m)))
#define	setbits(x, m) ((x) \|= (m))
#define	testbits(x, m) ((x) & (m))
#define	bitmask(b) (1<<(b))
#define	bit2mask(b1, b2) (bitmask(b1) \| bitmask(b2))
#define	l_setbit(x, b) setbits(x, bitmask(b))
#define	resetbit(x, b) resetbits(x, bitmask(b))
#define	testbit(x, b) testbits(x, bitmask(b))
#define	WHITE0BIT 0
#define	WHITE1BIT 1
#define	BLACKBIT 2
#define	FINALIZEDBIT 3
#define	SEPARATED 4
#define	FIXEDBIT 5
#define	OLDBIT 6
#define	WHITEBITS bit2mask(WHITE0BIT, WHITE1BIT)
#define	iswhite(x) testbits((x)->gch.marked, WHITEBITS)
#define	isblack(x) testbit((x)->gch.marked, BLACKBIT)
#define	isgray(x)
#define	isold(x) testbit((x)->gch.marked, OLDBIT)
#define	resetoldbit(o) resetbit((o)->gch.marked, OLDBIT)
#define	otherwhite(g) (g->currentwhite ^ WHITEBITS)
#define	isdeadm(ow, m) (!(((m) ^ WHITEBITS) & (ow)))
#define	isdead(g, v) isdeadm(otherwhite(g), (v)->gch.marked)
#define	changewhite(x) ((x)->gch.marked ^= WHITEBITS)
#define	gray2black(x) l_setbit((x)->gch.marked, BLACKBIT)
#define	valiswhite(x) (iscollectable(x) && iswhite(gcvalue(x)))
#define	luaC_white(g) cast(lu_byte, (g)->currentwhite & WHITEBITS)
#define	luaC_condGC(L, c) {if (G(L)->GCdebt > 0) {c;}; condchangemem(L);}
#define	luaC_checkGC(L) luaC_condGC(L, luaC_step(L);)
#define	luaC_barrier(L, p, v)
#define	luaC_barrierback(L, p, v)
#define	luaC_objbarrier(L, p, o)
#define	luaC_objbarrierback(L, p, o) { if (iswhite(obj2gco(o)) && isblack(obj2gco(p))) luaC_barrierback_(L,p); }
#define	luaC_barrierproto(L, p, c) { if (isblack(obj2gco(p))) luaC_barrierproto_(L,p,c); }
Functions
LUAI_FUNC void	luaC_freeallobjects (lua_State *L)
LUAI_FUNC void	luaC_step (lua_State *L)
LUAI_FUNC void	luaC_forcestep (lua_State *L)
LUAI_FUNC void	luaC_runtilstate (lua_State *L, int statesmask)
LUAI_FUNC void	luaC_fullgc (lua_State *L, int isemergency)
LUAI_FUNC GCObject *	luaC_newobj (lua_State L, int tt, size_t sz, GCObject *list, int offset)
LUAI_FUNC void	luaC_barrier_ (lua_State L, GCObject o, GCObject *v)
LUAI_FUNC void	luaC_barrierback_ (lua_State L, GCObject o)
LUAI_FUNC void	luaC_barrierproto_ (lua_State L, Proto p, Closure *c)
LUAI_FUNC void	luaC_checkfinalizer (lua_State L, GCObject o, Table *mt)
LUAI_FUNC void	luaC_checkupvalcolor (global_State g, UpVal uv)
LUAI_FUNC void	luaC_changemode (lua_State *L, int mode)

Define Documentation

#define bit2mask	(	b1,
		b2
	)		(bitmask(b1) \| bitmask(b2))

Definition at line 62 of file lgc.h.

Referenced by lua_newstate().

#define bitmask ( b ) (1<<(b))

Definition at line 61 of file lgc.h.

Referenced by generationalcollection(), luaC_changemode(), luaC_fullgc(), luaS_resize(), and sweeplist().

#define BLACKBIT 2

Definition at line 71 of file lgc.h.

#define changewhite ( x ) ((x)->gch.marked ^= WHITEBITS)

Definition at line 96 of file lgc.h.

Referenced by luaF_findupval(), and luaS_newlstr().

#define FINALIZEDBIT 3

Definition at line 72 of file lgc.h.

Referenced by separatetobefnz().

#define FIXEDBIT 5

Definition at line 74 of file lgc.h.

Referenced by lua_newstate().

#define GCSatomic 1

Definition at line 32 of file lgc.h.

Referenced by traversestack().

#define GCSpause 5

Definition at line 36 of file lgc.h.

Referenced by generationalcollection(), lua_gc(), luaC_barrier_(), luaC_fullgc(), singlestep(), and step().

#define GCSpropagate 0

Definition at line 31 of file lgc.h.

Referenced by luaC_changemode(), luaC_fullgc(), and singlestep().

#define GCSsweep 4

Definition at line 35 of file lgc.h.

Referenced by singlestep().

#define GCSsweepstring 2

Definition at line 33 of file lgc.h.

Referenced by luaS_resize(), and singlestep().

#define GCSsweepudata 3

Definition at line 34 of file lgc.h.

Referenced by singlestep().

#define gray2black ( x ) l_setbit((x)->gch.marked, BLACKBIT)

Definition at line 97 of file lgc.h.

Referenced by luaC_checkupvalcolor(), propagatemark(), and reallymarkobject().

#define isblack ( x ) testbit((x)->gch.marked, BLACKBIT)

Definition at line 82 of file lgc.h.

Referenced by luaC_barrier_(), luaC_barrierback_(), luaC_barrierproto_(), luaC_checkupvalcolor(), and luaF_close().

#define isdead	(	g,
		v
	)		isdeadm(otherwhite(g), (v)->gch.marked)

Definition at line 94 of file lgc.h.

Referenced by luaC_barrier_(), luaC_barrierback_(), luaF_close(), luaF_findupval(), luaS_newlstr(), and reallymarkobject().

#define isdeadm	(	ow,
		m
	)		(!(((m) ^ WHITEBITS) & (ow)))

Definition at line 93 of file lgc.h.

Referenced by sweeplist().

#define isgenerational ( g ) ((g)->gckind == KGC_GEN)

Definition at line 42 of file lgc.h.

Referenced by luaC_barrier_(), luaC_forcestep(), singlestep(), and sweeplist().

#define isgray ( x )

Value:

/* neither white nor black */  \
    (!testbits((x)->gch.marked, WHITEBITS | bitmask(BLACKBIT)))

Definition at line 83 of file lgc.h.

Referenced by luaC_checkupvalcolor(), propagatemark(), and remarkupvals().

#define isold ( x ) testbit((x)->gch.marked, OLDBIT)

Definition at line 86 of file lgc.h.

Referenced by udata2finalize().

#define issweepphase ( g ) (GCSsweepstring <= (g)->gcstate && (g)->gcstate <= GCSsweep)

Definition at line 39 of file lgc.h.

Referenced by luaC_barrier_(), and luaC_checkupvalcolor().

#define iswhite ( x ) testbits((x)->gch.marked, WHITEBITS)

Definition at line 81 of file lgc.h.

Referenced by atomic(), iscleared(), luaC_barrier_(), reallymarkobject(), separatetobefnz(), singlestep(), and traverseproto().

#define keepinvariant ( g ) (isgenerational(g) || g->gcstate <= GCSatomic)

Definition at line 52 of file lgc.h.

Referenced by luaC_barrier_(), luaC_checkupvalcolor(), luaC_fullgc(), and udata2finalize().

#define l_setbit	(	x,
		b
	)		setbits(x, bitmask(b))

Definition at line 63 of file lgc.h.

Referenced by luaC_checkfinalizer(), and separatetobefnz().

#define luaC_barrier	(	L,
		p,
		v
	)

Value:

{ if (valiswhite(v) && isblack(obj2gco(p)))  \
    luaC_barrier_(L,obj2gco(p),gcvalue(v)); }

Definition at line 109 of file lgc.h.

Referenced by addk(), lua_load(), lua_setupvalue(), luaV_execute(), and moveto().

#define luaC_barrierback	(	L,
		p,
		v
	)

Value:

{ if (valiswhite(v) && isblack(obj2gco(p)))  \
    luaC_barrierback_(L,p); }

Definition at line 112 of file lgc.h.

Referenced by lua_rawset(), lua_rawseti(), lua_rawsetp(), luaH_newkey(), luaV_execute(), and luaV_settable().

#define luaC_barrierproto	(	L,
		p,
		c
	)		{ if (isblack(obj2gco(p))) luaC_barrierproto_(L,p,c); }

Definition at line 122 of file lgc.h.

Referenced by pushclosure().

#define luaC_checkGC ( L ) luaC_condGC(L, luaC_step(L);)

Definition at line 106 of file lgc.h.

Referenced by close_func(), lua_concat(), lua_createtable(), lua_newthread(), lua_newuserdata(), lua_pushcclosure(), lua_pushfstring(), lua_pushlstring(), lua_pushstring(), lua_pushvfstring(), lua_tolstring(), luaD_call(), and luaX_newstring().

#define luaC_condGC	(	L,
		c
	)		{if (G(L)->GCdebt > 0) {c;}; condchangemem(L);}

Definition at line 104 of file lgc.h.

#define luaC_objbarrier	(	L,
		p,
		o
	)

Value:

{ if (iswhite(obj2gco(o)) && isblack(obj2gco(p))) \
        luaC_barrier_(L,obj2gco(p),obj2gco(o)); }

Definition at line 115 of file lgc.h.

Referenced by codeclosure(), lua_setmetatable(), lua_setuservalue(), lua_upvaluejoin(), luaC_barrierproto_(), newupvalue(), and registerlocalvar().

#define luaC_objbarrierback	(	L,
		p,
		o
	)		{ if (iswhite(obj2gco(o)) && isblack(obj2gco(p))) luaC_barrierback_(L,p); }

Definition at line 119 of file lgc.h.

Referenced by lua_setmetatable().

#define luaC_white ( g ) cast(lu_byte, (g)->currentwhite & WHITEBITS)

Definition at line 101 of file lgc.h.

Referenced by lua_newstate(), luaC_newobj(), and sweeplist().

#define OLDBIT 6

Definition at line 75 of file lgc.h.

Referenced by sweeplist().

#define otherwhite ( g ) (g->currentwhite ^ WHITEBITS)

Definition at line 92 of file lgc.h.

Referenced by atomic(), and sweeplist().

#define resetbit	(	x,
		b
	)		resetbits(x, bitmask(b))

Definition at line 64 of file lgc.h.

Referenced by udata2finalize().

#define resetbits	(	x,
		m
	)		((x) &= cast(lu_byte, ~(m)))

Definition at line 58 of file lgc.h.

#define resetoldbit ( o ) resetbit((o)->gch.marked, OLDBIT)

Definition at line 90 of file lgc.h.

Referenced by callallpendingfinalizers(), luaC_checkfinalizer(), luaC_checkupvalcolor(), luaF_findupval(), and luaS_resize().

#define SEPARATED 4

Definition at line 73 of file lgc.h.

Referenced by luaC_checkfinalizer(), separatetobefnz(), and udata2finalize().

#define setbits	(	x,
		m
	)		((x) \|= (m))

Definition at line 59 of file lgc.h.

#define testbit	(	x,
		b
	)		testbits(x, bitmask(b))

Definition at line 65 of file lgc.h.

Referenced by luaC_checkfinalizer(), luaC_runtilstate(), and separatetobefnz().

#define testbits	(	x,
		m
	)		((x) & (m))

Definition at line 60 of file lgc.h.

Referenced by sweeplist().

#define valiswhite ( x ) (iscollectable(x) && iswhite(gcvalue(x)))

Definition at line 99 of file lgc.h.

Referenced by removeentry(), and traverseephemeron().

#define WHITE0BIT 0

Definition at line 69 of file lgc.h.

Referenced by lua_newstate().

#define WHITE1BIT 1

Definition at line 70 of file lgc.h.

#define WHITEBITS bit2mask(WHITE0BIT, WHITE1BIT)

Definition at line 78 of file lgc.h.

Function Documentation

LUAI_FUNC void luaC_barrier_	(	lua_State *	L,
		GCObject *	o,
		GCObject *	v
	)

Definition at line 140 of file lgc.c.

References G, gch, GCSpause, global_State::gcstate, isblack, isdead, isgenerational, issweepphase, iswhite, keepinvariant, lua_assert, LUA_TTABLE, makewhite, and reallymarkobject().

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LUAI_FUNC void luaC_barrierback_	(	lua_State *	L,
		GCObject *	o
	)

Definition at line 160 of file lgc.c.

References black2gray, G, gch, gco2t, global_State::grayagain, isblack, isdead, lua_assert, and LUA_TTABLE.

LUAI_FUNC void luaC_barrierproto_	(	lua_State *	L,
		Proto *	p,
		Closure *	c
	)

Definition at line 177 of file lgc.c.

References black2gray, Proto::cache, G, Proto::gclist, global_State::grayagain, isblack, lua_assert, luaC_objbarrier, and obj2gco.

LUAI_FUNC void luaC_changemode	(	lua_State *	L,
		int	mode
	)

Definition at line 862 of file lgc.c.

References bitmask, G, global_State::gckind, GCSpropagate, global_State::gcstate, gettotalbytes, KGC_GEN, global_State::lastmajormem, luaC_runtilstate(), sweepphases, and global_State::sweepstrgc.

Referenced by lua_gc().

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LUAI_FUNC void luaC_checkfinalizer	(	lua_State *	L,
		GCObject *	o,
		Table *	mt
	)

Definition at line 829 of file lgc.c.

References global_State::allgc, global_State::finobj, G, gch, gfasttm, isfinalized, l_setbit, resetoldbit, SEPARATED, testbit, and TM_GC.

Referenced by lua_setmetatable().

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LUAI_FUNC void luaC_checkupvalcolor	(	global_State *	g,
		UpVal *	uv
	)

Definition at line 195 of file lgc.c.

References gray2black, isblack, isgray, issweepphase, keepinvariant, lua_assert, makewhite, markvalue, obj2gco, resetoldbit, and UpVal::v.

Referenced by luaF_close().

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LUAI_FUNC void luaC_forcestep ( lua_State * L )

Definition at line 1051 of file lgc.c.

References G, GCFINALIZENUM, GCTM(), generationalcollection(), isgenerational, step(), and global_State::tobefnz.

Referenced by lua_gc(), and luaC_step().

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LUAI_FUNC void luaC_freeallobjects ( lua_State * L )

Definition at line 894 of file lgc.c.

References global_State::allgc, callallpendingfinalizers(), global_State::currentwhite, global_State::finobj, G, global_State::gckind, stringtable::hash, lua_assert, stringtable::nuse, separatetobefnz(), stringtable::size, global_State::strt, and sweepwholelist.

Referenced by close_state().

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LUAI_FUNC void luaC_fullgc	(	lua_State *	L,
		int	isemergency
	)

Definition at line 1073 of file lgc.c.

References bitmask, callallpendingfinalizers(), G, global_State::gckind, GCSpause, GCSpropagate, global_State::gcstate, keepinvariant, KGC_EMERGENCY, KGC_GEN, lua_assert, luaC_runtilstate(), luaE_setdebt(), stddebt, and global_State::sweepstrgc.

Referenced by generationalcollection(), lua_gc(), and luaM_realloc_().

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LUAI_FUNC GCObject* luaC_newobj	(	lua_State *	L,
		int	tt,
		size_t	sz,
		GCObject **	list,
		int	offset
	)

Definition at line 217 of file lgc.c.

References global_State::allgc, cast, G, gch, luaC_white, luaM_newobject, and obj2gco.

Referenced by lua_newthread(), luaF_findupval(), luaF_newCclosure(), luaF_newLclosure(), luaF_newproto(), luaF_newupval(), luaH_new(), luaS_newudata(), and newlstr().

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LUAI_FUNC void luaC_runtilstate	(	lua_State *	L,
		int	statesmask
	)

Definition at line 1012 of file lgc.c.

References G, global_State::gcstate, singlestep(), and testbit.

Referenced by generationalcollection(), luaC_changemode(), luaC_fullgc(), and luaS_resize().

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LUAI_FUNC void luaC_step ( lua_State * L )

Definition at line 1064 of file lgc.c.

References G, and luaC_forcestep().

Referenced by luaV_execute().

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lua/lgc.h File Reference

Defines

Functions

Define Documentation

Function Documentation