mirror of
https://github.com/lua/lua
synced 2024-11-25 22:29:39 +03:00
55 lines
1.1 KiB
C
55 lines
1.1 KiB
C
/*
|
|
** $Id: lgc.h,v 1.22 2003/11/17 19:50:05 roberto Exp roberto $
|
|
** Garbage Collector
|
|
** See Copyright Notice in lua.h
|
|
*/
|
|
|
|
#ifndef lgc_h
|
|
#define lgc_h
|
|
|
|
|
|
#include "lobject.h"
|
|
|
|
|
|
/*
|
|
* ** some userful bit tricks
|
|
* */
|
|
#define bitmask(b) (1<<(b))
|
|
#define setbit(x,b) ((x) |= bitmask(b))
|
|
#define resetbit(x,b) ((x) &= cast(lu_byte, ~bitmask(b)))
|
|
#define testbit(x,b) ((x) & bitmask(b))
|
|
|
|
|
|
|
|
/*
|
|
** Layout for bit use in `marked' field:
|
|
** bit 0 - object is gray
|
|
** bit 1 - object is black
|
|
** bit 2 - For userdata: is finalized;
|
|
for tables: has weak keys
|
|
** bit 3 - for tables: has weak values
|
|
** bit 4 - object is fixed (should not be collected)
|
|
*/
|
|
|
|
#define GRAYBIT 0
|
|
#define BLACKBIT 1
|
|
#define FINALIZEDBIT 2
|
|
#define KEYWEAKBIT 2
|
|
#define VALUEWEAKBIT 3
|
|
#define FIXEDBIT 4
|
|
|
|
|
|
|
|
#define luaC_checkGC(L) { if (G(L)->nblocks >= G(L)->GCthreshold) \
|
|
luaC_collectgarbage(L); }
|
|
|
|
|
|
size_t luaC_separateudata (lua_State *L);
|
|
void luaC_callGCTM (lua_State *L);
|
|
void luaC_sweep (lua_State *L, int all);
|
|
void luaC_collectgarbage (lua_State *L);
|
|
void luaC_link (lua_State *L, GCObject *o, lu_byte tt);
|
|
|
|
|
|
#endif
|