diff options
Diffstat (limited to 'libs/liblua/src/lfunc.h')
| -rw-r--r-- | libs/liblua/src/lfunc.h | 50 |
1 files changed, 29 insertions, 21 deletions
diff --git a/libs/liblua/src/lfunc.h b/libs/liblua/src/lfunc.h index c916e9878a..8d6f965cfc 100644 --- a/libs/liblua/src/lfunc.h +++ b/libs/liblua/src/lfunc.h @@ -1,5 +1,5 @@ /* -** $Id: lfunc.h,v 2.15.1.1 2017/04/19 17:39:34 roberto Exp $ +** $Id: lfunc.h $ ** Auxiliary functions to manipulate prototypes and closures ** See Copyright Notice in lua.h */ @@ -11,11 +11,11 @@ #include "lobject.h" -#define sizeCclosure(n) (cast(int, sizeof(CClosure)) + \ - cast(int, sizeof(TValue)*((n)-1))) +#define sizeCclosure(n) (cast_int(offsetof(CClosure, upvalue)) + \ + cast_int(sizeof(TValue)) * (n)) -#define sizeLclosure(n) (cast(int, sizeof(LClosure)) + \ - cast(int, sizeof(TValue *)*((n)-1))) +#define sizeLclosure(n) (cast_int(offsetof(LClosure, upvals)) + \ + cast_int(sizeof(TValue *)) * (n)) /* test whether thread is in 'twups' list */ @@ -29,30 +29,38 @@ #define MAXUPVAL 255 +#define upisopen(up) ((up)->v != &(up)->u.value) + + +#define uplevel(up) check_exp(upisopen(up), cast(StkId, (up)->v)) + + /* -** Upvalues for Lua closures +** maximum number of misses before giving up the cache of closures +** in prototypes */ -struct UpVal { - TValue *v; /* points to stack or to its own value */ - lu_mem refcount; /* reference counter */ - union { - struct { /* (when open) */ - UpVal *next; /* linked list */ - int touched; /* mark to avoid cycles with dead threads */ - } open; - TValue value; /* the value (when closed) */ - } u; -}; +#define MAXMISS 10 -#define upisopen(up) ((up)->v != &(up)->u.value) + +/* +** Special "status" for 'luaF_close' +*/ + +/* close upvalues without running their closing methods */ +#define NOCLOSINGMETH (-1) + +/* close upvalues running all closing methods in protected mode */ +#define CLOSEPROTECT (-2) LUAI_FUNC Proto *luaF_newproto (lua_State *L); -LUAI_FUNC CClosure *luaF_newCclosure (lua_State *L, int nelems); -LUAI_FUNC LClosure *luaF_newLclosure (lua_State *L, int nelems); +LUAI_FUNC CClosure *luaF_newCclosure (lua_State *L, int nupvals); +LUAI_FUNC LClosure *luaF_newLclosure (lua_State *L, int nupvals); LUAI_FUNC void luaF_initupvals (lua_State *L, LClosure *cl); LUAI_FUNC UpVal *luaF_findupval (lua_State *L, StkId level); -LUAI_FUNC void luaF_close (lua_State *L, StkId level); +LUAI_FUNC void luaF_newtbcupval (lua_State *L, StkId level); +LUAI_FUNC int luaF_close (lua_State *L, StkId level, int status); +LUAI_FUNC void luaF_unlinkupval (UpVal *uv); LUAI_FUNC void luaF_freeproto (lua_State *L, Proto *f); LUAI_FUNC const char *luaF_getlocalname (const Proto *func, int local_number, int pc); |