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-rw-r--r--lib/lua/src/lstate.c440
1 files changed, 220 insertions, 220 deletions
diff --git a/lib/lua/src/lstate.c b/lib/lua/src/lstate.c
index 53eb6aa..ccd6aeb 100644
--- a/lib/lua/src/lstate.c
+++ b/lib/lua/src/lstate.c
@@ -1,220 +1,220 @@
-/*
-** $Id: lstate.c,v 1.3 2004-11-27 21:35:20 pixel Exp $
-** Global State
-** See Copyright Notice in lua.h
-*/
-
-
-#include <stdlib.h>
-
-#define lstate_c
-
-#include "lua.h"
-
-#include "ldebug.h"
-#include "ldo.h"
-#include "lfunc.h"
-#include "lgc.h"
-#include "llex.h"
-#include "lmem.h"
-#include "lstate.h"
-#include "lstring.h"
-#include "ltable.h"
-#include "ltm.h"
-
-
-/*
-** macro to allow the inclusion of user information in Lua state
-*/
-#ifndef LUA_USERSTATE
-#define EXTRASPACE 0
-#else
-union UEXTRASPACE {L_Umaxalign a; LUA_USERSTATE b;};
-#define EXTRASPACE (sizeof(union UEXTRASPACE))
-#endif
-
-
-
-/*
-** you can change this function through the official API:
-** call `lua_setpanicf'
-*/
-static int default_panic (lua_State *L) {
- UNUSED(L);
- return 0;
-}
-
-
-static lua_State *mallocstate (lua_State *L) {
- lu_byte *block = (lu_byte *)luaM_malloc(L, sizeof(lua_State) + EXTRASPACE);
- if (block == NULL) return NULL;
- else {
- block += EXTRASPACE;
- return cast(lua_State *, block);
- }
-}
-
-
-static void freestate (lua_State *L, lua_State *L1) {
- luaM_free(L, cast(lu_byte *, L1) - EXTRASPACE,
- sizeof(lua_State) + EXTRASPACE);
-}
-
-
-static void stack_init (lua_State *L1, lua_State *L) {
- L1->stack = luaM_newvector(L, BASIC_STACK_SIZE + EXTRA_STACK, TObject);
- L1->stacksize = BASIC_STACK_SIZE + EXTRA_STACK;
- L1->top = L1->stack;
- L1->stack_last = L1->stack+(L1->stacksize - EXTRA_STACK)-1;
- L1->base_ci = luaM_newvector(L, BASIC_CI_SIZE, CallInfo);
- L1->ci = L1->base_ci;
- L1->ci->state = CI_C; /* not a Lua function */
- setnilvalue(L1->top++); /* `function' entry for this `ci' */
- L1->base = L1->ci->base = L1->top;
- L1->ci->top = L1->top + LUA_MINSTACK;
- L1->size_ci = BASIC_CI_SIZE;
- L1->end_ci = L1->base_ci + L1->size_ci;
-}
-
-
-static void freestack (lua_State *L, lua_State *L1) {
- luaM_freearray(L, L1->base_ci, L1->size_ci, CallInfo);
- luaM_freearray(L, L1->stack, L1->stacksize, TObject);
-}
-
-
-/*
-** open parts that may cause memory-allocation errors
-*/
-static void f_luaopen (lua_State *L, void *ud) {
- /* create a new global state */
- global_State *g = luaM_new(NULL, global_State);
- UNUSED(ud);
- if (g == NULL) luaD_throw(L, LUA_ERRMEM);
- L->l_G = g;
- g->mainthread = L;
- g->GCthreshold = 0; /* mark it as unfinished state */
- g->strt.size = 0;
- g->strt.nuse = 0;
- g->strt.hash = NULL;
- setnilvalue(defaultmeta(L));
- setnilvalue(registry(L));
- luaZ_initbuffer(L, &g->buff);
- g->panic = default_panic;
- g->rootgc = NULL;
- g->rootudata = NULL;
- g->tmudata = NULL;
- setnilvalue(gkey(g->dummynode));
- setnilvalue(gval(g->dummynode));
- g->dummynode->next = NULL;
- g->nblocks = sizeof(lua_State) + sizeof(global_State);
- stack_init(L, L); /* init stack */
- /* create default meta table with a dummy table, and then close the loop */
- defaultmeta(L)->tt = LUA_TTABLE;
- sethvalue(defaultmeta(L), luaH_new(L, 0, 0));
- hvalue(defaultmeta(L))->metatable = hvalue(defaultmeta(L));
- sethvalue(gt(L), luaH_new(L, 0, 4)); /* table of globals */
- sethvalue(registry(L), luaH_new(L, 4, 4)); /* registry */
- luaS_resize(L, MINSTRTABSIZE); /* initial size of string table */
- luaT_init(L);
- luaX_init(L);
- luaS_fix(luaS_newliteral(L, MEMERRMSG));
- g->GCthreshold = 4*G(L)->nblocks;
-}
-
-
-static void preinit_state (lua_State *L) {
- L->stack = NULL;
- L->stacksize = 0;
- L->errorJmp = NULL;
- L->hook = NULL;
- L->hookmask = L->hookinit = 0;
- L->basehookcount = 0;
- L->allowhook = 1;
- resethookcount(L);
- L->openupval = NULL;
- L->size_ci = 0;
- L->nCcalls = 0;
- L->base_ci = L->ci = NULL;
- L->errfunc = 0;
- setnilvalue(gt(L));
-}
-
-
-static void close_state (lua_State *L) {
- luaF_close(L, L->stack); /* close all upvalues for this thread */
- if (G(L)) { /* close global state */
- luaC_sweep(L, 1); /* collect all elements */
- lua_assert(G(L)->rootgc == NULL);
- lua_assert(G(L)->rootudata == NULL);
- luaS_freeall(L);
- luaZ_freebuffer(L, &G(L)->buff);
- }
- freestack(L, L);
- if (G(L)) {
- lua_assert(G(L)->nblocks == sizeof(lua_State) + sizeof(global_State));
- luaM_freelem(NULL, G(L));
- }
- freestate(NULL, L);
-}
-
-
-lua_State *luaE_newthread (lua_State *L) {
- lua_State *L1 = mallocstate(L);
- luaC_link(L, valtogco(L1), LUA_TTHREAD);
- preinit_state(L1);
- L1->l_G = L->l_G;
- stack_init(L1, L); /* init stack */
- setobj2n(gt(L1), gt(L)); /* share table of globals */
- return L1;
-}
-
-
-void luaE_freethread (lua_State *L, lua_State *L1) {
- luaF_close(L1, L1->stack); /* close all upvalues for this thread */
- lua_assert(L1->openupval == NULL);
- freestack(L, L1);
- freestate(L, L1);
-}
-
-
-LUA_API lua_State *lua_open (void) {
- lua_State *L = mallocstate(NULL);
- if (L) { /* allocation OK? */
- L->tt = LUA_TTHREAD;
- L->marked = 0;
- L->next = L->gclist = NULL;
- preinit_state(L);
- L->l_G = NULL;
- if (luaD_rawrunprotected(L, f_luaopen, NULL) != 0) {
- /* memory allocation error: free partial state */
- close_state(L);
- L = NULL;
- }
- }
- lua_userstateopen(L);
- return L;
-}
-
-
-static void callallgcTM (lua_State *L, void *ud) {
- UNUSED(ud);
- luaC_callGCTM(L); /* call GC metamethods for all udata */
-}
-
-
-LUA_API void lua_close (lua_State *L) {
- lua_lock(L);
- L = G(L)->mainthread; /* only the main thread can be closed */
- luaF_close(L, L->stack); /* close all upvalues for this thread */
- luaC_separateudata(L); /* separate udata that have GC metamethods */
- L->errfunc = 0; /* no error function during GC metamethods */
- do { /* repeat until no more errors */
- L->ci = L->base_ci;
- L->base = L->top = L->ci->base;
- L->nCcalls = 0;
- } while (luaD_rawrunprotected(L, callallgcTM, NULL) != 0);
- lua_assert(G(L)->tmudata == NULL);
- close_state(L);
-}
-
+/*
+** $Id: lstate.c,v 1.4 2004-11-27 21:46:07 pixel Exp $
+** Global State
+** See Copyright Notice in lua.h
+*/
+
+
+#include <stdlib.h>
+
+#define lstate_c
+
+#include "lua.h"
+
+#include "ldebug.h"
+#include "ldo.h"
+#include "lfunc.h"
+#include "lgc.h"
+#include "llex.h"
+#include "lmem.h"
+#include "lstate.h"
+#include "lstring.h"
+#include "ltable.h"
+#include "ltm.h"
+
+
+/*
+** macro to allow the inclusion of user information in Lua state
+*/
+#ifndef LUA_USERSTATE
+#define EXTRASPACE 0
+#else
+union UEXTRASPACE {L_Umaxalign a; LUA_USERSTATE b;};
+#define EXTRASPACE (sizeof(union UEXTRASPACE))
+#endif
+
+
+
+/*
+** you can change this function through the official API:
+** call `lua_setpanicf'
+*/
+static int default_panic (lua_State *L) {
+ UNUSED(L);
+ return 0;
+}
+
+
+static lua_State *mallocstate (lua_State *L) {
+ lu_byte *block = (lu_byte *)luaM_malloc(L, sizeof(lua_State) + EXTRASPACE);
+ if (block == NULL) return NULL;
+ else {
+ block += EXTRASPACE;
+ return cast(lua_State *, block);
+ }
+}
+
+
+static void freestate (lua_State *L, lua_State *L1) {
+ luaM_free(L, cast(lu_byte *, L1) - EXTRASPACE,
+ sizeof(lua_State) + EXTRASPACE);
+}
+
+
+static void stack_init (lua_State *L1, lua_State *L) {
+ L1->stack = luaM_newvector(L, BASIC_STACK_SIZE + EXTRA_STACK, TObject);
+ L1->stacksize = BASIC_STACK_SIZE + EXTRA_STACK;
+ L1->top = L1->stack;
+ L1->stack_last = L1->stack+(L1->stacksize - EXTRA_STACK)-1;
+ L1->base_ci = luaM_newvector(L, BASIC_CI_SIZE, CallInfo);
+ L1->ci = L1->base_ci;
+ L1->ci->state = CI_C; /* not a Lua function */
+ setnilvalue(L1->top++); /* `function' entry for this `ci' */
+ L1->base = L1->ci->base = L1->top;
+ L1->ci->top = L1->top + LUA_MINSTACK;
+ L1->size_ci = BASIC_CI_SIZE;
+ L1->end_ci = L1->base_ci + L1->size_ci;
+}
+
+
+static void freestack (lua_State *L, lua_State *L1) {
+ luaM_freearray(L, L1->base_ci, L1->size_ci, CallInfo);
+ luaM_freearray(L, L1->stack, L1->stacksize, TObject);
+}
+
+
+/*
+** open parts that may cause memory-allocation errors
+*/
+static void f_luaopen (lua_State *L, void *ud) {
+ /* create a new global state */
+ global_State *g = luaM_new(NULL, global_State);
+ UNUSED(ud);
+ if (g == NULL) luaD_throw(L, LUA_ERRMEM);
+ L->l_G = g;
+ g->mainthread = L;
+ g->GCthreshold = 0; /* mark it as unfinished state */
+ g->strt.size = 0;
+ g->strt.nuse = 0;
+ g->strt.hash = NULL;
+ setnilvalue(defaultmeta(L));
+ setnilvalue(registry(L));
+ luaZ_initbuffer(L, &g->buff);
+ g->panic = default_panic;
+ g->rootgc = NULL;
+ g->rootudata = NULL;
+ g->tmudata = NULL;
+ setnilvalue(gkey(g->dummynode));
+ setnilvalue(gval(g->dummynode));
+ g->dummynode->next = NULL;
+ g->nblocks = sizeof(lua_State) + sizeof(global_State);
+ stack_init(L, L); /* init stack */
+ /* create default meta table with a dummy table, and then close the loop */
+ defaultmeta(L)->tt = LUA_TTABLE;
+ sethvalue(defaultmeta(L), luaH_new(L, 0, 0));
+ hvalue(defaultmeta(L))->metatable = hvalue(defaultmeta(L));
+ sethvalue(gt(L), luaH_new(L, 0, 4)); /* table of globals */
+ sethvalue(registry(L), luaH_new(L, 4, 4)); /* registry */
+ luaS_resize(L, MINSTRTABSIZE); /* initial size of string table */
+ luaT_init(L);
+ luaX_init(L);
+ luaS_fix(luaS_newliteral(L, MEMERRMSG));
+ g->GCthreshold = 4*G(L)->nblocks;
+}
+
+
+static void preinit_state (lua_State *L) {
+ L->stack = NULL;
+ L->stacksize = 0;
+ L->errorJmp = NULL;
+ L->hook = NULL;
+ L->hookmask = L->hookinit = 0;
+ L->basehookcount = 0;
+ L->allowhook = 1;
+ resethookcount(L);
+ L->openupval = NULL;
+ L->size_ci = 0;
+ L->nCcalls = 0;
+ L->base_ci = L->ci = NULL;
+ L->errfunc = 0;
+ setnilvalue(gt(L));
+}
+
+
+static void close_state (lua_State *L) {
+ luaF_close(L, L->stack); /* close all upvalues for this thread */
+ if (G(L)) { /* close global state */
+ luaC_sweep(L, 1); /* collect all elements */
+ lua_assert(G(L)->rootgc == NULL);
+ lua_assert(G(L)->rootudata == NULL);
+ luaS_freeall(L);
+ luaZ_freebuffer(L, &G(L)->buff);
+ }
+ freestack(L, L);
+ if (G(L)) {
+ lua_assert(G(L)->nblocks == sizeof(lua_State) + sizeof(global_State));
+ luaM_freelem(NULL, G(L));
+ }
+ freestate(NULL, L);
+}
+
+
+lua_State *luaE_newthread (lua_State *L) {
+ lua_State *L1 = mallocstate(L);
+ luaC_link(L, valtogco(L1), LUA_TTHREAD);
+ preinit_state(L1);
+ L1->l_G = L->l_G;
+ stack_init(L1, L); /* init stack */
+ setobj2n(gt(L1), gt(L)); /* share table of globals */
+ return L1;
+}
+
+
+void luaE_freethread (lua_State *L, lua_State *L1) {
+ luaF_close(L1, L1->stack); /* close all upvalues for this thread */
+ lua_assert(L1->openupval == NULL);
+ freestack(L, L1);
+ freestate(L, L1);
+}
+
+
+LUA_API lua_State *lua_open (void) {
+ lua_State *L = mallocstate(NULL);
+ if (L) { /* allocation OK? */
+ L->tt = LUA_TTHREAD;
+ L->marked = 0;
+ L->next = L->gclist = NULL;
+ preinit_state(L);
+ L->l_G = NULL;
+ if (luaD_rawrunprotected(L, f_luaopen, NULL) != 0) {
+ /* memory allocation error: free partial state */
+ close_state(L);
+ L = NULL;
+ }
+ }
+ lua_userstateopen(L);
+ return L;
+}
+
+
+static void callallgcTM (lua_State *L, void *ud) {
+ UNUSED(ud);
+ luaC_callGCTM(L); /* call GC metamethods for all udata */
+}
+
+
+LUA_API void lua_close (lua_State *L) {
+ lua_lock(L);
+ L = G(L)->mainthread; /* only the main thread can be closed */
+ luaF_close(L, L->stack); /* close all upvalues for this thread */
+ luaC_separateudata(L); /* separate udata that have GC metamethods */
+ L->errfunc = 0; /* no error function during GC metamethods */
+ do { /* repeat until no more errors */
+ L->ci = L->base_ci;
+ L->base = L->top = L->ci->base;
+ L->nCcalls = 0;
+ } while (luaD_rawrunprotected(L, callallgcTM, NULL) != 0);
+ lua_assert(G(L)->tmudata == NULL);
+ close_state(L);
+}
+