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authorLua Team <team@lua.org>1998-07-11 12:00:00 +0000
committerrepogen <>1998-07-11 12:00:00 +0000
commit377347776f1f3d820f92151f70bec667f96d5e6b (patch)
treecdb3ba26158df33547dfe765547177afcee119d1 /src/lstate.h
parent4f8c5d0f284e1f4da717aea5008915f185cd2e05 (diff)
downloadlua-github-3.1.tar.gz
Lua 3.13.1
Diffstat (limited to 'src/lstate.h')
-rw-r--r--src/lstate.h86
1 files changed, 86 insertions, 0 deletions
diff --git a/src/lstate.h b/src/lstate.h
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+/*
+** $Id: lstate.h,v 1.11 1998/06/24 13:33:00 roberto Exp $
+** Global State
+** See Copyright Notice in lua.h
+*/
+
+#ifndef lstate_h
+#define lstate_h
+
+#include <setjmp.h>
+
+#include "lobject.h"
+#include "lua.h"
+
+
+#define MAX_C_BLOCKS 10
+
+#define GARBAGE_BLOCK 150
+
+
+typedef int StkId; /* index to stack elements */
+
+struct Stack {
+ TObject *top;
+ TObject *stack;
+ TObject *last;
+};
+
+struct C_Lua_Stack {
+ StkId base; /* when Lua calls C or C calls Lua, points to */
+ /* the first slot after the last parameter. */
+ StkId lua2C; /* points to first element of "array" lua2C */
+ int num; /* size of "array" lua2C */
+};
+
+
+typedef struct {
+ int size;
+ int nuse; /* number of elements (including EMPTYs) */
+ TaggedString **hash;
+} stringtable;
+
+
+enum Status {LOCK, HOLD, FREE, COLLECTED};
+
+struct ref {
+ TObject o;
+ enum Status status;
+};
+
+
+struct lua_State {
+ /* thread-specific state */
+ struct Stack stack; /* Lua stack */
+ struct C_Lua_Stack Cstack; /* C2lua struct */
+ jmp_buf *errorJmp; /* current error recover point */
+ char *Mbuffer; /* global buffer */
+ char *Mbuffbase; /* current first position of Mbuffer */
+ int Mbuffsize; /* size of Mbuffer */
+ int Mbuffnext; /* next position to fill in Mbuffer */
+ struct C_Lua_Stack Cblocks[MAX_C_BLOCKS];
+ int numCblocks; /* number of nested Cblocks */
+ /* global state */
+ TObject errorim; /* error tag method */
+ GCnode rootproto; /* list of all prototypes */
+ GCnode rootcl; /* list of all closures */
+ GCnode roottable; /* list of all tables */
+ GCnode rootglobal; /* list of strings with global values */
+ stringtable *string_root; /* array of hash tables for strings and udata */
+ struct IM *IMtable; /* table for tag methods */
+ int IMtable_size; /* size of IMtable */
+ int last_tag; /* last used tag in IMtable */
+ struct ref *refArray; /* locked objects */
+ int refSize; /* size of refArray */
+ unsigned long GCthreshold;
+ unsigned long nblocks; /* number of 'blocks' currently allocated */
+};
+
+
+extern lua_State *lua_state;
+
+
+#define L lua_state
+
+
+#endif