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new way to control stack overflow, controling only total size of the stack

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Roberto Ierusalimschy
2009-07-15 14:26:14 -03:00
parent abb85fc059
commit f76f4cb79d
10 changed files with 100 additions and 78 deletions
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30
luaconf.h
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@@ -1,5 +1,5 @@
/*
** $Id: luaconf.h,v 1.105 2009/06/18 18:19:36 roberto Exp roberto $
** $Id: luaconf.h,v 1.106 2009/07/01 16:16:40 roberto Exp roberto $
** Configuration file for Lua
** See Copyright Notice in lua.h
*/
@@ -417,31 +417,19 @@
/*
@@ LUAI_MAXCALLS limits the number of nested calls.
** CHANGE it if you need really deep recursive calls. This limit is
** arbitrary; its only purpose is to stop infinite recursion before
** exhausting memory.
*/
#define LUAI_MAXCALLS 20000
/*
@@ LUAI_MAXCSTACK limits the number of Lua stack slots that a C function
@* can use.
@@ LUAI_MAXSTACK limits the size of the Lua stack.
** CHANGE it if you need a different limit. This limit is arbitrary;
** its only purpose is to stop C functions to consume unlimited stack
** space.
** its only purpose is to stop Lua to consume unlimited stack
** space (and to reserve some numbers for pseudo-indices).
*/
/* life is simpler if stack size fits in an int (16 is an estimate
for the size of a Lua value) */
#if SHRT_MAX < (INT_MAX / 16)
#define LUAI_MCS_AUX SHRT_MAX
#if LUAI_BITSINT >= 32
#define LUAI_MAXSTACK 1000000
#else
#define LUAI_MCS_AUX (INT_MAX / 16)
#define LUAI_MAXSTACK 15000
#endif
/* reserve some space for pseudo-indices */
#define LUAI_MAXCSTACK (LUAI_MCS_AUX - 1000)
/* reserve some space for error handling */
#define LUAI_FIRSTPSEUDOIDX (-LUAI_MAXSTACK - 1000)