From 2f82bf6fe940557fb5258c65c03e18f097ff831f Mon Sep 17 00:00:00 2001 From: Roberto Ierusalimschy Date: Wed, 24 Nov 2004 16:55:56 -0200 Subject: [PATCH] better support for 64-bit machines --- lapi.c | 4 ++-- lgc.c | 4 ++-- llimits.h | 23 ++++++----------------- luaconf.h | 54 ++++++++++++++++++++++++++++++++++++------------------ 4 files changed, 46 insertions(+), 39 deletions(-) diff --git a/lapi.c b/lapi.c index 26b2c3b5..5e57f61c 100644 --- a/lapi.c +++ b/lapi.c @@ -1,5 +1,5 @@ /* -** $Id: lapi.c,v 2.18 2004/08/30 13:44:44 roberto Exp roberto $ +** $Id: lapi.c,v 2.19 2004/09/15 20:39:42 roberto Exp roberto $ ** Lua API ** See Copyright Notice in lua.h */ @@ -842,7 +842,7 @@ LUA_API int lua_gc (lua_State *L, int what, int data) { g = G(L); switch (what) { case LUA_GCSTOP: { - g->GCthreshold = MAXLMEM; + g->GCthreshold = MAX_LUMEM; break; } case LUA_GCRESTART: { diff --git a/lgc.c b/lgc.c index da93007d..9ad6b037 100644 --- a/lgc.c +++ b/lgc.c @@ -1,5 +1,5 @@ /* -** $Id: lgc.c,v 2.14 2004/10/08 16:00:34 roberto Exp roberto $ +** $Id: lgc.c,v 2.15 2004/11/19 15:52:40 roberto Exp roberto $ ** Garbage Collector ** See Copyright Notice in lua.h */ @@ -555,7 +555,7 @@ static void atomic (lua_State *L) { g->sweepgc = &g->rootgc; g->gcstate = GCSsweepstring; aux = g->gcgenerational; - g->gcgenerational = (g->estimate <= 4*g->prevestimate/2); + g->gcgenerational = (g->estimate/2 <= g->prevestimate); if (!aux) /* last collection was full? */ g->prevestimate = g->estimate; /* keep estimate of last full collection */ g->estimate = g->totalbytes - udsize; /* first estimate */ diff --git a/llimits.h b/llimits.h index a07edf92..1c9bc4e6 100644 --- a/llimits.h +++ b/llimits.h @@ -1,5 +1,5 @@ /* -** $Id: llimits.h,v 1.59 2004/06/23 15:57:29 roberto Exp roberto $ +** $Id: llimits.h,v 1.60 2004/09/10 17:30:46 roberto Exp roberto $ ** Limits, basic types, and some other `installation-dependent' definitions ** See Copyright Notice in lua.h */ @@ -18,22 +18,9 @@ typedef LUA_UINT32 lu_int32; -typedef LUA_INT32 l_int32; +typedef LU_MEM lu_mem; - -/* -** an unsigned integer big enough to count the total memory used by Lua; -** it should be at least as large as `size_t' -*/ -typedef lu_int32 lu_mem; - - -/* -** a signed integer big enough to count the total memory used by Lua; -** it should be at least as large as `size_t' -*/ -typedef l_int32 l_mem; -#define MAXLMEM LUA_MAXINT32 +typedef L_MEM l_mem; @@ -43,6 +30,8 @@ typedef unsigned char lu_byte; #define MAX_SIZET ((size_t)(~(size_t)0)-2) +#define MAX_LUMEM ((lu_mem)(~(lu_mem)0)-2) + #define MAX_INT (INT_MAX-2) /* maximum value of an int (-2 for safety) */ @@ -51,7 +40,7 @@ typedef unsigned char lu_byte; ** this is for hashing only; there is no problem if the integer ** cannot hold the whole pointer value */ -#define IntPoint(p) ((unsigned int)(p)) +#define IntPoint(p) ((unsigned int)(lu_mem)(p)) diff --git a/luaconf.h b/luaconf.h index 46c4998c..389cb521 100644 --- a/luaconf.h +++ b/luaconf.h @@ -1,5 +1,5 @@ /* -** $Id: luaconf.h,v 1.15 2004/10/18 18:07:31 roberto Exp roberto $ +** $Id: luaconf.h,v 1.16 2004/11/18 19:53:49 roberto Exp roberto $ ** Configuration file for Lua ** See Copyright Notice in lua.h */ @@ -46,8 +46,11 @@ #define LUA_NUMBER_FMT "%.14g" -/* type for integer functions */ -#define LUA_INTEGER long +/* +** type for integer functions +** on most machines, `ptrdiff_t' gives a reasonable size for integers +*/ +#define LUA_INTEGER ptrdiff_t /* mark for all API functions */ @@ -130,12 +133,38 @@ #define api_check(L,o) lua_assert(o) -/* an unsigned integer with at least 32 bits */ -#define LUA_UINT32 unsigned long +/* number of bits in an `int' */ +/* avoid overflows in comparison */ +#if INT_MAX-20 < 32760 +#define LUA_BITSINT 16 +#elif INT_MAX > 2147483640L +/* `int' has at least 32 bits */ +#define LUA_BITSINT 32 +#else +#error "you must define LUA_BITSINT with number of bits in an integer" +#endif + -/* a signed integer with at least 32 bits */ +/* +** L_UINT32: unsigned integer with at least 32 bits +** L_INT32: signed integer with at least 32 bits +** LU_MEM: an unsigned integer big enough to count the total memory used by Lua +** L_MEM: a signed integer big enough to count the total memory used by Lua +*/ +#if LUA_BITSINT >= 32 +#define LUA_UINT32 unsigned int +#define LUA_INT32 int +#define LUA_MAXINT32 INT_MAX +#define LU_MEM size_t +#define L_MEM ptrdiff_t +#else +/* 16-bit ints */ +#define LUA_UINT32 unsigned long #define LUA_INT32 long #define LUA_MAXINT32 LONG_MAX +#define LU_MEM LUA_UINT32 +#define L_MEM ptrdiff_t +#endif /* maximum depth for calls (unsigned short) */ @@ -174,7 +203,7 @@ /* function to convert a lua_Number to int (with any rounding method) */ #if defined(__GNUC__) && defined(__i386) #define lua_number2int(i,d) __asm__ ("fistpl %0":"=m"(i):"t"(d):"st") -#elif 0 +#elif defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199900L) /* on machines compliant with C99, you can try `lrint' */ #include #define lua_number2int(i,d) ((i)=lrint(d)) @@ -199,17 +228,6 @@ #define LUA_UACNUMBER double -/* number of bits in an `int' */ -/* avoid overflows in comparison */ -#if INT_MAX-20 < 32760 -#define LUA_BITSINT 16 -#elif INT_MAX > 2147483640L -/* machine has at least 32 bits */ -#define LUA_BITSINT 32 -#else -#error "you must define LUA_BITSINT with number of bits in an integer" -#endif - /* type to ensure maximum alignment */ #define LUSER_ALIGNMENT_T union { double u; void *s; long l; }