commit c6254dceffca200e4111f28af4230b6c892ec0d6
parent a56d889f7225a3cfdfa6dfeb55db2b4ae22f1572
Author: Roberto Ierusalimschy <roberto@inf.puc-rio.br>
Date: Mon, 13 Dec 2004 10:14:49 -0200
a different option for the GC
Diffstat:
7 files changed, 21 insertions(+), 19 deletions(-)
diff --git a/lapi.c b/lapi.c
@@ -1,5 +1,5 @@
/*
-** $Id: lapi.c,v 2.21 2004/12/03 20:50:25 roberto Exp roberto $
+** $Id: lapi.c,v 2.22 2004/12/06 17:53:42 roberto Exp roberto $
** Lua API
** See Copyright Notice in lua.h
*/
@@ -867,9 +867,9 @@ LUA_API int lua_gc (lua_State *L, int what, int data) {
luaC_step(L);
break;
}
- case LUA_GCSETSTEPMUL: {
- res = g->stepmul;
- g->stepmul = data;
+ case LUA_GCSETPACE: {
+ res = g->gcpace;
+ g->gcpace = data;
break;
}
case LUA_GCSETINCMODE: {
diff --git a/lbaselib.c b/lbaselib.c
@@ -1,5 +1,5 @@
/*
-** $Id: lbaselib.c,v 1.161 2004/12/06 17:53:42 roberto Exp roberto $
+** $Id: lbaselib.c,v 1.162 2004/12/07 18:31:34 roberto Exp roberto $
** Basic library
** See Copyright Notice in lua.h
*/
@@ -182,9 +182,9 @@ static int luaB_gcinfo (lua_State *L) {
static int luaB_collectgarbage (lua_State *L) {
static const char *const opts[] = {"stop", "restart", "collect",
- "count", "step", "setstepmul", "setincmode", NULL};
+ "count", "step", "setpace", "setincmode", NULL};
static const int optsnum[] = {LUA_GCSTOP, LUA_GCRESTART, LUA_GCCOLLECT,
- LUA_GCCOUNT, LUA_GCSTEP, LUA_GCSETSTEPMUL, LUA_GCSETINCMODE};
+ LUA_GCCOUNT, LUA_GCSTEP, LUA_GCSETPACE, LUA_GCSETINCMODE};
int o = luaL_findstring(luaL_optstring(L, 1, "collect"), opts);
int ex = luaL_optint(L, 2, 0);
luaL_argcheck(L, o >= 0, 1, "invalid option");
diff --git a/lgc.c b/lgc.c
@@ -1,5 +1,5 @@
/*
-** $Id: lgc.c,v 2.17 2004/11/24 19:20:21 roberto Exp roberto $
+** $Id: lgc.c,v 2.18 2004/12/06 17:53:42 roberto Exp roberto $
** Garbage Collector
** See Copyright Notice in lua.h
*/
@@ -27,6 +27,7 @@
#define GCSWEEPMAX 10
#define GCSWEEPCOST 30
#define GCFINALIZECOST 100
+#define GCSTEPMUL 8
#define FIXEDMASK bitmask(FIXEDBIT)
@@ -621,18 +622,17 @@ static l_mem singlestep (lua_State *L) {
void luaC_step (lua_State *L) {
global_State *g = G(L);
- l_mem lim = (g->totalbytes - (g->GCthreshold - GCSTEPSIZE)) * g->stepmul;
+ l_mem lim = (g->totalbytes - (g->GCthreshold - GCSTEPSIZE)) * GCSTEPMUL;
do {
lim -= singlestep(L);
if (g->gcstate == GCSpause)
break;
} while (lim > 0 || !g->incgc);
- if (g->incgc)
+ if (g->gcstate != GCSpause)
g->GCthreshold = g->totalbytes + GCSTEPSIZE; /* - lim/STEPMUL; */
else {
lua_assert(g->totalbytes >= g->estimate);
- lua_assert(g->gcstate == GCSpause);
- g->GCthreshold = 2*g->estimate;
+ g->GCthreshold = g->estimate + ((g->estimate/GCDIV) * g->gcpace);
}
}
diff --git a/llimits.h b/llimits.h
@@ -1,5 +1,5 @@
/*
-** $Id: llimits.h,v 1.60 2004/09/10 17:30:46 roberto Exp roberto $
+** $Id: llimits.h,v 1.61 2004/11/24 18:55:56 roberto Exp roberto $
** Limits, basic types, and some other `installation-dependent' definitions
** See Copyright Notice in lua.h
*/
@@ -73,6 +73,8 @@ typedef LUA_UACNUMBER l_uacNumber;
typedef lu_int32 Instruction;
+/* divisor for GC pace */
+#define GCDIV 8
/* maximum stack for a Lua function */
#define MAXSTACK 250
diff --git a/lstate.c b/lstate.c
@@ -1,5 +1,5 @@
/*
-** $Id: lstate.c,v 2.17 2004/11/24 19:20:21 roberto Exp roberto $
+** $Id: lstate.c,v 2.18 2004/12/06 17:53:42 roberto Exp roberto $
** Global State
** See Copyright Notice in lua.h
*/
@@ -193,7 +193,7 @@ LUA_API lua_State *lua_newstate (lua_Alloc f, void *ud) {
setnilvalue(gval(g->dummynode));
gnext(g->dummynode) = NULL;
g->totalbytes = sizeof(LG);
- g->stepmul = STEPMUL;
+ g->gcpace = GCDIV;
g->incgc = 1;
if (luaD_rawrunprotected(L, f_luaopen, NULL) != 0) {
/* memory allocation error: free partial state */
diff --git a/lstate.h b/lstate.h
@@ -1,5 +1,5 @@
/*
-** $Id: lstate.h,v 2.8 2004/09/15 20:39:42 roberto Exp roberto $
+** $Id: lstate.h,v 2.9 2004/12/06 17:53:42 roberto Exp roberto $
** Global State
** See Copyright Notice in lua.h
*/
@@ -85,7 +85,7 @@ typedef struct global_State {
lu_mem totalbytes; /* number of bytes currently allocated */
lu_mem estimate; /* an estimate of number of bytes actually in use */
lu_mem prevestimate; /* previous estimate */
- int stepmul; /* relative `speed' of the GC */
+ int gcpace; /* relative `speed' of the GC */
int incgc; /* 0 if GC is done non-incrementally */
lua_CFunction panic; /* to be called in unprotected errors */
TValue _registry;
diff --git a/lua.h b/lua.h
@@ -1,5 +1,5 @@
/*
-** $Id: lua.h,v 1.195 2004/12/01 15:50:18 roberto Exp roberto $
+** $Id: lua.h,v 1.196 2004/12/06 17:53:42 roberto Exp roberto $
** Lua - An Extensible Extension Language
** Tecgraf: Computer Graphics Technology Group, PUC-Rio, Brazil
** http://www.lua.org mailto:info@lua.org
@@ -225,7 +225,7 @@ LUA_API int lua_threadstatus (lua_State *L);
#define LUA_GCCOLLECT 2
#define LUA_GCCOUNT 3
#define LUA_GCSTEP 4
-#define LUA_GCSETSTEPMUL 5
+#define LUA_GCSETPACE 5
#define LUA_GCSETINCMODE 6
LUA_API int lua_gc (lua_State *L, int what, int data);
