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added proper code to trace garbage collection

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This commit is contained in:
Roberto Ierusalimschy
2010-04-02 11:37:41 -03:00
parent 9eb832de54
commit e54668b696
2 changed files with 24 additions and 8 deletions
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8
lgc.c
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@@ -1,5 +1,5 @@
/*
** $Id: lgc.c,v 2.74 2010/03/26 20:58:11 roberto Exp roberto $
** $Id: lgc.c,v 2.75 2010/03/29 17:43:14 roberto Exp roberto $
** Garbage Collector
** See Copyright Notice in lua.h
*/
@@ -825,10 +825,7 @@ void luaC_runtilstate (lua_State *L, int statesmask) {
static void generationalcollection (lua_State *L) {
static int c = 0;
static int prev = 0;
global_State *g = G(L);
int a = g->totalbytes;
lua_assert(g->gcstate == GCSpropagate);
if (g->lastmajormem == 0) { /* signal for another major collection? */
luaC_fullgc(L, 0); /* perform a full regular collection */
@@ -841,9 +838,6 @@ int a = g->totalbytes;
g->lastmajormem = 0; /* signal for a major collection */
}
g->GCthreshold = (g->totalbytes/100) * g->gcpause;
/*printf("count: %d old: %d new: %d dif: %d lim: %d threshold: %d\n",
c++, a, g->totalbytes, g->totalbytes - prev, g->lastmajormem, g->GCthreshold);*/
prev = g->totalbytes;
}

24
lmem.c
View File

@@ -1,5 +1,5 @@
/*
** $Id: lmem.c,v 1.73 2006/09/14 18:42:28 roberto Exp roberto $
** $Id: lmem.c,v 1.74 2009/12/16 16:42:58 roberto Exp roberto $
** Interface to Memory Manager
** See Copyright Notice in lua.h
*/
@@ -94,6 +94,28 @@ void *luaM_realloc_ (lua_State *L, void *block, size_t osize, size_t nsize) {
}
lua_assert((nsize == 0) == (newblock == NULL));
g->totalbytes = (g->totalbytes - realosize) + nsize;
#if defined(TRACEMEM)
{ /* auxiliar patch to monitor garbage collection.
** To plot, gnuplot with following command:
** plot TRACEMEM using 1:2 with lines, TRACEMEM using 1:3 with lines
*/
static unsigned long total = 0; /* our "time" */
static lu_mem last = 0; /* last totalmem that generated an output */
static FILE *f = NULL; /* output file */
if (nsize <= osize) total += 1; /* "time" always grow */
else total += (nsize - osize);
if ((int)g->totalbytes - (int)last > 1000 ||
(int)g->totalbytes - (int)last < -1000) {
last = g->totalbytes;
if (f == NULL) f = fopen(TRACEMEM, "w");
fprintf(f, "%lu %u %u %d\n", total,
g->totalbytes,
g->GCthreshold < MAX_LUMEM ? g->GCthreshold : 0,
g->gcstate);
}
}
#endif
return newblock;
}