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core: Grow gc arena gradually.

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* mes.c: (gc_up_arena): New function.
 (gc): Use it when possible.
 (gc_init_cells, gc_init_news): New function.
 (mes_symbols): Use them.
This commit is contained in:
Jan Nieuwenhuizen 2016-12-11 08:23:15 +01:00
parent e4e29f00b0
commit 0bdad95f61
1 changed files with 40 additions and 23 deletions
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63
mes.c
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@ -21,6 +21,7 @@
#define _GNU_SOURCE
#include <assert.h>
#include <ctype.h>
#include <errno.h>
#include <limits.h>
#include <stdio.h>
#include <string.h>
@ -32,11 +33,8 @@
#define QUASISYNTAX 0
#define ENV_CACHE 1
//int ARENA_SIZE = 200000000;
// 30101417
int ARENA_SIZE = 30000000;
int GC_SAFETY = 10000;
int GC_FREE = 20000;
int ARENA_SIZE = 100000;
int GC_SAFETY = 100;
typedef long SCM;
enum type_t {CHAR, FUNCTION, MACRO, NUMBER, PAIR, SPECIAL, STRING, SYMBOL, REF, VALUES, VECTOR, BROKEN_HEART};
@ -894,28 +892,29 @@ make_tmps (scm* cells)
// Jam Collector
SCM g_symbol_max;
scm *
gc_news ()
{
g_news = (scm *)malloc (ARENA_SIZE*sizeof(scm));
g_news[0].type = VECTOR;
g_news[0].length = 1000;
g_news[0].vector = 0;
g_news++;
g_news[0].type = CHAR;
g_news[0].value = 'n';
return g_news;
}
bool g_debug = false;
SCM
gc_up_arena ()
{
ARENA_SIZE *= 2;
void *p = realloc (g_cells-1, 2*ARENA_SIZE*sizeof(scm));
if (!p)
{
if (g_debug) fprintf (stderr, "cannot up arena: %s: arena=%d\n", strerror (errno), 2*ARENA_SIZE);
return cell_unspecified;
}
g_cells = (scm*)p;
g_cells++;
gc_init_news ();
}
SCM
gc ()
{
if (g_debug) fprintf (stderr, "***gc[%d]...", g_free.value);
g_free.value = 1;
if (!g_news)
gc_news ();
if (g_cells < g_news) gc_up_arena ();
for (int i=g_free.value; i<g_symbol_max; i++)
gc_copy (i);
make_tmps (g_news);
@ -1028,17 +1027,35 @@ add_environment (SCM a, char const *name, SCM x)
}
SCM
mes_symbols () ///((internal))
gc_init_cells ()
{
g_cells = (scm *)malloc (ARENA_SIZE*sizeof(scm));
g_cells = (scm *)malloc (2*ARENA_SIZE*sizeof(scm));
g_cells[0].type = VECTOR;
g_cells[0].length = 1000;
g_cells[0].vector = 0;
g_cells++;
g_cells[0].type = CHAR;
g_cells[0].value = 'c';
g_free.value = 1; // 0 is tricky
}
SCM
gc_init_news ()
{
g_news = g_cells-1 + ARENA_SIZE;
g_news[0].type = VECTOR;
g_news[0].length = 1000;
g_news[0].vector = 0;
g_news++;
g_news[0].type = CHAR;
g_news[0].value = 'n';
}
SCM
mes_symbols () ///((internal))
{
gc_init_cells ();
gc_init_news ();
#include "mes.symbols.i"