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/***********************************************************************/
/* */
/* OCaml */
/* */
/* Xavier Leroy and Damien Doligez, INRIA Rocquencourt */
/* */
/* Copyright 1996 Institut National de Recherche en Informatique et */
/* en Automatique. All rights reserved. This file is distributed */
/* under the terms of the GNU Library General Public License, with */
/* the special exception on linking described in file ../LICENSE. */
/* */
/***********************************************************************/
/* Some runtime initialization functions that are common to bytecode
and native code. */
#include <stdio.h>
#include "caml/backtrace.h"
#include "caml/memory.h"
#include "caml/startup_aux.h"
/* Initialize the atom table */
CAMLexport header_t caml_atom_table[256];
void caml_init_atom_table(void)
{
int i;
for(i = 0; i < 256; i++) caml_atom_table[i] = Make_header(0, i, Caml_white);
if (caml_page_table_add(In_static_data,
caml_atom_table, caml_atom_table + 256) != 0) {
caml_fatal_error("Fatal error: not enough memory for initial page table");
}
}
/* Parse the OCAMLRUNPARAM environment variable. */
uintnat caml_init_percent_free = Percent_free_def;
uintnat caml_init_max_percent_free = Max_percent_free_def;
uintnat caml_init_minor_heap_wsz = Minor_heap_def;
uintnat caml_init_heap_chunk_sz = Heap_chunk_def;
uintnat caml_init_heap_wsz = Init_heap_def;
uintnat caml_init_max_stack_wsz = Max_stack_def;
extern int caml_parser_trace;
uintnat caml_trace_level = 0;
static void scanmult (char *opt, uintnat *var)
{
char mult = ' ';
unsigned int val = 1;
sscanf (opt, "=%u%c", &val, &mult);
sscanf (opt, "=0x%x%c", &val, &mult);
switch (mult) {
case 'k': *var = (uintnat) val * 1024; break;
case 'M': *var = (uintnat) val * (1024 * 1024); break;
case 'G': *var = (uintnat) val * (1024 * 1024 * 1024); break;
default: *var = (uintnat) val; break;
}
}
void caml_parse_ocamlrunparam(void)
{
char *opt = getenv ("OCAMLRUNPARAM");
uintnat p;
if (opt == NULL) opt = getenv ("CAMLRUNPARAM");
if (opt != NULL){
while (*opt != '\0'){
switch (*opt++){
case 'a': scanmult (opt, &p); caml_set_allocation_policy (p); break;
case 'b': scanmult (opt, &p); caml_record_backtrace(Val_bool (p)); break;
case 'h': scanmult (opt, &caml_init_heap_wsz); break;
case 'i': scanmult (opt, &caml_init_heap_chunk_sz); break;
case 'l': scanmult (opt, &caml_init_max_stack_wsz); break;
case 'o': scanmult (opt, &caml_init_percent_free); break;
case 'O': scanmult (opt, &caml_init_max_percent_free); break;
case 'p': scanmult (opt, &p); caml_parser_trace = p; break;
case 'R': break; /* see stdlib/hashtbl.mli */
case 's': scanmult (opt, &caml_init_minor_heap_wsz); break;
case 't': scanmult (opt, &caml_trace_level); break;
case 'v': scanmult (opt, &caml_verb_gc); break;
case 'W': scanmult (opt, &caml_runtime_warnings); break;
}
while (*opt != '\0'){
if (*opt++ == ',') break;
}
}
}
}
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