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