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/***********************************************************************/
/* */
/* Objective Caml */
/* */
/* 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. */
/* */
/***********************************************************************/
/* $Id$ */
/* Start-up code */
#include <stdio.h>
#include <stdlib.h>
#include "callback.h"
#include "custom.h"
#include "fail.h"
#include "gc.h"
#include "gc_ctrl.h"
#include "misc.h"
#include "mlvalues.h"
#include "osdeps.h"
#include "printexc.h"
#include "sys.h"
#ifdef HAS_UI
#include "ui.h"
#endif
extern int parser_trace;
header_t atom_table[256];
char * static_data_start, * static_data_end;
char * code_area_start, * code_area_end;
/* Initialize the atom table and the static data and code area limits. */
struct segment { char * begin; char * end; };
static void minmax_table(struct segment *table, char **min, char **max)
{
int i;
*min = table[0].begin;
*max = table[0].end;
for (i = 1; table[i].begin != 0; i++) {
if (table[i].begin < *min) *min = table[i].begin;
if (table[i].end > *max) *max = table[i].end;
}
}
static void init_atoms(void)
{
int i;
extern struct segment caml_data_segments[], caml_code_segments[];
for (i = 0; i < 256; i++) atom_table[i] = Make_header(0, i, Caml_white);
minmax_table(caml_data_segments, &static_data_start, &static_data_end);
minmax_table(caml_code_segments, &code_area_start, &code_area_end);
}
/* Configuration parameters and flags */
static unsigned long percent_free_init = Percent_free_def;
static unsigned long max_percent_free_init = Max_percent_free_def;
static unsigned long minor_heap_init = Minor_heap_def;
static unsigned long heap_chunk_init = Heap_chunk_def;
static unsigned long heap_size_init = Init_heap_def;
static unsigned long max_stack_init = Max_stack_def;
/* Parse the CAMLRUNPARAM variable */
/* The option letter for each runtime option is the first letter of the
last word of the ML name of the option (see [stdlib/gc.mli]).
Except for l (maximum stack size) and h (initial heap size).
*/
/* Note: option l is irrelevant to the native-code runtime. */
/* If you change these functions, see also their copy in byterun/startup.c */
static void scanmult (char *opt, long unsigned int *var)
{
char mult = ' ';
sscanf (opt, "=%lu%c", var, &mult);
sscanf (opt, "=0x%lx%c", var, &mult);
if (mult == 'k') *var = *var * 1024;
if (mult == 'M') *var = *var * (1024 * 1024);
if (mult == 'G') *var = *var * (1024 * 1024 * 1024);
}
static void parse_camlrunparam(void)
{
char *opt = getenv ("OCAMLRUNPARAM");
if (opt == NULL) opt = getenv ("CAMLRUNPARAM");
if (opt != NULL){
while (*opt != '\0'){
switch (*opt++){
case 's': scanmult (opt, &minor_heap_init); break;
case 'i': scanmult (opt, &heap_chunk_init); break;
case 'h': scanmult (opt, &heap_size_init); break;
case 'l': scanmult (opt, &max_stack_init); break;
case 'o': scanmult (opt, &percent_free_init); break;
case 'O': scanmult (opt, &max_percent_free_init); break;
case 'v': scanmult (opt, &verb_gc); break;
case 'p': parser_trace = 1; break;
}
}
}
}
/* These are termination hooks used by the systhreads library */
struct longjmp_buffer caml_termination_jmpbuf;
void (*caml_termination_hook)(void *) = NULL;
extern value caml_start_program (void);
extern void init_ieee_floats (void);
extern void init_signals (void);
void caml_main(char **argv)
{
char * exe_name;
#ifdef __linux__
static char proc_self_exe[256];
#endif
value res;
init_ieee_floats();
init_custom_operations();
#ifdef DEBUG
verb_gc = 63;
#endif
parse_camlrunparam();
init_gc (minor_heap_init, heap_size_init, heap_chunk_init,
percent_free_init, max_percent_free_init);
init_atoms();
init_signals();
exe_name = argv[0];
#ifdef __linux__
if (executable_name(proc_self_exe, sizeof(proc_self_exe)) == 0)
exe_name = proc_self_exe;
#endif
caml_sys_init(exe_name, argv);
if (sigsetjmp(caml_termination_jmpbuf.buf, 0)) {
if (caml_termination_hook != NULL) caml_termination_hook(NULL);
return;
}
res = caml_start_program();
if (Is_exception_result(res))
fatal_uncaught_exception(Extract_exception(res));
}
void caml_startup(char **argv)
{
caml_main(argv);
}
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