clib/nit_main.c

   1 /* This file is part of NIT ( http://www.nitlanguage.org ).
   2  *
   3  * Copyright 2006-2009 Jean Privat <jean@pryen.org>
   4  *
   5  * This file is free software, which comes along with NIT.  This software is
   6  * distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
   7  * without  even  the implied warranty of  MERCHANTABILITY or  FITNESS FOR A
   8  * PARTICULAR PURPOSE.  You can modify it is you want,  provided this header
   9  * is kept unaltered, and a notification of the changes is added.
  10  * You  are  allowed  to  redistribute it and sell it, alone or is a part of
  11  * another product.
  12  */
  13
  14 #include "nit_common.h"
  15 #include <signal.h>
  16 #include <stdarg.h>
  17
  18 #ifdef WITH_LIBGC
  19 #define GC_DEBUG
  20 #include <gc/gc.h>
  21 int nolibgc = 0;
  22 void *simple_alloc(size_t s0);
  23 void *alloc(size_t s0)
  24 {
  25         if (!nolibgc) { return GC_MALLOC(s0); }
  26         else return simple_alloc(s0);
  27 }
  28 #define alloc simple_alloc
  29 #endif
  30
  31 void * alloc(size_t s0)
  32 {
  33         static char * alloc_pos = NULL;
  34         static size_t alloc_size = 0;
  35         void * res;
  36         size_t s = ((s0+3)/4)*4;
  37         if(alloc_size < s) {
  38                 alloc_size = s + 1024*1024;
  39                 alloc_pos = (char *)calloc(alloc_size, 1);
  40         }
  41         res = alloc_pos;
  42         alloc_size -= s;
  43         alloc_pos += s;
  44         return res;
  45 }
  46
  47 int glob_argc;
  48 char **glob_argv;
  49 val_t G_sys;
  50
  51 void exithandler(int s) {
  52         fprintf(stderr, "Recieved signal %d\n", s);
  53         nit_exit(1);
  54 }
  55 void prepare_signals(void) {
  56 #if WITH_LIBGC
  57         nolibgc = (getenv("NIT_NOLIBGC") != NULL);
  58         if (!nolibgc) {
  59                 GC_INIT();
  60         }
  61 #endif
  62         signal(SIGINT,exithandler);
  63         signal(SIGABRT,exithandler);
  64         signal(SIGSEGV,exithandler);
  65         signal(SIGILL, exithandler);
  66         signal(SIGFPE, exithandler);
  67         signal(SIGTERM,exithandler);
  68         signal(SIGBUS, exithandler);
  69 }
  70 struct trace_t *tracehead = NULL;
  71 void nit_exit(int i) {
  72         fprintf(stderr, ",---- Stack trace -- - -  -\n");
  73         while(tracehead != NULL) {
  74                 fprintf(stderr, "| %s (%s:%d)\n", tracehead->meth, tracehead->file, tracehead->line);
  75                 if (tracehead == tracehead->prev) break;
  76                 tracehead = tracehead->prev;
  77         }
  78         fprintf(stderr, "`------------------- - -  -\n");
  79         exit(i);
  80 }