gold/main.cc

   1 // main.cc -- gold main function.
   2
   3 // Copyright 2006, 2007 Free Software Foundation, Inc.
   4 // Written by Ian Lance Taylor <iant@google.com>.
   5
   6 // This file is part of gold.
   7
   8 // This program is free software; you can redistribute it and/or modify
   9 // it under the terms of the GNU General Public License as published by
  10 // the Free Software Foundation; either version 3 of the License, or
  11 // (at your option) any later version.
  12
  13 // This program is distributed in the hope that it will be useful,
  14 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 // GNU General Public License for more details.
  17
  18 // You should have received a copy of the GNU General Public License
  19 // along with this program; if not, write to the Free Software
  20 // Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
  21 // MA 02110-1301, USA.
  22
  23 #include "gold.h"
  24
  25 #ifdef HAVE_MALLINFO
  26 #include <malloc.h>
  27 #endif
  28 #include "libiberty.h"
  29
  30 #include "options.h"
  31 #include "parameters.h"
  32 #include "errors.h"
  33 #include "dirsearch.h"
  34 #include "workqueue.h"
  35 #include "object.h"
  36 #include "symtab.h"
  37 #include "layout.h"
  38
  39 using namespace gold;
  40
  41 int
  42 main(int argc, char** argv)
  43 {
  44 #if defined (HAVE_SETLOCALE) && defined (HAVE_LC_MESSAGES)
  45   setlocale (LC_MESSAGES, "");
  46 #endif
  47 #if defined (HAVE_SETLOCALE)
  48   setlocale (LC_CTYPE, "");
  49 #endif
  50   bindtextdomain (PACKAGE, LOCALEDIR);
  51   textdomain (PACKAGE);
  52
  53   program_name = argv[0];
  54
  55   Errors errors(program_name);
  56
  57   // Initialize the global parameters, to let random code get to the
  58   // errors object.
  59   initialize_parameters(&errors);
  60
  61   // Handle the command line options.
  62   Command_line command_line;
  63   command_line.process(argc - 1, argv + 1);
  64
  65   long start_time = 0;
  66   if (command_line.options().print_stats())
  67     start_time = get_run_time();
  68
  69   // Store some options in the globally accessible parameters.
  70   set_parameters_from_options(&command_line.options());
  71
  72   // The work queue.
  73   Workqueue workqueue(command_line.options());
  74
  75   // The list of input objects.
  76   Input_objects input_objects;
  77
  78   // The symbol table.  We're going to guess here how many symbols
  79   // we're going to see based on the number of input files.  Even when
  80   // this is off, it means at worse we don't quite optimize hashtable
  81   // resizing as well as we could have (perhap using more memory).
  82   Symbol_table symtab(command_line.number_of_input_files() * 1024);
  83
  84   // The layout object.
  85   Layout layout(command_line.options());
  86
  87   // Get the search path from the -L options.
  88   Dirsearch search_path;
  89   search_path.initialize(&workqueue, &command_line.options().search_path());
  90
  91   // Queue up the first set of tasks.
  92   queue_initial_tasks(command_line.options(), search_path,
  93                       command_line, &workqueue, &input_objects,
  94                       &symtab, &layout);
  95
  96   // Run the main task processing loop.
  97   workqueue.process(0);
  98
  99   if (command_line.options().print_stats())
 100     {
 101       long run_time = get_run_time() - start_time;
 102       fprintf(stderr, _("%s: total run time: %ld.%06ld seconds\n"),
 103               program_name, run_time / 1000000, run_time % 1000000);
 104 #ifdef HAVE_MALLINFO
 105       struct mallinfo m = mallinfo();
 106       fprintf(stderr, _("%s: total space allocated by malloc: %d bytes\n"),
 107               program_name, m.arena);
 108 #endif
 109       File_read::print_stats();
 110       fprintf(stderr, _("%s: output file size: %lld bytes\n"),
 111               program_name, static_cast<long long>(layout.output_file_size()));
 112       symtab.print_stats();
 113       layout.print_stats();
 114     }
 115
 116   gold_exit(errors.error_count() == 0);
 117 }