src/s4u/s4u_host.cpp

   1 /* Copyright (c) 2006-2014. The SimGrid Team.
   2  * All rights reserved.                                                     */
   3
   4 /* This program is free software; you can redistribute it and/or modify it
   5  * under the terms of the license (GNU LGPL) which comes with this package. */
   6
   7 #include "xbt/log.h"
   8 #include "msg/msg_private.h"
   9 #include "simix/smx_process_private.h"
  10
  11 #include "simgrid/s4u/host.hpp"
  12
  13 using namespace simgrid;
  14
  15 boost::unordered_map<std::string, simgrid::s4u::Host*> *simgrid::s4u::Host::hosts
  16                 = new boost::unordered_map<std::string, simgrid::s4u::Host*>();
  17
  18 s4u::Host::Host(const char*name) {
  19         p_sghost = sg_host_by_name(name);
  20         if (p_sghost==NULL)
  21                 xbt_die("No such host: %s",name); //FIXME: raise an exception
  22 }
  23
  24 s4u::Host *s4u::Host::byName(std::string name) {
  25         s4u::Host * res = NULL;
  26         try {
  27                 res = hosts->at(name);
  28         } catch (std::out_of_range& e) {}
  29
  30         if (res==NULL) {
  31                 res = new s4u::Host(name.c_str());
  32                 hosts->insert({name,res});
  33         }
  34         return res;
  35 }
  36 s4u::Host *s4u::Host::current(){
  37         smx_process_t smx_proc = SIMIX_process_self();
  38         if (smx_proc == NULL)
  39                 xbt_die("Cannot call Host::current() from the maestro context");
  40
  41         return s4u::Host::byName(SIMIX_host_get_name(SIMIX_process_get_host(smx_proc)));
  42 }
  43
  44 const char* s4u::Host::getName() {
  45         return sg_host_name(p_sghost);
  46 }
  47
  48 void s4u::Host::turnOn() {
  49         simcall_host_on(p_sghost);
  50 }
  51 void s4u::Host::turnOff() {
  52         simcall_host_off(p_sghost);
  53 }
  54 bool s4u::Host::isOn() {
  55         return simcall_host_get_state(p_sghost);
  56 }