src/bindings/ruby/rb_msg_process.c

   1 /*
   2  * Copyright 2010, The SimGrid Team. All right reserved.
   3  *
   4  * This program is free software; you can redistribute
   5  * it and/or modify it under the terms of the license
   6  *(GNU LGPL) which comes with this package.
   7  */
   8
   9 #include "msg/private.h" /* s_simdata_process_t */
  10 #include "bindings/ruby_bindings.h"
  11
  12 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(ruby,bindings,"Ruby Bindings");
  13
  14 /*
  15  * Functions for Ruby Process Management (Up Calls)
  16  */
  17
  18 // get Ruby Process Name
  19 VALUE rb_process_getName(VALUE ruby_process) {
  20   return rb_funcall(ruby_process,rb_intern("getName"),0);
  21 }
  22
  23 // Get  Process ID
  24 VALUE rb_process_getID(VALUE ruby_process) {
  25   return rb_funcall(ruby_process,rb_intern("getID"),0);
  26 }
  27
  28 // Get Bind
  29 VALUE rb_process_getBind(VALUE ruby_process) {
  30   return rb_funcall(ruby_process,rb_intern("getBind"),0);
  31 }
  32
  33
  34 // Set Bind
  35 void rb_process_setBind(VALUE ruby_process,long bind) {
  36   VALUE r_bind = LONG2FIX(bind);
  37   rb_funcall(ruby_process,rb_intern("setBind"),1,r_bind);
  38 }
  39
  40 // isAlive
  41 VALUE rb_process_isAlive(VALUE ruby_process) {
  42   return rb_funcall(ruby_process,rb_intern("alive?"),0);
  43 }
  44
  45 // Kill Process
  46 void rb_process_kill_up(VALUE ruby_process) {
  47   rb_funcall(ruby_process,rb_intern("kill"),0);
  48 }
  49
  50 // join Process
  51 void rb_process_join( VALUE ruby_process ) {
  52   rb_funcall(ruby_process,rb_intern("join"),0);
  53 }
  54
  55 // unschedule Process
  56 void rb_process_unschedule( VALUE ruby_process ) {
  57   rb_funcall(ruby_process,rb_intern("unschedule"),0);
  58 }
  59
  60 // schedule Process
  61 void rb_process_schedule( VALUE ruby_process ) {
  62   rb_funcall(ruby_process,rb_intern("schedule"),0);
  63 }
  64
  65 /***************************************************
  66
  67 Function for Native Process ( Bound ) Management
  68
  69 Methods Belong to MSG Module
  70
  71  ****************************************************/
  72
  73 // Process To Native
  74 m_process_t rb_process_to_native(VALUE ruby_process) {
  75   VALUE id = rb_process_getBind(ruby_process);
  76   if (!id) {
  77     rb_raise(rb_eRuntimeError,"Process Not Bound >>> id_Bind Null");
  78     return NULL;
  79   }
  80   long l_id= FIX2LONG(id);
  81   return (m_process_t)l_id;
  82 }
  83
  84 // Bind Process
  85 void rb_process_bind(VALUE ruby_process,m_process_t process) {
  86   long bind = (long)(process);
  87   rb_process_setBind(ruby_process,bind);
  88 }
  89
  90
  91 // processCreate
  92
  93 void rb_process_create(VALUE class,VALUE ruby_process,VALUE host) {
  94   VALUE rbName;      // Name of Java Process instance
  95   m_process_t process; // Native Process to Create
  96   const char * name ; // Name of C Native Process
  97   char alias[MAX_ALIAS_NAME + 1 ] = {0};
  98   msg_mailbox_t mailbox;
  99   rbName = rb_process_getName(ruby_process);
 100
 101   if(!rbName) {
 102     rb_raise(rb_eRuntimeError,"Internal error : Process Name Cannot be NULL");
 103     return;
 104   }
 105   // Allocate the data for the simulation
 106   process = xbt_new0(s_m_process_t,1);
 107   process->simdata = xbt_new0(s_simdata_process_t,1);
 108   // Do we Really Need to Create Ruby Process Instance , >> process is already a Ruby Process !! So..Keep on ;)
 109   // Bind The Ruby Process instance to The Native Process
 110   rb_process_bind(ruby_process,process);
 111   name = RSTRING(rbName)->ptr;
 112   process->name = xbt_strdup(name);
 113   Data_Get_Struct(host,s_m_host_t,process->simdata->m_host);
 114
 115   if(!(process->simdata->m_host)) // Not Binded
 116   {
 117     free(process->simdata);
 118     free(process->data);
 119     free(process);
 120     rb_raise(rb_eRuntimeError,"Host not bound...while creating native process");
 121     return;
 122   }
 123   process->simdata->PID = msg_global->PID++; //  msg_global ??
 124
 125   DEBUG7("fill in process %s/%s (pid=%d) %p (sd=%p , host=%p, host->sd=%p)",
 126       process->name , process->simdata->m_host->name,process->simdata->PID,
 127       process,process->simdata, process->simdata->m_host,
 128       process->simdata->m_host->simdata);
 129
 130   /* FIXME: that's mainly for debugging. We could only allocate this if XBT_LOG_ISENABLED(ruby,debug) is true since I guess this leaks */
 131   char **argv=xbt_new(char*,2);
 132   argv[0] = bprintf("%s@%s",process->name,process->simdata->m_host->simdata->smx_host->name);
 133   argv[1] = NULL;
 134   process->simdata->s_process =
 135       SIMIX_process_create(process->name,
 136           (xbt_main_func_t)ruby_process,
 137           (void *) process,
 138           process->simdata->m_host->simdata->smx_host->name,
 139           1,argv,NULL);
 140
 141  DEBUG1("context created (s_process=%p)",process->simdata->s_process);
 142
 143   if (SIMIX_process_self()) { // SomeOne Created Me !!
 144     process->simdata->PPID = MSG_process_get_PID(SIMIX_process_self()->data);
 145   }
 146   else
 147   {
 148     process->simdata->PPID = -1;
 149   }
 150   process->simdata->last_errno = MSG_OK;
 151   // let's Add the Process to the list of the Simulation's Processes
 152   xbt_fifo_unshift(msg_global->process_list,process);
 153   sprintf(alias,"%s:%s",(process->simdata->m_host->simdata->smx_host)->name,
 154       process->name);
 155
 156   mailbox = MSG_mailbox_new(alias);
 157
 158 }
 159
 160
 161 // Process Management
 162 void rb_process_suspend(VALUE class,VALUE ruby_process) {
 163
 164   m_process_t process = rb_process_to_native(ruby_process);
 165
 166   if (!process) {
 167     rb_raise(rb_eRuntimeError,"Process Not Bound...while suspending process");
 168     return;
 169   }
 170
 171   // Trying to suspend The Process
 172
 173   if ( MSG_OK != MSG_process_suspend(process))
 174     rb_raise(rb_eRuntimeError,"MSG_process_suspend() failed");
 175 }
 176
 177 void rb_process_resume(VALUE class,VALUE ruby_process) {
 178   m_process_t process = rb_process_to_native(ruby_process);
 179   if (!process) {
 180     rb_raise(rb_eRuntimeError,"Process not Bound...while resuming process");
 181     return ;
 182   }
 183
 184   // Trying to resume the process
 185   if ( MSG_OK != MSG_process_resume(process))
 186     rb_raise(rb_eRuntimeError,"MSG_process_resume() failed");
 187 }
 188
 189 VALUE rb_process_isSuspended(VALUE class,VALUE ruby_process) {
 190   m_process_t process = rb_process_to_native(ruby_process);
 191   if (!process) {
 192     rb_raise (rb_eRuntimeError,"Process not Bound...while testing if suspended");
 193     return Qfalse;
 194   }
 195
 196   if(MSG_process_is_suspended(process))
 197     return Qtrue;
 198   return Qfalse;
 199 }
 200
 201 void rb_process_kill_down(VALUE class,VALUE ruby_process) {
 202   m_process_t process = rb_process_to_native(ruby_process);
 203
 204   if(!process) {
 205     rb_raise (rb_eRuntimeError,"Process Not Bound...while killing process");
 206     return;
 207   }
 208   // Delete The Global Reference / Ruby Process
 209   rb_process_kill_up(ruby_process);
 210   // Delete the Native Process
 211   MSG_process_kill(process);
 212 }
 213
 214 VALUE rb_process_getHost(VALUE class,VALUE ruby_process) {
 215   m_process_t process = rb_process_to_native(ruby_process);
 216   m_host_t host;
 217
 218   if (!process) {
 219     rb_raise(rb_eRuntimeError,"Process Not Bound...while getting Host");
 220     return Qnil; // NULL
 221   }
 222
 223   host = MSG_process_get_host(process);
 224
 225   if(!host->data) {
 226     rb_raise (rb_eRuntimeError,"MSG_process_get_host() failed");
 227     return Qnil;
 228   }
 229
 230   return Data_Wrap_Struct(class, 0, rb_host_free, host);
 231 }
 232
 233 void rb_process_exit(VALUE class,VALUE ruby_process) {
 234   m_process_t process = rb_process_to_native(ruby_process);
 235   if(!process) {
 236     rb_raise(rb_eRuntimeError,"Process Not Bound...while exiting process");
 237     return;
 238   }
 239   SIMIX_context_stop(SIMIX_process_self()->context);
 240 }