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 // FIXME: don't mess with MSG internals here, use MSG_process_create_with_arguments()
  93
  94 void rb_process_create(VALUE class,VALUE ruby_process,VALUE host) {
  95   VALUE rbName;      // Name of ruby Process instance
  96   m_process_t process; // Native Process to Create
  97   const char * name ; // Name of C Native Process
  98   rbName = rb_process_getName(ruby_process);
  99
 100   if(!rbName)
 101     rb_raise(rb_eRuntimeError,"Internal error: Process name cannot be NULL");
 102
 103   // Allocate the data for the simulation
 104   process = xbt_new0(s_m_process_t,1);
 105   process->simdata = xbt_new0(s_simdata_process_t,1);
 106   // Do we Really Need to Create Ruby Process Instance , >> process is already a Ruby Process !! So..Keep on ;)
 107   // Bind The Ruby Process instance to The Native Process
 108   rb_process_bind(ruby_process,process);
 109   name = RSTRING(rbName)->ptr;
 110   process->name = xbt_strdup(name);
 111   Data_Get_Struct(host,s_m_host_t,process->simdata->m_host);
 112
 113   if(!(process->simdata->m_host)) { // Not Binded
 114     free(process->simdata);
 115     free(process->data);
 116     free(process);
 117     rb_raise(rb_eRuntimeError,"Host not bound while creating native process");
 118   }
 119   process->simdata->PID = msg_global->PID++; //  msg_global ??
 120
 121   DEBUG7("fill in process %s/%s (pid=%d) %p (sd=%p , host=%p, host->sd=%p)",
 122       process->name , process->simdata->m_host->name,process->simdata->PID,
 123       process,process->simdata, process->simdata->m_host,
 124       process->simdata->m_host->simdata);
 125
 126   /* FIXME: that's mainly for debugging. We could only allocate this if XBT_LOG_ISENABLED(ruby,debug) is true since I guess this leaks */
 127   char **argv=xbt_new(char*,2);
 128   argv[0] = bprintf("%s@%s",process->name,process->simdata->m_host->simdata->smx_host->name);
 129   argv[1] = NULL;
 130   process->simdata->s_process =
 131       SIMIX_process_create(process->name,
 132           (xbt_main_func_t)ruby_process,
 133           (void *) process,
 134           process->simdata->m_host->simdata->smx_host->name,
 135           1,argv,NULL);
 136
 137   DEBUG1("context created (s_process=%p)",process->simdata->s_process);
 138
 139   if (SIMIX_process_self()) { // SomeOne Created Me !!
 140     process->simdata->PPID = MSG_process_get_PID(SIMIX_process_self()->data);
 141   } else {
 142     process->simdata->PPID = -1;
 143   }
 144   process->simdata->last_errno = MSG_OK;
 145   // let's Add the Process to the list of the Simulation's Processes
 146   xbt_fifo_unshift(msg_global->process_list,process);
 147 }
 148
 149
 150 // Process Management
 151 void rb_process_suspend(VALUE class,VALUE ruby_process) {
 152
 153   m_process_t process = rb_process_to_native(ruby_process);
 154
 155   if (!process) {
 156     rb_raise(rb_eRuntimeError,"Process Not Bound...while suspending process");
 157     return;
 158   }
 159
 160   // Trying to suspend The Process
 161
 162   if ( MSG_OK != MSG_process_suspend(process))
 163     rb_raise(rb_eRuntimeError,"MSG_process_suspend() failed");
 164 }
 165
 166 void rb_process_resume(VALUE class,VALUE ruby_process) {
 167   m_process_t process = rb_process_to_native(ruby_process);
 168   if (!process) {
 169     rb_raise(rb_eRuntimeError,"Process not Bound...while resuming process");
 170     return ;
 171   }
 172
 173   // Trying to resume the process
 174   if ( MSG_OK != MSG_process_resume(process))
 175     rb_raise(rb_eRuntimeError,"MSG_process_resume() failed");
 176 }
 177
 178 VALUE rb_process_isSuspended(VALUE class,VALUE ruby_process) {
 179   m_process_t process = rb_process_to_native(ruby_process);
 180   if (!process) {
 181     rb_raise (rb_eRuntimeError,"Process not Bound...while testing if suspended");
 182     return Qfalse;
 183   }
 184
 185   if(MSG_process_is_suspended(process))
 186     return Qtrue;
 187   return Qfalse;
 188 }
 189
 190 void rb_process_kill_down(VALUE class,VALUE ruby_process) {
 191   m_process_t process = rb_process_to_native(ruby_process);
 192
 193   if(!process) {
 194     rb_raise (rb_eRuntimeError,"Process Not Bound...while killing process");
 195     return;
 196   }
 197   // Delete The Global Reference / Ruby Process
 198   rb_process_kill_up(ruby_process);
 199   // Delete the Native Process
 200   MSG_process_kill(process);
 201 }
 202
 203 VALUE rb_process_getHost(VALUE class,VALUE ruby_process) {
 204   m_process_t process = rb_process_to_native(ruby_process);
 205   m_host_t host;
 206
 207   if (!process) {
 208     rb_raise(rb_eRuntimeError,"Process Not Bound...while getting Host");
 209     return Qnil; // NULL
 210   }
 211
 212   host = MSG_process_get_host(process);
 213
 214   if(!host->data) {
 215     rb_raise (rb_eRuntimeError,"MSG_process_get_host() failed");
 216     return Qnil;
 217   }
 218
 219   return Data_Wrap_Struct(class, 0, rb_host_free, host);
 220 }
 221
 222 void rb_process_exit(VALUE class,VALUE ruby_process) {
 223   m_process_t process = rb_process_to_native(ruby_process);
 224   if(!process) {
 225     rb_raise(rb_eRuntimeError,"Process Not Bound...while exiting process");
 226     return;
 227   }
 228   SIMIX_context_stop(SIMIX_process_self()->context);
 229 }