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 // Init Ruby
  15 void initRuby(void) {
  16   ruby_init();
  17   ruby_init_loadpath();
  18   rb_require("RubyProcess.rb");
  19 }
  20
  21
  22 /*
  23  * Functions for Ruby Process Management (Up Calls)
  24  */
  25
  26
  27 // get Ruby Process Name
  28 VALUE rb_process_getName(VALUE ruby_process) {
  29   initRuby();
  30   // instance = rb_funcall3(rb_const_get(rb_cObject, rb_intern("RbProcess")),  rb_intern("new"), 0, 0);
  31   return rb_funcall(ruby_process,rb_intern("getName"),0);
  32
  33 }
  34
  35 // Get  Process ID
  36 VALUE rb_process_getID(VALUE ruby_process) {
  37   initRuby();
  38   return rb_funcall(ruby_process,rb_intern("getID"),0);
  39 }
  40
  41 // Get Bind
  42 VALUE rb_process_getBind(VALUE ruby_process) {
  43   initRuby();
  44   return rb_funcall(ruby_process,rb_intern("getBind"),0);
  45 }
  46
  47
  48 // Set Bind
  49 void rb_process_setBind(VALUE ruby_process,long bind) {
  50   initRuby();
  51   VALUE r_bind = LONG2FIX(bind);
  52   rb_funcall(ruby_process,rb_intern("setBind"),1,r_bind);
  53 }
  54
  55 // isAlive
  56 VALUE rb_process_isAlive(VALUE ruby_process) {
  57   initRuby();
  58   return rb_funcall(ruby_process,rb_intern("alive?"),0);
  59 }
  60
  61 // Kill Process
  62 void rb_process_kill_up(VALUE ruby_process) {
  63   initRuby();
  64   rb_funcall(ruby_process,rb_intern("kill"),0);
  65 }
  66
  67 // join Process
  68 void rb_process_join( VALUE ruby_process ) {
  69   initRuby();
  70   rb_funcall(ruby_process,rb_intern("join"),0);
  71 }
  72
  73 // unschedule Process
  74 void rb_process_unschedule( VALUE ruby_process ) {
  75   initRuby();
  76   rb_funcall(ruby_process,rb_intern("unschedule"),0);
  77 }
  78
  79 // schedule Process
  80 void rb_process_schedule( VALUE ruby_process ) {
  81   initRuby();
  82   rb_funcall(ruby_process,rb_intern("schedule"),0);
  83 }
  84
  85 /***************************************************
  86
  87 Function for Native Process ( Bound ) Management
  88
  89 Methods Belong to MSG Module
  90
  91  ****************************************************/
  92
  93 // Process To Native
  94 m_process_t rb_process_to_native(VALUE ruby_process) {
  95   VALUE id = rb_process_getBind(ruby_process);
  96   if (!id) {
  97     rb_raise(rb_eRuntimeError,"Process Not Bound >>> id_Bind Null");
  98     return NULL;
  99   }
 100   long l_id= FIX2LONG(id);
 101   return (m_process_t)l_id;
 102 }
 103
 104 // Bind Process
 105 void rb_process_bind(VALUE ruby_process,m_process_t process) {
 106   long bind = (long)(process);
 107   rb_process_setBind(ruby_process,bind);
 108 }
 109
 110
 111 // processCreate
 112
 113 void rb_process_create(VALUE class,VALUE ruby_process,VALUE host) {
 114   VALUE rbName;      // Name of Java Process instance
 115   m_process_t process; // Native Process to Create
 116   const char * name ; // Name of C Native Process
 117   char alias[MAX_ALIAS_NAME + 1 ] = {0};
 118   msg_mailbox_t mailbox;
 119   rbName = rb_process_getName(ruby_process);
 120
 121   if(!rbName) {
 122     rb_raise(rb_eRuntimeError,"Internal error : Process Name Cannot be NULL");
 123     return;
 124   }
 125   // Allocate the data for the simulation
 126   process = xbt_new0(s_m_process_t,1);
 127   process->simdata = xbt_new0(s_simdata_process_t,1);
 128   // Do we Really Need to Create Ruby Process Instance , >> process is already a Ruby Process !! So..Keep on ;)
 129   // Bind The Ruby Process instance to The Native Process
 130   rb_process_bind(ruby_process,process);
 131   name = RSTRING(rbName)->ptr;
 132   process->name = xbt_strdup(name);
 133   Data_Get_Struct(host,m_host_t,process->simdata->m_host);
 134
 135   if(!(process->simdata->m_host)) // Not Binded
 136   {
 137     free(process->simdata);
 138     free(process->data);
 139     free(process);
 140     rb_raise(rb_eRuntimeError,"Host not bound...while creating native process");
 141     return;
 142   }
 143   process->simdata->PID = msg_global->PID++; //  msg_global ??
 144
 145   DEBUG7("fill in process %s/%s (pid=%d) %p (sd=%p , host=%p, host->sd=%p)\n",
 146       process->name , process->simdata->m_host->name,process->simdata->PID,
 147       process,process->simdata, process->simdata->m_host,
 148       process->simdata->m_host->simdata);
 149
 150   process->simdata->s_process =
 151       SIMIX_process_create(process->name,
 152           (xbt_main_func_t)ruby_process,
 153           (void *) process,
 154           process->simdata->m_host->simdata->smx_host->name,
 155           0,NULL,NULL);
 156
 157  DEBUG1("context created (s_process=%p)\n",process->simdata->s_process);
 158
 159   if (SIMIX_process_self()) { // SomeOne Created Me !!
 160     process->simdata->PPID = MSG_process_get_PID(SIMIX_process_self()->data);
 161   }
 162   else
 163   {
 164     process->simdata->PPID = -1;
 165   }
 166   process->simdata->last_errno = MSG_OK;
 167   // let's Add the Process to the list of the Simulation's Processes
 168   xbt_fifo_unshift(msg_global->process_list,process);
 169   sprintf(alias,"%s:%s",(process->simdata->m_host->simdata->smx_host)->name,
 170       process->name);
 171
 172   mailbox = MSG_mailbox_new(alias);
 173
 174 }
 175
 176
 177 // Process Management
 178 void rb_process_suspend(VALUE class,VALUE ruby_process) {
 179
 180   m_process_t process = rb_process_to_native(ruby_process);
 181
 182   if (!process) {
 183     rb_raise(rb_eRuntimeError,"Process Not Bound...while suspending process");
 184     return;
 185   }
 186
 187   // Trying to suspend The Process
 188
 189   if ( MSG_OK != MSG_process_suspend(process))
 190     rb_raise(rb_eRuntimeError,"MSG_process_suspend() failed");
 191 }
 192
 193 void rb_process_resume(VALUE class,VALUE ruby_process) {
 194   m_process_t process = rb_process_to_native(ruby_process);
 195   if (!process) {
 196     rb_raise(rb_eRuntimeError,"Process not Bound...while resuming process");
 197     return ;
 198   }
 199
 200   // Trying to resume the process
 201   if ( MSG_OK != MSG_process_resume(process))
 202     rb_raise(rb_eRuntimeError,"MSG_process_resume() failed");
 203 }
 204
 205 VALUE rb_process_isSuspended(VALUE class,VALUE ruby_process) {
 206   m_process_t process = rb_process_to_native(ruby_process);
 207   if (!process) {
 208     rb_raise (rb_eRuntimeError,"Process not Bound...while testing if suspended");
 209     return Qfalse;
 210   }
 211
 212   if(MSG_process_is_suspended(process))
 213     return Qtrue;
 214   return Qfalse;
 215 }
 216
 217 void rb_process_kill_down(VALUE class,VALUE ruby_process) {
 218   m_process_t process = rb_process_to_native(ruby_process);
 219
 220   if(!process) {
 221     rb_raise (rb_eRuntimeError,"Process Not Bound...while killing process");
 222     return;
 223   }
 224   // Delete The Global Reference / Ruby Process
 225   rb_process_kill_up(ruby_process);
 226   // Delete the Native Process
 227   MSG_process_kill(process);
 228 }
 229
 230 VALUE rb_process_getHost(VALUE class,VALUE ruby_process) {
 231   m_process_t process = rb_process_to_native(ruby_process);
 232   m_host_t host;
 233
 234   if (!process) {
 235     rb_raise(rb_eRuntimeError,"Process Not Bound...while getting Host");
 236     return Qnil; // NULL
 237   }
 238
 239   host = MSG_process_get_host(process);
 240
 241   if(!host->data) {
 242     rb_raise (rb_eRuntimeError,"MSG_process_get_host() failed");
 243     return Qnil;
 244   }
 245
 246   return Data_Wrap_Struct(class, 0, rb_host_free, host);
 247 }
 248
 249 void rb_process_exit(VALUE class,VALUE ruby_process) {
 250   m_process_t process = rb_process_to_native(ruby_process);
 251   if(!process) {
 252     rb_raise(rb_eRuntimeError,"Process Not Bound...while exiting process");
 253     return;
 254   }
 255   SIMIX_context_stop(SIMIX_process_self()->context);
 256 }