src/gras/Virtu/sg_process.c

   1 /* $Id$ */
   2
   3 /* process_sg - GRAS process handling on simulator                          */
   4
   5 /* Copyright (c) 2003, 2004 Martin Quinson. All rights reserved.            */
   6
   7 /* This program is free software; you can redistribute it and/or modify it
   8  * under the terms of the license (GNU LGPL) which comes with this package. */
   9
  10 #include "xbt/ex.h"
  11 #include "gras_modinter.h" /* module initialization interface */
  12 #include "gras/Virtu/virtu_sg.h"
  13 #include "gras/Msg/msg_interface.h" /* For some checks at simulation end */
  14 #include "gras/Transport/transport_interface.h" /* For some checks at simulation end */
  15
  16 XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(gras_virtu_process);
  17
  18 static long int PID = 1;
  19
  20 void
  21 gras_process_init() {
  22   gras_hostdata_t *hd=(gras_hostdata_t *)SIMIX_host_get_data(SIMIX_host_self());
  23   gras_procdata_t *pd=xbt_new0(gras_procdata_t,1);
  24   gras_trp_procdata_t trp_pd;
  25
  26   SIMIX_process_set_data(SIMIX_process_self(),(void*)pd);
  27
  28
  29   gras_procdata_init();
  30
  31   if (!hd) {
  32     /* First process on this host */
  33     hd=xbt_new(gras_hostdata_t,1);
  34     hd->refcount = 1;
  35     hd->ports = xbt_dynar_new(sizeof(gras_sg_portrec_t),NULL);
  36                 SIMIX_host_set_data(SIMIX_host_self(),(void*)hd);
  37   } else {
  38     hd->refcount++;
  39   }
  40
  41         trp_pd = (gras_trp_procdata_t)gras_libdata_by_name("gras_trp");
  42         pd->pid = PID++;
  43
  44         if (SIMIX_process_self() != NULL ) {
  45                 pd->ppid = gras_os_getpid();
  46         }
  47         else pd->ppid = -1;
  48
  49         trp_pd->mutex = SIMIX_mutex_init();
  50         trp_pd->cond = SIMIX_cond_init();
  51         trp_pd->active_socket = xbt_fifo_new();
  52
  53   VERB2("Creating process '%s' (%ld)",
  54            SIMIX_process_get_name(SIMIX_process_self()),
  55            gras_os_getpid());
  56 }
  57
  58 void
  59 gras_process_exit() {
  60         xbt_dynar_t sockets = ((gras_trp_procdata_t) gras_libdata_by_name("gras_trp"))->sockets;
  61   gras_socket_t sock_iter;
  62   int cursor;
  63   gras_hostdata_t *hd=(gras_hostdata_t *)SIMIX_host_get_data(SIMIX_host_self());
  64   gras_procdata_t *pd=(gras_procdata_t*)SIMIX_process_get_data(SIMIX_process_self());
  65
  66   gras_msg_procdata_t msg_pd=(gras_msg_procdata_t)gras_libdata_by_name("gras_msg");
  67   gras_trp_procdata_t trp_pd=(gras_trp_procdata_t)gras_libdata_by_name("gras_trp");
  68
  69         SIMIX_mutex_destroy(trp_pd->mutex);
  70         SIMIX_cond_destroy(trp_pd->cond);
  71         xbt_fifo_free(trp_pd->active_socket);
  72   //int myPID=gras_os_getpid();
  73   //int cpt;
  74   //gras_sg_portrec_t pr;
  75
  76   xbt_assert0(hd,"Run gras_process_init (ie, gras_init)!!");
  77
  78   VERB2("GRAS: Finalizing process '%s' (%ld)",
  79         SIMIX_process_get_name(SIMIX_process_self()),gras_os_getpid());
  80
  81   if (xbt_dynar_length(msg_pd->msg_queue))
  82     WARN1("process %ld terminated, but some messages are still queued",
  83           gras_os_getpid());
  84
  85         /* if each process has its sockets list, we need to close them when the process finish */
  86         xbt_dynar_foreach(sockets,cursor,sock_iter) {
  87                 VERB1("Closing the socket %p left open on exit. Maybe a socket leak?",
  88                                 sock_iter);
  89                 gras_socket_close(sock_iter);
  90         }
  91   if ( ! --(hd->refcount)) {
  92     xbt_dynar_free(&hd->ports);
  93     free(hd);
  94   }
  95   gras_procdata_exit();
  96   free(pd);
  97 }
  98
  99 /* **************************************************************************
 100  * Process data
 101  * **************************************************************************/
 102
 103 gras_procdata_t *gras_procdata_get(void) {
 104   gras_procdata_t *pd=
 105     (gras_procdata_t *)SIMIX_process_get_data(SIMIX_process_self());
 106
 107   xbt_assert0(pd,"Run gras_process_init! (ie, gras_init)");
 108
 109   return pd;
 110 }
 111 void *
 112 gras_libdata_by_name_from_remote(const char *name, smx_process_t p) {
 113   gras_procdata_t *pd=
 114     (gras_procdata_t *)SIMIX_process_get_data(p);
 115
 116   xbt_assert2(pd,"process '%s' on '%s' didn't run gras_process_init! (ie, gras_init)",
 117               SIMIX_process_get_name(p),SIMIX_host_get_name(SIMIX_process_get_host(p)));
 118
 119   return gras_libdata_by_name_from_procdata(name, pd);
 120 }
 121
 122 const char* xbt_procname(void) {
 123   const char *res = NULL;
 124   smx_process_t process = SIMIX_process_self();
 125   if ((process != NULL) && (process->simdata))
 126     res = SIMIX_process_get_name(process);
 127   if (res)
 128     return res;
 129   else
 130     return "";
 131 }
 132
 133 long int gras_os_getpid(void) {
 134
 135   smx_process_t process = SIMIX_process_self();
 136
 137   if ((process != NULL) && (process->data))
 138                 return ((gras_procdata_t*)process->data)->pid;
 139   else
 140     return 0;
 141 }