frsh_api/frsh_core.c

   1 /**************************************************************************/
   2 /* ---------------------------------------------------------------------- */
   3 /* Copyright (C) 2006 - 2008 FRESCOR consortium partners:                 */
   4 /*                                                                        */
   5 /*   Universidad de Cantabria,              SPAIN                         */
   6 /*   University of York,                    UK                            */
   7 /*   Scuola Superiore Sant'Anna,            ITALY                         */
   8 /*   Kaiserslautern University,             GERMANY                       */
   9 /*   Univ. Politécnica  Valencia,           SPAIN                        */
  10 /*   Czech Technical University in Prague,  CZECH REPUBLIC                */
  11 /*   ENEA                                   SWEDEN                        */
  12 /*   Thales Communication S.A.              FRANCE                        */
  13 /*   Visual Tools S.A.                      SPAIN                         */
  14 /*   Rapita Systems Ltd                     UK                            */
  15 /*   Evidence                               ITALY                         */
  16 /*                                                                        */
  17 /*   See http://www.frescor.org for a link to partners' websites          */
  18 /*                                                                        */
  19 /*          FRESCOR project (FP6/2005/IST/5-034026) is funded             */
  20 /*       in part by the European Union Sixth Framework Programme          */
  21 /*       The European Union is not liable of any use that may be          */
  22 /*       made of this code.                                               */
  23 /*                                                                        */
  24 /*                                                                        */
  25 /*  This file is part of FRSH (FRescor ScHeduler)                         */
  26 /*                                                                        */
  27 /* FRSH is free software; you can redistribute it and/or modify it        */
  28 /* under terms of the GNU General Public License as published by the      */
  29 /* Free Software Foundation; either version 2, or (at your option) any    */
  30 /* later version.  FRSH is distributed in the hope that it will be        */
  31 /* useful, but WITHOUT ANY WARRANTY; without even the implied warranty    */
  32 /* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU    */
  33 /* General Public License for more details. You should have received a    */
  34 /* copy of the GNU General Public License along with FRSH; see file       */
  35 /* COPYING. If not, write to the Free Software Foundation, 675 Mass Ave,  */
  36 /* Cambridge, MA 02139, USA.                                              */
  37 /*                                                                        */
  38 /* As a special exception, including FRSH header files in a file,         */
  39 /* instantiating FRSH generics or templates, or linking other files       */
  40 /* with FRSH objects to produce an executable application, does not       */
  41 /* by itself cause the resulting executable application to be covered     */
  42 /* by the GNU General Public License. This exception does not             */
  43 /* however invalidate any other reasons why the executable file might be  */
  44 /* covered by the GNU Public License.                                     */
  45 /**************************************************************************/
  46
  47 /**
  48  * @file   frsh_core.c
  49  * @author Michal Sojka <sojkam1@fel.cvut.cz>
  50  *         Dario Faggioli <faggioli@gandalf.sssup.it>
  51  * @date   Wed Feb 18 16:04:22 2009
  52  *
  53  * @brief  Core of FRSH_FORB framework
  54  *
  55  */
  56
  57
  58 #include <frsh_core.h>
  59 #include <fcb.h>
  60 #include <forb.h>
  61 #include <fra_generic.h>
  62 #include "frsh_forb.h"
  63 #include <frsh_resources.h>
  64
  65 #if FRSH_DISTRIBUTED_MODULE_SUPPORTED
  66 #include <frsh_distributed.h>
  67 #endif
  68
  69 #ifdef CONFIG_AQUOSA
  70 #include <aqcpu_res.h>
  71 #endif
  72
  73 #ifdef CONFIG_CPUCG
  74 #include <cpucg_res.h>
  75 #endif
  76
  77 #ifdef CONFIG_DISKBFQ
  78 #include <diskbfq_res.h>
  79 #endif
  80
  81 #ifdef CONFIG_RESOURCE_DUMMY
  82 #include <res_dummy.h>
  83 #endif
  84
  85 #ifdef CONFIG_RESOURCE_ITEM
  86 #include <item.h>
  87 #endif
  88
  89 struct frsh_forb frsh_forb_global;
  90
  91 static void *alloc_executor_thread(void *arg)
  92 {
  93         return (void*)(uintptr_t)forb_executor_run(&frsh_forb_global.alloc_executor);
  94 }
  95
  96
  97 int frsh_init()
  98 {
  99         int ret;
 100         struct forb_init_attr attr = {
 101                 .orb_id = "org.frescor.frsh_app"
 102         };
 103
 104         frsh_forb_global.orb = forb_init(NULL, NULL, &attr);
 105         if (!frsh_forb_global.orb) {
 106                 ret = errno;
 107                 goto err;
 108         }
 109
 110         frsh_forb_global.fcb = forb_resolve_reference(frsh_forb_global.orb,
 111                                             fres_contract_broker_reg_name);
 112         if (!frsh_forb_global.fcb) {
 113                 ret = FRES_ERR_FCB_NOT_RUNNING;
 114                 goto err;
 115         }
 116
 117         /* Initialize resource allocators */
 118         ret = forb_executor_init(&frsh_forb_global.alloc_executor);
 119         if (ret) goto err;
 120
 121         ret = fra_registry_init(frsh_forb_global.orb, frsh_forb_global.fcb,
 122                                 &frsh_forb_global.alloc_executor);
 123         if (ret) goto err;
 124
 125 #ifdef CONFIG_AQUOSA
 126         ret = aqcpu_fra_init();
 127         if (ret) goto err;
 128 #endif
 129 #ifdef CONFIG_CPUCG
 130         ret = cpucg_fra_init();
 131         if (ret) goto err;
 132 #endif
 133 #ifdef CONFIG_RESOURCE_DUMMY
 134         ret = fra_dummy_init();
 135         if (ret) goto err;
 136 #endif
 137
 138 #ifdef CONFIG_DISKBFQ
 139         ret = diskbfq_fra_init();
 140         if (ret) goto err;
 141 #endif
 142
 143 #if FRSH_DISTRIBUTED_MODULE_SUPPORTED
 144         ret = frsh_distributed_init();
 145         if (ret) goto err;
 146 #endif
 147
 148 #ifdef CONFIG_RESOURCE_ITEM
 149         ret = fra_item_init();
 150         if (ret) goto err;
 151 #endif
 152         /* Run resource allocators */
 153         fosa_thread_create(&frsh_forb_global.alloc_executor_thread, NULL,
 154                            alloc_executor_thread, NULL);
 155
 156         return 0;
 157 err:
 158         if (ret == -1) ret = errno;
 159         return ret;
 160 }
 161
 162 void frsh_destroy()
 163 {
 164         pthread_cancel(frsh_forb_global.alloc_executor_thread.pthread_id);
 165         pthread_join(frsh_forb_global.alloc_executor_thread.pthread_id, NULL);
 166
 167         forb_destroy(frsh_forb_global.orb);
 168         /* TODO: Destroy all FRAs etc. */
 169 }
 170
 171
 172
 173 bool frsh_config_is_admission_test_enabled()
 174 {
 175         return true;
 176 }
 177
 178 frsh_resource_id_t frsh_get_local_cpu_id(void)
 179 {
 180         frsh_resource_id_t id;
 181         long int ret =  FRSH_CPU_ID_DEFAULT;
 182         if (getenv("FRSH_CPU_ID")) {
 183                 errno = 0;      /* See strtol(1) */
 184                 ret = strtol(getenv("FRSH_CPU_ID"), NULL, 10);
 185                 if (errno != 0)
 186                         ret = FRSH_CPU_ID_DEFAULT;
 187         }
 188         return ret;
 189 }