src/util/test_scheduler.c

   1 /*
   2      This file is part of GNUnet.
   3      (C) 2009 Christian Grothoff (and other contributing authors)
   4
   5      GNUnet is free software; you can redistribute it and/or modify
   6      it under the terms of the GNU General Public License as published
   7      by the Free Software Foundation; either version 2, or (at your
   8      option) any later version.
   9
  10      GNUnet is distributed in the hope that it will be useful, but
  11      WITHOUT ANY WARRANTY; without even the implied warranty of
  12      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13      General Public License for more details.
  14
  15      You should have received a copy of the GNU General Public License
  16      along with GNUnet; see the file COPYING.  If not, write to the
  17      Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  18      Boston, MA 02111-1307, USA.
  19 */
  20 /**
  21  * @file util/test_scheduler.c
  22  * @brief tests for the scheduler
  23  */
  24 #include "platform.h"
  25 #include "gnunet_common.h"
  26 #include "gnunet_scheduler_lib.h"
  27 #include "gnunet_time_lib.h"
  28
  29 #define VERBOSE GNUNET_NO
  30
  31 static void
  32 task2 (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
  33 {
  34   int *ok = cls;
  35   GNUNET_assert (2 == *ok);
  36   (*ok) = 3;
  37 }
  38
  39 static void
  40 task3 (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
  41 {
  42   int *ok = cls;
  43   /* t4 should be ready (albeit with lower priority) */
  44   GNUNET_assert (1 == GNUNET_SCHEDULER_get_load (tc->sched,
  45                                                  GNUNET_SCHEDULER_PRIORITY_COUNT));
  46   GNUNET_assert (3 == *ok);
  47   (*ok) = 4;
  48 }
  49
  50 static void
  51 task4 (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
  52 {
  53   int *ok = cls;
  54   GNUNET_assert (4 == *ok);
  55   (*ok) = 5;
  56 }
  57
  58 static int fds[2];
  59
  60
  61 static void
  62 taskWrt (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
  63 {
  64   static char c;
  65   int *ok = cls;
  66   GNUNET_assert (6 == *ok);
  67   GNUNET_assert (FD_ISSET (fds[1], tc->write_ready));
  68   (*ok) = 7;
  69   GNUNET_assert (1 == WRITE (fds[1], &c, 1));
  70   GNUNET_break (0 == CLOSE (fds[1]));
  71 }
  72
  73
  74 static void
  75 taskNeverRun (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
  76 {
  77   GNUNET_assert (0);
  78 }
  79
  80 static void
  81 taskLast (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
  82 {
  83   int *ok = cls;
  84   /* t4 should be ready (albeit with lower priority) */
  85   GNUNET_assert (8 == *ok);
  86   (*ok) = 0;
  87 }
  88
  89 static void
  90 taskRd (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
  91 {
  92   static char c;
  93   int *ok = cls;
  94   GNUNET_assert (7 == *ok);
  95   GNUNET_assert (FD_ISSET (fds[0], tc->read_ready));
  96   GNUNET_assert (1 == READ (fds[0], &c, 1));
  97   GNUNET_break (0 == CLOSE (fds[0]));
  98   (*ok) = 8;
  99   GNUNET_SCHEDULER_add_after (tc->sched,
 100                               GNUNET_NO,
 101                               GNUNET_SCHEDULER_PRIORITY_UI,
 102                               0, &taskNeverRun, NULL);
 103   GNUNET_SCHEDULER_add_after (tc->sched,
 104                               GNUNET_YES,
 105                               GNUNET_SCHEDULER_PRIORITY_IDLE,
 106                               0, &taskLast, cls);
 107   GNUNET_SCHEDULER_shutdown (tc->sched);
 108 }
 109
 110
 111 static void
 112 task5 (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
 113 {
 114   int *ok = cls;
 115   GNUNET_assert (5 == *ok);
 116   (*ok) = 6;
 117   GNUNET_assert (0 == pipe (fds));
 118   GNUNET_SCHEDULER_add_read (tc->sched,
 119                              GNUNET_NO,
 120                              GNUNET_SCHEDULER_PRIORITY_DEFAULT,
 121                              GNUNET_SCHEDULER_NO_PREREQUISITE_TASK,
 122                              GNUNET_TIME_UNIT_FOREVER_REL,
 123                              fds[0], &taskRd, cls);
 124   GNUNET_SCHEDULER_add_write (tc->sched,
 125                               GNUNET_NO,
 126                               GNUNET_SCHEDULER_PRIORITY_DEFAULT,
 127                               GNUNET_SCHEDULER_NO_PREREQUISITE_TASK,
 128                               GNUNET_TIME_UNIT_FOREVER_REL,
 129                               fds[1], &taskWrt, cls);
 130 }
 131
 132
 133 static void
 134 task1 (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
 135 {
 136   int *ok = cls;
 137   GNUNET_SCHEDULER_TaskIdentifier t2;
 138   GNUNET_SCHEDULER_TaskIdentifier t3;
 139   GNUNET_SCHEDULER_TaskIdentifier t4;
 140
 141   GNUNET_assert (1 == *ok);
 142   (*ok) = 2;
 143   /* t2 will go first -- prereq for all */
 144   t2 = GNUNET_SCHEDULER_add_after (tc->sched,
 145                                    GNUNET_NO,
 146                                    GNUNET_SCHEDULER_PRIORITY_IDLE,
 147                                    GNUNET_SCHEDULER_NO_PREREQUISITE_TASK,
 148                                    &task2, cls);
 149   /* t3 will go before t4: higher priority */
 150   t4 = GNUNET_SCHEDULER_add_after (tc->sched,
 151                                    GNUNET_NO,
 152                                    GNUNET_SCHEDULER_PRIORITY_IDLE,
 153                                    t2, &task4, cls);
 154   t3 = GNUNET_SCHEDULER_add_delayed (tc->sched,
 155                                      GNUNET_NO,
 156                                      GNUNET_SCHEDULER_PRIORITY_DEFAULT,
 157                                      t2,
 158                                      GNUNET_TIME_relative_get_zero (),
 159                                      &task3, cls);
 160   /* t4 will go first: lower prio, but prereq! */
 161   GNUNET_SCHEDULER_add_after (tc->sched,
 162                               GNUNET_NO,
 163                               GNUNET_SCHEDULER_PRIORITY_UI, t4, &task5, cls);
 164 }
 165
 166
 167
 168 /**
 169  * Main method, starts scheduler with task1,
 170  * checks that "ok" is correct at the end.
 171  */
 172 static int
 173 check ()
 174 {
 175   int ok;
 176
 177   ok = 1;
 178   GNUNET_SCHEDULER_run (&task1, &ok);
 179   return ok;
 180 }
 181
 182
 183 static void
 184 taskSig (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
 185 {
 186   int *ok = cls;
 187   GNUNET_assert (1 == *ok);
 188   *ok = 8;
 189   GNUNET_SCHEDULER_add_after (tc->sched,
 190                               GNUNET_NO,
 191                               GNUNET_SCHEDULER_PRIORITY_UI,
 192                               0, &taskNeverRun, NULL);
 193   GNUNET_SCHEDULER_add_after (tc->sched,
 194                               GNUNET_YES,
 195                               GNUNET_SCHEDULER_PRIORITY_UI,
 196                               0, &taskLast, cls);
 197   GNUNET_break (0 == PLIBC_KILL (getpid (), SIGTERM));
 198 }
 199
 200
 201 /**
 202  * Main method, starts scheduler with task1,
 203  * checks that "ok" is correct at the end.
 204  */
 205 static int
 206 checkSignal ()
 207 {
 208   int ok;
 209
 210   ok = 1;
 211   GNUNET_SCHEDULER_run (&taskSig, &ok);
 212   return ok;
 213 }
 214
 215
 216
 217
 218 static void
 219 taskCancel (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
 220 {
 221   int *ok = cls;
 222
 223   GNUNET_assert (1 == *ok);
 224   *ok = 0;
 225   GNUNET_SCHEDULER_cancel (tc->sched,
 226                            GNUNET_SCHEDULER_add_after (tc->sched,
 227                                                        GNUNET_NO,
 228                                                        GNUNET_SCHEDULER_PRIORITY_UI,
 229                                                        0,
 230                                                        &taskNeverRun, NULL));
 231 }
 232
 233
 234 /**
 235  * Main method, starts scheduler with task1,
 236  * checks that "ok" is correct at the end.
 237  */
 238 static int
 239 checkCancel ()
 240 {
 241   int ok;
 242
 243   ok = 1;
 244   GNUNET_SCHEDULER_run (&taskCancel, &ok);
 245   return ok;
 246 }
 247
 248
 249
 250 int
 251 main (int argc, char *argv[])
 252 {
 253   int ret = 0;
 254
 255   GNUNET_log_setup ("test_scheduler", "WARNING", NULL);
 256   ret += check ();
 257   ret += checkSignal ();
 258   ret += checkCancel ();
 259
 260   return ret;
 261 }
 262
 263 /* end of test_scheduler.c */