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 #include "gnunet_disk_lib.h"
  29
  30 #define VERBOSE GNUNET_NO
  31
  32 static void
  33 task2 (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
  34 {
  35   int *ok = cls;
  36   GNUNET_assert (2 == *ok);
  37   (*ok) = 3;
  38 }
  39
  40 static void
  41 task3 (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
  42 {
  43   int *ok = cls;
  44   /* t4 should be ready (albeit with lower priority) */
  45   GNUNET_assert (1 == GNUNET_SCHEDULER_get_load (tc->sched,
  46                                                  GNUNET_SCHEDULER_PRIORITY_COUNT));
  47   GNUNET_assert (3 == *ok);
  48   (*ok) = 4;
  49 }
  50
  51 static void
  52 task4 (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
  53 {
  54   int *ok = cls;
  55   GNUNET_assert (4 == *ok);
  56   (*ok) = 5;
  57 }
  58
  59 struct GNUNET_DISK_PipeHandle *p;
  60 static const struct GNUNET_DISK_FileHandle *fds[2];
  61
  62
  63 static void
  64 taskWrt (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
  65 {
  66   static char c;
  67   int *ok = cls;
  68   GNUNET_assert (6 == *ok);
  69   GNUNET_assert (GNUNET_NETWORK_fdset_handle_isset (tc->write_ready, fds[1]));
  70   (*ok) = 7;
  71   GNUNET_assert (1 == GNUNET_DISK_file_write (fds[1], &c, 1));
  72 }
  73
  74
  75 static void
  76 taskNeverRun (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
  77 {
  78   GNUNET_assert (0);
  79 }
  80
  81 static void
  82 taskLast (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
  83 {
  84   int *ok = cls;
  85   /* t4 should be ready (albeit with lower priority) */
  86   GNUNET_assert (8 == *ok);
  87   (*ok) = 0;
  88 }
  89
  90 static void
  91 taskRd (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
  92 {
  93   static char c;
  94   int *ok = cls;
  95   GNUNET_assert (7 == *ok);
  96   GNUNET_assert (GNUNET_NETWORK_fdset_handle_isset (tc->read_ready, fds[0]));
  97   GNUNET_assert (1 == GNUNET_DISK_file_read (fds[0], &c, 1));
  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   p = GNUNET_DISK_pipe (GNUNET_NO);
 118   GNUNET_assert (NULL != p);
 119   fds[0] = GNUNET_DISK_pipe_handle (p, 0);
 120   fds[1] = GNUNET_DISK_pipe_handle (p, 1);
 121   GNUNET_SCHEDULER_add_read_file (tc->sched,
 122                                   GNUNET_NO,
 123                                   GNUNET_SCHEDULER_PRIORITY_DEFAULT,
 124                                   GNUNET_SCHEDULER_NO_TASK,
 125                                   GNUNET_TIME_UNIT_FOREVER_REL,
 126                                   fds[0], &taskRd, cls);
 127   GNUNET_SCHEDULER_add_write_file (tc->sched,
 128                               GNUNET_NO,
 129                               GNUNET_SCHEDULER_PRIORITY_DEFAULT,
 130                               GNUNET_SCHEDULER_NO_TASK,
 131                               GNUNET_TIME_UNIT_FOREVER_REL,
 132                               fds[1], &taskWrt, cls);
 133 }
 134
 135
 136 static void
 137 task1 (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
 138 {
 139   int *ok = cls;
 140   GNUNET_SCHEDULER_TaskIdentifier t2;
 141   GNUNET_SCHEDULER_TaskIdentifier t4;
 142
 143   GNUNET_assert (1 == *ok);
 144   (*ok) = 2;
 145   /* t2 will go first -- prereq for all */
 146   t2 = GNUNET_SCHEDULER_add_after (tc->sched,
 147                                    GNUNET_NO,
 148                                    GNUNET_SCHEDULER_PRIORITY_IDLE,
 149                                    GNUNET_SCHEDULER_NO_TASK,
 150                                    &task2, cls);
 151   /* t3 will go before t4: higher priority */
 152   t4 = GNUNET_SCHEDULER_add_after (tc->sched,
 153                                    GNUNET_NO,
 154                                    GNUNET_SCHEDULER_PRIORITY_IDLE,
 155                                    t2, &task4, cls);
 156   GNUNET_SCHEDULER_add_delayed (tc->sched,
 157                                 GNUNET_NO,
 158                                 GNUNET_SCHEDULER_PRIORITY_DEFAULT,
 159                                 t2,
 160                                 GNUNET_TIME_relative_get_zero (),
 161                                 &task3, cls);
 162   /* t4 will go first: lower prio, but prereq! */
 163   GNUNET_SCHEDULER_add_after (tc->sched,
 164                               GNUNET_NO,
 165                               GNUNET_SCHEDULER_PRIORITY_UI, t4, &task5, cls);
 166 }
 167
 168
 169
 170 /**
 171  * Main method, starts scheduler with task1,
 172  * checks that "ok" is correct at the end.
 173  */
 174 static int
 175 check ()
 176 {
 177   int ok;
 178
 179   ok = 1;
 180   GNUNET_SCHEDULER_run (&task1, &ok);
 181   return ok;
 182 }
 183
 184
 185 static void
 186 taskSig (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
 187 {
 188   int *ok = cls;
 189   GNUNET_assert (1 == *ok);
 190   *ok = 8;
 191   GNUNET_SCHEDULER_add_after (tc->sched,
 192                               GNUNET_NO,
 193                               GNUNET_SCHEDULER_PRIORITY_UI,
 194                               0, &taskNeverRun, NULL);
 195   GNUNET_SCHEDULER_add_after (tc->sched,
 196                               GNUNET_YES,
 197                               GNUNET_SCHEDULER_PRIORITY_UI,
 198                               0, &taskLast, cls);
 199   GNUNET_break (0 == PLIBC_KILL (getpid (), SIGTERM));
 200 }
 201
 202
 203 /**
 204  * Main method, starts scheduler with task1,
 205  * checks that "ok" is correct at the end.
 206  */
 207 static int
 208 checkSignal ()
 209 {
 210   int ok;
 211
 212   ok = 1;
 213   GNUNET_SCHEDULER_run (&taskSig, &ok);
 214   return ok;
 215 }
 216
 217
 218
 219
 220 static void
 221 taskCancel (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
 222 {
 223   int *ok = cls;
 224
 225   GNUNET_assert (1 == *ok);
 226   *ok = 0;
 227   GNUNET_SCHEDULER_cancel (tc->sched,
 228                            GNUNET_SCHEDULER_add_after (tc->sched,
 229                                                        GNUNET_NO,
 230                                                        GNUNET_SCHEDULER_PRIORITY_UI,
 231                                                        0,
 232                                                        &taskNeverRun, NULL));
 233 }
 234
 235
 236 /**
 237  * Main method, starts scheduler with task1,
 238  * checks that "ok" is correct at the end.
 239  */
 240 static int
 241 checkCancel ()
 242 {
 243   int ok;
 244
 245   ok = 1;
 246   GNUNET_SCHEDULER_run (&taskCancel, &ok);
 247   return ok;
 248 }
 249
 250
 251
 252 int
 253 main (int argc, char *argv[])
 254 {
 255   int ret = 0;
 256
 257   GNUNET_log_setup ("test_scheduler", "WARNING", NULL);
 258   ret += check ();
 259   ret += checkSignal ();
 260   ret += checkCancel ();
 261   GNUNET_DISK_pipe_close (p);
 262
 263   return ret;
 264 }
 265
 266 /* end of test_scheduler.c */