ceph/src/dpdk/app/test/test_alarm.c

   1 /*-
   2  *   BSD LICENSE
   3  *
   4  *   Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
   5  *   All rights reserved.
   6  *
   7  *   Redistribution and use in source and binary forms, with or without
   8  *   modification, are permitted provided that the following conditions
   9  *   are met:
  10  *
  11  *     * Redistributions of source code must retain the above copyright
  12  *       notice, this list of conditions and the following disclaimer.
  13  *     * Redistributions in binary form must reproduce the above copyright
  14  *       notice, this list of conditions and the following disclaimer in
  15  *       the documentation and/or other materials provided with the
  16  *       distribution.
  17  *     * Neither the name of Intel Corporation nor the names of its
  18  *       contributors may be used to endorse or promote products derived
  19  *       from this software without specific prior written permission.
  20  *
  21  *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  22  *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  23  *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  24  *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  25  *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  26  *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  27  *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  28  *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  29  *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  30  *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  31  *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  32  */
  33
  34 #include <stdio.h>
  35 #include <stdint.h>
  36
  37 #include <rte_common.h>
  38 #include <rte_cycles.h>
  39 #include <rte_interrupts.h>
  40 #include <rte_common.h>
  41 #include <rte_atomic.h>
  42 #include <rte_alarm.h>
  43
  44 #include "test.h"
  45
  46 #define US_PER_MS 1000
  47
  48 #define RTE_TEST_ALARM_TIMEOUT 10 /* ms */
  49 #define RTE_TEST_CHECK_PERIOD   3 /* ms */
  50
  51 static volatile int flag;
  52
  53 static void
  54 test_alarm_callback(void *cb_arg)
  55 {
  56         flag = 1;
  57         printf("Callback setting flag - OK. [cb_arg = %p]\n", cb_arg);
  58 }
  59
  60 static rte_atomic32_t cb_count;
  61
  62 static void
  63 test_multi_cb(void *arg)
  64 {
  65         rte_atomic32_inc(&cb_count);
  66         printf("In %s - arg = %p\n", __func__, arg);
  67 }
  68
  69 static volatile int recursive_error = 0;
  70
  71 static void
  72 test_remove_in_callback(void *arg)
  73 {
  74         printf("In %s - arg = %p\n", __func__, arg);
  75         if (rte_eal_alarm_cancel(test_remove_in_callback, arg) ||
  76                         rte_eal_alarm_cancel(test_remove_in_callback, (void *)-1)) {
  77                 printf("Error - cancelling callback from within function succeeded!\n");
  78                 recursive_error = 1;
  79         }
  80         flag = (int)((uintptr_t)arg);
  81 }
  82
  83 static volatile int flag_2;
  84
  85 static void
  86 test_remove_in_callback_2(void *arg)
  87 {
  88         if (rte_eal_alarm_cancel(test_remove_in_callback_2, arg) || rte_eal_alarm_cancel(test_remove_in_callback_2, (void *)-1)) {
  89                 printf("Error - cancelling callback of test_remove_in_callback_2\n");
  90                 return;
  91         }
  92         flag_2 = 1;
  93 }
  94
  95 static int
  96 test_multi_alarms(void)
  97 {
  98         int rm_count = 0;
  99         cb_count.cnt = 0;
 100
 101         printf("Expect 6 callbacks in order...\n");
 102         /* add two alarms in order */
 103         rte_eal_alarm_set(10 * US_PER_MS, test_multi_cb, (void *)1);
 104         rte_eal_alarm_set(20 * US_PER_MS, test_multi_cb, (void *)2);
 105
 106         /* now add in reverse order */
 107         rte_eal_alarm_set(60 * US_PER_MS, test_multi_cb, (void *)6);
 108         rte_eal_alarm_set(50 * US_PER_MS, test_multi_cb, (void *)5);
 109         rte_eal_alarm_set(40 * US_PER_MS, test_multi_cb, (void *)4);
 110         rte_eal_alarm_set(30 * US_PER_MS, test_multi_cb, (void *)3);
 111
 112         /* wait for expiry */
 113         rte_delay_ms(65);
 114         if (cb_count.cnt != 6) {
 115                 printf("Missing callbacks\n");
 116                 /* remove any callbacks that might remain */
 117                 rte_eal_alarm_cancel(test_multi_cb, (void *)-1);
 118                 return -1;
 119         }
 120
 121         cb_count.cnt = 0;
 122         printf("Expect only callbacks with args 1 and 3...\n");
 123         /* Add 3 flags, then delete one */
 124         rte_eal_alarm_set(30 * US_PER_MS, test_multi_cb, (void *)3);
 125         rte_eal_alarm_set(20 * US_PER_MS, test_multi_cb, (void *)2);
 126         rte_eal_alarm_set(10 * US_PER_MS, test_multi_cb, (void *)1);
 127         rm_count = rte_eal_alarm_cancel(test_multi_cb, (void *)2);
 128
 129         rte_delay_ms(35);
 130         if (cb_count.cnt != 2 || rm_count != 1) {
 131                 printf("Error: invalid flags count or alarm removal failure"
 132                                 " -  flags value = %d, expected = %d\n",
 133                                 (int)cb_count.cnt, 2);
 134                 /* remove any callbacks that might remain */
 135                 rte_eal_alarm_cancel(test_multi_cb, (void *)-1);
 136                 return -1;
 137         }
 138
 139         printf("Testing adding and then removing multiple alarms\n");
 140         /* finally test that no callbacks are called if we delete them all*/
 141         rte_eal_alarm_set(10 * US_PER_MS, test_multi_cb, (void *)1);
 142         rte_eal_alarm_set(10 * US_PER_MS, test_multi_cb, (void *)2);
 143         rte_eal_alarm_set(10 * US_PER_MS, test_multi_cb, (void *)3);
 144         rm_count = rte_eal_alarm_cancel(test_alarm_callback, (void *)-1);
 145         if (rm_count != 0) {
 146                 printf("Error removing non-existant alarm succeeded\n");
 147                 rte_eal_alarm_cancel(test_multi_cb, (void *) -1);
 148                 return -1;
 149         }
 150         rm_count = rte_eal_alarm_cancel(test_multi_cb, (void *) -1);
 151         if (rm_count != 3) {
 152                 printf("Error removing all pending alarm callbacks\n");
 153                 return -1;
 154         }
 155
 156         /* Test that we cannot cancel an alarm from within the callback itself
 157          * Also test that we can cancel head-of-line callbacks ok.*/
 158         flag = 0;
 159         recursive_error = 0;
 160         rte_eal_alarm_set(10 * US_PER_MS, test_remove_in_callback, (void *)1);
 161         rte_eal_alarm_set(20 * US_PER_MS, test_remove_in_callback, (void *)2);
 162         rm_count = rte_eal_alarm_cancel(test_remove_in_callback, (void *)1);
 163         if (rm_count != 1) {
 164                 printf("Error cancelling head-of-list callback\n");
 165                 return -1;
 166         }
 167         rte_delay_ms(15);
 168         if (flag != 0) {
 169                 printf("Error, cancelling head-of-list leads to premature callback\n");
 170                 return -1;
 171         }
 172         rte_delay_ms(10);
 173         if (flag != 2) {
 174                 printf("Error - expected callback not called\n");
 175                 rte_eal_alarm_cancel(test_remove_in_callback, (void *)-1);
 176                 return -1;
 177         }
 178         if (recursive_error == 1)
 179                 return -1;
 180
 181         /* Check if it can cancel all for the same callback */
 182         printf("Testing canceling all for the same callback\n");
 183         flag_2 = 0;
 184         rte_eal_alarm_set(10 * US_PER_MS, test_remove_in_callback, (void *)1);
 185         rte_eal_alarm_set(20 * US_PER_MS, test_remove_in_callback_2, (void *)2);
 186         rte_eal_alarm_set(30 * US_PER_MS, test_remove_in_callback_2, (void *)3);
 187         rte_eal_alarm_set(40 * US_PER_MS, test_remove_in_callback, (void *)4);
 188         rm_count = rte_eal_alarm_cancel(test_remove_in_callback_2, (void *)-1);
 189         if (rm_count != 2) {
 190                 printf("Error, cannot cancel all for the same callback\n");
 191                 return -1;
 192         }
 193         rm_count = rte_eal_alarm_cancel(test_remove_in_callback, (void *)-1);
 194         if (rm_count != 2) {
 195                 printf("Error, cannot cancel all for the same callback\n");
 196                 return -1;
 197         }
 198
 199         return 0;
 200 }
 201
 202 static int
 203 test_alarm(void)
 204 {
 205         int count = 0;
 206
 207         /* check if the callback will be called */
 208         printf("check if the callback will be called\n");
 209         flag = 0;
 210         if (rte_eal_alarm_set(RTE_TEST_ALARM_TIMEOUT * US_PER_MS,
 211                         test_alarm_callback, NULL) < 0) {
 212                 printf("fail to set alarm callback\n");
 213                 return -1;
 214         }
 215         while (flag == 0 && count ++ < 6)
 216                 rte_delay_ms(RTE_TEST_CHECK_PERIOD);
 217
 218         if (flag == 0){
 219                 printf("Callback not called\n");
 220                 return -1;
 221         }
 222
 223         /* check if it will fail to set alarm with wrong us value */
 224         printf("check if it will fail to set alarm with wrong ms values\n");
 225         if (rte_eal_alarm_set(0, test_alarm_callback,
 226                                                 NULL) >= 0) {
 227                 printf("should not be successful with 0 us value\n");
 228                 return -1;
 229         }
 230         if (rte_eal_alarm_set(UINT64_MAX - 1, test_alarm_callback,
 231                                                 NULL) >= 0) {
 232                 printf("should not be successful with (UINT64_MAX-1) us value\n");
 233                 return -1;
 234         }
 235
 236         /* check if it will fail to set alarm with null callback parameter */
 237         printf("check if it will fail to set alarm with null callback parameter\n");
 238         if (rte_eal_alarm_set(RTE_TEST_ALARM_TIMEOUT, NULL, NULL) >= 0) {
 239                 printf("should not be successful to set alarm with null callback parameter\n");
 240                 return -1;
 241         }
 242
 243         /* check if it will fail to remove alarm with null callback parameter */
 244         printf("check if it will fail to remove alarm with null callback parameter\n");
 245         if (rte_eal_alarm_cancel(NULL, NULL) == 0) {
 246                 printf("should not be successful to remove alarm with null callback parameter");
 247                 return -1;
 248         }
 249
 250         if (test_multi_alarms() != 0)
 251                 return -1;
 252
 253         return 0;
 254 }
 255
 256 REGISTER_TEST_COMMAND(alarm_autotest, test_alarm);