examples/ip_pipeline/thread.c

   1 /*-
   2  *   BSD LICENSE
   3  *
   4  *   Copyright(c) 2010-2015 Intel Corporation. All rights reserved.
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  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
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  19  *       from this software without specific prior written permission.
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  21  *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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  24  *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  25  *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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  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 <rte_common.h>
  35 #include <rte_cycles.h>
  36 #include <rte_pipeline.h>
  37
  38 #include "pipeline_common_be.h"
  39 #include "app.h"
  40
  41 int app_thread(void *arg)
  42 {
  43         struct app_params *app = (struct app_params *) arg;
  44         uint32_t core_id = rte_lcore_id(), i, j;
  45         struct app_thread_data *t = &app->thread_data[core_id];
  46         uint32_t n_regular = RTE_MIN(t->n_regular, RTE_DIM(t->regular));
  47         uint32_t n_custom = RTE_MIN(t->n_custom, RTE_DIM(t->custom));
  48
  49         for (i = 0; ; i++) {
  50                 /* Run regular pipelines */
  51                 for (j = 0; j < n_regular; j++) {
  52                         struct app_thread_pipeline_data *data = &t->regular[j];
  53                         struct pipeline *p = data->be;
  54
  55                         rte_pipeline_run(p->p);
  56                 }
  57
  58                 /* Run custom pipelines */
  59                 for (j = 0; j < n_custom; j++) {
  60                         struct app_thread_pipeline_data *data = &t->custom[j];
  61
  62                         data->f_run(data->be);
  63                 }
  64
  65                 /* Timer */
  66                 if ((i & 0xF) == 0) {
  67                         uint64_t time = rte_get_tsc_cycles();
  68                         uint64_t t_deadline = UINT64_MAX;
  69
  70                         if (time < t->deadline)
  71                                 continue;
  72
  73                         /* Timer for regular pipelines */
  74                         for (j = 0; j < n_regular; j++) {
  75                                 struct app_thread_pipeline_data *data =
  76                                         &t->regular[j];
  77                                 uint64_t p_deadline = data->deadline;
  78
  79                                 if (p_deadline <= time) {
  80                                         data->f_timer(data->be);
  81                                         p_deadline = time + data->timer_period;
  82                                         data->deadline = p_deadline;
  83                                 }
  84
  85                                 if (p_deadline < t_deadline)
  86                                         t_deadline = p_deadline;
  87                         }
  88
  89                         /* Timer for custom pipelines */
  90                         for (j = 0; j < n_custom; j++) {
  91                                 struct app_thread_pipeline_data *data =
  92                                         &t->custom[j];
  93                                 uint64_t p_deadline = data->deadline;
  94
  95                                 if (p_deadline <= time) {
  96                                         data->f_timer(data->be);
  97                                         p_deadline = time + data->timer_period;
  98                                         data->deadline = p_deadline;
  99                                 }
 100
 101                                 if (p_deadline < t_deadline)
 102                                         t_deadline = p_deadline;
 103                         }
 104
 105                         t->deadline = t_deadline;
 106                 }
 107         }
 108
 109         return 0;
 110 }