src/common/actions/notify.c

   1 /*
   2  * Copyright (C) 2017 Jérémie Galarneau <jeremie.galarneau@efficios.com>
   3  *
   4  * SPDX-License-Identifier: LGPL-2.1-only
   5  *
   6  */
   7
   8 #include <lttng/action/action-internal.h>
   9 #include <lttng/action/notify-internal.h>
  10 #include <common/macros.h>
  11 #include <assert.h>
  12
  13 static
  14 void lttng_action_notify_destroy(struct lttng_action *action)
  15 {
  16         free(action);
  17 }
  18
  19 static
  20 int lttng_action_notify_serialize(struct lttng_action *action,
  21                 struct lttng_payload *payload)
  22 {
  23         return 0;
  24 }
  25
  26 static
  27 bool lttng_action_notify_is_equal(const struct lttng_action *a,
  28                 const struct lttng_action *b)
  29 {
  30         /* There is no discriminant between notify actions. */
  31         return true;
  32 }
  33
  34 struct lttng_action *lttng_action_notify_create(void)
  35 {
  36         struct lttng_action_notify *notify;
  37
  38         notify = zmalloc(sizeof(struct lttng_action_notify));
  39         if (!notify) {
  40                 goto end;
  41         }
  42
  43         lttng_action_init(&notify->parent, LTTNG_ACTION_TYPE_NOTIFY, NULL,
  44                         lttng_action_notify_serialize,
  45                         lttng_action_notify_is_equal,
  46                         lttng_action_notify_destroy);
  47 end:
  48         return &notify->parent;
  49 }
  50
  51 ssize_t lttng_action_notify_create_from_payload(
  52                 struct lttng_payload_view *view,
  53                 struct lttng_action **action)
  54 {
  55         ssize_t consumed_length;
  56
  57         *action = lttng_action_notify_create();
  58         if (!*action) {
  59                 consumed_length = -1;
  60                 goto end;
  61         }
  62
  63         consumed_length = 0;
  64 end:
  65         return consumed_length;
  66 }