src/common/event.c

   1 /*
   2  * Copyright (C) 2018 - Jérémie Galarneau <jeremie.galarneau@efficios.com>
   3  *
   4  * This library is free software; you can redistribute it and/or modify it
   5  * under the terms of the GNU Lesser General Public License, version 2.1 only,
   6  * as published by the Free Software Foundation.
   7  *
   8  * This library is distributed in the hope that it will be useful, but WITHOUT
   9  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  10  * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
  11  * for more details.
  12  *
  13  * You should have received a copy of the GNU Lesser General Public License
  14  * along with this library; if not, write to the Free Software Foundation,
  15  * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  16  */
  17
  18 #include <lttng/event-internal.h>
  19 #include <common/error.h>
  20
  21 LTTNG_HIDDEN
  22 struct lttng_event *lttng_event_copy(const struct lttng_event *event)
  23 {
  24         struct lttng_event *new_event;
  25         struct lttng_event_extended *new_event_extended;
  26
  27         new_event = zmalloc(sizeof(*event));
  28         if (!new_event) {
  29                 PERROR("Error allocating event structure");
  30                 goto end;
  31         }
  32
  33         /* Copy the content of the old event. */
  34         memcpy(new_event, event, sizeof(*event));
  35
  36         /*
  37          * We need to create a new extended since the previous pointer is now
  38          * invalid.
  39          */
  40         new_event_extended = zmalloc(sizeof(*new_event_extended));
  41         if (!new_event_extended) {
  42                 PERROR("Error allocating event extended structure");
  43                 goto error;
  44         }
  45
  46         new_event->extended.ptr = new_event_extended;
  47 end:
  48         return new_event;
  49 error:
  50         free(new_event);
  51         new_event = NULL;
  52         goto end;
  53 }