Add trace C file called trace.c
[lttng-tools.git] / ltt-sessiond / trace.c
CommitLineData
d4a2a84a
DG
1/*
2 * Copyright (C) 2011 - David Goulet <david.goulet@polymtl.ca>
3 *
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License
6 * as published by the Free Software Foundation; either version 2
7 * of the License, or (at your option) any later version.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
17 */
18
19#define _GNU_SOURCE
20#include <errno.h>
21#include <limits.h>
22#include <stdio.h>
23#include <stdlib.h>
24#include <urcu/list.h>
25
26#include "lttngerr.h"
27#include "trace.h"
28#include "session.h"
29
30/*
31 * find_session_ust_trace_by_pid
32 *
33 * Iterate over the session ust_traces and
34 * return a pointer or NULL if not found.
35 */
36struct ltt_ust_trace *find_session_ust_trace_by_pid(struct ltt_session *session, pid_t pid)
37{
38 struct ltt_ust_trace *iter;
39
40 cds_list_for_each_entry(iter, &session->ust_traces, list) {
41 if (iter->pid == pid) {
42 /* Found */
43 return iter;
44 }
45 }
46
47 return NULL;
48}
49
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