Rename data structure for naming consistency
[lttng-tools.git] / ltt-sessiond / trace.c
CommitLineData
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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>
1657e9bb 24#include <string.h>
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25#include <urcu/list.h>
26
27#include "lttngerr.h"
28#include "trace.h"
29#include "session.h"
30
31/*
32 * find_session_ust_trace_by_pid
33 *
34 * Iterate over the session ust_traces and
35 * return a pointer or NULL if not found.
36 */
37struct ltt_ust_trace *find_session_ust_trace_by_pid(struct ltt_session *session, pid_t pid)
38{
39 struct ltt_ust_trace *iter;
40
41 cds_list_for_each_entry(iter, &session->ust_traces, list) {
42 if (iter->pid == pid) {
43 /* Found */
44 return iter;
45 }
46 }
47
48 return NULL;
49}
50
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51/*
52 * get_trace_count_per_session
53 *
54 * Return the total count of traces (ust and kernel)
55 * for the specified session.
56 */
57int get_trace_count_per_session(struct ltt_session *session)
58{
59 return session->ust_trace_count + session->kern_trace_count;
60}
61
62/*
63 * get_traces_per_session
64 *
65 * Fill the lttng_trace array of all the
66 * available trace of the session.
67 */
68void get_traces_per_session(struct ltt_session *session, struct lttng_trace *traces)
69{
70 int i = 0;
71 struct ltt_ust_trace *ust_iter;
72 struct ltt_kernel_trace *kern_iter;
73 struct lttng_trace trace;
74
75 DBG("Getting userspace traces for session %s", session->name);
76
77 /* Getting userspace traces */
78 cds_list_for_each_entry(ust_iter, &session->ust_traces, list) {
79 trace.type = USERSPACE;
80 trace.pid = ust_iter->pid;
81 strncpy(trace.name, ust_iter->name, sizeof(trace.name));
82 trace.name[sizeof(trace.name) - 1] = '\0';
83 memcpy(&traces[i], &trace, sizeof(trace));
84 memset(&trace, 0, sizeof(trace));
85 i++;
86 }
87
88 DBG("Getting kernel traces for session %s", session->name);
89
90 /* Getting kernel traces */
91 cds_list_for_each_entry(kern_iter, &session->kernel_traces, list) {
92 trace.type = KERNEL;
93 strncpy(trace.name, kern_iter->name, sizeof(trace.name));
94 trace.name[sizeof(trace.name) - 1] = '\0';
95 memcpy(&traces[i], &trace, sizeof(trace));
96 memset(&trace, 0, sizeof(trace));
97 i++;
98 }
99}
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