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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> | |
1657e9bb | 24 | #include <string.h> |
d4a2a84a DG |
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 | */ | |
37 | struct 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 | ||
1657e9bb DG |
51 | /* |
52 | * get_trace_count_per_session | |
53 | * | |
54 | * Return the total count of traces (ust and kernel) | |
55 | * for the specified session. | |
56 | */ | |
57 | int 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 | */ | |
68 | void 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 | } |