API : iterator get and set position
[babeltrace.git] / lib / trace-handle.c
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1/*
2 * trace_handle.c
3 *
4 * Babeltrace Library
5 *
6 * Copyright 2012 EfficiOS Inc. and Linux Foundation
7 *
8 * Author: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
9 * Julien Desfossez <julien.desfossez@efficios.com>
10 *
11 * Permission is hereby granted, free of charge, to any person obtaining a copy
12 * of this software and associated documentation files (the "Software"), to deal
13 * in the Software without restriction, including without limitation the rights
14 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
15 * copies of the Software, and to permit persons to whom the Software is
16 * furnished to do so, subject to the following conditions:
17 *
18 * The above copyright notice and this permission notice shall be included in
19 * all copies or substantial portions of the Software.
20 */
21
22#include <stdint.h>
23#include <stdlib.h>
24#include <babeltrace/babeltrace.h>
25#include <babeltrace/context.h>
26#include <babeltrace/trace-handle.h>
27#include <babeltrace/trace-handle-internal.h>
28
29struct bt_trace_handle *bt_trace_handle_create(struct bt_context *ctx)
30{
31 struct bt_trace_handle *th;
32
33 th = calloc(1, sizeof(struct bt_trace_handle));
34 if (!th) {
35 perror("allocating trace_handle");
36 return NULL;
37 }
38 if (!ctx)
39 return NULL;
40
41 th->id = ctx->last_trace_handle_id++;
42 return th;
43}
44
45void bt_trace_handle_destroy(struct bt_trace_handle *bt)
46{
47 if (bt)
48 free(bt);
49}
50
51char *bt_trace_handle_get_path(struct bt_trace_handle *th)
52{
53 if (th && th->path)
54 return th->path;
55 return NULL;
56}
57
58uint64_t bt_trace_handle_get_timestamp_begin(struct bt_trace_handle *th)
59{
60 if (th)
61 return th->timestamp_begin;
62 return -1ULL;
63}
64
65uint64_t bt_trace_handle_get_timestamp_end(struct bt_trace_handle *th)
66{
67 if (th)
68 return th->timestamp_end;
69 return -1ULL;
70}
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