src/plugins/ctf/fs-sink/fs-sink-trace.h

   1 #ifndef BABELTRACE_PLUGIN_CTF_FS_SINK_FS_SINK_TRACE_H
   2 #define BABELTRACE_PLUGIN_CTF_FS_SINK_FS_SINK_TRACE_H
   3
   4 /*
   5  * Copyright 2019 Philippe Proulx <pproulx@efficios.com>
   6  *
   7  * Permission is hereby granted, free of charge, to any person obtaining a copy
   8  * of this software and associated documentation files (the "Software"), to deal
   9  * in the Software without restriction, including without limitation the rights
  10  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  11  * copies of the Software, and to permit persons to whom the Software is
  12  * furnished to do so, subject to the following conditions:
  13  *
  14  * The above copyright notice and this permission notice shall be included in
  15  * all copies or substantial portions of the Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  18  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  20  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  21  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  22  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  23  * SOFTWARE.
  24  */
  25
  26 #include "common/macros.h"
  27 #include <babeltrace2/babeltrace.h>
  28 #include "ctfser/ctfser.h"
  29 #include <glib.h>
  30 #include <stdbool.h>
  31 #include <stdint.h>
  32
  33 #include "fs-sink-ctf-meta.h"
  34
  35 struct fs_sink_comp;
  36
  37 struct fs_sink_trace {
  38         struct fs_sink_comp *fs_sink;
  39
  40         /* Owned by this */
  41         struct fs_sink_ctf_trace_class *tc;
  42
  43         /*
  44          * Weak reference: this object does not own it, and `tc` above
  45          * does not own its trace IR trace class either. Instead, we add
  46          * a "trace destruction" listener (in create_trace()) so that
  47          * this object gets destroyed when the trace object is
  48          * destroyed.
  49          *
  50          * Otherwise (with a strong reference), we would keep this trace
  51          * object alive until the upstream message iterator ends. This
  52          * could "leak" resources (memory, file descriptors) associated
  53          * to traces and streams which otherwise would not exist.
  54          */
  55         const bt_trace *ir_trace;
  56
  57         uint64_t ir_trace_destruction_listener_id;
  58
  59         /* Trace's directory */
  60         GString *path;
  61
  62         /* `metadata` file path */
  63         GString *metadata_path;
  64
  65         /*
  66          * Hash table of `const bt_stream *` (weak) to
  67          * `struct fs_sink_stream *` (owned by hash table).
  68          */
  69         GHashTable *streams;
  70 };
  71
  72 BT_HIDDEN
  73 struct fs_sink_trace *fs_sink_trace_create(struct fs_sink_comp *fs_sink,
  74                 const bt_trace *ir_trace);
  75
  76 BT_HIDDEN
  77 void fs_sink_trace_destroy(struct fs_sink_trace *trace);
  78
  79 #endif /* BABELTRACE_PLUGIN_CTF_FS_SINK_FS_SINK_TRACE_H */