#include <stdbool.h>
#include <glib.h>
#include <babeltrace/babeltrace-internal.h>
-#include <babeltrace/ctf-ir/trace.h>
+#include <babeltrace/babeltrace.h>
#include "../common/notif-iter/notif-iter.h"
#include "lttng-index.h"
struct ctf_fs_trace;
struct ctf_fs_ds_file;
-struct index_entry {
- uint64_t offset; /* in bytes. */
- uint64_t packet_size; /* in bytes. */
- /* relative to the packet context field's mapped clock. */
+struct ctf_fs_ds_index_entry {
+ /* Position, in bytes, of the packet from the beginning of the file. */
+ uint64_t offset;
+
+ /* Size of the packet, in bytes. */
+ uint64_t packet_size;
+
+ /*
+ * Extracted from the packet context, relative to the respective fields'
+ * mapped clock classes (in cycles).
+ */
uint64_t timestamp_begin, timestamp_end;
+
+ /*
+ * Converted from the packet context, relative to the trace's EPOCH
+ * (in ns since EPOCH).
+ */
+ int64_t timestamp_begin_ns, timestamp_end_ns;
};
-struct index {
- GArray *entries; /* Array of struct index_entry. */
+struct ctf_fs_ds_index {
+ /* Array of struct ctf_fs_fd_index_entry. */
+ GArray *entries;
+};
+
+struct ctf_fs_ds_file_info {
+ /*
+ * Owned by this. May be NULL.
+ *
+ * A stream cannot be assumed to be indexed as the indexing might have
+ * been skipped. Moreover, the index's fields may not all be available
+ * depending on the producer (e.g. timestamp_begin/end are not
+ * mandatory).
+ *
+ * FIXME In such cases (missing fields), the indexing is aborted as
+ * no the index entries don't have a concept of fields being present
+ * or not.
+ */
+ struct ctf_fs_ds_index *index;
+
+ /* Owned by this. */
+ GString *path;
+
+ /* Guaranteed to be set, as opposed to the index. */
+ int64_t begin_ns;
+};
+
+struct ctf_fs_metadata;
+
+struct ctf_fs_ds_file {
+ /* Weak */
+ struct ctf_fs_metadata *metadata;
+
+ /* Weak */
+ struct bt_self_notification_iterator *pc_notif_iter;
+
+ /* Owned by this */
+ struct ctf_fs_file *file;
+
+ /* Owned by this */
+ struct bt_stream *stream;
+
+ /* Weak */
+ struct bt_notif_iter *notif_iter;
+
+ void *mmap_addr;
+
+ /*
+ * Max length of chunk to mmap() when updating the current mapping.
+ * This value must be page-aligned.
+ */
+ size_t mmap_max_len;
+
+ /* Length of the current mapping. Never exceeds the file's length. */
+ size_t mmap_len;
+
+ /* Offset in the file where the current mapping starts. */
+ off_t mmap_offset;
+
+ /*
+ * Offset, in the current mapping, of the address to return on the next
+ * request.
+ */
+ off_t request_offset;
+
+ bool end_reached;
};
BT_HIDDEN
struct ctf_fs_ds_file *ctf_fs_ds_file_create(
struct ctf_fs_trace *ctf_fs_trace,
- struct bt_ctf_stream *stream, const char *path,
- bool build_index);
+ struct bt_self_notification_iterator *pc_notif_iter,
+ struct bt_notif_iter *notif_iter,
+ struct bt_stream *stream, const char *path);
BT_HIDDEN
-int ctf_fs_ds_file_get_packet_header_context_fields(
- struct ctf_fs_trace *ctf_fs_trace, const char *path,
- struct bt_ctf_field **packet_header_field,
- struct bt_ctf_field **packet_context_field);
+int ctf_fs_ds_file_borrow_packet_header_context_fields(
+ struct ctf_fs_ds_file *ds_file,
+ struct bt_field **packet_header_field,
+ struct bt_field **packet_context_field);
BT_HIDDEN
void ctf_fs_ds_file_destroy(struct ctf_fs_ds_file *stream);
BT_HIDDEN
-struct bt_notification_iterator_next_return ctf_fs_ds_file_next(
- struct ctf_fs_ds_file *stream);
+enum bt_notification_iterator_status ctf_fs_ds_file_next(
+ struct ctf_fs_ds_file *ds_file,
+ struct bt_private_notification **notif);
+
+BT_HIDDEN
+struct ctf_fs_ds_index *ctf_fs_ds_file_build_index(
+ struct ctf_fs_ds_file *ds_file);
+
+BT_HIDDEN
+void ctf_fs_ds_index_destroy(struct ctf_fs_ds_index *index);
+
+extern struct bt_notif_iter_medium_ops ctf_fs_ds_file_medops;
#endif /* CTF_FS_DS_FILE_H */