#include <babeltrace/context-internal.h>
#include <babeltrace/compat/uuid.h>
#include <babeltrace/endian.h>
+#include <babeltrace/trace-debuginfo.h>
#include <babeltrace/ctf/ctf-index.h>
#include <inttypes.h>
#include <stdio.h>
#include "metadata/ctf-ast.h"
#include "events-private.h"
#include <babeltrace/compat/memstream.h>
+#include <babeltrace/compat/fcntl.h>
#define LOG2_CHAR_BIT 3
uint64_t opt_clock_offset_ns;
extern int yydebug;
+char *opt_debug_dir;
/*
* TODO: babeltrace_ctf_console_output ensures that we only print
* Given we have discarded counters of those two types merged into the
* events_discarded counter, we need to use the union of those ranges:
* [ prev_timestamp_end, timestamp_end ]
+ *
+ * Lost packets occur if the tracer overwrote some subbuffer(s) before the
+ * consumer had time to extract them. We keep track of those gaps with the
+ * packet sequence number in each packet.
*/
static
-void ctf_print_discarded(FILE *fp, struct ctf_stream_definition *stream)
+void ctf_print_discarded_lost(FILE *fp, struct ctf_stream_definition *stream)
{
- if (!stream->events_discarded || !babeltrace_ctf_console_output) {
+ if ((!stream->events_discarded && !stream->packets_lost) ||
+ !babeltrace_ctf_console_output) {
return;
}
fflush(stdout);
- fprintf(fp, "[warning] Tracer discarded %" PRIu64 " events between [",
- stream->events_discarded);
+ if (stream->events_discarded) {
+ fprintf(fp, "[warning] Tracer discarded %" PRIu64 " events between [",
+ stream->events_discarded);
+ } else if (stream->packets_lost) {
+ fprintf(fp, "[warning] Tracer lost %" PRIu64 " trace packets between [",
+ stream->packets_lost);
+ }
if (opt_clock_cycles) {
ctf_print_timestamp(fp, stream,
stream->prev.cycles.end);
struct packet_index *cur_index)
{
uint64_t events_discarded_diff;
+ uint64_t packets_lost_diff = 0;
/* Update packet index time information */
prev_index->ts_real.timestamp_end;
events_discarded_diff -= prev_index->events_discarded;
+ /* packet_seq_num stays at 0 if not produced by the tracer */
+ if (cur_index->packet_seq_num) {
+ packets_lost_diff = cur_index->packet_seq_num -
+ prev_index->packet_seq_num - 1;
+ }
/*
* Deal with 32-bit wrap-around if the tracer provided a
* 32-bit field.
stream->current.real.begin;
}
stream->events_discarded = events_discarded_diff;
+ stream->packets_lost = packets_lost_diff;
+}
+
+/*
+ * Find the timerange where all the streams in the trace are active
+ * simultaneously.
+ *
+ * Return 0 and update begin/end if necessary on success, return 1 for
+ * empty streams and return a negative value on error.
+ */
+static
+int ctf_intersect_trace(struct bt_trace_descriptor *td_read,
+ uint64_t *begin, uint64_t *end)
+{
+ struct ctf_trace *tin;
+ int stream_id, ret = 0;
+
+ tin = container_of(td_read, struct ctf_trace, parent);
+
+ for (stream_id = 0; stream_id < tin->streams->len;
+ stream_id++) {
+ int filenr;
+ struct ctf_stream_declaration *stream_class;
+
+ stream_class = g_ptr_array_index(tin->streams, stream_id);
+ if (!stream_class) {
+ continue;
+ }
+ for (filenr = 0; filenr < stream_class->streams->len; filenr++) {
+ struct ctf_file_stream *file_stream;
+ struct ctf_stream_pos *stream_pos;
+ struct packet_index *index;
+
+ file_stream = g_ptr_array_index(stream_class->streams,
+ filenr);
+ if (!file_stream) {
+ continue;
+ }
+ stream_pos = &file_stream->pos;
+ if (!stream_pos->packet_index ||
+ stream_pos->packet_index->len <= 0) {
+ ret = 1;
+ goto end;
+ }
+ index = &g_array_index(stream_pos->packet_index,
+ struct packet_index, 0);
+ if (index->ts_real.timestamp_begin > *begin) {
+ *begin = index->ts_real.timestamp_begin;
+ }
+ index = &g_array_index(stream_pos->packet_index,
+ struct packet_index,
+ stream_pos->packet_index->len - 1);
+ if (index->ts_real.timestamp_end < *end) {
+ *end = index->ts_real.timestamp_end;
+ }
+ }
+ }
+
+end:
+ return ret;
+}
+
+/*
+ * Find the timerange where all streams in the trace collection are active
+ * simultaneously.
+ *
+ * Return 0 on success.
+ * Return 1 if no intersections are found.
+ * Return a negative value on error.
+ */
+int ctf_find_packets_intersection(struct bt_context *ctx,
+ uint64_t *ts_begin, uint64_t *ts_end)
+{
+ int ret, i;
+
+ if (!ctx || !ctx->tc || !ctx->tc->array) {
+ ret = -EINVAL;
+ goto end;
+ }
+
+ for (i = 0; i < ctx->tc->array->len; i++) {
+ struct bt_trace_descriptor *td_read;
+
+ td_read = g_ptr_array_index(ctx->tc->array, i);
+ if (!td_read) {
+ continue;
+ }
+ ret = ctf_intersect_trace(td_read, ts_begin, ts_end);
+ if (ret) {
+ goto end;
+ }
+ }
+ if (*ts_end < *ts_begin) {
+ ret = 1;
+ } else {
+ ret = 0;
+ }
+end:
+ return ret;
}
/*
struct ctf_file_stream *file_stream =
container_of(pos, struct ctf_file_stream, pos);
int ret;
- off_t off;
struct packet_index *packet_index, *prev_index;
switch (whence) {
}
pos->content_size = -1U; /* Unknown at this point */
pos->packet_size = WRITE_PACKET_LEN;
- off = posix_fallocate(pos->fd, pos->mmap_offset,
- pos->packet_size / CHAR_BIT);
- assert(off == 0);
+ do {
+ ret = bt_posix_fallocate(pos->fd, pos->mmap_offset,
+ pos->packet_size / CHAR_BIT);
+ } while (ret == EINTR);
+ assert(ret == 0);
pos->offset = 0;
} else {
read_next_packet:
assert(0);
}
+ if (pos->cur_index >= pos->packet_index->len) {
+ pos->offset = EOF;
+ return;
+ }
+
packet_index = &g_array_index(pos->packet_index,
struct packet_index, pos->cur_index);
if (pos->cur_index > 0) {
ctf_update_current_packet_index(&file_stream->parent,
prev_index, packet_index);
- if (pos->cur_index >= pos->packet_index->len) {
- pos->offset = EOF;
- return;
- }
-
/*
* We need to check if we are in trace read or called
* from packet indexing. In this last case, the
* timestamps.
*/
if ((&file_stream->parent)->stream_class->trace->parent.collection) {
- ctf_print_discarded(stderr, &file_stream->parent);
+ ctf_print_discarded_lost(stderr, &file_stream->parent);
}
packet_index = &g_array_index(pos->packet_index,
int ret;
begin:
+ memset(&packet_index, 0, sizeof(packet_index));
if (!pos->mmap_offset) {
first_packet = 1;
}
pos->offset = 0; /* Position of the packet header */
packet_index.offset = pos->mmap_offset;
- packet_index.content_size = 0;
- packet_index.packet_size = 0;
- packet_index.ts_real.timestamp_begin = 0;
- packet_index.ts_real.timestamp_end = 0;
- packet_index.ts_cycles.timestamp_begin = 0;
- packet_index.ts_cycles.timestamp_end = 0;
- packet_index.events_discarded = 0;
- packet_index.events_discarded_len = 0;
/* read and check header, set stream id (and check) */
if (file_stream->parent.trace_packet_header) {
packet_index.events_discarded = bt_get_unsigned_int(field);
packet_index.events_discarded_len = bt_get_int_len(field);
}
+
+ /* read packet_seq_num from header */
+ len_index = bt_struct_declaration_lookup_field_index(
+ file_stream->parent.stream_packet_context->declaration,
+ g_quark_from_static_string("packet_seq_num"));
+ if (len_index >= 0) {
+ struct bt_definition *field;
+
+ field = bt_struct_definition_get_field_from_index(
+ file_stream->parent.stream_packet_context,
+ len_index);
+ packet_index.packet_seq_num = bt_get_unsigned_int(field);
+ }
} else {
/* Use file size for packet size */
packet_index.packet_size = filesize * CHAR_BIT;
struct ctf_packet_index *ctf_index = NULL;
struct ctf_packet_index_file_hdr index_hdr;
struct packet_index index;
- uint32_t packet_index_len;
+ uint32_t packet_index_len, index_minor;
int ret = 0;
int first_packet = 1;
size_t len;
ret = -1;
goto error;
}
+ index_minor = be32toh(index_hdr.index_minor);
+
packet_index_len = be32toh(index_hdr.packet_index_len);
if (packet_index_len == 0) {
fprintf(stderr, "[error] Packet index length cannot be 0.\n");
index.events_discarded_len = 64;
index.data_offset = -1;
stream_id = be64toh(ctf_index->stream_id);
+ if (index_minor >= 1) {
+ index.stream_instance_id = be64toh(ctf_index->stream_instance_id);
+ index.packet_seq_num = be64toh(ctf_index->packet_seq_num);
+ }
if (!first_packet) {
/* add index to packet array */
snprintf(index_name, strlen(path) + sizeof(INDEX_PATH),
INDEX_PATH, path);
- if (faccessat(td->dirfd, index_name, O_RDONLY, flags) < 0) {
+ if (bt_faccessat(td->dirfd, td->parent.path, index_name, O_RDONLY, 0) < 0) {
ret = create_stream_packet_index(td, file_stream);
if (ret) {
fprintf(stderr, "[error] Stream index creation error.\n");
goto error;
}
+ ret = trace_debug_info_create(td);
+ if (ret) {
+ goto error;
+ }
+
return &td->parent;
error:
+ trace_debug_info_destroy(td);
g_free(td);
return NULL;
}
if (ret)
goto error_free;
+ ret = trace_debug_info_create(td);
+ if (ret) {
+ goto error_free;
+ }
+
return &td->parent;
error_free:
}
}
free(td->metadata_string);
+ trace_debug_info_destroy(td);
g_free(td);
return 0;
}
projects / babeltrace.git / blobdiff