X-Git-Url: http://git.efficios.com/?p=babeltrace.git;a=blobdiff_plain;f=formats%2Fctf%2Fctf.c;h=32206166b2a2c43a637dbf7e0e36489d297bd0da;hp=23a2179bbf19851bb4685143df0c3301a4e2959d;hb=30c276af575248a4f83e594c987264f6caa238ba;hpb=ddbc52af0c37d5a259f1921fa42bf21097f44793 diff --git a/formats/ctf/ctf.c b/formats/ctf/ctf.c index 23a2179b..32206166 100644 --- a/formats/ctf/ctf.c +++ b/formats/ctf/ctf.c @@ -21,13 +21,16 @@ #include #include #include -#include +#include +#include +#include +#include +#include +#include #include #include -#include #include #include -#include #include #include #include @@ -39,6 +42,8 @@ #include "metadata/ctf-scanner.h" #include "metadata/ctf-parser.h" #include "metadata/ctf-ast.h" +#include "events-private.h" +#include "memstream.h" /* * We currently simply map a page to read the packet header and packet @@ -46,18 +51,48 @@ */ #define MAX_PACKET_HEADER_LEN (getpagesize() * CHAR_BIT) #define WRITE_PACKET_LEN (getpagesize() * 8 * CHAR_BIT) -#define UUID_LEN 16 /* uuid by value len */ #ifndef min #define min(a, b) (((a) < (b)) ? (a) : (b)) #endif +#define NSEC_PER_SEC 1000000000ULL + +int opt_clock_raw, + opt_clock_seconds, + opt_clock_date, + opt_clock_gmt; + +uint64_t opt_clock_offset; + extern int yydebug; static -struct trace_descriptor *ctf_open_trace(const char *path, int flags); +struct trace_descriptor *ctf_open_trace(const char *path, int flags, + void (*packet_seek)(struct stream_pos *pos, size_t index, + int whence), + FILE *metadata_fp); +static +struct trace_descriptor *ctf_open_mmap_trace( + struct mmap_stream_list *mmap_list, + void (*packet_seek)(struct stream_pos *pos, size_t index, + int whence), + FILE *metadata_fp); +static +void ctf_set_context(struct trace_descriptor *descriptor, + struct bt_context *ctx); +static +void ctf_set_handle(struct trace_descriptor *descriptor, + struct bt_trace_handle *handle); + static void ctf_close_trace(struct trace_descriptor *descriptor); +static +uint64_t ctf_timestamp_begin(struct trace_descriptor *descriptor, + struct bt_trace_handle *handle); +static +uint64_t ctf_timestamp_end(struct trace_descriptor *descriptor, + struct bt_trace_handle *handle); static rw_dispatch read_dispatch_table[] = { @@ -86,18 +121,113 @@ rw_dispatch write_dispatch_table[] = { static struct format ctf_format = { .open_trace = ctf_open_trace, + .open_mmap_trace = ctf_open_mmap_trace, .close_trace = ctf_close_trace, + .set_context = ctf_set_context, + .set_handle = ctf_set_handle, + .timestamp_begin = ctf_timestamp_begin, + .timestamp_end = ctf_timestamp_end, }; static -void ctf_update_timestamp(struct ctf_stream *stream, +uint64_t ctf_timestamp_begin(struct trace_descriptor *descriptor, + struct bt_trace_handle *handle) +{ + struct ctf_trace *tin; + uint64_t begin = ULLONG_MAX; + int i, j; + + tin = container_of(descriptor, struct ctf_trace, parent); + + if (!tin) + goto error; + + /* for each stream_class */ + for (i = 0; i < tin->streams->len; i++) { + struct ctf_stream_declaration *stream_class; + + stream_class = g_ptr_array_index(tin->streams, i); + /* for each file_stream */ + for (j = 0; j < stream_class->streams->len; j++) { + struct ctf_stream_definition *stream; + struct ctf_file_stream *cfs; + struct ctf_stream_pos *stream_pos; + struct packet_index *index; + + stream = g_ptr_array_index(stream_class->streams, j); + cfs = container_of(stream, struct ctf_file_stream, + parent); + stream_pos = &cfs->pos; + + index = &g_array_index(stream_pos->packet_index, + struct packet_index, 0); + if (index->timestamp_begin < begin) + begin = index->timestamp_begin; + } + } + + return begin; + +error: + return -1ULL; +} + +static +uint64_t ctf_timestamp_end(struct trace_descriptor *descriptor, + struct bt_trace_handle *handle) +{ + struct ctf_trace *tin; + uint64_t end = 0; + int i, j; + + tin = container_of(descriptor, struct ctf_trace, parent); + + if (!tin) + goto error; + + /* for each stream_class */ + for (i = 0; i < tin->streams->len; i++) { + struct ctf_stream_declaration *stream_class; + + stream_class = g_ptr_array_index(tin->streams, i); + /* for each file_stream */ + for (j = 0; j < stream_class->streams->len; j++) { + struct ctf_stream_definition *stream; + struct ctf_file_stream *cfs; + struct ctf_stream_pos *stream_pos; + struct packet_index *index; + + stream = g_ptr_array_index(stream_class->streams, j); + cfs = container_of(stream, struct ctf_file_stream, + parent); + stream_pos = &cfs->pos; + + index = &g_array_index(stream_pos->packet_index, + struct packet_index, + stream_pos->packet_index->len - 1); + if (index->timestamp_end > end) + end = index->timestamp_end; + } + } + + return end; + +error: + return -1ULL; +} + +/* + * Update stream current timestamp, keep at clock frequency. + */ +static +void ctf_update_timestamp(struct ctf_stream_definition *stream, struct definition_integer *integer_definition) { struct declaration_integer *integer_declaration = integer_definition->declaration; uint64_t oldval, newval, updateval; - if (integer_declaration->len == 64) { + if (unlikely(integer_declaration->len == 64)) { stream->timestamp = integer_definition->value._unsigned; return; } @@ -112,29 +242,115 @@ void ctf_update_timestamp(struct ctf_stream *stream, updateval = stream->timestamp; updateval &= ~((1ULL << integer_declaration->len) - 1); updateval += newval; + stream->prev_timestamp = stream->timestamp; stream->timestamp = updateval; } +/* + * Print timestamp, rescaling clock frequency to nanoseconds and + * applying offsets as needed (unix time). + */ +void ctf_print_timestamp(FILE *fp, + struct ctf_stream_definition *stream, + uint64_t timestamp) +{ + uint64_t ts_sec = 0, ts_nsec; + + if (opt_clock_raw) { + ts_nsec = ctf_get_timestamp_raw(stream, timestamp); + } else { + ts_nsec = ctf_get_timestamp(stream, timestamp); + } + + /* Add command-line offset */ + ts_sec += opt_clock_offset; + + ts_sec += ts_nsec / NSEC_PER_SEC; + ts_nsec = ts_nsec % NSEC_PER_SEC; + + if (!opt_clock_seconds) { + struct tm tm; + time_t time_s = (time_t) ts_sec; + + if (!opt_clock_gmt) { + struct tm *res; + + res = localtime_r(&time_s, &tm); + if (!res) { + fprintf(stderr, "[warning] Unable to get localtime.\n"); + goto seconds; + } + } else { + struct tm *res; + + res = gmtime_r(&time_s, &tm); + if (!res) { + fprintf(stderr, "[warning] Unable to get gmtime.\n"); + goto seconds; + } + } + if (opt_clock_date) { + char timestr[26]; + size_t res; + + /* Print date and time */ + res = strftime(timestr, sizeof(timestr), + "%F ", &tm); + if (!res) { + fprintf(stderr, "[warning] Unable to print ascii time.\n"); + goto seconds; + } + fprintf(fp, "%s", timestr); + } + /* Print time in HH:MM:SS.ns */ + fprintf(fp, "%02d:%02d:%02d.%09" PRIu64, + tm.tm_hour, tm.tm_min, tm.tm_sec, ts_nsec); + goto end; + } +seconds: + fprintf(fp, "%3" PRIu64 ".%09" PRIu64, + ts_sec, ts_nsec); + +end: + return; +} + static -int ctf_read_event(struct stream_pos *ppos, struct ctf_stream *stream) +int ctf_read_event(struct stream_pos *ppos, struct ctf_stream_definition *stream) { struct ctf_stream_pos *pos = container_of(ppos, struct ctf_stream_pos, parent); - struct ctf_stream_class *stream_class = stream->stream_class; - struct ctf_stream_event *event; + struct ctf_stream_declaration *stream_class = stream->stream_class; + struct ctf_event_definition *event; uint64_t id = 0; int ret; - if (pos->offset == EOF) + /* We need to check for EOF here for empty files. */ + if (unlikely(pos->offset == EOF)) return EOF; + ctf_pos_get_event(pos); + + /* save the current position as a restore point */ + pos->last_offset = pos->offset; + /* we just read the event, it is consumed when used by the caller */ + stream->consumed = 0; + + /* + * This is the EOF check after we've advanced the position in + * ctf_pos_get_event. + */ + if (unlikely(pos->offset == EOF)) + return EOF; + assert(pos->offset < pos->content_size); + /* Read event header */ - if (stream->stream_event_header) { + if (likely(stream->stream_event_header)) { struct definition_integer *integer_definition; struct definition *variant; ret = generic_rw(ppos, &stream->stream_event_header->p); - if (ret) + if (unlikely(ret)) goto error; /* lookup event id */ integer_definition = lookup_integer(&stream->stream_event_header->p, "id", FALSE); @@ -156,6 +372,7 @@ int ctf_read_event(struct stream_pos *ppos, struct ctf_stream *stream) id = integer_definition->value._unsigned; } } + stream->event_id = id; /* lookup timestamp */ stream->has_timestamp = 0; @@ -181,13 +398,13 @@ int ctf_read_event(struct stream_pos *ppos, struct ctf_stream *stream) goto error; } - if (id >= stream_class->events_by_id->len) { - fprintf(stdout, "[error] Event id %" PRIu64 " is outside range.\n", id); + if (unlikely(id >= stream_class->events_by_id->len)) { + fprintf(stderr, "[error] Event id %" PRIu64 " is outside range.\n", id); return -EINVAL; } event = g_ptr_array_index(stream->events_by_id, id); - if (!event) { - fprintf(stdout, "[error] Event id %" PRIu64 " is unknown.\n", id); + if (unlikely(!event)) { + fprintf(stderr, "[error] Event id %" PRIu64 " is unknown.\n", id); return -EINVAL; } @@ -199,7 +416,7 @@ int ctf_read_event(struct stream_pos *ppos, struct ctf_stream *stream) } /* Read event payload */ - if (event->event_fields) { + if (likely(event->event_fields)) { ret = generic_rw(ppos, &event->event_fields->p); if (ret) goto error; @@ -208,44 +425,22 @@ int ctf_read_event(struct stream_pos *ppos, struct ctf_stream *stream) return 0; error: - fprintf(stdout, "[error] Unexpected end of stream. Either the trace data stream is corrupted or metadata description does not match data layout.\n"); + fprintf(stderr, "[error] Unexpected end of stream. Either the trace data stream is corrupted or metadata description does not match data layout.\n"); return ret; } static -int ctf_write_event(struct stream_pos *pos, struct ctf_stream *stream) +int ctf_write_event(struct stream_pos *pos, struct ctf_stream_definition *stream) { - struct ctf_stream_class *stream_class = stream->stream_class; - struct ctf_stream_event *event; - uint64_t id = 0; + struct ctf_stream_declaration *stream_class = stream->stream_class; + struct ctf_event_definition *event; + uint64_t id; int ret; - /* print event header */ - if (stream->stream_event_header) { - struct definition_integer *integer_definition; - struct definition *variant; - - /* lookup event id */ - integer_definition = lookup_integer(&stream->stream_event_header->p, "id", FALSE); - if (integer_definition) { - id = integer_definition->value._unsigned; - } else { - struct definition_enum *enum_definition; - - enum_definition = lookup_enum(&stream->stream_event_header->p, "id", FALSE); - if (enum_definition) { - id = enum_definition->integer->value._unsigned; - } - } - - variant = lookup_variant(&stream->stream_event_header->p, "v"); - if (variant) { - integer_definition = lookup_integer(variant, "id", FALSE); - if (integer_definition) { - id = integer_definition->value._unsigned; - } - } + id = stream->event_id; + /* print event header */ + if (likely(stream->stream_event_header)) { ret = generic_rw(pos, &stream->stream_event_header->p); if (ret) goto error; @@ -258,13 +453,13 @@ int ctf_write_event(struct stream_pos *pos, struct ctf_stream *stream) goto error; } - if (id >= stream_class->events_by_id->len) { - fprintf(stdout, "[error] Event id %" PRIu64 " is outside range.\n", id); + if (unlikely(id >= stream_class->events_by_id->len)) { + fprintf(stderr, "[error] Event id %" PRIu64 " is outside range.\n", id); return -EINVAL; } event = g_ptr_array_index(stream->events_by_id, id); - if (!event) { - fprintf(stdout, "[error] Event id %" PRIu64 " is unknown.\n", id); + if (unlikely(!event)) { + fprintf(stderr, "[error] Event id %" PRIu64 " is unknown.\n", id); return -EINVAL; } @@ -276,7 +471,7 @@ int ctf_write_event(struct stream_pos *pos, struct ctf_stream *stream) } /* Read and print event payload */ - if (event->event_fields) { + if (likely(event->event_fields)) { ret = generic_rw(pos, &event->event_fields->p); if (ret) goto error; @@ -285,7 +480,7 @@ int ctf_write_event(struct stream_pos *pos, struct ctf_stream *stream) return 0; error: - fprintf(stdout, "[error] Unexpected end of stream. Either the trace data stream is corrupted or metadata description does not match data layout.\n"); + fprintf(stderr, "[error] Unexpected end of stream. Either the trace data stream is corrupted or metadata description does not match data layout.\n"); return ret; } @@ -318,7 +513,7 @@ void ctf_init_pos(struct ctf_stream_pos *pos, int fd, int open_flags) pos->parent.rw_table = write_dispatch_table; pos->parent.event_cb = ctf_write_event; if (fd >= 0) - ctf_move_pos_slow(pos, 0, SEEK_SET); /* position for write */ + ctf_packet_seek(&pos->parent, 0, SEEK_SET); /* position for write */ break; default: assert(0); @@ -335,7 +530,7 @@ void ctf_fini_pos(struct ctf_stream_pos *pos) /* unmap old base */ ret = munmap(pos->base, pos->packet_size / CHAR_BIT); if (ret) { - fprintf(stdout, "[error] Unable to unmap old base: %s.\n", + fprintf(stderr, "[error] Unable to unmap old base: %s.\n", strerror(errno)); assert(0); } @@ -343,13 +538,19 @@ void ctf_fini_pos(struct ctf_stream_pos *pos) (void) g_array_free(pos->packet_index, TRUE); } -void ctf_move_pos_slow(struct ctf_stream_pos *pos, size_t offset, int whence) +/* + * for SEEK_CUR: go to next packet. + * for SEEK_POS: go to packet numer (index). + */ +void ctf_packet_seek(struct stream_pos *stream_pos, size_t index, int whence) { + struct ctf_stream_pos *pos = + container_of(stream_pos, struct ctf_stream_pos, parent); struct ctf_file_stream *file_stream = container_of(pos, struct ctf_file_stream, pos); int ret; off_t off; - struct packet_index *index; + struct packet_index *packet_index; if (pos->prot == PROT_WRITE && pos->content_size_loc) *pos->content_size_loc = pos->offset; @@ -358,7 +559,7 @@ void ctf_move_pos_slow(struct ctf_stream_pos *pos, size_t offset, int whence) /* unmap old base */ ret = munmap(pos->base, pos->packet_size / CHAR_BIT); if (ret) { - fprintf(stdout, "[error] Unable to unmap old base: %s.\n", + fprintf(stderr, "[error] Unable to unmap old base: %s.\n", strerror(errno)); assert(0); } @@ -373,11 +574,10 @@ void ctf_move_pos_slow(struct ctf_stream_pos *pos, size_t offset, int whence) switch (whence) { case SEEK_CUR: /* The writer will add padding */ - assert(pos->offset + offset == pos->packet_size); pos->mmap_offset += WRITE_PACKET_LEN / CHAR_BIT; break; case SEEK_SET: - assert(offset == 0); /* only seek supported for now */ + assert(index == 0); /* only seek supported for now */ pos->cur_index = 0; break; default: @@ -390,33 +590,89 @@ void ctf_move_pos_slow(struct ctf_stream_pos *pos, size_t offset, int whence) assert(off >= 0); pos->offset = 0; } else { + read_next_packet: switch (whence) { case SEEK_CUR: + { + uint32_t events_discarded_diff; + + if (pos->offset == EOF) { + return; + } + /* For printing discarded event count */ + packet_index = &g_array_index(pos->packet_index, + struct packet_index, pos->cur_index); + events_discarded_diff = packet_index->events_discarded; + file_stream->parent.prev_timestamp_end = + packet_index->timestamp_end; + if (pos->cur_index > 0) { + packet_index = &g_array_index(pos->packet_index, + struct packet_index, + pos->cur_index - 1); + events_discarded_diff -= packet_index->events_discarded; + } + file_stream->parent.events_discarded = events_discarded_diff; + file_stream->parent.prev_timestamp = file_stream->parent.timestamp; /* The reader will expect us to skip padding */ - assert(pos->offset + offset == pos->content_size); ++pos->cur_index; break; + } case SEEK_SET: - assert(offset == 0); /* only seek supported for now */ - pos->cur_index = 0; + pos->cur_index = index; + file_stream->parent.prev_timestamp = 0; + file_stream->parent.prev_timestamp_end = 0; break; default: assert(0); } if (pos->cur_index >= pos->packet_index->len) { + /* + * When a stream reaches the end of the + * file, we need to show the number of + * events discarded ourselves, because + * there is no next event scheduled to + * be printed in the output. + */ + if (file_stream->parent.events_discarded) { + /* + * We need to check if we are in trace + * read or called from packet indexing. + * In this last case, the collection is + * not there, so we cannot print the + * timestamps. + */ + if ((&file_stream->parent)->stream_class->trace->collection) { + fflush(stdout); + fprintf(stderr, "[warning] Tracer discarded %d events at end of stream between [", + file_stream->parent.events_discarded); + ctf_print_timestamp(stderr, &file_stream->parent, + file_stream->parent.prev_timestamp); + fprintf(stderr, "] and ["); + ctf_print_timestamp(stderr, &file_stream->parent, + file_stream->parent.prev_timestamp_end); + fprintf(stderr, "]. You should consider increasing the buffer size.\n"); + fflush(stderr); + } + file_stream->parent.events_discarded = 0; + } pos->offset = EOF; return; } - index = &g_array_index(pos->packet_index, struct packet_index, + packet_index = &g_array_index(pos->packet_index, struct packet_index, pos->cur_index); - pos->mmap_offset = index->offset; + pos->mmap_offset = packet_index->offset; /* Lookup context/packet size in index */ - file_stream->parent.timestamp = index->timestamp_begin; - pos->content_size = index->content_size; - pos->packet_size = index->packet_size; - if (index->data_offset <= index->content_size) { + file_stream->parent.timestamp = packet_index->timestamp_begin; + pos->content_size = packet_index->content_size; + pos->packet_size = packet_index->packet_size; + if (packet_index->data_offset < packet_index->content_size) { pos->offset = 0; /* will read headers */ + } else if (packet_index->data_offset == packet_index->content_size) { + /* empty packet */ + pos->offset = packet_index->data_offset; + whence = SEEK_CUR; + goto read_next_packet; } else { pos->offset = EOF; return; @@ -426,7 +682,7 @@ void ctf_move_pos_slow(struct ctf_stream_pos *pos, size_t offset, int whence) pos->base = mmap(NULL, pos->packet_size / CHAR_BIT, pos->prot, pos->flags, pos->fd, pos->mmap_offset); if (pos->base == MAP_FAILED) { - fprintf(stdout, "[error] mmap error %s.\n", + fprintf(stderr, "[error] mmap error %s.\n", strerror(errno)); assert(0); } @@ -491,7 +747,7 @@ int check_version(unsigned int major, unsigned int minor) /* eventually return an error instead of warning */ warning: - fprintf(stdout, "[warning] Unsupported CTF specification version %u.%u. Trying anyway.\n", + fprintf(stderr, "[warning] Unsupported CTF specification version %u.%u. Trying anyway.\n", major, minor); return 0; } @@ -516,19 +772,19 @@ int ctf_open_trace_metadata_packet_read(struct ctf_trace *td, FILE *in, header.packet_size = GUINT32_SWAP_LE_BE(header.packet_size); } if (header.checksum) - fprintf(stdout, "[warning] checksum verification not supported yet.\n"); + fprintf(stderr, "[warning] checksum verification not supported yet.\n"); if (header.compression_scheme) { - fprintf(stdout, "[error] compression (%u) not supported yet.\n", + fprintf(stderr, "[error] compression (%u) not supported yet.\n", header.compression_scheme); return -EINVAL; } if (header.encryption_scheme) { - fprintf(stdout, "[error] encryption (%u) not supported yet.\n", + fprintf(stderr, "[error] encryption (%u) not supported yet.\n", header.encryption_scheme); return -EINVAL; } if (header.checksum_scheme) { - fprintf(stdout, "[error] checksum (%u) not supported yet.\n", + fprintf(stderr, "[error] checksum (%u) not supported yet.\n", header.checksum_scheme); return -EINVAL; } @@ -538,7 +794,7 @@ int ctf_open_trace_metadata_packet_read(struct ctf_trace *td, FILE *in, memcpy(td->uuid, header.uuid, sizeof(header.uuid)); CTF_TRACE_SET_FIELD(td, uuid); } else { - if (uuid_compare(header.uuid, td->uuid)) + if (babeltrace_uuid_compare(header.uuid, td->uuid)) return -EINVAL; } @@ -552,7 +808,7 @@ int ctf_open_trace_metadata_packet_read(struct ctf_trace *td, FILE *in, } if (babeltrace_debug) { buf[readlen] = '\0'; - fprintf(stdout, "[debug] metadata packet read: %s\n", + fprintf(stderr, "[debug] metadata packet read: %s\n", buf); } @@ -577,7 +833,7 @@ read_padding: toread = (header.packet_size - header.content_size) / CHAR_BIT; ret = fseek(in, toread, SEEK_CUR); if (ret < 0) { - fprintf(stdout, "[warning] Missing padding at end of file\n"); + fprintf(stderr, "[warning] Missing padding at end of file\n"); ret = 0; } return ret; @@ -597,10 +853,11 @@ int ctf_open_trace_metadata_stream_read(struct ctf_trace *td, FILE **fp, * because its size includes garbage at the end (after final * \0). This is the allocated size, not the actual string size. */ - out = open_memstream(buf, &size); - if (out == NULL) + out = babeltrace_open_memstream(buf, &size); + if (out == NULL) { + perror("Metadata open_memstream"); return -errno; - + } for (;;) { ret = ctf_open_trace_metadata_packet_read(td, in, out); if (ret) { @@ -611,15 +868,27 @@ int ctf_open_trace_metadata_stream_read(struct ctf_trace *td, FILE **fp, break; } } - fclose(out); /* flush the buffer */ + /* close to flush the buffer */ + ret = babeltrace_close_memstream(buf, &size, out); + if (ret < 0) { + perror("babeltrace_flush_memstream"); + fclose(in); + return -errno; + } fclose(in); /* open for reading */ - *fp = fmemopen(*buf, strlen(*buf), "rb"); + *fp = babeltrace_fmemopen(*buf, strlen(*buf), "rb"); + if (!*fp) { + perror("Metadata fmemopen"); + return -errno; + } return 0; } static -int ctf_open_trace_metadata_read(struct ctf_trace *td) +int ctf_open_trace_metadata_read(struct ctf_trace *td, + void (*packet_seek)(struct stream_pos *pos, size_t index, + int whence), FILE *metadata_fp) { struct ctf_scanner *scanner; struct ctf_file_stream *metadata_stream; @@ -628,22 +897,35 @@ int ctf_open_trace_metadata_read(struct ctf_trace *td) int ret = 0; metadata_stream = g_new0(struct ctf_file_stream, 1); - td->metadata = &metadata_stream->parent; - metadata_stream->pos.fd = openat(td->dirfd, "metadata", O_RDONLY); - if (metadata_stream->pos.fd < 0) { - fprintf(stdout, "Unable to open metadata.\n"); - return metadata_stream->pos.fd; + + if (packet_seek) { + metadata_stream->pos.packet_seek = packet_seek; + } else { + fprintf(stderr, "[error] packet_seek function undefined.\n"); + ret = -1; + goto end_stream; } - if (babeltrace_debug) - yydebug = 1; + if (metadata_fp) { + fp = metadata_fp; + } else { + td->metadata = &metadata_stream->parent; + metadata_stream->pos.fd = openat(td->dirfd, "metadata", O_RDONLY); + if (metadata_stream->pos.fd < 0) { + fprintf(stderr, "Unable to open metadata.\n"); + return metadata_stream->pos.fd; + } - fp = fdopen(metadata_stream->pos.fd, "r"); - if (!fp) { - fprintf(stdout, "[error] Unable to open metadata stream.\n"); - ret = -errno; - goto end_stream; + fp = fdopen(metadata_stream->pos.fd, "r"); + if (!fp) { + fprintf(stderr, "[error] Unable to open metadata stream.\n"); + perror("Metadata stream open"); + ret = -errno; + goto end_stream; + } } + if (babeltrace_debug) + yydebug = 1; if (packet_metadata(td, fp)) { ret = ctf_open_trace_metadata_stream_read(td, &fp, &buf); @@ -658,7 +940,7 @@ int ctf_open_trace_metadata_read(struct ctf_trace *td) /* Check text-only metadata header and version */ nr_items = fscanf(fp, "/* CTF %u.%u", &major, &minor); if (nr_items < 2) - fprintf(stdout, "[warning] Ill-shapen or missing \"/* CTF x.y\" header for text-only metadata.\n"); + fprintf(stderr, "[warning] Ill-shapen or missing \"/* CTF x.y\" header for text-only metadata.\n"); if (check_version(major, minor) < 0) { ret = -EINVAL; goto end_packet_read; @@ -668,33 +950,33 @@ int ctf_open_trace_metadata_read(struct ctf_trace *td) scanner = ctf_scanner_alloc(fp); if (!scanner) { - fprintf(stdout, "[error] Error allocating scanner\n"); + fprintf(stderr, "[error] Error allocating scanner\n"); ret = -ENOMEM; goto end_scanner_alloc; } ret = ctf_scanner_append_ast(scanner); if (ret) { - fprintf(stdout, "[error] Error creating AST\n"); + fprintf(stderr, "[error] Error creating AST\n"); goto end; } if (babeltrace_debug) { - ret = ctf_visitor_print_xml(stdout, 0, &scanner->ast->root); + ret = ctf_visitor_print_xml(stderr, 0, &scanner->ast->root); if (ret) { - fprintf(stdout, "[error] Error visiting AST for XML output\n"); + fprintf(stderr, "[error] Error visiting AST for XML output\n"); goto end; } } - ret = ctf_visitor_semantic_check(stdout, 0, &scanner->ast->root); + ret = ctf_visitor_semantic_check(stderr, 0, &scanner->ast->root); if (ret) { - fprintf(stdout, "[error] Error in CTF semantic validation %d\n", ret); + fprintf(stderr, "[error] Error in CTF semantic validation %d\n", ret); goto end; } - ret = ctf_visitor_construct_metadata(stdout, 0, &scanner->ast->root, + ret = ctf_visitor_construct_metadata(stderr, 0, &scanner->ast->root, td, td->byte_order); if (ret) { - fprintf(stdout, "[error] Error in CTF metadata constructor %d\n", ret); + fprintf(stderr, "[error] Error in CTF metadata constructor %d\n", ret); goto end; } end: @@ -711,11 +993,11 @@ end_stream: } static -struct ctf_stream_event *create_event_definitions(struct ctf_trace *td, - struct ctf_stream *stream, - struct ctf_event *event) +struct ctf_event_definition *create_event_definitions(struct ctf_trace *td, + struct ctf_stream_definition *stream, + struct ctf_event_declaration *event) { - struct ctf_stream_event *stream_event = g_new0(struct ctf_stream_event, 1); + struct ctf_event_definition *stream_event = g_new0(struct ctf_event_definition, 1); if (event->context_decl) { struct definition *definition = @@ -739,6 +1021,7 @@ struct ctf_stream_event *create_event_definitions(struct ctf_trace *td, struct definition_struct, p); stream->parent_def_scope = stream_event->event_fields->p.scope; } + stream_event->stream = stream; return stream_event; error: @@ -750,9 +1033,9 @@ error: } static -int create_stream_definitions(struct ctf_trace *td, struct ctf_stream *stream) +int create_stream_definitions(struct ctf_trace *td, struct ctf_stream_definition *stream) { - struct ctf_stream_class *stream_class; + struct ctf_stream_declaration *stream_class; int ret; int i; @@ -800,8 +1083,8 @@ int create_stream_definitions(struct ctf_trace *td, struct ctf_stream *stream) stream->events_by_id = g_ptr_array_new(); g_ptr_array_set_size(stream->events_by_id, stream_class->events_by_id->len); for (i = 0; i < stream->events_by_id->len; i++) { - struct ctf_event *event = g_ptr_array_index(stream_class->events_by_id, i); - struct ctf_stream_event *stream_event; + struct ctf_event_declaration *event = g_ptr_array_index(stream_class->events_by_id, i); + struct ctf_event_definition *stream_event; if (!event) continue; @@ -814,7 +1097,7 @@ int create_stream_definitions(struct ctf_trace *td, struct ctf_stream *stream) error_event: for (i = 0; i < stream->events_by_id->len; i++) { - struct ctf_stream_event *stream_event = g_ptr_array_index(stream->events_by_id, i); + struct ctf_event_definition *stream_event = g_ptr_array_index(stream->events_by_id, i); if (stream_event) g_free(stream_event); } @@ -834,7 +1117,7 @@ static int create_stream_packet_index(struct ctf_trace *td, struct ctf_file_stream *file_stream) { - struct ctf_stream_class *stream; + struct ctf_stream_declaration *stream; int len_index; struct ctf_stream_pos *pos; struct stat filestats; @@ -858,7 +1141,7 @@ int create_stream_packet_index(struct ctf_trace *td, /* unmap old base */ ret = munmap(pos->base, pos->packet_size / CHAR_BIT); if (ret) { - fprintf(stdout, "[error] Unable to unmap old base: %s.\n", + fprintf(stderr, "[error] Unable to unmap old base: %s.\n", strerror(errno)); return ret; } @@ -876,6 +1159,7 @@ int create_stream_packet_index(struct ctf_trace *td, packet_index.packet_size = 0; packet_index.timestamp_begin = 0; packet_index.timestamp_end = 0; + packet_index.events_discarded = 0; /* read and check header, set stream id (and check) */ if (file_stream->parent.trace_packet_header) { @@ -885,16 +1169,14 @@ int create_stream_packet_index(struct ctf_trace *td, return ret; len_index = struct_declaration_lookup_field_index(file_stream->parent.trace_packet_header->declaration, g_quark_from_static_string("magic")); if (len_index >= 0) { - struct definition_integer *defint; struct definition *field; + uint64_t magic; field = struct_definition_get_field_from_index(file_stream->parent.trace_packet_header, len_index); - assert(field->declaration->id == CTF_TYPE_INTEGER); - defint = container_of(field, struct definition_integer, p); - assert(defint->declaration->signedness == FALSE); - if (defint->value._unsigned != CTF_MAGIC) { - fprintf(stdout, "[error] Invalid magic number 0x%" PRIX64 " at packet %u (file offset %zd).\n", - defint->value._unsigned, + magic = get_unsigned_int(field); + if (magic != CTF_MAGIC) { + fprintf(stderr, "[error] Invalid magic number 0x%" PRIX64 " at packet %u (file offset %zd).\n", + magic, file_stream->pos.packet_index->len, (ssize_t) pos->mmap_offset); return -EINVAL; @@ -907,26 +1189,22 @@ int create_stream_packet_index(struct ctf_trace *td, struct definition_array *defarray; struct definition *field; uint64_t i; - uint8_t uuidval[UUID_LEN]; + uint8_t uuidval[BABELTRACE_UUID_LEN]; field = struct_definition_get_field_from_index(file_stream->parent.trace_packet_header, len_index); assert(field->declaration->id == CTF_TYPE_ARRAY); defarray = container_of(field, struct definition_array, p); - assert(array_len(defarray) == UUID_LEN); - assert(defarray->declaration->elem->id == CTF_TYPE_INTEGER); + assert(array_len(defarray) == BABELTRACE_UUID_LEN); - for (i = 0; i < UUID_LEN; i++) { + for (i = 0; i < BABELTRACE_UUID_LEN; i++) { struct definition *elem; - struct definition_integer *defint; elem = array_index(defarray, i); - assert(elem); - defint = container_of(elem, struct definition_integer, p); - uuidval[i] = defint->value._unsigned; + uuidval[i] = get_unsigned_int(elem); } - ret = uuid_compare(td->uuid, uuidval); + ret = babeltrace_uuid_compare(td->uuid, uuidval); if (ret) { - fprintf(stdout, "[error] Unique Universal Identifiers do not match.\n"); + fprintf(stderr, "[error] Unique Universal Identifiers do not match.\n"); return -EINVAL; } } @@ -934,30 +1212,26 @@ int create_stream_packet_index(struct ctf_trace *td, len_index = struct_declaration_lookup_field_index(file_stream->parent.trace_packet_header->declaration, g_quark_from_static_string("stream_id")); if (len_index >= 0) { - struct definition_integer *defint; struct definition *field; field = struct_definition_get_field_from_index(file_stream->parent.trace_packet_header, len_index); - assert(field->declaration->id == CTF_TYPE_INTEGER); - defint = container_of(field, struct definition_integer, p); - assert(defint->declaration->signedness == FALSE); - stream_id = defint->value._unsigned; + stream_id = get_unsigned_int(field); } } if (!first_packet && file_stream->parent.stream_id != stream_id) { - fprintf(stdout, "[error] Stream ID is changing within a stream.\n"); + fprintf(stderr, "[error] Stream ID is changing within a stream.\n"); return -EINVAL; } if (first_packet) { file_stream->parent.stream_id = stream_id; if (stream_id >= td->streams->len) { - fprintf(stdout, "[error] Stream %" PRIu64 " is not declared in metadata.\n", stream_id); + fprintf(stderr, "[error] Stream %" PRIu64 " is not declared in metadata.\n", stream_id); return -EINVAL; } stream = g_ptr_array_index(td->streams, stream_id); if (!stream) { - fprintf(stdout, "[error] Stream %" PRIu64 " is not declared in metadata.\n", stream_id); + fprintf(stderr, "[error] Stream %" PRIu64 " is not declared in metadata.\n", stream_id); return -EINVAL; } file_stream->parent.stream_class = stream; @@ -975,14 +1249,10 @@ int create_stream_packet_index(struct ctf_trace *td, /* read content size from header */ len_index = struct_declaration_lookup_field_index(file_stream->parent.stream_packet_context->declaration, g_quark_from_static_string("content_size")); if (len_index >= 0) { - struct definition_integer *defint; struct definition *field; field = struct_definition_get_field_from_index(file_stream->parent.stream_packet_context, len_index); - assert(field->declaration->id == CTF_TYPE_INTEGER); - defint = container_of(field, struct definition_integer, p); - assert(defint->declaration->signedness == FALSE); - packet_index.content_size = defint->value._unsigned; + packet_index.content_size = get_unsigned_int(field); } else { /* Use file size for packet size */ packet_index.content_size = filestats.st_size * CHAR_BIT; @@ -991,14 +1261,10 @@ int create_stream_packet_index(struct ctf_trace *td, /* read packet size from header */ len_index = struct_declaration_lookup_field_index(file_stream->parent.stream_packet_context->declaration, g_quark_from_static_string("packet_size")); if (len_index >= 0) { - struct definition_integer *defint; struct definition *field; field = struct_definition_get_field_from_index(file_stream->parent.stream_packet_context, len_index); - assert(field->declaration->id == CTF_TYPE_INTEGER); - defint = container_of(field, struct definition_integer, p); - assert(defint->declaration->signedness == FALSE); - packet_index.packet_size = defint->value._unsigned; + packet_index.packet_size = get_unsigned_int(field); } else { /* Use content size if non-zero, else file size */ packet_index.packet_size = packet_index.content_size ? : filestats.st_size * CHAR_BIT; @@ -1007,27 +1273,28 @@ int create_stream_packet_index(struct ctf_trace *td, /* read timestamp begin from header */ len_index = struct_declaration_lookup_field_index(file_stream->parent.stream_packet_context->declaration, g_quark_from_static_string("timestamp_begin")); if (len_index >= 0) { - struct definition_integer *defint; struct definition *field; field = struct_definition_get_field_from_index(file_stream->parent.stream_packet_context, len_index); - assert(field->declaration->id == CTF_TYPE_INTEGER); - defint = container_of(field, struct definition_integer, p); - assert(defint->declaration->signedness == FALSE); - packet_index.timestamp_begin = defint->value._unsigned; + packet_index.timestamp_begin = get_unsigned_int(field); } /* read timestamp end from header */ len_index = struct_declaration_lookup_field_index(file_stream->parent.stream_packet_context->declaration, g_quark_from_static_string("timestamp_end")); if (len_index >= 0) { - struct definition_integer *defint; struct definition *field; field = struct_definition_get_field_from_index(file_stream->parent.stream_packet_context, len_index); - assert(field->declaration->id == CTF_TYPE_INTEGER); - defint = container_of(field, struct definition_integer, p); - assert(defint->declaration->signedness == FALSE); - packet_index.timestamp_end = defint->value._unsigned; + packet_index.timestamp_end = get_unsigned_int(field); + } + + /* read events discarded from header */ + len_index = struct_declaration_lookup_field_index(file_stream->parent.stream_packet_context->declaration, g_quark_from_static_string("events_discarded")); + if (len_index >= 0) { + struct definition *field; + + field = struct_definition_get_field_from_index(file_stream->parent.stream_packet_context, len_index); + packet_index.events_discarded = get_unsigned_int(field); } } else { /* Use file size for packet size */ @@ -1038,14 +1305,14 @@ int create_stream_packet_index(struct ctf_trace *td, /* Validate content size and packet size values */ if (packet_index.content_size > packet_index.packet_size) { - fprintf(stdout, "[error] Content size (%zu bits) is larger than packet size (%zu bits).\n", + fprintf(stderr, "[error] Content size (%" PRIu64 " bits) is larger than packet size (%" PRIu64 " bits).\n", packet_index.content_size, packet_index.packet_size); return -EINVAL; } - if (packet_index.packet_size > (filestats.st_size - packet_index.offset) * CHAR_BIT) { - fprintf(stdout, "[error] Packet size (%zu bits) is larger than remaining file size (%zu bits).\n", - packet_index.content_size, (size_t) (filestats.st_size - packet_index.offset) * CHAR_BIT); + if (packet_index.packet_size > ((uint64_t)filestats.st_size - packet_index.offset) * CHAR_BIT) { + fprintf(stderr, "[error] Packet size (%" PRIu64 " bits) is larger than remaining file size (%" PRIu64 " bits).\n", + packet_index.content_size, ((uint64_t)filestats.st_size - packet_index.offset) * CHAR_BIT); return -EINVAL; } @@ -1059,13 +1326,13 @@ int create_stream_packet_index(struct ctf_trace *td, } /* Move pos back to beginning of file */ - ctf_move_pos_slow(pos, 0, SEEK_SET); /* position for write */ + ctf_packet_seek(&pos->parent, 0, SEEK_SET); /* position for write */ return 0; } static -int create_trace_definitions(struct ctf_trace *td, struct ctf_stream *stream) +int create_trace_definitions(struct ctf_trace *td, struct ctf_stream_definition *stream) { int ret; @@ -1093,19 +1360,36 @@ error: * description (metadata). */ static -int ctf_open_file_stream_read(struct ctf_trace *td, const char *path, int flags) +int ctf_open_file_stream_read(struct ctf_trace *td, const char *path, int flags, + void (*packet_seek)(struct stream_pos *pos, size_t index, + int whence)) { int ret; struct ctf_file_stream *file_stream; ret = openat(td->dirfd, path, flags); - if (ret < 0) + if (ret < 0) { + perror("File stream openat()"); goto error; + } file_stream = g_new0(struct ctf_file_stream, 1); + + if (packet_seek) { + file_stream->pos.packet_seek = packet_seek; + } else { + fprintf(stderr, "[error] packet_seek function undefined.\n"); + ret = -1; + goto error_def; + } + ctf_init_pos(&file_stream->pos, ret, flags); ret = create_trace_definitions(td, &file_stream->parent); if (ret) goto error_def; + /* + * For now, only a single slock is supported. + */ + file_stream->parent.current_clock = td->single_clock; ret = create_stream_packet_index(td, file_stream); if (ret) goto error_index; @@ -1126,7 +1410,10 @@ error: } static -int ctf_open_trace_read(struct ctf_trace *td, const char *path, int flags) +int ctf_open_trace_read(struct ctf_trace *td, + const char *path, int flags, + void (*packet_seek)(struct stream_pos *pos, size_t index, + int whence), FILE *metadata_fp) { int ret; struct dirent *dirent; @@ -1138,23 +1425,26 @@ int ctf_open_trace_read(struct ctf_trace *td, const char *path, int flags) /* Open trace directory */ td->dir = opendir(path); if (!td->dir) { - fprintf(stdout, "[error] Unable to open trace directory.\n"); + fprintf(stderr, "[error] Unable to open trace directory.\n"); ret = -ENOENT; goto error; } td->dirfd = open(path, 0); if (td->dirfd < 0) { - fprintf(stdout, "[error] Unable to open trace directory file descriptor.\n"); - ret = -ENOENT; + fprintf(stderr, "[error] Unable to open trace directory file descriptor.\n"); + perror("Trace directory open"); + ret = -errno; goto error_dirfd; } + strncpy(td->path, path, sizeof(td->path)); + td->path[sizeof(td->path) - 1] = '\0'; /* * Keep the metadata file separate. */ - ret = ctf_open_trace_metadata_read(td); + ret = ctf_open_trace_metadata_read(td, packet_seek, metadata_fp); if (ret) { goto error_metadata; } @@ -1173,7 +1463,7 @@ int ctf_open_trace_read(struct ctf_trace *td, const char *path, int flags) for (;;) { ret = readdir_r(td->dir, dirent, &diriter); if (ret) { - fprintf(stdout, "[error] Readdir error.\n"); + fprintf(stderr, "[error] Readdir error.\n"); goto readdir_error; } if (!diriter) @@ -1183,9 +1473,10 @@ int ctf_open_trace_read(struct ctf_trace *td, const char *path, int flags) || !strcmp(diriter->d_name, "..") || !strcmp(diriter->d_name, "metadata")) continue; - ret = ctf_open_file_stream_read(td, diriter->d_name, flags); + ret = ctf_open_file_stream_read(td, diriter->d_name, + flags, packet_seek); if (ret) { - fprintf(stdout, "[error] Open file stream error.\n"); + fprintf(stderr, "[error] Open file stream error.\n"); goto readdir_error; } } @@ -1204,28 +1495,36 @@ error: } static -struct trace_descriptor *ctf_open_trace(const char *path, int flags) +struct trace_descriptor *ctf_open_trace(const char *path, int flags, + void (*packet_seek)(struct stream_pos *pos, size_t index, + int whence), FILE *metadata_fp) { struct ctf_trace *td; int ret; + /* + * If packet_seek is NULL, we provide our default version. + */ + if (!packet_seek) + packet_seek = ctf_packet_seek; + td = g_new0(struct ctf_trace, 1); switch (flags & O_ACCMODE) { case O_RDONLY: if (!path) { - fprintf(stdout, "[error] Path missing for input CTF trace.\n"); + fprintf(stderr, "[error] Path missing for input CTF trace.\n"); goto error; } - ret = ctf_open_trace_read(td, path, flags); + ret = ctf_open_trace_read(td, path, flags, packet_seek, metadata_fp); if (ret) goto error; break; case O_RDWR: - fprintf(stdout, "[error] Opening CTF traces for output is not supported yet.\n"); + fprintf(stderr, "[error] Opening CTF traces for output is not supported yet.\n"); goto error; default: - fprintf(stdout, "[error] Incorrect open flags.\n"); + fprintf(stderr, "[error] Incorrect open flags.\n"); goto error; } @@ -1235,6 +1534,154 @@ error: return NULL; } + +void ctf_init_mmap_pos(struct ctf_stream_pos *pos, + struct mmap_stream *mmap_info) +{ + pos->mmap_offset = 0; + pos->packet_size = 0; + pos->content_size = 0; + pos->content_size_loc = NULL; + pos->fd = mmap_info->fd; + pos->base = 0; + pos->offset = 0; + pos->dummy = false; + pos->cur_index = 0; + pos->packet_index = NULL; + pos->prot = PROT_READ; + pos->flags = MAP_PRIVATE; + pos->parent.rw_table = read_dispatch_table; + pos->parent.event_cb = ctf_read_event; +} + +static +int prepare_mmap_stream_definition(struct ctf_trace *td, + struct ctf_file_stream *file_stream) +{ + struct ctf_stream_declaration *stream; + uint64_t stream_id = 0; + int ret; + + file_stream->parent.stream_id = stream_id; + if (stream_id >= td->streams->len) { + fprintf(stderr, "[error] Stream %" PRIu64 " is not declared " + "in metadata.\n", stream_id); + ret = -EINVAL; + goto end; + } + stream = g_ptr_array_index(td->streams, stream_id); + if (!stream) { + fprintf(stderr, "[error] Stream %" PRIu64 " is not declared " + "in metadata.\n", stream_id); + ret = -EINVAL; + goto end; + } + file_stream->parent.stream_class = stream; + ret = create_stream_definitions(td, &file_stream->parent); +end: + return ret; +} + +static +int ctf_open_mmap_stream_read(struct ctf_trace *td, + struct mmap_stream *mmap_info, + void (*packet_seek)(struct stream_pos *pos, size_t index, + int whence)) +{ + int ret; + struct ctf_file_stream *file_stream; + + file_stream = g_new0(struct ctf_file_stream, 1); + ctf_init_mmap_pos(&file_stream->pos, mmap_info); + + file_stream->pos.packet_seek = packet_seek; + + ret = create_trace_definitions(td, &file_stream->parent); + if (ret) { + goto error_def; + } + + ret = prepare_mmap_stream_definition(td, file_stream); + if (ret) + goto error_index; + + /* Add stream file to stream class */ + g_ptr_array_add(file_stream->parent.stream_class->streams, + &file_stream->parent); + return 0; + +error_index: + if (file_stream->parent.trace_packet_header) + definition_unref(&file_stream->parent.trace_packet_header->p); +error_def: + g_free(file_stream); + return ret; +} + +int ctf_open_mmap_trace_read(struct ctf_trace *td, + struct mmap_stream_list *mmap_list, + void (*packet_seek)(struct stream_pos *pos, size_t index, + int whence), + FILE *metadata_fp) +{ + int ret; + struct mmap_stream *mmap_info; + + ret = ctf_open_trace_metadata_read(td, ctf_packet_seek, metadata_fp); + if (ret) { + goto error; + } + + /* + * for each stream, try to open, check magic number, and get the + * stream ID to add to the right location in the stream array. + */ + bt_list_for_each_entry(mmap_info, &mmap_list->head, list) { + ret = ctf_open_mmap_stream_read(td, mmap_info, packet_seek); + if (ret) { + fprintf(stderr, "[error] Open file mmap stream error.\n"); + goto error; + } + } + + return 0; + +error: + return ret; +} + +static +struct trace_descriptor *ctf_open_mmap_trace( + struct mmap_stream_list *mmap_list, + void (*packet_seek)(struct stream_pos *pos, size_t index, + int whence), + FILE *metadata_fp) +{ + struct ctf_trace *td; + int ret; + + if (!metadata_fp) { + fprintf(stderr, "[error] No metadata file pointer associated, " + "required for mmap parsing\n"); + goto error; + } + if (!packet_seek) { + fprintf(stderr, "[error] packet_seek function undefined.\n"); + goto error; + } + td = g_new0(struct ctf_trace, 1); + ret = ctf_open_mmap_trace_read(td, mmap_list, packet_seek, metadata_fp); + if (ret) + goto error_free; + + return &td->parent; + +error_free: + g_free(td); +error: + return NULL; +} + static void ctf_close_file_stream(struct ctf_file_stream *file_stream) { @@ -1250,7 +1697,7 @@ void ctf_close_trace(struct trace_descriptor *tdp) if (td->streams) { for (i = 0; i < td->streams->len; i++) { - struct ctf_stream_class *stream; + struct ctf_stream_declaration *stream; int j; stream = g_ptr_array_index(td->streams, i); @@ -1265,10 +1712,40 @@ void ctf_close_trace(struct trace_descriptor *tdp) } g_ptr_array_free(td->streams, TRUE); } + + if (td->event_declarations) { + for (i = 0; i < td->event_declarations->len; i++) { + struct bt_ctf_event_decl *event; + + event = g_ptr_array_index(td->event_declarations, i); + g_free(event); + } + g_ptr_array_free(td->event_declarations, TRUE); + } closedir(td->dir); g_free(td); } +static +void ctf_set_context(struct trace_descriptor *descriptor, + struct bt_context *ctx) +{ + struct ctf_trace *td = container_of(descriptor, struct ctf_trace, + parent); + + td->ctx = ctx; +} + +static +void ctf_set_handle(struct trace_descriptor *descriptor, + struct bt_trace_handle *handle) +{ + struct ctf_trace *td = container_of(descriptor, struct ctf_trace, + parent); + + td->handle = handle; +} + void __attribute__((constructor)) ctf_init(void) { int ret;