X-Git-Url: http://git.efficios.com/?a=blobdiff_plain;f=formats%2Fctf%2Fctf.c;h=bdebaeb306d8eba78b2c6187dd0c1dc93c93d78c;hb=9ecfc3e6b596858f772e09a78832526ba808638a;hp=1e7fedd8d3319cae443e838c45a9e2f0e74a302e;hpb=b1a2f5806630289aa0b85edbb7f7c581cfa26178;p=babeltrace.git diff --git a/formats/ctf/ctf.c b/formats/ctf/ctf.c index 1e7fedd8..bdebaeb3 100644 --- a/formats/ctf/ctf.c +++ b/formats/ctf/ctf.c @@ -79,6 +79,162 @@ struct format ctf_format = { .close_trace = ctf_close_trace, }; +static +int ctf_read_event(struct stream_pos *ppos, struct ctf_stream *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_event *event_class; + uint64_t id = 0; + int len_index; + int ret; + + if (pos->offset == EOF) + return EOF; + + /* Read event header */ + if (stream_class->event_header) { + ret = generic_rw(ppos, &stream_class->event_header->p); + if (ret) + goto error; + /* lookup event id */ + len_index = struct_declaration_lookup_field_index(stream_class->event_header_decl, + g_quark_from_static_string("id")); + if (len_index >= 0) { + struct definition_integer *defint; + struct definition *field; + + field = struct_definition_get_field_from_index(stream_class->event_header, len_index); + assert(field->declaration->id == CTF_TYPE_INTEGER); + defint = container_of(field, struct definition_integer, p); + assert(defint->declaration->signedness == FALSE); + id = defint->value._unsigned; /* set id */ + } + + /* lookup timestamp */ + len_index = struct_declaration_lookup_field_index(stream_class->event_header_decl, + g_quark_from_static_string("timestamp")); + if (len_index >= 0) { + struct definition_integer *defint; + struct definition *field; + + field = struct_definition_get_field_from_index(stream_class->event_header, len_index); + assert(field->declaration->id == CTF_TYPE_INTEGER); + defint = container_of(field, struct definition_integer, p); + assert(defint->declaration->signedness == FALSE); + /* update timestamp */ + stream->timestamp = defint->value._unsigned; + } + + } + + /* Read stream-declared event context */ + if (stream_class->event_context) { + ret = generic_rw(ppos, &stream_class->event_context->p); + if (ret) + goto error; + } + + if (id >= stream_class->events_by_id->len) { + fprintf(stdout, "[error] Event id %" PRIu64 " is outside range.\n", id); + return -EINVAL; + } + event_class = g_ptr_array_index(stream_class->events_by_id, id); + if (!event_class) { + fprintf(stdout, "[error] Event id %" PRIu64 " is unknown.\n", id); + return -EINVAL; + } + + /* Read event-declared event context */ + if (event_class->context) { + ret = generic_rw(ppos, &event_class->context->p); + if (ret) + goto error; + } + + /* Read event payload */ + if (event_class->fields) { + ret = generic_rw(ppos, &event_class->fields->p); + if (ret) + goto error; + } + + 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"); + return ret; +} + +static +int ctf_write_event(struct stream_pos *pos, struct ctf_stream *stream) +{ + struct ctf_stream_class *stream_class = stream->stream_class; + struct ctf_event *event_class; + uint64_t id = 0; + int len_index; + int ret; + + /* print event header */ + if (stream_class->event_header) { + /* lookup event id */ + len_index = struct_declaration_lookup_field_index(stream_class->event_header_decl, + g_quark_from_static_string("id")); + if (len_index >= 0) { + struct definition_integer *defint; + struct definition *field; + + field = struct_definition_get_field_from_index(stream_class->event_header, len_index); + assert(field->declaration->id == CTF_TYPE_INTEGER); + defint = container_of(field, struct definition_integer, p); + assert(defint->declaration->signedness == FALSE); + id = defint->value._unsigned; /* set id */ + } + + ret = generic_rw(pos, &stream_class->event_header->p); + if (ret) + goto error; + } + + /* print stream-declared event context */ + if (stream_class->event_context) { + ret = generic_rw(pos, &stream_class->event_context->p); + if (ret) + goto error; + } + + if (id >= stream_class->events_by_id->len) { + fprintf(stdout, "[error] Event id %" PRIu64 " is outside range.\n", id); + return -EINVAL; + } + event_class = g_ptr_array_index(stream_class->events_by_id, id); + if (!event_class) { + fprintf(stdout, "[error] Event id %" PRIu64 " is unknown.\n", id); + return -EINVAL; + } + + /* print event-declared event context */ + if (event_class->context) { + ret = generic_rw(pos, &event_class->context->p); + if (ret) + goto error; + } + + /* Read and print event payload */ + if (event_class->fields) { + ret = generic_rw(pos, &event_class->fields->p); + if (ret) + goto error; + } + + 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"); + return ret; +} + void ctf_init_pos(struct ctf_stream_pos *pos, int fd, int open_flags) { pos->fd = fd; @@ -100,11 +256,13 @@ void ctf_init_pos(struct ctf_stream_pos *pos, int fd, int open_flags) pos->prot = PROT_READ; pos->flags = MAP_PRIVATE; pos->parent.rw_table = read_dispatch_table; + pos->parent.event_cb = ctf_read_event; break; case O_RDWR: pos->prot = PROT_WRITE; /* Write has priority */ pos->flags = MAP_SHARED; 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 */ break; @@ -284,7 +442,7 @@ static int create_stream_packet_index(struct ctf_trace *td, struct ctf_file_stream *file_stream) { - struct ctf_stream *stream; + struct ctf_stream_class *stream; int len_index; struct ctf_stream_pos *pos; struct stat filestats; @@ -405,7 +563,7 @@ int create_stream_packet_index(struct ctf_trace *td, fprintf(stdout, "[error] Stream %" PRIu64 " is not declared in metadata.\n", stream_id); return -EINVAL; } - file_stream->stream = stream; + file_stream->stream.stream_class = stream; } first_packet = 0; @@ -499,7 +657,7 @@ int ctf_open_file_stream_read(struct ctf_trace *td, const char *path, int flags) if (ret) goto error_index; /* Add stream file to stream class */ - g_ptr_array_add(file_stream->stream->files, file_stream); + g_ptr_array_add(file_stream->stream.stream_class->files, file_stream); return 0; error_index: @@ -535,8 +693,6 @@ int ctf_open_trace_read(struct ctf_trace *td, const char *path, int flags) goto error_dirfd; } - td->streams = g_ptr_array_new(); - /* * Keep the metadata file separate. */ @@ -636,7 +792,7 @@ void ctf_close_trace(struct trace_descriptor *tdp) if (td->streams) { for (i = 0; i < td->streams->len; i++) { - struct ctf_stream *stream; + struct ctf_stream_class *stream; int j; stream = g_ptr_array_index(td->streams, i); for (j = 0; j < stream->files->len; j++) {