X-Git-Url: http://git.efficios.com/?p=babeltrace.git;a=blobdiff_plain;f=formats%2Fctf%2Fir%2Fstream.c;fp=formats%2Fctf%2Fir%2Fstream.c;h=0000000000000000000000000000000000000000;hp=b4d234703e1bb27d7725bb7ab9530232e2847dc4;hb=dc3fffef7b84cc4af1a7c99828fd57a106cd2257;hpb=f3985ab106d89d8e764c1a8dd0c8bda09b755d10 diff --git a/formats/ctf/ir/stream.c b/formats/ctf/ir/stream.c deleted file mode 100644 index b4d23470..00000000 --- a/formats/ctf/ir/stream.c +++ /dev/null @@ -1,1222 +0,0 @@ -/* - * stream.c - * - * Babeltrace CTF IR - Stream - * - * Copyright 2013, 2014 Jérémie Galarneau - * - * Author: Jérémie Galarneau - * - * Permission is hereby granted, free of charge, to any person obtaining a copy - * of this software and associated documentation files (the "Software"), to deal - * in the Software without restriction, including without limitation the rights - * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell - * copies of the Software, and to permit persons to whom the Software is - * furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice shall be included in - * all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE - * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER - * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, - * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - */ - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -static -void bt_ctf_stream_destroy(struct bt_object *obj); -static -int try_set_structure_field_integer(struct bt_ctf_field *, char *, uint64_t); -static -int set_structure_field_integer(struct bt_ctf_field *, char *, uint64_t); - -static -int set_integer_field_value(struct bt_ctf_field* field, uint64_t value) -{ - int ret = 0; - struct bt_ctf_field_type *field_type = NULL; - - if (!field) { - ret = -1; - goto end; - } - - field_type = bt_ctf_field_get_type(field); - assert(field_type); - - if (bt_ctf_field_type_get_type_id(field_type) != - BT_CTF_TYPE_ID_INTEGER) { - /* Not an integer and the value is unset, error. */ - ret = -1; - goto end; - } - - if (bt_ctf_field_type_integer_get_signed(field_type)) { - ret = bt_ctf_field_signed_integer_set_value(field, (int64_t) value); - if (ret) { - /* Value is out of range, error. */ - goto end; - } - } else { - ret = bt_ctf_field_unsigned_integer_set_value(field, value); - if (ret) { - /* Value is out of range, error. */ - goto end; - } - } -end: - bt_put(field_type); - return ret; -} - -static -int set_packet_header_magic(struct bt_ctf_stream *stream) -{ - int ret = 0; - struct bt_ctf_field_type *magic_field_type = NULL; - struct bt_ctf_field *magic_field = bt_ctf_field_structure_get_field( - stream->packet_header, "magic"); - - if (!magic_field) { - /* No magic field found. Not an error, skip. */ - goto end; - } - - if (bt_ctf_field_is_set(magic_field)) { - /* Value already set. Not an error, skip. */ - goto end; - } - - magic_field_type = bt_ctf_field_get_type(magic_field); - assert(magic_field_type); - - if (bt_ctf_field_type_get_type_id(magic_field_type) != - BT_CTF_TYPE_ID_INTEGER) { - /* Magic field is not an integer. Not an error, skip. */ - goto end; - } - - if (bt_ctf_field_type_integer_get_size(magic_field_type) != 32) { - /* - * Magic field is not of the expected size. - * Not an error, skip. - */ - goto end; - } - - ret = bt_ctf_field_type_integer_get_signed(magic_field_type); - assert(ret >= 0); - if (ret) { - ret = bt_ctf_field_signed_integer_set_value(magic_field, - (int64_t) 0xC1FC1FC1); - } else { - ret = bt_ctf_field_unsigned_integer_set_value(magic_field, - (uint64_t) 0xC1FC1FC1); - } -end: - bt_put(magic_field); - bt_put(magic_field_type); - return ret; -} - -static -int set_packet_header_uuid(struct bt_ctf_stream *stream) -{ - int i, ret = 0; - struct bt_ctf_trace *trace = NULL; - struct bt_ctf_field_type *uuid_field_type = NULL; - struct bt_ctf_field_type *element_field_type = NULL; - struct bt_ctf_field *uuid_field = bt_ctf_field_structure_get_field( - stream->packet_header, "uuid"); - - if (!uuid_field) { - /* No uuid field found. Not an error, skip. */ - goto end; - } - - if (bt_ctf_field_is_set(uuid_field)) { - /* Value already set. Not an error, skip. */ - goto end; - } - - uuid_field_type = bt_ctf_field_get_type(uuid_field); - assert(uuid_field_type); - if (bt_ctf_field_type_get_type_id(uuid_field_type) != - BT_CTF_TYPE_ID_ARRAY) { - /* UUID field is not an array. Not an error, skip. */ - goto end; - } - - if (bt_ctf_field_type_array_get_length(uuid_field_type) != 16) { - /* - * UUID field is not of the expected size. - * Not an error, skip. - */ - goto end; - } - - element_field_type = bt_ctf_field_type_array_get_element_type( - uuid_field_type); - assert(element_field_type); - if (bt_ctf_field_type_get_type_id(element_field_type) != - BT_CTF_TYPE_ID_INTEGER) { - /* UUID array elements are not integers. Not an error, skip */ - goto end; - } - - trace = (struct bt_ctf_trace *) bt_object_get_parent(stream); - for (i = 0; i < 16; i++) { - struct bt_ctf_field *uuid_element = - bt_ctf_field_array_get_field(uuid_field, i); - - ret = bt_ctf_field_type_integer_get_signed(element_field_type); - assert(ret >= 0); - - if (ret) { - ret = bt_ctf_field_signed_integer_set_value( - uuid_element, (int64_t) trace->uuid[i]); - } else { - ret = bt_ctf_field_unsigned_integer_set_value( - uuid_element, - (uint64_t) trace->uuid[i]); - } - bt_put(uuid_element); - if (ret) { - goto end; - } - } - -end: - bt_put(uuid_field); - bt_put(uuid_field_type); - bt_put(element_field_type); - BT_PUT(trace); - return ret; -} -static -int set_packet_header_stream_id(struct bt_ctf_stream *stream) -{ - int ret = 0; - uint32_t stream_id; - struct bt_ctf_field_type *stream_id_field_type = NULL; - struct bt_ctf_field *stream_id_field = bt_ctf_field_structure_get_field( - stream->packet_header, "stream_id"); - - if (!stream_id_field) { - /* No stream_id field found. Not an error, skip. */ - goto end; - } - - if (bt_ctf_field_is_set(stream_id_field)) { - /* Value already set. Not an error, skip. */ - goto end; - } - - stream_id_field_type = bt_ctf_field_get_type(stream_id_field); - assert(stream_id_field_type); - if (bt_ctf_field_type_get_type_id(stream_id_field_type) != - BT_CTF_TYPE_ID_INTEGER) { - /* stream_id field is not an integer. Not an error, skip. */ - goto end; - } - - stream_id = stream->stream_class->id; - ret = bt_ctf_field_type_integer_get_signed(stream_id_field_type); - assert(ret >= 0); - if (ret) { - ret = bt_ctf_field_signed_integer_set_value(stream_id_field, - (int64_t) stream_id); - } else { - ret = bt_ctf_field_unsigned_integer_set_value(stream_id_field, - (uint64_t) stream_id); - } -end: - bt_put(stream_id_field); - bt_put(stream_id_field_type); - return ret; -} - -static -int set_packet_header(struct bt_ctf_stream *stream) -{ - int ret; - - ret = set_packet_header_magic(stream); - if (ret) { - goto end; - } - - ret = set_packet_header_uuid(stream); - if (ret) { - goto end; - } - - ret = set_packet_header_stream_id(stream); - if (ret) { - goto end; - } -end: - return ret; -} - -static -void release_event(struct bt_ctf_event *event) -{ - if (bt_object_get_ref_count(event)) { - /* - * The event is being orphaned, but it must guarantee the - * existence of its event class for the duration of its - * lifetime. - */ - bt_get(event->event_class); - BT_PUT(event->base.parent); - } else { - bt_object_release(event); - } -} - -static -int create_stream_file(struct bt_ctf_writer *writer, - struct bt_ctf_stream *stream) -{ - int fd; - GString *filename = g_string_new(stream->stream_class->name->str); - - if (stream->stream_class->name->len == 0) { - int64_t ret; - - ret = bt_ctf_stream_class_get_id(stream->stream_class); - if (ret < 0) { - fd = -1; - goto error; - } - - g_string_printf(filename, "stream_%" PRId64, ret); - } - - g_string_append_printf(filename, "_%" PRIu32, stream->id); - fd = openat(writer->trace_dir_fd, filename->str, - O_RDWR | O_CREAT | O_TRUNC, - S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP); -error: - g_string_free(filename, TRUE); - return fd; -} - -static -int set_stream_fd(struct bt_ctf_stream *stream, int fd) -{ - int ret = 0; - - if (stream->pos.fd != -1) { - ret = -1; - goto end; - } - - ctf_init_pos(&stream->pos, NULL, fd, O_RDWR); - stream->pos.fd = fd; -end: - return ret; -} - -struct bt_ctf_stream *bt_ctf_stream_create( - struct bt_ctf_stream_class *stream_class, - const char *name) -{ - int ret; - struct bt_ctf_stream *stream = NULL; - struct bt_ctf_trace *trace = NULL; - struct bt_ctf_writer *writer = NULL; - - if (!stream_class) { - goto error; - } - - trace = bt_ctf_stream_class_get_trace(stream_class); - if (!trace) { - goto error; - } - - stream = g_new0(struct bt_ctf_stream, 1); - if (!stream) { - goto error; - } - - bt_object_init(stream, bt_ctf_stream_destroy); - /* - * Acquire reference to parent since stream will become publicly - * reachable; it needs its parent to remain valid. - */ - bt_object_set_parent(stream, trace); - stream->id = stream_class->next_stream_id++; - stream->stream_class = stream_class; - stream->pos.fd = -1; - - if (name) { - stream->name = g_string_new(name); - if (!stream->name) { - goto error; - } - } - - if (trace->is_created_by_writer) { - int fd; - writer = (struct bt_ctf_writer *) - bt_object_get_parent(trace); - - assert(writer); - if (stream_class->packet_context_type) { - stream->packet_context = bt_ctf_field_create( - stream_class->packet_context_type); - if (!stream->packet_context) { - goto error; - } - - /* Initialize events_discarded */ - ret = try_set_structure_field_integer( - stream->packet_context, - "events_discarded", 0); - if (ret != 1) { - goto error; - } - } - - stream->events = g_ptr_array_new_with_free_func( - (GDestroyNotify) release_event); - if (!stream->events) { - goto error; - } - - /* A trace is not allowed to have a NULL packet header */ - assert(trace->packet_header_type); - stream->packet_header = - bt_ctf_field_create(trace->packet_header_type); - if (!stream->packet_header) { - goto error; - } - - /* - * Attempt to populate the default trace packet header fields - * (magic, uuid and stream_id). This will _not_ fail shall the - * fields not be found or be of an incompatible type; they will - * simply not be populated automatically. The user will have to - * make sure to set the trace packet header fields himself - * before flushing. - */ - ret = set_packet_header(stream); - if (ret) { - goto error; - } - - /* Create file associated with this stream */ - fd = create_stream_file(writer, stream); - if (fd < 0) { - goto error; - } - - ret = set_stream_fd(stream, fd); - if (ret) { - goto error; - } - - /* Freeze the writer */ - bt_ctf_writer_freeze(writer); - } else { - /* Non-writer stream indicated by a negative FD */ - ret = set_stream_fd(stream, -1); - if (ret) { - goto error; - } - } - - /* Add this stream to the trace's streams */ - g_ptr_array_add(trace->streams, stream); - - BT_PUT(trace); - BT_PUT(writer); - return stream; -error: - BT_PUT(stream); - BT_PUT(trace); - BT_PUT(writer); - return stream; -} - -struct bt_ctf_stream_class *bt_ctf_stream_get_class( - struct bt_ctf_stream *stream) -{ - struct bt_ctf_stream_class *stream_class = NULL; - - if (!stream) { - goto end; - } - - stream_class = stream->stream_class; - bt_get(stream_class); -end: - return stream_class; -} - -int bt_ctf_stream_get_discarded_events_count( - struct bt_ctf_stream *stream, uint64_t *count) -{ - int64_t ret = 0; - int field_signed; - struct bt_ctf_field *events_discarded_field = NULL; - struct bt_ctf_field_type *events_discarded_field_type = NULL; - - if (!stream || !count || !stream->packet_context || - stream->pos.fd < 0) { - ret = -1; - goto end; - } - - events_discarded_field = bt_ctf_field_structure_get_field( - stream->packet_context, "events_discarded"); - if (!events_discarded_field) { - ret = -1; - goto end; - } - - events_discarded_field_type = bt_ctf_field_get_type( - events_discarded_field); - if (!events_discarded_field_type) { - ret = -1; - goto end; - } - - field_signed = bt_ctf_field_type_integer_get_signed( - events_discarded_field_type); - if (field_signed < 0) { - ret = field_signed; - goto end; - } - - if (field_signed) { - int64_t signed_count; - - ret = bt_ctf_field_signed_integer_get_value( - events_discarded_field, &signed_count); - if (ret) { - goto end; - } - if (signed_count < 0) { - /* Invalid value */ - ret = -1; - goto end; - } - *count = (uint64_t) signed_count; - } else { - ret = bt_ctf_field_unsigned_integer_get_value( - events_discarded_field, count); - if (ret) { - goto end; - } - } -end: - bt_put(events_discarded_field); - bt_put(events_discarded_field_type); - return ret; -} - -void bt_ctf_stream_append_discarded_events(struct bt_ctf_stream *stream, - uint64_t event_count) -{ - int ret; - int field_signed; - uint64_t previous_count; - uint64_t new_count; - struct bt_ctf_field *events_discarded_field = NULL; - struct bt_ctf_field_type *events_discarded_field_type = NULL; - - if (!stream || !stream->packet_context || stream->pos.fd < 0) { - goto end; - } - - ret = bt_ctf_stream_get_discarded_events_count(stream, - &previous_count); - if (ret) { - goto end; - } - - events_discarded_field = bt_ctf_field_structure_get_field( - stream->packet_context, "events_discarded"); - if (!events_discarded_field) { - goto end; - } - - events_discarded_field_type = bt_ctf_field_get_type( - events_discarded_field); - if (!events_discarded_field_type) { - goto end; - } - - field_signed = bt_ctf_field_type_integer_get_signed( - events_discarded_field_type); - if (field_signed < 0) { - goto end; - } - - new_count = previous_count + event_count; - if (field_signed) { - ret = bt_ctf_field_signed_integer_set_value( - events_discarded_field, (int64_t) new_count); - if (ret) { - goto end; - } - } else { - ret = bt_ctf_field_unsigned_integer_set_value( - events_discarded_field, new_count); - if (ret) { - goto end; - } - } - -end: - bt_put(events_discarded_field); - bt_put(events_discarded_field_type); -} - -static int auto_populate_event_header(struct bt_ctf_stream *stream, - struct bt_ctf_event *event) -{ - int ret = 0; - struct bt_ctf_field *id_field = NULL, *timestamp_field = NULL; - struct bt_ctf_clock_class *mapped_clock_class = NULL; - - if (!event || event->frozen) { - ret = -1; - goto end; - } - - /* - * The condition to automatically set the ID are: - * - * 1. The event header field "id" exists and is an integer - * field. - * 2. The event header field "id" is NOT set. - */ - id_field = bt_ctf_field_structure_get_field(event->event_header, "id"); - if (id_field && !bt_ctf_field_is_set(id_field)) { - ret = set_integer_field_value(id_field, - (uint64_t) bt_ctf_event_class_get_id( - event->event_class)); - if (ret) { - goto end; - } - } - - /* - * The conditions to automatically set the timestamp are: - * - * 1. The event header field "timestamp" exists and is an - * integer field. - * 2. This stream's class has a registered clock (set with - * bt_ctf_stream_class_set_clock()). - * 3. The event header field "timestamp" has its type mapped to - * a clock class which is also the clock class of this - * stream's class's registered clock. - * 4. The event header field "timestamp" is NOT set. - */ - timestamp_field = bt_ctf_field_structure_get_field(event->event_header, - "timestamp"); - if (timestamp_field && !bt_ctf_field_is_set(timestamp_field) && - stream->stream_class->clock) { - struct bt_ctf_clock_class *stream_class_clock_class = - stream->stream_class->clock->clock_class; - struct bt_ctf_field_type *timestamp_field_type = - bt_ctf_field_get_type(timestamp_field); - - assert(timestamp_field_type); - mapped_clock_class = - bt_ctf_field_type_integer_get_mapped_clock_class( - timestamp_field_type); - BT_PUT(timestamp_field_type); - if (mapped_clock_class == stream_class_clock_class) { - uint64_t timestamp; - - ret = bt_ctf_clock_get_value( - stream->stream_class->clock, - ×tamp); - if (ret) { - goto end; - } - - ret = set_integer_field_value(timestamp_field, - timestamp); - if (ret) { - goto end; - } - } - } - -end: - bt_put(id_field); - bt_put(timestamp_field); - bt_put(mapped_clock_class); - return ret; -} - -int bt_ctf_stream_append_event(struct bt_ctf_stream *stream, - struct bt_ctf_event *event) -{ - int ret = 0; - - if (!stream || !event || stream->pos.fd < 0) { - ret = -1; - goto end; - } - - /* - * The event is not supposed to have a parent stream at this - * point. The only other way an event can have a parent stream - * is if it was assigned when setting a packet to the event, - * in which case the packet's stream is not a writer stream, - * and thus the user is trying to append an event which belongs - * to another stream. - */ - if (event->base.parent) { - ret = -1; - goto end; - } - - bt_object_set_parent(event, stream); - ret = auto_populate_event_header(stream, event); - if (ret) { - goto error; - } - - /* Make sure the various scopes of the event are set */ - ret = bt_ctf_event_validate(event); - if (ret) { - goto error; - } - - /* Save the new event and freeze it */ - bt_ctf_event_freeze(event); - g_ptr_array_add(stream->events, event); - - /* - * Event had to hold a reference to its event class as long as it wasn't - * part of the same trace hierarchy. From now on, the event and its - * class share the same lifetime guarantees and the reference is no - * longer needed. - */ - bt_put(event->event_class); - -end: - return ret; - -error: - /* - * Orphan the event; we were not successful in associating it to - * a stream. - */ - bt_object_set_parent(event, NULL); - - return ret; -} - -struct bt_ctf_field *bt_ctf_stream_get_packet_context( - struct bt_ctf_stream *stream) -{ - struct bt_ctf_field *packet_context = NULL; - - if (!stream || stream->pos.fd < 0) { - goto end; - } - - packet_context = stream->packet_context; - if (packet_context) { - bt_get(packet_context); - } -end: - return packet_context; -} - -int bt_ctf_stream_set_packet_context(struct bt_ctf_stream *stream, - struct bt_ctf_field *field) -{ - int ret = 0; - struct bt_ctf_field_type *field_type; - - if (!stream || stream->pos.fd < 0) { - ret = -1; - goto end; - } - - field_type = bt_ctf_field_get_type(field); - if (bt_ctf_field_type_compare(field_type, - stream->stream_class->packet_context_type)) { - ret = -1; - goto end; - } - - bt_put(field_type); - bt_put(stream->packet_context); - stream->packet_context = bt_get(field); -end: - return ret; -} - -struct bt_ctf_field *bt_ctf_stream_get_packet_header( - struct bt_ctf_stream *stream) -{ - struct bt_ctf_field *packet_header = NULL; - - if (!stream || stream->pos.fd < 0) { - goto end; - } - - packet_header = stream->packet_header; - if (packet_header) { - bt_get(packet_header); - } -end: - return packet_header; -} - -int bt_ctf_stream_set_packet_header(struct bt_ctf_stream *stream, - struct bt_ctf_field *field) -{ - int ret = 0; - struct bt_ctf_trace *trace = NULL; - struct bt_ctf_field_type *field_type = NULL; - - if (!stream || stream->pos.fd < 0) { - ret = -1; - goto end; - } - - trace = (struct bt_ctf_trace *) bt_object_get_parent(stream); - field_type = bt_ctf_field_get_type(field); - if (bt_ctf_field_type_compare(field_type, trace->packet_header_type)) { - ret = -1; - goto end; - } - - bt_put(stream->packet_header); - stream->packet_header = bt_get(field); -end: - BT_PUT(trace); - bt_put(field_type); - return ret; -} - -static -int get_event_header_timestamp(struct bt_ctf_field *event_header, uint64_t *timestamp) -{ - int ret = 0; - struct bt_ctf_field *timestamp_field = NULL; - struct bt_ctf_field_type *timestamp_field_type = NULL; - - timestamp_field = bt_ctf_field_structure_get_field(event_header, - "timestamp"); - if (!timestamp_field) { - ret = -1; - goto end; - } - - timestamp_field_type = bt_ctf_field_get_type(timestamp_field); - assert(timestamp_field_type); - if (bt_ctf_field_type_get_type_id(timestamp_field_type) != - BT_CTF_TYPE_ID_INTEGER) { - ret = -1; - goto end; - } - - if (bt_ctf_field_type_integer_get_signed(timestamp_field_type)) { - int64_t val; - - ret = bt_ctf_field_signed_integer_get_value(timestamp_field, - &val); - if (ret) { - goto end; - } - *timestamp = (uint64_t) val; - } else { - ret = bt_ctf_field_unsigned_integer_get_value(timestamp_field, - timestamp); - if (ret) { - goto end; - } - } -end: - bt_put(timestamp_field); - bt_put(timestamp_field_type); - return ret; -} - -static -void reset_structure_field(struct bt_ctf_field *structure, const char *name) -{ - struct bt_ctf_field *member; - - member = bt_ctf_field_structure_get_field(structure, name); - assert(member); - (void) bt_ctf_field_reset(member); - bt_put(member); -} - -int bt_ctf_stream_flush(struct bt_ctf_stream *stream) -{ - int ret = 0; - size_t i; - uint64_t timestamp_begin, timestamp_end; - struct bt_ctf_field *integer = NULL; - struct ctf_stream_pos packet_context_pos; - bool empty_packet; - uint64_t packet_size_bits; - struct { - bool timestamp_begin; - bool timestamp_end; - bool content_size; - bool packet_size; - } auto_set_fields = { 0 }; - - if (!stream || stream->pos.fd < 0) { - /* - * Stream does not have an associated fd. It is, - * therefore, not a stream being used to write events. - */ - ret = -1; - goto end; - } - - if (!stream->packet_context && stream->flushed_packet_count > 0) { - /* - * A stream without a packet context, and thus without - * content and packet size members, can't have more than - * one packet. - */ - ret = -1; - goto end; - } - - empty_packet = (stream->events->len == 0); - - /* mmap the next packet */ - ctf_packet_seek(&stream->pos.parent, 0, SEEK_CUR); - ret = bt_ctf_field_serialize(stream->packet_header, &stream->pos); - if (ret) { - goto end; - } - - if (stream->packet_context) { - /* Set the default context attributes if present and unset. */ - if (!empty_packet && !get_event_header_timestamp( - ((struct bt_ctf_event *) g_ptr_array_index( - stream->events, 0))->event_header, ×tamp_begin)) { - ret = try_set_structure_field_integer( - stream->packet_context, - "timestamp_begin", timestamp_begin); - if (ret < 0) { - goto end; - } - auto_set_fields.timestamp_begin = ret == 1; - } - - if (!empty_packet && !get_event_header_timestamp( - ((struct bt_ctf_event *) g_ptr_array_index( - stream->events, stream->events->len - 1))->event_header, - ×tamp_end)) { - - ret = try_set_structure_field_integer( - stream->packet_context, - "timestamp_end", timestamp_end); - if (ret < 0) { - goto end; - } - auto_set_fields.timestamp_end = ret == 1; - } - ret = try_set_structure_field_integer(stream->packet_context, - "content_size", UINT64_MAX); - if (ret < 0) { - goto end; - } - auto_set_fields.content_size = ret == 1; - - ret = try_set_structure_field_integer(stream->packet_context, - "packet_size", UINT64_MAX); - if (ret < 0) { - goto end; - } - auto_set_fields.packet_size = ret == 1; - - /* Write packet context */ - memcpy(&packet_context_pos, &stream->pos, - sizeof(struct ctf_stream_pos)); - ret = bt_ctf_field_serialize(stream->packet_context, - &stream->pos); - if (ret) { - goto end; - } - } - - for (i = 0; i < stream->events->len; i++) { - struct bt_ctf_event *event = g_ptr_array_index( - stream->events, i); - - /* Write event header */ - ret = bt_ctf_field_serialize(event->event_header, - &stream->pos); - if (ret) { - goto end; - } - - /* Write stream event context */ - if (event->stream_event_context) { - ret = bt_ctf_field_serialize( - event->stream_event_context, &stream->pos); - if (ret) { - goto end; - } - } - - /* Write event content */ - ret = bt_ctf_event_serialize(event, &stream->pos); - if (ret) { - goto end; - } - } - - /* Rounded-up in case content_size is not byte-aligned. */ - packet_size_bits = (stream->pos.offset + (CHAR_BIT - 1)) & - ~(CHAR_BIT - 1); - stream->pos.packet_size = packet_size_bits; - - if (stream->packet_context) { - /* - * Update the packet total size and content size and overwrite - * the packet context. - * Copy base_mma as the packet may have been remapped (e.g. when - * a packet is resized). - */ - packet_context_pos.base_mma = stream->pos.base_mma; - if (auto_set_fields.content_size) { - ret = set_structure_field_integer( - stream->packet_context, - "content_size", stream->pos.offset); - if (ret < 0) { - goto end; - } - } - - if (auto_set_fields.packet_size) { - ret = set_structure_field_integer(stream->packet_context, - "packet_size", packet_size_bits); - if (ret < 0) { - goto end; - } - } - - ret = bt_ctf_field_serialize(stream->packet_context, - &packet_context_pos); - if (ret) { - goto end; - } - } - - g_ptr_array_set_size(stream->events, 0); - stream->flushed_packet_count++; - stream->size += packet_size_bits / CHAR_BIT; -end: - /* Reset automatically-set fields. */ - if (auto_set_fields.timestamp_begin) { - reset_structure_field(stream->packet_context, - "timestamp_begin"); - } - if (auto_set_fields.timestamp_end) { - reset_structure_field(stream->packet_context, - "timestamp_end"); - } - if (auto_set_fields.packet_size) { - reset_structure_field(stream->packet_context, - "packet_size"); - } - if (auto_set_fields.content_size) { - reset_structure_field(stream->packet_context, - "content_size"); - } - bt_put(integer); - - if (ret < 0) { - /* - * We failed to write the packet. Its size is therefore set to 0 - * to ensure the next mapping is done in the same place rather - * than advancing by "stream->pos.packet_size", which would - * leave a corrupted packet in the trace. - */ - stream->pos.packet_size = 0; - } - return ret; -} - -void bt_ctf_stream_get(struct bt_ctf_stream *stream) -{ - bt_get(stream); -} - -void bt_ctf_stream_put(struct bt_ctf_stream *stream) -{ - bt_put(stream); -} - -static -void bt_ctf_stream_destroy(struct bt_object *obj) -{ - struct bt_ctf_stream *stream; - - stream = container_of(obj, struct bt_ctf_stream, base); - ctf_fini_pos(&stream->pos); - if (stream->pos.fd >= 0) { - int ret; - - /* - * Truncate the file's size to the minimum required to fit the - * last packet as we might have grown it too much on the last - * mmap. - */ - do { - ret = ftruncate(stream->pos.fd, stream->size); - } while (ret == -1 && errno == EINTR); - if (ret) { - perror("ftruncate"); - } - - if (close(stream->pos.fd)) { - perror("close"); - } - } - - if (stream->events) { - g_ptr_array_free(stream->events, TRUE); - } - - if (stream->name) { - g_string_free(stream->name, TRUE); - } - - bt_put(stream->packet_header); - bt_put(stream->packet_context); - g_free(stream); -} - -static -int _set_structure_field_integer(struct bt_ctf_field *structure, char *name, - uint64_t value, bool force) -{ - int ret = 0; - struct bt_ctf_field_type *field_type = NULL; - struct bt_ctf_field *integer = - bt_ctf_field_structure_get_field(structure, name); - - if (!structure || !name) { - ret = -1; - goto end; - } - - if (!integer) { - /* Field not found, not an error. */ - goto end; - } - - /* Make sure the payload has not already been set. */ - if (!force && bt_ctf_field_is_set(integer)) { - /* Payload already set, not an error */ - goto end; - } - - field_type = bt_ctf_field_get_type(integer); - assert(field_type); - if (bt_ctf_field_type_get_type_id(field_type) != BT_CTF_TYPE_ID_INTEGER) { - /* - * The user most likely meant for us to populate this field - * automatically. However, we can only do this if the field - * is an integer. Return an error. - */ - ret = -1; - goto end; - } - - if (bt_ctf_field_type_integer_get_signed(field_type)) { - ret = bt_ctf_field_signed_integer_set_value(integer, - (int64_t) value); - } else { - ret = bt_ctf_field_unsigned_integer_set_value(integer, value); - } - ret = !ret ? 1 : ret; -end: - bt_put(integer); - bt_put(field_type); - return ret; -} - -static -int set_structure_field_integer(struct bt_ctf_field *structure, char *name, - uint64_t value) -{ - return _set_structure_field_integer(structure, name, value, true); -} - -/* - * Returns the following codes: - * 1 if the field was found and set, - * 0 if nothing was done (field not found, or was already set), - * <0 if an error was encoutered - */ -static -int try_set_structure_field_integer(struct bt_ctf_field *structure, char *name, - uint64_t value) -{ - return _set_structure_field_integer(structure, name, value, false); -} - -const char *bt_ctf_stream_get_name(struct bt_ctf_stream *stream) -{ - const char *name = NULL; - - if (!stream) { - goto end; - } - - name = stream->name ? stream->name->str : NULL; - -end: - return name; -} - -int bt_ctf_stream_is_writer(struct bt_ctf_stream *stream) -{ - int ret = -1; - - if (!stream) { - goto end; - } - - ret = (stream->pos.fd >= 0); - -end: - return ret; -}