--- /dev/null
+/*
+ * SPDX-License-Identifier: MIT
+ *
+ * Copyright (c) 2015-2018 EfficiOS Inc. and Linux Foundation
+ * Copyright (c) 2015-2018 Philippe Proulx <pproulx@efficios.com>
+ *
+ * Babeltrace - CTF message iterator
+ */
+
+#define BT_COMP_LOG_SELF_COMP (msg_it->self_comp)
+#define BT_LOG_OUTPUT_LEVEL (msg_it->log_level)
+#define BT_LOG_TAG "PLUGIN/CTF/MSG-ITER"
+#include "logging/comp-logging.h"
+
+#include <stdint.h>
+#include <inttypes.h>
+#include <stdio.h>
+#include <stddef.h>
+#include <stdbool.h>
+#include "common/assert.h"
+#include <string.h>
+#include <babeltrace2/babeltrace.h>
+#include "common/common.h"
+#include <glib.h>
+#include <stdlib.h>
+
+#include "msg-iter.hpp"
+#include "../bfcr/bfcr.hpp"
+
+struct ctf_msg_iter;
+
+/* A visit stack entry */
+struct stack_entry {
+ /*
+ * Current base field, one of:
+ *
+ * * string
+ * * structure
+ * * array
+ * * sequence
+ * * variant
+ *
+ * Field is borrowed.
+ */
+ bt_field *base;
+
+ /* Index of next field to set */
+ size_t index;
+};
+
+struct ctf_msg_iter;
+
+/* Visit stack */
+struct stack {
+ struct ctf_msg_iter *msg_it;
+
+ /* Entries (struct stack_entry) */
+ GArray *entries;
+
+ /* Number of active entries */
+ size_t size;
+};
+
+/* State */
+enum state {
+ STATE_INIT,
+ STATE_SWITCH_PACKET,
+ STATE_DSCOPE_TRACE_PACKET_HEADER_BEGIN,
+ STATE_DSCOPE_TRACE_PACKET_HEADER_CONTINUE,
+ STATE_AFTER_TRACE_PACKET_HEADER,
+ STATE_DSCOPE_STREAM_PACKET_CONTEXT_BEGIN,
+ STATE_DSCOPE_STREAM_PACKET_CONTEXT_CONTINUE,
+ STATE_AFTER_STREAM_PACKET_CONTEXT,
+ STATE_EMIT_MSG_STREAM_BEGINNING,
+ STATE_CHECK_EMIT_MSG_DISCARDED_EVENTS,
+ STATE_CHECK_EMIT_MSG_DISCARDED_PACKETS,
+ STATE_EMIT_MSG_DISCARDED_EVENTS,
+ STATE_EMIT_MSG_DISCARDED_PACKETS,
+ STATE_EMIT_MSG_PACKET_BEGINNING,
+ STATE_DSCOPE_EVENT_HEADER_BEGIN,
+ STATE_DSCOPE_EVENT_HEADER_CONTINUE,
+ STATE_AFTER_EVENT_HEADER,
+ STATE_DSCOPE_EVENT_COMMON_CONTEXT_BEGIN,
+ STATE_DSCOPE_EVENT_COMMON_CONTEXT_CONTINUE,
+ STATE_DSCOPE_EVENT_SPEC_CONTEXT_BEGIN,
+ STATE_DSCOPE_EVENT_SPEC_CONTEXT_CONTINUE,
+ STATE_DSCOPE_EVENT_PAYLOAD_BEGIN,
+ STATE_DSCOPE_EVENT_PAYLOAD_CONTINUE,
+ STATE_EMIT_MSG_EVENT,
+ STATE_EMIT_QUEUED_MSG_EVENT,
+ STATE_SKIP_PACKET_PADDING,
+ STATE_EMIT_MSG_PACKET_END_MULTI,
+ STATE_EMIT_MSG_PACKET_END_SINGLE,
+ STATE_EMIT_QUEUED_MSG_PACKET_END,
+ STATE_CHECK_EMIT_MSG_STREAM_END,
+ STATE_EMIT_MSG_STREAM_END,
+ STATE_DONE,
+};
+
+struct end_of_packet_snapshots {
+ uint64_t discarded_events;
+ uint64_t packets;
+ uint64_t beginning_clock;
+ uint64_t end_clock;
+};
+
+/* CTF message iterator */
+struct ctf_msg_iter {
+ /* Visit stack */
+ struct stack *stack;
+
+ /* Current message iterator to create messages (weak) */
+ bt_self_message_iterator *self_msg_iter;
+
+ /*
+ * True if library objects are unavailable during the decoding and
+ * should not be created/used.
+ */
+ bool dry_run;
+
+ /*
+ * Current dynamic scope field pointer.
+ *
+ * This is set by read_dscope_begin_state() and contains the
+ * value of one of the pointers in `dscopes` below.
+ */
+ bt_field *cur_dscope_field;
+
+ /*
+ * True if we're done filling a string field from a text
+ * array/sequence payload.
+ */
+ bool done_filling_string;
+
+ /* Trace and classes */
+ /* True to set IR fields */
+ bool set_ir_fields;
+
+ struct {
+ struct ctf_trace_class *tc;
+ struct ctf_stream_class *sc;
+ struct ctf_event_class *ec;
+ } meta;
+
+ /* Current packet (NULL if not created yet) */
+ bt_packet *packet;
+
+ /* Current stream (NULL if not set yet) */
+ bt_stream *stream;
+
+ /* Current event (NULL if not created yet) */
+ bt_event *event;
+
+ /* Current event message (NULL if not created yet) */
+ bt_message *event_msg;
+
+ /*
+ * True if we need to emit a packet beginning message before we emit
+ * the next event message or the packet end message.
+ */
+ bool emit_delayed_packet_beginning_msg;
+
+ /*
+ * True if this is the first packet we are reading, and therefore if we
+ * should emit a stream beginning message.
+ */
+ bool emit_stream_beginning_message;
+
+ /*
+ * True if we need to emit a stream end message at the end of the
+ * current stream. A live stream may never receive any data and thus
+ * never send a stream beginning message which removes the need to emit
+ * a stream end message.
+ */
+ bool emit_stream_end_message;
+
+ /* Database of current dynamic scopes */
+ struct {
+ bt_field *stream_packet_context;
+ bt_field *event_common_context;
+ bt_field *event_spec_context;
+ bt_field *event_payload;
+ } dscopes;
+
+ /* Current state */
+ enum state state;
+
+ /* Current medium buffer data */
+ struct {
+ /* Last address provided by medium */
+ const uint8_t *addr;
+
+ /* Buffer size provided by medium (bytes) */
+ size_t sz;
+
+ /* Offset within whole packet of addr (bits) */
+ size_t packet_offset;
+
+ /* Current position from addr (bits) */
+ size_t at;
+
+ /* Position of the last event header from addr (bits) */
+ size_t last_eh_at;
+ } buf;
+
+ /* Binary type reader */
+ struct bt_bfcr *bfcr;
+
+ /* Current medium data */
+ struct {
+ struct ctf_msg_iter_medium_ops medops;
+ size_t max_request_sz;
+ void *data;
+ } medium;
+
+ /* Current packet size (bits) (-1 if unknown) */
+ int64_t cur_exp_packet_total_size;
+
+ /* Current content size (bits) (-1 if unknown) */
+ int64_t cur_exp_packet_content_size;
+
+ /* Current stream class ID */
+ int64_t cur_stream_class_id;
+
+ /* Current event class ID */
+ int64_t cur_event_class_id;
+
+ /* Current data stream ID */
+ int64_t cur_data_stream_id;
+
+ /*
+ * Offset, in the underlying media, of the current packet's
+ * start (-1 if unknown).
+ */
+ off_t cur_packet_offset;
+
+ /* Default clock's current value */
+ uint64_t default_clock_snapshot;
+
+ /* End of current packet snapshots */
+ struct end_of_packet_snapshots snapshots;
+
+ /* End of previous packet snapshots */
+ struct end_of_packet_snapshots prev_packet_snapshots;
+
+ /* Stored values (for sequence lengths, variant tags) */
+ GArray *stored_values;
+
+ /* Iterator's current log level */
+ bt_logging_level log_level;
+
+ /* Iterator's owning self component, or `NULL` if none (query) */
+ bt_self_component *self_comp;
+};
+
+static inline
+const char *state_string(enum state state)
+{
+ switch (state) {
+ case STATE_INIT:
+ return "INIT";
+ case STATE_SWITCH_PACKET:
+ return "SWITCH_PACKET";
+ case STATE_DSCOPE_TRACE_PACKET_HEADER_BEGIN:
+ return "DSCOPE_TRACE_PACKET_HEADER_BEGIN";
+ case STATE_DSCOPE_TRACE_PACKET_HEADER_CONTINUE:
+ return "DSCOPE_TRACE_PACKET_HEADER_CONTINUE";
+ case STATE_AFTER_TRACE_PACKET_HEADER:
+ return "AFTER_TRACE_PACKET_HEADER";
+ case STATE_DSCOPE_STREAM_PACKET_CONTEXT_BEGIN:
+ return "DSCOPE_STREAM_PACKET_CONTEXT_BEGIN";
+ case STATE_DSCOPE_STREAM_PACKET_CONTEXT_CONTINUE:
+ return "DSCOPE_STREAM_PACKET_CONTEXT_CONTINUE";
+ case STATE_AFTER_STREAM_PACKET_CONTEXT:
+ return "AFTER_STREAM_PACKET_CONTEXT";
+ case STATE_EMIT_MSG_STREAM_BEGINNING:
+ return "EMIT_MSG_STREAM_BEGINNING";
+ case STATE_CHECK_EMIT_MSG_DISCARDED_EVENTS:
+ return "CHECK_EMIT_MSG_DISCARDED_EVENTS";
+ case STATE_CHECK_EMIT_MSG_DISCARDED_PACKETS:
+ return "CHECK_EMIT_MSG_DISCARDED_PACKETS";
+ case STATE_EMIT_MSG_PACKET_BEGINNING:
+ return "EMIT_MSG_PACKET_BEGINNING";
+ case STATE_EMIT_MSG_DISCARDED_EVENTS:
+ return "EMIT_MSG_DISCARDED_EVENTS";
+ case STATE_EMIT_MSG_DISCARDED_PACKETS:
+ return "EMIT_MSG_DISCARDED_PACKETS";
+ case STATE_DSCOPE_EVENT_HEADER_BEGIN:
+ return "DSCOPE_EVENT_HEADER_BEGIN";
+ case STATE_DSCOPE_EVENT_HEADER_CONTINUE:
+ return "DSCOPE_EVENT_HEADER_CONTINUE";
+ case STATE_AFTER_EVENT_HEADER:
+ return "AFTER_EVENT_HEADER";
+ case STATE_DSCOPE_EVENT_COMMON_CONTEXT_BEGIN:
+ return "DSCOPE_EVENT_COMMON_CONTEXT_BEGIN";
+ case STATE_DSCOPE_EVENT_COMMON_CONTEXT_CONTINUE:
+ return "DSCOPE_EVENT_COMMON_CONTEXT_CONTINUE";
+ case STATE_DSCOPE_EVENT_SPEC_CONTEXT_BEGIN:
+ return "DSCOPE_EVENT_SPEC_CONTEXT_BEGIN";
+ case STATE_DSCOPE_EVENT_SPEC_CONTEXT_CONTINUE:
+ return "DSCOPE_EVENT_SPEC_CONTEXT_CONTINUE";
+ case STATE_DSCOPE_EVENT_PAYLOAD_BEGIN:
+ return "DSCOPE_EVENT_PAYLOAD_BEGIN";
+ case STATE_DSCOPE_EVENT_PAYLOAD_CONTINUE:
+ return "DSCOPE_EVENT_PAYLOAD_CONTINUE";
+ case STATE_EMIT_MSG_EVENT:
+ return "EMIT_MSG_EVENT";
+ case STATE_EMIT_QUEUED_MSG_EVENT:
+ return "EMIT_QUEUED_MSG_EVENT";
+ case STATE_SKIP_PACKET_PADDING:
+ return "SKIP_PACKET_PADDING";
+ case STATE_EMIT_MSG_PACKET_END_MULTI:
+ return "EMIT_MSG_PACKET_END_MULTI";
+ case STATE_EMIT_MSG_PACKET_END_SINGLE:
+ return "EMIT_MSG_PACKET_END_SINGLE";
+ case STATE_EMIT_QUEUED_MSG_PACKET_END:
+ return "EMIT_QUEUED_MSG_PACKET_END";
+ case STATE_CHECK_EMIT_MSG_STREAM_END:
+ return "CHECK_EMIT_MSG_STREAM_END";
+ case STATE_EMIT_MSG_STREAM_END:
+ return "EMIT_MSG_STREAM_END";
+ case STATE_DONE:
+ return "DONE";
+ }
+
+ bt_common_abort();
+}
+
+static
+struct stack *stack_new(struct ctf_msg_iter *msg_it)
+{
+ bt_self_component *self_comp = msg_it->self_comp;
+ struct stack *stack = NULL;
+
+ stack = g_new0(struct stack, 1);
+ if (!stack) {
+ BT_COMP_LOGE_APPEND_CAUSE(self_comp,
+ "Failed to allocate one stack.");
+ goto error;
+ }
+
+ stack->msg_it = msg_it;
+ stack->entries = g_array_new(FALSE, TRUE, sizeof(struct stack_entry));
+ if (!stack->entries) {
+ BT_COMP_LOGE_APPEND_CAUSE(self_comp,
+ "Failed to allocate a GArray.");
+ goto error;
+ }
+
+ BT_COMP_LOGD("Created stack: msg-it-addr=%p, stack-addr=%p", msg_it, stack);
+ goto end;
+
+error:
+ g_free(stack);
+ stack = NULL;
+
+end:
+ return stack;
+}
+
+static
+void stack_destroy(struct stack *stack)
+{
+ struct ctf_msg_iter *msg_it;
+
+ BT_ASSERT_DBG(stack);
+ msg_it = stack->msg_it;
+ BT_COMP_LOGD("Destroying stack: addr=%p", stack);
+
+ if (stack->entries) {
+ g_array_free(stack->entries, TRUE);
+ }
+
+ g_free(stack);
+}
+
+static
+void stack_push(struct stack *stack, bt_field *base)
+{
+ struct stack_entry *entry;
+ struct ctf_msg_iter *msg_it;
+
+ BT_ASSERT_DBG(stack);
+ msg_it = stack->msg_it;
+ BT_ASSERT_DBG(base);
+ BT_COMP_LOGT("Pushing base field on stack: stack-addr=%p, "
+ "stack-size-before=%zu, stack-size-after=%zu",
+ stack, stack->size, stack->size + 1);
+
+ if (stack->entries->len == stack->size) {
+ g_array_set_size(stack->entries, stack->size + 1);
+ }
+
+ entry = &g_array_index(stack->entries, struct stack_entry, stack->size);
+ entry->base = base;
+ entry->index = 0;
+ stack->size++;
+}
+
+static inline
+unsigned int stack_size(struct stack *stack)
+{
+ BT_ASSERT_DBG(stack);
+ return stack->size;
+}
+
+static
+void stack_pop(struct stack *stack)
+{
+ struct ctf_msg_iter *msg_it;
+
+ BT_ASSERT_DBG(stack);
+ BT_ASSERT_DBG(stack_size(stack));
+ msg_it = stack->msg_it;
+ BT_COMP_LOGT("Popping from stack: "
+ "stack-addr=%p, stack-size-before=%zu, stack-size-after=%zu",
+ stack, stack->size, stack->size - 1);
+ stack->size--;
+}
+
+static inline
+struct stack_entry *stack_top(struct stack *stack)
+{
+ BT_ASSERT_DBG(stack);
+ BT_ASSERT_DBG(stack_size(stack));
+ return &g_array_index(stack->entries, struct stack_entry,
+ stack->size - 1);
+}
+
+static inline
+bool stack_empty(struct stack *stack)
+{
+ return stack_size(stack) == 0;
+}
+
+static
+void stack_clear(struct stack *stack)
+{
+ BT_ASSERT_DBG(stack);
+ stack->size = 0;
+}
+
+static inline
+enum ctf_msg_iter_status msg_iter_status_from_m_status(
+ enum ctf_msg_iter_medium_status m_status)
+{
+ /* They are the same */
+ return (ctf_msg_iter_status) m_status;
+}
+
+static inline
+size_t buf_size_bits(struct ctf_msg_iter *msg_it)
+{
+ return msg_it->buf.sz * 8;
+}
+
+static inline
+size_t buf_available_bits(struct ctf_msg_iter *msg_it)
+{
+ return buf_size_bits(msg_it) - msg_it->buf.at;
+}
+
+static inline
+size_t packet_at(struct ctf_msg_iter *msg_it)
+{
+ return msg_it->buf.packet_offset + msg_it->buf.at;
+}
+
+static inline
+void buf_consume_bits(struct ctf_msg_iter *msg_it, size_t incr)
+{
+ BT_COMP_LOGT("Advancing cursor: msg-it-addr=%p, cur-before=%zu, cur-after=%zu",
+ msg_it, msg_it->buf.at, msg_it->buf.at + incr);
+ msg_it->buf.at += incr;
+}
+
+static
+enum ctf_msg_iter_status request_medium_bytes(
+ struct ctf_msg_iter *msg_it)
+{
+ bt_self_component *self_comp = msg_it->self_comp;
+ uint8_t *buffer_addr = NULL;
+ size_t buffer_sz = 0;
+ enum ctf_msg_iter_medium_status m_status;
+
+ BT_COMP_LOGD("Calling user function (request bytes): msg-it-addr=%p, "
+ "request-size=%zu", msg_it, msg_it->medium.max_request_sz);
+ m_status = msg_it->medium.medops.request_bytes(
+ msg_it->medium.max_request_sz, &buffer_addr,
+ &buffer_sz, msg_it->medium.data);
+ BT_COMP_LOGD("User function returned: status=%s, buf-addr=%p, buf-size=%zu",
+ ctf_msg_iter_medium_status_string(m_status),
+ buffer_addr, buffer_sz);
+ if (m_status == CTF_MSG_ITER_MEDIUM_STATUS_OK) {
+ BT_ASSERT(buffer_sz != 0);
+
+ /* New packet offset is old one + old size (in bits) */
+ msg_it->buf.packet_offset += buf_size_bits(msg_it);
+
+ /* Restart at the beginning of the new medium buffer */
+ msg_it->buf.at = 0;
+ msg_it->buf.last_eh_at = SIZE_MAX;
+
+ /* New medium buffer size */
+ msg_it->buf.sz = buffer_sz;
+
+ /* New medium buffer address */
+ msg_it->buf.addr = buffer_addr;
+
+ BT_COMP_LOGD("User function returned new bytes: "
+ "packet-offset=%zu, cur=%zu, size=%zu, addr=%p",
+ msg_it->buf.packet_offset, msg_it->buf.at,
+ msg_it->buf.sz, msg_it->buf.addr);
+ BT_COMP_LOGT_MEM(buffer_addr, buffer_sz, "Returned bytes at %p:",
+ buffer_addr);
+ } else if (m_status == CTF_MSG_ITER_MEDIUM_STATUS_EOF) {
+ /*
+ * User returned end of stream: validate that we're not
+ * in the middle of a packet header, packet context, or
+ * event.
+ */
+ if (msg_it->cur_exp_packet_total_size >= 0) {
+ if (packet_at(msg_it) ==
+ msg_it->cur_exp_packet_total_size) {
+ goto end;
+ }
+ } else {
+ if (packet_at(msg_it) == 0) {
+ goto end;
+ }
+
+ if (msg_it->buf.last_eh_at != SIZE_MAX &&
+ msg_it->buf.at == msg_it->buf.last_eh_at) {
+ goto end;
+ }
+ }
+
+ /* All other states are invalid */
+ BT_COMP_LOGE_APPEND_CAUSE(self_comp,
+ "User function returned %s, but message iterator is in an unexpected state: "
+ "state=%s, cur-packet-size=%" PRId64 ", cur=%zu, "
+ "packet-cur=%zu, last-eh-at=%zu",
+ ctf_msg_iter_medium_status_string(m_status),
+ state_string(msg_it->state),
+ msg_it->cur_exp_packet_total_size,
+ msg_it->buf.at, packet_at(msg_it),
+ msg_it->buf.last_eh_at);
+ m_status = CTF_MSG_ITER_MEDIUM_STATUS_ERROR;
+ } else if (m_status < 0) {
+ BT_COMP_LOGE_APPEND_CAUSE(self_comp, "User function failed: "
+ "status=%s", ctf_msg_iter_medium_status_string(m_status));
+ }
+
+end:
+ return msg_iter_status_from_m_status(m_status);
+}
+
+static inline
+enum ctf_msg_iter_status buf_ensure_available_bits(
+ struct ctf_msg_iter *msg_it)
+{
+ enum ctf_msg_iter_status status = CTF_MSG_ITER_STATUS_OK;
+
+ if (G_UNLIKELY(buf_available_bits(msg_it) == 0)) {
+ /*
+ * This _cannot_ return CTF_MSG_ITER_STATUS_OK
+ * _and_ no bits.
+ */
+ status = request_medium_bytes(msg_it);
+ }
+
+ return status;
+}
+
+static
+enum ctf_msg_iter_status read_dscope_begin_state(
+ struct ctf_msg_iter *msg_it,
+ struct ctf_field_class *dscope_fc,
+ enum state done_state, enum state continue_state,
+ bt_field *dscope_field)
+{
+ enum ctf_msg_iter_status status = CTF_MSG_ITER_STATUS_OK;
+ bt_self_component *self_comp = msg_it->self_comp;
+ enum bt_bfcr_status bfcr_status;
+ size_t consumed_bits;
+
+ msg_it->cur_dscope_field = dscope_field;
+ BT_COMP_LOGT("Starting BFCR: msg-it-addr=%p, bfcr-addr=%p, fc-addr=%p",
+ msg_it, msg_it->bfcr, dscope_fc);
+ consumed_bits = bt_bfcr_start(msg_it->bfcr, dscope_fc,
+ msg_it->buf.addr, msg_it->buf.at, packet_at(msg_it),
+ msg_it->buf.sz, &bfcr_status);
+ BT_COMP_LOGT("BFCR consumed bits: size=%zu", consumed_bits);
+
+ switch (bfcr_status) {
+ case BT_BFCR_STATUS_OK:
+ /* Field class was read completely */
+ BT_COMP_LOGT_STR("Field was completely decoded.");
+ msg_it->state = done_state;
+ break;
+ case BT_BFCR_STATUS_EOF:
+ BT_COMP_LOGT_STR("BFCR needs more data to decode field completely.");
+ msg_it->state = continue_state;
+ break;
+ default:
+ BT_COMP_LOGE_APPEND_CAUSE(self_comp,
+ "BFCR failed to start: msg-it-addr=%p, bfcr-addr=%p, "
+ "status=%s", msg_it, msg_it->bfcr,
+ bt_bfcr_status_string(bfcr_status));
+ status = CTF_MSG_ITER_STATUS_ERROR;
+ goto end;
+ }
+
+ /* Consume bits now since we know we're not in an error state */
+ buf_consume_bits(msg_it, consumed_bits);
+
+end:
+ return status;
+}
+
+static
+enum ctf_msg_iter_status read_dscope_continue_state(
+ struct ctf_msg_iter *msg_it, enum state done_state)
+{
+ enum ctf_msg_iter_status status = CTF_MSG_ITER_STATUS_OK;
+ bt_self_component *self_comp = msg_it->self_comp;
+ enum bt_bfcr_status bfcr_status;
+ size_t consumed_bits;
+
+ BT_COMP_LOGT("Continuing BFCR: msg-it-addr=%p, bfcr-addr=%p",
+ msg_it, msg_it->bfcr);
+
+ status = buf_ensure_available_bits(msg_it);
+ if (status != CTF_MSG_ITER_STATUS_OK) {
+ if (status < 0) {
+ BT_COMP_LOGE_APPEND_CAUSE(self_comp,
+ "Cannot ensure that buffer has at least one byte: "
+ "msg-addr=%p, status=%s",
+ msg_it, ctf_msg_iter_status_string(status));
+ } else {
+ BT_COMP_LOGT("Cannot ensure that buffer has at least one byte: "
+ "msg-addr=%p, status=%s",
+ msg_it, ctf_msg_iter_status_string(status));
+ }
+
+ goto end;
+ }
+
+ consumed_bits = bt_bfcr_continue(msg_it->bfcr, msg_it->buf.addr,
+ msg_it->buf.sz, &bfcr_status);
+ BT_COMP_LOGT("BFCR consumed bits: size=%zu", consumed_bits);
+
+ switch (bfcr_status) {
+ case BT_BFCR_STATUS_OK:
+ /* Type was read completely. */
+ BT_COMP_LOGT_STR("Field was completely decoded.");
+ msg_it->state = done_state;
+ break;
+ case BT_BFCR_STATUS_EOF:
+ /* Stay in this continue state. */
+ BT_COMP_LOGT_STR("BFCR needs more data to decode field completely.");
+ break;
+ default:
+ BT_COMP_LOGE_APPEND_CAUSE(self_comp,
+ "BFCR failed to continue: msg-it-addr=%p, bfcr-addr=%p, "
+ "status=%s", msg_it, msg_it->bfcr,
+ bt_bfcr_status_string(bfcr_status));
+ status = CTF_MSG_ITER_STATUS_ERROR;
+ goto end;
+ }
+
+ /* Consume bits now since we know we're not in an error state. */
+ buf_consume_bits(msg_it, consumed_bits);
+end:
+ return status;
+}
+
+static
+void release_event_dscopes(struct ctf_msg_iter *msg_it)
+{
+ msg_it->dscopes.event_common_context = NULL;
+ msg_it->dscopes.event_spec_context = NULL;
+ msg_it->dscopes.event_payload = NULL;
+}
+
+static
+void release_all_dscopes(struct ctf_msg_iter *msg_it)
+{
+ msg_it->dscopes.stream_packet_context = NULL;
+
+ release_event_dscopes(msg_it);
+}
+
+static
+enum ctf_msg_iter_status switch_packet_state(struct ctf_msg_iter *msg_it)
+{
+ enum ctf_msg_iter_status status;
+ bt_self_component *self_comp = msg_it->self_comp;
+
+ /*
+ * We don't put the stream class here because we need to make
+ * sure that all the packets processed by the same message
+ * iterator refer to the same stream class (the first one).
+ */
+ BT_ASSERT(msg_it);
+
+ if (msg_it->cur_exp_packet_total_size != -1) {
+ msg_it->cur_packet_offset += msg_it->cur_exp_packet_total_size;
+ }
+
+ BT_COMP_LOGD("Switching packet: msg-it-addr=%p, cur=%zu, "
+ "packet-offset=%" PRId64, msg_it, msg_it->buf.at,
+ msg_it->cur_packet_offset);
+ stack_clear(msg_it->stack);
+ msg_it->meta.ec = NULL;
+ BT_PACKET_PUT_REF_AND_RESET(msg_it->packet);
+ BT_MESSAGE_PUT_REF_AND_RESET(msg_it->event_msg);
+ release_all_dscopes(msg_it);
+ msg_it->cur_dscope_field = NULL;
+
+ if (msg_it->medium.medops.switch_packet) {
+ enum ctf_msg_iter_medium_status medium_status;
+
+ medium_status = msg_it->medium.medops.switch_packet(msg_it->medium.data);
+ if (medium_status == CTF_MSG_ITER_MEDIUM_STATUS_EOF) {
+ /* No more packets. */
+ msg_it->state = STATE_CHECK_EMIT_MSG_STREAM_END;
+ status = CTF_MSG_ITER_STATUS_OK;
+ goto end;
+ } else if (medium_status != CTF_MSG_ITER_MEDIUM_STATUS_OK) {
+ status = msg_iter_status_from_m_status(medium_status);
+ goto end;
+ }
+
+ /*
+ * After the packet switch, the medium might want to give us a
+ * different buffer for the new packet.
+ */
+ status = request_medium_bytes(msg_it);
+ if (status != CTF_MSG_ITER_STATUS_OK) {
+ goto end;
+ }
+ }
+
+ /*
+ * Adjust current buffer so that addr points to the beginning of the new
+ * packet.
+ */
+ if (msg_it->buf.addr) {
+ size_t consumed_bytes = (size_t) (msg_it->buf.at / CHAR_BIT);
+
+ /* Packets are assumed to start on a byte frontier. */
+ if (msg_it->buf.at % CHAR_BIT) {
+ BT_COMP_LOGE_APPEND_CAUSE(self_comp,
+ "Cannot switch packet: current position is not a multiple of 8: "
+ "msg-it-addr=%p, cur=%zu", msg_it, msg_it->buf.at);
+ status = CTF_MSG_ITER_STATUS_ERROR;
+ goto end;
+ }
+
+ msg_it->buf.addr += consumed_bytes;
+ msg_it->buf.sz -= consumed_bytes;
+ msg_it->buf.at = 0;
+ msg_it->buf.packet_offset = 0;
+ BT_COMP_LOGD("Adjusted buffer: addr=%p, size=%zu",
+ msg_it->buf.addr, msg_it->buf.sz);
+ }
+
+ msg_it->cur_exp_packet_content_size = -1;
+ msg_it->cur_exp_packet_total_size = -1;
+ msg_it->cur_stream_class_id = -1;
+ msg_it->cur_event_class_id = -1;
+ msg_it->cur_data_stream_id = -1;
+ msg_it->prev_packet_snapshots = msg_it->snapshots;
+ msg_it->snapshots.discarded_events = UINT64_C(-1);
+ msg_it->snapshots.packets = UINT64_C(-1);
+ msg_it->snapshots.beginning_clock = UINT64_C(-1);
+ msg_it->snapshots.end_clock = UINT64_C(-1);
+ msg_it->state = STATE_DSCOPE_TRACE_PACKET_HEADER_BEGIN;
+
+ status = CTF_MSG_ITER_STATUS_OK;
+end:
+ return status;
+}
+
+static
+enum ctf_msg_iter_status read_packet_header_begin_state(
+ struct ctf_msg_iter *msg_it)
+{
+ struct ctf_field_class *packet_header_fc = NULL;
+ bt_self_component *self_comp = msg_it->self_comp;
+ enum ctf_msg_iter_status status = CTF_MSG_ITER_STATUS_OK;
+
+ /*
+ * Make sure at least one bit is available for this packet. An
+ * empty packet is impossible. If we reach the end of the medium
+ * at this point, then it's considered the end of the stream.
+ */
+ status = buf_ensure_available_bits(msg_it);
+ switch (status) {
+ case CTF_MSG_ITER_STATUS_OK:
+ break;
+ case CTF_MSG_ITER_STATUS_EOF:
+ status = CTF_MSG_ITER_STATUS_OK;
+ msg_it->state = STATE_CHECK_EMIT_MSG_STREAM_END;
+ goto end;
+ default:
+ goto end;
+ }
+
+ /* Packet header class is common to the whole trace class. */
+ packet_header_fc = msg_it->meta.tc->packet_header_fc;
+ if (!packet_header_fc) {
+ msg_it->state = STATE_AFTER_TRACE_PACKET_HEADER;
+ goto end;
+ }
+
+ msg_it->cur_stream_class_id = -1;
+ msg_it->cur_event_class_id = -1;
+ msg_it->cur_data_stream_id = -1;
+ BT_COMP_LOGD("Decoding packet header field: "
+ "msg-it-addr=%p, trace-class-addr=%p, fc-addr=%p",
+ msg_it, msg_it->meta.tc, packet_header_fc);
+ status = read_dscope_begin_state(msg_it, packet_header_fc,
+ STATE_AFTER_TRACE_PACKET_HEADER,
+ STATE_DSCOPE_TRACE_PACKET_HEADER_CONTINUE, NULL);
+ if (status < 0) {
+ BT_COMP_LOGE_APPEND_CAUSE(self_comp,
+ "Cannot decode packet header field: "
+ "msg-it-addr=%p, trace-class-addr=%p, "
+ "fc-addr=%p",
+ msg_it, msg_it->meta.tc, packet_header_fc);
+ }
+
+end:
+ return status;
+}
+
+static
+enum ctf_msg_iter_status read_packet_header_continue_state(
+ struct ctf_msg_iter *msg_it)
+{
+ return read_dscope_continue_state(msg_it,
+ STATE_AFTER_TRACE_PACKET_HEADER);
+}
+
+static inline
+enum ctf_msg_iter_status set_current_stream_class(struct ctf_msg_iter *msg_it)
+{
+ enum ctf_msg_iter_status status = CTF_MSG_ITER_STATUS_OK;
+ bt_self_component *self_comp = msg_it->self_comp;
+ struct ctf_stream_class *new_stream_class = NULL;
+
+ if (msg_it->cur_stream_class_id == -1) {
+ /*
+ * No current stream class ID field, therefore only one
+ * stream class.
+ */
+ if (msg_it->meta.tc->stream_classes->len != 1) {
+ BT_COMP_LOGE_APPEND_CAUSE(self_comp,
+ "Need exactly one stream class since there's "
+ "no stream class ID field: "
+ "msg-it-addr=%p", msg_it);
+ status = CTF_MSG_ITER_STATUS_ERROR;
+ goto end;
+ }
+
+ new_stream_class = (ctf_stream_class *) msg_it->meta.tc->stream_classes->pdata[0];
+ msg_it->cur_stream_class_id = new_stream_class->id;
+ }
+
+ new_stream_class = ctf_trace_class_borrow_stream_class_by_id(
+ msg_it->meta.tc, msg_it->cur_stream_class_id);
+ if (!new_stream_class) {
+ BT_COMP_LOGE_APPEND_CAUSE(self_comp,
+ "No stream class with ID of stream class ID to use in trace class: "
+ "msg-it-addr=%p, stream-class-id=%" PRIu64 ", "
+ "trace-class-addr=%p",
+ msg_it, msg_it->cur_stream_class_id, msg_it->meta.tc);
+ status = CTF_MSG_ITER_STATUS_ERROR;
+ goto end;
+ }
+
+ if (msg_it->meta.sc) {
+ if (new_stream_class != msg_it->meta.sc) {
+ BT_COMP_LOGE_APPEND_CAUSE(self_comp,
+ "Two packets refer to two different stream classes within the same packet sequence: "
+ "msg-it-addr=%p, prev-stream-class-addr=%p, "
+ "prev-stream-class-id=%" PRId64 ", "
+ "next-stream-class-addr=%p, "
+ "next-stream-class-id=%" PRId64 ", "
+ "trace-addr=%p",
+ msg_it, msg_it->meta.sc,
+ msg_it->meta.sc->id,
+ new_stream_class,
+ new_stream_class->id,
+ msg_it->meta.tc);
+ status = CTF_MSG_ITER_STATUS_ERROR;
+ goto end;
+ }
+ } else {
+ msg_it->meta.sc = new_stream_class;
+ }
+
+ BT_COMP_LOGD("Set current stream class: "
+ "msg-it-addr=%p, stream-class-addr=%p, "
+ "stream-class-id=%" PRId64,
+ msg_it, msg_it->meta.sc, msg_it->meta.sc->id);
+
+end:
+ return status;
+}
+
+static inline
+enum ctf_msg_iter_status set_current_stream(struct ctf_msg_iter *msg_it)
+{
+ enum ctf_msg_iter_status status = CTF_MSG_ITER_STATUS_OK;
+ bt_self_component *self_comp = msg_it->self_comp;
+ bt_stream *stream = NULL;
+
+ BT_COMP_LOGD("Calling user function (get stream): msg-it-addr=%p, "
+ "stream-class-addr=%p, stream-class-id=%" PRId64,
+ msg_it, msg_it->meta.sc,
+ msg_it->meta.sc->id);
+ stream = msg_it->medium.medops.borrow_stream(
+ msg_it->meta.sc->ir_sc, msg_it->cur_data_stream_id,
+ msg_it->medium.data);
+ bt_stream_get_ref(stream);
+ BT_COMP_LOGD("User function returned: stream-addr=%p", stream);
+ if (!stream) {
+ BT_COMP_LOGE_APPEND_CAUSE(self_comp,
+ "User function failed to return a stream object for the given stream class.");
+ status = CTF_MSG_ITER_STATUS_ERROR;
+ goto end;
+ }
+
+ if (msg_it->stream && stream != msg_it->stream) {
+ BT_COMP_LOGE_APPEND_CAUSE(self_comp,
+ "User function returned a different stream than the previous one for the same sequence of packets.");
+ status = CTF_MSG_ITER_STATUS_ERROR;
+ goto end;
+ }
+
+ BT_STREAM_MOVE_REF(msg_it->stream, stream);
+
+end:
+ bt_stream_put_ref(stream);
+ return status;
+}
+
+static inline
+enum ctf_msg_iter_status set_current_packet(struct ctf_msg_iter *msg_it)
+{
+ enum ctf_msg_iter_status status = CTF_MSG_ITER_STATUS_OK;
+ bt_self_component *self_comp = msg_it->self_comp;
+ bt_packet *packet = NULL;
+
+ BT_COMP_LOGD("Creating packet from stream: "
+ "msg-it-addr=%p, stream-addr=%p, "
+ "stream-class-addr=%p, "
+ "stream-class-id=%" PRId64,
+ msg_it, msg_it->stream, msg_it->meta.sc,
+ msg_it->meta.sc->id);
+
+ /* Create packet */
+ BT_ASSERT(msg_it->stream);
+ packet = bt_packet_create(msg_it->stream);
+ if (!packet) {
+ BT_COMP_LOGE_APPEND_CAUSE(self_comp,
+ "Cannot create packet from stream: "
+ "msg-it-addr=%p, stream-addr=%p, "
+ "stream-class-addr=%p, "
+ "stream-class-id=%" PRId64,
+ msg_it, msg_it->stream, msg_it->meta.sc,
+ msg_it->meta.sc->id);
+ goto error;
+ }
+
+ goto end;
+
+error:
+ BT_PACKET_PUT_REF_AND_RESET(packet);
+ status = CTF_MSG_ITER_STATUS_ERROR;
+
+end:
+ BT_PACKET_MOVE_REF(msg_it->packet, packet);
+ return status;
+}
+
+static
+enum ctf_msg_iter_status after_packet_header_state(
+ struct ctf_msg_iter *msg_it)
+{
+ enum ctf_msg_iter_status status;
+
+ status = set_current_stream_class(msg_it);
+ if (status != CTF_MSG_ITER_STATUS_OK) {
+ goto end;
+ }
+
+ if (!msg_it->dry_run) {
+ status = set_current_stream(msg_it);
+ if (status != CTF_MSG_ITER_STATUS_OK) {
+ goto end;
+ }
+
+ status = set_current_packet(msg_it);
+ if (status != CTF_MSG_ITER_STATUS_OK) {
+ goto end;
+ }
+ }
+
+ msg_it->state = STATE_DSCOPE_STREAM_PACKET_CONTEXT_BEGIN;
+
+ status = CTF_MSG_ITER_STATUS_OK;
+
+end:
+ return status;
+}
+
+static
+enum ctf_msg_iter_status read_packet_context_begin_state(
+ struct ctf_msg_iter *msg_it)
+{
+ enum ctf_msg_iter_status status = CTF_MSG_ITER_STATUS_OK;
+ bt_self_component *self_comp = msg_it->self_comp;
+ struct ctf_field_class *packet_context_fc;
+
+ BT_ASSERT(msg_it->meta.sc);
+ packet_context_fc = msg_it->meta.sc->packet_context_fc;
+ if (!packet_context_fc) {
+ BT_COMP_LOGD("No packet packet context field class in stream class: continuing: "
+ "msg-it-addr=%p, stream-class-addr=%p, "
+ "stream-class-id=%" PRId64,
+ msg_it, msg_it->meta.sc,
+ msg_it->meta.sc->id);
+ msg_it->state = STATE_AFTER_STREAM_PACKET_CONTEXT;
+ goto end;
+ }
+
+ if (packet_context_fc->in_ir && !msg_it->dry_run) {
+ BT_ASSERT(!msg_it->dscopes.stream_packet_context);
+ BT_ASSERT(msg_it->packet);
+ msg_it->dscopes.stream_packet_context =
+ bt_packet_borrow_context_field(msg_it->packet);
+ BT_ASSERT(msg_it->dscopes.stream_packet_context);
+ }
+
+ BT_COMP_LOGD("Decoding packet context field: "
+ "msg-it-addr=%p, stream-class-addr=%p, "
+ "stream-class-id=%" PRId64 ", fc-addr=%p",
+ msg_it, msg_it->meta.sc,
+ msg_it->meta.sc->id, packet_context_fc);
+ status = read_dscope_begin_state(msg_it, packet_context_fc,
+ STATE_AFTER_STREAM_PACKET_CONTEXT,
+ STATE_DSCOPE_STREAM_PACKET_CONTEXT_CONTINUE,
+ msg_it->dscopes.stream_packet_context);
+ if (status < 0) {
+ BT_COMP_LOGE_APPEND_CAUSE(self_comp,
+ "Cannot decode packet context field: "
+ "msg-it-addr=%p, stream-class-addr=%p, "
+ "stream-class-id=%" PRId64 ", fc-addr=%p",
+ msg_it, msg_it->meta.sc,
+ msg_it->meta.sc->id,
+ packet_context_fc);
+ }
+
+end:
+ return status;
+}
+
+static
+enum ctf_msg_iter_status read_packet_context_continue_state(
+ struct ctf_msg_iter *msg_it)
+{
+ return read_dscope_continue_state(msg_it,
+ STATE_AFTER_STREAM_PACKET_CONTEXT);
+}
+
+static
+enum ctf_msg_iter_status set_current_packet_content_sizes(
+ struct ctf_msg_iter *msg_it)
+{
+ enum ctf_msg_iter_status status = CTF_MSG_ITER_STATUS_OK;
+ bt_self_component *self_comp = msg_it->self_comp;
+
+ if (msg_it->cur_exp_packet_total_size == -1) {
+ if (msg_it->cur_exp_packet_content_size != -1) {
+ msg_it->cur_exp_packet_total_size =
+ msg_it->cur_exp_packet_content_size;
+ }
+ } else {
+ if (msg_it->cur_exp_packet_content_size == -1) {
+ msg_it->cur_exp_packet_content_size =
+ msg_it->cur_exp_packet_total_size;
+ }
+ }
+
+ BT_ASSERT((msg_it->cur_exp_packet_total_size >= 0 &&
+ msg_it->cur_exp_packet_content_size >= 0) ||
+ (msg_it->cur_exp_packet_total_size < 0 &&
+ msg_it->cur_exp_packet_content_size < 0));
+
+ if (msg_it->cur_exp_packet_content_size >
+ msg_it->cur_exp_packet_total_size) {
+ BT_COMP_LOGE_APPEND_CAUSE(self_comp,
+ "Invalid packet or content size: "
+ "content size is greater than packet size: "
+ "msg-it-addr=%p, packet-context-field-addr=%p, "
+ "packet-size=%" PRId64 ", content-size=%" PRId64,
+ msg_it, msg_it->dscopes.stream_packet_context,
+ msg_it->cur_exp_packet_total_size,
+ msg_it->cur_exp_packet_content_size);
+ status = CTF_MSG_ITER_STATUS_ERROR;
+ goto end;
+ }
+
+ BT_COMP_LOGD("Set current packet and content sizes: "
+ "msg-it-addr=%p, packet-size=%" PRIu64 ", content-size=%" PRIu64,
+ msg_it, msg_it->cur_exp_packet_total_size,
+ msg_it->cur_exp_packet_content_size);
+
+end:
+ return status;
+}
+
+static
+enum ctf_msg_iter_status after_packet_context_state(struct ctf_msg_iter *msg_it)
+{
+ enum ctf_msg_iter_status status;
+
+ status = set_current_packet_content_sizes(msg_it);
+ if (status != CTF_MSG_ITER_STATUS_OK) {
+ goto end;
+ }
+
+ if (msg_it->emit_stream_beginning_message) {
+ msg_it->state = STATE_EMIT_MSG_STREAM_BEGINNING;
+ } else {
+ msg_it->state = STATE_CHECK_EMIT_MSG_DISCARDED_EVENTS;
+ }
+
+end:
+ return status;
+}
+
+static
+enum ctf_msg_iter_status read_event_header_begin_state(struct ctf_msg_iter *msg_it)
+{
+ enum ctf_msg_iter_status status = CTF_MSG_ITER_STATUS_OK;
+ bt_self_component *self_comp = msg_it->self_comp;
+ struct ctf_field_class *event_header_fc = NULL;
+
+ /* Reset the position of the last event header */
+ msg_it->buf.last_eh_at = msg_it->buf.at;
+ msg_it->cur_event_class_id = -1;
+
+ /* Check if we have some content left */
+ if (msg_it->cur_exp_packet_content_size >= 0) {
+ if (G_UNLIKELY(packet_at(msg_it) ==
+ msg_it->cur_exp_packet_content_size)) {
+ /* No more events! */
+ BT_COMP_LOGD("Reached end of packet: msg-it-addr=%p, "
+ "cur=%zu", msg_it, packet_at(msg_it));
+ msg_it->state = STATE_EMIT_MSG_PACKET_END_MULTI;
+ goto end;
+ } else if (G_UNLIKELY(packet_at(msg_it) >
+ msg_it->cur_exp_packet_content_size)) {
+ /* That's not supposed to happen */
+ BT_COMP_LOGD("Before decoding event header field: cursor is passed the packet's content: "
+ "msg-it-addr=%p, content-size=%" PRId64 ", "
+ "cur=%zu", msg_it,
+ msg_it->cur_exp_packet_content_size,
+ packet_at(msg_it));
+ status = CTF_MSG_ITER_STATUS_ERROR;
+ goto end;
+ }
+ } else {
+ /*
+ * "Infinite" content: we're done when the medium has
+ * nothing else for us.
+ */
+ status = buf_ensure_available_bits(msg_it);
+ switch (status) {
+ case CTF_MSG_ITER_STATUS_OK:
+ break;
+ case CTF_MSG_ITER_STATUS_EOF:
+ status = CTF_MSG_ITER_STATUS_OK;
+ msg_it->state = STATE_EMIT_MSG_PACKET_END_SINGLE;
+ goto end;
+ default:
+ goto end;
+ }
+ }
+
+ release_event_dscopes(msg_it);
+ BT_ASSERT(msg_it->meta.sc);
+ event_header_fc = msg_it->meta.sc->event_header_fc;
+ if (!event_header_fc) {
+ msg_it->state = STATE_AFTER_EVENT_HEADER;
+ goto end;
+ }
+
+ BT_COMP_LOGD("Decoding event header field: "
+ "msg-it-addr=%p, stream-class-addr=%p, "
+ "stream-class-id=%" PRId64 ", "
+ "fc-addr=%p",
+ msg_it, msg_it->meta.sc,
+ msg_it->meta.sc->id,
+ event_header_fc);
+ status = read_dscope_begin_state(msg_it, event_header_fc,
+ STATE_AFTER_EVENT_HEADER,
+ STATE_DSCOPE_EVENT_HEADER_CONTINUE, NULL);
+ if (status < 0) {
+ BT_COMP_LOGE_APPEND_CAUSE(self_comp,
+ "Cannot decode event header field: "
+ "msg-it-addr=%p, stream-class-addr=%p, "
+ "stream-class-id=%" PRId64 ", fc-addr=%p",
+ msg_it, msg_it->meta.sc,
+ msg_it->meta.sc->id,
+ event_header_fc);
+ }
+
+end:
+ return status;
+}
+
+static
+enum ctf_msg_iter_status read_event_header_continue_state(
+ struct ctf_msg_iter *msg_it)
+{
+ return read_dscope_continue_state(msg_it,
+ STATE_AFTER_EVENT_HEADER);
+}
+
+static inline
+enum ctf_msg_iter_status set_current_event_class(struct ctf_msg_iter *msg_it)
+{
+ enum ctf_msg_iter_status status = CTF_MSG_ITER_STATUS_OK;
+ bt_self_component *self_comp = msg_it->self_comp;
+
+ struct ctf_event_class *new_event_class = NULL;
+
+ if (msg_it->cur_event_class_id == -1) {
+ /*
+ * No current event class ID field, therefore only one
+ * event class.
+ */
+ if (msg_it->meta.sc->event_classes->len != 1) {
+ BT_COMP_LOGE_APPEND_CAUSE(self_comp,
+ "Need exactly one event class since there's no event class ID field: "
+ "msg-it-addr=%p", msg_it);
+ status = CTF_MSG_ITER_STATUS_ERROR;
+ goto end;
+ }
+
+ new_event_class = (ctf_event_class *) msg_it->meta.sc->event_classes->pdata[0];
+ msg_it->cur_event_class_id = new_event_class->id;
+ }
+
+ new_event_class = ctf_stream_class_borrow_event_class_by_id(
+ msg_it->meta.sc, msg_it->cur_event_class_id);
+ if (!new_event_class) {
+ BT_COMP_LOGE_APPEND_CAUSE(self_comp,
+ "No event class with ID of event class ID to use in stream class: "
+ "msg-it-addr=%p, stream-class-id=%" PRIu64 ", "
+ "event-class-id=%" PRIu64 ", "
+ "trace-class-addr=%p",
+ msg_it, msg_it->meta.sc->id, msg_it->cur_event_class_id,
+ msg_it->meta.tc);
+ status = CTF_MSG_ITER_STATUS_ERROR;
+ goto end;
+ }
+
+ msg_it->meta.ec = new_event_class;
+ BT_COMP_LOGD("Set current event class: "
+ "msg-it-addr=%p, event-class-addr=%p, "
+ "event-class-id=%" PRId64 ", "
+ "event-class-name=\"%s\"",
+ msg_it, msg_it->meta.ec, msg_it->meta.ec->id,
+ msg_it->meta.ec->name->str);
+
+end:
+ return status;
+}
+
+static inline
+enum ctf_msg_iter_status set_current_event_message(
+ struct ctf_msg_iter *msg_it)
+{
+ enum ctf_msg_iter_status status = CTF_MSG_ITER_STATUS_OK;
+ bt_self_component *self_comp = msg_it->self_comp;
+ bt_message *msg = NULL;
+
+ BT_ASSERT_DBG(msg_it->meta.ec);
+ BT_ASSERT_DBG(msg_it->packet);
+ BT_COMP_LOGD("Creating event message from event class and packet: "
+ "msg-it-addr=%p, ec-addr=%p, ec-name=\"%s\", packet-addr=%p",
+ msg_it, msg_it->meta.ec,
+ msg_it->meta.ec->name->str,
+ msg_it->packet);
+ BT_ASSERT_DBG(msg_it->self_msg_iter);
+ BT_ASSERT_DBG(msg_it->meta.sc);
+
+ if (bt_stream_class_borrow_default_clock_class(msg_it->meta.sc->ir_sc)) {
+ msg = bt_message_event_create_with_packet_and_default_clock_snapshot(
+ msg_it->self_msg_iter, msg_it->meta.ec->ir_ec,
+ msg_it->packet, msg_it->default_clock_snapshot);
+ } else {
+ msg = bt_message_event_create_with_packet(msg_it->self_msg_iter,
+ msg_it->meta.ec->ir_ec, msg_it->packet);
+ }
+
+ if (!msg) {
+ BT_COMP_LOGE_APPEND_CAUSE(self_comp,
+ "Cannot create event message: "
+ "msg-it-addr=%p, ec-addr=%p, ec-name=\"%s\", "
+ "packet-addr=%p",
+ msg_it, msg_it->meta.ec,
+ msg_it->meta.ec->name->str,
+ msg_it->packet);
+ goto error;
+ }
+
+ goto end;
+
+error:
+ BT_MESSAGE_PUT_REF_AND_RESET(msg);
+ status = CTF_MSG_ITER_STATUS_ERROR;
+
+end:
+ BT_MESSAGE_MOVE_REF(msg_it->event_msg, msg);
+ return status;
+}
+
+static
+enum ctf_msg_iter_status after_event_header_state(
+ struct ctf_msg_iter *msg_it)
+{
+ enum ctf_msg_iter_status status;
+
+ status = set_current_event_class(msg_it);
+ if (status != CTF_MSG_ITER_STATUS_OK) {
+ goto end;
+ }
+
+ if (G_UNLIKELY(msg_it->dry_run)) {
+ goto next_state;
+ }
+
+ status = set_current_event_message(msg_it);
+ if (status != CTF_MSG_ITER_STATUS_OK) {
+ goto end;
+ }
+
+ msg_it->event = bt_message_event_borrow_event(
+ msg_it->event_msg);
+ BT_ASSERT_DBG(msg_it->event);
+
+next_state:
+ msg_it->state = STATE_DSCOPE_EVENT_COMMON_CONTEXT_BEGIN;
+
+end:
+ return status;
+}
+
+static
+enum ctf_msg_iter_status read_event_common_context_begin_state(
+ struct ctf_msg_iter *msg_it)
+{
+ enum ctf_msg_iter_status status = CTF_MSG_ITER_STATUS_OK;
+ bt_self_component *self_comp = msg_it->self_comp;
+ struct ctf_field_class *event_common_context_fc;
+
+ event_common_context_fc = msg_it->meta.sc->event_common_context_fc;
+ if (!event_common_context_fc) {
+ msg_it->state = STATE_DSCOPE_EVENT_SPEC_CONTEXT_BEGIN;
+ goto end;
+ }
+
+ if (event_common_context_fc->in_ir && !msg_it->dry_run) {
+ BT_ASSERT_DBG(!msg_it->dscopes.event_common_context);
+ msg_it->dscopes.event_common_context =
+ bt_event_borrow_common_context_field(
+ msg_it->event);
+ BT_ASSERT_DBG(msg_it->dscopes.event_common_context);
+ }
+
+ BT_COMP_LOGT("Decoding event common context field: "
+ "msg-it-addr=%p, stream-class-addr=%p, "
+ "stream-class-id=%" PRId64 ", "
+ "fc-addr=%p",
+ msg_it, msg_it->meta.sc,
+ msg_it->meta.sc->id,
+ event_common_context_fc);
+ status = read_dscope_begin_state(msg_it, event_common_context_fc,
+ STATE_DSCOPE_EVENT_SPEC_CONTEXT_BEGIN,
+ STATE_DSCOPE_EVENT_COMMON_CONTEXT_CONTINUE,
+ msg_it->dscopes.event_common_context);
+ if (status < 0) {
+ BT_COMP_LOGE_APPEND_CAUSE(self_comp,
+ "Cannot decode event common context field: "
+ "msg-it-addr=%p, stream-class-addr=%p, "
+ "stream-class-id=%" PRId64 ", fc-addr=%p",
+ msg_it, msg_it->meta.sc,
+ msg_it->meta.sc->id,
+ event_common_context_fc);
+ }
+
+end:
+ return status;
+}
+
+static
+enum ctf_msg_iter_status read_event_common_context_continue_state(
+ struct ctf_msg_iter *msg_it)
+{
+ return read_dscope_continue_state(msg_it,
+ STATE_DSCOPE_EVENT_SPEC_CONTEXT_BEGIN);
+}
+
+static
+enum ctf_msg_iter_status read_event_spec_context_begin_state(
+ struct ctf_msg_iter *msg_it)
+{
+ enum ctf_msg_iter_status status = CTF_MSG_ITER_STATUS_OK;
+ bt_self_component *self_comp = msg_it->self_comp;
+ struct ctf_field_class *event_spec_context_fc;
+
+ event_spec_context_fc = msg_it->meta.ec->spec_context_fc;
+ if (!event_spec_context_fc) {
+ msg_it->state = STATE_DSCOPE_EVENT_PAYLOAD_BEGIN;
+ goto end;
+ }
+
+ if (event_spec_context_fc->in_ir && !msg_it->dry_run) {
+ BT_ASSERT_DBG(!msg_it->dscopes.event_spec_context);
+ msg_it->dscopes.event_spec_context =
+ bt_event_borrow_specific_context_field(
+ msg_it->event);
+ BT_ASSERT_DBG(msg_it->dscopes.event_spec_context);
+ }
+
+ BT_COMP_LOGT("Decoding event specific context field: "
+ "msg-it-addr=%p, event-class-addr=%p, "
+ "event-class-name=\"%s\", event-class-id=%" PRId64 ", "
+ "fc-addr=%p",
+ msg_it, msg_it->meta.ec,
+ msg_it->meta.ec->name->str,
+ msg_it->meta.ec->id,
+ event_spec_context_fc);
+ status = read_dscope_begin_state(msg_it, event_spec_context_fc,
+ STATE_DSCOPE_EVENT_PAYLOAD_BEGIN,
+ STATE_DSCOPE_EVENT_SPEC_CONTEXT_CONTINUE,
+ msg_it->dscopes.event_spec_context);
+ if (status < 0) {
+ BT_COMP_LOGE_APPEND_CAUSE(self_comp,
+ "Cannot decode event specific context field: "
+ "msg-it-addr=%p, event-class-addr=%p, "
+ "event-class-name=\"%s\", "
+ "event-class-id=%" PRId64 ", fc-addr=%p",
+ msg_it, msg_it->meta.ec,
+ msg_it->meta.ec->name->str,
+ msg_it->meta.ec->id,
+ event_spec_context_fc);
+ }
+
+end:
+ return status;
+}
+
+static
+enum ctf_msg_iter_status read_event_spec_context_continue_state(
+ struct ctf_msg_iter *msg_it)
+{
+ return read_dscope_continue_state(msg_it,
+ STATE_DSCOPE_EVENT_PAYLOAD_BEGIN);
+}
+
+static
+enum ctf_msg_iter_status read_event_payload_begin_state(
+ struct ctf_msg_iter *msg_it)
+{
+ enum ctf_msg_iter_status status = CTF_MSG_ITER_STATUS_OK;
+ bt_self_component *self_comp = msg_it->self_comp;
+ struct ctf_field_class *event_payload_fc;
+
+ event_payload_fc = msg_it->meta.ec->payload_fc;
+ if (!event_payload_fc) {
+ msg_it->state = STATE_EMIT_MSG_EVENT;
+ goto end;
+ }
+
+ if (event_payload_fc->in_ir && !msg_it->dry_run) {
+ BT_ASSERT_DBG(!msg_it->dscopes.event_payload);
+ msg_it->dscopes.event_payload =
+ bt_event_borrow_payload_field(
+ msg_it->event);
+ BT_ASSERT_DBG(msg_it->dscopes.event_payload);
+ }
+
+ BT_COMP_LOGT("Decoding event payload field: "
+ "msg-it-addr=%p, event-class-addr=%p, "
+ "event-class-name=\"%s\", event-class-id=%" PRId64 ", "
+ "fc-addr=%p",
+ msg_it, msg_it->meta.ec,
+ msg_it->meta.ec->name->str,
+ msg_it->meta.ec->id,
+ event_payload_fc);
+ status = read_dscope_begin_state(msg_it, event_payload_fc,
+ STATE_EMIT_MSG_EVENT,
+ STATE_DSCOPE_EVENT_PAYLOAD_CONTINUE,
+ msg_it->dscopes.event_payload);
+ if (status < 0) {
+ BT_COMP_LOGE_APPEND_CAUSE(self_comp,
+ "Cannot decode event payload field: "
+ "msg-it-addr=%p, event-class-addr=%p, "
+ "event-class-name=\"%s\", "
+ "event-class-id=%" PRId64 ", fc-addr=%p",
+ msg_it, msg_it->meta.ec,
+ msg_it->meta.ec->name->str,
+ msg_it->meta.ec->id,
+ event_payload_fc);
+ }
+
+end:
+ return status;
+}
+
+static
+enum ctf_msg_iter_status read_event_payload_continue_state(
+ struct ctf_msg_iter *msg_it)
+{
+ return read_dscope_continue_state(msg_it, STATE_EMIT_MSG_EVENT);
+}
+
+static
+enum ctf_msg_iter_status skip_packet_padding_state(struct ctf_msg_iter *msg_it)
+{
+ enum ctf_msg_iter_status status = CTF_MSG_ITER_STATUS_OK;
+ size_t bits_to_skip;
+ const enum state next_state = STATE_SWITCH_PACKET;
+
+ BT_ASSERT(msg_it->cur_exp_packet_total_size > 0);
+ bits_to_skip = msg_it->cur_exp_packet_total_size - packet_at(msg_it);
+ if (bits_to_skip == 0) {
+ msg_it->state = next_state;
+ goto end;
+ } else {
+ size_t bits_to_consume;
+
+ BT_COMP_LOGD("Trying to skip %zu bits of padding: msg-it-addr=%p, size=%zu",
+ bits_to_skip, msg_it, bits_to_skip);
+ status = buf_ensure_available_bits(msg_it);
+ if (status != CTF_MSG_ITER_STATUS_OK) {
+ goto end;
+ }
+
+ bits_to_consume = MIN(buf_available_bits(msg_it), bits_to_skip);
+ BT_COMP_LOGD("Skipping %zu bits of padding: msg-it-addr=%p, size=%zu",
+ bits_to_consume, msg_it, bits_to_consume);
+ buf_consume_bits(msg_it, bits_to_consume);
+ bits_to_skip = msg_it->cur_exp_packet_total_size -
+ packet_at(msg_it);
+ if (bits_to_skip == 0) {
+ msg_it->state = next_state;
+ goto end;
+ }
+ }
+
+end:
+ return status;
+}
+
+static
+enum ctf_msg_iter_status check_emit_msg_discarded_events(
+ struct ctf_msg_iter *msg_it)
+{
+ msg_it->state = STATE_EMIT_MSG_DISCARDED_EVENTS;
+
+ if (!msg_it->meta.sc->has_discarded_events) {
+ msg_it->state = STATE_CHECK_EMIT_MSG_DISCARDED_PACKETS;
+ goto end;
+ }
+
+ if (msg_it->prev_packet_snapshots.discarded_events == UINT64_C(-1)) {
+ if (msg_it->snapshots.discarded_events == 0 ||
+ msg_it->snapshots.discarded_events == UINT64_C(-1)) {
+ /*
+ * Stream's first packet with no discarded
+ * events or no information about discarded
+ * events: do not emit.
+ */
+ msg_it->state = STATE_CHECK_EMIT_MSG_DISCARDED_PACKETS;
+ }
+ } else {
+ /*
+ * If the previous packet has a value for this counter,
+ * then this counter is defined for the whole stream.
+ */
+ BT_ASSERT(msg_it->snapshots.discarded_events != UINT64_C(-1));
+
+ if (msg_it->snapshots.discarded_events -
+ msg_it->prev_packet_snapshots.discarded_events == 0) {
+ /*
+ * No discarded events since previous packet: do
+ * not emit.
+ */
+ msg_it->state = STATE_CHECK_EMIT_MSG_DISCARDED_PACKETS;
+ }
+ }
+
+end:
+ return CTF_MSG_ITER_STATUS_OK;
+}
+
+static
+enum ctf_msg_iter_status check_emit_msg_discarded_packets(
+ struct ctf_msg_iter *msg_it)
+{
+ msg_it->state = STATE_EMIT_MSG_DISCARDED_PACKETS;
+
+ if (!msg_it->meta.sc->has_discarded_packets) {
+ msg_it->state = STATE_EMIT_MSG_PACKET_BEGINNING;
+ goto end;
+ }
+
+ if (msg_it->prev_packet_snapshots.packets == UINT64_C(-1)) {
+ /*
+ * Stream's first packet or no information about
+ * discarded packets: do not emit. In other words, if
+ * this is the first packet and its sequence number is
+ * not 0, do not consider that packets were previously
+ * lost: we might be reading a partial stream (LTTng
+ * snapshot for example).
+ */
+ msg_it->state = STATE_EMIT_MSG_PACKET_BEGINNING;
+ } else {
+ /*
+ * If the previous packet has a value for this counter,
+ * then this counter is defined for the whole stream.
+ */
+ BT_ASSERT(msg_it->snapshots.packets != UINT64_C(-1));
+
+ if (msg_it->snapshots.packets -
+ msg_it->prev_packet_snapshots.packets <= 1) {
+ /*
+ * No discarded packets since previous packet:
+ * do not emit.
+ */
+ msg_it->state = STATE_EMIT_MSG_PACKET_BEGINNING;
+ }
+ }
+
+end:
+ return CTF_MSG_ITER_STATUS_OK;
+}
+
+static inline
+enum state check_emit_msg_stream_end(struct ctf_msg_iter *msg_it)
+{
+ enum state next_state;
+
+ if (msg_it->emit_stream_end_message) {
+ next_state = STATE_EMIT_MSG_STREAM_END;
+ } else {
+ next_state = STATE_DONE;
+ }
+
+ return next_state;
+}
+
+static inline
+enum ctf_msg_iter_status handle_state(struct ctf_msg_iter *msg_it)
+{
+ enum ctf_msg_iter_status status = CTF_MSG_ITER_STATUS_OK;
+ const enum state state = msg_it->state;
+
+ BT_COMP_LOGT("Handling state: msg-it-addr=%p, state=%s",
+ msg_it, state_string(state));
+
+ // TODO: optimalize!
+ switch (state) {
+ case STATE_INIT:
+ msg_it->state = STATE_SWITCH_PACKET;
+ break;
+ case STATE_SWITCH_PACKET:
+ status = switch_packet_state(msg_it);
+ break;
+ case STATE_DSCOPE_TRACE_PACKET_HEADER_BEGIN:
+ status = read_packet_header_begin_state(msg_it);
+ break;
+ case STATE_DSCOPE_TRACE_PACKET_HEADER_CONTINUE:
+ status = read_packet_header_continue_state(msg_it);
+ break;
+ case STATE_AFTER_TRACE_PACKET_HEADER:
+ status = after_packet_header_state(msg_it);
+ break;
+ case STATE_DSCOPE_STREAM_PACKET_CONTEXT_BEGIN:
+ status = read_packet_context_begin_state(msg_it);
+ break;
+ case STATE_DSCOPE_STREAM_PACKET_CONTEXT_CONTINUE:
+ status = read_packet_context_continue_state(msg_it);
+ break;
+ case STATE_AFTER_STREAM_PACKET_CONTEXT:
+ status = after_packet_context_state(msg_it);
+ break;
+ case STATE_EMIT_MSG_STREAM_BEGINNING:
+ msg_it->state = STATE_CHECK_EMIT_MSG_DISCARDED_EVENTS;
+ break;
+ case STATE_CHECK_EMIT_MSG_DISCARDED_EVENTS:
+ status = check_emit_msg_discarded_events(msg_it);
+ break;
+ case STATE_EMIT_MSG_DISCARDED_EVENTS:
+ msg_it->state = STATE_CHECK_EMIT_MSG_DISCARDED_PACKETS;
+ break;
+ case STATE_CHECK_EMIT_MSG_DISCARDED_PACKETS:
+ status = check_emit_msg_discarded_packets(msg_it);
+ break;
+ case STATE_EMIT_MSG_DISCARDED_PACKETS:
+ msg_it->state = STATE_EMIT_MSG_PACKET_BEGINNING;
+ break;
+ case STATE_EMIT_MSG_PACKET_BEGINNING:
+ msg_it->state = STATE_DSCOPE_EVENT_HEADER_BEGIN;
+ break;
+ case STATE_DSCOPE_EVENT_HEADER_BEGIN:
+ status = read_event_header_begin_state(msg_it);
+ break;
+ case STATE_DSCOPE_EVENT_HEADER_CONTINUE:
+ status = read_event_header_continue_state(msg_it);
+ break;
+ case STATE_AFTER_EVENT_HEADER:
+ status = after_event_header_state(msg_it);
+ break;
+ case STATE_DSCOPE_EVENT_COMMON_CONTEXT_BEGIN:
+ status = read_event_common_context_begin_state(msg_it);
+ break;
+ case STATE_DSCOPE_EVENT_COMMON_CONTEXT_CONTINUE:
+ status = read_event_common_context_continue_state(msg_it);
+ break;
+ case STATE_DSCOPE_EVENT_SPEC_CONTEXT_BEGIN:
+ status = read_event_spec_context_begin_state(msg_it);
+ break;
+ case STATE_DSCOPE_EVENT_SPEC_CONTEXT_CONTINUE:
+ status = read_event_spec_context_continue_state(msg_it);
+ break;
+ case STATE_DSCOPE_EVENT_PAYLOAD_BEGIN:
+ status = read_event_payload_begin_state(msg_it);
+ break;
+ case STATE_DSCOPE_EVENT_PAYLOAD_CONTINUE:
+ status = read_event_payload_continue_state(msg_it);
+ break;
+ case STATE_EMIT_MSG_EVENT:
+ msg_it->state = STATE_DSCOPE_EVENT_HEADER_BEGIN;
+ break;
+ case STATE_EMIT_QUEUED_MSG_EVENT:
+ msg_it->state = STATE_EMIT_MSG_EVENT;
+ break;
+ case STATE_SKIP_PACKET_PADDING:
+ status = skip_packet_padding_state(msg_it);
+ break;
+ case STATE_EMIT_MSG_PACKET_END_MULTI:
+ msg_it->state = STATE_SKIP_PACKET_PADDING;
+ break;
+ case STATE_EMIT_MSG_PACKET_END_SINGLE:
+ msg_it->state = STATE_EMIT_MSG_STREAM_END;
+ break;
+ case STATE_EMIT_QUEUED_MSG_PACKET_END:
+ msg_it->state = STATE_EMIT_MSG_PACKET_END_SINGLE;
+ break;
+ case STATE_CHECK_EMIT_MSG_STREAM_END:
+ msg_it->state = check_emit_msg_stream_end(msg_it);
+ break;
+ case STATE_EMIT_MSG_STREAM_END:
+ msg_it->state = STATE_DONE;
+ break;
+ case STATE_DONE:
+ break;
+ default:
+ BT_COMP_LOGF("Unknown CTF plugin message iterator state: "
+ "msg-it-addr=%p, state=%d", msg_it, msg_it->state);
+ bt_common_abort();
+ }
+
+ BT_COMP_LOGT("Handled state: msg-it-addr=%p, status=%s, "
+ "prev-state=%s, cur-state=%s",
+ msg_it, ctf_msg_iter_status_string(status),
+ state_string(state), state_string(msg_it->state));
+ return status;
+}
+
+BT_HIDDEN
+void ctf_msg_iter_reset_for_next_stream_file(struct ctf_msg_iter *msg_it)
+{
+ BT_ASSERT(msg_it);
+ BT_COMP_LOGD("Resetting message iterator: addr=%p", msg_it);
+ stack_clear(msg_it->stack);
+ msg_it->meta.sc = NULL;
+ msg_it->meta.ec = NULL;
+ BT_PACKET_PUT_REF_AND_RESET(msg_it->packet);
+ BT_STREAM_PUT_REF_AND_RESET(msg_it->stream);
+ BT_MESSAGE_PUT_REF_AND_RESET(msg_it->event_msg);
+ release_all_dscopes(msg_it);
+ msg_it->cur_dscope_field = NULL;
+
+ msg_it->buf.addr = NULL;
+ msg_it->buf.sz = 0;
+ msg_it->buf.at = 0;
+ msg_it->buf.last_eh_at = SIZE_MAX;
+ msg_it->buf.packet_offset = 0;
+ msg_it->state = STATE_INIT;
+ msg_it->cur_exp_packet_content_size = -1;
+ msg_it->cur_exp_packet_total_size = -1;
+ msg_it->cur_packet_offset = -1;
+ msg_it->cur_event_class_id = -1;
+ msg_it->snapshots.beginning_clock = UINT64_C(-1);
+ msg_it->snapshots.end_clock = UINT64_C(-1);
+}
+
+/**
+ * Resets the internal state of a CTF message iterator.
+ */
+BT_HIDDEN
+void ctf_msg_iter_reset(struct ctf_msg_iter *msg_it)
+{
+ ctf_msg_iter_reset_for_next_stream_file(msg_it);
+ msg_it->cur_stream_class_id = -1;
+ msg_it->cur_data_stream_id = -1;
+ msg_it->snapshots.discarded_events = UINT64_C(-1);
+ msg_it->snapshots.packets = UINT64_C(-1);
+ msg_it->prev_packet_snapshots.discarded_events = UINT64_C(-1);
+ msg_it->prev_packet_snapshots.packets = UINT64_C(-1);
+ msg_it->prev_packet_snapshots.beginning_clock = UINT64_C(-1);
+ msg_it->prev_packet_snapshots.end_clock = UINT64_C(-1);
+ msg_it->emit_stream_beginning_message = true;
+ msg_it->emit_stream_end_message = false;
+}
+
+static
+bt_field *borrow_next_field(struct ctf_msg_iter *msg_it)
+{
+ bt_field *next_field = NULL;
+ bt_field *base_field;
+ const bt_field_class *base_fc;
+ bt_field_class_type base_fc_type;
+ size_t index;
+
+ BT_ASSERT_DBG(!stack_empty(msg_it->stack));
+ index = stack_top(msg_it->stack)->index;
+ base_field = stack_top(msg_it->stack)->base;
+ BT_ASSERT_DBG(base_field);
+ base_fc = bt_field_borrow_class_const(base_field);
+ BT_ASSERT_DBG(base_fc);
+ base_fc_type = bt_field_class_get_type(base_fc);
+
+ if (base_fc_type == BT_FIELD_CLASS_TYPE_STRUCTURE) {
+ BT_ASSERT_DBG(index <
+ bt_field_class_structure_get_member_count(
+ bt_field_borrow_class_const(
+ base_field)));
+ next_field =
+ bt_field_structure_borrow_member_field_by_index(
+ base_field, index);
+ } else if (bt_field_class_type_is(base_fc_type,
+ BT_FIELD_CLASS_TYPE_ARRAY)) {
+ BT_ASSERT_DBG(index < bt_field_array_get_length(base_field));
+ next_field = bt_field_array_borrow_element_field_by_index(
+ base_field, index);
+ } else if (bt_field_class_type_is(base_fc_type,
+ BT_FIELD_CLASS_TYPE_VARIANT)) {
+ BT_ASSERT_DBG(index == 0);
+ next_field = bt_field_variant_borrow_selected_option_field(
+ base_field);
+ } else {
+ bt_common_abort();
+ }
+
+ BT_ASSERT_DBG(next_field);
+ return next_field;
+}
+
+static
+void update_default_clock(struct ctf_msg_iter *msg_it, uint64_t new_val,
+ uint64_t new_val_size)
+{
+ uint64_t new_val_mask;
+ uint64_t cur_value_masked;
+
+ BT_ASSERT_DBG(new_val_size > 0);
+
+ /*
+ * Special case for a 64-bit new value, which is the limit
+ * of a clock value as of this version: overwrite the
+ * current value directly.
+ */
+ if (new_val_size == 64) {
+ msg_it->default_clock_snapshot = new_val;
+ goto end;
+ }
+
+ new_val_mask = (1ULL << new_val_size) - 1;
+ cur_value_masked = msg_it->default_clock_snapshot & new_val_mask;
+
+ if (new_val < cur_value_masked) {
+ /*
+ * It looks like a wrap happened on the number of bits
+ * of the requested new value. Assume that the clock
+ * value wrapped only one time.
+ */
+ msg_it->default_clock_snapshot += new_val_mask + 1;
+ }
+
+ /* Clear the low bits of the current clock value. */
+ msg_it->default_clock_snapshot &= ~new_val_mask;
+
+ /* Set the low bits of the current clock value. */
+ msg_it->default_clock_snapshot |= new_val;
+
+end:
+ BT_COMP_LOGT("Updated default clock's value from integer field's value: "
+ "value=%" PRIu64, msg_it->default_clock_snapshot);
+}
+
+static
+enum bt_bfcr_status bfcr_unsigned_int_cb(uint64_t value,
+ struct ctf_field_class *fc, void *data)
+{
+ ctf_msg_iter *msg_it = (ctf_msg_iter *) data;
+ bt_self_component *self_comp = msg_it->self_comp;
+ enum bt_bfcr_status status = BT_BFCR_STATUS_OK;
+
+ bt_field *field = NULL;
+ ctf_field_class_int *int_fc = ctf_field_class_as_int(fc);
+
+ BT_COMP_LOGT("Unsigned integer function called from BFCR: "
+ "msg-it-addr=%p, bfcr-addr=%p, fc-addr=%p, "
+ "fc-type=%d, fc-in-ir=%d, value=%" PRIu64,
+ msg_it, msg_it->bfcr, fc, fc->type, fc->in_ir, value);
+
+ if (G_LIKELY(int_fc->meaning == CTF_FIELD_CLASS_MEANING_NONE)) {
+ goto update_def_clock;
+ }
+
+ switch (int_fc->meaning) {
+ case CTF_FIELD_CLASS_MEANING_EVENT_CLASS_ID:
+ msg_it->cur_event_class_id = value;
+ break;
+ case CTF_FIELD_CLASS_MEANING_DATA_STREAM_ID:
+ msg_it->cur_data_stream_id = value;
+ break;
+ case CTF_FIELD_CLASS_MEANING_PACKET_BEGINNING_TIME:
+ msg_it->snapshots.beginning_clock = value;
+ break;
+ case CTF_FIELD_CLASS_MEANING_PACKET_END_TIME:
+ msg_it->snapshots.end_clock = value;
+ break;
+ case CTF_FIELD_CLASS_MEANING_STREAM_CLASS_ID:
+ msg_it->cur_stream_class_id = value;
+ break;
+ case CTF_FIELD_CLASS_MEANING_MAGIC:
+ if (value != 0xc1fc1fc1) {
+ BT_COMP_LOGE_APPEND_CAUSE(self_comp,
+ "Invalid CTF magic number: msg-it-addr=%p, "
+ "magic=%" PRIx64, msg_it, value);
+ status = BT_BFCR_STATUS_ERROR;
+ goto end;
+ }
+
+ break;
+ case CTF_FIELD_CLASS_MEANING_PACKET_COUNTER_SNAPSHOT:
+ msg_it->snapshots.packets = value;
+ break;
+ case CTF_FIELD_CLASS_MEANING_DISC_EV_REC_COUNTER_SNAPSHOT:
+ msg_it->snapshots.discarded_events = value;
+ break;
+ case CTF_FIELD_CLASS_MEANING_EXP_PACKET_TOTAL_SIZE:
+ msg_it->cur_exp_packet_total_size = value;
+ break;
+ case CTF_FIELD_CLASS_MEANING_EXP_PACKET_CONTENT_SIZE:
+ msg_it->cur_exp_packet_content_size = value;
+ break;
+ default:
+ bt_common_abort();
+ }
+
+update_def_clock:
+ if (G_UNLIKELY(int_fc->mapped_clock_class)) {
+ update_default_clock(msg_it, value, int_fc->base.size);
+ }
+
+ if (G_UNLIKELY(int_fc->storing_index >= 0)) {
+ g_array_index(msg_it->stored_values, uint64_t,
+ (uint64_t) int_fc->storing_index) = value;
+ }
+
+ if (G_UNLIKELY(!fc->in_ir || msg_it->dry_run)) {
+ goto end;
+ }
+
+ field = borrow_next_field(msg_it);
+ BT_ASSERT_DBG(field);
+ BT_ASSERT_DBG(bt_field_borrow_class_const(field) == fc->ir_fc);
+ BT_ASSERT_DBG(bt_field_class_type_is(bt_field_get_class_type(field),
+ BT_FIELD_CLASS_TYPE_UNSIGNED_INTEGER));
+ bt_field_integer_unsigned_set_value(field, value);
+ stack_top(msg_it->stack)->index++;
+
+end:
+ return status;
+}
+
+static
+enum bt_bfcr_status bfcr_unsigned_int_char_cb(uint64_t value,
+ struct ctf_field_class *fc, void *data)
+{
+ int ret;
+ ctf_msg_iter *msg_it = (ctf_msg_iter *) data;
+ bt_self_component *self_comp = msg_it->self_comp;
+ enum bt_bfcr_status status = BT_BFCR_STATUS_OK;
+ bt_field *string_field = NULL;
+ ctf_field_class_int *int_fc = ctf_field_class_as_int(fc);
+ char str[2] = {'\0', '\0'};
+
+ BT_COMP_LOGT("Unsigned integer character function called from BFCR: "
+ "msg-it-addr=%p, bfcr-addr=%p, fc-addr=%p, "
+ "fc-type=%d, fc-in-ir=%d, value=%" PRIu64,
+ msg_it, msg_it->bfcr, fc, fc->type, fc->in_ir, value);
+ BT_ASSERT_DBG(int_fc->meaning == CTF_FIELD_CLASS_MEANING_NONE);
+ BT_ASSERT_DBG(!int_fc->mapped_clock_class);
+ BT_ASSERT_DBG(int_fc->storing_index < 0);
+
+ if (G_UNLIKELY(!fc->in_ir || msg_it->dry_run)) {
+ goto end;
+ }
+
+ if (msg_it->done_filling_string) {
+ goto end;
+ }
+
+ if (value == 0) {
+ msg_it->done_filling_string = true;
+ goto end;
+ }
+
+ string_field = stack_top(msg_it->stack)->base;
+ BT_ASSERT_DBG(bt_field_get_class_type(string_field) ==
+ BT_FIELD_CLASS_TYPE_STRING);
+
+ /* Append character */
+ str[0] = (char) value;
+ ret = bt_field_string_append_with_length(string_field, str, 1);
+ if (ret) {
+ BT_COMP_LOGE_APPEND_CAUSE(self_comp,
+ "Cannot append character to string field's value: "
+ "msg-it-addr=%p, field-addr=%p, ret=%d",
+ msg_it, string_field, ret);
+ status = BT_BFCR_STATUS_ERROR;
+ goto end;
+ }
+
+end:
+ return status;
+}
+
+static
+enum bt_bfcr_status bfcr_signed_int_cb(int64_t value,
+ struct ctf_field_class *fc, void *data)
+{
+ enum bt_bfcr_status status = BT_BFCR_STATUS_OK;
+ bt_field *field = NULL;
+ ctf_msg_iter *msg_it = (ctf_msg_iter *) data;
+ ctf_field_class_int *int_fc = ctf_field_class_as_int(fc);
+
+ BT_COMP_LOGT("Signed integer function called from BFCR: "
+ "msg-it-addr=%p, bfcr-addr=%p, fc-addr=%p, "
+ "fc-type=%d, fc-in-ir=%d, value=%" PRId64,
+ msg_it, msg_it->bfcr, fc, fc->type, fc->in_ir, value);
+ BT_ASSERT_DBG(int_fc->meaning == CTF_FIELD_CLASS_MEANING_NONE);
+
+ if (G_UNLIKELY(int_fc->storing_index >= 0)) {
+ g_array_index(msg_it->stored_values, uint64_t,
+ (uint64_t) int_fc->storing_index) = (uint64_t) value;
+ }
+
+ if (G_UNLIKELY(!fc->in_ir || msg_it->dry_run)) {
+ goto end;
+ }
+
+ field = borrow_next_field(msg_it);
+ BT_ASSERT_DBG(field);
+ BT_ASSERT_DBG(bt_field_borrow_class_const(field) == fc->ir_fc);
+ BT_ASSERT_DBG(bt_field_class_type_is(bt_field_get_class_type(field),
+ BT_FIELD_CLASS_TYPE_SIGNED_INTEGER));
+ bt_field_integer_signed_set_value(field, value);
+ stack_top(msg_it->stack)->index++;
+
+end:
+ return status;
+}
+
+static
+enum bt_bfcr_status bfcr_floating_point_cb(double value,
+ struct ctf_field_class *fc, void *data)
+{
+ enum bt_bfcr_status status = BT_BFCR_STATUS_OK;
+ bt_field *field = NULL;
+ ctf_msg_iter *msg_it = (ctf_msg_iter *) data;
+ bt_field_class_type type;
+
+ BT_COMP_LOGT("Floating point number function called from BFCR: "
+ "msg-it-addr=%p, bfcr-addr=%p, fc-addr=%p, "
+ "fc-type=%d, fc-in-ir=%d, value=%f",
+ msg_it, msg_it->bfcr, fc, fc->type, fc->in_ir, value);
+
+ if (G_UNLIKELY(!fc->in_ir || msg_it->dry_run)) {
+ goto end;
+ }
+
+ field = borrow_next_field(msg_it);
+ type = bt_field_get_class_type(field);
+ BT_ASSERT_DBG(field);
+ BT_ASSERT_DBG(bt_field_borrow_class_const(field) == fc->ir_fc);
+ BT_ASSERT_DBG(bt_field_class_type_is(type, BT_FIELD_CLASS_TYPE_REAL));
+
+ if (type == BT_FIELD_CLASS_TYPE_SINGLE_PRECISION_REAL) {
+ bt_field_real_single_precision_set_value(field, (float) value);
+ } else {
+ bt_field_real_double_precision_set_value(field, value);
+ }
+ stack_top(msg_it->stack)->index++;
+
+end:
+ return status;
+}
+
+static
+enum bt_bfcr_status bfcr_string_begin_cb(
+ struct ctf_field_class *fc, void *data)
+{
+ bt_field *field = NULL;
+ ctf_msg_iter *msg_it = (ctf_msg_iter *) data;
+
+ BT_COMP_LOGT("String (beginning) function called from BFCR: "
+ "msg-it-addr=%p, bfcr-addr=%p, fc-addr=%p, "
+ "fc-type=%d, fc-in-ir=%d",
+ msg_it, msg_it->bfcr, fc, fc->type, fc->in_ir);
+
+ if (G_UNLIKELY(!fc->in_ir || msg_it->dry_run)) {
+ goto end;
+ }
+
+ field = borrow_next_field(msg_it);
+ BT_ASSERT_DBG(field);
+ BT_ASSERT_DBG(bt_field_borrow_class_const(field) == fc->ir_fc);
+ BT_ASSERT_DBG(bt_field_get_class_type(field) ==
+ BT_FIELD_CLASS_TYPE_STRING);
+ bt_field_string_clear(field);
+
+ /*
+ * Push on stack. Not a compound class per se, but we know that
+ * only bfcr_string_cb() may be called between this call and a
+ * subsequent call to bfcr_string_end_cb().
+ */
+ stack_push(msg_it->stack, field);
+
+end:
+ return BT_BFCR_STATUS_OK;
+}
+
+static
+enum bt_bfcr_status bfcr_string_cb(const char *value,
+ size_t len, struct ctf_field_class *fc, void *data)
+{
+ enum bt_bfcr_status status = BT_BFCR_STATUS_OK;
+ bt_field *field = NULL;
+ ctf_msg_iter *msg_it = (ctf_msg_iter *) data;
+ bt_self_component *self_comp = msg_it->self_comp;
+ int ret;
+
+ BT_COMP_LOGT("String (substring) function called from BFCR: "
+ "msg-it-addr=%p, bfcr-addr=%p, fc-addr=%p, "
+ "fc-type=%d, fc-in-ir=%d, string-length=%zu",
+ msg_it, msg_it->bfcr, fc, fc->type, fc->in_ir,
+ len);
+
+ if (G_UNLIKELY(!fc->in_ir || msg_it->dry_run)) {
+ goto end;
+ }
+
+ field = stack_top(msg_it->stack)->base;
+ BT_ASSERT_DBG(field);
+
+ /* Append current substring */
+ ret = bt_field_string_append_with_length(field, value, len);
+ if (ret) {
+ BT_COMP_LOGE_APPEND_CAUSE(self_comp,
+ "Cannot append substring to string field's value: "
+ "msg-it-addr=%p, field-addr=%p, string-length=%zu, "
+ "ret=%d", msg_it, field, len, ret);
+ status = BT_BFCR_STATUS_ERROR;
+ goto end;
+ }
+
+end:
+ return status;
+}
+
+static
+enum bt_bfcr_status bfcr_string_end_cb(
+ struct ctf_field_class *fc, void *data)
+{
+ ctf_msg_iter *msg_it = (ctf_msg_iter *) data;
+
+ BT_COMP_LOGT("String (end) function called from BFCR: "
+ "msg-it-addr=%p, bfcr-addr=%p, fc-addr=%p, "
+ "fc-type=%d, fc-in-ir=%d",
+ msg_it, msg_it->bfcr, fc, fc->type, fc->in_ir);
+
+ if (G_UNLIKELY(!fc->in_ir || msg_it->dry_run)) {
+ goto end;
+ }
+
+ /* Pop string field */
+ stack_pop(msg_it->stack);
+
+ /* Go to next field */
+ stack_top(msg_it->stack)->index++;
+
+end:
+ return BT_BFCR_STATUS_OK;
+}
+
+static
+enum bt_bfcr_status bfcr_compound_begin_cb(
+ struct ctf_field_class *fc, void *data)
+{
+ ctf_msg_iter *msg_it = (ctf_msg_iter *) data;
+ bt_field *field;
+
+ BT_COMP_LOGT("Compound (beginning) function called from BFCR: "
+ "msg-it-addr=%p, bfcr-addr=%p, fc-addr=%p, "
+ "fc-type=%d, fc-in-ir=%d",
+ msg_it, msg_it->bfcr, fc, fc->type, fc->in_ir);
+
+ if (G_UNLIKELY(!fc->in_ir || msg_it->dry_run)) {
+ goto end;
+ }
+
+ /* Borrow field */
+ if (stack_empty(msg_it->stack)) {
+ /* Root: already set by read_dscope_begin_state() */
+ field = msg_it->cur_dscope_field;
+ } else {
+ field = borrow_next_field(msg_it);
+ BT_ASSERT_DBG(field);
+ }
+
+ /* Push field */
+ BT_ASSERT_DBG(field);
+ BT_ASSERT_DBG(bt_field_borrow_class_const(field) == fc->ir_fc);
+ stack_push(msg_it->stack, field);
+
+ /*
+ * Change BFCR "unsigned int" callback if it's a text
+ * array/sequence.
+ */
+ if (fc->type == CTF_FIELD_CLASS_TYPE_ARRAY ||
+ fc->type == CTF_FIELD_CLASS_TYPE_SEQUENCE) {
+ ctf_field_class_array_base *array_fc = ctf_field_class_as_array_base(fc);
+
+ if (array_fc->is_text) {
+ BT_ASSERT_DBG(bt_field_get_class_type(field) ==
+ BT_FIELD_CLASS_TYPE_STRING);
+ msg_it->done_filling_string = false;
+ bt_field_string_clear(field);
+ bt_bfcr_set_unsigned_int_cb(msg_it->bfcr,
+ bfcr_unsigned_int_char_cb);
+ }
+ }
+
+end:
+ return BT_BFCR_STATUS_OK;
+}
+
+static
+enum bt_bfcr_status bfcr_compound_end_cb(
+ struct ctf_field_class *fc, void *data)
+{
+ ctf_msg_iter *msg_it = (ctf_msg_iter *) data;
+
+ BT_COMP_LOGT("Compound (end) function called from BFCR: "
+ "msg-it-addr=%p, bfcr-addr=%p, fc-addr=%p, "
+ "fc-type=%d, fc-in-ir=%d",
+ msg_it, msg_it->bfcr, fc, fc->type, fc->in_ir);
+
+ if (G_UNLIKELY(!fc->in_ir || msg_it->dry_run)) {
+ goto end;
+ }
+
+ BT_ASSERT_DBG(!stack_empty(msg_it->stack));
+ BT_ASSERT_DBG(bt_field_borrow_class_const(stack_top(msg_it->stack)->base) ==
+ fc->ir_fc);
+
+ /*
+ * Reset BFCR "unsigned int" callback if it's a text
+ * array/sequence.
+ */
+ if (fc->type == CTF_FIELD_CLASS_TYPE_ARRAY ||
+ fc->type == CTF_FIELD_CLASS_TYPE_SEQUENCE) {
+ ctf_field_class_array_base *array_fc = ctf_field_class_as_array_base(fc);
+
+ if (array_fc->is_text) {
+ BT_ASSERT_DBG(bt_field_get_class_type(
+ stack_top(msg_it->stack)->base) ==
+ BT_FIELD_CLASS_TYPE_STRING);
+ bt_bfcr_set_unsigned_int_cb(msg_it->bfcr,
+ bfcr_unsigned_int_cb);
+ }
+ }
+
+ /* Pop stack */
+ stack_pop(msg_it->stack);
+
+ /* If the stack is not empty, increment the base's index */
+ if (!stack_empty(msg_it->stack)) {
+ stack_top(msg_it->stack)->index++;
+ }
+
+end:
+ return BT_BFCR_STATUS_OK;
+}
+
+static
+int64_t bfcr_get_sequence_length_cb(struct ctf_field_class *fc, void *data)
+{
+ bt_field *seq_field;
+ ctf_msg_iter *msg_it = (ctf_msg_iter *) data;
+ bt_self_component *self_comp = msg_it->self_comp;
+ struct ctf_field_class_sequence *seq_fc = ctf_field_class_as_sequence(fc);
+ int64_t length;
+ int ret;
+
+ length = (uint64_t) g_array_index(msg_it->stored_values, uint64_t,
+ seq_fc->stored_length_index);
+
+ if (G_UNLIKELY(msg_it->dry_run)){
+ goto end;
+ }
+
+ seq_field = stack_top(msg_it->stack)->base;
+ BT_ASSERT_DBG(seq_field);
+
+ /*
+ * bfcr_get_sequence_length_cb() also gets called back for a
+ * text sequence, but the destination field is a string field.
+ * Only set the field's sequence length if the destination field
+ * is a sequence field.
+ */
+ if (!seq_fc->base.is_text) {
+ BT_ASSERT_DBG(bt_field_class_type_is(
+ bt_field_get_class_type(seq_field),
+ BT_FIELD_CLASS_TYPE_DYNAMIC_ARRAY));
+ ret = bt_field_array_dynamic_set_length(seq_field,
+ (uint64_t) length);
+ if (ret) {
+ BT_COMP_LOGE_APPEND_CAUSE(self_comp,
+ "Cannot set dynamic array field's length field: "
+ "msg-it-addr=%p, field-addr=%p, "
+ "length=%" PRIu64, msg_it, seq_field, length);
+ length = -1;
+ }
+ }
+
+end:
+ return length;
+}
+
+static
+struct ctf_field_class *bfcr_borrow_variant_selected_field_class_cb(
+ struct ctf_field_class *fc, void *data)
+{
+ int ret;
+ uint64_t i;
+ int64_t option_index = -1;
+ ctf_msg_iter *msg_it = (ctf_msg_iter *) data;
+ ctf_field_class_variant *var_fc = ctf_field_class_as_variant(fc);
+ struct ctf_named_field_class *selected_option = NULL;
+ bt_self_component *self_comp = msg_it->self_comp;
+ struct ctf_field_class *ret_fc = NULL;
+ union {
+ uint64_t u;
+ int64_t i;
+ } tag;
+
+ /* Get variant's tag */
+ tag.u = g_array_index(msg_it->stored_values, uint64_t,
+ var_fc->stored_tag_index);
+
+ /*
+ * Check each range to find the selected option's index.
+ */
+ if (var_fc->tag_fc->base.is_signed) {
+ for (i = 0; i < var_fc->ranges->len; i++) {
+ struct ctf_field_class_variant_range *range =
+ ctf_field_class_variant_borrow_range_by_index(
+ var_fc, i);
+
+ if (tag.i >= range->range.lower.i &&
+ tag.i <= range->range.upper.i) {
+ option_index = (int64_t) range->option_index;
+ break;
+ }
+ }
+ } else {
+ for (i = 0; i < var_fc->ranges->len; i++) {
+ struct ctf_field_class_variant_range *range =
+ ctf_field_class_variant_borrow_range_by_index(
+ var_fc, i);
+
+ if (tag.u >= range->range.lower.u &&
+ tag.u <= range->range.upper.u) {
+ option_index = (int64_t) range->option_index;
+ break;
+ }
+ }
+ }
+
+ if (option_index < 0) {
+ BT_COMP_LOGE_APPEND_CAUSE(self_comp,
+ "Cannot find variant field class's option: "
+ "msg-it-addr=%p, var-fc-addr=%p, u-tag=%" PRIu64 ", "
+ "i-tag=%" PRId64, msg_it, var_fc, tag.u, tag.i);
+ ret_fc = NULL;
+ goto end;
+ }
+
+ selected_option = ctf_field_class_variant_borrow_option_by_index(
+ var_fc, (uint64_t) option_index);
+
+ if (selected_option->fc->in_ir && !msg_it->dry_run) {
+ bt_field *var_field = stack_top(msg_it->stack)->base;
+
+ ret = bt_field_variant_select_option_by_index(
+ var_field, option_index);
+ if (ret) {
+ BT_COMP_LOGE_APPEND_CAUSE(self_comp,
+ "Cannot select variant field's option field: "
+ "msg-it-addr=%p, var-field-addr=%p, "
+ "opt-index=%" PRId64, msg_it, var_field,
+ option_index);
+ ret_fc = NULL;
+ goto end;
+ }
+ }
+
+ ret_fc = selected_option->fc;
+
+end:
+ return ret_fc;
+}
+
+static
+bt_message *create_msg_stream_beginning(struct ctf_msg_iter *msg_it)
+{
+ bt_self_component *self_comp = msg_it->self_comp;
+ bt_message *msg;
+
+ BT_ASSERT(msg_it->stream);
+ BT_ASSERT(msg_it->self_msg_iter);
+ msg = bt_message_stream_beginning_create(msg_it->self_msg_iter,
+ msg_it->stream);
+ if (!msg) {
+ BT_COMP_LOGE_APPEND_CAUSE(self_comp,
+ "Cannot create stream beginning message: "
+ "msg-it-addr=%p, stream-addr=%p",
+ msg_it, msg_it->stream);
+ }
+
+ return msg;
+}
+
+static
+bt_message *create_msg_stream_end(struct ctf_msg_iter *msg_it)
+{
+ bt_self_component *self_comp = msg_it->self_comp;
+ bt_message *msg;
+
+ if (!msg_it->stream) {
+ BT_COMP_LOGE_APPEND_CAUSE(self_comp,
+ "Cannot create stream end message because stream is NULL: "
+ "msg-it-addr=%p", msg_it);
+ msg = NULL;
+ goto end;
+ }
+
+ BT_ASSERT(msg_it->self_msg_iter);
+ msg = bt_message_stream_end_create(msg_it->self_msg_iter,
+ msg_it->stream);
+ if (!msg) {
+ BT_COMP_LOGE_APPEND_CAUSE(self_comp,
+ "Cannot create stream end message: "
+ "msg-it-addr=%p, stream-addr=%p",
+ msg_it, msg_it->stream);
+ }
+
+end:
+ return msg;
+}
+
+static
+bt_message *create_msg_packet_beginning(struct ctf_msg_iter *msg_it,
+ bool use_default_cs)
+{
+ bt_self_component *self_comp = msg_it->self_comp;
+ bt_message *msg;
+ const bt_stream_class *sc = msg_it->meta.sc->ir_sc;
+
+ BT_ASSERT(msg_it->packet);
+ BT_ASSERT(sc);
+ BT_ASSERT(msg_it->self_msg_iter);
+
+ if (msg_it->meta.sc->packets_have_ts_begin) {
+ BT_ASSERT(msg_it->snapshots.beginning_clock != UINT64_C(-1));
+ uint64_t raw_cs_value;
+
+ /*
+ * Either use the decoded packet `timestamp_begin` field or the
+ * current stream's default clock_snapshot.
+ */
+ if (use_default_cs) {
+ raw_cs_value = msg_it->default_clock_snapshot;
+ } else {
+ raw_cs_value = msg_it->snapshots.beginning_clock;
+ }
+
+ msg = bt_message_packet_beginning_create_with_default_clock_snapshot(
+ msg_it->self_msg_iter, msg_it->packet,
+ raw_cs_value);
+ } else {
+ msg = bt_message_packet_beginning_create(msg_it->self_msg_iter,
+ msg_it->packet);
+ }
+
+ if (!msg) {
+ BT_COMP_LOGE_APPEND_CAUSE(self_comp,
+ "Cannot create packet beginning message: "
+ "msg-it-addr=%p, packet-addr=%p",
+ msg_it, msg_it->packet);
+ goto end;
+ }
+
+end:
+ return msg;
+}
+
+static
+bt_message *emit_delayed_packet_beg_msg(struct ctf_msg_iter *msg_it)
+{
+ bool packet_beg_ts_need_fix_up;
+
+ msg_it->emit_delayed_packet_beginning_msg = false;
+
+ /*
+ * Only fix the packet's timestamp_begin if it's larger than the first
+ * event of the packet. If there was no event in the packet, the
+ * `default_clock_snapshot` field will be either equal or greater than
+ * `snapshots.beginning_clock` so there is not fix needed.
+ */
+ packet_beg_ts_need_fix_up =
+ msg_it->default_clock_snapshot < msg_it->snapshots.beginning_clock;
+
+ /* create_msg_packet_beginning() logs errors */
+ return create_msg_packet_beginning(msg_it, packet_beg_ts_need_fix_up);
+}
+
+
+static
+bt_message *create_msg_packet_end(struct ctf_msg_iter *msg_it)
+{
+ bt_message *msg;
+ bool update_default_cs = true;
+ bt_self_component *self_comp = msg_it->self_comp;
+
+ if (!msg_it->packet) {
+ msg = NULL;
+ goto end;
+ }
+
+ /*
+ * Check if we need to emit the delayed packet
+ * beginning message instead of the packet end message.
+ */
+ if (G_UNLIKELY(msg_it->emit_delayed_packet_beginning_msg)) {
+ msg = emit_delayed_packet_beg_msg(msg_it);
+ /* Don't forget to emit the packet end message. */
+ msg_it->state = STATE_EMIT_QUEUED_MSG_PACKET_END;
+ goto end;
+ }
+
+ /* Check if may be affected by lttng-crash timestamp_end quirk. */
+ if (G_UNLIKELY(msg_it->meta.tc->quirks.lttng_crash)) {
+ /*
+ * Check if the `timestamp_begin` field is non-zero but
+ * `timestamp_end` is zero. It means the trace is affected by
+ * the lttng-crash packet `timestamp_end` quirk and must be
+ * fixed up by omitting to update the default clock snapshot to
+ * the `timestamp_end` as is typically done.
+ */
+ if (msg_it->snapshots.beginning_clock != 0 &&
+ msg_it->snapshots.end_clock == 0) {
+ update_default_cs = false;
+ }
+ }
+
+ /*
+ * Check if may be affected by lttng event-after-packet `timestamp_end`
+ * quirk.
+ */
+ if (msg_it->meta.tc->quirks.lttng_event_after_packet) {
+ /*
+ * Check if `timestamp_end` is smaller then the current
+ * default_clock_snapshot (which is set to the last event
+ * decoded). It means the trace is affected by the lttng
+ * `event-after-packet` packet `timestamp_end` quirk and must
+ * be fixed up by omitting to update the default clock snapshot
+ * to the `timestamp_end` as is typically done.
+ */
+ if (msg_it->snapshots.end_clock < msg_it->default_clock_snapshot) {
+ update_default_cs = false;
+ }
+ }
+
+ /* Update default clock from packet's end time. */
+ if (msg_it->snapshots.end_clock != UINT64_C(-1) && update_default_cs) {
+ msg_it->default_clock_snapshot = msg_it->snapshots.end_clock;
+ }
+
+ BT_ASSERT(msg_it->self_msg_iter);
+
+ if (msg_it->meta.sc->packets_have_ts_end) {
+ BT_ASSERT(msg_it->snapshots.end_clock != UINT64_C(-1));
+ msg = bt_message_packet_end_create_with_default_clock_snapshot(
+ msg_it->self_msg_iter, msg_it->packet,
+ msg_it->default_clock_snapshot);
+ } else {
+ msg = bt_message_packet_end_create(msg_it->self_msg_iter,
+ msg_it->packet);
+ }
+
+ if (!msg) {
+ BT_COMP_LOGE_APPEND_CAUSE(self_comp,
+ "Cannot create packet end message: "
+ "msg-it-addr=%p, packet-addr=%p",
+ msg_it, msg_it->packet);
+ goto end;
+
+ }
+
+ BT_PACKET_PUT_REF_AND_RESET(msg_it->packet);
+
+end:
+ return msg;
+}
+
+static
+bt_message *create_msg_discarded_events(struct ctf_msg_iter *msg_it)
+{
+ bt_message *msg;
+ bt_self_component *self_comp = msg_it->self_comp;
+ uint64_t beginning_raw_value = UINT64_C(-1);
+ uint64_t end_raw_value = UINT64_C(-1);
+
+ BT_ASSERT(msg_it->self_msg_iter);
+ BT_ASSERT(msg_it->stream);
+ BT_ASSERT(msg_it->meta.sc->has_discarded_events);
+
+ if (msg_it->meta.sc->discarded_events_have_default_cs) {
+ if (msg_it->prev_packet_snapshots.discarded_events == UINT64_C(-1)) {
+ /*
+ * We discarded events, but before (and possibly
+ * including) the current packet: use this packet's time
+ * range, and do not have a specific count.
+ */
+ beginning_raw_value = msg_it->snapshots.beginning_clock;
+ end_raw_value = msg_it->snapshots.end_clock;
+ } else {
+ beginning_raw_value = msg_it->prev_packet_snapshots.end_clock;
+ end_raw_value = msg_it->snapshots.end_clock;
+ }
+
+ BT_ASSERT(beginning_raw_value != UINT64_C(-1));
+ BT_ASSERT(end_raw_value != UINT64_C(-1));
+ msg = bt_message_discarded_events_create_with_default_clock_snapshots(
+ msg_it->self_msg_iter, msg_it->stream, beginning_raw_value,
+ end_raw_value);
+ } else {
+ msg = bt_message_discarded_events_create(msg_it->self_msg_iter,
+ msg_it->stream);
+ }
+
+ if (!msg) {
+ BT_COMP_LOGE_APPEND_CAUSE(self_comp,
+ "Cannot create discarded events message: "
+ "msg-it-addr=%p, stream-addr=%p",
+ msg_it, msg_it->stream);
+ goto end;
+ }
+
+ if (msg_it->prev_packet_snapshots.discarded_events != UINT64_C(-1)) {
+ bt_message_discarded_events_set_count(msg,
+ msg_it->snapshots.discarded_events -
+ msg_it->prev_packet_snapshots.discarded_events);
+ }
+
+end:
+ return msg;
+}
+
+static
+bt_message *create_msg_discarded_packets(struct ctf_msg_iter *msg_it)
+{
+ bt_message *msg;
+ bt_self_component *self_comp = msg_it->self_comp;
+
+ BT_ASSERT(msg_it->self_msg_iter);
+ BT_ASSERT(msg_it->stream);
+ BT_ASSERT(msg_it->meta.sc->has_discarded_packets);
+ BT_ASSERT(msg_it->prev_packet_snapshots.packets !=
+ UINT64_C(-1));
+
+ if (msg_it->meta.sc->discarded_packets_have_default_cs) {
+ BT_ASSERT(msg_it->prev_packet_snapshots.end_clock != UINT64_C(-1));
+ BT_ASSERT(msg_it->snapshots.beginning_clock != UINT64_C(-1));
+ msg = bt_message_discarded_packets_create_with_default_clock_snapshots(
+ msg_it->self_msg_iter, msg_it->stream,
+ msg_it->prev_packet_snapshots.end_clock,
+ msg_it->snapshots.beginning_clock);
+ } else {
+ msg = bt_message_discarded_packets_create(msg_it->self_msg_iter,
+ msg_it->stream);
+ }
+
+ if (!msg) {
+ BT_COMP_LOGE_APPEND_CAUSE(self_comp,
+ "Cannot create discarded packets message: "
+ "msg-it-addr=%p, stream-addr=%p",
+ msg_it, msg_it->stream);
+ goto end;
+ }
+
+ bt_message_discarded_packets_set_count(msg,
+ msg_it->snapshots.packets -
+ msg_it->prev_packet_snapshots.packets - 1);
+
+end:
+ return msg;
+}
+
+BT_HIDDEN
+struct ctf_msg_iter *ctf_msg_iter_create(
+ struct ctf_trace_class *tc,
+ size_t max_request_sz,
+ struct ctf_msg_iter_medium_ops medops, void *data,
+ bt_logging_level log_level,
+ bt_self_component *self_comp,
+ bt_self_message_iterator *self_msg_iter)
+{
+ struct ctf_msg_iter *msg_it = NULL;
+ struct bt_bfcr_cbs cbs = {
+ .classes = {
+ .signed_int = bfcr_signed_int_cb,
+ .unsigned_int = bfcr_unsigned_int_cb,
+ .floating_point = bfcr_floating_point_cb,
+ .string_begin = bfcr_string_begin_cb,
+ .string = bfcr_string_cb,
+ .string_end = bfcr_string_end_cb,
+ .compound_begin = bfcr_compound_begin_cb,
+ .compound_end = bfcr_compound_end_cb,
+ },
+ .query = {
+ .get_sequence_length = bfcr_get_sequence_length_cb,
+ .borrow_variant_selected_field_class = bfcr_borrow_variant_selected_field_class_cb,
+ },
+ };
+
+ BT_ASSERT(tc);
+ BT_ASSERT(medops.request_bytes);
+ BT_ASSERT(medops.borrow_stream);
+ BT_ASSERT(max_request_sz > 0);
+
+ BT_COMP_LOG_CUR_LVL(BT_LOG_DEBUG, log_level, self_comp,
+ "Creating CTF plugin message iterator: "
+ "trace-addr=%p, max-request-size=%zu, "
+ "data=%p, log-level=%s", tc, max_request_sz, data,
+ bt_common_logging_level_string(log_level));
+ msg_it = g_new0(struct ctf_msg_iter, 1);
+ if (!msg_it) {
+ BT_COMP_LOG_CUR_LVL(BT_LOG_ERROR, log_level, self_comp,
+ "Failed to allocate one CTF plugin message iterator.");
+ goto end;
+ }
+ msg_it->self_comp = self_comp;
+ msg_it->self_msg_iter = self_msg_iter;
+ msg_it->log_level = log_level;
+ msg_it->meta.tc = tc;
+ msg_it->medium.medops = medops;
+ msg_it->medium.max_request_sz = max_request_sz;
+ msg_it->medium.data = data;
+ msg_it->stack = stack_new(msg_it);
+ msg_it->stored_values = g_array_new(FALSE, TRUE, sizeof(uint64_t));
+ g_array_set_size(msg_it->stored_values, tc->stored_value_count);
+
+ if (!msg_it->stack) {
+ BT_COMP_LOGE_APPEND_CAUSE(self_comp,
+ "Failed to create field stack.");
+ goto error;
+ }
+
+ msg_it->bfcr = bt_bfcr_create(cbs, msg_it, log_level, NULL);
+ if (!msg_it->bfcr) {
+ BT_COMP_LOGE_APPEND_CAUSE(self_comp,
+ "Failed to create binary class reader (BFCR).");
+ goto error;
+ }
+
+ ctf_msg_iter_reset(msg_it);
+ BT_COMP_LOGD("Created CTF plugin message iterator: "
+ "trace-addr=%p, max-request-size=%zu, "
+ "data=%p, msg-it-addr=%p, log-level=%s",
+ tc, max_request_sz, data, msg_it,
+ bt_common_logging_level_string(log_level));
+ msg_it->cur_packet_offset = 0;
+
+end:
+ return msg_it;
+
+error:
+ ctf_msg_iter_destroy(msg_it);
+ msg_it = NULL;
+ goto end;
+}
+
+void ctf_msg_iter_destroy(struct ctf_msg_iter *msg_it)
+{
+ BT_PACKET_PUT_REF_AND_RESET(msg_it->packet);
+ BT_STREAM_PUT_REF_AND_RESET(msg_it->stream);
+ release_all_dscopes(msg_it);
+
+ BT_COMP_LOGD("Destroying CTF plugin message iterator: addr=%p", msg_it);
+
+ if (msg_it->stack) {
+ BT_COMP_LOGD_STR("Destroying field stack.");
+ stack_destroy(msg_it->stack);
+ }
+
+ if (msg_it->bfcr) {
+ BT_COMP_LOGD("Destroying BFCR: bfcr-addr=%p", msg_it->bfcr);
+ bt_bfcr_destroy(msg_it->bfcr);
+ }
+
+ if (msg_it->stored_values) {
+ g_array_free(msg_it->stored_values, TRUE);
+ }
+
+ g_free(msg_it);
+}
+
+enum ctf_msg_iter_status ctf_msg_iter_get_next_message(
+ struct ctf_msg_iter *msg_it,
+ const bt_message **message)
+{
+ enum ctf_msg_iter_status status = CTF_MSG_ITER_STATUS_OK;
+ bt_self_component *self_comp = msg_it->self_comp;
+
+ BT_ASSERT_DBG(msg_it);
+ BT_ASSERT_DBG(message);
+ BT_COMP_LOGD("Getting next message: msg-it-addr=%p", msg_it);
+
+ while (true) {
+ status = handle_state(msg_it);
+ if (G_UNLIKELY(status == CTF_MSG_ITER_STATUS_AGAIN)) {
+ BT_COMP_LOGD_STR("Medium returned CTF_MSG_ITER_STATUS_AGAIN.");
+ goto end;
+ } else if (G_UNLIKELY(status != CTF_MSG_ITER_STATUS_OK)) {
+ BT_COMP_LOGE_APPEND_CAUSE(self_comp,
+ "Cannot handle state: msg-it-addr=%p, state=%s",
+ msg_it, state_string(msg_it->state));
+ goto end;
+ }
+
+ switch (msg_it->state) {
+ case STATE_EMIT_MSG_EVENT:
+ BT_ASSERT_DBG(msg_it->event_msg);
+
+ /*
+ * Check if we need to emit the delayed packet
+ * beginning message instead of the event message.
+ */
+ if (G_UNLIKELY(msg_it->emit_delayed_packet_beginning_msg)) {
+ *message = emit_delayed_packet_beg_msg(msg_it);
+ if (!*message) {
+ status = CTF_MSG_ITER_STATUS_ERROR;
+ }
+
+ /*
+ * Don't forget to emit the event message of
+ * the event record that was just decoded.
+ */
+ msg_it->state = STATE_EMIT_QUEUED_MSG_EVENT;
+
+ } else {
+ *message = msg_it->event_msg;
+ msg_it->event_msg = NULL;
+ }
+ goto end;
+ case STATE_EMIT_MSG_DISCARDED_EVENTS:
+ /* create_msg_discared_events() logs errors */
+ *message = create_msg_discarded_events(msg_it);
+
+ if (!*message) {
+ status = CTF_MSG_ITER_STATUS_ERROR;
+ }
+
+ goto end;
+ case STATE_EMIT_MSG_DISCARDED_PACKETS:
+ /* create_msg_discared_packets() logs errors */
+ *message = create_msg_discarded_packets(msg_it);
+
+ if (!*message) {
+ status = CTF_MSG_ITER_STATUS_ERROR;
+ }
+
+ goto end;
+ case STATE_EMIT_MSG_PACKET_BEGINNING:
+ if (G_UNLIKELY(msg_it->meta.tc->quirks.barectf_event_before_packet)) {
+ msg_it->emit_delayed_packet_beginning_msg = true;
+ /*
+ * There is no message to return yet as this
+ * packet beginning message is delayed until we
+ * decode the first event message of the
+ * packet.
+ */
+ break;
+ } else {
+ /* create_msg_packet_beginning() logs errors */
+ *message = create_msg_packet_beginning(msg_it, false);
+ if (!*message) {
+ status = CTF_MSG_ITER_STATUS_ERROR;
+ }
+ }
+
+ goto end;
+ case STATE_EMIT_MSG_PACKET_END_SINGLE:
+ case STATE_EMIT_MSG_PACKET_END_MULTI:
+ /* create_msg_packet_end() logs errors */
+ *message = create_msg_packet_end(msg_it);
+
+ if (!*message) {
+ status = CTF_MSG_ITER_STATUS_ERROR;
+ }
+
+ goto end;
+ case STATE_EMIT_MSG_STREAM_BEGINNING:
+ /* create_msg_stream_beginning() logs errors */
+ *message = create_msg_stream_beginning(msg_it);
+ msg_it->emit_stream_beginning_message = false;
+ msg_it->emit_stream_end_message = true;
+
+ if (!*message) {
+ status = CTF_MSG_ITER_STATUS_ERROR;
+ }
+
+ goto end;
+ case STATE_EMIT_MSG_STREAM_END:
+ /* create_msg_stream_end() logs errors */
+ *message = create_msg_stream_end(msg_it);
+ msg_it->emit_stream_end_message = false;
+
+ if (!*message) {
+ status = CTF_MSG_ITER_STATUS_ERROR;
+ }
+
+ goto end;
+ case STATE_DONE:
+ status = CTF_MSG_ITER_STATUS_EOF;
+ goto end;
+ default:
+ /* Non-emitting state: continue */
+ break;
+ }
+ }
+
+end:
+ return status;
+}
+
+static
+enum ctf_msg_iter_status decode_until_state( struct ctf_msg_iter *msg_it,
+ enum state target_state_1, enum state target_state_2)
+{
+ enum ctf_msg_iter_status status = CTF_MSG_ITER_STATUS_OK;
+ bt_self_component *self_comp = msg_it->self_comp;
+
+ BT_ASSERT_DBG(msg_it);
+
+ do {
+ /*
+ * Check if we reached the state at which we want to stop
+ * decoding.
+ */
+ if (msg_it->state == target_state_1 ||
+ msg_it->state == target_state_2) {
+ goto end;
+ }
+
+ status = handle_state(msg_it);
+ if (G_UNLIKELY(status == CTF_MSG_ITER_STATUS_AGAIN)) {
+ BT_COMP_LOGD_STR("Medium returned CTF_MSG_ITER_STATUS_AGAIN.");
+ goto end;
+ } else if (G_UNLIKELY(status != CTF_MSG_ITER_STATUS_OK)) {
+ BT_COMP_LOGE_APPEND_CAUSE(self_comp,
+ "Cannot handle state: msg-it-addr=%p, state=%s",
+ msg_it, state_string(msg_it->state));
+ goto end;
+ }
+
+ switch (msg_it->state) {
+ case STATE_INIT:
+ case STATE_SWITCH_PACKET:
+ case STATE_DSCOPE_TRACE_PACKET_HEADER_BEGIN:
+ case STATE_DSCOPE_TRACE_PACKET_HEADER_CONTINUE:
+ case STATE_AFTER_TRACE_PACKET_HEADER:
+ case STATE_DSCOPE_STREAM_PACKET_CONTEXT_BEGIN:
+ case STATE_DSCOPE_STREAM_PACKET_CONTEXT_CONTINUE:
+ case STATE_AFTER_STREAM_PACKET_CONTEXT:
+ case STATE_EMIT_MSG_STREAM_BEGINNING:
+ case STATE_CHECK_EMIT_MSG_DISCARDED_EVENTS:
+ case STATE_EMIT_MSG_DISCARDED_EVENTS:
+ case STATE_CHECK_EMIT_MSG_DISCARDED_PACKETS:
+ case STATE_EMIT_MSG_DISCARDED_PACKETS:
+ case STATE_EMIT_MSG_PACKET_BEGINNING:
+ case STATE_DSCOPE_EVENT_HEADER_BEGIN:
+ case STATE_DSCOPE_EVENT_HEADER_CONTINUE:
+ case STATE_AFTER_EVENT_HEADER:
+ case STATE_DSCOPE_EVENT_COMMON_CONTEXT_BEGIN:
+ case STATE_DSCOPE_EVENT_COMMON_CONTEXT_CONTINUE:
+ case STATE_DSCOPE_EVENT_SPEC_CONTEXT_BEGIN:
+ case STATE_DSCOPE_EVENT_SPEC_CONTEXT_CONTINUE:
+ case STATE_DSCOPE_EVENT_PAYLOAD_BEGIN:
+ case STATE_DSCOPE_EVENT_PAYLOAD_CONTINUE:
+ case STATE_EMIT_MSG_EVENT:
+ case STATE_EMIT_QUEUED_MSG_EVENT:
+ case STATE_SKIP_PACKET_PADDING:
+ case STATE_EMIT_MSG_PACKET_END_MULTI:
+ case STATE_EMIT_MSG_PACKET_END_SINGLE:
+ case STATE_EMIT_QUEUED_MSG_PACKET_END:
+ case STATE_EMIT_MSG_STREAM_END:
+ break;
+ case STATE_DONE:
+ /* fall-through */
+ default:
+ /* We should never get to the STATE_DONE state. */
+ BT_COMP_LOGF("Unexpected state: msg-it-addr=%p, state=%s",
+ msg_it, state_string(msg_it->state));
+ bt_common_abort();
+ }
+ } while (true);
+
+end:
+ return status;
+}
+
+static
+enum ctf_msg_iter_status read_packet_header_context_fields(
+ struct ctf_msg_iter *msg_it)
+{
+ int ret;
+ enum ctf_msg_iter_status status = CTF_MSG_ITER_STATUS_OK;
+
+ status = decode_until_state(msg_it, STATE_EMIT_MSG_PACKET_BEGINNING, (state) -1);
+ if (status != CTF_MSG_ITER_STATUS_OK) {
+ goto end;
+ }
+
+ ret = set_current_packet_content_sizes(msg_it);
+ if (ret) {
+ status = CTF_MSG_ITER_STATUS_ERROR;
+ goto end;
+ }
+
+end:
+ return status;
+}
+
+BT_HIDDEN
+enum ctf_msg_iter_status ctf_msg_iter_seek(struct ctf_msg_iter *msg_it,
+ off_t offset)
+{
+ enum ctf_msg_iter_status status = CTF_MSG_ITER_STATUS_OK;
+ enum ctf_msg_iter_medium_status medium_status;
+
+ BT_ASSERT(msg_it);
+ BT_ASSERT(offset >= 0);
+ BT_ASSERT(msg_it->medium.medops.seek);
+
+ medium_status = msg_it->medium.medops.seek(offset, msg_it->medium.data);
+ if (medium_status != CTF_MSG_ITER_MEDIUM_STATUS_OK) {
+ if (medium_status == CTF_MSG_ITER_MEDIUM_STATUS_EOF) {
+ status = CTF_MSG_ITER_STATUS_EOF;
+ } else {
+ status = CTF_MSG_ITER_STATUS_ERROR;
+ goto end;
+ }
+ }
+
+ ctf_msg_iter_reset(msg_it);
+ msg_it->cur_packet_offset = offset;
+
+end:
+ return status;
+}
+
+static
+enum ctf_msg_iter_status clock_snapshot_at_msg_iter_state(
+ struct ctf_msg_iter *msg_it, enum state target_state_1,
+ enum state target_state_2, uint64_t *clock_snapshot)
+{
+ enum ctf_msg_iter_status status = CTF_MSG_ITER_STATUS_OK;
+
+ BT_ASSERT_DBG(msg_it);
+ BT_ASSERT_DBG(clock_snapshot);
+ status = decode_until_state(msg_it, target_state_1, target_state_2);
+ if (status != CTF_MSG_ITER_STATUS_OK) {
+ goto end;
+ }
+
+ *clock_snapshot = msg_it->default_clock_snapshot;
+end:
+ return status;
+}
+
+BT_HIDDEN
+enum ctf_msg_iter_status ctf_msg_iter_curr_packet_first_event_clock_snapshot(
+ struct ctf_msg_iter *msg_it, uint64_t *first_clock_snapshot)
+{
+ return clock_snapshot_at_msg_iter_state(msg_it,
+ STATE_AFTER_EVENT_HEADER, (state) -1, first_clock_snapshot);
+}
+
+BT_HIDDEN
+enum ctf_msg_iter_status ctf_msg_iter_curr_packet_last_event_clock_snapshot(
+ struct ctf_msg_iter *msg_it, uint64_t *last_clock_snapshot)
+{
+ return clock_snapshot_at_msg_iter_state(msg_it,
+ STATE_EMIT_MSG_PACKET_END_SINGLE,
+ STATE_EMIT_MSG_PACKET_END_MULTI, last_clock_snapshot);
+}
+
+BT_HIDDEN
+enum ctf_msg_iter_status ctf_msg_iter_get_packet_properties(
+ struct ctf_msg_iter *msg_it,
+ struct ctf_msg_iter_packet_properties *props)
+{
+ enum ctf_msg_iter_status status;
+
+ BT_ASSERT_DBG(msg_it);
+ BT_ASSERT_DBG(props);
+ status = read_packet_header_context_fields(msg_it);
+ if (status != CTF_MSG_ITER_STATUS_OK) {
+ goto end;
+ }
+
+ props->exp_packet_total_size = msg_it->cur_exp_packet_total_size;
+ props->exp_packet_content_size = msg_it->cur_exp_packet_content_size;
+ props->stream_class_id = (uint64_t) msg_it->cur_stream_class_id;
+ props->data_stream_id = msg_it->cur_data_stream_id;
+ props->snapshots.discarded_events = msg_it->snapshots.discarded_events;
+ props->snapshots.packets = msg_it->snapshots.packets;
+ props->snapshots.beginning_clock = msg_it->snapshots.beginning_clock;
+ props->snapshots.end_clock = msg_it->snapshots.end_clock;
+
+end:
+ return status;
+}
+
+BT_HIDDEN
+void ctf_msg_iter_set_dry_run(struct ctf_msg_iter *msg_it,
+ bool val)
+{
+ msg_it->dry_run = val;
+}
projects / babeltrace.git / blobdiff