+struct ltt_event_header_hb {
+ uint32_t timestamp;
+ unsigned char facility_id;
+ unsigned char event_id;
+ uint16_t event_size;
+} LTT_PACKED_STRUCT;
+
+struct ltt_event_header_nohb {
+ uint64_t timestamp;
+ unsigned char facility_id;
+ unsigned char event_id;
+ uint16_t event_size;
+} LTT_PACKED_STRUCT;
+
+
+/* Block and trace headers */
+
+struct ltt_trace_header_any {
+ uint32_t magic_number;
+ uint32_t arch_type;
+ uint32_t arch_variant;
+ uint32_t float_word_order;
+ uint8_t arch_size;
+ uint8_t major_version;
+ uint8_t minor_version;
+ uint8_t flight_recorder;
+ uint8_t has_heartbeat;
+ uint8_t has_alignment; /* Event header alignment */
+ uint8_t has_tsc;
+} LTT_PACKED_STRUCT;
+
+
+/* For version 0.3 */
+
+struct ltt_trace_header_0_3 {
+ uint32_t magic_number;
+ uint32_t arch_type;
+ uint32_t arch_variant;
+ uint32_t float_word_order;
+ uint8_t arch_size;
+ uint8_t major_version;
+ uint8_t minor_version;
+ uint8_t flight_recorder;
+ uint8_t has_heartbeat;
+ uint8_t has_alignment; /* Event header alignment */
+ uint8_t has_tsc;
+} LTT_PACKED_STRUCT;
+
+/* For version 0.4 */
+
+struct ltt_trace_header_0_4 {
+ uint32_t magic_number;
+ uint32_t arch_type;
+ uint32_t arch_variant;
+ uint32_t float_word_order;
+ uint8_t arch_size;
+ uint8_t major_version;
+ uint8_t minor_version;
+ uint8_t flight_recorder;
+ uint8_t has_heartbeat;
+ uint8_t has_alignment; /* Event header alignment */
+ uint8_t has_tsc;
+ uint64_t start_freq;
+ uint64_t start_tsc;
+ uint64_t start_monotonic;
+ struct timespec start_time;
+} LTT_PACKED_STRUCT;
+
+
+struct ltt_block_start_header {
+ struct {
+ struct timeval timestamp;
+ uint64_t cycle_count;
+ uint64_t freq;
+ } begin;
+ struct {
+ struct timeval timestamp;
+ uint64_t cycle_count;
+ uint64_t freq;
+ } end;
+ uint32_t lost_size; /* Size unused at the end of the buffer */
+ uint32_t buf_size; /* The size of this sub-buffer */
+ struct ltt_trace_header_any trace[0];
+} LTT_PACKED_STRUCT;
+