#define NSEC_PER_USEC 1000
-#define LTT_PACKED_STRUCT __attribute__ ((packed))
-
/* Byte ordering */
#define LTT_GET_BO(t) ((t)->reverse_bo)
-#define LTT_HAS_FLOAT(t) ((t)->float_word_order!=0)
+#define LTT_HAS_FLOAT(t) ((t)->float_word_order ! =0)
#define LTT_GET_FLOAT_BO(t) \
- (((t)->float_word_order==__BYTE_ORDER)?0:1)
+ (((t)->float_word_order == __BYTE_ORDER) ? 0 : 1)
#define SEQUENCE_AVG_ELEMENTS 1000
-
+
+/*
+ * offsetof taken from Linux kernel.
+ */
+#undef offsetof
+#ifdef __compiler_offsetof
+#define offsetof(TYPE,MEMBER) __compiler_offsetof(TYPE,MEMBER)
+#else
+#define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *)0)->MEMBER)
+#endif
+
typedef guint8 uint8_t;
typedef guint16 uint16_t;
typedef guint32 uint32_t;
typedef guint64 uint64_t;
-/* 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 alignment; /* Architecture alignment */
-} LTT_PACKED_STRUCT;
-
-struct ltt_trace_header_2_0 {
- 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 alignment; /* Architecture alignment */
- uint8_t tscbits;
- uint8_t eventbits;
- uint8_t unused1;
- uint32_t freq_scale;
- uint64_t start_freq;
- uint64_t start_tsc;
- uint64_t start_monotonic;
- uint64_t start_time_sec;
- uint64_t start_time_usec;
-} LTT_PACKED_STRUCT;
-
-struct ltt_block_start_header {
- struct {
- uint64_t cycle_count;
- uint64_t freq;
- } begin;
- struct {
- 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;
+/* Subbuffer header */
+struct ltt_subbuffer_header_2_3 {
+ uint64_t cycle_count_begin; /* Cycle count at subbuffer start */
+ uint64_t cycle_count_end; /* Cycle count at subbuffer end */
+ uint32_t magic_number; /*
+ * Trace magic number.
+ * contains endianness information.
+ */
+ uint8_t major_version;
+ uint8_t minor_version;
+ uint8_t arch_size; /* Architecture pointer size */
+ uint8_t alignment; /* LTT data alignment */
+ uint64_t start_time_sec; /* NTP-corrected start time */
+ uint64_t start_time_usec;
+ uint64_t start_freq; /*
+ * Frequency at trace start,
+ * used all along the trace.
+ */
+ uint32_t freq_scale; /* Frequency scaling (divide freq) */
+ uint32_t lost_size; /* Size unused at end of subbuffer */
+ uint32_t buf_size; /* Size of this subbuffer */
+ uint32_t events_lost; /*
+ * Events lost in this subbuffer since
+ * the beginning of the trace.
+ * (may overflow)
+ */
+ uint32_t subbuf_corrupt; /*
+ * Corrupted (lost) subbuffers since
+ * the begginig of the trace.
+ * (may overflow)
+ */
+ char header_end[0]; /* End of header */
+};
+
+typedef struct ltt_subbuffer_header_2_3 ltt_subbuffer_header_t;
+/*
+ * Return header size without padding after the structure. Don't use packed
+ * structure because gcc generates inefficient code on some architectures
+ * (powerpc, mips..)
+ */
+static inline size_t ltt_subbuffer_header_size(void)
+{
+ return offsetof(ltt_subbuffer_header_t, header_end);
+}
enum field_status { FIELD_UNKNOWN, FIELD_VARIABLE, FIELD_FIXED };
/* Timekeeping */
uint64_t tsc; /* Current timestamp counter */
uint64_t freq; /* Frequency in khz */
- //double nsecs_per_cycle; /* Precalculated from freq */
guint32 cyc2ns_scale;
} LttBuffer;
guint pgid; //Usertrace pgid, else 0
guint64 creation; //Usertrace creation, else 0
LttTrace * trace; //trace containing the tracefile
+ struct marker_data *mdata; // marker id/name/fields mapping
int fd; //file descriptor
off_t file_size; //file size
//unsigned block_size; //block_size
uint8_t tscbits;
uint8_t eventbits;
uint64_t tsc_mask;
- uint64_t tsc_mask_next_bit; //next MSB after the mask
+ uint64_t tsc_mask_next_bit; //next MSB after the mask<
+ uint32_t events_lost;
+ uint32_t subbuf_corrupt;
/* Current event */
LttEvent event; //Event currently accessible in the trace
projects / lttv.git / blobdiff