PT_BLK_GET_OFFSET(3)

NAME

pt_blk_get_offset, pt_blk_get_sync_offset - get an Intel(R) Processor Trace block decoder’s current/synchronization trace buffer offset

SYNOPSIS

#include <intel-pt.h>
int pt_blk_get_offset(const struct pt_block_decoder *decoder,
uint64_t *offset);
int pt_blk_get_sync_offset(const struct pt_block_decoder *decoder,
uint64_t *offset);

Link with -lipt.

DESCRIPTION

pt_blk_get_offset() provides decoder’s current position as offset in bytes from the beginning of decoder’s trace buffer in the unsigned integer variable pointed to by offset.

pt_blk_get_sync_offset() provides decoder’s last synchronization point as offset in bytes from the beginning of decoder’s trace buffer in the unsigned integer variable pointed to by offset.

RETURN VALUE

Both functions return zero on success or a negative pt_error_code enumeration constant in case of an error.

ERRORS

pte_invalid
    The decoder or offset argument is NULL.

pte_nosync
    decoder has not been synchronized onto the trace stream. Use pt_blk_sync_forward(3), pt_blk_sync_backward(3), or pt_blk_sync_set(3) to synchronize decoder.

SEE ALSO

pt_blk_alloc_decoder(3), pt_blk_free_decoder(3), pt_blk_sync_forward(3), pt_blk_sync_backward(3), pt_blk_sync_set(3), pt_blk_get_config(3), pt_blk_time(3), pt_blk_core_bus_ratio(3), pt_blk_next(3)