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% PT_PKT_GET_OFFSET(3)
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! Copyright (c) 2015-2017, Intel Corporation
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!
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! Redistribution and use in source and binary forms, with or without
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! modification, are permitted provided that the following conditions are met:
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!
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! * Redistributions of source code must retain the above copyright notice,
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! this list of conditions and the following disclaimer.
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! * Redistributions in binary form must reproduce the above copyright notice,
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! this list of conditions and the following disclaimer in the documentation
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! and/or other materials provided with the distribution.
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! * Neither the name of Intel Corporation nor the names of its contributors
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! may be used to endorse or promote products derived from this software
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! without specific prior written permission.
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!
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! THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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! AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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! IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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! ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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! LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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! CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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! SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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! INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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! CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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! ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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! POSSIBILITY OF SUCH DAMAGE.
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!-->
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# NAME
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pt_pkt_get_offset, pt_pkt_get_sync_offset - get an Intel(R) Processor Trace
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packet decoder's current/synchronization trace buffer offset
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# SYNOPSIS
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| **\#include `<intel-pt.h>`**
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| **int pt_pkt_get_offset(struct pt_packet_decoder \**decoder*,**
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| **uint64_t \**offset*);**
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| **int pt_pkt_get_sync_offset(struct pt_packet_decoder \**decoder*,**
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| **uint64_t \**offset*);**
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Link with *-lipt*.
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# DESCRIPTION
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**pt_pkt_get_offset**() provides *decoder*'s current position as offset in bytes
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from the beginning of *decoder*'s trace buffer in the unsigned integer variable
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pointed to by *offset*.
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**pt_pkt_get_sync_offset**() provides *decoder*'s last synchronization point as
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offset in bytes from the beginning of *decoder*'s trace buffer in the unsigned
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integer variable pointed to by *offset*.
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# RETURN VALUE
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Both functions return zero on success or a negative *pt_error_code* enumeration
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constant in case of an error.
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# ERRORS
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pte_invalid
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: The *decoder* or *offset* argument is NULL.
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pte_nosync
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: *decoder* has not been synchronized onto the trace stream. Use
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**pt_pkt_sync_forward**(3), **pt_pkt_sync_backward**(3), or
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**pt_pkt_sync_set**(3) to synchronize *decoder*.
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# SEE ALSO
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**pt_pkt_alloc_decoder**(3), **pt_pkt_free_decoder**(3),
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**pt_pkt_sync_forward**(3), **pt_pkt_sync_backward**(3),
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**pt_pkt_sync_set**(3), **pt_pkt_next**(3)
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