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Commit01126dc

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Fix obsolete comments in instr_time.h.
Commit623cc67 removed gettimeofday(), and commits24c3ce8 and495ed0e removed support for very old Windows releases with low accuracytimers, but references to those things were left behind in comments.Reported-by: Tom Lane <tgl@sss.pgh.pa.us>Discussion:https://postgr.es/m/295419.1659918447%40sss.pgh.pa.us
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‎src/include/portability/instr_time.h

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* portable high-precision interval timing
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*
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* This file provides an abstraction layer to hide portability issues in
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* interval timing. On Unix we use clock_gettime() if available, else
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* gettimeofday(). On Windows, gettimeofday() gives a low-precision result
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* so we must use QueryPerformanceCounter() instead. These macros also give
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* some breathing room to use other high-precision-timing APIs.
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* interval timing. On Unix we use clock_gettime(), and on Windows we use
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* QueryPerformanceCounter(). These macros also give some breathing room to
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* use other high-precision-timing APIs.
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*
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* The basic data type is instr_time, which all callers should treat as an
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* opaque typedef. instr_time can store either an absolute time (of

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