Обсуждение: pgsql: Eliminate some repetitive coding in tuplesort.c.

Eliminate some repetitive coding in tuplesort.c.

Use a macro LogicalTapeReadExact() to encapsulate the error check when
we want to read an exact number of bytes from a "tape".  Per a suggestion
of Takahiro Itagaki.

Branch
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master

Details
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http://git.postgresql.org/gitweb?p=postgresql.git;a=commitdiff;h=26a7b48e10bea67be719f5bb88cbaa8d4ec1c9b3

Modified Files
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src/backend/utils/sort/tuplesort.c |   69 ++++++++++++++++-------------------
1 files changed, 32 insertions(+), 37 deletions(-)