Actually, it's not that hard to merge the Windows pqsignal code ...
... just need to typedef sigset_t and provide sigemptyset/sigfillset,
which are easy enough.
Branch
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master
Details
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http://git.postgresql.org/pg/commitdiff/f333204bbcd32091311b070e8f8ab4717dd8cadf
Modified Files
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src/backend/libpq/pqsignal.c | 24 +-----------------------
src/include/libpq/pqsignal.h | 21 +++++++++------------
2 files changed, 10 insertions(+), 35 deletions(-)