* errno.cc (errmap): Change mapping of NO_SYSTEM_RESOURCES to EFBIG.
* fhandler.cc (MAX_OVERLAPPED_WRITE_LEN): New constant. (MIN_OVERLAPPED_WRITE_LEN): Ditto. (fhandler_base_overlapped::close): Accommodate change in arguments to wait_overlapped. (fhandler_base_overlapped::setup_overlapped): Add __stdcall and regparm modifiers. (fhandler_base_overlapped::destroy_overlapped): Ditto. (fhandler_base_overlapped::has_ongoing_io): Ditto. (fhandler_base_overlapped::wait_overlapped): Modify to return an enum returning various states. Accept nonblocking parameter. (fhandler_base_overlapped::read_overlapped): Add __stdcall and regparm modifiers. Rework to attempt to be smarter about reacting to states returned by wait_overlapped. (fhandler_base_overlapped::write_overlapped): Ditto. Add fallback option for when wait_overlapped detects that smaller chunks must be written. (fhandler_base_overlapped::write_overlapped_fallback): Ditto. * fhandler.h (DEFAULT_PIPEBUFSIZE): Move definition here from pipe.cc. (fhandler_base::has_ongoing_io): Define with __stdcall and regparm modifiers. (fhandler_base_overlapped::wait_return): New enum. (fhandler_base_overlapped::max_atomic_write): New variable. (fhandler_base_overlapped:: wait_overlapped): Accommodate changes mentioned above to arguments and modifiers. (fhandler_base_overlapped::setup_overlapped): Ditto for modifiers. (fhandler_base_overlapped::read_overlapped): Ditto. (fhandler_base_overlapped::write_overlapped): Ditto. (fhandler_base_overlapped::destroy_overlapped): Ditto. (fhandler_base_overlapped::has_ongoing_io): Ditto. (fhandler_base_overlapped::fhandler_base_overlapped): Zero max_atomic_write. * fhandler_fifo.cc (fhandler_fifo::fhandler_fifo): Set max_atomic_write to the size of the DEFAULT_PIPEBUFSIZE. (fhandler_fifo::wait): Accommodate change in arguments to wait_overlapped. * pipe.cc (fhandler_pipe::fhandler_pipe): Set max_atomic_write to the size of the DEFAULT_PIPEBUFSIZE. (fhandler_pipe::create_selectable): Allow minimum size of DEFAULT_PIPEBUFSIZE. (DEFAULT_PIPEBUFSIZE): Delete here, move to fhandler.h.
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@@ -118,7 +118,7 @@ static NO_COPY struct
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X (NO_MORE_SEARCH_HANDLES, ENFILE),
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X (NO_PROC_SLOTS, EAGAIN),
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X (NO_SIGNAL_SENT, EIO),
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X (NO_SYSTEM_RESOURCES, EAGAIN),
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X (NO_SYSTEM_RESOURCES, EFBIG),
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X (NO_TOKEN, EINVAL),
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X (OPEN_FAILED, EIO),
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X (OPEN_FILES, EAGAIN),
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