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* errno.cc (errmap): Change mapping of NO_SYSTEM_RESOURCES to EFBIG.

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* 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.
This commit is contained in:
Christopher Faylor
2011-03-09 16:47:44 +00:00
parent e7b5eaaac9
commit 779ece3ce0
6 changed files with 193 additions and 57 deletions
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9
winsup/cygwin/pipe.cc
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@@ -1,7 +1,7 @@
/* pipe.cc: pipe for Cygwin.
Copyright 1996, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007,
2008, 2009, 2010 Hat, Inc.
2008, 2009, 2010, 2011 Hat, Inc.
This file is part of Cygwin.
@@ -26,6 +26,7 @@ details. */
fhandler_pipe::fhandler_pipe ()
: fhandler_base_overlapped (), popen_pid (0)
{
max_atomic_write = DEFAULT_PIPEBUFSIZE;
need_fork_fixup (true);
uninterruptible_io (true);
}
@@ -217,8 +218,8 @@ fhandler_pipe::create_selectable (LPSECURITY_ATTRIBUTES sa_ptr, HANDLE& r,
r = w = INVALID_HANDLE_VALUE;
/* Ensure that there is enough pipe buffer space for atomic writes. */
if (psize < PIPE_BUF)
psize = PIPE_BUF;
if (psize < DEFAULT_PIPEBUFSIZE)
psize = DEFAULT_PIPEBUFSIZE;
char pipename[MAX_PATH];
const size_t len = __small_sprintf (pipename, PIPE_INTRO "%S-",
@@ -373,8 +374,6 @@ fhandler_pipe::fstatvfs (struct statvfs *sfs)
return -1;
}
#define DEFAULT_PIPEBUFSIZE 65536
extern "C" int
pipe (int filedes[2])
{