Preliminary change to make fifos/pipes interruptible and fifos reliable.

* dtable.cc (dtable::find_fifo): Eliminate definition.
* dtable.h (dtable::find_fifo): Ditto for declaration.
* fhandler.cc (fhandler_base::raw_read): Remove pipe-specific stuff.
(fhandler_base::fhandler_base): Ditto.
(fhandler_base::close): Handle overlapped I/O structure if appropriate.
(fhandler_base::dup): Ditto.
(fhandler_base::fork_fixup): Ditto.
(fhandler_base::setup_overlapped): Define new function.
(fhandler_base::destroy_overlapped): Ditto.
(fhandler_base::wait_overlapped): Ditto.
(fhandler_base::read_overlapped): Ditto.
(fhandler_base::write_overlapped): Ditto.
* fhandler.h (fhandler_base::get_overlapped): Declare new function.
(fhandler_base::setup_overlapped): Ditto.
(fhandler_base::destroy_overlapped): Ditto.
(fhandler_base::wait_overlapped): Ditto.
(fhandler_base::read_overlapped): Ditto.
(fhandler_base::write_overlapped): Ditto.
(fhandler_base::get_guard): Eliminate.
(fhandler_pipe::*): Rework to eliminate most Win9x related cruft, removing many
variables and defining a new overlapped capability.
(fhandler_fifo::*): Ditto.
(fifo_state): Declare new enum.
* fhandler_fifo.cc (fhandler_fifo::fhandler_fifo): Remove old Win9x stuff.
Initialize overlapped handle to NULL.
(fhandler_fifo::set_use): Eliminate.
(fhandler_fifo::open_nonserver): Define.
(fhandler_fifo::open): Rework to use named pipes and overlapped I/O.
(fhandler_fifo::wait): Define new function to wait for named pipe connection.
(fhandler_fifo::read): Rework to use wait() and new overlapped I/O
functionality.
(fhandler_fifo::write): Ditto.
(fhandler_fifo::dup): Eliminate.
* pinfo.cc (commune_process): Remove fifo handling.
(_pinfo::commune_request): Ditto.
* pinfo.h (picom): Ditto.
* pipe.cc (fhandler_pipe::fhandler_pipe): Remove Win9x stuff.  Initialize
overlapped handle to NULL.
(fhandler_pipe::open): Eliminate Win9x stuff.
(fhandler_pipe::set_close_on_exec): Eliminate.
(read_pipe): Eliminate.
(fhandler_pipe::close): Ditto.
(fhandler_pipe::fixup_after_exec): Ditto.
(fhandler_pipe::fixup_in_child): Ditto.
(fhandler_pipe::read): Rework to use overlapped I/O.
(fhandler_pipe::write): New function using overlapped I/O.
(fhandler_pipe::dup): Rework to eliminate Win9x stuff.
(fhandler_pipe::create_selectable): Rework to eliminate Win9x and use
overlapped I/O.
* select.cc (peek_pipe): Rework to eliminate Win9x stuff and use overlapped
I/O.
(fhandler_base::ready_for_read): Ditto.

1 files changed, 5 insertions, 6 deletions

diff --git a/winsup/cygwin/pinfo.h b/winsup/cygwin/pinfo.h
index 95e8d2617..b6b46e6b8 100644
--- a/winsup/cygwin/pinfo.h
+++ b/winsup/cygwin/pinfo.h
@@ -24,12 +24,11 @@ enum picom
 {
   PICOM_EXTRASTR = 0x80000000,
   PICOM_CMDLINE = 1,
-  PICOM_FIFO = PICOM_EXTRASTR | 2,
-  PICOM_CWD = 3,
-  PICOM_ROOT = 4,
-  PICOM_FDS = 5,
-  PICOM_FD = 6,
-  PICOM_PIPE_FHANDLER = 7
+  PICOM_CWD = 2,
+  PICOM_ROOT = 3,
+  PICOM_FDS = 4,
+  PICOM_FD = 5,
+  PICOM_PIPE_FHANDLER = 6
 };
 
 #define EXITCODE_SET	0x8000000