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| author | Christopher Faylor <me@cgf.cx> | 2001-09-24 21:50:44 +0000 |
|---|---|---|
| committer | Christopher Faylor <me@cgf.cx> | 2001-09-24 21:50:44 +0000 |
| commit | 35f879a6d0b6c24045570cf882d1474e1ab0de00 (patch) | |
| tree | 958334eb496e1b3d8f1311d572d78092717787b7 /winsup/cygwin/how-vfork-works.txt | |
| parent | 4367ec036fabc17ed167b798449537d2a05dda71 (diff) | |
| download | cygnal-35f879a6d0b6c24045570cf882d1474e1ab0de00.tar.gz cygnal-35f879a6d0b6c24045570cf882d1474e1ab0de00.tar.bz2 cygnal-35f879a6d0b6c24045570cf882d1474e1ab0de00.zip | |
* fhandler.h (fhandler_pipe::hit_eof): New method.
(writepipe_exists): New class element.
(orig_pid): Ditto.
(id): Ditto.
(is_slow): Eliminate.
* pipe.cc (fhandler_pipe::set_close_on_exec): Set inheritance on
writepipe_exists, if it exists.
(fhandler_pipe::hit_eof): New method, modelled after tty.
(fhandler_pipe::dup): Duplicate writepipe_exists, if it exists.
(make_pipe): Set up a dummy event for pipes on windows 9x. The nonexistence
of this event means that the write side of the pipe has closed.
(_dup): Move to syscalls.cc
(_dup2): Ditto.
* dtable.cc (dtable::build_fhandler): Fill out set_names here, if appropriate.
* syscalls.cc (_open): Call set_names in build_fhandler.
Diffstat (limited to 'winsup/cygwin/how-vfork-works.txt')
| -rw-r--r-- | winsup/cygwin/how-vfork-works.txt | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/winsup/cygwin/how-vfork-works.txt b/winsup/cygwin/how-vfork-works.txt index c45228cad..7148366db 100644 --- a/winsup/cygwin/how-vfork-works.txt +++ b/winsup/cygwin/how-vfork-works.txt @@ -28,8 +28,8 @@ the result of a vfork and closes the extra file handles. This all relies on the fact that the child in a vfork call can affect just about everything in the parent except for the parent's fds. -The assumption is that you don't return from the call that invoked the -vfork. +The assumption is that a vfork is always just used as a method for
+starting a program.
The assumption is also that all of this is much faster than the slow method that cygwin uses to implement fork(). |