Append-mode I/O on Windows and process I/O redirection
martinrb at google.com
Sun Jun 8 11:02:16 PDT 2008
On Sun, Jun 8, 2008 at 2:46 AM, Alan Bateman <Alan.Bateman at sun.com> wrote:
> Martin Buchholz wrote:
>> Perhaps it is easiest to implement append mode by using the current
>> code that uses FileOutputStream and extracts the HANDLE from that,
>> but at the last moment replacing the HANDLE with a new HANDLE
>> that has FILE_WRITE_DATA turned off before calling CreateProcess.
> Assuming you are thinking of ReOpenFile then we would still need a solution
> for Windows XP because that Win32 needs Windows Server 2003 or newer.
Obviously my memory is not what it used to me.
Your comment rings a bell. I now recall having come
to a similar conclusion when I investigated this originally.
Perhaps we should have a hybrid of the two append mode
opening a FileOutputStream in append mode works as
it did in JDK 6, but we provide an extra non-public
way to construct a FileOutputStream that would open
using FILE_APPEND_DATA as in current JDK7. This secret
constructor would only be used by the process creation
code. That would result in minimal changes to the
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