[Python-Dev] Add sendfile() to core?

[Thomas Heller]

From: "Andrew Kuchling" <akuchlin@mems-exchange.org>
> The Medusa distribution contains a small module that wraps the
> sendfile() system call, available at least on Unix and FreeBSD.
> The man page explains what sendfile() does:
>
[...]
> sendfile() is used when writing really high-performance Web servers,
> in order to save an unnecessary memory-to-memory copy.  Question:
> should I make up a patch to add a sendfile() wrapper to Python?
>

There is a somewhat similar function on win32 (available in
Win98/NT and newer versions, not in win95):

<quote MSDN>
TransmitFile
The Windows Sockets TransmitFile function transmits file data over a connected socket handle. This function uses the operating
system's cache manager to retrieve the file data, and provides high-performance file data transfer over sockets.
Note  This function is a Microsoft-specific extension to the Windows Sockets specification. For more information, see Microsoft
Extensions and Windows Sockets 2.
BOOL TransmitFile(
  SOCKET hSocket,
  HANDLE hFile,
  DWORD nNumberOfBytesToWrite,
  DWORD nNumberOfBytesPerSend,
  LPOVERLAPPED lpOverlapped,
  LPTRANSMIT_FILE_BUFFERS lpTransmitBuffers,
  DWORD dwFlags
);
</quote>

Would make a nice addition IMO if sendfile is beeing exposed.

Thomas