Helper to write() which retries write() if it is interrupted by a signal (fails
with EINTR).

_PyTime_AsMicroseconds() rounding.

Add also unit tests.

MemoryError.

MemoryError.

multiple threads.

multiple threads.

Windows uses WSAEINTR error code, not EINTR, for socket functions.

Patch by Martin Panter.

Call PyErr_CheckSignals() immediatly if connect() or select() fails with EINTR
in internal_connect().

Refactor also the code to limit indentaton and make it more readable.

Call PyErr_CheckSignals() if connect(), select() or getsockopt() failed with
EINTR.

On Windows, it looks like using the C type socklen_t for getsockopt() (instead
of int) is fine, it was already used in socket.getsockopt().

On Windows, internal_connect() now reuses internal_connect_select() and always
calls getsockopt().

The function now returns the error code instead of using the global errno
(POSIX) or WSAGetLastError() (Windows).

internal_connect() now returns errno if getsockopt() fails.

protocols.

Added WindowsError to compatibility mappings.

Added WindowsError to compatibility mappings.

Based on patch by Rafik Draoui.

* Inline internal_select() function
* Rename internal_select_ex() internal_select()

or nested classes) now are supported with pickle protocols < 4.

Tests by Jessica McKellar.

Fixed ambigious reverse mappings.  Added many new mappings.  Import mapping
is no longer applied to modules already mapped with full name mapping.

Added tests for compatible pickling and unpickling and for consistency of
_compat_pickle mappings.

Fixed ambigious reverse mappings.  Added many new mappings.  Import mapping
is no longer applied to modules already mapped with full name mapping.

Added tests for compatible pickling and unpickling and for consistency of
_compat_pickle mappings.

Selector.select() is now retried with the recomputed timeout when interrupted
by a signal.

Write an unit test with a signal handler raising an exception, and a unit with
a signal handler which does not raise an exception (it does nothing).