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Introduce Py_SOCKET_FD_CAN_BE_GE_FD_SETSIZE.

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Proposed by Tim Peters.
This commit is contained in:
Martin v. Löwis 2006-02-11 09:27:05 +00:00
parent 03ca23d892
commit f84d1b9375
3 changed files with 14 additions and 0 deletions
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2
Modules/_ssl.c
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@ -377,8 +377,10 @@ check_socket_and_wait_for_timeout(PySocketSockObject *s, int writing)
return SOCKET_HAS_BEEN_CLOSED;
/* Guard against socket too large for select*/
#ifndef Py_SOCKET_FD_CAN_BE_GE_FD_SETSIZE
if (s->sock_fd >= FD_SETSIZE)
return SOCKET_INVALID;
#endif
/* Construct the arguments to select */
tv.tv_sec = (int)s->sock_timeout;

7
Modules/socketmodule.c
View file

@ -396,7 +396,14 @@ static int taskwindow;
static PyTypeObject sock_type;
/* Can we call select() with this socket without a buffer overrun? */
#ifdef Py_SOCKET_FD_CAN_BE_GE_FD_SETSIZE
/* Platform can select file descriptors beyond FD_SETSIZE */
#define IS_SELECTABLE(s) 1
#else
/* POSIX says selecting file descriptors beyond FD_SETSIZE
has undefined behaviour. */
#define IS_SELECTABLE(s) ((s)->sock_fd < FD_SETSIZE)
#endif
static PyObject*
select_error(void)

5
PC/pyconfig.h
View file

@ -572,4 +572,9 @@ Py_NO_ENABLE_SHARED to find out. Also support MS_NO_COREDLL for b/w compat */
/* Define if you have the thread library (-lthread). */
/* #undef HAVE_LIBTHREAD */
/* WinSock does not use a bitmask in select, and uses
socket handles greater than FD_SETSIZE */
#define Py_SOCKET_FD_CAN_BE_GE_FD_SETSIZE
#endif /* !Py_CONFIG_H */