Re: [PATCH v2 13/14] daemon: use select() instead of poll()

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On Sat, Jan 16, 2010 at 12:08 AM, Erik Faye-Lund
<kusmabite@xxxxxxxxxxxxxx> wrote:
> On Fri, Jan 15, 2010 at 11:49 PM, Johannes Sixt <j6t@xxxxxxxx> wrote:
>> On Freitag, 15. Januar 2010, Erik Faye-Lund wrote:
>>> +#undef FD_SET
>>> +#define FD_SET(fd, set) do { \
>>> +     ((fd_set*)(set))->fd_array[((fd_set *)(set))->fd_count++] =
>>> _get_osfhandle(fd); \ +       } while(0)
>>> +#undef FD_ISSET
>>> +#define FD_ISSET(fd, set) __WSAFDIsSet(_get_osfhandle(fd), (fd_set
>>> *)(set)) +
>>
>> I'm worried about the internals that you have to use here. Isn't it possible
>> save the original macro text and use it in the new definition, like (this is
>> for exposition only):
>>
>> #define ORIG_FD_SET(fd, set) FD_SET(fd, set)
>> #undef FD_SET
>> #define FD_SET(fd, set) ORIG_FD_SET(_get_osfhandle(fd), set)
>>
>
> Redefining it is indeed fishy - I guess I should also have noted that
> I even stripped the code down slightly (compared to the original).
>
> I'm no preprocessor wizard, but I'll give it a stab.
>

The following worked for me:

diff --git a/compat/mingw.h b/compat/mingw.h
index e515726..ea15967 100644
--- a/compat/mingw.h
+++ b/compat/mingw.h
@@ -269,10 +269,13 @@ int mingw_accept(int sockfd, struct sockaddr
*sa, socklen_t *sz);
 int mingw_rename(const char*, const char*);
 #define rename mingw_rename

+static inline void mingw_fd_set(int fd, fd_set *set)
+{
+	FD_SET(_get_osfhandle(fd), set);
+}
 #undef FD_SET
-#define FD_SET(fd, set) do { \
-	((fd_set*)(set))->fd_array[((fd_set *)(set))->fd_count++] =
_get_osfhandle(fd); \
-	} while(0)
+#define FD_SET(a,b) mingw_fd_set(a,b)
+
 #undef FD_ISSET
 #define FD_ISSET(fd, set) __WSAFDIsSet(_get_osfhandle(fd), (fd_set *)(set))


-- 
Erik "kusma" Faye-Lund
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