On Jun 28 17:24, Ozkan Sezer wrote:
> On Thu, Jun 28, 2012 at 5:18 PM, Corinna Vinschen <[email protected]> wrote:
> > On second thought, this #undef/#ifndef juggle is only necessary for
> > FD_SET, given that the other three macros are identical between
> > winsock.h and winsock2.h, isn't it?
> >
>
> Can't remember which, but some other macros have different
> values in ws1 and ws2
>
> BTW, we may conditionally include ws1undef.h, too, like:
>
> --- winsock2.h~
> +++ winsock2.h
> @@ -13,6 +13,7 @@
> #define _WINSOCKAPI_
> #else
> #warning Please include winsock2.h before windows.h
> +#define DO_INCLUDE_WS1UNDEF
> #endif
>
> #ifndef INCL_WINSOCK_API_TYPEDEFS
> @@ -41,7 +42,9 @@
> #define WSAAPI WINAPI
>
> /* undefine macros from winsock.h */
> +#ifdef DO_INCLUDE_WS1UNDEF
> #include <psdk_inc/_ws1_undef.h>
> +#endif
>
> #include <_timeval.h>
> #include <_bsd_types.h>
>
> Just cooked this up in a few seconds, without much thinking.
> If that's OK, you can also retain your ifdefs around those FD_*
> macros too
As far as I can see that wouldn't help much since it would still
potentially undef third party (probably Cygwin) FD_xxx macros.
I think I'd rather go with a _fd_types.h-only solution.
Here's my complete proposal for the fd_set patch again. It includes the
psdk_inc/_fd_types.h file and the psdk_inc/_ws1_undef.h file. The
#undef's are removed from the latter. The FD_xxx macros are still
guarded with #ifndef's. Only the FD_SET handling got more complicated.
Hope that's ok.
Thanks,
Corinna
* psdk_inc/_fd_types.h: Add Cygwin build environment magic to avoid
multiple definition of the select function related datatypes and
macros.
(__WSAFDIsSet): Declare here.
(FD_CLR): Define here.
(FD_ZERO): Ditto.
(FD_ISSET): Ditto.
(FD_SET): Ditto. Make sure to undef FD_SET first, if it has been
defined from winsock.h before.
* psdk_inc/_ws1_undef.h (FD_CLR): Drop #undef.
(FD_ZERO): Ditto.
(FD_ISSET): Ditto.
(FD_SET): Ditto.
Index: include/psdk_inc/_fd_types.h
===================================================================
--- include/psdk_inc/_fd_types.h (revision 5139)
+++ include/psdk_inc/_fd_types.h (working copy)
@@ -12,12 +12,95 @@
#ifndef FD_SETSIZE
#define FD_SETSIZE 64
#endif
+
+#ifndef _SYS_TYPES_FD_SET
+/* fd_set may have been defined by the newlib <sys/types.h>
+ * if __USE_W32_SOCKETS not defined.
+ */
+
typedef struct fd_set
{
u_int fd_count;
SOCKET fd_array[FD_SETSIZE];
} fd_set;
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+int WINAPI __WSAFDIsSet(SOCKET,fd_set *);
+
+#ifdef __cplusplus
+}
+#endif
+
+#ifndef FD_CLR
+#define FD_CLR(fd,set) \
+ do { \
+ u_int __i; \
+ for(__i = 0; __i < ((fd_set *)(set))->fd_count; __i++) { \
+ if (((fd_set *)(set))->fd_array[__i] == fd) { \
+ while (__i < ((fd_set *)(set))->fd_count - 1) { \
+ ((fd_set *)(set))->fd_array[__i] = \
+ ((fd_set *)(set))->fd_array[__i + 1]; \
+ __i++; \
+ } \
+ ((fd_set *)(set))->fd_count--; \
+ break; \
+ } \
+ } \
+ } while(0)
+#endif /* !FD_CLR */
+
+#ifndef FD_ZERO
+#define FD_ZERO(set) (((fd_set *)(set))->fd_count = 0)
+#endif /* !FD_ZERO */
+
+#ifndef FD_ISSET
+#define FD_ISSET(fd,set) __WSAFDIsSet((SOCKET)(fd),(fd_set *)(set))
+#endif /* !FD_ISSET */
+
+/* FD_SET is differently implement in winsock.h and winsock2.h. If we
+ encounter that we are going to redefine it, and if the original definition
+ is from winsock.h, make sure to undef FD_SET so it can be redefined to
+ the winsock2.h version. */
+#ifdef _FD_SET_WINSOCK_DEFINED
+#undef _FD_SET_WINSOCK_DEFINED
+#undef FD_SET
+#endif
+#ifndef FD_SET
+#ifdef _WINSOCK2API_
+#define FD_SET(fd,set) \
+ do { \
+ u_int __i; \
+ for(__i = 0; __i < ((fd_set *)(set))->fd_count; __i++) { \
+ if (((fd_set *)(set))->fd_array[__i] == (fd)) { \
+ break; \
+ } \
+ } \
+ if (__i == ((fd_set *)(set))->fd_count) { \
+ if (((fd_set *)(set))->fd_count < FD_SETSIZE) { \
+ ((fd_set *)(set))->fd_array[__i] = (fd); \
+ ((fd_set *)(set))->fd_count++; \
+ } \
+ } \
+ } while(0)
+#else
+#define _FD_SET_WINSOCK_DEFINED
+#define FD_SET(fd,set) \
+ do { \
+ if (((fd_set *)(set))->fd_count < FD_SETSIZE) \
+ ((fd_set *)(set))->fd_array[((fd_set *)(set))->fd_count++] =\
+ (fd);\
+ } while(0)
+#endif /* _WINSOCK2API_ */
+#endif /* !FD_SET */
+
+#elif !defined(USE_SYS_TYPES_FD_SET)
+#warning "fd_set and associated macros have been defined in sys/types. \
+ This can cause runtime problems with W32 sockets"
+#endif /* !_SYS_TYPES_FD_SET */
+
typedef struct fd_set FD_SET;
typedef struct fd_set *PFD_SET;
typedef struct fd_set *LPFD_SET;
Index: include/psdk_inc/_ws1_undef.h
===================================================================
--- include/psdk_inc/_ws1_undef.h (revision 5139)
+++ include/psdk_inc/_ws1_undef.h (working copy)
@@ -4,11 +4,6 @@
* No warranty is given; refer to the file DISCLAIMER.PD within this package.
*/
-#undef FD_CLR
-#undef FD_ZERO
-#undef FD_ISSET
-#undef FD_SET
-
#undef IOCPARM_MASK
#undef IOC_VOID
#undef IOC_OUT
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