X-Git-Url: https://code.delx.au/gnu-emacs/blobdiff_plain/95ed00257adf283a2740cb3e4feb83c075620ef8..974aae61bbb8c05e0d0fc1a95b419fe596423fd8:/src/w32.h

diff --git a/src/w32.h b/src/w32.h
index f5a701dcb1..622a2256f0 100644
--- a/src/w32.h
+++ b/src/w32.h
@@ -1,3 +1,6 @@
+#ifndef EMACS_W32_H
+#define EMACS_W32_H
+
 /* Support routines for the NT version of Emacs.
    Copyright (C) 1994 Free Software Foundation, Inc.
 
@@ -15,36 +18,124 @@ GNU General Public License for more details.
 
 You should have received a copy of the GNU General Public License
 along with GNU Emacs; see the file COPYING.  If not, write to
-the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
+the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+Boston, MA 02110-1301, USA.  */
+
 
 /* File descriptor set emulation.  */
 
-#ifdef FD_SET
-/* We could get this from param.h, but better not to depend on finding that.
-   And better not to risk that it might define other symbols used in this
-   file.  */
-#ifdef FD_SETSIZE
-#define MAXDESC FD_SETSIZE
-#else
-#define MAXDESC 64
-#endif
+/* MSVC runtime library has limit of 64 descriptors by default */
+#define FD_SETSIZE  64
+typedef struct {
+  unsigned int bits[FD_SETSIZE / 32];
+} fd_set;
+
+/* standard access macros */
+#define FD_SET(n, p) \
+  do { \
+    if ((n) < FD_SETSIZE) { \
+      (p)->bits[(n)/32] |= (1 << (n)%32); \
+    } \
+  } while (0)
+#define FD_CLR(n, p) \
+  do { \
+    if ((n) < FD_SETSIZE) { \
+      (p)->bits[(n)/32] &= ~(1 << (n)%32); \
+    } \
+  } while (0)
+#define FD_ISSET(n, p) ((n) < FD_SETSIZE ? ((p)->bits[(n)/32] & (1 << (n)%32)) : 0)
+#define FD_ZERO(p) memset((p), 0, sizeof(fd_set))
+
 #define SELECT_TYPE fd_set
-#else /* no FD_SET */
-#define MAXDESC 32
-#define SELECT_TYPE int
 
-/* Define the macros to access a single-int bitmap of descriptors.  */
-#define FD_SET(n, p) (*(p) |= (1 << (n)))
-#define FD_CLR(n, p) (*(p) &= ~(1 << (n)))
-#define FD_ISSET(n, p) (*(p) & (1 << (n)))
-#define FD_ZERO(p) (*(p) = 0)
-#endif /* no FD_SET */
+/* ------------------------------------------------------------------------- */
+
+/* child_process.status values */
+enum {
+  STATUS_READ_ERROR = -1,
+  STATUS_READ_READY,
+  STATUS_READ_IN_PROGRESS,
+  STATUS_READ_FAILED,
+  STATUS_READ_SUCCEEDED,
+  STATUS_READ_ACKNOWLEDGED
+};
+
+/* This structure is used for both pipes and sockets; for
+   a socket, the process handle in pi is NULL. */
+typedef struct _child_process
+{
+  int                   fd;
+  int                   pid;
+  HANDLE                char_avail;
+  HANDLE                char_consumed;
+  HANDLE                thrd;
+  HWND                  hwnd;
+  PROCESS_INFORMATION   procinfo;
+  volatile int          status;
+  char                  chr;
+} child_process;
+
+#define MAXDESC FD_SETSIZE
+#define MAX_CHILDREN  MAXDESC/2
+#define CHILD_ACTIVE(cp) ((cp)->char_avail != NULL)
+
+/* parallel array of private info on file handles */
+typedef struct
+{
+  unsigned         flags;
+  HANDLE           hnd;
+  child_process *  cp;
+} filedesc;
+
+extern filedesc fd_info [ MAXDESC ];
+
+/* fd_info flag definitions */
+#define FILE_READ               0x0001
+#define FILE_WRITE              0x0002
+#define FILE_BINARY             0x0010
+#define FILE_LAST_CR            0x0020
+#define FILE_AT_EOF             0x0040
+#define FILE_SEND_SIGCHLD       0x0080
+#define FILE_PIPE               0x0100
+#define FILE_SOCKET             0x0200
+#define FILE_NDELAY             0x0400
+
+extern child_process * new_child (void);
+extern void delete_child (child_process *cp);
+
+/* ------------------------------------------------------------------------- */
+
+/* Equivalent of strerror for W32 error codes.  */
+extern char * w32_strerror (int error_no);
+
+/* Get long (aka "true") form of file name, if it exists.  */
+extern BOOL w32_get_long_filename (char * name, char * buf, int size);
 
 /* Prepare our standard handles for proper inheritance by child processes.  */
-extern void prepare_standard_handles (int in, int out, 
+extern void prepare_standard_handles (int in, int out,
 				      int err, HANDLE handles[4]);
 
 /* Reset our standard handles to their original state.  */
-extern void reset_standard_handles (int in, int out, 
+extern void reset_standard_handles (int in, int out,
 				    int err, HANDLE handles[4]);
 
+/* Return the string resource associated with KEY of type TYPE.  */
+extern LPBYTE w32_get_resource (char * key, LPDWORD type);
+
+extern void init_ntproc (void);
+extern void term_ntproc (void);
+extern void globals_of_w32 (void);
+extern void syms_of_w32term (void);
+extern void syms_of_w32fns (void);
+extern void globals_of_w32fns (void);
+extern void syms_of_w32select (void);
+extern void globals_of_w32select (void);
+extern void term_w32select (void);
+extern void syms_of_w32menu (void);
+extern void globals_of_w32menu (void);
+extern void syms_of_fontset (void);
+
+#endif /* EMACS_W32_H */
+
+/* arch-tag: 02c36b00-312b-4c4d-a1d9-f905c5e968f0
+   (do not change this comment) */