1 files changed, 58 insertions, 0 deletions
diff --git a/src/xterm.h b/src/xterm.h
new file mode 100644
index 00000000000..34e8496813b
--- /dev/null
+++ b/src/xterm.h
@@ -0,0 +1,58 @@
+#include <X/Xlib.h>
+
+#define XREPBUFSIZE 64
+
+typedef struct 
+  {
+    int rindex;
+    int windex;
+    int mindex;
+    XEvent xrep[XREPBUFSIZE];
+  }
+XREPBUFFER;
+
+extern int x_edges_specified;
+
+#ifndef sigmask
+#define sigmask(no) (1L << ((no) - 1))
+#endif
+
+#ifdef SIGIO
+
+#define BLOCK_INPUT_DECLARE() int BLOCK_INPUT_mask;
+#define BLOCK_INPUT() BLOCK_INPUT_mask = sigblock (sigmask (SIGIO))
+#define UNBLOCK_INPUT() sigsetmask (BLOCK_INPUT_mask)
+#define SIGNAL_INPUT() kill (XXpid, SIGIO)
+
+#define RESIGNAL_INPUT()						\
+do									\
+{									\
+  if (QLength () > 0)							\
+    SIGNAL_INPUT ();							\
+} while (0)
+
+#define SIGNAL_INPUT_WHILE(flag)					\
+do									\
+{									\
+  while (flag)								\
+    SIGNAL_INPUT ();							\
+} while (0)
+
+#define UNBLOCK_INPUT_RESIGNAL()					\
+do									\
+{									\
+  UNBLOCK_INPUT ();							\
+  RESIGNAL_INPUT ();							\
+} while (0)
+
+#else /* SIGIO undefined */
+
+#define BLOCK_INPUT_DECLARE()
+#define BLOCK_INPUT()
+#define UNBLOCK_INPUT()
+#define SIGNAL_INPUT() /* input_available_signal (0) */
+#define RESIGNAL_INPUT()
+#define SIGNAL_INPUT_WHILE(bitblt) /* input_available_signal (0) */
+#define UNBLOCK_INPUT_RESIGNAL()
+
+#endif /* SIGIO */