1 files changed, 10 insertions, 0 deletions
diff --git a/gpsd.h-tail b/gpsd.h-tail
index 3865fc29..63cfd69f 100644
--- a/gpsd.h-tail
+++ b/gpsd.h-tail
@@ -280,6 +280,16 @@ struct gps_context_t {
 #endif
     ssize_t (*serial_write)(struct gps_device_t *,
 			    const char *buf, const size_t len);
+    /*
+     * Used for calculation of sleep time before select(),
+     * needed to sidestep buggy fast looping selects.
+     */
+#define WINDOW_AVG_SIZE  8        /* reset avg after this number of reads  */
+#define SLEEP_FACTOR     4700000U /* controls the formula to compute delay */
+#define SLEEP_THRESHOLD  4.0      /* delay if avg is less than this        */
+    float inbytesavg;             /* average number of bytes per read      */
+    unsigned char inbyteswpos;
+    bool selectbug;               /* true if the slect bug is triggered    */
 };
 
 /* state for resolving interleaved Type 24 packets */