added converter to bsread timestamps

dap/utils/__init__.py

@@ -5,5 +5,6 @@ from .bufjson import BufferedJSON
 from .filehandler import FileHandler
 from .randskip import randskip
 from .sorter import Sorter
+from .timestamp import make_bsread_timestamp
 
 

dap/utils/timestamp.py

@@ -0,0 +1,15 @@
+
+NANOS_PER_S = 10**9
+NANOS_PER_MILLIS = 10**6
+
+
+def make_bsread_timestamp(ts, pid):
+    """
+    ts is assumed to be from time.time_ns() and NOT from time.time()
+    """
+    secs, nanosecs = divmod(ts, NANOS_PER_S)
+    nanosecs = (nanosecs // NANOS_PER_MILLIS) * NANOS_PER_MILLIS + (pid % NANOS_PER_MILLIS)
+    return secs, nanosecs
+
+
+