1 files changed, 16 insertions, 0 deletions
diff --git a/python/mach/mach/test/zero_microseconds.py b/python/mach/mach/test/zero_microseconds.py
new file mode 100644
index 0000000000..c32ea5b1d5
--- /dev/null
+++ b/python/mach/mach/test/zero_microseconds.py
@@ -0,0 +1,16 @@
+# Make flake8, ruff and autodoc happy
+if "self" not in globals():
+    self = None
+
+# This code is loaded via `mach python --exec-file`, so it runs in the scope of
+# the `mach python` command.
+old = self._mach_context.post_dispatch_handler
+
+
+def handler(context, handler, instance, result, start_time, end_time, depth, args):
+    global old
+    # Round off sub-second precision.
+    old(context, handler, instance, result, int(start_time), end_time, depth, args)
+
+
+self._mach_context.post_dispatch_handler = handler