Merge pull request graalvm#134 in G/mx from ~JOSEF.E.EISL_ORACLE.COM/…

…mx:mx-benchmark-conv-value to master

* commit '7d08ef6102b0d103742855f93a08d3a94dfc0e09':
  Bump version to 5.33.0
  mx benchmark: add max_string_field_length and cropping functions
  mx benchmark: add support for custom value formatting functions

mx.py

@@ -13834,7 +13834,7 @@ def alarm_handler(signum, frame):
         # no need to show the stack trace when the user presses CTRL-C
         abort(1)
 
-version = VersionSpec("5.32.0")
+version = VersionSpec("5.33.0")
 
 currentUmask = None
 

mx_benchmark.py

@@ -162,6 +162,28 @@ def add_bm_suite(suite, mxsuite=None):
 
 
 class Rule(object):
+    # the maximum size of a string field
+    max_string_field_length = 255
+
+    @staticmethod
+    def crop_front(prefix=""):
+        """Returns a function that truncates a string at the start."""
+        assert len(prefix) < Rule.max_string_field_length
+        def _crop(path):
+            if len(path) < Rule.max_string_field_length:
+                return str(path)
+            return str(prefix + path[-(Rule.max_string_field_length-len(prefix)):])
+        return _crop
+
+    @staticmethod
+    def crop_back(suffix=""):
+        """Returns a function that truncates a string at the end."""
+        assert len(suffix) < Rule.max_string_field_length
+        def _crop(path):
+            if len(path) < Rule.max_string_field_length:
+                return str(path)
+            return str(path[:Rule.max_string_field_length-len(suffix)] + suffix)
+        return _crop
 
     def parse(self, text):
         """Create a dictionary of variables for every measurment.
@@ -241,6 +263,8 @@ def var(name):
                         inst = float(v)
                     elif vtype is bool:
                         inst = bool(v)
+                    elif hasattr(vtype, '__call__'):
+                        inst = vtype(v)
                     else:
                         raise RuntimeError("Cannot handle type {0}".format(vtype))
                 if type(inst) not in [str, int, float, bool]: