Run JMH benchmarks using bazel

The benchmarks can be built and run using bazel by running:

$ bazel run //org.eclipse.jgit.benchmarks:benchmarks

Change-Id: I6679750eaa0f2be30ed9d45036e013b0ea4fcc86
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>

1 files changed, 66 insertions, 0 deletions

diff --git a/tools/bzl/jmh.bzl b/tools/bzl/jmh.bzl
new file mode 100644
index 0000000000..eee9ed02c6
--- /dev/null
+++ b/tools/bzl/jmh.bzl
@@ -0,0 +1,66 @@
+# Copyright (C) 2019, Matthias Sohn <matthias.sohn@sap.com>
+# and other copyright owners as documented in the project's IP log.
+#
+# This program and the accompanying materials are made available
+# under the terms of the Eclipse Distribution License v1.0 which
+# accompanies this distribution, is reproduced below, and is
+# available at http://www.eclipse.org/org/documents/edl-v10.php
+#
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or
+# without modification, are permitted provided that the following
+# conditions are met:
+#
+# - Redistributions of source code must retain the above copyright
+#   notice, this list of conditions and the following disclaimer.
+#
+# - Redistributions in binary form must reproduce the above
+#   copyright notice, this list of conditions and the following
+#   disclaimer in the documentation and/or other materials provided
+#   with the distribution.
+#
+# - Neither the name of the Eclipse Foundation, Inc. nor the
+#   names of its contributors may be used to endorse or promote
+#   products derived from this software without specific prior
+#   written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+# CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
+# INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+# STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+# ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+# Definitions to run jmh microbenchmarks
+
+def jmh_java_benchmarks(name, srcs, deps = [], tags = [], plugins = [], **kwargs):
+    """Builds runnable JMH benchmarks.
+    This rule builds a runnable target for one or more JMH benchmarks
+    specified as srcs. It takes the same arguments as java_binary,
+    except for main_class.
+    """
+    plugin_name = "_{}_jmh_annotation_processor".format(name)
+    native.java_plugin(
+        name = plugin_name,
+        deps = ["//lib/jmh:jmh"],
+        processor_class = "org.openjdk.jmh.generators.BenchmarkProcessor",
+        visibility = ["//visibility:private"],
+        tags = tags,
+    )
+    native.java_binary(
+        name = name,
+        srcs = srcs,
+        main_class = "org.openjdk.jmh.Main",
+        deps = deps + ["//lib/jmh:jmh"],
+        plugins = plugins + [plugin_name],
+        tags = tags,
+        **kwargs
+    )
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