From 4f19f1474f69adf6719157cae5b50d1a71e66f85 Mon Sep 17 00:00:00 2001
From: zpencer <spencerfang@google.com>
Date: Tue, 13 Mar 2018 17:46:03 -0700
Subject: [PATCH] buildscript: read jmh include class from project property
 (#4215)

The project property can be set form the CLI, so that it is simple to
run JMH on a single class.
---
 build.gradle | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/build.gradle b/build.gradle
index 157b23ef9e..f34da55d98 100644
--- a/build.gradle
+++ b/build.gradle
@@ -288,6 +288,8 @@ subprojects {
         source = fileTree(dir: "src/test", include: "**/*.java")
     }
 
+    // invoke jmh on a single benchmark class like so:
+    //   ./gradlew -PjmhIncludeSingleClass=StatsTraceContextBenchmark clean :grpc-core:jmh
     jmh {
         warmupIterations = 10
         iterations = 10
@@ -296,6 +298,9 @@ subprojects {
         // dependencies that break when including them. (context's testCompile
         // depends on core; core's testCompile depends on testing)
         includeTests = false
+        if (project.hasProperty('jmhIncludeSingleClass')) {
+          include = [project.property('jmhIncludeSingleClass')]
+        }
     }
 
     task javadocJar(type: Jar) {