Merge branch 'stable-5.1' into stable-5.2

* stable-5.1:
  Run JMH benchmarks using bazel
  Benchmark for creating files and FileSnapshots
  Implement benchmark for looking up FileStore of a given Path
  JMH benchmark for SimpleLruCache
  Remove unused API problem filters
  Silence API errors for new API added since 5.1.0

Change-Id: If91c55a192d3b2c441d9c8d414f2e24a7261b1b6
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>

1 files changed, 195 insertions, 0 deletions

diff --git a/org.eclipse.jgit.benchmarks/pom.xml b/org.eclipse.jgit.benchmarks/pom.xml
new file mode 100644
index 0000000000..e9b091b15a
--- /dev/null
+++ b/org.eclipse.jgit.benchmarks/pom.xml
@@ -0,0 +1,195 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+   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.
+-->
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+
+    <groupId>org.eclipse.jgit</groupId>
+    <version>5.2.3-SNAPSHOT</version>
+    <artifactId>org.eclipse.jgit.benchmarks</artifactId>
+    <packaging>jar</packaging>
+
+    <name>JGit - JMH based benchmarks</name>
+
+    <properties>
+        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+        <javac.target>1.8</javac.target>
+        <jmh.version>1.21</jmh.version>
+        <uberjar.name>benchmarks</uberjar.name>
+    </properties>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.openjdk.jmh</groupId>
+            <artifactId>jmh-core</artifactId>
+            <version>${jmh.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.openjdk.jmh</groupId>
+            <artifactId>jmh-generator-annprocess</artifactId>
+            <version>${jmh.version}</version>
+            <scope>provided</scope>
+        </dependency>
+        <dependency>
+           <groupId>org.eclipse.jgit</groupId>
+           <artifactId>org.eclipse.jgit</artifactId>
+           <version>${project.version}</version>
+        </dependency>
+    </dependencies>
+
+    <build>
+        <sourceDirectory>src/</sourceDirectory>
+        <plugins>
+            <plugin>
+               <groupId>org.apache.maven.plugins</groupId>
+               <artifactId>maven-compiler-plugin</artifactId>
+               <version>3.8.1</version>
+               <configuration>
+                  <compilerVersion>${javac.target}</compilerVersion>
+                  <source>${javac.target}</source>
+                  <target>${javac.target}</target>
+                  <generatedSourcesDirectory>.apt_generated</generatedSourcesDirectory>
+               </configuration>
+               <executions>
+                  <execution>
+                     <id>compile-with-errorprone</id>
+                     <phase>compile</phase>
+                     <goals>
+                        <goal>compile</goal>
+                     </goals>
+                     <configuration>
+                        <compilerId>javac-with-errorprone</compilerId>
+                        <forceJavacCompilerUse>true</forceJavacCompilerUse>
+                        <compilerArgs>
+                           <arg>-Xep:ExpectedExceptionChecker:ERROR</arg>
+                        </compilerArgs>
+                     </configuration>
+                  </execution>
+               </executions>
+               <dependencies>
+                  <dependency>
+                     <groupId>org.codehaus.plexus</groupId>
+                     <artifactId>plexus-compiler-javac</artifactId>
+                     <version>2.8.5</version>
+                  </dependency>
+                  <dependency>
+                     <groupId>org.codehaus.plexus</groupId>
+                     <artifactId>plexus-compiler-javac-errorprone</artifactId>
+                     <version>2.8.5</version>
+                  </dependency>
+                  <!-- override plexus-compiler-javac-errorprone's dependency on
+                       Error Prone with the latest version -->
+                  <dependency>
+                     <groupId>com.google.errorprone</groupId>
+                     <artifactId>error_prone_core</artifactId>
+                     <version>2.3.3</version>
+                  </dependency>
+               </dependencies>
+            </plugin>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-shade-plugin</artifactId>
+                <executions>
+                    <execution>
+                        <phase>package</phase>
+                        <goals>
+                            <goal>shade</goal>
+                        </goals>
+                        <configuration>
+                            <finalName>${uberjar.name}</finalName>
+                            <transformers>
+                                <transformer implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
+                                    <mainClass>org.openjdk.jmh.Main</mainClass>
+                                </transformer>
+                            </transformers>
+                            <filters>
+                                <filter>
+                                    <!--
+                                        Shading signed JARs will fail without this.
+                                        http://stackoverflow.com/questions/999489/invalid-signature-file-when-attempting-to-run-a-jar
+                                    -->
+                                    <artifact>*:*</artifact>
+                                    <excludes>
+                                        <exclude>META-INF/*.SF</exclude>
+                                        <exclude>META-INF/*.DSA</exclude>
+                                        <exclude>META-INF/*.RSA</exclude>
+                                    </excludes>
+                                </filter>
+                            </filters>
+                        </configuration>
+                    </execution>
+                </executions>
+            </plugin>
+        </plugins>
+        <pluginManagement>
+           <plugins>
+              <!--This plugin's configuration is used to store Eclipse m2e settings only.
+              It has no influence on the Maven build itself.-->
+              <plugin>
+                 <groupId>org.eclipse.m2e</groupId>
+                 <artifactId>lifecycle-mapping</artifactId>
+                 <version>1.0.0</version>
+                 <configuration>
+                    <lifecycleMappingMetadata>
+                       <pluginExecutions>
+                          <pluginExecution>
+                             <pluginExecutionFilter>
+                                <groupId>org.apache.maven.plugins</groupId>
+                                <artifactId>maven-antrun-plugin</artifactId>
+                                <versionRange>[1.8,)</versionRange>
+                                <goals>
+                                   <goal>run</goal>
+                                </goals>
+                             </pluginExecutionFilter>
+                             <action>
+                                <ignore></ignore>
+                             </action>
+                          </pluginExecution>
+                       </pluginExecutions>
+                    </lifecycleMappingMetadata>
+                 </configuration>
+              </plugin>
+           </plugins>
+        </pluginManagement>
+    </build>
+</project>