1 files changed, 66 insertions, 0 deletions
diff --git a/agent/src/jmh/java/com/code_intelligence/jazzer/instrumentor/EdgeCoverageInstrumentation.java b/agent/src/jmh/java/com/code_intelligence/jazzer/instrumentor/EdgeCoverageInstrumentation.java
new file mode 100644
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+++ b/agent/src/jmh/java/com/code_intelligence/jazzer/instrumentor/EdgeCoverageInstrumentation.java
@@ -0,0 +1,66 @@
+// Copyright 2022 Code Intelligence GmbH
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package com.code_intelligence.jazzer.instrumentor;
+
+import static com.code_intelligence.jazzer.instrumentor.PatchTestUtils.*;
+import static java.lang.invoke.MethodHandles.lookup;
+import static java.lang.invoke.MethodType.methodType;
+
+import com.code_intelligence.jazzer.runtime.CoverageMap;
+import java.lang.invoke.*;
+import java.nio.file.Files;
+import java.util.List;
+import java.util.concurrent.TimeUnit;
+import org.openjdk.jmh.annotations.*;
+
+@Warmup(iterations = 10, time = 3)
+@Measurement(iterations = 10, time = 3)
+@Fork(value = 3)
+@OutputTimeUnit(TimeUnit.NANOSECONDS)
+@BenchmarkMode(Mode.AverageTime)
+@State(Scope.Benchmark)
+@SuppressWarnings("unused")
+public class EdgeCoverageInstrumentation {
+  private MethodHandle exampleMethod;
+
+  @Setup
+  public void setupInstrumentation() throws Throwable {
+    String outDir = System.getenv("TEST_UNDECLARED_OUTPUTS_DIR");
+    if (outDir == null || outDir.isEmpty()) {
+      outDir =
+          Files.createTempDirectory(EdgeCoverageInstrumentation.class.getSimpleName()).toString();
+    }
+
+    byte[] originalBytecode = classToBytecode(EdgeCoverageTarget.class);
+    dumpBytecode(outDir, EdgeCoverageTarget.class.getName(), originalBytecode);
+
+    byte[] patchedBytecode = applyInstrumentation(originalBytecode);
+    dumpBytecode(outDir, EdgeCoverageTarget.class.getName() + ".patched", patchedBytecode);
+
+    Class<?> patchedClass = bytecodeToClass(EdgeCoverageTarget.class.getName(), patchedBytecode);
+    Object obj = lookup().findConstructor(patchedClass, methodType(void.class)).invoke();
+    exampleMethod = lookup().bind(obj, "exampleMethod", methodType(List.class));
+  }
+
+  private byte[] applyInstrumentation(byte[] bytecode) {
+    return new EdgeCoverageInstrumentor(new StaticMethodStrategy(), CoverageMap.class, 0)
+        .instrument(bytecode);
+  }
+
+  @Benchmark
+  public Object benchmarkInstrumentedMethodCall() throws Throwable {
+    return exampleMethod.invoke();
+  }
+}