Enable profiled guided compilation in dex2oat
- add parsing of the profile info saved during JIT.
- don't compile methods which are not part of the profile info.
- delete old profile hooks.
- add test for reading/writing profile. The test is disable in:
* interpreter modes: the test needs JIT.
* no-dex2oat/no-prebuild: we only save profiling info for the primary
oat file. In these modes we don't create oat files and thus nothing
is saved.
Bug:26080105
Change-Id: Ifdc63dc9d4b537fc79e54c3edc3ae3a462bc30fb
diff --git a/test/554-jit-profile-file/src/Main.java b/test/554-jit-profile-file/src/Main.java
new file mode 100644
index 0000000..b581a67
--- /dev/null
+++ b/test/554-jit-profile-file/src/Main.java
@@ -0,0 +1,143 @@
+/*
+ * Copyright (C) 2015 The Android Open Source Project
+ *
+ * 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.
+ */
+
+import java.io.File;
+import java.io.IOException;
+import java.lang.reflect.Method;
+import java.util.HashMap;
+
+public class Main {
+
+ public void coldMethod() {
+ hotMethod();
+ }
+
+ public String hotMethod() {
+ HashMap<String, String> map = new HashMap<String, String>();
+ for (int i = 0; i < 10; i++) {
+ map.put("" + i, "" + i + 1);
+ }
+ return map.get("1");
+ }
+
+ private static final String PKG_NAME = "test.package";
+ private static final String APP_DIR_PREFIX = "app_dir_";
+ private static final String CODE_CACHE = "code_cache";
+ private static final String PROFILE_FILE = PKG_NAME + ".prof";
+ private static final String TEMP_FILE_NAME_PREFIX = "dummy";
+ private static final String TEMP_FILE_NAME_SUFFIX = "-file";
+ private static final int JIT_INVOCATION_COUNT = 101;
+
+ /* needs to match Runtime:: kProfileBackground */
+ private static final int PROFILE_BACKGROUND = 1;
+
+ public static void main(String[] args) throws Exception {
+ System.loadLibrary(args[0]);
+
+ File file = null;
+ File appDir = null;
+ File profileDir = null;
+ File profileFile = null;
+ try {
+ // We don't know where we have rights to create the code_cache. So create
+ // a dummy temporary file and get its parent directory. That will serve as
+ // the app directory.
+ file = createTempFile();
+ appDir = new File(file.getParent(), APP_DIR_PREFIX + file.getName());
+ appDir.mkdir();
+ profileDir = new File(appDir, CODE_CACHE);
+ profileDir.mkdir();
+
+ // Registering the app info will set the profile file name.
+ VMRuntime.registerAppInfo(PKG_NAME, appDir.getPath());
+
+ // Make sure the hot methods are jitted.
+ Main m = new Main();
+ OtherDex o = new OtherDex();
+ for (int i = 0; i < JIT_INVOCATION_COUNT; i++) {
+ m.hotMethod();
+ o.hotMethod();
+ }
+
+ // Updating the process state to BACKGROUND will trigger profile saving.
+ VMRuntime.updateProcessState(PROFILE_BACKGROUND);
+
+ // Check that the profile file exists.
+ profileFile = new File(profileDir, PROFILE_FILE);
+ if (!profileFile.exists()) {
+ throw new RuntimeException("No profile file found");
+ }
+ // Dump the profile file.
+ // We know what methods are hot and we compare with the golden `expected` output.
+ System.out.println(getProfileInfoDump(profileFile.getPath()));
+ } finally {
+ if (file != null) {
+ file.delete();
+ }
+ if (profileFile != null) {
+ profileFile.delete();
+ }
+ if (profileDir != null) {
+ profileDir.delete();
+ }
+ if (appDir != null) {
+ appDir.delete();
+ }
+ }
+ }
+
+ private static class VMRuntime {
+ private static final Method registerAppInfoMethod;
+ private static final Method updateProcessStateMethod;
+ private static final Method getRuntimeMethod;
+ static {
+ try {
+ Class c = Class.forName("dalvik.system.VMRuntime");
+ registerAppInfoMethod = c.getDeclaredMethod("registerAppInfo",
+ String.class, String.class, String.class);
+ updateProcessStateMethod = c.getDeclaredMethod("updateProcessState", Integer.TYPE);
+ getRuntimeMethod = c.getDeclaredMethod("getRuntime");
+ } catch (Exception e) {
+ throw new RuntimeException(e);
+ }
+ }
+
+ public static void registerAppInfo(String pkgName, String appDir) throws Exception {
+ registerAppInfoMethod.invoke(null, pkgName, appDir, null);
+ }
+ public static void updateProcessState(int state) throws Exception {
+ Object runtime = getRuntimeMethod.invoke(null);
+ updateProcessStateMethod.invoke(runtime, state);
+ }
+ }
+
+ static native String getProfileInfoDump(
+ String filename);
+
+ private static File createTempFile() throws Exception {
+ try {
+ return File.createTempFile(TEMP_FILE_NAME_PREFIX, TEMP_FILE_NAME_SUFFIX);
+ } catch (IOException e) {
+ System.setProperty("java.io.tmpdir", "/data/local/tmp");
+ try {
+ return File.createTempFile(TEMP_FILE_NAME_PREFIX, TEMP_FILE_NAME_SUFFIX);
+ } catch (IOException e2) {
+ System.setProperty("java.io.tmpdir", "/sdcard");
+ return File.createTempFile(TEMP_FILE_NAME_PREFIX, TEMP_FILE_NAME_SUFFIX);
+ }
+ }
+ }
+}