Adds compile action for aapt2: Aapt2ResourcePackagingAction

Adds a ManifestContainer interface to centralize the types that provide manifests.
Adds PackagedResources to represent a linked dexless resource apk

RELNOTES: None
PiperOrigin-RevId: 166193049

1 files changed, 16 insertions, 0 deletions

diff --git a/src/tools/android/java/com/google/devtools/build/android/ExecutorServiceCloser.java b/src/tools/android/java/com/google/devtools/build/android/ExecutorServiceCloser.java
index 374c8a5db0..cc99342ddf 100644
--- a/src/tools/android/java/com/google/devtools/build/android/ExecutorServiceCloser.java
+++ b/src/tools/android/java/com/google/devtools/build/android/ExecutorServiceCloser.java
@@ -14,9 +14,11 @@
 package com.google.devtools.build.android;
 
 import com.google.common.util.concurrent.ListeningExecutorService;
+import com.google.common.util.concurrent.MoreExecutors;
 import java.io.Closeable;
 import java.io.IOException;
 import java.util.List;
+import java.util.concurrent.Executors;
 
 /** Shutdowns and verifies that no tasks are running in the executor service. */
 final class ExecutorServiceCloser implements Closeable {
@@ -37,4 +39,18 @@ final class ExecutorServiceCloser implements Closeable {
   public static Closeable createWith(ListeningExecutorService executorService) {
     return new ExecutorServiceCloser(executorService);
   }
+
+  /**
+   * Creates a {@link ListeningExecutorService} with a sane sized thread pool based on our current
+   * metrics.
+   */
+  public static ListeningExecutorService createDefaultService() {
+    // The reported availableProcessors may be higher than the actual resources
+    // (on a shared system). On the other hand, a lot of the work is I/O, so it's not completely
+    // CPU bound. As a compromise, divide by 2 the reported availableProcessors.
+    int numThreads = Math.max(1, Runtime.getRuntime().availableProcessors() / 2);
+    final ListeningExecutorService executorService =
+        MoreExecutors.listeningDecorator(Executors.newFixedThreadPool(numThreads));
+    return executorService;
+  }
 }