Add a hidden flag which allows us to set the size of the legacy globbing thread pool.

--
MOS_MIGRATED_REVID=94236393

1 files changed, 10 insertions, 1 deletions

diff --git a/src/main/java/com/google/devtools/build/lib/packages/PackageFactory.java b/src/main/java/com/google/devtools/build/lib/packages/PackageFactory.java
index 4d7b71f19b..02c7f03d1f 100644
--- a/src/main/java/com/google/devtools/build/lib/packages/PackageFactory.java
+++ b/src/main/java/com/google/devtools/build/lib/packages/PackageFactory.java
@@ -366,7 +366,7 @@ public final class PackageFactory {
     globalEnv = newGlobalEnvironment();
     threadPool = new ThreadPoolExecutor(100, 100, 3L, TimeUnit.SECONDS,
         new LinkedBlockingQueue<Runnable>(),
-        new ThreadFactoryBuilder().setNameFormat("PackageFactory %d").build());
+        new ThreadFactoryBuilder().setNameFormat("Legacy globber %d").build());
     // Do not consume threads when not in use.
     threadPool.allowCoreThreadTimeOut(true);
     this.environmentExtensions = ImmutableList.copyOf(environmentExtensions);
@@ -388,6 +388,15 @@ public final class PackageFactory {
   }
 
   /**
+   * Sets the max number of threads to use for globbing.
+   */
+  public void setGlobbingThreads(int globbingThreads) {
+    threadPool.setCorePoolSize(globbingThreads);
+    threadPool.setMaximumPoolSize(globbingThreads);
+  }
+
+
+  /**
    * Returns the static environment initialized once and shared by all packages
    * created by this factory. No updates occur to this environment once created.
    */