Enable thread annotations for parameters

This allows us to indicate that an argument (especially a lambda or
method reference) will be invoked on a separate thread. This will be
used to improve interprocedural thread annotation checks.

Test: n/a
Change-Id: I035733f8bfb1ba47f0995f38783681d105661dc5

1 files changed, 2 insertions, 1 deletions

diff --git a/core/java/android/annotation/MainThread.java b/core/java/android/annotation/MainThread.java
index d15cfcd94ba7..556fdb4e7742 100644
--- a/core/java/android/annotation/MainThread.java
+++ b/core/java/android/annotation/MainThread.java
@@ -17,6 +17,7 @@ package android.annotation;
 
 import static java.lang.annotation.ElementType.CONSTRUCTOR;
 import static java.lang.annotation.ElementType.METHOD;
+import static java.lang.annotation.ElementType.PARAMETER;
 import static java.lang.annotation.ElementType.TYPE;
 import static java.lang.annotation.RetentionPolicy.SOURCE;
 
@@ -44,6 +45,6 @@ import java.lang.annotation.Target;
  * @hide
  */
 @Retention(SOURCE)
-@Target({METHOD,CONSTRUCTOR,TYPE})
+@Target({METHOD,CONSTRUCTOR,TYPE,PARAMETER})
 public @interface MainThread {
 }