From 61c5f8e68b8a2718307dfca1cbebee79fa255f4e Mon Sep 17 00:00:00 2001
From: Steven Moreland <smoreland@google.com>
Date: Wed, 4 Mar 2020 13:07:53 -0800
Subject: Clarify getCallingPid for oneway transactions.

Seems this frequent gotcha is not documented here.

Bug: N/A
Test: N/A
Change-Id: Ia186cd8b9945b75b8342b0750713d8667cfef064
---
 core/java/android/os/Binder.java | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'core/java')

diff --git a/core/java/android/os/Binder.java b/core/java/android/os/Binder.java
index 2fa75f16a546..f2cf4e3981d3 100644
--- a/core/java/android/os/Binder.java
+++ b/core/java/android/os/Binder.java
@@ -260,6 +260,8 @@ public class Binder implements IBinder {
      * system services to determine its identity and check permissions.
      * If the current thread is not currently executing an incoming transaction,
      * then its own pid is returned.
+     *
+     * Warning: oneway transactions do not receive PID.
      */
     @CriticalNative
     public static final native int getCallingPid();
-- 
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