commit b49996d8e2658ea2d62cd19d28edd70b2b22f605
author Narayan Kamath <narayan@google.com> Mon Feb 06 20:24:08 2017 +0000
committer Narayan Kamath <narayan@google.com> Tue Feb 14 16:20:45 2017 +0000
tree c5a069107735b07a623e8cb546968a56072afeaf
parent 027d72ebe65750828c547a1a2a39130d506064af

Zygote: Reset niceness if lazy preloading is enabled.

By definition, the zygote in question is lower priority if lazy
preloading is enabled. We therefore reset the zygote process'
niceness to 0 as soon as it comes up, rather than having it stick
around as a higher priority process until we eventually ask it
to load the default set of resources.

Test: manual.

Change-Id: I3ccfc0e7c3fdebf5f798d90b53140a554bf64c20

core/java/com/android/internal/os/Zygote.java

diff --git a/core/java/com/android/internal/os/Zygote.java b/core/java/com/android/internal/os/Zygote.java
index 59416dd..fa71a62 100644
--- a/core/java/com/android/internal/os/Zygote.java
+++ b/core/java/com/android/internal/os/Zygote.java
@@ -173,6 +173,10 @@
         VM_HOOKS.postForkChild(debugFlags, isSystemServer, instructionSet);
     }
 
+    /**
+     * Resets this process' priority to the default value (0).
+     */
+    native static void nativeResetNicePriority();
 
     /**
      * Executes "/system/bin/sh -c <command>" using the exec() system call.