commit 05be2f52fd7af9a02d00e58311bbfea9a0a19821
author Lorenzo Colitti <lorenzo@google.com> Sun Jun 02 13:24:21 2024 +0900
committer Lorenzo Colitti <lorenzo@google.com> Wed Jun 05 06:48:27 2024 +0000
tree ca5ce5857d3c508b3409e0e273d01c395f30c392
parent 05a3e88e6253e64ca912f287d36b299690aad139

Add a SingleWriterBpfMap class that caches reads.

This should speed up BPF map reads by returning the cached value
without needing a system call.

Bug: 343166906
Test: added parameterization to BpfMapTest
Change-Id: Ifc0c5baa80f6d46356434c249749e87fe2f9ec6c

staticlibs/Android.bp

diff --git a/staticlibs/Android.bp b/staticlibs/Android.bp
index ede6d3f..e2834b0 100644
--- a/staticlibs/Android.bp
+++ b/staticlibs/Android.bp
@@ -135,6 +135,7 @@
         "device/com/android/net/module/util/BpfUtils.java",
         "device/com/android/net/module/util/IBpfMap.java",
         "device/com/android/net/module/util/JniUtil.java",
+        "device/com/android/net/module/util/SingleWriterBpfMap.java",
         "device/com/android/net/module/util/TcUtils.java",
     ],
     sdk_version: "module_current",