commit 58cbfd9e7a8b59918164209faa1b4ef53d4f8eee
author Ryan Prichard <rprichard@google.com> Tue Feb 04 15:46:15 2020 -0800
committer Ryan Prichard <rprichard@google.com> Mon Mar 09 14:23:24 2020 -0700
tree 7b9428a231ad5d6af10abea554a77c928741b5df
parent 1082315ddf69e5bcb8ad0e95e1fd55d86e375e64

Rewrite __cxa_atexit / __cxa_finalize

Simplify:
 - Use a single memory-mapped region to hold the table of destructors.
   Double its capacity each time it is expanded.
 - Add a recompaction pass at the end of __cxa_finalize that shifts
   entries forward and uses madvise to clean pages.

Bug: http://b/148055738
Test: bionic-unit-tests
Change-Id: Ieb9da2b88640a8a5277d217b43826b5b7e246781
(cherry picked from commit afa983c8d44400d45c1f0e2b8e90a8be04acf6f7)

libc/Android.bp

diff --git a/libc/Android.bp b/libc/Android.bp
index 80b157a..9a2773d 100644
--- a/libc/Android.bp
+++ b/libc/Android.bp
@@ -1225,7 +1225,7 @@
         // so we can't include them in libc_ndk.a.
         "bionic/__cxa_thread_atexit_impl.cpp",
         "bionic/android_unsafe_frame_pointer_chase.cpp",
-        "stdlib/atexit.c",
+        "bionic/atexit.cpp",
         "bionic/fork.cpp",
     ],