tree a70bc3cffcaf763e4951c96918bc6f8b25a472b3
parent 147a911636402f2658ce60bd3ad62eb197b00f74
author Alex Light <allight@google.com> 1563491321 -0700
committer Alex Light <allight@google.com> 1564681827 +0000

Add resize arrays JVMTI extension

As a prototype for more general object replacement functionality add a
new JVMTI extension that allows one to change the size of arrays. This
extension is 'com.android.art.heap.change_array_size'. As far as any
JVMTI agent, JNI or Java Language code can observer this extension
atomically replaces every reference (strong and weak, global and
local, etc.) with a newly allocated array with the same contents but a
different length. Internally a whole new array will be created then
the old array will have its contents (including lock-word) copied and
all references to the old array will be replaced with the new array.

Test: ./test.py --host
Bug: 134162467

Change-Id: I92a0beabb02e0c92c8c8f9639836014ff1266878