Mercurial > hg > graal-compiler
view test/sanity/WBApi.java @ 5963:64bf7c8270cb
7147724: G1: hang in SurrogateLockerThread::manipulatePLL
Summary: Attempting to initiate a marking cycle when allocating a humongous object can, if a marking cycle is successfully initiated by another thread, result in the allocating thread spinning until the marking cycle is complete. Eliminate a deadlock between the main ConcurrentMarkThread, the SurrogateLocker thread, the VM thread, and a mutator thread waiting on the SecondaryFreeList_lock (while free regions are going to become available) by not manipulating the pending list lock during the prologue and epilogue of the cleanup pause.
Reviewed-by: brutisso, jcoomes, tonyp
author | johnc |
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date | Mon, 12 Mar 2012 14:59:00 -0700 |
parents | 2d503de963b3 |
children | 1b0dc9f87e75 |
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/* * @test WBApi * @summary verify that whitebox functions can be linked and executed * @run compile -J-XX:+UnlockDiagnosticVMOptions -J-XX:+WhiteBoxAPI WBApi.java * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI WBApi */ import sun.hotspot.WhiteBox; public class WBApi { public static void main(String... args) { System.out.printf("args at: %x\n",WhiteBox.getWhiteBox().getObjectAddress(args)); } }