hg: jdk/jdk11: 8209670: CompilerThread releasing code buffer in destructor is unsafe

[tobias.hartmann at oracle.com]

Changeset: d2137bd1e57d
Author:    thartmann
Date:      2018-08-21 17:47 +0200
URL:       http://hg.openjdk.java.net/jdk/jdk11/rev/d2137bd1e57d

8209670: CompilerThread releasing code buffer in destructor is unsafe
Summary: Don't free temporary code buffers in compiler thread destructor to avoid interference with safepoint code.
Reviewed-by: kvn, dholmes, zgu

! src/hotspot/share/compiler/compileBroker.cpp
! src/hotspot/share/runtime/thread.cpp