git: openjdk/jdk11u-dev: 8268893: jcmd to trim the glibc heap

[Thomas Stuefe]

Changeset: c249ca92
Author:    Thomas Stuefe <stuefe at openjdk.org>
Date:      2022-09-07 13:27:30 +0000
URL:       https://git.openjdk.org/jdk11u-dev/commit/c249ca92e5676e0e93c1391be1e0541cf3945c5f

8268893: jcmd to trim the glibc heap

Reviewed-by: clanger
Backport-of: 6096dd9765eaf280890f65c0ff1ab64864b9316a

! src/hotspot/os/linux/os_linux.cpp
! src/hotspot/os/linux/os_linux.hpp
+ src/hotspot/os/linux/trimCHeapDCmd.cpp
+ src/hotspot/os/linux/trimCHeapDCmd.hpp
! src/hotspot/share/services/diagnosticCommand.cpp
+ test/hotspot/jtreg/serviceability/dcmd/vm/TrimLibcHeapTest.java