On Mon, 16 Nov 2020 23:00:05 GMT, Alex Menkov <amen...@openjdk.org> wrote:
> OperatingSystemMXBean was changed in jdk14 (see JDK-8226575): > New methods getTotalMemorySize and getFreeMemorySize were added, old > getTotalPhysicalMemorySize and getFreePhysicalMemorySize were deprecated. > > The fix adds fallbacks for the values (i.e. if new methods fail, jconsole > calls old methods) src/jdk.jconsole/share/classes/sun/tools/jconsole/SummaryTab.java line 268: > 266: > sunOSMBean::getTotalPhysicalMemorySize), > 267: > tryToGet(sunOSMBean::getFreeMemorySize, > 268: > sunOSMBean::getFreePhysicalMemorySize), What happens if/when `getTotalPhysicalMemorySize()` and `getFreePhysicalMemorySize()` are removed. This code will fail to compile, right? I guess at that point the fix would be to try the new API, and if it throws an exception, then just use -1. In other words, there would be no way to get the value from older JVMs. ------------- PR: https://git.openjdk.java.net/jdk/pull/1243
