jmx-dev RFR: 8290180: Convert com/sun/management/UnixOperatingSystemMXBean/GetOpenFileDescriptorCount.sh to jtreg java version

[Leonid Mesnik]

On Thu, 14 Jul 2022 21:56:57 GMT, Bill Huang <duke at openjdk.org> wrote:

> This is a task to convert shell tests to Java tests. The shell scripts to be removed are responsible for compiling Java files and running the tests on Linux systems. This functionality can be achieved with JTReg tag @requires (os.family=="linux").

test/jdk/com/sun/management/UnixOperatingSystemMXBean/GetMaxFileDescriptorCount.java line 29:

> 27:  * @summary Basic unit test of UnixOperatingSystemMXBean.getMaxFileDescriptorCount()
> 28:  * @author  Steve Bohne
> 29:  * @requires (os.family=="linux")

please add spaces, braces are not required, see examples in jtreg tests
@requires os.family == "linux"

test/jdk/com/sun/management/UnixOperatingSystemMXBean/GetMaxFileDescriptorCount.java line 31:

> 29:  * @requires (os.family=="linux")
> 30:  *
> 31:  * @run main/othervm GetMaxFileDescriptorCount

is othervm required here?

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PR: https://git.openjdk.org/jdk/pull/9503