RFR: JDK-8327444: simplify RESTARTABLE macro usage in JDK codebase

[Alan Bateman]

On Wed, 6 Mar 2024 09:26:25 GMT, Matthias Baesken <mbaesken at openjdk.org> wrote:

> We define the RESTARTABLE macro again and again at a lot of places in the JDK native codebase. This could be centralized to avoid repeating it again and again !

src/java.base/share/native/libjava/jni_util.h line 243:

> 241:   } while((_result == -1) && (errno == EINTR)); \
> 242: } while(0)
> 243: 

jni_util.h is for all platforms so not the right place for a Unix specific macro. We need think where the right place for this, might have to introduce a jni_util_md.h.

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PR Review Comment: https://git.openjdk.org/jdk/pull/18132#discussion_r1514555111