RFR: 6478546: FileInputStream.read() throws OutOfMemoryError when there is plenty available

[Alan Bateman]

On Thu, 14 Apr 2022 01:40:50 GMT, Brian Burkhalter <bpb at openjdk.org> wrote:

> Modify native multi-byte read-write code used by the `java.io` classes to limit the size of the allocated native buffer thereby decreasing off-heap memory footprint and increasing throughput.

src/java.base/share/native/libjava/io_util.c line 133:

> 131:             if (nread == 0)
> 132:                 nread = -1;
> 133:             break;

Can you prototype doing the loop in Java rather than in native code so that there is less native code to maintain?

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PR: https://git.openjdk.java.net/jdk/pull/8235