Integrated: 8316156: ByteArrayInputStream.transferTo causes MaxDirectMemorySize overflow

Wed Sep 20 20:45:53 UTC 2023

On Thu, 14 Sep 2023 03:05:50 GMT, Brian Burkhalter <bpb at openjdk.org> wrote:

> `ByteArrayInputStream.transferTo` invoked with an `OutputStream` parameter which delegates to a `FileChannel` throws an `OutOfMemoryError` if the length of the `byte[]` wrapped by the `ByteArrayInputStream` exceeds `MaxDirectMemorySize`. This is because `FileChannel.write` uses `IOUtil.write` which creates a temporary direct buffer for writing. If the `byte[]` length is larger than `MaxDirectMemorySize`, then the temporary direct buffer allocation fails with an `OutOfMemoryError`.

This pull request has now been integrated.

Changeset: 5cacf212
Author:    Brian Burkhalter <bpb at openjdk.org>
URL:       https://git.openjdk.org/jdk/commit/5cacf212f066f5694d01f0891adfbe8b38660175
Stats:     83 lines in 2 files changed: 81 ins; 0 del; 2 mod

8316156: ByteArrayInputStream.transferTo causes MaxDirectMemorySize overflow

Reviewed-by: alanb

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PR: https://git.openjdk.org/jdk/pull/15733