8381670: Revert the changes to GZIPInputStream related to InputStream.available() usage

[jyma22]

Backporting JDK-8381670: Revert the changes to GZIPInputStream related to InputStream.available() usage.
This reverts commit fcbf863f4b7 due to performance regression in GZIPInputStream.
Tested on x64 with make test TEST=test/jdk/java/util/zip/GZIP

---

• I confirm that I make this contribution in accordance with the OpenJDK Interim AI Policy.

---

Progress

• Change must be properly reviewed (1 review required, with at least 1 Reviewer)
• Change must not contain extraneous whitespace
• Commit message must refer to an issue
• JDK-8381670 needs maintainer approval
• Change requires CSR request JDK-8381671 to be approved

Issues

• JDK-8381670: Revert the changes to GZIPInputStream related to InputStream.available() usage (Bug - P3 - Requested)
• JDK-8381671: Revert the changes to GZIPInputStream related to InputStream.available() usage (CSR)

Reviewing

Using git

Checkout this PR locally:
$ git fetch https://git.openjdk.org/jdk21u-dev.git pull/2853/head:pull/2853
$ git checkout pull/2853

Update a local copy of the PR:
$ git checkout pull/2853
$ git pull https://git.openjdk.org/jdk21u-dev.git pull/2853/head

Using Skara CLI tools

Checkout this PR locally:
$ git pr checkout 2853

View PR using the GUI difftool:
$ git pr show -t 2853

Using diff file

Download this PR as a diff file:
https://git.openjdk.org/jdk21u-dev/pull/2853.diff

Using Webrev

Link to Webrev Comment

[bridgekeeper]

👋 Welcome back jyma22! A progress list of the required criteria for merging this PR into master will be added to the body of your pull request. There are additional pull request commands available for use with this pull request.

[openjdk]

❗ This change is not yet ready to be integrated.
See the Progress checklist in the description for automated requirements.

[mlbridge]

Webrevs

• 00: Full (ce8804ec)

[jyma22]

/approval request for backport of JDK-8381670: Revert the changes to GZIPInputStream related to InputStream.available() usage. This fixes a performance regression in GZIPInputStream and the CSR was approved. This pull request is not clean because the tip reverted 2 commits and only one needed to be reverted in 21

[openjdk]

This backport pull request has now been updated with issue from the original commit.

[openjdk]

@jyma22
8381670: The approval request has been created successfully.