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https://github.com/PaperMC/Velocity.git
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31 Zeilen
1.6 KiB
Markdown
31 Zeilen
1.6 KiB
Markdown
# velocity-natives
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This directory contains native acceleration code for Velocity, along with
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traditional Java fallbacks.
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## Compression
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* **Supported platforms**: Linux x86_64 and aarch64, with Java 11 `ByteBuffer` API support as a fallback.
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Compiled on CentOS 7.
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* **Rationale**: Using a native zlib wrapper, we can avoid multiple trips into Java just to copy memory around.
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## Encryption
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* **Supported platforms**: Linux x86_64 (OpenSSL 1.0.x and OpenSSL 1.1.x) and aarch64 (OpenSSL 1.1.x only)
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* **Rationale**: Using a C library for encryption means we can limit memory copies. Prior to Java 7, this was the only
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way to use AES-NI extensions on modern processors, but this is less important since JDK 8 has native support.
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* OpenSSL is not included in Velocity. Every distribution provides it now. To deal with ABI incompatibilities,
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the native library (which only calls into OpenSSL and contains no cryptographic code) are available for
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CentOS 7 (OpenSSL 1.0.0-based) and Debian 9 (OpenSSL 1.1.0-based) to provide the widest, most reasonable
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compatibility with most modern distributions.
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## OS support
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The natives intend to have the widest possible range of compatibility with modern Linux distributions
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(defined as those being released in or after 2014).
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In theory, these libraries can be compiled for any Unix-like system (in the past, we supported macOS),
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but interest in other systems is minimal at best, thus we focus on Linux x86_64 and aarch64 as they
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are commonly used platforms.
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Alpine Linux support is on a "best-effort" basis only. Using `apk add libc6-compat` may enable native support. |