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b3bd773fea
libdeflate is significantly faster than vanilla zlib, zlib-ng, and Cloudflare zlib. It is also MIT-licensed (so no licensing concerns). In addition, it simplifies a lot of the native code (something that's been tricky to get right). While we're at it, I have also taken the time to fine-time compression in Velocity in general. Thanks to this work, native compression only requires one JNI call, an improvement from the more than 2 (sometimes up to 5) that were possible before. This optimization also extends to the existing Java compressors, though they require potentially two JNI calls.
44 lines
1.3 KiB
C
44 lines
1.3 KiB
C
#include <assert.h>
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#include <jni.h>
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#include <stdbool.h>
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#include <stdlib.h>
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#include <libdeflate.h>
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#include "jni_util.h"
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JNIEXPORT jlong JNICALL
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Java_com_velocitypowered_natives_compression_NativeZlibDeflate_init(JNIEnv *env,
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jobject obj,
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jint level)
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{
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struct libdeflate_compressor *compressor = libdeflate_alloc_compressor(level);
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if (compressor == NULL) {
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// Out of memory!
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throwException(env, "java/lang/OutOfMemoryError", "libdeflate allocate compressor");
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return 0;
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}
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return (jlong) compressor;
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}
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JNIEXPORT void JNICALL
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Java_com_velocitypowered_natives_compression_NativeZlibDeflate_free(JNIEnv *env,
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jobject obj,
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jlong ctx)
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{
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libdeflate_free_compressor((struct libdeflate_compressor *) ctx);
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}
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JNIEXPORT jboolean JNICALL
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Java_com_velocitypowered_natives_compression_NativeZlibDeflate_process(JNIEnv *env,
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jobject obj,
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jlong ctx,
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jlong sourceAddress,
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jint sourceLength,
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jlong destinationAddress,
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jint destinationLength,
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jboolean finish)
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{
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struct libdeflate_compressor *compressor = (struct libdeflate_compressor *) ctx;
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size_t produced = libdeflate_zlib_compress(compressor, (void *) sourceAddress, sourceLength,
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(void *) destinationAddress, destinationLength);
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return (jlong) produced;
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} |