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add option to prefer java #219

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add option to prefer java #219

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9e7b4aa
https://github.com/lz4/lz4-java/issues/218 add option to prefer java …
subes Apr 10, 2024
dea83ea
fix condition for prefer native
subes Apr 10, 2024
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10 changes: 8 additions & 2 deletions src/java/net/jpountz/lz4/LZ4Factory.java
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Original file line number Diff line number Diff line change
Expand Up @@ -56,10 +56,16 @@ private static LZ4Factory instance(String impl) {
}
}

private static final boolean PREFER_NATIVE;
private static LZ4Factory NATIVE_INSTANCE,
JAVA_UNSAFE_INSTANCE,
JAVA_SAFE_INSTANCE;

static {
final String preferNativeStr = System.getProperty("net.jpountz.lz4.PREFER_NATIVE");
PREFER_NATIVE = preferNativeStr == null || Boolean.valueOf(preferNativeStr);
}

/**
* Returns a {@link LZ4Factory} instance that returns compressors and
* decompressors that are native bindings to the original C library.
Expand Down Expand Up @@ -160,8 +166,8 @@ public static LZ4Factory fastestJavaInstance() {
* @return the fastest available {@link LZ4Factory} instance
*/
public static LZ4Factory fastestInstance() {
if (Native.isLoaded()
|| Native.class.getClassLoader() == ClassLoader.getSystemClassLoader()) {
if (PREFER_NATIVE && (Native.isLoaded()
|| Native.class.getClassLoader() == ClassLoader.getSystemClassLoader())) {
try {
return nativeInstance();
} catch (Throwable t) {
Expand Down