xxhash hashing. This package supports both block hashing via +{@link net.jpountz.xxhash.XXHash32} and streaming hashing via +{@link net.jpountz.xxhash.StreamingXXHash32}. Have a look at +{@link net.jpountz.xxhash.XXHashFactory} to know how to get instances of these +interfaces.
+ +Streaming hashing is a little slower but doesn't require to load the whole +stream into memory.
+ +Sample block usage:
+ +
+ XXHashFactory factory = XXHashFactory.fastestInstance();
+
+ byte[] data = "12345345234572".getBytes("UTF-8");
+
+ XXHash32 hash32 = factory.hash32();
+ int seed = 0x9747b28c; // used to initialize the hash value, use whatever
+ // value you want, but always the same
+ int hash = hash32.hash(data, 0, data.length, seed);
+
+
+Sample streaming usage:
+ +
+ XXHashFactory factory = XXHashFactory.fastestInstance();
+
+ byte[] data = "12345345234572".getBytes("UTF-8");
+ ByteArrayInputStream in = new ByteArrayInputStream(data);
+
+ int seed = 0x9747b28c; // used to initialize the hash value, use whatever
+ // value you want, but always the same
+ StreamingXXHash32 hash32 = factory.newStreamingHash32(seed);
+ byte[] buf = new byte[8]; // for real-world usage, use a larger buffer, like 8192 bytes
+ for (;;) {
+ int read = in.read(buf);
+ if (read == -1) {
+ break;
+ }
+ hash32.update(buf, 0, read);
+ }
+ int hash = hash32.getValue();
+
+
+
+