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Revert "[WIP] Add bit-shuffling interfaces to improve LZ performance"

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Taro L. Saito 2017-01-19 10:57:04 -08:00 committed by GitHub
parent 1ef5cce1b5
commit e08d784358
15 changed files with 115 additions and 608 deletions
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83
Makefile
View File

@ -7,50 +7,17 @@ SBT:=./sbt
all: snappy all: snappy
SNAPPY_OUT:=$(TARGET)/$(snappy)-$(os_arch) SNAPPY_OUT:=$(TARGET)/$(snappy)-$(os_arch)
SNAPPY_ARCHIVE:=$(TARGET)/snappy-$(SNAPPY_VERSION).tar.gz SNAPPY_ARCHIVE:=$(TARGET)/snappy-$(VERSION).tar.gz
SNAPPY_CC:=snappy-sinksource.cc snappy-stubs-internal.cc snappy.cc SNAPPY_CC:=snappy-sinksource.cc snappy-stubs-internal.cc snappy.cc
SNAPPY_SRC_DIR:=$(TARGET)/snappy-$(SNAPPY_VERSION) SNAPPY_SRC_DIR:=$(TARGET)/snappy-$(VERSION)
SNAPPY_SRC:=$(addprefix $(SNAPPY_SRC_DIR)/,$(SNAPPY_CC)) SNAPPY_SRC:=$(addprefix $(SNAPPY_SRC_DIR)/,$(SNAPPY_CC))
SNAPPY_OBJ:=$(addprefix $(SNAPPY_OUT)/,$(patsubst %.cc,%.o,$(SNAPPY_CC)) SnappyNative.o)
SNAPPY_GIT_UNPACKED:=$(TARGET)/snappy-git-extracted.log
SNAPPY_GIT_REPO_URL:=https://github.com/google/snappy SNAPPY_GIT_REPO_URL:=https://github.com/google/snappy
SNAPPY_GIT_REV:=2b9152d9c5bed71dffb7f7f6c7a3ec48b058ff2d # 1.1.3 with autogen.sh fix SNAPPY_GIT_REV:=2b9152d9c5bed71dffb7f7f6c7a3ec48b058ff2d # 1.1.3 with autogen.sh fix
SNAPPY_UNPACKED:=$(TARGET)/snappy-extracted.log
SNAPPY_GIT_UNPACKED:=$(TARGET)/snappy-git-extracted.log
BITSHUFFLE_ARCHIVE:=$(TARGET)/bitshuffle-$(BITSHUFFLE_VERSION).tar.gz CXXFLAGS:=$(CXXFLAGS) -I$(SNAPPY_SRC_DIR)
BITSHUFFLE_C:=bitshuffle_core.c iochain.c
BITSHUFFLE_SRC_DIR:=$(TARGET)/bitshuffle-$(BITSHUFFLE_VERSION)/src
BITSHUFFLE_SRC:=$(addprefix $(BITSHUFFLE_SRC_DIR)/,$(BITSHUFFLE_C))
BITSHUFFLE_UNPACKED:=$(TARGET)/bitshuffle-extracted.log
$(BITSHUFFLE_ARCHIVE):
@mkdir -p $(@D)
curl -L -o$@ https://github.com/kiyo-masui/bitshuffle/archive/$(BITSHUFFLE_VERSION).tar.gz
$(BITSHUFFLE_UNPACKED): $(BITSHUFFLE_ARCHIVE)
$(TAR) xvfz $< -C $(TARGET)
touch $@
$(BITSHUFFLE_SRC): $(BITSHUFFLE_UNPACKED)
$(SNAPPY_OUT)/%.o: $(BITSHUFFLE_SRC_DIR)/%.c
@mkdir -p $(@D)
$(CXX) $(CXXFLAGS) $(CXXFLAGS_BITSHUFFLE) -c $< -o $@
SNAPPY_OBJ:=$(addprefix $(SNAPPY_OUT)/,$(patsubst %.cc,%.o,$(SNAPPY_CC)) $(patsubst %.c,%.o,$(BITSHUFFLE_C)) SnappyNative.o BitShuffleNative.o)
CXXFLAGS:=$(CXXFLAGS) -I$(SNAPPY_SRC_DIR) -I$(BITSHUFFLE_SRC_DIR)
ifndef CXXFLAGS_BITSHUFFLE
ifeq ($(OS_NAME)-$(OS_ARCH),Linux-x86_64)
# SSE2 is supported in all the x86_64 platforms and AVX2 is only supported
# in the small part of them. gcc in linux/x86_64 typically enables SSE2 by default though,
# we explicitly set flags below to make this precondition clearer.
CXXFLAGS_BITSHUFFLE:=-U__AVX2__ -msse2
else
# Undefined macros to generate a platform-independent binary
CXXFLAGS_BITSHUFFLE:=-U__AVX2__ -U__SSE2__
endif
endif
ifeq ($(OS_NAME),SunOS) ifeq ($(OS_NAME),SunOS)
TAR:= gtar TAR:= gtar
@ -60,12 +27,7 @@ endif
$(SNAPPY_ARCHIVE): $(SNAPPY_ARCHIVE):
@mkdir -p $(@D) @mkdir -p $(@D)
curl -L -o$@ https://github.com/google/snappy/releases/download/$(SNAPPY_VERSION)/snappy-$(SNAPPY_VERSION).tar.gz curl -L -o$@ https://github.com/google/snappy/releases/download/$(VERSION)/snappy-$(VERSION).tar.gz
$(SNAPPY_UNPACKED): $(SNAPPY_ARCHIVE)
$(TAR) xvfz $< -C $(TARGET)
touch $@
cd $(SNAPPY_SRC_DIR) && ./configure
$(SNAPPY_GIT_UNPACKED): $(SNAPPY_GIT_UNPACKED):
rm -rf $(SNAPPY_SRC_DIR) rm -rf $(SNAPPY_SRC_DIR)
@ -75,35 +37,25 @@ $(SNAPPY_GIT_UNPACKED):
cd $(SNAPPY_SRC_DIR) && ./autogen.sh && ./configure cd $(SNAPPY_SRC_DIR) && ./autogen.sh && ./configure
touch $@ touch $@
jni-header: $(SRC)/org/xerial/snappy/SnappyNative.h $(SRC)/org/xerial/snappy/BitShuffleNative.h jni-header: $(SRC)/org/xerial/snappy/SnappyNative.h
$(TARGET)/jni-classes/org/xerial/snappy/SnappyNative.class: $(SRC)/org/xerial/snappy/SnappyNative.java $(TARGET)/jni-classes/org/xerial/snappy/SnappyNative.class : $(SRC)/org/xerial/snappy/SnappyNative.java
@mkdir -p $(TARGET)/jni-classes @mkdir -p $(TARGET)/jni-classes
$(JAVAC) -source 1.6 -target 1.6 -d $(TARGET)/jni-classes -sourcepath $(SRC) $< $(JAVAC) -source 1.6 -target 1.6 -d $(TARGET)/jni-classes -sourcepath $(SRC) $<
$(SRC)/org/xerial/snappy/SnappyNative.h: $(TARGET)/jni-classes/org/xerial/snappy/SnappyNative.class $(SRC)/org/xerial/snappy/SnappyNative.h: $(TARGET)/jni-classes/org/xerial/snappy/SnappyNative.class
$(JAVAH) -force -classpath $(TARGET)/jni-classes -o $@ org.xerial.snappy.SnappyNative $(JAVAH) -force -classpath $(TARGET)/jni-classes -o $@ org.xerial.snappy.SnappyNative
$(TARGET)/jni-classes/org/xerial/snappy/BitShuffleNative.class: $(SRC)/org/xerial/snappy/BitShuffleNative.java
@mkdir -p $(TARGET)/jni-classes
$(JAVAC) -source 1.6 -target 1.6 -d $(TARGET)/jni-classes -sourcepath $(SRC) $<
$(SRC)/org/xerial/snappy/BitShuffleNative.h: $(TARGET)/jni-classes/org/xerial/snappy/BitShuffleNative.class
$(JAVAH) -force -classpath $(TARGET)/jni-classes -o $@ org.xerial.snappy.BitShuffleNative
$(SNAPPY_SRC): $(SNAPPY_GIT_UNPACKED) $(SNAPPY_SRC): $(SNAPPY_GIT_UNPACKED)
$(SNAPPY_OUT)/%.o: $(SNAPPY_SRC_DIR)/%.cc $(SNAPPY_OUT)/%.o : $(SNAPPY_SRC_DIR)/%.cc
@mkdir -p $(@D) @mkdir -p $(@D)
$(CXX) $(CXXFLAGS) -c $< -o $@ $(CXX) $(CXXFLAGS) -c $< -o $@
$(SNAPPY_OUT)/SnappyNative.o: $(SRC)/org/xerial/snappy/SnappyNative.cpp $(SRC)/org/xerial/snappy/SnappyNative.h $(SNAPPY_OUT)/SnappyNative.o : $(SRC)/org/xerial/snappy/SnappyNative.cpp $(SRC)/org/xerial/snappy/SnappyNative.h
@mkdir -p $(@D) @mkdir -p $(@D)
$(CXX) $(CXXFLAGS) -c $< -o $@ $(CXX) $(CXXFLAGS) -c $< -o $@
$(SNAPPY_OUT)/BitShuffleNative.o: $(SRC)/org/xerial/snappy/BitShuffleNative.cpp $(SRC)/org/xerial/snappy/BitShuffleNative.h
@mkdir -p $(@D)
$(CXX) $(CXXFLAGS) -c $< -o $@
$(SNAPPY_OUT)/$(LIBNAME): $(SNAPPY_OBJ) $(SNAPPY_OUT)/$(LIBNAME): $(SNAPPY_OBJ)
$(CXX) $(CXXFLAGS) -o $@ $+ $(LINKFLAGS) $(CXX) $(CXXFLAGS) -o $@ $+ $(LINKFLAGS)
@ -181,16 +133,17 @@ install-m2:
googlecode-upload: googlecode-lib-upload googlecode-src-upload googlecode-upload: googlecode-lib-upload googlecode-src-upload
googlecode-lib-upload: $(TARGET)/snappy-java-$(SNAPPY_VERSION)-lib.upload googlecode-lib-upload: $(TARGET)/snappy-java-$(VERSION)-lib.upload
googlecode-src-upload: $(TARGET)/snappy-java-$(SNAPPY_VERSION)-src.upload googlecode-src-upload: $(TARGET)/snappy-java-$(VERSION)-src.upload
GOOGLECODE_USER:=leo@xerial.org GOOGLECODE_USER:=leo@xerial.org
$(TARGET)/snappy-java-$(SNAPPY_VERSION)-lib.upload: $(TARGET)/snappy-java-$(VERSION)-lib.upload:
./googlecode_upload.py -s "library for all platforms" -p snappy-java -l "Type-Executable,Featured,OpSys-All" -u "$(GOOGLECODE_USER)" target/snappy-java-$(SNAPPY_VERSION).jar ./googlecode_upload.py -s "library for all platforms" -p snappy-java -l "Type-Executable,Featured,OpSys-All" -u "$(GOOGLECODE_USER)" target/snappy-java-$(VERSION).jar
touch $@ touch $@
$(TARGET)/snappy-java-$(SNAPPY_VERSION)-src.upload: $(TARGET)/snappy-java-$(VERSION)-src.upload:
./googlecode_upload.py -s "source code archive" -p snappy-java -l "Type-Source,OpSys-All" -u "$(GOOGLECODE_USER)" target/snappy-java-$(SNAPPY_VERSION).tar.gz ./googlecode_upload.py -s "source code archive" -p snappy-java -l "Type-Source,OpSys-All" -u "$(GOOGLECODE_USER)" target/snappy-java-$(VERSION).tar.gz
touch $@ touch $@

3
Makefile.common
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@ -31,7 +31,7 @@ else
sep := : sep := :
endif endif
snappy := snappy-$(SNAPPY_VERSION) snappy := snappy-$(VERSION)
jni_md := $(shell find -L "$(JAVA_HOME)" -name jni_md.h | head -1) jni_md := $(shell find -L "$(JAVA_HOME)" -name jni_md.h | head -1)
@ -257,3 +257,4 @@ ifneq ($(jni_include),)
CXXFLAGS := $(CXXFLAGS) -I"$(jni_include)" CXXFLAGS := $(CXXFLAGS) -I"$(jni_include)"
endif endif

6
README.md
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@ -143,12 +143,6 @@ Older snapshots of snappy contain a buggy config.h.in that does not work properl
$ export JAVA_HOME=/usr/lib/jvm/java-1.7.1-ibm-1.7.1.2.10-1jpp.3.el7_0.s390x $ export JAVA_HOME=/usr/lib/jvm/java-1.7.1-ibm-1.7.1.2.10-1jpp.3.el7_0.s390x
$ make USE_GIT=1 GIT_REPO_URL=https://github.com/google/snappy.git GIT_SNAPPY_BRANCH=master IBM_JDK_7=1 $ make USE_GIT=1 GIT_REPO_URL=https://github.com/google/snappy.git GIT_SNAPPY_BRANCH=master IBM_JDK_7=1
## Activating SSE2/AVX2 instructions in BitShuffle
The most of the native libraries that snappy-java contains disable SSE2/AVX2 instructions in terms of portability (SSE2 is enabled only in Linux/x86_64 platforms). To enable AVX2 instructions, you need to compile as follows:
$ make CXXFLAGS_BITSHUFFLE=-mavx2 # -msse2 for SSE2 instructions
## Cross-compiling for other platforms ## Cross-compiling for other platforms
The Makefile contains rules for cross-compiling the native library for other platforms so that the snappy-java JAR can support multiple platforms. For example, to build the native libraries for x86 Linux, x86 and x86-64 Windows, and soft- and hard-float ARM: The Makefile contains rules for cross-compiling the native library for other platforms so that the snappy-java JAR can support multiple platforms. For example, to build the native libraries for x86 Linux, x86 and x86-64 Windows, and soft- and hard-float ARM:

184
src/main/java/org/xerial/snappy/BitShuffle.java
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@ -1,184 +0,0 @@
/*--------------------------------------------------------------------------
* Copyright 2011 Taro L. Saito
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*--------------------------------------------------------------------------*/
//--------------------------------------
// snappy-java Project
//
// BitShuffle.java
// Since: 2016/03/31
//
// $URL$
// $Author$
//--------------------------------------
package org.xerial.snappy;
import java.io.IOException;
public class BitShuffle
{
static {
try {
impl = SnappyLoader.loadBitShuffleApi();
}
catch (Exception e) {
throw new ExceptionInInitializerError(e);
}
}
/**
* An instance of BitShuffleNative
*/
private static BitShuffleNative impl;
/**
* Apply a bit-shuffling filter into the input short array.
*
* @param input
* @return bit-shuffled byte array
* @throws IOException
*/
public static byte[] bitShuffle(short[] input) throws IOException {
byte[] output = new byte[input.length * 2];
int numProcessed = impl.bitShuffle(input, 0, 2, input.length * 2, output, 0);
assert(numProcessed == input.length * 2);
return output;
}
/**
* Apply a bit-shuffling filter into the input int array.
*
* @param input
* @return bit-shuffled byte array
* @throws IOException
*/
public static byte[] bitShuffle(int[] input) throws IOException {
byte[] output = new byte[input.length * 4];
int numProcessed = impl.bitShuffle(input, 0, 4, input.length * 4, output, 0);
assert(numProcessed == input.length * 4);
return output;
}
/**
* Apply a bit-shuffling filter into the input long array.
*
* @param input
* @return bit-shuffled byte array
* @throws IOException
*/
public static byte[] bitShuffle(long[] input) throws IOException {
byte[] output = new byte[input.length * 8];
int numProcessed = impl.bitShuffle(input, 0, 8, input.length * 8, output, 0);
assert(numProcessed == input.length * 8);
return output;
}
/**
* Apply a bit-shuffling filter into the input float array.
*
* @param input
* @return bit-shuffled byte array
* @throws IOException
*/
public static byte[] bitShuffle(float[] input) throws IOException {
byte[] output = new byte[input.length * 4];
int numProcessed = impl.bitShuffle(input, 0, 4, input.length * 4, output, 0);
assert(numProcessed == input.length * 4);
return output;
}
/**
* Apply a bit-shuffling filter into the input double array.
*
* @param input
* @return bit-shuffled byte array
* @throws IOException
*/
public static byte[] bitShuffle(double[] input) throws IOException {
byte[] output = new byte[input.length * 8];
int numProcessed = impl.bitShuffle(input, 0, 8, input.length * 8, output, 0);
assert(numProcessed == input.length * 8);
return output;
}
/**
* Convert the input bit-shuffled byte array into an original short array.
*
* @param input
* @return a short array
* @throws IOException
*/
public static short[] bitUnShuffleShortArray(byte[] input) throws IOException {
short[] output = new short[input.length / 2];
int numProcessed = impl.bitUnShuffle(input, 0, 2, input.length, output, 0);
assert(numProcessed == input.length);
return output;
}
/**
* Convert the input bit-shuffled byte array into an original int array.
*
* @param input
* @return an int array
* @throws IOException
*/
public static int[] bitUnShuffleIntArray(byte[] input) throws IOException {
int[] output = new int[input.length / 4];
int numProcessed = impl.bitUnShuffle(input, 0, 4, input.length, output, 0);
assert(numProcessed == input.length);
return output;
}
/**
* Convert the input bit-shuffled byte array into an original long array.
*
* @param input
* @return a long array
* @throws IOException
*/
public static long[] bitUnShuffleLongArray(byte[] input) throws IOException {
long[] output = new long[input.length / 8];
int numProcessed = impl.bitUnShuffle(input, 0, 8, input.length, output, 0);
assert(numProcessed == input.length);
return output;
}
/**
* Convert the input bit-shuffled byte array into an original float array.
*
* @param input
* @return an float array
* @throws IOException
*/
public static float[] bitUnShuffleFloatArray(byte[] input) throws IOException {
float[] output = new float[input.length / 4];
int numProcessed = impl.bitUnShuffle(input, 0, 4, input.length, output, 0);
assert(numProcessed == input.length);
return output;
}
/**
* Convert the input bit-shuffled byte array into an original double array.
*
* @param input
* @return a double array
* @throws IOException
*/
public static double[] bitUnShuffleDoubleArray(byte[] input) throws IOException {
double[] output = new double[input.length / 8];
int numProcessed = impl.bitUnShuffle(input, 0, 8, input.length, output, 0);
assert(numProcessed == input.length);
return output;
}
}

91
src/main/java/org/xerial/snappy/BitShuffleNative.cpp
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@ -1,91 +0,0 @@
/*--------------------------------------------------------------------------
* Copyright 2011 Taro L. Saito
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*--------------------------------------------------------------------------*/
#include <bitshuffle.h>
#include "BitShuffleNative.h"
inline void throw_exception(JNIEnv *env, jobject self, int errorCode)
{
jclass c = env->FindClass("org/xerial/snappy/SnappyNative");
if(c==0)
return;
jmethodID mth_throwex = env->GetMethodID(c, "throw_error", "(I)V");
if(mth_throwex == 0)
return;
env->CallVoidMethod(self, mth_throwex, (jint) errorCode);
}
/*
* Class: org_xerial_snappy_SnappyNative
* Method: bitShuffle
* Signature: (Ljava/lang/Object;IIILjava/lang/Object;I)I
*/
JNIEXPORT jint JNICALL Java_org_xerial_snappy_BitShuffleNative_bitShuffle
(JNIEnv * env, jobject self, jobject input, jint inputOffset, jint typeSize, jint length, jobject output, jint outputOffset)
{
char* in = (char*) env->GetPrimitiveArrayCritical((jarray) input, 0);
char* out = (char*) env->GetPrimitiveArrayCritical((jarray) output, 0);
if(in == 0 || out == 0) {
// out of memory
if(in != 0) {
env->ReleasePrimitiveArrayCritical((jarray) input, in, 0);
}
if(out != 0) {
env->ReleasePrimitiveArrayCritical((jarray) output, out, 0);
}
throw_exception(env, self, 4);
return 0;
}
int64_t processedBytes = bshuf_bitshuffle(
in + inputOffset, out + outputOffset, (size_t) (length / typeSize), (size_t) typeSize, 0);
env->ReleasePrimitiveArrayCritical((jarray) input, in, 0);
env->ReleasePrimitiveArrayCritical((jarray) output, out, 0);
return (jint) processedBytes;
}
/*
* Class: org_xerial_snappy_SnappyNative
* Method: bitUnShuffle
* Signature: (Ljava/lang/Object;IIILjava/lang/Object;I)I
*/
JNIEXPORT jint JNICALL Java_org_xerial_snappy_BitShuffleNative_bitUnShuffle
(JNIEnv * env, jobject self, jobject input, jint inputOffset, jint typeSize, jint length, jobject output, jint outputOffset)
{
char* in = (char*) env->GetPrimitiveArrayCritical((jarray) input, 0);
char* out = (char*) env->GetPrimitiveArrayCritical((jarray) output, 0);
if(in == 0 || out == 0) {
// out of memory
if(in != 0) {
env->ReleasePrimitiveArrayCritical((jarray) input, in, 0);
}
if(out != 0) {
env->ReleasePrimitiveArrayCritical((jarray) output, out, 0);
}
throw_exception(env, self, 4);
return 0;
}
int64_t processedBytes = bshuf_bitunshuffle(
in + inputOffset, out + outputOffset, (size_t) (length / typeSize), (size_t) typeSize, 0);
env->ReleasePrimitiveArrayCritical((jarray) input, in, 0);
env->ReleasePrimitiveArrayCritical((jarray) output, out, 0);
return (jint) processedBytes;
}

29
src/main/java/org/xerial/snappy/BitShuffleNative.h
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@ -1,29 +0,0 @@
/* DO NOT EDIT THIS FILE - it is machine generated */
#include <jni.h>
/* Header for class org_xerial_snappy_BitShuffleNative */
#ifndef _Included_org_xerial_snappy_BitShuffleNative
#define _Included_org_xerial_snappy_BitShuffleNative
#ifdef __cplusplus
extern "C" {
#endif
/*
* Class: org_xerial_snappy_BitShuffleNative
* Method: bitShuffle
* Signature: (Ljava/lang/Object;IIILjava/lang/Object;I)I
*/
JNIEXPORT jint JNICALL Java_org_xerial_snappy_BitShuffleNative_bitShuffle
(JNIEnv *, jobject, jobject, jint, jint, jint, jobject, jint);
/*
* Class: org_xerial_snappy_BitShuffleNative
* Method: bitUnShuffle
* Signature: (Ljava/lang/Object;IIILjava/lang/Object;I)I
*/
JNIEXPORT jint JNICALL Java_org_xerial_snappy_BitShuffleNative_bitUnShuffle
(JNIEnv *, jobject, jobject, jint, jint, jint, jobject, jint);
#ifdef __cplusplus
}
#endif
#endif

53
src/main/java/org/xerial/snappy/BitShuffleNative.java
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@ -1,53 +0,0 @@
/*--------------------------------------------------------------------------
* Copyright 2011 Taro L. Saito
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*--------------------------------------------------------------------------*/
//--------------------------------------
// snappy-java Project
//
// BitShuffleNative.java
// Since: 2016/03/31
//
// $URL$
// $Author$
//--------------------------------------
package org.xerial.snappy;
import java.io.IOException;
/**
* JNI interfaces of the {@link BitShuffle} implementation. The native method in this class is
* defined in BitShuffleNative.h (genereted by javah) and BitShuffleNative.cpp
* <p/>
* <p>
* <b> DO NOT USE THIS CLASS since the direct use of this class might break the
* native library code loading in {@link SnappyLoader}. </b>
* </p>
*
* @author leo
*/
public class BitShuffleNative
{
// ------------------------------------------------------------------------
// Bit-shuffling routines to improve compression of typed binary data.
// A quick benchmark result can be found in a gist below;
// https://gist.github.com/maropu/01103215df34b317a7a7
// ------------------------------------------------------------------------
public native int bitShuffle(Object input, int inputOffset, int typeSize, int byteLength, Object output, int outputOffset)
throws IOException;
public native int bitUnShuffle(Object input, int inputOffset, int typeSize, int byteLength, Object output, int outputOffset)
throws IOException;
}

6
src/main/java/org/xerial/snappy/Snappy.java
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@ -44,7 +44,7 @@ public class Snappy
{ {
static { static {
try { try {
impl = SnappyLoader.loadSnappyApi(); impl = SnappyLoader.load();
} }
catch (Exception e) { catch (Exception e) {
throw new ExceptionInInitializerError(e); throw new ExceptionInInitializerError(e);
@ -66,7 +66,7 @@ public class Snappy
public static void cleanUp() public static void cleanUp()
{ {
SnappyLoader.cleanUpExtractedNativeLib(); SnappyLoader.cleanUpExtractedNativeLib();
SnappyLoader.setSnappyApi(null); SnappyLoader.setApi(null);
} }
/** /**
@ -295,7 +295,7 @@ public class Snappy
versionData.load(in); versionData.load(in);
version = versionData.getProperty("version", version); version = versionData.getProperty("version", version);
if (version.equals("unknown")) { if (version.equals("unknown")) {
version = versionData.getProperty("SNAPPY_VERSION", version); version = versionData.getProperty("VERSION", version);
} }
version = version.trim().replaceAll("[^0-9\\.]", ""); version = version.trim().replaceAll("[^0-9\\.]", "");
} }

4
src/main/java/org/xerial/snappy/SnappyBundleActivator.java
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@ -56,13 +56,13 @@ public class SnappyBundleActivator
library = library.replace(".dylib", ".jnilib"); library = library.replace(".dylib", ".jnilib");
} }
System.loadLibrary(library); System.loadLibrary(library);
SnappyLoader.setSnappyApi(new SnappyNative()); SnappyLoader.setApi(new SnappyNative());
} }
public void stop(BundleContext context) public void stop(BundleContext context)
throws Exception throws Exception
{ {
SnappyLoader.setSnappyApi(null); SnappyLoader.setApi(null);
SnappyLoader.cleanUpExtractedNativeLib(); SnappyLoader.cleanUpExtractedNativeLib();
} }
} }

71
src/main/java/org/xerial/snappy/SnappyLoader.java
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@ -79,10 +79,8 @@ public class SnappyLoader
public static final String KEY_SNAPPY_USE_SYSTEMLIB = "org.xerial.snappy.use.systemlib"; public static final String KEY_SNAPPY_USE_SYSTEMLIB = "org.xerial.snappy.use.systemlib";
public static final String KEY_SNAPPY_DISABLE_BUNDLED_LIBS = "org.xerial.snappy.disable.bundled.libs"; // Depreciated, but preserved for backward compatibility public static final String KEY_SNAPPY_DISABLE_BUNDLED_LIBS = "org.xerial.snappy.disable.bundled.libs"; // Depreciated, but preserved for backward compatibility
private static boolean isLoaded = false; private static volatile boolean isLoaded = false;
private static volatile SnappyNative api = null;
private static volatile SnappyNative snappyApi = null;
private static volatile BitShuffleNative bitshuffleApi = null;
private static File nativeLibFile = null; private static File nativeLibFile = null;
@ -93,19 +91,17 @@ public class SnappyLoader
if (!deleted) { if (!deleted) {
// Deleting native lib has failed, but it's not serious so simply ignore it here // Deleting native lib has failed, but it's not serious so simply ignore it here
} }
snappyApi = null;
bitshuffleApi = null;
} }
} }
/** /**
* Set the `snappyApi` instance. * Set the api instance.
* *
* @param nativeCode * @param nativeCode
*/ */
static synchronized void setSnappyApi(SnappyNative nativeCode) static synchronized void setApi(SnappyNative nativeCode)
{ {
snappyApi = nativeCode; api = nativeCode;
} }
/** /**
@ -146,47 +142,40 @@ public class SnappyLoader
loadSnappySystemProperties(); loadSnappySystemProperties();
} }
static synchronized SnappyNative loadSnappyApi() static synchronized SnappyNative load()
{ {
if (snappyApi != null) { if (api != null) {
return snappyApi; return api;
} }
loadNativeLibrary();
setSnappyApi(new SnappyNative());
return snappyApi;
}
static synchronized BitShuffleNative loadBitShuffleApi() try {
{ loadNativeLibrary();
if (bitshuffleApi != null) {
return bitshuffleApi; setApi(new SnappyNative());
isLoaded = true;
} }
loadNativeLibrary(); catch (Exception e) {
bitshuffleApi = new BitShuffleNative(); e.printStackTrace();
return bitshuffleApi; throw new SnappyError(SnappyErrorCode.FAILED_TO_LOAD_NATIVE_LIBRARY, e.getMessage());
}
return api;
} }
/** /**
* Load a native library of snappy-java * Load a native library of snappy-java
*/ */
private synchronized static void loadNativeLibrary() private static void loadNativeLibrary()
{ {
if (!isLoaded) {
try { nativeLibFile = findNativeLibrary();
nativeLibFile = findNativeLibrary(); if (nativeLibFile != null) {
if (nativeLibFile != null) { // Load extracted or specified snappyjava native library.
// Load extracted or specified snappyjava native library. System.load(nativeLibFile.getAbsolutePath());
System.load(nativeLibFile.getAbsolutePath()); }
} else { else {
// Load preinstalled snappyjava (in the path -Djava.library.path) // Load preinstalled snappyjava (in the path -Djava.library.path)
System.loadLibrary("snappyjava"); System.loadLibrary("snappyjava");
}
}
catch (Exception e) {
e.printStackTrace();
throw new SnappyError(SnappyErrorCode.FAILED_TO_LOAD_NATIVE_LIBRARY, e.getMessage());
}
isLoaded = true;
} }
} }
@ -383,7 +372,7 @@ public class SnappyLoader
versionData.load(versionFile.openStream()); versionData.load(versionFile.openStream());
version = versionData.getProperty("version", version); version = versionData.getProperty("version", version);
if (version.equals("unknown")) { if (version.equals("unknown")) {
version = versionData.getProperty("SNAPPY_VERSION", version); version = versionData.getProperty("VERSION", version);
} }
version = version.trim().replaceAll("[^0-9M\\.]", ""); version = version.trim().replaceAll("[^0-9M\\.]", "");
} }

30
src/main/java/org/xerial/snappy/SnappyNative.cpp
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@ -18,22 +18,22 @@
#include <snappy.h> #include <snappy.h>
#include "SnappyNative.h" #include "SnappyNative.h"
inline void throw_exception(JNIEnv *env, jobject self, int errorCode) void throw_exception(JNIEnv *env, jobject self, int errorCode)
{ {
jclass c = env->FindClass("org/xerial/snappy/SnappyNative"); jclass c = env->FindClass("org/xerial/snappy/SnappyNative");
if(c==0) if(c==0)
return; return;
jmethodID mth_throwex = env->GetMethodID(c, "throw_error", "(I)V"); jmethodID mth_throwex = env->GetMethodID(c, "throw_error", "(I)V");
if(mth_throwex == 0) if(mth_throwex == 0)
return; return;
env->CallVoidMethod(self, mth_throwex, (jint) errorCode); env->CallVoidMethod(self, mth_throwex, (jint) errorCode);
} }
JNIEXPORT jstring JNICALL Java_org_xerial_snappy_SnappyNative_nativeLibraryVersion JNIEXPORT jstring JNICALL Java_org_xerial_snappy_SnappyNative_nativeLibraryVersion
(JNIEnv * env, jobject self) (JNIEnv * env, jobject self)
{ {
// TODO: Do we need to read this library version from resources/org/xerial/snappy/VERSION? return env->NewStringUTF("1.1.0");
return env->NewStringUTF("1.1.3");
} }
JNIEXPORT jlong JNICALL Java_org_xerial_snappy_SnappyNative_rawCompress__JJJ JNIEXPORT jlong JNICALL Java_org_xerial_snappy_SnappyNative_rawCompress__JJJ
@ -41,7 +41,9 @@ JNIEXPORT jlong JNICALL Java_org_xerial_snappy_SnappyNative_rawCompress__JJJ
size_t compressedLength; size_t compressedLength;
snappy::RawCompress((char*) srcAddr, (size_t) length, (char*) destAddr, &compressedLength); snappy::RawCompress((char*) srcAddr, (size_t) length, (char*) destAddr, &compressedLength);
return (jlong) compressedLength; return (jlong) compressedLength;
} }
JNIEXPORT jlong JNICALL Java_org_xerial_snappy_SnappyNative_rawUncompress__JJJ JNIEXPORT jlong JNICALL Java_org_xerial_snappy_SnappyNative_rawUncompress__JJJ
(JNIEnv* env, jobject self, jlong srcAddr, jlong length, jlong destAddr) { (JNIEnv* env, jobject self, jlong srcAddr, jlong length, jlong destAddr) {
@ -56,7 +58,9 @@ JNIEXPORT jlong JNICALL Java_org_xerial_snappy_SnappyNative_rawUncompress__JJJ
} }
return (jlong) uncompressedLength; return (jlong) uncompressedLength;
} }
/* /*
* Class: org_xerial_snappy_Snappy * Class: org_xerial_snappy_Snappy
@ -78,6 +82,7 @@ JNIEXPORT jint JNICALL Java_org_xerial_snappy_SnappyNative_rawCompress__Ljava_ni
return (jint) compressedLength; return (jint) compressedLength;
} }
JNIEXPORT jint JNICALL Java_org_xerial_snappy_SnappyNative_rawCompress__Ljava_lang_Object_2IILjava_lang_Object_2I JNIEXPORT jint JNICALL Java_org_xerial_snappy_SnappyNative_rawCompress__Ljava_lang_Object_2IILjava_lang_Object_2I
(JNIEnv * env, jobject self, jobject input, jint inputOffset, jint inputLen, jobject output, jint outputOffset) (JNIEnv * env, jobject self, jobject input, jint inputOffset, jint inputLen, jobject output, jint outputOffset)
{ {
@ -136,6 +141,7 @@ JNIEXPORT jint JNICALL Java_org_xerial_snappy_SnappyNative_rawUncompress__Ljava_
return (jint) uncompressedLength; return (jint) uncompressedLength;
} }
/* /*
* Class: org_xerial_snappy_Snappy * Class: org_xerial_snappy_Snappy
* Method: uncompress * Method: uncompress
@ -162,6 +168,8 @@ JNIEXPORT jint JNICALL Java_org_xerial_snappy_SnappyNative_rawUncompress__Ljava_
return (jint) decompressedLength; return (jint) decompressedLength;
} }
/* /*
* Class: org_xerial_snappy_Snappy * Class: org_xerial_snappy_Snappy
* Method: maxCompressedLength * Method: maxCompressedLength
@ -232,7 +240,8 @@ JNIEXPORT jlong JNICALL Java_org_xerial_snappy_SnappyNative_uncompressedLength__
} }
return (jint) result; return (jint) result;
} }
JNIEXPORT jboolean JNICALL Java_org_xerial_snappy_SnappyNative_isValidCompressedBuffer__Ljava_nio_ByteBuffer_2II JNIEXPORT jboolean JNICALL Java_org_xerial_snappy_SnappyNative_isValidCompressedBuffer__Ljava_nio_ByteBuffer_2II
(JNIEnv * env, jobject self, jobject compressed, jint cpos, jint clen) (JNIEnv * env, jobject self, jobject compressed, jint cpos, jint clen)
@ -297,3 +306,4 @@ JNIEXPORT void JNICALL Java_org_xerial_snappy_SnappyNative_arrayCopy
env->ReleasePrimitiveArrayCritical((jarray) output, dest, 0); env->ReleasePrimitiveArrayCritical((jarray) output, dest, 0);
} }

0
src/main/java/org/xerial/snappy/SnappyNative.h Normal file → Executable file
View File

3
src/main/resources/org/xerial/snappy/VERSION
View File

@ -1,2 +1 @@
SNAPPY_VERSION=1.1.3 VERSION=1.1.3
BITSHUFFLE_VERSION=0.2.2

82
src/test/java/org/xerial/snappy/BitShuffleTest.java
View File

@ -1,82 +0,0 @@
/*--------------------------------------------------------------------------
* Copyright 2011 Taro L. Saito
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*--------------------------------------------------------------------------*/
//--------------------------------------
// snappy-java Project
//
// BitShuffleTest.java
// Since: 2016/03/31
//
// $URL$
// $Author$
//--------------------------------------
package org.xerial.snappy;
import static org.junit.Assert.*;
import org.junit.Test;
public class BitShuffleTest {
@Test
public void bitShuffleLongArray()
throws Exception
{
long[] data = new long[] {2, 3, 15, 4234, 43251531412342342L, 23423422342L};
byte[] shuffledData = BitShuffle.bitShuffle(data);
long[] result = BitShuffle.bitUnShuffleLongArray(shuffledData);
assertArrayEquals(data, result);
}
@Test
public void bitShuffleShortArray()
throws Exception
{
short[] data = new short[] {432, -32267, 1, 3, 34, 43, 34, Short.MAX_VALUE, -1};
byte[] shuffledData = BitShuffle.bitShuffle(data);
short[] result = BitShuffle.bitUnShuffleShortArray(shuffledData);
assertArrayEquals(data, result);
}
@Test
public void bitShuffleIntArray()
throws Exception
{
int[] data = new int[] {432, -32267, 1, 3, 34, 43, 34, Short.MAX_VALUE, -1, Integer.MAX_VALUE, 3424, 43};
byte[] shuffledData = BitShuffle.bitShuffle(data);
int[] result = BitShuffle.bitUnShuffleIntArray(shuffledData);
assertArrayEquals(data, result);
}
@Test
public void bitShuffleFloatArray()
throws Exception
{
float[] data = new float[] {100.0f, 0.5f, -0.1f, 30.3f, Float.MIN_NORMAL, Float.MAX_EXPONENT, Float.MAX_VALUE, -0.1f, Integer.MIN_VALUE};
byte[] shuffledData = BitShuffle.bitShuffle(data);
float[] result = BitShuffle.bitUnShuffleFloatArray(shuffledData);
assertArrayEquals(data, result, 0.0000001f);
}
@Test
public void bitShuffleDoubleArray()
throws Exception
{
double[] data = new double[] {100.0f, 0.5f, -0.1f, 30.3f, Float.MIN_NORMAL, Float.MAX_EXPONENT, Float.MAX_VALUE, -0.1f, Integer.MIN_VALUE};
byte[] shuffledData = BitShuffle.bitShuffle(data);
double[] result = BitShuffle.bitUnShuffleDoubleArray(shuffledData);
assertArrayEquals(data, result, 0.0000001f);
}
}

2
src/test/java/org/xerial/snappy/SnappyLoaderTest.java
View File

@ -117,7 +117,7 @@ public class SnappyLoaderTest
public void load() public void load()
throws Exception throws Exception
{ {
SnappyLoader.loadSnappyApi(); SnappyLoader.load();
_logger.debug(Snappy.maxCompressedLength(1024)); _logger.debug(Snappy.maxCompressedLength(1024));
} }