diff --git a/jni/README.md b/java-native/README.md similarity index 100% rename from jni/README.md rename to java-native/README.md diff --git a/java-native/pom.xml b/java-native/pom.xml new file mode 100644 index 0000000000..29fc13b8d8 --- /dev/null +++ b/java-native/pom.xml @@ -0,0 +1,39 @@ + + + 4.0.0 + java-native + java-native + + + com.baeldung + parent-modules + 1.0.0-SNAPSHOT + + + + 5.6.0 + + + + + net.java.dev.jna + jna-platform + ${jna.version} + + + + + + + org.apache.maven.plugins + maven-surefire-plugin + + + false + + + + + \ No newline at end of file diff --git a/jni/src/main/cpp/com_baeldung_jni_ExampleObjectsJNI.cpp b/java-native/src/main/cpp/com_baeldung_jni_ExampleObjectsJNI.cpp similarity index 100% rename from jni/src/main/cpp/com_baeldung_jni_ExampleObjectsJNI.cpp rename to java-native/src/main/cpp/com_baeldung_jni_ExampleObjectsJNI.cpp diff --git a/jni/src/main/cpp/com_baeldung_jni_ExampleObjectsJNI.h b/java-native/src/main/cpp/com_baeldung_jni_ExampleObjectsJNI.h similarity index 100% rename from jni/src/main/cpp/com_baeldung_jni_ExampleObjectsJNI.h rename to java-native/src/main/cpp/com_baeldung_jni_ExampleObjectsJNI.h diff --git a/jni/src/main/cpp/com_baeldung_jni_ExampleParametersJNI.cpp b/java-native/src/main/cpp/com_baeldung_jni_ExampleParametersJNI.cpp similarity index 100% rename from jni/src/main/cpp/com_baeldung_jni_ExampleParametersJNI.cpp rename to java-native/src/main/cpp/com_baeldung_jni_ExampleParametersJNI.cpp diff --git a/jni/src/main/cpp/com_baeldung_jni_ExampleParametersJNI.h b/java-native/src/main/cpp/com_baeldung_jni_ExampleParametersJNI.h similarity index 100% rename from jni/src/main/cpp/com_baeldung_jni_ExampleParametersJNI.h rename to java-native/src/main/cpp/com_baeldung_jni_ExampleParametersJNI.h diff --git a/jni/src/main/cpp/com_baeldung_jni_HelloWorldJNI.cpp b/java-native/src/main/cpp/com_baeldung_jni_HelloWorldJNI.cpp similarity index 100% rename from jni/src/main/cpp/com_baeldung_jni_HelloWorldJNI.cpp rename to java-native/src/main/cpp/com_baeldung_jni_HelloWorldJNI.cpp diff --git a/jni/src/main/cpp/com_baeldung_jni_HelloWorldJNI.h b/java-native/src/main/cpp/com_baeldung_jni_HelloWorldJNI.h similarity index 100% rename from jni/src/main/cpp/com_baeldung_jni_HelloWorldJNI.h rename to java-native/src/main/cpp/com_baeldung_jni_HelloWorldJNI.h diff --git a/jni/src/main/cpp/generateNativeLib.bat b/java-native/src/main/cpp/generateNativeLib.bat similarity index 100% rename from jni/src/main/cpp/generateNativeLib.bat rename to java-native/src/main/cpp/generateNativeLib.bat diff --git a/jni/src/main/cpp/generateNativeLib.sh b/java-native/src/main/cpp/generateNativeLib.sh old mode 100755 new mode 100644 similarity index 100% rename from jni/src/main/cpp/generateNativeLib.sh rename to java-native/src/main/cpp/generateNativeLib.sh diff --git a/jni/src/main/cpp/generateNativeLibMac.sh b/java-native/src/main/cpp/generateNativeLibMac.sh old mode 100755 new mode 100644 similarity index 100% rename from jni/src/main/cpp/generateNativeLibMac.sh rename to java-native/src/main/cpp/generateNativeLibMac.sh diff --git a/java-native/src/main/java/com/baeldung/jna/CMath.java b/java-native/src/main/java/com/baeldung/jna/CMath.java new file mode 100644 index 0000000000..3ab5bdf48b --- /dev/null +++ b/java-native/src/main/java/com/baeldung/jna/CMath.java @@ -0,0 +1,10 @@ +package com.baeldung.jna; + +import com.sun.jna.Library; +import com.sun.jna.Native; +import com.sun.jna.Platform; + +public interface CMath extends Library { + CMath INSTANCE = Native.load(Platform.isWindows() ? "msvcrt" : "c", CMath.class); + double cosh(double value); +} diff --git a/java-native/src/main/java/com/baeldung/jna/Main.java b/java-native/src/main/java/com/baeldung/jna/Main.java new file mode 100644 index 0000000000..a81c878cde --- /dev/null +++ b/java-native/src/main/java/com/baeldung/jna/Main.java @@ -0,0 +1,8 @@ +package com.baeldung.jna; + +public class Main { + + public static void main(String[] args) { + + } +} \ No newline at end of file diff --git a/java-native/src/main/java/com/baeldung/jna/NativeFS.java b/java-native/src/main/java/com/baeldung/jna/NativeFS.java new file mode 100644 index 0000000000..58f2bda035 --- /dev/null +++ b/java-native/src/main/java/com/baeldung/jna/NativeFS.java @@ -0,0 +1,46 @@ +package com.baeldung.jna; + +import java.util.Collections; +import java.util.Map; + +import com.sun.jna.FunctionMapper; +import com.sun.jna.LastErrorException; +import com.sun.jna.Library; +import com.sun.jna.Native; +import com.sun.jna.NativeLong; +import com.sun.jna.Platform; +import com.sun.jna.Structure; +import com.sun.jna.Structure.FieldOrder; + +public interface NativeFS extends Library { + + FunctionMapper mapper = (library,method) -> { + if (Platform.isWindows()) { + return "_" + method.getName(); + } + else { + return "__x" + method.getName(); // On Linux, stat is actually _xstat + } + }; + + public NativeFS INSTANCE = Native.load(Platform.isWindows() ? "msvcrt" : "c", + NativeFS.class, + Collections.singletonMap(Library.OPTION_FUNCTION_MAPPER, mapper)); + + int stat(String path, Stat stat) throws LastErrorException; + + @FieldOrder({"st_dev","st_ino","st_mode","st_nlink","st_uid","st_gid","st_rdev","st_size","st_atime","st_mtime","st_ctime"}) + public class Stat extends Structure { + public int st_dev; + public int st_ino; + public short st_mode; + public short st_nlink; + public short st_uid; + public short st_gid; + public int st_rdev; + public NativeLong st_size; + public NativeLong st_atime; + public NativeLong st_mtime; + public NativeLong st_ctime; + } +} diff --git a/java-native/src/main/java/com/baeldung/jna/StdC.java b/java-native/src/main/java/com/baeldung/jna/StdC.java new file mode 100644 index 0000000000..1adbe684c4 --- /dev/null +++ b/java-native/src/main/java/com/baeldung/jna/StdC.java @@ -0,0 +1,17 @@ +package com.baeldung.jna; + +import com.sun.jna.LastErrorException; +import com.sun.jna.Library; +import com.sun.jna.Native; +import com.sun.jna.Platform; +import com.sun.jna.Pointer; + +public interface StdC extends Library { + StdC INSTANCE = Native.load(Platform.isWindows() ? "msvcrt" : "c", StdC.class ); + Pointer malloc(long n); + void free(Pointer p); + Pointer memset(Pointer p, int c, long n); + int open(String path, int flags) throws LastErrorException; + int close(int fd) throws LastErrorException; +} + diff --git a/jni/src/main/java/com/baeldung/jni/ExampleObjectsJNI.java b/java-native/src/main/java/com/baeldung/jni/ExampleObjectsJNI.java similarity index 100% rename from jni/src/main/java/com/baeldung/jni/ExampleObjectsJNI.java rename to java-native/src/main/java/com/baeldung/jni/ExampleObjectsJNI.java diff --git a/jni/src/main/java/com/baeldung/jni/ExampleParametersJNI.java b/java-native/src/main/java/com/baeldung/jni/ExampleParametersJNI.java similarity index 100% rename from jni/src/main/java/com/baeldung/jni/ExampleParametersJNI.java rename to java-native/src/main/java/com/baeldung/jni/ExampleParametersJNI.java diff --git a/jni/src/main/java/com/baeldung/jni/HelloWorldJNI.java b/java-native/src/main/java/com/baeldung/jni/HelloWorldJNI.java similarity index 100% rename from jni/src/main/java/com/baeldung/jni/HelloWorldJNI.java rename to java-native/src/main/java/com/baeldung/jni/HelloWorldJNI.java diff --git a/jni/src/main/java/com/baeldung/jni/UserData.java b/java-native/src/main/java/com/baeldung/jni/UserData.java similarity index 100% rename from jni/src/main/java/com/baeldung/jni/UserData.java rename to java-native/src/main/java/com/baeldung/jni/UserData.java diff --git a/jni/src/main/resources/logback.xml b/java-native/src/main/resources/logback.xml similarity index 100% rename from jni/src/main/resources/logback.xml rename to java-native/src/main/resources/logback.xml diff --git a/java-native/src/test/java/com/baeldung/jna/CMathUnitTest.java b/java-native/src/test/java/com/baeldung/jna/CMathUnitTest.java new file mode 100644 index 0000000000..a9cc6ed1c4 --- /dev/null +++ b/java-native/src/test/java/com/baeldung/jna/CMathUnitTest.java @@ -0,0 +1,18 @@ +package com.baeldung.jna; + +import static org.junit.jupiter.api.Assertions.*; + +import org.junit.jupiter.api.Test; + +import com.sun.jna.Native; +import com.sun.jna.Platform; + +class CMathUnitTest { + @Test + void whenCallNative_thenSuccess() { + CMath lib = Native.load(Platform.isWindows() ? "msvcrt" : "c", CMath.class); + double result = lib.cosh(0); + assertEquals(1.0,result); + } + +} diff --git a/java-native/src/test/java/com/baeldung/jna/NativeFSUnitTest.java b/java-native/src/test/java/com/baeldung/jna/NativeFSUnitTest.java new file mode 100644 index 0000000000..d296f9e2ca --- /dev/null +++ b/java-native/src/test/java/com/baeldung/jna/NativeFSUnitTest.java @@ -0,0 +1,38 @@ +package com.baeldung.jna; + +import static org.junit.Assert.fail; +import static org.junit.jupiter.api.Assertions.assertEquals; + +import java.io.File; +import java.io.IOException; +import java.nio.file.Files; + +import org.junit.jupiter.api.Test; + +import com.baeldung.jna.NativeFS.Stat; +import com.sun.jna.LastErrorException; +import com.sun.jna.Platform; + +public class NativeFSUnitTest { + + + @Test + public void whenCallNative_thenSuccess() throws IOException { + NativeFS lib = NativeFS.INSTANCE; + + File f = Files.createTempFile("junit", ".bin").toFile(); + f.deleteOnExit(); + Stat stat = new Stat(); + try { + if (Platform.isWindows()) { + int rc = lib.stat(f.getAbsolutePath(), stat); + assertEquals(0, rc); + assertEquals(0,stat.st_size.longValue()); + } + } + catch(LastErrorException error) { + fail("stat failed: error code=" + error.getErrorCode()); + } + + } +} diff --git a/java-native/src/test/java/com/baeldung/jna/StdCUnitTest.java b/java-native/src/test/java/com/baeldung/jna/StdCUnitTest.java new file mode 100644 index 0000000000..c536fd63d5 --- /dev/null +++ b/java-native/src/test/java/com/baeldung/jna/StdCUnitTest.java @@ -0,0 +1,47 @@ +package com.baeldung.jna; + +import static org.junit.jupiter.api.Assertions.*; + +import org.junit.BeforeClass; +import org.junit.jupiter.api.Test; + +import com.sun.jna.Native; +import com.sun.jna.Platform; +import com.sun.jna.Pointer; + +class StdCUnitTest { + + @BeforeClass + public static void setupProtectedMode() { + Native.setProtected(true); + } + + @Test + public void whenMalloc_thenSuccess() { + StdC lib = StdC.INSTANCE; + Pointer p = lib.malloc(1024); + p.setMemory(0l, 1024l, (byte) 0); + lib.free(p); + } + + @Test + public void whenAccessViolation_thenShouldThrowError() { + // Running this test on Linux requires additional setup using libjsig.so + // Details here: http://java-native-access.github.io/jna/5.6.0/javadoc/overview-summary.html#crash-protection + // IMPORTANT NOTICE: Code for illustration purposes only. DON'T DO THIS IN YOUR OWN CODE + if ( Platform.isWindows()) { + Error e = null; + Pointer p = new Pointer(0l); + + try { + p.setMemory(0, 100*1024, (byte) 0); + } + catch(Error err) { + e = err; + } + + assertNotNull(e, "Should throw Error"); + } + } + +} diff --git a/jni/src/test/java/com/baeldung/jni/JNINativeManualTest.java b/java-native/src/test/java/com/baeldung/jni/JNINativeManualTest.java similarity index 100% rename from jni/src/test/java/com/baeldung/jni/JNINativeManualTest.java rename to java-native/src/test/java/com/baeldung/jni/JNINativeManualTest.java diff --git a/jni/native/linux_x86_64/libnative.so b/jni/native/linux_x86_64/libnative.so deleted file mode 100755 index 213491e268..0000000000 Binary files a/jni/native/linux_x86_64/libnative.so and /dev/null differ diff --git a/jni/native/macos/libnative.dylib b/jni/native/macos/libnative.dylib deleted file mode 100755 index 6d1264d696..0000000000 Binary files a/jni/native/macos/libnative.dylib and /dev/null differ diff --git a/jni/pom.xml b/jni/pom.xml deleted file mode 100644 index d64fa12c5a..0000000000 --- a/jni/pom.xml +++ /dev/null @@ -1,14 +0,0 @@ - - - 4.0.0 - jni - jni - - - com.baeldung - parent-modules - 1.0.0-SNAPSHOT - - - \ No newline at end of file diff --git a/pom.xml b/pom.xml index ab1c47361c..ac1a16a728 100644 --- a/pom.xml +++ b/pom.xml @@ -465,7 +465,7 @@ jjwt jmeter jmh - jni + java-native jooby jsf json @@ -1501,4 +1501,4 @@ 1.4.197 - \ No newline at end of file +