REPORT-85397 patch fr之前做的适配

fine-j2v8/src/main/java/com/eclipsesource/v8/LibraryLoader.java

@@ -15,6 +15,7 @@ import java.io.File;
 import java.io.FileOutputStream;
 import java.io.IOException;
 import java.io.InputStream;
+import java.lang.management.ManagementFactory;
 
 public class LibraryLoader {
 
@@ -23,6 +24,8 @@ public class LibraryLoader {
 
     static final String SWT_LIB_DIR = ".j2v8";
 
+    static final String MINIMUM_VERSION = "6.2";
+
     static {
         DELIMITER = System.getProperty("line.separator"); //$NON-NLS-1$
         SEPARATOR = System.getProperty("file.separator"); //$NON-NLS-1$
@@ -30,6 +33,7 @@ public class LibraryLoader {
 
     /**
      * Returns the base-name for the native J2V8 library file.
+     *
      * @param withLinuxVendor include/exclude the {vendor} part from the returned filename
      *                        <p>NOTE: Vendors are only included for linux systems</p>
      * @return The filename string has the following structure:
@@ -141,6 +145,7 @@ public class LibraryLoader {
         FileOutputStream os = null;
         InputStream is = null;
         File file = new File(fileName);
+        String absoluteName = file.getAbsolutePath();
         boolean extracted = false;
         try {
             if (file.exists()) {
@@ -158,7 +163,7 @@ public class LibraryLoader {
                 os.close();
                 is.close();
                 chmod("755", fileName);
-                if (load(fileName, message)) {
+                if (load(absoluteName, message)) {
                     return true;
                 }
             }
@@ -191,4 +196,48 @@ public class LibraryLoader {
         } catch (Throwable e) {
         }
     }
+
+    //内核版本windows NT6.2以下存在加载dll之后无法正常退出的问题，注册钩子函数退出时杀掉进程
+    static void checkExceptionVersion() {
+        String version = System.getProperty("os.version");
+        if (PlatformDetector.OS.isWindows() && belowMinimumVersion(version)) {
+            registerExit();
+        }
+    }
+
+    //低于指定版本，6.2以下
+    private static boolean belowMinimumVersion(String version) {
+        return compareVersion(version, MINIMUM_VERSION) < 0;
+    }
+
+    private static int compareVersion(String version1, String version2) {
+        String[] versionArray1 = version1.split("\\.");//注意此处为正则匹配，不能用"."；
+        String[] versionArray2 = version2.split("\\.");
+        int idx = 0;
+        int minLength = Math.min(versionArray1.length, versionArray2.length);//取最小长度值
+        int diff = 0;
+        while (idx < minLength
+                && (diff = versionArray1[idx].length() - versionArray2[idx].length()) == 0//先比较长度
+                && (diff = versionArray1[idx].compareTo(versionArray2[idx])) == 0) {//再比较字符
+            ++idx;
+        }
+        //如果已经分出大小，则直接返回，如果未分出大小，则再比较位数，有子版本的为大；
+        diff = (diff != 0) ? diff : versionArray1.length - versionArray2.length;
+        return diff;
+    }
+
+    //低于指定版本，6.2以下
+    private static void registerExit() {
+        Runtime.getRuntime().addShutdownHook(new Thread() {
+            @Override
+            public void run() {
+                String name = ManagementFactory.getRuntimeMXBean().getName();
+                String pid = name.split("@")[0];
+                try {
+                    Runtime.getRuntime().exec("taskkill /F /PID " + pid);
+                } catch (Exception ignore) {
+                }
+            }
+        });
+    }
 }

fine-j2v8/src/main/java/com/eclipsesource/v8/PlatformDetector.java

@@ -124,8 +124,9 @@ public class PlatformDetector {
             if (OS.isAndroid()) {
                 return "google";
             }
-
-            throw new UnsatisfiedLinkError("Unsupported vendor: " + getName());
+            //如果if条件全部不符合，就会陷入死循环，代码存在风险
+            //throw new UnsatisfiedLinkError("Unsupported vendor: " + getName());
+            return null;
         }
 
         private static String getLinuxOsReleaseId() {
@@ -144,7 +145,9 @@ public class PlatformDetector {
                 return parseLinuxRedhatReleaseFile(file);
             }
 
-            throw new UnsatisfiedLinkError("Unsupported linux vendor: " + getName());
+            //linux系统下如果缺失/etc/os-release,/usr/lib/os-release,/etc/redhat-release三个文件，就会和getName方法就会一直互相调用
+            //throw new UnsatisfiedLinkError("Unsupported linux vendor: " + getName());
+            return null;
         }
 
         private static String parseLinuxOsReleaseFile(final File file) {

fine-j2v8/src/main/java/com/eclipsesource/v8/V8.java

@@ -75,6 +75,7 @@ public class V8 extends V8Object {
         try {
             LibraryLoader.loadLibrary(tmpDirectory);
             nativeLibraryLoaded = true;
+            LibraryLoader.checkExceptionVersion();
         } catch (Error e) {
             nativeLoadError = e;
         } catch (Exception e) {

fine-j2v8/src/main/java/com/eclipsesource/v8/V8OutOfMemoryError.java

@@ -0,0 +1,17 @@
+package com.eclipsesource.v8;
+
+/**
+ * @author Bjorn
+ * @version 10.0
+ * Created by Bjorn on 2020-11-26
+ */
+public class V8OutOfMemoryError extends V8RuntimeException {
+
+    V8OutOfMemoryError(final String message) {
+        super(message);
+    }
+
+    V8OutOfMemoryError() {
+        super();
+    }
+}