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wentch
2016-01-27 10:03:44 +08:00
parent fbb2559da1
commit 3b50be36b0
1 changed files with 16 additions and 7 deletions
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23
src/org/redkale/util/Utility.java
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@@ -43,11 +43,14 @@ public final class Utility {
long fd1 = 0L;
long fd2 = 0L;
try {
Field safeField = sun.misc.Unsafe.class.getDeclaredField("theUnsafe");
safeField.setAccessible(true);
usafe = (sun.misc.Unsafe) safeField.get(null);
fd1 = usafe.objectFieldOffset(String.class.getDeclaredField("value"));
fd2 = usafe.objectFieldOffset(StringBuilder.class.getSuperclass().getDeclaredField("value"));
Field f = String.class.getDeclaredField("value");
if (f.getType() == char[].class) { //JDK9及以上不再是char[]
Field safeField = sun.misc.Unsafe.class.getDeclaredField("theUnsafe");
safeField.setAccessible(true);
usafe = (sun.misc.Unsafe) safeField.get(null);
fd1 = usafe.objectFieldOffset(f);
fd2 = usafe.objectFieldOffset(StringBuilder.class.getSuperclass().getDeclaredField("value"));
}
} catch (Exception e) {
throw new RuntimeException(e); //不可能会发生
}
@@ -313,6 +316,7 @@ public final class Utility {
public static byte[] encodeUTF8(final String value) {
if (value == null) return new byte[0];
if (UNSAFE == null) return encodeUTF8(value.toCharArray());
return encodeUTF8((char[]) UNSAFE.getObject(value, strvaloffset));
}
@@ -354,11 +358,15 @@ public final class Utility {
}
public static char[] charArray(String value) {
return value == null ? null : (char[]) UNSAFE.getObject(value, strvaloffset);
if (value == null) return null;
if (UNSAFE == null) return value.toCharArray();
return (char[]) UNSAFE.getObject(value, strvaloffset);
}
public static char[] charArray(StringBuilder value) {
return value == null ? null : (char[]) UNSAFE.getObject(value, sbvaloffset);
if (value == null) return null;
if (UNSAFE == null) return value.toString().toCharArray();
return (char[]) UNSAFE.getObject(value, sbvaloffset);
}
public static ByteBuffer encodeUTF8(final ByteBuffer buffer, final char[] array) {
@@ -371,6 +379,7 @@ public final class Utility {
public static int encodeUTF8Length(String value) {
if (value == null) return -1;
if (UNSAFE == null) return encodeUTF8Length(value.toCharArray());
return encodeUTF8Length((char[]) UNSAFE.getObject(value, strvaloffset));
}