23  * questions.

    23  * questions.

    24  */

    24  */

    25 

    25 

    26 package java.util.zip;

    26 package java.util.zip;

    27 

    27 

    29 import java.nio.ByteBuffer;

    28 import java.nio.ByteBuffer;

    30 import java.nio.file.attribute.FileTime;

    29 import java.nio.file.attribute.FileTime;

    31 import java.security.AccessController;

    30 import java.security.AccessController;

    32 import java.security.PrivilegedAction;

    31 import java.security.PrivilegedAction;

    33 import java.time.DateTimeException;

    32 import java.time.DateTimeException;

    38 import java.util.concurrent.TimeUnit;

    37 import java.util.concurrent.TimeUnit;

    39 

    38 

    40 import static java.util.zip.ZipConstants.ENDHDR;

    39 import static java.util.zip.ZipConstants.ENDHDR;

    41 

    40 

    42 import jdk.internal.misc.Unsafe;

    41 import jdk.internal.misc.Unsafe;

    44 

    42 

    45 class ZipUtils {

    43 class ZipUtils {

    46 

    44 

    47     // used to adjust values between Windows and java epoch

    45     // used to adjust values between Windows and java epoch

    48     private static final long WINDOWS_EPOCH_IN_MICROSECONDS = -11644473600000000L;

    46     private static final long WINDOWS_EPOCH_IN_MICROSECONDS = -11644473600000000L;

   293 

   291 

   294     private static final long byteBufferArrayOffset = unsafe.objectFieldOffset(ByteBuffer.class, "hb");

   292     private static final long byteBufferArrayOffset = unsafe.objectFieldOffset(ByteBuffer.class, "hb");

   295     private static final long byteBufferOffsetOffset = unsafe.objectFieldOffset(ByteBuffer.class, "offset");

   293     private static final long byteBufferOffsetOffset = unsafe.objectFieldOffset(ByteBuffer.class, "offset");

   296 

   294 

   297     static byte[] getBufferArray(ByteBuffer byteBuffer) {

   295     static byte[] getBufferArray(ByteBuffer byteBuffer) {

   299     }

   297     }

   300 

   298 

   301     static int getBufferOffset(ByteBuffer byteBuffer) {

   299     static int getBufferOffset(ByteBuffer byteBuffer) {

   302         return unsafe.getInt(byteBuffer, byteBufferOffsetOffset);

   300         return unsafe.getInt(byteBuffer, byteBufferOffsetOffset);

   303     }

   301     }