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src/java.base/windows/classes/sun/nio/fs/WindowsNativeDispatcher.java

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rev 55686 : 8227587: Add internal privileged System.loadLibrary
Reviewed-by: rriggs, mchung


   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 package sun.nio.fs;
  27 
  28 import java.security.AccessController;
  29 import java.security.PrivilegedAction;
  30 import jdk.internal.misc.Unsafe;
  31 
  32 import static sun.nio.fs.WindowsConstants.*;
  33 
  34 /**
  35  * Win32 and library calls.
  36  */
  37 
  38 class WindowsNativeDispatcher {
  39     private WindowsNativeDispatcher() { }
  40 
  41     /**
  42      * HANDLE CreateEvent(
  43      *   LPSECURITY_ATTRIBUTES lpEventAttributes,
  44      *   BOOL bManualReset,
  45      *   BOOL bInitialState,
  46      *   PCTSTR lpName
  47      * );
  48      */
  49     static native long CreateEvent(boolean bManualReset, boolean bInitialState)


1136         } else {
1137             // buffer already contains the string contents
1138             if (buffer.owner() == s)
1139                 return buffer;
1140         }
1141 
1142         // copy into buffer and zero terminate
1143         char[] chars = s.toCharArray();
1144         unsafe.copyMemory(chars, Unsafe.ARRAY_CHAR_BASE_OFFSET, null,
1145             buffer.address(), (long)stringLengthInBytes);
1146         unsafe.putChar(buffer.address() + stringLengthInBytes, (char)0);
1147         buffer.setOwner(s);
1148         return buffer;
1149     }
1150 
1151     // -- native library initialization --
1152 
1153     private static native void initIDs();
1154 
1155     static {
1156         AccessController.doPrivileged(new PrivilegedAction<Void>() {
1157             public Void run() {
1158                 // nio.dll has dependency on net.dll
1159                 System.loadLibrary("net");
1160                 System.loadLibrary("nio");
1161                 return null;
1162         }});
1163         initIDs();
1164     }
1165 
1166 }


   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 package sun.nio.fs;
  27 


  28 import jdk.internal.misc.Unsafe;
  29 
  30 import static sun.nio.fs.WindowsConstants.*;
  31 
  32 /**
  33  * Win32 and library calls.
  34  */
  35 
  36 class WindowsNativeDispatcher {
  37     private WindowsNativeDispatcher() { }
  38 
  39     /**
  40      * HANDLE CreateEvent(
  41      *   LPSECURITY_ATTRIBUTES lpEventAttributes,
  42      *   BOOL bManualReset,
  43      *   BOOL bInitialState,
  44      *   PCTSTR lpName
  45      * );
  46      */
  47     static native long CreateEvent(boolean bManualReset, boolean bInitialState)


1134         } else {
1135             // buffer already contains the string contents
1136             if (buffer.owner() == s)
1137                 return buffer;
1138         }
1139 
1140         // copy into buffer and zero terminate
1141         char[] chars = s.toCharArray();
1142         unsafe.copyMemory(chars, Unsafe.ARRAY_CHAR_BASE_OFFSET, null,
1143             buffer.address(), (long)stringLengthInBytes);
1144         unsafe.putChar(buffer.address() + stringLengthInBytes, (char)0);
1145         buffer.setOwner(s);
1146         return buffer;
1147     }
1148 
1149     // -- native library initialization --
1150 
1151     private static native void initIDs();
1152 
1153     static {


1154         // nio.dll has dependency on net.dll
1155         jdk.internal.loader.BootLoader.loadLibrary("net");
1156         jdk.internal.loader.BootLoader.loadLibrary("nio");


1157         initIDs();
1158     }
1159 
1160 }
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