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 jdk.internal.access;
27
28 import jdk.internal.access.foreign.MemorySegmentProxy;
29
30 import java.nio.Buffer;
31 import java.nio.ByteBuffer;
32
33 public interface JavaNioAccess {
34 /**
35 * Provides access to information on buffer usage.
36 */
37 interface BufferPool {
38 String getName();
39 long getCount();
40 long getTotalCapacity();
41 long getMemoryUsed();
42 }
43 BufferPool getDirectBufferPool();
44
45 /**
46 * Constructs a direct ByteBuffer referring to the block of memory starting
47 * at the given memory address and extending {@code cap} bytes.
48 * The {@code ob} parameter is an arbitrary object that is attached
49 * to the resulting buffer.
50 * Used by {@code jdk.internal.foreignMemorySegmentImpl}.
51 */
52 ByteBuffer newDirectByteBuffer(long addr, int cap, Object obj, MemorySegmentProxy segment);
53
54 /**
55 * Constructs an heap ByteBuffer with given backing array, offset, capacity and segment.
56 * Used by {@code jdk.internal.foreignMemorySegmentImpl}.
57 */
58 ByteBuffer newHeapByteBuffer(byte[] hb, int offset, int capacity, MemorySegmentProxy segment);
59
60 /**
61 * Used by {@code jdk.internal.foreign.Utils}.
62 */
|
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 jdk.internal.access;
27
28 import jdk.internal.access.foreign.MemorySegmentProxy;
29 import jdk.internal.misc.VM.BufferPool;
30
31 import java.nio.Buffer;
32 import java.nio.ByteBuffer;
33
34 public interface JavaNioAccess {
35
36 /**
37 * Used by {@code jdk.internal.misc.VM}.
38 */
39 BufferPool getDirectBufferPool();
40
41 /**
42 * Constructs a direct ByteBuffer referring to the block of memory starting
43 * at the given memory address and extending {@code cap} bytes.
44 * The {@code ob} parameter is an arbitrary object that is attached
45 * to the resulting buffer.
46 * Used by {@code jdk.internal.foreignMemorySegmentImpl}.
47 */
48 ByteBuffer newDirectByteBuffer(long addr, int cap, Object obj, MemorySegmentProxy segment);
49
50 /**
51 * Constructs an heap ByteBuffer with given backing array, offset, capacity and segment.
52 * Used by {@code jdk.internal.foreignMemorySegmentImpl}.
53 */
54 ByteBuffer newHeapByteBuffer(byte[] hb, int offset, int capacity, MemorySegmentProxy segment);
55
56 /**
57 * Used by {@code jdk.internal.foreign.Utils}.
58 */
|