27 

    27 

    28 package java.nio;

    28 package java.nio;

    29 

    29 

    30 import sun.misc.Cleaner;

    30 import sun.misc.Cleaner;

    31 import sun.misc.Unsafe;

    31 import sun.misc.Unsafe;

    32 import sun.nio.ch.DirectBuffer;

    33 import sun.nio.ch.DirectBuffer;

    33 

    34 

    34 

    35 

    35 class Direct$Type$Buffer$RW$$BO$

    36 class Direct$Type$Buffer$RW$$BO$

    36 #if[rw]

    37 #if[rw]

   112     // Primary constructor

   113     // Primary constructor

   113     //

   114     //

   114     Direct$Type$Buffer$RW$(int cap) {                   // package-private

   115     Direct$Type$Buffer$RW$(int cap) {                   // package-private

   115 #if[rw]

   116 #if[rw]

   116         super(-1, 0, cap, cap, false);

   117         super(-1, 0, cap, cap, false);

   117         int ps = Bits.pageSize();

   119         int ps = Bits.pageSize();

   119         Bits.reserveMemory(size, cap);

   121         Bits.reserveMemory(size, cap);

   120 

   122 

   121         long base = 0;

   123         long base = 0;

   122         try {

   124         try {

   123             base = unsafe.allocateMemory(size);

   125             base = unsafe.allocateMemory(size);

   124         } catch (OutOfMemoryError x) {

   126         } catch (OutOfMemoryError x) {

   125             Bits.unreserveMemory(size, cap);

   127             Bits.unreserveMemory(size, cap);

   126             throw x;

   128             throw x;

   127         }

   129         }

   128         unsafe.setMemory(base, size, (byte) 0);

   130         unsafe.setMemory(base, size, (byte) 0);

   130             // Round up to page boundary

   132             // Round up to page boundary

   131             address = base + ps - (base & (ps - 1));

   133             address = base + ps - (base & (ps - 1));

   132         } else {

   134         } else {

   133             address = base;

   135             address = base;

   134         }

   136         }