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25 |
25 |
26 package sun.nio.ch; |
26 package sun.nio.ch; |
27 |
27 |
28 import java.io.FileDescriptor; |
28 import java.io.FileDescriptor; |
29 import java.io.IOException; |
29 import java.io.IOException; |
30 import java.security.PrivilegedAction; |
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31 import jdk.internal.misc.SharedSecrets; |
30 import jdk.internal.misc.SharedSecrets; |
32 import jdk.internal.misc.JavaIOFileDescriptorAccess; |
31 import jdk.internal.misc.JavaIOFileDescriptorAccess; |
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32 import sun.security.action.GetPropertyAction; |
33 |
33 |
34 class FileDispatcherImpl extends FileDispatcher { |
34 class FileDispatcherImpl extends FileDispatcher { |
35 |
35 |
36 private static final JavaIOFileDescriptorAccess fdAccess = |
36 private static final JavaIOFileDescriptorAccess fdAccess = |
37 SharedSecrets.getJavaIOFileDescriptorAccess(); |
37 SharedSecrets.getJavaIOFileDescriptorAccess(); |
117 boolean transferToDirectlyNeedsPositionLock() { |
117 boolean transferToDirectlyNeedsPositionLock() { |
118 return true; |
118 return true; |
119 } |
119 } |
120 |
120 |
121 static boolean isFastFileTransferRequested() { |
121 static boolean isFastFileTransferRequested() { |
122 String fileTransferProp = java.security.AccessController.doPrivileged( |
122 String fileTransferProp = GetPropertyAction |
123 new PrivilegedAction<String>() { |
123 .getProperty("jdk.nio.enableFastFileTransfer"); |
124 @Override |
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125 public String run() { |
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126 return System.getProperty("jdk.nio.enableFastFileTransfer"); |
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127 } |
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128 }); |
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129 boolean enable; |
124 boolean enable; |
130 if ("".equals(fileTransferProp)) { |
125 if ("".equals(fileTransferProp)) { |
131 enable = true; |
126 enable = true; |
132 } else { |
127 } else { |
133 enable = Boolean.parseBoolean(fileTransferProp); |
128 enable = Boolean.parseBoolean(fileTransferProp); |