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Use class names instead of fields to detect Java version

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.. because some use patched JDK with backported fields.
This commit is contained in:
Trustin Lee 2012-09-01 13:08:44 +09:00
parent f2538a996d
commit 85f47d639f
1 changed files with 5 additions and 4 deletions
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9
common/src/main/java/io/netty/util/internal/DetectionUtil.java
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@ -20,8 +20,8 @@ import java.net.ServerSocket;
import java.security.AccessController; import java.security.AccessController;
import java.security.PrivilegedActionException; import java.security.PrivilegedActionException;
import java.security.PrivilegedExceptionAction; import java.security.PrivilegedExceptionAction;
import java.util.concurrent.BlockingQueue;
import java.util.concurrent.atomic.AtomicInteger; import java.util.concurrent.atomic.AtomicInteger;
import java.util.zip.Deflater;
/** /**
@ -147,10 +147,11 @@ public final class DetectionUtil {
} }
try { try {
Deflater.class.getDeclaredField("SYNC_FLUSH"); Class.forName(
return 7; "java.util.concurrent.LinkedTransferQueue", false,
BlockingQueue.class.getClassLoader());
} catch (Exception e) { } catch (Exception e) {
// Ignore return 7;
} }
return 6; return 6;