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<body class='hmmessage'><div dir='ltr'>Mark,<br><br>You are listed as an author of java.lang.ref classes. So you must know more than others. Could you shed light on this?<br><br>Thank you,<br>Dmytro<br><br><div><hr id="stopSpelling">From: dmytro_sheyko@hotmail.com<br>To: hotspot-gc-dev@openjdk.java.net; core-libs-dev@openjdk.java.net<br>Subject: PhantomReference: why not cleared by GC when enqueued?<br>Date: Wed, 29 May 2013 14:45:54 +0300<br><br>
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<div dir="ltr">Hello,<br><br>Why phantom references are not automatically cleared by the garbage collector as they are enqueued?<br><br>Keeping phantom reachable objects in heap has some drawbacks:<br>1. At least 2 GC are required in order to reclaim them, even in case when application code pulls references from reference queue and clears them promptly.<br>2. GC pauses are increased since phantom reachable objects are still to be marked.<br><br>On the other hand, benefits are not obvious. How we can use referent if it's not accessible?<br><br>Regards,<br>Dmytro<br><br> </div></div> </div></body>
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