Hi,<div><br></div><div>Proper escape analysis can eliminate the need of GC. I cannot understand why Oracle (Sun before oracle) choose to carry the burden of the GC. This creates:</div><div><ul><li>Memory footprint</li><li>
Processing footprint</li><li>GC pause</li></ul></div><div>With proper escape analysis and allocating in the stack GC can be eliminated in most cases. Also finalising can be eliminated.</div><div><br></div><div>Annotations can be used what point exactly the resource is released. This will take only fraction of nanoseconds but this also will be known.</div>
<div><br></div><div>Also collection can happen in a deferred mode as this is what needs to be GCed. Ideally this should be reserved for IO pause applications which can run the GC thread on pause. </div><div><br></div><div>
Suminda<br clear="all"><div><div dir="ltr"><div><span style="font-family:'arial narrow',sans-serif">--</span></div><span style="font-family:'arial narrow',sans-serif">Suminda Sirinath Salpitikorala Dharmasena</span><span style="font-family:'arial narrow',sans-serif">, B.Sc. Comp. & I.S. (Hon.) Lond., P.G.Dip. Ind. Maths. J'Pura, MIEEE, MACM</span><span style="font-family:'arial narrow',sans-serif">, CEO </span><span style="font-family:'comic sans ms',sans-serif">Sakrīō!</span><span style="font-family:'arial narrow',sans-serif"> </span><span style="font-family:'arial narrow',sans-serif">▣ </span><b style="font-family:'arial narrow',sans-serif"><i>Address</i></b><span style="font-family:'arial narrow',sans-serif">: 6G • 1st Lane • Pagoda Road • Nugegoda 10250 • Sri Lanka. ▣ </span><b style="font-family:'arial narrow',sans-serif"><i>Tele</i></b><span style="font-family:'arial narrow',sans-serif">: +94-(0)11-5 864614 / 5 875614 / 2 825908 ▣ <b><i>Web</i></b>: <a href="http://www.sakrio.com" target="_blank">http://www.sakrio.com</a> </span><span style="font-family:'arial narrow',sans-serif">▣</span><br style="font-family:'arial narrow',sans-serif">
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<br><br><div class="gmail_quote">On 22 April 2013 19:45, Ryan Gardner <span dir="ltr"><<a href="mailto:ryebrye@gmail.com" target="_blank">ryebrye@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div dir="ltr"><div><div>On Fri, Apr 19, 2013 at 6:04 AM, Suminda Dharmasena <span dir="ltr"><<a href="mailto:sirinath@sakrio.com" target="_blank">sirinath@sakrio.com</a>></span> wrote:<br></div></div><div class="gmail_extra">
<div class="gmail_quote"><div><div>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Also if the programmer fails to wisely GC using API / Annotations then the fallback is the default GC mechanism. This way there will be no memory leaks. Also objects which are GCed will be objects that can be GCed. Live / referenced objects which escape the explicit GC context will not be GCed. <div>
<br></div><div>The objective is that:</div><div><ul><li>The GC check happens at define points in code</li><li>GC happens at define points if possible, else fall back to the system GC mechanism</li></ul></div></blockquote>
</div></div><div>How will this work with multithreaded environments like a web server? </div><div><br></div><div>The stop-the-world phases of GC by definition stop more than just one thread?</div><div><br></div>
<div>Also this seems very JVM vendor specific - I can't imagine the Azul guys (who market their JVM as if GC pauses don't exist at all on their VM) would care about this, nor would the IBM guys likely care. </div>
<div><br></div><div>The specific annotations proposed also do not follow the best practice for naming annotations - they explicitly define a specific behavior to take as a result of the annotation being applied. </div>
<div><br></div><div>I'm just a community member, and not a hotspot engineer or contributor - but I can wholeheartedly say that I would never use these annotations and I would never use code from any open source project that littered their project with these annotations. </div>
<div><br></div><div> </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
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