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BTrace: DTrace for Java… ish

Thanks to Adam Leventhal for this story

DTrace first peered into Java in early 2005 thanks to an early prototype by Jarod Jenson that led eventually to the inclusion of USDT probes in the HotSpot JVM. If you want to see where, say, the java.net.SocketOutputStream.write() method is called, you can simply run this DTrace script: hotspot$target:::method-entry /copyinstr(arg1, arg2) == "java/net/SocketOutputStream" && copyinstr(arg3, [...]

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