facebook/hhvm — pull request #3027 by rrh (2014-06-24 19:53:51+00:00)
Title: refactor ext_hotprofiler.cpp into new file ext_hotprofiler.h

Following existing coding conventions, split out a .h file from ext_hotprofiler.cpp. In this way, 3rd party profilers can be written and loaded as DSOs.