Quote: DTrace actions execute in a virtual machine; no backwards branches, only defined subroutine calls, no arbitrary stores; arbitrary loads, including unmapped memory

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In designing DTrace, we wanted to … [make] actions entirely programmable. … to allow programmable actions to be executed safely … act as a target instruction set for a … [p. 32] Our virtual instruction set has no backwards … Importantly, the virtual machine does allow arbitrary loads; … are caught, flagged, and handled gracefully.   Google-1   Google-2

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Topic: virtual machine (13 items)