This is a rather mechanical refactor that uses references (&) rather than pointers (*) for parameters that are not permitted to ever be given null arguments. In effect, the onus for checking null pointers is shifted from the callee to the caller. The & type annotation makes it clear that the callee is not prepared to deal with a null pointer.
These commands invariably return true. This is more than a tad confusing to a new reader of the code. Refactor them to return void. Remove a few pieces of dead code that would log something if they ever returned false.
I was learning from @jdelong and he said that you should use
double quotes for local includes and angle brackets for library
includes. I asked why our code was the way it was, and he said he wanted
to clean it up. I beat him to it :)
Conflicts:
hphp/runtime/base/server/admin_request_handler.cpp
hphp/runtime/vm/named_entity.h
This improves both Next and Out to avoid interpreting and stepping everything between when they start and finish. Out now lets the program run free until a pseudo-breakpoint at the return site it hit. Next continues to single-step the source line being stepped over, but now lets the program run free under calls made from that line.
The logic in Next regarding "calls made from that line" is extremely generic. We don't look at, say, call opcodes and decide to do something special. Rather, when we find we're off the original source line and a frame deeper we setup a "step out" operation much like the Out command then let the program run free. When we reach our return point, we continue stepping like normal. This accounts for not just calls, but iterators, and anything else that causes more PHP to run under the original source line.
This change moves the flow control logic down in to the respective cmds: Next, Step, Out, Continue. These cmds get a crack at executing at various points in the interrupt/command processing path. These cmds now own setting up the last location filter, whether they need VM interrupts, and whether they're done or not.
This change is mostly for FB internal organizational reasons.
Building is not effected beyond the fact that the target now
lands in hphp/hhvm/hhvm rather than src/hhvm/hhvm.
Herman Venter