vm_core.h, vm_insnhelper.c, vm_eval.c (OPT_CALL_CFUNC_WITHOUT_FRAME):
add a new otpimization and its macro OPT_CALL_CFUNC_WITHOUT_FRAME'. This optimization makes all cfunc method calls frameless', which
is fster than ordinal cfunc method call.
If frame' is needed (for example, it calls another method with rb_funcall()'), then build a frame. In other words, this
optimization delays frame building.
However, to delay the frame building, we need additional overheads:
(1) Store the last call information.
(2) Check the delayed frame buidling before the frame is needed.
(3) Overhead to build a delayed frame.
rb_thread_t::passed_ci is storage of delayed cfunc call information.
(1) is lightweight because it is only 1 assignment to passed_ci'. To achieve (2), we modify GET_THREAD() to check passed_ci' every
time. It causes 10% overhead on my envrionment.
This optimization only works for cfunc methods which do not need
their `frame'.
After evaluation on my environment, this optimization does not
effective every time. Because of this evaluation results, this
optimization is disabled at default.
vm_insnhelper.c, vm.c: add VM_PROFILE* macros to measure behaviour
of VM internals. I will extend this feature.
vm_method.c, method.h: change parameters of the invoker' function. Receive func' pointer as the first parameter.
Added by ko1 (Koichi Sasada) over 12 years ago
add a new otpimization and its macro
OPT_CALL_CFUNC_WITHOUT_FRAME'. This optimization makes all cfunc method callsframeless', whichis fster than ordinal cfunc method call.
If
frame' is needed (for example, it calls another method withrb_funcall()'), then build a frame. In other words, thisoptimization delays frame building.
However, to delay the frame building, we need additional overheads:
(1) Store the last call information.
(2) Check the delayed frame buidling before the frame is needed.
(3) Overhead to build a delayed frame.
rb_thread_t::passed_ci is storage of delayed cfunc call information.
(1) is lightweight because it is only 1 assignment to
passed_ci'. To achieve (2), we modify GET_THREAD() to checkpassed_ci' everytime. It causes 10% overhead on my envrionment.
This optimization only works for cfunc methods which do not need
their `frame'.
After evaluation on my environment, this optimization does not
effective every time. Because of this evaluation results, this
optimization is disabled at default.
of VM internals. I will extend this feature.
invoker' function. Receivefunc' pointer as the first parameter.git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@37293 b2dd03c8-39d4-4d8f-98ff-823fe69b080e