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Diffstat (limited to 'ChangeLog')
| -rw-r--r-- | ChangeLog | 29 |
1 files changed, 29 insertions, 0 deletions
@@ -1,3 +1,32 @@ +Tue Oct 23 12:57:29 2012 Koichi Sasada <ko1@atdot.net> + + * 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. + Tue Oct 23 06:21:05 2012 Aaron Patterson <aaron@tenderlovemaking.com> * ext/psych/parser.c: just get the constant defined in Ruby. |