$B!!$5$5$@$G$9!%(B
$B!!:G6a!$(B[ruby-core:45949] (1) $B4XO"$G(B trace_func
$B2s$j$N<BAu$r8+$F$$$k$N(B
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*1: [ruby-core:45949] Re: [ruby-trunk - Feature #6649] Add new
set_trace_func events “b-call”, “b-return”
$B%Y%s%A%^!<%/!’(B
max = 10_000_000
require ‘benchmark’
Benchmark.bm{|x|
x.report{
max.times{
a = 1
b = 2
}
}
set_null_profiler
x.report{
max.times{
a = 1
b = 2
}
}
}
C code
rb_define_global_function(“set_null_profiler”, set_null_profiler, 0);
static void
null_func(rb_event_flag_t evflag, VALUE data, VALUE self, ID mid, VALUE
klass)
{
}
static VALUE
set_null_profiler(VALUE self)
{
rb_add_event_hook(null_func, RUBY_EVENT_LINE, 0);
return Qnil;
}
$B7k2L!’(B
user system total real
4.640000 0.140000 4.780000 ( 4.788095) #0) $B2?$bL5$7(B
10.720000 0.020000 10.740000 ( 10.740693) #1) null trace $B$"$j(B
6.810000 0.000000 6.810000 ( 6.816267) #2) n/trace w/o setjmp
6.260000 0.010000 6.270000 ( 6.265966) #3) w/o exec_event_hooks
5.430000 0.000000 5.430000 ( 5.426709) #4) w/o thread_exec_e…
$B"((BVirtual box $B>e$N$F$-$H!<$JB,Dj$G$9!%(B
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rb_threadptr_exec_event_hooks()
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$B$H$$$&=hM}$r$9$k>l9g$O!$:FF~$j$J$I$O$7$=$&$K$J$$$N$G!$(B(a)
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cfp
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(1) $B:FF~$j$7$J$$$h$&$K$9$k=hM}$J$I$r>J$$$?%o%$%k%I$J(B hook
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(3) $B:FF~$j$J$I$r$9$k$h$&$J2aJ]8n$J(B hook $B$rEPO?$G$-$k$h$&$K$9$k(B
$B$3$l$O!$(B(1) $B$N>e$K8_49@-$N$?$a$K:n$k!%(B
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