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Feature #11768 » 0002-add-a-tracepoint-for-PIC-hit-miss.patch

tenderlovemaking (Aaron Patterson), 12/03/2015 07:25 PM

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include/ruby/ruby.h
#define RUBY_EVENT_THREAD_BEGIN 0x0400
#define RUBY_EVENT_THREAD_END 0x0800
#define RUBY_EVENT_FIBER_SWITCH 0x1000
#define RUBY_EVENT_INLINE_CACHE_HIT 0x2000
#define RUBY_EVENT_INLINE_CACHE_MISS 0x4000
#define RUBY_EVENT_TRACEPOINT_ALL 0xffff
/* special events */
vm_insnhelper.c
#if OPT_INLINE_METHOD_CACHE
int i;
rb_thread_t *th = GET_THREAD();
VALUE ccid;
if (LIKELY(GET_GLOBAL_METHOD_STATE() == cc->method_state && RCLASS_SERIAL(klass) == cc->class_serial)) {
ccid = INT2NUM(cc);
EXEC_EVENT_HOOK(th, RUBY_EVENT_INLINE_CACHE_HIT, recv, 0, 0, ccid);
/* cache hit! */
return;
# if OPT_POLYMORPHIC_INLINE_METHOD_CACHE
......
cc->me = cc->mes[i];
cc->class_serial = cc->class_serials[i];
cc->call = cc->calls[i];
ccid = INT2NUM(cc);
EXEC_EVENT_HOOK(th, RUBY_EVENT_INLINE_CACHE_HIT, recv, 0, 0, ccid);
/* cache hit! */
return;
}
......
VM_ASSERT(callable_method_entry_p(cc->me));
cc->call = vm_call_general;
#if OPT_INLINE_METHOD_CACHE
ccid = INT2NUM(cc);
EXEC_EVENT_HOOK(th, RUBY_EVENT_INLINE_CACHE_MISS, recv, 0, 0, ccid);
cc->method_state = GET_GLOBAL_METHOD_STATE();
cc->class_serial = RCLASS_SERIAL(klass);
vm_trace.c
C(thread_end, THREAD_END);
C(fiber_switch, FIBER_SWITCH);
C(specified_line, SPECIFIED_LINE);
C(inline_cache_hit, INLINE_CACHE_HIT);
C(inline_cache_miss, INLINE_CACHE_MISS);
case RUBY_EVENT_LINE | RUBY_EVENT_SPECIFIED_LINE: CONST_ID(id, "line"); return id;
#undef C
default:
......
C(specified_line, SPECIFIED_LINE);
C(a_call, A_CALL);
C(a_return, A_RETURN);
C(inline_cache_hit, INLINE_CACHE_HIT);
C(inline_cache_miss, INLINE_CACHE_MISS);
#undef C
rb_raise(rb_eArgError, "unknown event: %"PRIsVALUE, rb_sym2str(sym));
}
......
}
VALUE
rb_tracearg_callcache_id(rb_trace_arg_t *trace_arg)
{
if (trace_arg->event & (RUBY_EVENT_INLINE_CACHE_HIT | RUBY_EVENT_INLINE_CACHE_MISS)) {
/* ok */
}
else {
rb_raise(rb_eRuntimeError, "not supported by this event");
}
if (trace_arg->data == Qundef) {
rb_bug("tp_attr_return_value_m: unreachable");
}
return trace_arg->data;
}
VALUE
rb_tracearg_return_value(rb_trace_arg_t *trace_arg)
{
if (trace_arg->event & (RUBY_EVENT_RETURN | RUBY_EVENT_C_RETURN | RUBY_EVENT_B_RETURN)) {
......
}
/*
* Return call cache id for +:inline_cache_hit+ and +:inline_cache_miss+
*/
static VALUE
tracepoint_callcache_id(VALUE tpval)
{
return rb_tracearg_callcache_id(get_trace_arg());
}
/*
* Value from exception raised on the +:raise+ event
*/
static VALUE
......
rb_define_method(rb_cTracePoint, "self", tracepoint_attr_self, 0);
rb_define_method(rb_cTracePoint, "return_value", tracepoint_attr_return_value, 0);
rb_define_method(rb_cTracePoint, "raised_exception", tracepoint_attr_raised_exception, 0);
rb_define_method(rb_cTracePoint, "callcache_id", tracepoint_callcache_id, 0);
rb_define_singleton_method(rb_cTracePoint, "stat", tracepoint_stat_s, 0);
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