C++ (Cpp) interpreter_super_lookup示例

示例#1

文件： interpretedIC.cpp 项目： jirkadanek/Strongtalk

oop* InterpretedIC::inline_cache_miss() {
  NoGCVerifier noGC;

  // get ic info
  frame           f         = DeltaProcess::active()->last_frame();
  InterpretedIC*  ic        = f.current_interpretedIC();
  Bytecodes::Code send_code = ic->send_code();

  oop receiver = ic->argument_spec() == Bytecodes::args_only // Are we at a self or super send?
    ? f.receiver()                                //  yes: take receiver of frame
    : f.expr(ic->nof_arguments());                //  no:  take receiver pushed before the arguments

  // do the lookup
  klassOop klass = receiver->klass();
  LookupResult result = Bytecodes::is_super_send(send_code)
    ? interpreter_super_lookup(ic->selector())
    : interpreter_normal_lookup(klass, ic->selector());

  // tracing
  if (TraceInlineCacheMiss) {
    std->print("IC miss, ");  trace_inline_cache_miss(ic, klass, result);
  }
  // handle the lookup result
  if (!result.is_empty()) {
    update_inline_cache(ic, &f, ic->send_code(), klass, result);
    return NULL;
  } else {
    return cacheMissResult(does_not_understand(receiver, ic, &f), 
      ic->nof_arguments() + (ic->argument_spec() == Bytecodes::args_only ? 0 : 1))->objs(1);
  }
}

示例#2

文件： interpretedIC.cpp 项目： sebkirche/strongtalk

void InterpretedIC::inline_cache_miss() {
  NoGCVerifier noGC;  

  // get ic info
  frame           f         = DeltaProcess::active()->last_frame();
  InterpretedIC*  ic        = f.current_interpretedIC();
  Bytecodes::Code send_code = ic->send_code();

  oop receiver = ic->argument_spec() == Bytecodes::args_only // Are we at a self or super send?
               ? f.receiver()                                //  yes: take receiver of frame
	       : f.expr(ic->nof_arguments());                //  no:  take receiver pushed before the arguments

  // do the lookup
  klassOop klass = receiver->klass();
  LookupResult result = Bytecodes::is_super_send(send_code)
                      ? interpreter_super_lookup(ic->selector())
                      : interpreter_normal_lookup(klass, ic->selector());

  // tracing
  if (TraceMessageSend) std->print_cr("inline cache miss");
  if (TraceLookup)      trace_inline_cache_miss(ic, klass, result);

  // handle the lookup result
  if (!result.is_empty()) 
    update_inline_cache(ic, &f, send_code, klass, result);
  else {
    does_not_understand(receiver, ic, &f);
    // If the program continues we'll redo the inline_cache_miss
    if (!have_nlr_through_C) inline_cache_miss();
  }
}