Exemplo n.º 1
0
void ciMethodData::load_data() {
  MethodData* mdo = get_MethodData();
  if (mdo == NULL) {
    return;
  }

  // To do: don't copy the data if it is not "ripe" -- require a minimum #
  // of invocations.

  // Snapshot the data -- actually, take an approximate snapshot of
  // the data.  Any concurrently executing threads may be changing the
  // data as we copy it.
  Copy::disjoint_words((HeapWord*) mdo,
                       (HeapWord*) &_orig,
                       sizeof(_orig) / HeapWordSize);
  Arena* arena = CURRENT_ENV->arena();
  _data_size = mdo->data_size();
  _extra_data_size = mdo->extra_data_size();
  int total_size = _data_size + _extra_data_size;
  _data = (intptr_t *) arena->Amalloc(total_size);
  Copy::disjoint_words((HeapWord*) mdo->data_base(), (HeapWord*) _data, total_size / HeapWordSize);

  // Traverse the profile data, translating any oops into their
  // ci equivalents.
  ResourceMark rm;
  ciProfileData* ci_data = first_data();
  ProfileData* data = mdo->first_data();
  while (is_valid(ci_data)) {
    ci_data->translate_from(data);
    ci_data = next_data(ci_data);
    data = mdo->next_data(data);
  }
  if (mdo->parameters_type_data() != NULL) {
    _parameters = data_layout_at(mdo->parameters_type_data_di());
    ciParametersTypeData* parameters = new ciParametersTypeData(_parameters);
    parameters->translate_from(mdo->parameters_type_data());
  }

  load_extra_data();

  // Note:  Extra data are all BitData, and do not need translation.
  _current_mileage = MethodData::mileage_of(mdo->method());
  _invocation_counter = mdo->invocation_count();
  _backedge_counter = mdo->backedge_count();
  _state = mdo->is_mature()? mature_state: immature_state;

  _eflags = mdo->eflags();
  _arg_local = mdo->arg_local();
  _arg_stack = mdo->arg_stack();
  _arg_returned  = mdo->arg_returned();
#ifndef PRODUCT
  if (ReplayCompiles) {
    ciReplay::initialize(this);
  }
#endif
}
Exemplo n.º 2
0
// Determine is a method is mature.
bool SimpleThresholdPolicy::is_mature(Method* method) {
  if (is_trivial(method)) return true;
  MethodData* mdo = method->method_data();
  if (mdo != NULL) {
    int i = mdo->invocation_count();
    int b = mdo->backedge_count();
    double k = ProfileMaturityPercentage / 100.0;
    return call_predicate_helper<CompLevel_full_profile>(i, b, k, method) ||
           loop_predicate_helper<CompLevel_full_profile>(i, b, k, method);
  }
  return false;
}
Exemplo n.º 3
0
// Determine if a method should be compiled with a normal entry point at a different level.
CompLevel AdvancedThresholdPolicy::call_event(Method* method, CompLevel cur_level) {
  CompLevel osr_level = MIN2((CompLevel) method->highest_osr_comp_level(),
                             common(&AdvancedThresholdPolicy::loop_predicate, method, cur_level, true));
  CompLevel next_level = common(&AdvancedThresholdPolicy::call_predicate, method, cur_level);

  // If OSR method level is greater than the regular method level, the levels should be
  // equalized by raising the regular method level in order to avoid OSRs during each
  // invocation of the method.
  if (osr_level == CompLevel_full_optimization && cur_level == CompLevel_full_profile) {
    MethodData* mdo = method->method_data();
    guarantee(mdo != NULL, "MDO should not be NULL");
    if (mdo->invocation_count() >= 1) {
      next_level = CompLevel_full_optimization;
    }
  } else {
    next_level = MAX2(osr_level, next_level);
  }
  return next_level;
}
Exemplo n.º 4
0
void SimpleThresholdPolicy::print_counters(const char* prefix, methodHandle mh) {
  int invocation_count = mh->invocation_count();
  int backedge_count = mh->backedge_count();
  MethodData* mdh = mh->method_data();
  int mdo_invocations = 0, mdo_backedges = 0;
  int mdo_invocations_start = 0, mdo_backedges_start = 0;
  if (mdh != NULL) {
    mdo_invocations = mdh->invocation_count();
    mdo_backedges = mdh->backedge_count();
    mdo_invocations_start = mdh->invocation_count_start();
    mdo_backedges_start = mdh->backedge_count_start();
  }
  tty->print(" %stotal=%d,%d %smdo=%d(%d),%d(%d)", prefix,
      invocation_count, backedge_count, prefix,
      mdo_invocations, mdo_invocations_start,
      mdo_backedges, mdo_backedges_start);
  tty->print(" %smax levels=%d,%d", prefix,
      mh->highest_comp_level(), mh->highest_osr_comp_level());
}
Exemplo n.º 5
0
// Determine if a method should be compiled with a normal entry point at a different level.
CompLevel SimpleThresholdPolicy::call_event(Method* method,  CompLevel cur_level, JavaThread* thread) {
  CompLevel osr_level = MIN2((CompLevel) method->highest_osr_comp_level(),
                             common(&SimpleThresholdPolicy::loop_predicate, method, cur_level));
  CompLevel next_level = common(&SimpleThresholdPolicy::call_predicate, method, cur_level);

  // If OSR method level is greater than the regular method level, the levels should be
  // equalized by raising the regular method level in order to avoid OSRs during each
  // invocation of the method.
  if (osr_level == CompLevel_full_optimization && cur_level == CompLevel_full_profile) {
    MethodData* mdo = method->method_data();
    guarantee(mdo != NULL, "MDO should not be NULL");
    if (mdo->invocation_count() >= 1) {
      next_level = CompLevel_full_optimization;
    }
  } else {
    next_level = MAX2(osr_level, next_level);
  }
#if INCLUDE_JVMCI
  if (UseJVMCICompiler) {
    next_level = JVMCIRuntime::adjust_comp_level(method, false, next_level, thread);
  }
#endif
  return next_level;
}