C++ methodHandle::name_and_sig_as_C_string方法代码示例

void CompiledDirectStaticCall::set_to_interpreted(const methodHandle& callee, address entry) {
  address stub = find_stub(/*is_aot*/ false);
  guarantee(stub != NULL, "stub not found");

  if (TraceICs) {
    ResourceMark rm;
    tty->print_cr("[email protected]" INTPTR_FORMAT ": set_to_interpreted %s",
                  p2i(instruction_address()),
                  callee->name_and_sig_as_C_string());
  }

  // Creation also verifies the object.
  NativeMovConstReg* method_holder = nativeMovConstReg_at(stub + NativeCall::get_IC_pos_in_java_to_interp_stub());
  NativeJump*        jump          = nativeJump_at(method_holder->next_instruction_address());

  // A generated lambda form might be deleted from the Lambdaform
  // cache in MethodTypeForm.  If a jit compiled lambdaform method
  // becomes not entrant and the cache access returns null, the new
  // resolve will lead to a new generated LambdaForm.

  assert(method_holder->data() == 0 || method_holder->data() == (intptr_t)callee() || callee->is_compiled_lambda_form(),
         "a) MT-unsafe modification of inline cache");
  assert(jump->jump_destination() == (address)-1 || jump->jump_destination() == entry,
         "b) MT-unsafe modification of inline cache");

  // Update stub.
  method_holder->set_data((intptr_t)callee());
  jump->set_jump_destination(entry);

  // Update jump to call.
  set_destination_mt_safe(stub);
}

void CompiledStaticCall::set_to_interpreted(methodHandle callee, address entry) {
  address stub = find_stub();
  guarantee(stub != NULL, "stub not found");

  if (TraceICs) {
    ResourceMark rm;
    tty->print_cr("[email protected]" INTPTR_FORMAT ": set_to_interpreted %s",
                  p2i(instruction_address()),
                  callee->name_and_sig_as_C_string());
  }

  // Creation also verifies the object.
  NativeMovConstReg* method_holder = nativeMovConstReg_at(stub);
  NativeJump*        jump          = nativeJump_at(method_holder->next_instruction_address());

  assert(method_holder->data() == 0 || method_holder->data() == (intptr_t)callee(),
         "a) MT-unsafe modification of inline cache");
  assert(jump->jump_destination() == (address)-1 || jump->jump_destination() == entry,
         "b) MT-unsafe modification of inline cache");

  // Update stub.
  method_holder->set_data((intptr_t)callee());
  jump->set_jump_destination(entry);

  // Update jump to call.
  set_destination_mt_safe(stub);
}

address NativeLookup::lookup_base(methodHandle method, bool& in_base_library, TRAPS) {
  address entry = NULL;
  ResourceMark rm(THREAD);

  entry = lookup_entry(method, in_base_library, THREAD);
  if (entry != NULL) return entry;

  // standard native method resolution has failed.  Check if there are any
  // JVM TI prefixes which have been applied to the native method name.
  entry = lookup_entry_prefixed(method, in_base_library, THREAD);
  if (entry != NULL) return entry;

  // Native function not found, throw UnsatisfiedLinkError
  THROW_MSG_0(vmSymbols::java_lang_UnsatisfiedLinkError(),
              method->name_and_sig_as_C_string());
}

// Print an event.
void SimpleThresholdPolicy::print_event(EventType type, methodHandle mh, methodHandle imh,
                                        int bci, CompLevel level) {
  bool inlinee_event = mh() != imh();

  ttyLocker tty_lock;
  tty->print("%lf: [", os::elapsedTime());

  switch(type) {
  case CALL:
    tty->print("call");
    break;
  case LOOP:
    tty->print("loop");
    break;
  case COMPILE:
    tty->print("compile");
    break;
  case REMOVE_FROM_QUEUE:
    tty->print("remove-from-queue");
    break;
  case UPDATE_IN_QUEUE:
    tty->print("update-in-queue");
    break;
  case REPROFILE:
    tty->print("reprofile");
    break;
  case MAKE_NOT_ENTRANT:
    tty->print("make-not-entrant");
    break;
  default:
    tty->print("unknown");
  }

  tty->print(" level=%d ", level);

  ResourceMark rm;
  char *method_name = mh->name_and_sig_as_C_string();
  tty->print("[%s", method_name);
  if (inlinee_event) {
    char *inlinee_name = imh->name_and_sig_as_C_string();
    tty->print(" [%s]] ", inlinee_name);
  }
  else tty->print("] ");
  tty->print("@%d queues=%d,%d", bci, CompileBroker::queue_size(CompLevel_full_profile),
                                      CompileBroker::queue_size(CompLevel_full_optimization));

  print_specific(type, mh, imh, bci, level);

  if (type != COMPILE) {
    print_counters("", mh);
    if (inlinee_event) {
      print_counters("inlinee ", imh);
    }
    tty->print(" compilable=");
    bool need_comma = false;
    if (!mh->is_not_compilable(CompLevel_full_profile)) {
      tty->print("c1");
      need_comma = true;
    }
    if (!mh->is_not_osr_compilable(CompLevel_full_profile)) {
      if (need_comma) tty->print(",");
      tty->print("c1-osr");
      need_comma = true;
    }
    if (!mh->is_not_compilable(CompLevel_full_optimization)) {
      if (need_comma) tty->print(",");
      tty->print("c2");
      need_comma = true;
    }
    if (!mh->is_not_osr_compilable(CompLevel_full_optimization)) {
      if (need_comma) tty->print(",");
      tty->print("c2-osr");
    }
    tty->print(" status=");
    if (mh->queued_for_compilation()) {
      tty->print("in-queue");
    } else tty->print("idle");
  }
  tty->print_cr("]");
}