text: /*
   * This file is open source software, licensed to you under the terms
   * of the Apache License, Version 2.0 (the "License").  See the NOTICE file
   * distributed with this work for additional information regarding copyright
   * ownership.  You may not use this file except in compliance with the License.
   *
   * You may obtain a copy of the License at
   *
   *   http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing,
   * software distributed under the License is distributed on an
   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
   * KIND, either express or implied.  See the License for the
   * specific language governing permissions and limitations
   * under the License.
   */
  /*
   * Copyright (C) 2015 Cloudius Systems, Ltd.
   */
  
  #include "tests/test-utils.hh"
  
  #include "core/distributed.hh"
  #include "core/shared_ptr.hh"
  #include "core/thread.hh"
  #include "core/sleep.hh"
  
  using namespace seastar;
  
  SEASTAR_TEST_CASE(make_foreign_ptr_from_lw_shared_ptr) {
      auto p = make_foreign(make_lw_shared<sstring>("foo"));
      BOOST_REQUIRE(p->size() == 3);
      return make_ready_future<>();
  }
  
  SEASTAR_TEST_CASE(make_foreign_ptr_from_shared_ptr) {
      auto p = make_foreign(make_shared<sstring>("foo"));
      BOOST_REQUIRE(p->size() == 3);
      return make_ready_future<>();
  }
  
  
  SEASTAR_TEST_CASE(foreign_ptr_copy_test) {
      return seastar::async([] {
          auto ptr = make_foreign(make_shared<sstring>("foo"));
          BOOST_REQUIRE(ptr->size() == 3);
          auto ptr2 = ptr.copy().get0();
          BOOST_REQUIRE(ptr2->size() == 3);
      });
  }
  
  SEASTAR_TEST_CASE(foreign_ptr_get_test) {
      auto p = make_foreign(std::make_unique<sstring>("foo"));
      BOOST_REQUIRE_EQUAL(p.get(), &*p);
      return make_ready_future<>();
  };
  
  SEASTAR_TEST_CASE(foreign_ptr_release_test) {
      auto p = make_foreign(std::make_unique<sstring>("foo"));
      auto raw_ptr = p.get();
      BOOST_REQUIRE(bool(p));
      BOOST_REQUIRE(p->size() == 3);
      auto released_p = p.release();
      BOOST_REQUIRE(!bool(p));
      BOOST_REQUIRE(released_p->size() == 3);
      BOOST_REQUIRE_EQUAL(raw_ptr, released_p.get());
      return make_ready_future<>();
  }
  
  SEASTAR_TEST_CASE(foreign_ptr_reset_test) {
      auto fp = make_foreign(std::make_unique<sstring>("foo"));
      BOOST_REQUIRE(bool(fp));
      BOOST_REQUIRE(fp->size() == 3);
  
      fp.reset(std::make_unique<sstring>("foobar"));
      BOOST_REQUIRE(bool(fp));
      BOOST_REQUIRE(fp->size() == 6);
  
      fp.reset();
      BOOST_REQUIRE(!bool(fp));
      return make_ready_future<>();
  }
  
  class dummy {
      unsigned _cpu;
  public:
      dummy() : _cpu(engine().cpu_id()) { }
      ~dummy() { BOOST_REQUIRE_EQUAL(_cpu, engine().cpu_id()); }
  };
  
  SEASTAR_TEST_CASE(foreign_ptr_cpu_test) {
      if (smp::count == 1) {
          std::cerr << "Skipping multi-cpu foreign_ptr tests. Run with --smp=2 to test multi-cpu delete and reset.";
          return make_ready_future<>();
      }
  
      using namespace std::chrono_literals;
  
      return seastar::async([] {
          auto p = smp::submit_to(1, [] {
              return make_foreign(std::make_unique<dummy>());
          }).get0();
  
          p.reset(std::make_unique<dummy>());
      }).then([] {
          // Let ~foreign_ptr() take its course. RIP dummy.
          return seastar::sleep(100ms);
      });
  }
  