folly/io/async/test/ScopedEventBaseThreadTest.cpp

   1 /*
   2  * Copyright 2017 Facebook, Inc.
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  *   http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16
  17 #include <folly/io/async/ScopedEventBaseThread.h>
  18
  19 #include <chrono>
  20
  21 #include <folly/Baton.h>
  22 #include <folly/Optional.h>
  23 #include <folly/io/async/EventBaseManager.h>
  24 #include <folly/portability/GTest.h>
  25
  26 using namespace std;
  27 using namespace std::chrono;
  28 using namespace folly;
  29
  30 class ScopedEventBaseThreadTest : public testing::Test {};
  31
  32 TEST_F(ScopedEventBaseThreadTest, example) {
  33   ScopedEventBaseThread sebt;
  34
  35   Baton<> done;
  36   sebt.getEventBase()->runInEventBaseThread([&] { done.post(); });
  37   ASSERT_TRUE(done.timed_wait(seconds(1)));
  38 }
  39
  40 TEST_F(ScopedEventBaseThreadTest, default_manager) {
  41   auto ebm = EventBaseManager::get();
  42   ScopedEventBaseThread sebt;
  43   auto sebt_eb = sebt.getEventBase();
  44   auto ebm_eb = static_cast<EventBase*>(nullptr);
  45   sebt_eb->runInEventBaseThreadAndWait([&] { ebm_eb = ebm->getEventBase(); });
  46   EXPECT_EQ(uintptr_t(sebt_eb), uintptr_t(ebm_eb));
  47 }
  48
  49 TEST_F(ScopedEventBaseThreadTest, custom_manager) {
  50   EventBaseManager ebm;
  51   ScopedEventBaseThread sebt(&ebm);
  52   auto sebt_eb = sebt.getEventBase();
  53   auto ebm_eb = static_cast<EventBase*>(nullptr);
  54   sebt_eb->runInEventBaseThreadAndWait([&] { ebm_eb = ebm.getEventBase(); });
  55   EXPECT_EQ(uintptr_t(sebt_eb), uintptr_t(ebm_eb));
  56 }
  57
  58 TEST_F(ScopedEventBaseThreadTest, eb_dtor_in_io_thread) {
  59   Optional<ScopedEventBaseThread> sebt;
  60   sebt.emplace();
  61   auto const io_thread_id = sebt->getThreadId();
  62   EXPECT_NE(this_thread::get_id(), io_thread_id) << "sanity";
  63
  64   auto const eb = sebt->getEventBase();
  65   thread::id eb_dtor_thread_id;
  66   eb->runOnDestruction(new EventBase::FunctionLoopCallback(
  67       [&] { eb_dtor_thread_id = this_thread::get_id(); }));
  68   sebt.clear();
  69   EXPECT_EQ(io_thread_id, eb_dtor_thread_id);
  70 }