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 #include <string>
  21
  22 #include <folly/Baton.h>
  23 #include <folly/Optional.h>
  24 #include <folly/ThreadName.h>
  25 #include <folly/io/async/EventBaseManager.h>
  26 #include <folly/portability/GTest.h>
  27
  28 using namespace std;
  29 using namespace std::chrono;
  30 using namespace folly;
  31
  32 class ScopedEventBaseThreadTest : public testing::Test {};
  33
  34 TEST_F(ScopedEventBaseThreadTest, example) {
  35   ScopedEventBaseThread sebt;
  36
  37   Baton<> done;
  38   sebt.getEventBase()->runInEventBaseThread([&] { done.post(); });
  39   ASSERT_TRUE(done.timed_wait(seconds(1)));
  40 }
  41
  42 TEST_F(ScopedEventBaseThreadTest, named_example) {
  43   static constexpr StringPiece kThreadName{"named_example"};
  44
  45   Optional<std::string> createdThreadName;
  46   Baton<> done;
  47
  48   ScopedEventBaseThread sebt{kThreadName};
  49   sebt.getEventBase()->runInEventBaseThread([&] {
  50     createdThreadName = folly::getCurrentThreadName();
  51     done.post();
  52   });
  53
  54   ASSERT_TRUE(done.timed_wait(seconds(1)));
  55   if (createdThreadName) {
  56     ASSERT_EQ(kThreadName.toString(), createdThreadName.value());
  57   }
  58 }
  59
  60 TEST_F(ScopedEventBaseThreadTest, default_manager) {
  61   auto ebm = EventBaseManager::get();
  62   ScopedEventBaseThread sebt;
  63   auto sebt_eb = sebt.getEventBase();
  64   auto ebm_eb = static_cast<EventBase*>(nullptr);
  65   sebt_eb->runInEventBaseThreadAndWait([&] { ebm_eb = ebm->getEventBase(); });
  66   EXPECT_EQ(uintptr_t(sebt_eb), uintptr_t(ebm_eb));
  67 }
  68
  69 TEST_F(ScopedEventBaseThreadTest, custom_manager) {
  70   EventBaseManager ebm;
  71   ScopedEventBaseThread sebt(&ebm);
  72   auto sebt_eb = sebt.getEventBase();
  73   auto ebm_eb = static_cast<EventBase*>(nullptr);
  74   sebt_eb->runInEventBaseThreadAndWait([&] { ebm_eb = ebm.getEventBase(); });
  75   EXPECT_EQ(uintptr_t(sebt_eb), uintptr_t(ebm_eb));
  76 }
  77
  78 TEST_F(ScopedEventBaseThreadTest, eb_dtor_in_io_thread) {
  79   Optional<ScopedEventBaseThread> sebt;
  80   sebt.emplace();
  81   auto const io_thread_id = sebt->getThreadId();
  82   EXPECT_NE(this_thread::get_id(), io_thread_id) << "sanity";
  83
  84   auto const eb = sebt->getEventBase();
  85   thread::id eb_dtor_thread_id;
  86   eb->runOnDestruction(new EventBase::FunctionLoopCallback(
  87       [&] { eb_dtor_thread_id = this_thread::get_id(); }));
  88   sebt.clear();
  89   EXPECT_EQ(io_thread_id, eb_dtor_thread_id);
  90 }