folly/test/ThreadNameTest.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 <thread>
  18
  19 #include <folly/Baton.h>
  20 #include <folly/ScopeGuard.h>
  21 #include <folly/ThreadName.h>
  22 #include <folly/portability/GTest.h>
  23
  24 using namespace std;
  25 using namespace folly;
  26
  27 namespace {
  28
  29 const bool expectedSetOtherThreadNameResult = folly::canSetOtherThreadName();
  30 const bool expectedSetSelfThreadNameResult = folly::canSetCurrentThreadName();
  31 constexpr StringPiece kThreadName{"rockin-thread"};
  32
  33 } // namespace
  34
  35 TEST(ThreadName, getCurrentThreadName) {
  36   thread th([] {
  37     EXPECT_EQ(expectedSetSelfThreadNameResult, setThreadName(kThreadName));
  38     if (expectedSetSelfThreadNameResult) {
  39       EXPECT_EQ(kThreadName.toString(), *getCurrentThreadName());
  40     }
  41   });
  42   SCOPE_EXIT { th.join(); };
  43 }
  44
  45 TEST(ThreadName, setThreadName_other_pthread) {
  46   Baton<> handle_set;
  47   Baton<> let_thread_end;
  48   pthread_t handle;
  49   thread th([&] {
  50       handle = pthread_self();
  51       handle_set.post();
  52       let_thread_end.wait();
  53   });
  54   SCOPE_EXIT { th.join(); };
  55   handle_set.wait();
  56   SCOPE_EXIT { let_thread_end.post(); };
  57   EXPECT_EQ(
  58       expectedSetOtherThreadNameResult, setThreadName(handle, kThreadName));
  59 }
  60
  61 TEST(ThreadName, setThreadName_other_id) {
  62   Baton<> let_thread_end;
  63   thread th([&] {
  64       let_thread_end.wait();
  65   });
  66   SCOPE_EXIT { th.join(); };
  67   SCOPE_EXIT { let_thread_end.post(); };
  68   EXPECT_EQ(
  69       expectedSetOtherThreadNameResult,
  70       setThreadName(th.get_id(), kThreadName));
  71   if (expectedSetOtherThreadNameResult) {
  72     EXPECT_EQ(*getThreadName(th.get_id()), kThreadName);
  73   }
  74 }