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// Copyright 2017 The Native Object Protocols Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// 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.
#include <gtest/gtest.h>
#include <thread>
#include <nop/types/thread_local.h>
using nop::ThreadLocal;
using nop::ThreadLocalSlot;
using nop::ThreadLocalTypeSlot;
TEST(ThreadLocal, Slots) {
// Define a local type to prevent interaction between tests.
struct LocalTypeA {};
{
ThreadLocal<int, ThreadLocalSlot<LocalTypeA, 0>> int_value{1};
EXPECT_EQ(1, int_value.Get());
}
{
// Same type and slot as previous value. Expect the TLS value to be
// initialized already.
ThreadLocal<int, ThreadLocalSlot<LocalTypeA, 0>> int_value{0};
EXPECT_EQ(1, int_value.Get());
}
{
// Different slot than the previous value.
ThreadLocal<int, ThreadLocalSlot<LocalTypeA, 1>> int_value{2};
EXPECT_EQ(2, int_value.Get());
}
{
struct LocalTypeB {};
ThreadLocal<int, ThreadLocalSlot<LocalTypeB, 0>> int_value_a{3};
EXPECT_EQ(3, int_value_a.Get());
ThreadLocal<int, ThreadLocalSlot<LocalTypeB, 1>> int_value_b{4};
EXPECT_EQ(4, int_value_b.Get());
EXPECT_NE(&int_value_a.Get(), &int_value_b.Get());
}
}
TEST(ThreadLocal, Thread) {
struct LocalType {};
using IntType = ThreadLocal<int, ThreadLocalSlot<LocalType, 0>>;
{
IntType int_value_a{0};
int* int_pointer = nullptr;
auto Op = [&int_pointer] {
IntType int_value_b{0};
int_pointer = &int_value_b.Get();
};
std::thread t{Op};
t.join();
EXPECT_NE(int_pointer, &int_value_a.Get());
}
}
TEST(ThreadLocal, Clear) {
struct LocalType {};
using IntType = ThreadLocal<int, ThreadLocalTypeSlot<LocalType>>;
{
IntType int_value{1};
EXPECT_EQ(1, int_value.Get());
int_value.Clear();
int_value.Initialize(2);
EXPECT_EQ(2, int_value.Get());
}
{
IntType int_value{3};
EXPECT_EQ(2, int_value.Get());
}
}
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