Revert "[libc] Use best-fit binary trie to make malloc logarithmic" (#117065)
[llvm-project.git] / libcxx / test / std / thread / futures / futures.shared_future / wait.pass.cpp
blob5709e9d45df977e419ef84d21f006b9f64acb898
1 //===----------------------------------------------------------------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 //
9 // UNSUPPORTED: no-threads
10 // UNSUPPORTED: c++03
12 // <future>
14 // class shared_future<R>
16 // void wait() const;
18 #include <cassert>
19 #include <chrono>
20 #include <future>
21 #include <ratio>
23 #include "make_test_thread.h"
24 #include "test_macros.h"
26 void func1(std::promise<int> p)
28 std::this_thread::sleep_for(std::chrono::milliseconds(500));
29 p.set_value(3);
32 int j = 0;
34 void func3(std::promise<int&> p)
36 std::this_thread::sleep_for(std::chrono::milliseconds(500));
37 j = 5;
38 p.set_value(j);
41 void func5(std::promise<void> p)
43 std::this_thread::sleep_for(std::chrono::milliseconds(500));
44 p.set_value();
47 int main(int, char**)
49 typedef std::chrono::high_resolution_clock Clock;
50 typedef std::chrono::duration<double, std::milli> ms;
52 typedef int T;
53 std::promise<T> p;
54 std::shared_future<T> f = p.get_future();
55 support::make_test_thread(func1, std::move(p)).detach();
56 assert(f.valid());
57 f.wait();
58 assert(f.valid());
59 Clock::time_point t0 = Clock::now();
60 f.wait();
61 Clock::time_point t1 = Clock::now();
62 assert(f.valid());
63 assert(t1-t0 < ms(5));
66 typedef int& T;
67 std::promise<T> p;
68 std::shared_future<T> f = p.get_future();
69 support::make_test_thread(func3, std::move(p)).detach();
70 assert(f.valid());
71 f.wait();
72 assert(f.valid());
73 Clock::time_point t0 = Clock::now();
74 f.wait();
75 Clock::time_point t1 = Clock::now();
76 assert(f.valid());
77 assert(t1-t0 < ms(5));
80 typedef void T;
81 std::promise<T> p;
82 std::shared_future<T> f = p.get_future();
83 support::make_test_thread(func5, std::move(p)).detach();
84 assert(f.valid());
85 f.wait();
86 assert(f.valid());
87 Clock::time_point t0 = Clock::now();
88 f.wait();
89 Clock::time_point t1 = Clock::now();
90 assert(f.valid());
91 assert(t1-t0 < ms(5));
94 return 0;