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llvm-project/libcxx/test/std/thread/thread.mutex/thread.lock.algorithm/try_lock.pass.cpp
Chandler Carruth 57b08b0944 Update more file headers across all of the LLVM projects in the monorepo 
to reflect the new license. These used slightly different spellings that
defeated my regular expressions.

We understand that people may be surprised that we're moving the header
entirely to discuss the new license. We checked this carefully with the
Foundation's lawyer and we believe this is the correct approach.

Essentially, all code in the project is now made available by the LLVM
project under our new license, so you will see that the license headers
include that license only. Some of our contributors have contributed
code under our old license, and accordingly, we have retained a copy of
our old license notice in the top-level files in each project and
repository.

llvm-svn: 351648
2019-01-19 10:56:40 +00:00

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//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// UNSUPPORTED: libcpp-has-no-threads
// <mutex>
// template <class L1, class L2, class... L3>
// int try_lock(L1&, L2&, L3&...);
#include <mutex>
#include <cassert>
#include "test_macros.h"
class L0
{
bool locked_;
public:
L0() : locked_(false) {}
bool try_lock()
{
locked_ = true;
return locked_;
}
void unlock() {locked_ = false;}
bool locked() const {return locked_;}
};
class L1
{
bool locked_;
public:
L1() : locked_(false) {}
bool try_lock()
{
locked_ = false;
return locked_;
}
void unlock() {locked_ = false;}
bool locked() const {return locked_;}
};
class L2
{
bool locked_;
public:
L2() : locked_(false) {}
bool try_lock()
{
TEST_THROW(1);
return locked_;
}
void unlock() {locked_ = false;}
bool locked() const {return locked_;}
};
int main()
{
{
L0 l0;
L0 l1;
assert(std::try_lock(l0, l1) == -1);
assert(l0.locked());
assert(l1.locked());
}
{
L0 l0;
L1 l1;
assert(std::try_lock(l0, l1) == 1);
assert(!l0.locked());
assert(!l1.locked());
}
{
L1 l0;
L0 l1;
assert(std::try_lock(l0, l1) == 0);
assert(!l0.locked());
assert(!l1.locked());
}
#ifndef TEST_HAS_NO_EXCEPTIONS
{
L0 l0;
L2 l1;
try
{
(void)std::try_lock(l0, l1);
assert(false);
}
catch (int)
{
assert(!l0.locked());
assert(!l1.locked());
}
}
{
L2 l0;
L0 l1;
try
{
(void)std::try_lock(l0, l1);
assert(false);
}
catch (int)
{
assert(!l0.locked());
assert(!l1.locked());
}
}
#endif
#if TEST_STD_VER >= 11
{
L0 l0;
L0 l1;
L0 l2;
assert(std::try_lock(l0, l1, l2) == -1);
assert(l0.locked());
assert(l1.locked());
assert(l2.locked());
}
{
L1 l0;
L1 l1;
L1 l2;
assert(std::try_lock(l0, l1, l2) == 0);
assert(!l0.locked());
assert(!l1.locked());
assert(!l2.locked());
}
#ifndef TEST_HAS_NO_EXCEPTIONS
{
L2 l0;
L2 l1;
L2 l2;
try
{
(void)std::try_lock(l0, l1, l2);
assert(false);
}
catch (int)
{
assert(!l0.locked());
assert(!l1.locked());
assert(!l2.locked());
}
}
{
L0 l0;
L1 l1;
L2 l2;
assert(std::try_lock(l0, l1, l2) == 1);
assert(!l0.locked());
assert(!l1.locked());
assert(!l2.locked());
}
#endif
{
L0 l0;
L0 l1;
L1 l2;
assert(std::try_lock(l0, l1, l2) == 2);
assert(!l0.locked());
assert(!l1.locked());
assert(!l2.locked());
}
{
L0 l0;
L1 l1;
L0 l2;
assert(std::try_lock(l0, l1, l2) == 1);
assert(!l0.locked());
assert(!l1.locked());
assert(!l2.locked());
}
{
L1 l0;
L0 l1;
L0 l2;
assert(std::try_lock(l0, l1, l2) == 0);
assert(!l0.locked());
assert(!l1.locked());
assert(!l2.locked());
}
#ifndef TEST_HAS_NO_EXCEPTIONS
{
L0 l0;
L0 l1;
L2 l2;
try
{
(void)std::try_lock(l0, l1, l2);
assert(false);
}
catch (int)
{
assert(!l0.locked());
assert(!l1.locked());
assert(!l2.locked());
}
}
{
L0 l0;
L2 l1;
L0 l2;
try
{
(void)std::try_lock(l0, l1, l2);
assert(false);
}
catch (int)
{
assert(!l0.locked());
assert(!l1.locked());
assert(!l2.locked());
}
}
{
L2 l0;
L0 l1;
L0 l2;
try
{
(void)std::try_lock(l0, l1, l2);
assert(false);
}
catch (int)
{
assert(!l0.locked());
assert(!l1.locked());
assert(!l2.locked());
}
}
#endif
{
L1 l0;
L1 l1;
L0 l2;
assert(std::try_lock(l0, l1, l2) == 0);
assert(!l0.locked());
assert(!l1.locked());
assert(!l2.locked());
}
{
L1 l0;
L0 l1;
L1 l2;
assert(std::try_lock(l0, l1, l2) == 0);
assert(!l0.locked());
assert(!l1.locked());
assert(!l2.locked());
}
{
L0 l0;
L1 l1;
L1 l2;
assert(std::try_lock(l0, l1, l2) == 1);
assert(!l0.locked());
assert(!l1.locked());
assert(!l2.locked());
}
#ifndef TEST_HAS_NO_EXCEPTIONS
{
L1 l0;
L1 l1;
L2 l2;
assert(std::try_lock(l0, l1, l2) == 0);
assert(!l0.locked());
assert(!l1.locked());
assert(!l2.locked());
}
{
L1 l0;
L2 l1;
L1 l2;
assert(std::try_lock(l0, l1, l2) == 0);
assert(!l0.locked());
assert(!l1.locked());
assert(!l2.locked());
}
{
L2 l0;
L1 l1;
L1 l2;
try
{
(void)std::try_lock(l0, l1, l2);
assert(false);
}
catch (int)
{
assert(!l0.locked());
assert(!l1.locked());
assert(!l2.locked());
}
}
{
L2 l0;
L2 l1;
L0 l2;
try
{
(void)std::try_lock(l0, l1, l2);
assert(false);
}
catch (int)
{
assert(!l0.locked());
assert(!l1.locked());
assert(!l2.locked());
}
}
{
L2 l0;
L0 l1;
L2 l2;
try
{
(void)std::try_lock(l0, l1, l2);
assert(false);
}
catch (int)
{
assert(!l0.locked());
assert(!l1.locked());
assert(!l2.locked());
}
}
{
L0 l0;
L2 l1;
L2 l2;
try
{
(void)std::try_lock(l0, l1, l2);
assert(false);
}
catch (int)
{
assert(!l0.locked());
assert(!l1.locked());
assert(!l2.locked());
}
}
{
L2 l0;
L2 l1;
L1 l2;
try
{
(void)std::try_lock(l0, l1, l2);
assert(false);
}
catch (int)
{
assert(!l0.locked());
assert(!l1.locked());
assert(!l2.locked());
}
}
{
L2 l0;
L1 l1;
L2 l2;
try
{
(void)std::try_lock(l0, l1, l2);
assert(false);
}
catch (int)
{
assert(!l0.locked());
assert(!l1.locked());
assert(!l2.locked());
}
}
{
L1 l0;
L2 l1;
L2 l2;
assert(std::try_lock(l0, l1, l2) == 0);
assert(!l0.locked());
assert(!l1.locked());
assert(!l2.locked());
}
{
L0 l0;
L2 l1;
L1 l2;
try
{
(void)std::try_lock(l0, l1, l2);
assert(false);
}
catch (int)
{
assert(!l0.locked());
assert(!l1.locked());
assert(!l2.locked());
}
}
{
L1 l0;
L0 l1;
L2 l2;
assert(std::try_lock(l0, l1, l2) == 0);
assert(!l0.locked());
assert(!l1.locked());
assert(!l2.locked());
}
{
L1 l0;
L2 l1;
L0 l2;
assert(std::try_lock(l0, l1, l2) == 0);
assert(!l0.locked());
assert(!l1.locked());
assert(!l2.locked());
}
{
L2 l0;
L0 l1;
L1 l2;
try
{
(void)std::try_lock(l0, l1, l2);
assert(false);
}
catch (int)
{
assert(!l0.locked());
assert(!l1.locked());
assert(!l2.locked());
}
}
{
L2 l0;
L1 l1;
L0 l2;
try
{
(void)std::try_lock(l0, l1, l2);
assert(false);
}
catch (int)
{
assert(!l0.locked());
assert(!l1.locked());
assert(!l2.locked());
}
}
#endif // TEST_HAS_NO_EXCEPTIONS
{
L0 l0;
L0 l1;
L0 l2;
L0 l3;
assert(std::try_lock(l0, l1, l2, l3) == -1);
assert(l0.locked());
assert(l1.locked());
assert(l2.locked());
assert(l3.locked());
}
{
L1 l0;
L0 l1;
L0 l2;
L0 l3;
assert(std::try_lock(l0, l1, l2, l3) == 0);
assert(!l0.locked());
assert(!l1.locked());
assert(!l2.locked());
assert(!l3.locked());
}
{
L0 l0;
L1 l1;
L0 l2;
L0 l3;
assert(std::try_lock(l0, l1, l2, l3) == 1);
assert(!l0.locked());
assert(!l1.locked());
assert(!l2.locked());
assert(!l3.locked());
}
{
L0 l0;
L0 l1;
L1 l2;
L0 l3;
assert(std::try_lock(l0, l1, l2, l3) == 2);
assert(!l0.locked());
assert(!l1.locked());
assert(!l2.locked());
assert(!l3.locked());
}
{
L0 l0;
L0 l1;
L0 l2;
L1 l3;
assert(std::try_lock(l0, l1, l2, l3) == 3);
assert(!l0.locked());
assert(!l1.locked());
assert(!l2.locked());
assert(!l3.locked());
}
#endif // TEST_STD_VER >= 11
}
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