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llvm-project/libcxx/test/std/thread/thread.mutex/thread.lock.algorithm/lock.pass.cpp

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//===----------------------------------------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// UNSUPPORTED: libcpp-has-no-threads
// This test hangs forever when built against libstdc++ and MSVC. In order to allow
// validation of the test suite against other STLs we have to mark it
// unsupported.
// UNSUPPORTED: libstdc++, msvc
// <mutex>
// template <class L1, class L2, class... L3>
// void lock(L1&, L2&, L3&...);
#include <mutex>
#include <cassert>
#include "test_macros.h"
class L0
{
bool locked_;
public:
L0() : locked_(false) {}
void lock()
{
locked_ = true;
}
bool try_lock()
{
locked_ = true;
return locked_;
}
void unlock() {locked_ = false;}
bool locked() const {return locked_;}
};
class L1
{
bool locked_;
public:
L1() : locked_(false) {}
void lock()
{
locked_ = true;
}
bool try_lock()
{
locked_ = false;
return locked_;
}
void unlock() {locked_ = false;}
bool locked() const {return locked_;}
};
class L2
{
bool locked_;
public:
L2() : locked_(false) {}
void lock()
{
TEST_THROW(1);
}
bool try_lock()
{
TEST_THROW(1);
return locked_;
}
void unlock() {locked_ = false;}
bool locked() const {return locked_;}
};
int main()
{
{
L0 l0;
L0 l1;
std::lock(l0, l1);
assert(l0.locked());
assert(l1.locked());
}
{
L0 l0;
L1 l1;
std::lock(l0, l1);
assert(l0.locked());
assert(l1.locked());
}
{
L1 l0;
L0 l1;
std::lock(l0, l1);
assert(l0.locked());
assert(l1.locked());
}
#ifndef TEST_HAS_NO_EXCEPTIONS
{
L0 l0;
L2 l1;
try
{
std::lock(l0, l1);
assert(false);
}
catch (int)
{
assert(!l0.locked());
assert(!l1.locked());
}
}
{
L2 l0;
L0 l1;
try
{
std::lock(l0, l1);
assert(false);
}
catch (int)
{
assert(!l0.locked());
assert(!l1.locked());
}
}
{
L1 l0;
L2 l1;
try
{
std::lock(l0, l1);
assert(false);
}
catch (int)
{
assert(!l0.locked());
assert(!l1.locked());
}
}
{
L2 l0;
L1 l1;
try
{
std::lock(l0, l1);
assert(false);
}
catch (int)
{
assert(!l0.locked());
assert(!l1.locked());
}
}
{
L2 l0;
L2 l1;
try
{
std::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;
std::lock(l0, l1, l2);
assert(l0.locked());
assert(l1.locked());
assert(l2.locked());
}
#ifndef TEST_HAS_NO_EXCEPTIONS
{
L2 l0;
L2 l1;
L2 l2;
try
{
std::lock(l0, l1, l2);
assert(false);
}
catch (int)
{
assert(!l0.locked());
assert(!l1.locked());
assert(!l2.locked());
}
}
#endif
{
L0 l0;
L0 l1;
L1 l2;
std::lock(l0, l1, l2);
assert(l0.locked());
assert(l1.locked());
assert(l2.locked());
}
{
L0 l0;
L1 l1;
L0 l2;
std::lock(l0, l1, l2);
assert(l0.locked());
assert(l1.locked());
assert(l2.locked());
}
{
L1 l0;
L0 l1;
L0 l2;
std::lock(l0, l1, l2);
assert(l0.locked());
assert(l1.locked());
assert(l2.locked());
}
#ifndef TEST_HAS_NO_EXCEPTIONS
{
L0 l0;
L0 l1;
L2 l2;
try
{
std::lock(l0, l1, l2);
assert(false);
}
catch (int)
{
assert(!l0.locked());
assert(!l1.locked());
assert(!l2.locked());
}
}
{
L0 l0;
L2 l1;
L0 l2;
try
{
std::lock(l0, l1, l2);
assert(false);
}
catch (int)
{
assert(!l0.locked());
assert(!l1.locked());
assert(!l2.locked());
}
}
{
L2 l0;
L0 l1;
L0 l2;
try
{
std::lock(l0, l1, l2);
assert(false);
}
catch (int)
{
assert(!l0.locked());
assert(!l1.locked());
assert(!l2.locked());
}
}
{
L2 l0;
L2 l1;
L0 l2;
try
{
std::lock(l0, l1, l2);
assert(false);
}
catch (int)
{
assert(!l0.locked());
assert(!l1.locked());
assert(!l2.locked());
}
}
{
L2 l0;
L0 l1;
L2 l2;
try
{
std::lock(l0, l1, l2);
assert(false);
}
catch (int)
{
assert(!l0.locked());
assert(!l1.locked());
assert(!l2.locked());
}
}
{
L0 l0;
L2 l1;
L2 l2;
try
{
std::lock(l0, l1, l2);
assert(false);
}
catch (int)
{
assert(!l0.locked());
assert(!l1.locked());
assert(!l2.locked());
}
}
{
L2 l0;
L2 l1;
L1 l2;
try
{
std::lock(l0, l1, l2);
assert(false);
}
catch (int)
{
assert(!l0.locked());
assert(!l1.locked());
assert(!l2.locked());
}
}
{
L2 l0;
L1 l1;
L2 l2;
try
{
std::lock(l0, l1, l2);
assert(false);
}
catch (int)
{
assert(!l0.locked());
assert(!l1.locked());
assert(!l2.locked());
}
}
{
L1 l0;
L2 l1;
L2 l2;
try
{
std::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;
std::lock(l0, l1, l2, l3);
assert(l0.locked());
assert(l1.locked());
assert(l2.locked());
assert(l3.locked());
}
{
L0 l0;
L0 l1;
L0 l2;
L1 l3;
std::lock(l0, l1, l2, l3);
assert(l0.locked());
assert(l1.locked());
assert(l2.locked());
assert(l3.locked());
}
{
L0 l0;
L0 l1;
L1 l2;
L0 l3;
std::lock(l0, l1, l2, l3);
assert(l0.locked());
assert(l1.locked());
assert(l2.locked());
assert(l3.locked());
}
{
L0 l0;
L1 l1;
L0 l2;
L0 l3;
std::lock(l0, l1, l2, l3);
assert(l0.locked());
assert(l1.locked());
assert(l2.locked());
assert(l3.locked());
}
{
L1 l0;
L0 l1;
L0 l2;
L0 l3;
std::lock(l0, l1, l2, l3);
assert(l0.locked());
assert(l1.locked());
assert(l2.locked());
assert(l3.locked());
}
#ifndef TEST_HAS_NO_EXCEPTIONS
{
L0 l0;
L0 l1;
L0 l2;
L2 l3;
try
{
std::lock(l0, l1, l2, l3);
assert(false);
}
catch (int)
{
assert(!l0.locked());
assert(!l1.locked());
assert(!l2.locked());
assert(!l3.locked());
}
}
{
L0 l0;
L0 l1;
L2 l2;
L0 l3;
try
{
std::lock(l0, l1, l2, l3);
assert(false);
}
catch (int)
{
assert(!l0.locked());
assert(!l1.locked());
assert(!l2.locked());
assert(!l3.locked());
}
}
{
L0 l0;
L2 l1;
L0 l2;
L0 l3;
try
{
std::lock(l0, l1, l2, l3);
assert(false);
}
catch (int)
{
assert(!l0.locked());
assert(!l1.locked());
assert(!l2.locked());
assert(!l3.locked());
}
}
{
L2 l0;
L0 l1;
L0 l2;
L0 l3;
try
{
std::lock(l0, l1, l2, l3);
assert(false);
}
catch (int)
{
assert(!l0.locked());
assert(!l1.locked());
assert(!l2.locked());
assert(!l3.locked());
}
}
#endif // TEST_HAS_NO_EXCEPTIONS
#endif // TEST_STD_VER >= 11
}
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