diff options
Diffstat (limited to 'test/std/thread/thread.mutex/thread.lock/thread.lock.unique/thread.lock.unique.locking/try_lock.pass.cpp')
-rw-r--r-- | test/std/thread/thread.mutex/thread.lock/thread.lock.unique/thread.lock.unique.locking/try_lock.pass.cpp | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/test/std/thread/thread.mutex/thread.lock/thread.lock.unique/thread.lock.unique.locking/try_lock.pass.cpp b/test/std/thread/thread.mutex/thread.lock/thread.lock.unique/thread.lock.unique.locking/try_lock.pass.cpp new file mode 100644 index 000000000000..bd88577f0a22 --- /dev/null +++ b/test/std/thread/thread.mutex/thread.lock/thread.lock.unique/thread.lock.unique.locking/try_lock.pass.cpp @@ -0,0 +1,64 @@ +//===----------------------------------------------------------------------===// +// +// 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 + +// <mutex> + +// template <class Mutex> class unique_lock; + +// bool try_lock(); + +#include <mutex> +#include <cassert> + +bool try_lock_called = false; + +struct mutex +{ + bool try_lock() + { + try_lock_called = !try_lock_called; + return try_lock_called; + } + void unlock() {} +}; + +mutex m; + +int main() +{ + std::unique_lock<mutex> lk(m, std::defer_lock); + assert(lk.try_lock() == true); + assert(try_lock_called == true); + assert(lk.owns_lock() == true); + try + { + lk.try_lock(); + assert(false); + } + catch (std::system_error& e) + { + assert(e.code().value() == EDEADLK); + } + lk.unlock(); + assert(lk.try_lock() == false); + assert(try_lock_called == false); + assert(lk.owns_lock() == false); + lk.release(); + try + { + lk.try_lock(); + assert(false); + } + catch (std::system_error& e) + { + assert(e.code().value() == EPERM); + } +} |