diff options
Diffstat (limited to 'test/std/atomics/atomics.flag/clear.pass.cpp')
-rw-r--r-- | test/std/atomics/atomics.flag/clear.pass.cpp | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/test/std/atomics/atomics.flag/clear.pass.cpp b/test/std/atomics/atomics.flag/clear.pass.cpp new file mode 100644 index 000000000000..7c9362680bba --- /dev/null +++ b/test/std/atomics/atomics.flag/clear.pass.cpp @@ -0,0 +1,72 @@ +//===----------------------------------------------------------------------===// +// +// 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 + +// <atomic> + +// struct atomic_flag + +// void clear(memory_order = memory_order_seq_cst); +// void clear(memory_order = memory_order_seq_cst) volatile; + +#include <atomic> +#include <cassert> + +int main() +{ + { + std::atomic_flag f = ATOMIC_FLAG_INIT; + f.test_and_set(); + f.clear(); + assert(f.test_and_set() == 0); + } + { + std::atomic_flag f = ATOMIC_FLAG_INIT; + f.test_and_set(); + f.clear(std::memory_order_relaxed); + assert(f.test_and_set() == 0); + } + { + std::atomic_flag f = ATOMIC_FLAG_INIT; + f.test_and_set(); + f.clear(std::memory_order_release); + assert(f.test_and_set() == 0); + } + { + std::atomic_flag f = ATOMIC_FLAG_INIT; + f.test_and_set(); + f.clear(std::memory_order_seq_cst); + assert(f.test_and_set() == 0); + } + { + volatile std::atomic_flag f = ATOMIC_FLAG_INIT; + f.test_and_set(); + f.clear(); + assert(f.test_and_set() == 0); + } + { + volatile std::atomic_flag f = ATOMIC_FLAG_INIT; + f.test_and_set(); + f.clear(std::memory_order_relaxed); + assert(f.test_and_set() == 0); + } + { + volatile std::atomic_flag f = ATOMIC_FLAG_INIT; + f.test_and_set(); + f.clear(std::memory_order_release); + assert(f.test_and_set() == 0); + } + { + volatile std::atomic_flag f = ATOMIC_FLAG_INIT; + f.test_and_set(); + f.clear(std::memory_order_seq_cst); + assert(f.test_and_set() == 0); + } +} |