[libcxx-commits] [libcxx] [libc++] Make `std::lock_guard` available with `_LIBCPP_HAS_NO_THREADS` (PR #98717)
Petr Hosek via libcxx-commits
libcxx-commits at lists.llvm.org
Mon Jul 15 16:10:16 PDT 2024
https://github.com/petrhosek updated https://github.com/llvm/llvm-project/pull/98717
>From 1aec8cd07c1b0f6f45cf54e640d8265299ee86c4 Mon Sep 17 00:00:00 2001
From: Petr Hosek <phosek at google.com>
Date: Fri, 12 Jul 2024 22:50:34 -0700
Subject: [PATCH 1/9] [libcxx] Make locks available with _LIBCPP_HAS_NO_THREADS
This change makes std::lock_guard, std::unique_lock, std::scoped_lock,
and std::shared_lock available when _LIBCPP_HAS_NO_THREADS is set.
These classes are generic and don't require threading support, and are
regularly used even in environments where threading isn't available like
embedded.
fixes #89891
---
libcxx/include/__mutex/lock_guard.h | 4 ----
libcxx/include/__mutex/unique_lock.h | 4 ----
libcxx/include/mutex | 6 +++---
libcxx/include/shared_mutex | 15 +++++++--------
4 files changed, 10 insertions(+), 19 deletions(-)
diff --git a/libcxx/include/__mutex/lock_guard.h b/libcxx/include/__mutex/lock_guard.h
index 8340b9bbd4453..ef56896be9f68 100644
--- a/libcxx/include/__mutex/lock_guard.h
+++ b/libcxx/include/__mutex/lock_guard.h
@@ -16,8 +16,6 @@
# pragma GCC system_header
#endif
-#ifndef _LIBCPP_HAS_NO_THREADS
-
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _Mutex>
@@ -47,6 +45,4 @@ _LIBCPP_CTAD_SUPPORTED_FOR_TYPE(lock_guard);
_LIBCPP_END_NAMESPACE_STD
-#endif // _LIBCPP_HAS_NO_THREADS
-
#endif // _LIBCPP___MUTEX_LOCK_GUARD_H
diff --git a/libcxx/include/__mutex/unique_lock.h b/libcxx/include/__mutex/unique_lock.h
index 4a616ba51ee1c..5df791de4c742 100644
--- a/libcxx/include/__mutex/unique_lock.h
+++ b/libcxx/include/__mutex/unique_lock.h
@@ -22,8 +22,6 @@
# pragma GCC system_header
#endif
-#ifndef _LIBCPP_HAS_NO_THREADS
-
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _Mutex>
@@ -172,6 +170,4 @@ inline _LIBCPP_HIDE_FROM_ABI void swap(unique_lock<_Mutex>& __x, unique_lock<_Mu
_LIBCPP_END_NAMESPACE_STD
-#endif // _LIBCPP_HAS_NO_THREADS
-
#endif // _LIBCPP___MUTEX_UNIQUE_LOCK_H
diff --git a/libcxx/include/mutex b/libcxx/include/mutex
index 02c52dd72f02b..d4d7539240094 100644
--- a/libcxx/include/mutex
+++ b/libcxx/include/mutex
@@ -419,8 +419,9 @@ inline _LIBCPP_HIDE_FROM_ABI void lock(_L0& __l0, _L1& __l1, _L2& __l2, _L3&...
}
# endif // _LIBCPP_CXX03_LANG
+#endif // !_LIBCPP_HAS_NO_THREADS
-# if _LIBCPP_STD_VER >= 17
+#if _LIBCPP_STD_VER >= 17
template <class... _Mutexes>
class _LIBCPP_TEMPLATE_VIS scoped_lock;
@@ -491,8 +492,7 @@ private:
};
_LIBCPP_CTAD_SUPPORTED_FOR_TYPE(scoped_lock);
-# endif // _LIBCPP_STD_VER >= 17
-#endif // !_LIBCPP_HAS_NO_THREADS
+#endif // _LIBCPP_STD_VER >= 17
_LIBCPP_END_NAMESPACE_STD
diff --git a/libcxx/include/shared_mutex b/libcxx/include/shared_mutex
index 397ac290d9b2e..5918af4a214c1 100644
--- a/libcxx/include/shared_mutex
+++ b/libcxx/include/shared_mutex
@@ -122,16 +122,11 @@ template <class Mutex>
*/
-#include <__config>
-
-#ifdef _LIBCPP_HAS_NO_THREADS
-# error "<shared_mutex> is not supported since libc++ has been configured without support for threads."
-#endif
-
#include <__chrono/duration.h>
#include <__chrono/steady_clock.h>
#include <__chrono/time_point.h>
#include <__condition_variable/condition_variable.h>
+#include <__config>
#include <__memory/addressof.h>
#include <__mutex/mutex.h>
#include <__mutex/tag_types.h>
@@ -152,6 +147,8 @@ _LIBCPP_PUSH_MACROS
_LIBCPP_BEGIN_NAMESPACE_STD
+# ifndef _LIBCPP_HAS_NO_THREADS
+
struct _LIBCPP_EXPORTED_FROM_ABI __shared_mutex_base {
mutex __mut_;
condition_variable __gate1_;
@@ -181,7 +178,7 @@ struct _LIBCPP_EXPORTED_FROM_ABI __shared_mutex_base {
// native_handle_type native_handle(); // See 30.2.3
};
-# if _LIBCPP_STD_VER >= 17
+# if _LIBCPP_STD_VER >= 17
class _LIBCPP_EXPORTED_FROM_ABI _LIBCPP_THREAD_SAFETY_ANNOTATION(__capability__("shared_mutex")) shared_mutex {
__shared_mutex_base __base_;
@@ -218,7 +215,7 @@ public:
// typedef __shared_mutex_base::native_handle_type native_handle_type;
// _LIBCPP_HIDE_FROM_ABI native_handle_type native_handle() { return __base::unlock_shared(); }
};
-# endif
+# endif
class _LIBCPP_EXPORTED_FROM_ABI
_LIBCPP_THREAD_SAFETY_ANNOTATION(__capability__("shared_timed_mutex")) shared_timed_mutex {
@@ -308,6 +305,8 @@ bool shared_timed_mutex::try_lock_shared_until(const chrono::time_point<_Clock,
return true;
}
+# endif // !_LIBCPP_HAS_NO_THREADS
+
template <class _Mutex>
class shared_lock {
public:
>From 2b4d4305582570620a27a6c7c30a4053da63143c Mon Sep 17 00:00:00 2001
From: Petr Hosek <phosek at google.com>
Date: Sat, 13 Jul 2024 16:28:26 -0700
Subject: [PATCH 2/9] Update test annotations
---
.../thread.lock/thread.lock.guard/assign.compile.fail.cpp | 2 ++
.../thread.lock/thread.lock.guard/copy.compile.fail.cpp | 2 ++
.../thread.lock/thread.lock.scoped/adopt_lock.pass.cpp | 3 +--
.../thread.mutex/thread.lock/thread.lock.scoped/mutex.pass.cpp | 3 +--
.../thread.lock.shared.locking/try_lock_for.pass.cpp | 3 +--
.../thread.lock.shared.locking/try_lock_until.pass.cpp | 3 +--
.../thread.lock.shared.locking/unlock.pass.cpp | 3 +--
.../thread.lock.shared.mod/member_swap.pass.cpp | 3 +--
.../thread.lock.shared.mod/nonmember_swap.pass.cpp | 3 +--
.../thread.lock.shared/thread.lock.shared.mod/release.pass.cpp | 3 +--
.../thread.lock.shared/thread.lock.shared.obs/op_bool.pass.cpp | 3 +--
.../thread.lock.unique.locking/try_lock.pass.cpp | 3 +--
.../thread.lock.unique.locking/try_lock_for.pass.cpp | 3 +--
.../thread.lock.unique.locking/try_lock_until.pass.cpp | 3 +--
.../thread.lock.unique.mod/member_swap.pass.cpp | 2 --
.../thread.lock.unique.mod/nonmember_swap.pass.cpp | 2 --
.../thread.lock.unique/thread.lock.unique.mod/release.pass.cpp | 2 --
17 files changed, 16 insertions(+), 30 deletions(-)
diff --git a/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.guard/assign.compile.fail.cpp b/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.guard/assign.compile.fail.cpp
index 2d0f438ed0391..330cae19d1fea 100644
--- a/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.guard/assign.compile.fail.cpp
+++ b/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.guard/assign.compile.fail.cpp
@@ -6,6 +6,8 @@
//
//===----------------------------------------------------------------------===//
+// UNSUPPORTED: no-threads
+
// <mutex>
// template <class Mutex> class lock_guard;
diff --git a/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.guard/copy.compile.fail.cpp b/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.guard/copy.compile.fail.cpp
index e99517e47e8c6..7e9dd43a6bb32 100644
--- a/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.guard/copy.compile.fail.cpp
+++ b/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.guard/copy.compile.fail.cpp
@@ -6,6 +6,8 @@
//
//===----------------------------------------------------------------------===//
+// UNSUPPORTED: no-threads
+
// <mutex>
// template <class Mutex> class lock_guard;
diff --git a/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.scoped/adopt_lock.pass.cpp b/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.scoped/adopt_lock.pass.cpp
index 83b29ff669dca..a48caf7fdbb51 100644
--- a/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.scoped/adopt_lock.pass.cpp
+++ b/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.scoped/adopt_lock.pass.cpp
@@ -5,8 +5,7 @@
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
-//
-// UNSUPPORTED: no-threads
+
// UNSUPPORTED: c++03, c++11, c++14
// <mutex>
diff --git a/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.scoped/mutex.pass.cpp b/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.scoped/mutex.pass.cpp
index f953fa4f8d6df..0812c33c22226 100644
--- a/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.scoped/mutex.pass.cpp
+++ b/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.scoped/mutex.pass.cpp
@@ -5,8 +5,7 @@
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
-//
-// UNSUPPORTED: no-threads
+
// UNSUPPORTED: c++03, c++11, c++14
// <mutex>
diff --git a/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.locking/try_lock_for.pass.cpp b/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.locking/try_lock_for.pass.cpp
index d28ae395ccb0d..3b3c34f0b9351 100644
--- a/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.locking/try_lock_for.pass.cpp
+++ b/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.locking/try_lock_for.pass.cpp
@@ -5,8 +5,7 @@
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
-//
-// UNSUPPORTED: no-threads
+
// UNSUPPORTED: c++03, c++11
// <shared_mutex>
diff --git a/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.locking/try_lock_until.pass.cpp b/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.locking/try_lock_until.pass.cpp
index 880bf1cbd4999..ab5f3c7b6a935 100644
--- a/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.locking/try_lock_until.pass.cpp
+++ b/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.locking/try_lock_until.pass.cpp
@@ -5,8 +5,7 @@
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
-//
-// UNSUPPORTED: no-threads
+
// UNSUPPORTED: c++03, c++11
// <shared_mutex>
diff --git a/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.locking/unlock.pass.cpp b/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.locking/unlock.pass.cpp
index 4f31a75f68dec..0fcab6d346699 100644
--- a/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.locking/unlock.pass.cpp
+++ b/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.locking/unlock.pass.cpp
@@ -5,8 +5,7 @@
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
-//
-// UNSUPPORTED: no-threads
+
// UNSUPPORTED: c++03, c++11
// <shared_mutex>
diff --git a/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.mod/member_swap.pass.cpp b/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.mod/member_swap.pass.cpp
index aeca2022ba9c9..af904434efd82 100644
--- a/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.mod/member_swap.pass.cpp
+++ b/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.mod/member_swap.pass.cpp
@@ -5,8 +5,7 @@
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
-//
-// UNSUPPORTED: no-threads
+
// UNSUPPORTED: c++03, c++11
// <shared_mutex>
diff --git a/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.mod/nonmember_swap.pass.cpp b/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.mod/nonmember_swap.pass.cpp
index 25e5cf624caa8..a2827b0292e76 100644
--- a/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.mod/nonmember_swap.pass.cpp
+++ b/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.mod/nonmember_swap.pass.cpp
@@ -5,8 +5,7 @@
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
-//
-// UNSUPPORTED: no-threads
+
// UNSUPPORTED: c++03, c++11
// <shared_mutex>
diff --git a/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.mod/release.pass.cpp b/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.mod/release.pass.cpp
index 9dfdd0b0ded2f..412b9ba023827 100644
--- a/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.mod/release.pass.cpp
+++ b/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.mod/release.pass.cpp
@@ -5,8 +5,7 @@
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
-//
-// UNSUPPORTED: no-threads
+
// UNSUPPORTED: c++03, c++11
// <shared_mutex>
diff --git a/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.obs/op_bool.pass.cpp b/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.obs/op_bool.pass.cpp
index 1186671ad04d2..e26e8122ab191 100644
--- a/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.obs/op_bool.pass.cpp
+++ b/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.obs/op_bool.pass.cpp
@@ -5,8 +5,7 @@
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
-//
-// UNSUPPORTED: no-threads
+
// UNSUPPORTED: c++03, c++11
// <shared_mutex>
diff --git a/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.unique/thread.lock.unique.locking/try_lock.pass.cpp b/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.unique/thread.lock.unique.locking/try_lock.pass.cpp
index 4cf5ec2ab5ccf..9c6a971bc9f33 100644
--- a/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.unique/thread.lock.unique.locking/try_lock.pass.cpp
+++ b/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.unique/thread.lock.unique.locking/try_lock.pass.cpp
@@ -5,8 +5,7 @@
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
-//
-// UNSUPPORTED: no-threads
+
// UNSUPPORTED: c++03
// ALLOW_RETRIES: 2
diff --git a/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.unique/thread.lock.unique.locking/try_lock_for.pass.cpp b/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.unique/thread.lock.unique.locking/try_lock_for.pass.cpp
index 8e7004e5eec85..b211ce3afce07 100644
--- a/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.unique/thread.lock.unique.locking/try_lock_for.pass.cpp
+++ b/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.unique/thread.lock.unique.locking/try_lock_for.pass.cpp
@@ -5,8 +5,7 @@
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
-//
-// UNSUPPORTED: no-threads
+
// UNSUPPORTED: c++03
// <mutex>
diff --git a/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.unique/thread.lock.unique.locking/try_lock_until.pass.cpp b/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.unique/thread.lock.unique.locking/try_lock_until.pass.cpp
index 077bc517399ab..67c0cb94e9f90 100644
--- a/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.unique/thread.lock.unique.locking/try_lock_until.pass.cpp
+++ b/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.unique/thread.lock.unique.locking/try_lock_until.pass.cpp
@@ -5,8 +5,7 @@
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
-//
-// UNSUPPORTED: no-threads
+
// UNSUPPORTED: c++03
// <mutex>
diff --git a/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.unique/thread.lock.unique.mod/member_swap.pass.cpp b/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.unique/thread.lock.unique.mod/member_swap.pass.cpp
index fc12d3baea202..79731dec09bd5 100644
--- a/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.unique/thread.lock.unique.mod/member_swap.pass.cpp
+++ b/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.unique/thread.lock.unique.mod/member_swap.pass.cpp
@@ -5,8 +5,6 @@
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
-//
-// UNSUPPORTED: no-threads
// <mutex>
diff --git a/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.unique/thread.lock.unique.mod/nonmember_swap.pass.cpp b/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.unique/thread.lock.unique.mod/nonmember_swap.pass.cpp
index 03d268c4b9306..f4c1661556f94 100644
--- a/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.unique/thread.lock.unique.mod/nonmember_swap.pass.cpp
+++ b/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.unique/thread.lock.unique.mod/nonmember_swap.pass.cpp
@@ -5,8 +5,6 @@
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
-//
-// UNSUPPORTED: no-threads
// <mutex>
diff --git a/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.unique/thread.lock.unique.mod/release.pass.cpp b/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.unique/thread.lock.unique.mod/release.pass.cpp
index 4f2d59c3d333d..fd2ed6dd5afb8 100644
--- a/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.unique/thread.lock.unique.mod/release.pass.cpp
+++ b/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.unique/thread.lock.unique.mod/release.pass.cpp
@@ -5,8 +5,6 @@
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
-//
-// UNSUPPORTED: no-threads
// <mutex>
>From e06a8e6ebe3cc99a576b9bd27e990807fb15bb74 Mon Sep 17 00:00:00 2001
From: Petr Hosek <phosek at google.com>
Date: Sat, 13 Jul 2024 16:59:05 -0700
Subject: [PATCH 3/9] More tests
---
.../thread.lock.guard/mutex.pass.cpp | 28 ++++++++++---------
.../thread.lock.shared.cons/mutex.pass.cpp | 3 +-
.../thread.lock.shared.locking/lock.pass.cpp | 3 +-
.../try_lock.pass.cpp | 3 +-
4 files changed, 21 insertions(+), 16 deletions(-)
diff --git a/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.guard/mutex.pass.cpp b/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.guard/mutex.pass.cpp
index 6025b0c3b465b..a95c2ef0029de 100644
--- a/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.guard/mutex.pass.cpp
+++ b/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.guard/mutex.pass.cpp
@@ -18,27 +18,29 @@
// -> lock_guard<_Mutex>; // C++17
#include <mutex>
-#include <cstdlib>
#include <cassert>
-
-#include "make_test_thread.h"
#include "test_macros.h"
-std::mutex m;
+struct TestMutex {
+ bool locked = false;
+ TestMutex() = default;
+ ~TestMutex() { assert(!locked); }
-void do_try_lock() {
- assert(m.try_lock() == false);
-}
+ void lock() { assert(!locked); locked = true; }
+ bool try_lock() { if (locked) return false; locked = true; return true; }
+ void unlock() { assert(locked); locked = false; }
+
+ TestMutex(TestMutex const&) = delete;
+ TestMutex& operator=(TestMutex const&) = delete;
+};
int main(int, char**) {
+ TestMutex m;
{
- std::lock_guard<std::mutex> lg(m);
- std::thread t = support::make_test_thread(do_try_lock);
- t.join();
+ std::lock_guard<TestMutex> lg(m);
+ assert(m.locked);
}
-
- m.lock();
- m.unlock();
+ assert(!m.locked);
#if TEST_STD_VER >= 17
std::lock_guard lg(m);
diff --git a/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.cons/mutex.pass.cpp b/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.cons/mutex.pass.cpp
index ece330134f2cd..863948763e2ef 100644
--- a/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.cons/mutex.pass.cpp
+++ b/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.cons/mutex.pass.cpp
@@ -6,7 +6,6 @@
//
//===----------------------------------------------------------------------===//
-// UNSUPPORTED: no-threads
// UNSUPPORTED: c++03, c++11
// <shared_mutex>
@@ -79,10 +78,12 @@ void test() {
}
int main(int, char**) {
+#ifndef TEST_HAS_NO_THREADS
#if TEST_STD_VER >= 17
test<std::shared_mutex>();
#endif
test<std::shared_timed_mutex>();
+#endif
test<TrackedMutex>();
// Use shared_lock with a dummy mutex class that tracks whether each
diff --git a/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.locking/lock.pass.cpp b/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.locking/lock.pass.cpp
index d36ca1d38f8f1..9097ac74d1272 100644
--- a/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.locking/lock.pass.cpp
+++ b/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.locking/lock.pass.cpp
@@ -6,7 +6,6 @@
//
//===----------------------------------------------------------------------===//
-// UNSUPPORTED: no-threads
// UNSUPPORTED: c++03, c++11
// <shared_mutex>
@@ -99,10 +98,12 @@ void test() {
}
int main(int, char**) {
+#ifndef TEST_HAS_NO_THREADS
#if TEST_STD_VER >= 17
test<std::shared_mutex>();
#endif
test<std::shared_timed_mutex>();
+#endif
test<TrackedMutex>();
// Use shared_lock with a dummy mutex class that tracks whether each
diff --git a/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.locking/try_lock.pass.cpp b/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.locking/try_lock.pass.cpp
index b6146680b6e35..ccab79d4db016 100644
--- a/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.locking/try_lock.pass.cpp
+++ b/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.locking/try_lock.pass.cpp
@@ -6,7 +6,6 @@
//
//===----------------------------------------------------------------------===//
-// UNSUPPORTED: no-threads
// UNSUPPORTED: c++03, c++11
// <shared_mutex>
@@ -104,10 +103,12 @@ void test() {
}
int main(int, char**) {
+#ifndef TEST_HAS_NO_THREADS
#if TEST_STD_VER >= 17
test<std::shared_mutex>();
#endif
test<std::shared_timed_mutex>();
+#endif
test<TrackedMutex>();
// Use shared_lock with a dummy mutex class that tracks whether each
>From 896cdc342ea226d06891cdf073294c424cee0fde Mon Sep 17 00:00:00 2001
From: Petr Hosek <phosek at google.com>
Date: Sat, 13 Jul 2024 17:38:15 -0700
Subject: [PATCH 4/9] Fix formatting
---
libcxx/include/shared_mutex | 2 +-
.../thread.lock.guard/mutex.pass.cpp | 29 +++++++++++++------
.../thread.lock.shared.cons/mutex.pass.cpp | 4 +--
.../thread.lock.shared.locking/lock.pass.cpp | 4 +--
.../try_lock.pass.cpp | 4 +--
5 files changed, 27 insertions(+), 16 deletions(-)
diff --git a/libcxx/include/shared_mutex b/libcxx/include/shared_mutex
index 5918af4a214c1..63d24e0182fe5 100644
--- a/libcxx/include/shared_mutex
+++ b/libcxx/include/shared_mutex
@@ -305,7 +305,7 @@ bool shared_timed_mutex::try_lock_shared_until(const chrono::time_point<_Clock,
return true;
}
-# endif // !_LIBCPP_HAS_NO_THREADS
+# endif // !_LIBCPP_HAS_NO_THREADS
template <class _Mutex>
class shared_lock {
diff --git a/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.guard/mutex.pass.cpp b/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.guard/mutex.pass.cpp
index a95c2ef0029de..ca902f16f81d7 100644
--- a/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.guard/mutex.pass.cpp
+++ b/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.guard/mutex.pass.cpp
@@ -22,16 +22,27 @@
#include "test_macros.h"
struct TestMutex {
- bool locked = false;
- TestMutex() = default;
- ~TestMutex() { assert(!locked); }
+ bool locked = false;
+ TestMutex() = default;
+ ~TestMutex() { assert(!locked); }
- void lock() { assert(!locked); locked = true; }
- bool try_lock() { if (locked) return false; locked = true; return true; }
- void unlock() { assert(locked); locked = false; }
+ void lock() {
+ assert(!locked);
+ locked = true;
+ }
+ bool try_lock() {
+ if (locked)
+ return false;
+ locked = true;
+ return true;
+ }
+ void unlock() {
+ assert(locked);
+ locked = false;
+ }
- TestMutex(TestMutex const&) = delete;
- TestMutex& operator=(TestMutex const&) = delete;
+ TestMutex(TestMutex const&) = delete;
+ TestMutex& operator=(TestMutex const&) = delete;
};
int main(int, char**) {
@@ -44,7 +55,7 @@ int main(int, char**) {
#if TEST_STD_VER >= 17
std::lock_guard lg(m);
- static_assert((std::is_same<decltype(lg), std::lock_guard<decltype(m)>>::value), "" );
+ static_assert((std::is_same<decltype(lg), std::lock_guard<decltype(m)>>::value), "");
#endif
return 0;
diff --git a/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.cons/mutex.pass.cpp b/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.cons/mutex.pass.cpp
index 863948763e2ef..c9d145addd63d 100644
--- a/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.cons/mutex.pass.cpp
+++ b/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.cons/mutex.pass.cpp
@@ -79,9 +79,9 @@ void test() {
int main(int, char**) {
#ifndef TEST_HAS_NO_THREADS
-#if TEST_STD_VER >= 17
+# if TEST_STD_VER >= 17
test<std::shared_mutex>();
-#endif
+# endif
test<std::shared_timed_mutex>();
#endif
test<TrackedMutex>();
diff --git a/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.locking/lock.pass.cpp b/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.locking/lock.pass.cpp
index 9097ac74d1272..3e0ef122ef990 100644
--- a/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.locking/lock.pass.cpp
+++ b/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.locking/lock.pass.cpp
@@ -99,9 +99,9 @@ void test() {
int main(int, char**) {
#ifndef TEST_HAS_NO_THREADS
-#if TEST_STD_VER >= 17
+# if TEST_STD_VER >= 17
test<std::shared_mutex>();
-#endif
+# endif
test<std::shared_timed_mutex>();
#endif
test<TrackedMutex>();
diff --git a/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.locking/try_lock.pass.cpp b/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.locking/try_lock.pass.cpp
index ccab79d4db016..d42b00414230c 100644
--- a/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.locking/try_lock.pass.cpp
+++ b/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.locking/try_lock.pass.cpp
@@ -104,9 +104,9 @@ void test() {
int main(int, char**) {
#ifndef TEST_HAS_NO_THREADS
-#if TEST_STD_VER >= 17
+# if TEST_STD_VER >= 17
test<std::shared_mutex>();
-#endif
+# endif
test<std::shared_timed_mutex>();
#endif
test<TrackedMutex>();
>From d717ad2d1f79c20e7fdd5101e6974b65f8ce5e84 Mon Sep 17 00:00:00 2001
From: Petr Hosek <phosek at google.com>
Date: Sat, 13 Jul 2024 21:30:37 -0700
Subject: [PATCH 5/9] Make defer_lock_t, try_to_lock_t and adopt_lock_t
available also
---
libcxx/include/__mutex/tag_types.h | 10 +++-------
1 file changed, 3 insertions(+), 7 deletions(-)
diff --git a/libcxx/include/__mutex/tag_types.h b/libcxx/include/__mutex/tag_types.h
index 05ccb8b23a6f4..2b2dd58ee4e80 100644
--- a/libcxx/include/__mutex/tag_types.h
+++ b/libcxx/include/__mutex/tag_types.h
@@ -15,8 +15,6 @@
# pragma GCC system_header
#endif
-#ifndef _LIBCPP_HAS_NO_THREADS
-
_LIBCPP_BEGIN_NAMESPACE_STD
struct _LIBCPP_EXPORTED_FROM_ABI defer_lock_t {
@@ -31,18 +29,16 @@ struct _LIBCPP_EXPORTED_FROM_ABI adopt_lock_t {
explicit adopt_lock_t() = default;
};
-# if _LIBCPP_STD_VER >= 17
+#if _LIBCPP_STD_VER >= 17
inline constexpr defer_lock_t defer_lock = defer_lock_t();
inline constexpr try_to_lock_t try_to_lock = try_to_lock_t();
inline constexpr adopt_lock_t adopt_lock = adopt_lock_t();
-# elif !defined(_LIBCPP_CXX03_LANG)
+#elif !defined(_LIBCPP_CXX03_LANG)
constexpr defer_lock_t defer_lock = defer_lock_t();
constexpr try_to_lock_t try_to_lock = try_to_lock_t();
constexpr adopt_lock_t adopt_lock = adopt_lock_t();
-# endif
+#endif
_LIBCPP_END_NAMESPACE_STD
-#endif // _LIBCPP_HAS_NO_THREADS
-
#endif // _LIBCPP___MUTEX_TAG_TYPES_H
>From 252198dcfe05fdf1bb109c1ff8003bd3e0bd61b7 Mon Sep 17 00:00:00 2001
From: Petr Hosek <phosek at google.com>
Date: Sun, 14 Jul 2024 17:57:51 -0700
Subject: [PATCH 6/9] Make std::lock and std::try_lock available also
---
libcxx/include/mutex | 11 ++++++-----
1 file changed, 6 insertions(+), 5 deletions(-)
diff --git a/libcxx/include/mutex b/libcxx/include/mutex
index d4d7539240094..efae5544eab09 100644
--- a/libcxx/include/mutex
+++ b/libcxx/include/mutex
@@ -322,6 +322,8 @@ bool recursive_timed_mutex::try_lock_until(const chrono::time_point<_Clock, _Dur
return false;
}
+#endif // !_LIBCPP_HAS_NO_THREADS
+
template <class _L0, class _L1>
_LIBCPP_HIDE_FROM_ABI int try_lock(_L0& __l0, _L1& __l1) {
unique_lock<_L0> __u0(__l0, try_to_lock_t());
@@ -335,7 +337,7 @@ _LIBCPP_HIDE_FROM_ABI int try_lock(_L0& __l0, _L1& __l1) {
return 0;
}
-# ifndef _LIBCPP_CXX03_LANG
+#ifndef _LIBCPP_CXX03_LANG
template <class _L0, class _L1, class _L2, class... _L3>
_LIBCPP_HIDE_FROM_ABI int try_lock(_L0& __l0, _L1& __l1, _L2& __l2, _L3&... __l3) {
@@ -351,7 +353,7 @@ _LIBCPP_HIDE_FROM_ABI int try_lock(_L0& __l0, _L1& __l1, _L2& __l2, _L3&... __l3
return __r;
}
-# endif // _LIBCPP_CXX03_LANG
+#endif // _LIBCPP_CXX03_LANG
template <class _L0, class _L1>
_LIBCPP_HIDE_FROM_ABI void lock(_L0& __l0, _L1& __l1) {
@@ -375,7 +377,7 @@ _LIBCPP_HIDE_FROM_ABI void lock(_L0& __l0, _L1& __l1) {
}
}
-# ifndef _LIBCPP_CXX03_LANG
+#ifndef _LIBCPP_CXX03_LANG
template <class _L0, class _L1, class _L2, class... _L3>
void __lock_first(int __i, _L0& __l0, _L1& __l1, _L2& __l2, _L3&... __l3) {
@@ -418,8 +420,7 @@ inline _LIBCPP_HIDE_FROM_ABI void lock(_L0& __l0, _L1& __l1, _L2& __l2, _L3&...
std::__lock_first(0, __l0, __l1, __l2, __l3...);
}
-# endif // _LIBCPP_CXX03_LANG
-#endif // !_LIBCPP_HAS_NO_THREADS
+#endif // _LIBCPP_CXX03_LANG
#if _LIBCPP_STD_VER >= 17
template <class... _Mutexes>
>From 3ffe2d1a27378ffc6c4e32bd0445c4e47722db6d Mon Sep 17 00:00:00 2001
From: Petr Hosek <phosek at google.com>
Date: Sun, 14 Jul 2024 23:39:30 -0700
Subject: [PATCH 7/9] Exclude std::unique_lock, std::scoped_lock and
std::shared_lock
---
libcxx/include/__mutex/unique_lock.h | 4 ++++
libcxx/include/mutex | 15 +++++++--------
libcxx/include/shared_mutex | 15 ++++++++-------
.../thread.lock.scoped/adopt_lock.pass.cpp | 3 ++-
.../thread.lock/thread.lock.scoped/mutex.pass.cpp | 3 ++-
.../thread.lock.shared.cons/mutex.pass.cpp | 7 +++----
.../thread.lock.shared.locking/lock.pass.cpp | 7 +++----
.../thread.lock.shared.locking/try_lock.pass.cpp | 7 +++----
.../try_lock_for.pass.cpp | 3 ++-
.../try_lock_until.pass.cpp | 3 ++-
.../thread.lock.shared.locking/unlock.pass.cpp | 3 ++-
.../thread.lock.shared.mod/member_swap.pass.cpp | 3 ++-
.../nonmember_swap.pass.cpp | 3 ++-
.../thread.lock.shared.mod/release.pass.cpp | 3 ++-
.../thread.lock.shared.obs/op_bool.pass.cpp | 3 ++-
.../thread.lock.unique.locking/try_lock.pass.cpp | 3 ++-
.../try_lock_for.pass.cpp | 3 ++-
.../try_lock_until.pass.cpp | 3 ++-
.../thread.lock.unique.mod/member_swap.pass.cpp | 2 ++
.../nonmember_swap.pass.cpp | 2 ++
.../thread.lock.unique.mod/release.pass.cpp | 2 ++
21 files changed, 58 insertions(+), 39 deletions(-)
diff --git a/libcxx/include/__mutex/unique_lock.h b/libcxx/include/__mutex/unique_lock.h
index 5df791de4c742..4a616ba51ee1c 100644
--- a/libcxx/include/__mutex/unique_lock.h
+++ b/libcxx/include/__mutex/unique_lock.h
@@ -22,6 +22,8 @@
# pragma GCC system_header
#endif
+#ifndef _LIBCPP_HAS_NO_THREADS
+
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _Mutex>
@@ -170,4 +172,6 @@ inline _LIBCPP_HIDE_FROM_ABI void swap(unique_lock<_Mutex>& __x, unique_lock<_Mu
_LIBCPP_END_NAMESPACE_STD
+#endif // _LIBCPP_HAS_NO_THREADS
+
#endif // _LIBCPP___MUTEX_UNIQUE_LOCK_H
diff --git a/libcxx/include/mutex b/libcxx/include/mutex
index efae5544eab09..02c52dd72f02b 100644
--- a/libcxx/include/mutex
+++ b/libcxx/include/mutex
@@ -322,8 +322,6 @@ bool recursive_timed_mutex::try_lock_until(const chrono::time_point<_Clock, _Dur
return false;
}
-#endif // !_LIBCPP_HAS_NO_THREADS
-
template <class _L0, class _L1>
_LIBCPP_HIDE_FROM_ABI int try_lock(_L0& __l0, _L1& __l1) {
unique_lock<_L0> __u0(__l0, try_to_lock_t());
@@ -337,7 +335,7 @@ _LIBCPP_HIDE_FROM_ABI int try_lock(_L0& __l0, _L1& __l1) {
return 0;
}
-#ifndef _LIBCPP_CXX03_LANG
+# ifndef _LIBCPP_CXX03_LANG
template <class _L0, class _L1, class _L2, class... _L3>
_LIBCPP_HIDE_FROM_ABI int try_lock(_L0& __l0, _L1& __l1, _L2& __l2, _L3&... __l3) {
@@ -353,7 +351,7 @@ _LIBCPP_HIDE_FROM_ABI int try_lock(_L0& __l0, _L1& __l1, _L2& __l2, _L3&... __l3
return __r;
}
-#endif // _LIBCPP_CXX03_LANG
+# endif // _LIBCPP_CXX03_LANG
template <class _L0, class _L1>
_LIBCPP_HIDE_FROM_ABI void lock(_L0& __l0, _L1& __l1) {
@@ -377,7 +375,7 @@ _LIBCPP_HIDE_FROM_ABI void lock(_L0& __l0, _L1& __l1) {
}
}
-#ifndef _LIBCPP_CXX03_LANG
+# ifndef _LIBCPP_CXX03_LANG
template <class _L0, class _L1, class _L2, class... _L3>
void __lock_first(int __i, _L0& __l0, _L1& __l1, _L2& __l2, _L3&... __l3) {
@@ -420,9 +418,9 @@ inline _LIBCPP_HIDE_FROM_ABI void lock(_L0& __l0, _L1& __l1, _L2& __l2, _L3&...
std::__lock_first(0, __l0, __l1, __l2, __l3...);
}
-#endif // _LIBCPP_CXX03_LANG
+# endif // _LIBCPP_CXX03_LANG
-#if _LIBCPP_STD_VER >= 17
+# if _LIBCPP_STD_VER >= 17
template <class... _Mutexes>
class _LIBCPP_TEMPLATE_VIS scoped_lock;
@@ -493,7 +491,8 @@ private:
};
_LIBCPP_CTAD_SUPPORTED_FOR_TYPE(scoped_lock);
-#endif // _LIBCPP_STD_VER >= 17
+# endif // _LIBCPP_STD_VER >= 17
+#endif // !_LIBCPP_HAS_NO_THREADS
_LIBCPP_END_NAMESPACE_STD
diff --git a/libcxx/include/shared_mutex b/libcxx/include/shared_mutex
index 63d24e0182fe5..397ac290d9b2e 100644
--- a/libcxx/include/shared_mutex
+++ b/libcxx/include/shared_mutex
@@ -122,11 +122,16 @@ template <class Mutex>
*/
+#include <__config>
+
+#ifdef _LIBCPP_HAS_NO_THREADS
+# error "<shared_mutex> is not supported since libc++ has been configured without support for threads."
+#endif
+
#include <__chrono/duration.h>
#include <__chrono/steady_clock.h>
#include <__chrono/time_point.h>
#include <__condition_variable/condition_variable.h>
-#include <__config>
#include <__memory/addressof.h>
#include <__mutex/mutex.h>
#include <__mutex/tag_types.h>
@@ -147,8 +152,6 @@ _LIBCPP_PUSH_MACROS
_LIBCPP_BEGIN_NAMESPACE_STD
-# ifndef _LIBCPP_HAS_NO_THREADS
-
struct _LIBCPP_EXPORTED_FROM_ABI __shared_mutex_base {
mutex __mut_;
condition_variable __gate1_;
@@ -178,7 +181,7 @@ struct _LIBCPP_EXPORTED_FROM_ABI __shared_mutex_base {
// native_handle_type native_handle(); // See 30.2.3
};
-# if _LIBCPP_STD_VER >= 17
+# if _LIBCPP_STD_VER >= 17
class _LIBCPP_EXPORTED_FROM_ABI _LIBCPP_THREAD_SAFETY_ANNOTATION(__capability__("shared_mutex")) shared_mutex {
__shared_mutex_base __base_;
@@ -215,7 +218,7 @@ public:
// typedef __shared_mutex_base::native_handle_type native_handle_type;
// _LIBCPP_HIDE_FROM_ABI native_handle_type native_handle() { return __base::unlock_shared(); }
};
-# endif
+# endif
class _LIBCPP_EXPORTED_FROM_ABI
_LIBCPP_THREAD_SAFETY_ANNOTATION(__capability__("shared_timed_mutex")) shared_timed_mutex {
@@ -305,8 +308,6 @@ bool shared_timed_mutex::try_lock_shared_until(const chrono::time_point<_Clock,
return true;
}
-# endif // !_LIBCPP_HAS_NO_THREADS
-
template <class _Mutex>
class shared_lock {
public:
diff --git a/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.scoped/adopt_lock.pass.cpp b/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.scoped/adopt_lock.pass.cpp
index a48caf7fdbb51..83b29ff669dca 100644
--- a/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.scoped/adopt_lock.pass.cpp
+++ b/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.scoped/adopt_lock.pass.cpp
@@ -5,7 +5,8 @@
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
-
+//
+// UNSUPPORTED: no-threads
// UNSUPPORTED: c++03, c++11, c++14
// <mutex>
diff --git a/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.scoped/mutex.pass.cpp b/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.scoped/mutex.pass.cpp
index 0812c33c22226..f953fa4f8d6df 100644
--- a/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.scoped/mutex.pass.cpp
+++ b/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.scoped/mutex.pass.cpp
@@ -5,7 +5,8 @@
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
-
+//
+// UNSUPPORTED: no-threads
// UNSUPPORTED: c++03, c++11, c++14
// <mutex>
diff --git a/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.cons/mutex.pass.cpp b/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.cons/mutex.pass.cpp
index c9d145addd63d..ece330134f2cd 100644
--- a/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.cons/mutex.pass.cpp
+++ b/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.cons/mutex.pass.cpp
@@ -6,6 +6,7 @@
//
//===----------------------------------------------------------------------===//
+// UNSUPPORTED: no-threads
// UNSUPPORTED: c++03, c++11
// <shared_mutex>
@@ -78,12 +79,10 @@ void test() {
}
int main(int, char**) {
-#ifndef TEST_HAS_NO_THREADS
-# if TEST_STD_VER >= 17
+#if TEST_STD_VER >= 17
test<std::shared_mutex>();
-# endif
- test<std::shared_timed_mutex>();
#endif
+ test<std::shared_timed_mutex>();
test<TrackedMutex>();
// Use shared_lock with a dummy mutex class that tracks whether each
diff --git a/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.locking/lock.pass.cpp b/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.locking/lock.pass.cpp
index 3e0ef122ef990..d36ca1d38f8f1 100644
--- a/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.locking/lock.pass.cpp
+++ b/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.locking/lock.pass.cpp
@@ -6,6 +6,7 @@
//
//===----------------------------------------------------------------------===//
+// UNSUPPORTED: no-threads
// UNSUPPORTED: c++03, c++11
// <shared_mutex>
@@ -98,12 +99,10 @@ void test() {
}
int main(int, char**) {
-#ifndef TEST_HAS_NO_THREADS
-# if TEST_STD_VER >= 17
+#if TEST_STD_VER >= 17
test<std::shared_mutex>();
-# endif
- test<std::shared_timed_mutex>();
#endif
+ test<std::shared_timed_mutex>();
test<TrackedMutex>();
// Use shared_lock with a dummy mutex class that tracks whether each
diff --git a/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.locking/try_lock.pass.cpp b/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.locking/try_lock.pass.cpp
index d42b00414230c..b6146680b6e35 100644
--- a/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.locking/try_lock.pass.cpp
+++ b/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.locking/try_lock.pass.cpp
@@ -6,6 +6,7 @@
//
//===----------------------------------------------------------------------===//
+// UNSUPPORTED: no-threads
// UNSUPPORTED: c++03, c++11
// <shared_mutex>
@@ -103,12 +104,10 @@ void test() {
}
int main(int, char**) {
-#ifndef TEST_HAS_NO_THREADS
-# if TEST_STD_VER >= 17
+#if TEST_STD_VER >= 17
test<std::shared_mutex>();
-# endif
- test<std::shared_timed_mutex>();
#endif
+ test<std::shared_timed_mutex>();
test<TrackedMutex>();
// Use shared_lock with a dummy mutex class that tracks whether each
diff --git a/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.locking/try_lock_for.pass.cpp b/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.locking/try_lock_for.pass.cpp
index 3b3c34f0b9351..d28ae395ccb0d 100644
--- a/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.locking/try_lock_for.pass.cpp
+++ b/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.locking/try_lock_for.pass.cpp
@@ -5,7 +5,8 @@
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
-
+//
+// UNSUPPORTED: no-threads
// UNSUPPORTED: c++03, c++11
// <shared_mutex>
diff --git a/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.locking/try_lock_until.pass.cpp b/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.locking/try_lock_until.pass.cpp
index ab5f3c7b6a935..880bf1cbd4999 100644
--- a/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.locking/try_lock_until.pass.cpp
+++ b/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.locking/try_lock_until.pass.cpp
@@ -5,7 +5,8 @@
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
-
+//
+// UNSUPPORTED: no-threads
// UNSUPPORTED: c++03, c++11
// <shared_mutex>
diff --git a/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.locking/unlock.pass.cpp b/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.locking/unlock.pass.cpp
index 0fcab6d346699..4f31a75f68dec 100644
--- a/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.locking/unlock.pass.cpp
+++ b/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.locking/unlock.pass.cpp
@@ -5,7 +5,8 @@
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
-
+//
+// UNSUPPORTED: no-threads
// UNSUPPORTED: c++03, c++11
// <shared_mutex>
diff --git a/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.mod/member_swap.pass.cpp b/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.mod/member_swap.pass.cpp
index af904434efd82..aeca2022ba9c9 100644
--- a/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.mod/member_swap.pass.cpp
+++ b/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.mod/member_swap.pass.cpp
@@ -5,7 +5,8 @@
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
-
+//
+// UNSUPPORTED: no-threads
// UNSUPPORTED: c++03, c++11
// <shared_mutex>
diff --git a/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.mod/nonmember_swap.pass.cpp b/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.mod/nonmember_swap.pass.cpp
index a2827b0292e76..25e5cf624caa8 100644
--- a/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.mod/nonmember_swap.pass.cpp
+++ b/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.mod/nonmember_swap.pass.cpp
@@ -5,7 +5,8 @@
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
-
+//
+// UNSUPPORTED: no-threads
// UNSUPPORTED: c++03, c++11
// <shared_mutex>
diff --git a/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.mod/release.pass.cpp b/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.mod/release.pass.cpp
index 412b9ba023827..9dfdd0b0ded2f 100644
--- a/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.mod/release.pass.cpp
+++ b/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.mod/release.pass.cpp
@@ -5,7 +5,8 @@
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
-
+//
+// UNSUPPORTED: no-threads
// UNSUPPORTED: c++03, c++11
// <shared_mutex>
diff --git a/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.obs/op_bool.pass.cpp b/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.obs/op_bool.pass.cpp
index e26e8122ab191..1186671ad04d2 100644
--- a/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.obs/op_bool.pass.cpp
+++ b/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.obs/op_bool.pass.cpp
@@ -5,7 +5,8 @@
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
-
+//
+// UNSUPPORTED: no-threads
// UNSUPPORTED: c++03, c++11
// <shared_mutex>
diff --git a/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.unique/thread.lock.unique.locking/try_lock.pass.cpp b/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.unique/thread.lock.unique.locking/try_lock.pass.cpp
index 9c6a971bc9f33..4cf5ec2ab5ccf 100644
--- a/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.unique/thread.lock.unique.locking/try_lock.pass.cpp
+++ b/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.unique/thread.lock.unique.locking/try_lock.pass.cpp
@@ -5,7 +5,8 @@
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
-
+//
+// UNSUPPORTED: no-threads
// UNSUPPORTED: c++03
// ALLOW_RETRIES: 2
diff --git a/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.unique/thread.lock.unique.locking/try_lock_for.pass.cpp b/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.unique/thread.lock.unique.locking/try_lock_for.pass.cpp
index b211ce3afce07..8e7004e5eec85 100644
--- a/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.unique/thread.lock.unique.locking/try_lock_for.pass.cpp
+++ b/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.unique/thread.lock.unique.locking/try_lock_for.pass.cpp
@@ -5,7 +5,8 @@
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
-
+//
+// UNSUPPORTED: no-threads
// UNSUPPORTED: c++03
// <mutex>
diff --git a/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.unique/thread.lock.unique.locking/try_lock_until.pass.cpp b/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.unique/thread.lock.unique.locking/try_lock_until.pass.cpp
index 67c0cb94e9f90..077bc517399ab 100644
--- a/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.unique/thread.lock.unique.locking/try_lock_until.pass.cpp
+++ b/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.unique/thread.lock.unique.locking/try_lock_until.pass.cpp
@@ -5,7 +5,8 @@
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
-
+//
+// UNSUPPORTED: no-threads
// UNSUPPORTED: c++03
// <mutex>
diff --git a/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.unique/thread.lock.unique.mod/member_swap.pass.cpp b/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.unique/thread.lock.unique.mod/member_swap.pass.cpp
index 79731dec09bd5..fc12d3baea202 100644
--- a/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.unique/thread.lock.unique.mod/member_swap.pass.cpp
+++ b/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.unique/thread.lock.unique.mod/member_swap.pass.cpp
@@ -5,6 +5,8 @@
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
// <mutex>
diff --git a/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.unique/thread.lock.unique.mod/nonmember_swap.pass.cpp b/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.unique/thread.lock.unique.mod/nonmember_swap.pass.cpp
index f4c1661556f94..03d268c4b9306 100644
--- a/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.unique/thread.lock.unique.mod/nonmember_swap.pass.cpp
+++ b/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.unique/thread.lock.unique.mod/nonmember_swap.pass.cpp
@@ -5,6 +5,8 @@
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
// <mutex>
diff --git a/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.unique/thread.lock.unique.mod/release.pass.cpp b/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.unique/thread.lock.unique.mod/release.pass.cpp
index fd2ed6dd5afb8..4f2d59c3d333d 100644
--- a/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.unique/thread.lock.unique.mod/release.pass.cpp
+++ b/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.unique/thread.lock.unique.mod/release.pass.cpp
@@ -5,6 +5,8 @@
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
// <mutex>
>From cd005429944aee2d0d885ac5d2808aebf8fbf006 Mon Sep 17 00:00:00 2001
From: Petr Hosek <phosek at google.com>
Date: Mon, 15 Jul 2024 15:59:09 -0700
Subject: [PATCH 8/9] Update tests
---
...mpile.fail.cpp => assign.compile.pass.cpp} | 12 +---
...compile.fail.cpp => copy.compile.pass.cpp} | 10 +---
.../thread.lock.guard/lock.pass.cpp | 56 +++++++++++++++++++
.../thread.lock.guard/mutex.pass.cpp | 41 +++++---------
4 files changed, 76 insertions(+), 43 deletions(-)
rename libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.guard/{assign.compile.fail.cpp => assign.compile.pass.cpp} (73%)
rename libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.guard/{copy.compile.fail.cpp => copy.compile.pass.cpp} (76%)
create mode 100644 libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.guard/lock.pass.cpp
diff --git a/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.guard/assign.compile.fail.cpp b/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.guard/assign.compile.pass.cpp
similarity index 73%
rename from libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.guard/assign.compile.fail.cpp
rename to libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.guard/assign.compile.pass.cpp
index 330cae19d1fea..073090b3ec1ee 100644
--- a/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.guard/assign.compile.fail.cpp
+++ b/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.guard/assign.compile.pass.cpp
@@ -6,8 +6,6 @@
//
//===----------------------------------------------------------------------===//
-// UNSUPPORTED: no-threads
-
// <mutex>
// template <class Mutex> class lock_guard;
@@ -16,13 +14,9 @@
#include <mutex>
-int main(int, char**)
-{
- std::mutex m0;
- std::mutex m1;
- std::lock_guard<std::mutex> lg0(m0);
- std::lock_guard<std::mutex> lg(m1);
- lg = lg0;
+class Lock;
+int main(int, char**) {
+ static_assert(!std::is_copy_assignable<std::lock_guard<Lock>>::value, "");
return 0;
}
diff --git a/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.guard/copy.compile.fail.cpp b/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.guard/copy.compile.pass.cpp
similarity index 76%
rename from libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.guard/copy.compile.fail.cpp
rename to libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.guard/copy.compile.pass.cpp
index 7e9dd43a6bb32..c3911182be032 100644
--- a/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.guard/copy.compile.fail.cpp
+++ b/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.guard/copy.compile.pass.cpp
@@ -6,8 +6,6 @@
//
//===----------------------------------------------------------------------===//
-// UNSUPPORTED: no-threads
-
// <mutex>
// template <class Mutex> class lock_guard;
@@ -16,11 +14,9 @@
#include <mutex>
-int main(int, char**)
-{
- std::mutex m;
- std::lock_guard<std::mutex> lg0(m);
- std::lock_guard<std::mutex> lg(lg0);
+class Lock;
+int main(int, char**) {
+ static_assert(!std::is_copy_constructible<std::lock_guard<Lock>>::value, "");
return 0;
}
diff --git a/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.guard/lock.pass.cpp b/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.guard/lock.pass.cpp
new file mode 100644
index 0000000000000..e2d05654f7862
--- /dev/null
+++ b/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.guard/lock.pass.cpp
@@ -0,0 +1,56 @@
+//===----------------------------------------------------------------------===//
+//
+// 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
+//
+//===----------------------------------------------------------------------===//
+//
+
+// <mutex>
+
+// template <class Mutex> class lock_guard;
+
+// explicit lock_guard(mutex_type& m);
+
+// template<class _Mutex> lock_guard(lock_guard<_Mutex>)
+// -> lock_guard<_Mutex>; // C++17
+
+#include <mutex>
+#include <cassert>
+#include "test_macros.h"
+
+struct Lock {
+ bool locked = false;
+
+ Lock() = default;
+ ~Lock() { assert(!locked); }
+
+ void lock() {
+ assert(!locked);
+ locked = true;
+ }
+ void unlock() {
+ assert(locked);
+ locked = false;
+ }
+
+ Lock(Lock const&) = delete;
+ Lock& operator=(Lock const&) = delete;
+};
+
+int main(int, char**) {
+ Lock l;
+ {
+ std::lock_guard<Lock> lg(l);
+ assert(l.locked);
+ }
+ assert(!l.locked);
+
+#if TEST_STD_VER >= 17
+ std::lock_guard lg(l);
+ static_assert((std::is_same<decltype(l), std::lock_guard<decltype(l)>>::value), "");
+#endif
+
+ return 0;
+}
diff --git a/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.guard/mutex.pass.cpp b/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.guard/mutex.pass.cpp
index ca902f16f81d7..6025b0c3b465b 100644
--- a/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.guard/mutex.pass.cpp
+++ b/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.guard/mutex.pass.cpp
@@ -18,44 +18,31 @@
// -> lock_guard<_Mutex>; // C++17
#include <mutex>
+#include <cstdlib>
#include <cassert>
+
+#include "make_test_thread.h"
#include "test_macros.h"
-struct TestMutex {
- bool locked = false;
- TestMutex() = default;
- ~TestMutex() { assert(!locked); }
+std::mutex m;
- void lock() {
- assert(!locked);
- locked = true;
- }
- bool try_lock() {
- if (locked)
- return false;
- locked = true;
- return true;
- }
- void unlock() {
- assert(locked);
- locked = false;
- }
-
- TestMutex(TestMutex const&) = delete;
- TestMutex& operator=(TestMutex const&) = delete;
-};
+void do_try_lock() {
+ assert(m.try_lock() == false);
+}
int main(int, char**) {
- TestMutex m;
{
- std::lock_guard<TestMutex> lg(m);
- assert(m.locked);
+ std::lock_guard<std::mutex> lg(m);
+ std::thread t = support::make_test_thread(do_try_lock);
+ t.join();
}
- assert(!m.locked);
+
+ m.lock();
+ m.unlock();
#if TEST_STD_VER >= 17
std::lock_guard lg(m);
- static_assert((std::is_same<decltype(lg), std::lock_guard<decltype(m)>>::value), "");
+ static_assert((std::is_same<decltype(lg), std::lock_guard<decltype(m)>>::value), "" );
#endif
return 0;
>From 757a485ad22f2ff450a44217ef85d43af6e9ff1d Mon Sep 17 00:00:00 2001
From: Petr Hosek <phosek at google.com>
Date: Mon, 15 Jul 2024 16:09:52 -0700
Subject: [PATCH 9/9] Update test
---
.../thread.lock.guard/lock.pass.cpp | 22 +++++++++----------
1 file changed, 11 insertions(+), 11 deletions(-)
diff --git a/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.guard/lock.pass.cpp b/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.guard/lock.pass.cpp
index e2d05654f7862..fc82b74165aaa 100644
--- a/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.guard/lock.pass.cpp
+++ b/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.guard/lock.pass.cpp
@@ -20,11 +20,11 @@
#include <cassert>
#include "test_macros.h"
-struct Lock {
+struct MyMutex {
bool locked = false;
- Lock() = default;
- ~Lock() { assert(!locked); }
+ MyMutex() = default;
+ ~MyMutex() { assert(!locked); }
void lock() {
assert(!locked);
@@ -35,21 +35,21 @@ struct Lock {
locked = false;
}
- Lock(Lock const&) = delete;
- Lock& operator=(Lock const&) = delete;
+ MyMutex(MyMutex const&) = delete;
+ MyMutex& operator=(MyMutex const&) = delete;
};
int main(int, char**) {
- Lock l;
+ MyMutex m;
{
- std::lock_guard<Lock> lg(l);
- assert(l.locked);
+ std::lock_guard<MyMutex> lg(m);
+ assert(m.locked);
}
- assert(!l.locked);
+ assert(!m.locked);
#if TEST_STD_VER >= 17
- std::lock_guard lg(l);
- static_assert((std::is_same<decltype(l), std::lock_guard<decltype(l)>>::value), "");
+ std::lock_guard lg(m);
+ static_assert((std::is_same<decltype(lg), std::lock_guard<decltype(m)>>::value), "");
#endif
return 0;
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