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bits /
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Size
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algorithmfwd.h
23.97
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align.h
3.62
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alloc_traits.h
26.98
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allocated_ptr.h
3.25
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allocator.h
9.51
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atomic_base.h
56.07
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atomic_futex.h
12.1
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atomic_lockfree_defines.h
2.3
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atomic_timed_wait.h
13.21
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atomic_wait.h
12.26
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basic_ios.h
15.7
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basic_ios.tcc
5.94
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basic_string.h
246.04
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basic_string.tcc
52.92
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boost_concept_check.h
26.54
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c++0x_warning.h
1.44
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char_traits.h
28.66
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charconv.h
3.35
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codecvt.h
24.9
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concept_check.h
3.34
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cpp_type_traits.h
13.67
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cxxabi_forced.h
1.77
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cxxabi_init_exception.h
2.17
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deque.tcc
41.37
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enable_special_members.h
12.16
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erase_if.h
2.02
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exception.h
2.45
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exception_defines.h
1.61
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exception_ptr.h
7.46
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forward_list.h
49.21
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forward_list.tcc
13.71
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fs_dir.h
16.02
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fs_fwd.h
10.52
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fs_ops.h
10.49
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fs_path.h
38.81
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fstream.tcc
32.88
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functexcept.h
3.43
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functional_hash.h
8.39
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gslice.h
5.39
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gslice_array.h
7.71
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hash_bytes.h
2.1
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hashtable.h
82.96
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hashtable_policy.h
60.7
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indirect_array.h
7.72
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invoke.h
5.92
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ios_base.h
31.19
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istream.tcc
30.85
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iterator_concepts.h
32.55
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list.tcc
16.8
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locale_classes.h
24.46
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locale_classes.tcc
8.18
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locale_conv.h
18.38
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locale_facets.h
91.46
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locale_facets.tcc
39.51
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locale_facets_nonio.h
68.07
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locale_facets_nonio.tcc
46.42
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localefwd.h
5.8
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mask_array.h
7.54
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max_size_type.h
22.18
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memoryfwd.h
2.45
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move.h
6.64
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nested_exception.h
4.77
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node_handle.h
10.66
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ostream.tcc
12.03
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ostream_insert.h
3.94
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parse_numbers.h
7.79
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postypes.h
8.27
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predefined_ops.h
9.94
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ptr_traits.h
6.55
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quoted_string.h
4.93
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random.h
174.18
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random.tcc
103.21
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range_access.h
10.46
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ranges_algo.h
114.09
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ranges_algobase.h
18.43
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ranges_base.h
23.82
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ranges_cmp.h
5.88
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ranges_uninitialized.h
17.71
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ranges_util.h
20.11
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refwrap.h
12.9
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regex.h
101.53
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regex.tcc
16.11
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regex_automaton.h
10.54
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regex_automaton.tcc
7.54
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regex_compiler.h
15.84
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regex_compiler.tcc
18.71
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regex_constants.h
15.18
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regex_error.h
4.9
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regex_executor.h
8.64
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regex_executor.tcc
18.4
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regex_scanner.h
6.88
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regex_scanner.tcc
14.89
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semaphore_base.h
7.75
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shared_ptr.h
30.25
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shared_ptr_atomic.h
9.64
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shared_ptr_base.h
53.62
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slice_array.h
9.39
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specfun.h
46.13
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sstream.tcc
9.91
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std_abs.h
3.3
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std_function.h
22.33
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std_mutex.h
6.29
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std_thread.h
8.39
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stl_algo.h
209.67
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stl_algobase.h
74.47
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stl_bvector.h
34.74
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stl_construct.h
8.59
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stl_deque.h
75.17
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stl_function.h
42.87
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stl_heap.h
20.27
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stl_iterator.h
77
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stl_iterator_base_funcs.h
7.99
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stl_iterator_base_types.h
9.44
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stl_list.h
68.14
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stl_map.h
53.41
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stl_multimap.h
42.51
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stl_multiset.h
36.79
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stl_numeric.h
14.26
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stl_pair.h
19.66
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stl_queue.h
24.45
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stl_raw_storage_iter.h
3.74
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stl_relops.h
4.49
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stl_set.h
37.05
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stl_stack.h
12.39
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stl_tempbuf.h
8.45
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stl_tree.h
72.19
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stl_uninitialized.h
33.22
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stl_vector.h
64.37
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stream_iterator.h
7.52
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streambuf.tcc
4.81
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streambuf_iterator.h
15.17
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string_view.tcc
7
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stringfwd.h
2.63
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this_thread_sleep.h
3.23
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uniform_int_dist.h
12.75
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unique_lock.h
6
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unique_ptr.h
31.77
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unordered_map.h
74.87
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unordered_set.h
61.46
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uses_allocator.h
6.74
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uses_allocator_args.h
7.38
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valarray_after.h
22.74
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valarray_array.h
20.8
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valarray_array.tcc
7.08
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valarray_before.h
18.69
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vector.tcc
30.26
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Code Editor : std_mutex.h
// std::mutex implementation -*- C++ -*- // Copyright (C) 2003-2021 Free Software Foundation, Inc. // // This file is part of the GNU ISO C++ Library. This library is free // software; you can redistribute it and/or modify it under the // terms of the GNU General Public License as published by the // Free Software Foundation; either version 3, or (at your option) // any later version. // This library is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // Under Section 7 of GPL version 3, you are granted additional // permissions described in the GCC Runtime Library Exception, version // 3.1, as published by the Free Software Foundation. // You should have received a copy of the GNU General Public License and // a copy of the GCC Runtime Library Exception along with this program; // see the files COPYING3 and COPYING.RUNTIME respectively. If not, see // <http://www.gnu.org/licenses/>. /** @file bits/std_mutex.h * This is an internal header file, included by other library headers. * Do not attempt to use it directly. @headername{mutex} */ #ifndef _GLIBCXX_MUTEX_H #define _GLIBCXX_MUTEX_H 1 #pragma GCC system_header #if __cplusplus < 201103L # include <bits/c++0x_warning.h> #else #include <system_error> #include <bits/functexcept.h> #include <bits/gthr.h> namespace std _GLIBCXX_VISIBILITY(default) { _GLIBCXX_BEGIN_NAMESPACE_VERSION /** * @defgroup mutexes Mutexes * @ingroup concurrency * * Classes for mutex support. * @{ */ #ifdef _GLIBCXX_HAS_GTHREADS // Common base class for std::mutex and std::timed_mutex class __mutex_base { protected: typedef __gthread_mutex_t __native_type; #ifdef __GTHREAD_MUTEX_INIT __native_type _M_mutex = __GTHREAD_MUTEX_INIT; constexpr __mutex_base() noexcept = default; #else __native_type _M_mutex; __mutex_base() noexcept { // XXX EAGAIN, ENOMEM, EPERM, EBUSY(may), EINVAL(may) __GTHREAD_MUTEX_INIT_FUNCTION(&_M_mutex); } ~__mutex_base() noexcept { __gthread_mutex_destroy(&_M_mutex); } #endif __mutex_base(const __mutex_base&) = delete; __mutex_base& operator=(const __mutex_base&) = delete; }; /// The standard mutex type. class mutex : private __mutex_base { public: typedef __native_type* native_handle_type; #ifdef __GTHREAD_MUTEX_INIT constexpr #endif mutex() noexcept = default; ~mutex() = default; mutex(const mutex&) = delete; mutex& operator=(const mutex&) = delete; void lock() { int __e = __gthread_mutex_lock(&_M_mutex); // EINVAL, EAGAIN, EBUSY, EINVAL, EDEADLK(may) if (__e) __throw_system_error(__e); } bool try_lock() noexcept { // XXX EINVAL, EAGAIN, EBUSY return !__gthread_mutex_trylock(&_M_mutex); } void unlock() { // XXX EINVAL, EAGAIN, EPERM __gthread_mutex_unlock(&_M_mutex); } native_handle_type native_handle() noexcept { return &_M_mutex; } }; // Implementation details for std::condition_variable class __condvar { using timespec = __gthread_time_t; public: __condvar() noexcept { #ifndef __GTHREAD_COND_INIT __GTHREAD_COND_INIT_FUNCTION(&_M_cond); #endif } ~__condvar() { int __e __attribute__((__unused__)) = __gthread_cond_destroy(&_M_cond); __glibcxx_assert(__e != EBUSY); // threads are still blocked } __condvar(const __condvar&) = delete; __condvar& operator=(const __condvar&) = delete; __gthread_cond_t* native_handle() noexcept { return &_M_cond; } // Expects: Calling thread has locked __m. void wait(mutex& __m) noexcept { int __e __attribute__((__unused__)) = __gthread_cond_wait(&_M_cond, __m.native_handle()); __glibcxx_assert(__e == 0); } void wait_until(mutex& __m, timespec& __abs_time) noexcept { __gthread_cond_timedwait(&_M_cond, __m.native_handle(), &__abs_time); } #ifdef _GLIBCXX_USE_PTHREAD_COND_CLOCKWAIT void wait_until(mutex& __m, clockid_t __clock, timespec& __abs_time) noexcept { pthread_cond_clockwait(&_M_cond, __m.native_handle(), __clock, &__abs_time); } #endif void notify_one() noexcept { int __e __attribute__((__unused__)) = __gthread_cond_signal(&_M_cond); __glibcxx_assert(__e == 0); } void notify_all() noexcept { int __e __attribute__((__unused__)) = __gthread_cond_broadcast(&_M_cond); __glibcxx_assert(__e == 0); } protected: #ifdef __GTHREAD_COND_INIT __gthread_cond_t _M_cond = __GTHREAD_COND_INIT; #else __gthread_cond_t _M_cond; #endif }; #endif // _GLIBCXX_HAS_GTHREADS /// Do not acquire ownership of the mutex. struct defer_lock_t { explicit defer_lock_t() = default; }; /// Try to acquire ownership of the mutex without blocking. struct try_to_lock_t { explicit try_to_lock_t() = default; }; /// Assume the calling thread has already obtained mutex ownership /// and manage it. struct adopt_lock_t { explicit adopt_lock_t() = default; }; /// Tag used to prevent a scoped lock from acquiring ownership of a mutex. _GLIBCXX17_INLINE constexpr defer_lock_t defer_lock { }; /// Tag used to prevent a scoped lock from blocking if a mutex is locked. _GLIBCXX17_INLINE constexpr try_to_lock_t try_to_lock { }; /// Tag used to make a scoped lock take ownership of a locked mutex. _GLIBCXX17_INLINE constexpr adopt_lock_t adopt_lock { }; /** @brief A simple scoped lock type. * * A lock_guard controls mutex ownership within a scope, releasing * ownership in the destructor. */ template<typename _Mutex> class lock_guard { public: typedef _Mutex mutex_type; explicit lock_guard(mutex_type& __m) : _M_device(__m) { _M_device.lock(); } lock_guard(mutex_type& __m, adopt_lock_t) noexcept : _M_device(__m) { } // calling thread owns mutex ~lock_guard() { _M_device.unlock(); } lock_guard(const lock_guard&) = delete; lock_guard& operator=(const lock_guard&) = delete; private: mutex_type& _M_device; }; /// @} group mutexes _GLIBCXX_END_NAMESPACE_VERSION } // namespace #endif // C++11 #endif // _GLIBCXX_MUTEX_H
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