diff options
Diffstat (limited to 'libstdc++-v3/include/std/mutex')
| -rw-r--r-- | libstdc++-v3/include/std/mutex | 152 |
1 files changed, 76 insertions, 76 deletions
diff --git a/libstdc++-v3/include/std/mutex b/libstdc++-v3/include/std/mutex index 57e817fcc79..935b16e57c2 100644 --- a/libstdc++-v3/include/std/mutex +++ b/libstdc++-v3/include/std/mutex @@ -1,6 +1,6 @@ // <mutex> -*- C++ -*- -// Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008 +// Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008 // Free Software Foundation, Inc. // // This file is part of the GNU ISO C++ Library. This library is free @@ -44,9 +44,9 @@ #include <exception> #include <cstddef> #include <bits/functexcept.h> -#include <bits/gthr.h> +#include <bits/gthr.h> -namespace std +namespace std { // XXX class system_time; @@ -63,47 +63,45 @@ namespace std native_handle_type __tmp = __GTHREAD_MUTEX_INIT; _M_mutex = __tmp; #else - int __e = __GTHREAD_MUTEX_INIT_FUNCTION(&_M_mutex); + __GTHREAD_MUTEX_INIT_FUNCTION(&_M_mutex); +#endif // EAGAIN, ENOMEM, EPERM, EBUSY(may), EINVAL(may) - if ( __e) - __throw_system_error(__e); -#endif } - void + void lock() { int __e = __gthread_mutex_lock(&_M_mutex); // EINVAL, EAGAIN, EBUSY, EINVAL, EDEADLK(may) - if ( __e) + if (__e) __throw_system_error(__e); } - - bool + + bool try_lock() { int __e = __gthread_mutex_trylock(&_M_mutex); // EINVAL, EAGAIN, EBUSY - if ( __e) + if (__e) __throw_system_error(__e); else return true; } - void + void unlock() { int __e = __gthread_mutex_unlock(&_M_mutex); // EINVAL, EAGAIN, EPERM - if ( __e) + if (__e) __throw_system_error(__e); } - native_handle_type + native_handle_type native_handle() { return _M_mutex; } @@ -121,53 +119,51 @@ namespace std typedef __gthread_recursive_mutex_t native_handle_type; recursive_mutex() - { + { #if defined __GTHREAD_RECURSIVE_MUTEX_INIT native_handle_type __tmp = __GTHREAD_RECURSIVE_MUTEX_INIT; _M_mutex = __tmp; #else - int __e = __GTHREAD_RECURSIVE_MUTEX_INIT_FUNCTION(&_M_mutex); + __GTHREAD_RECURSIVE_MUTEX_INIT_FUNCTION(&_M_mutex); +#endif // EAGAIN, ENOMEM, EPERM, EBUSY(may), EINVAL(may) - if ( __e) - __throw_system_error(__e); -#endif } - void + void lock() - { + { int __e = __gthread_recursive_mutex_lock(&_M_mutex); // EINVAL, EAGAIN, EBUSY, EINVAL, EDEADLK(may) - if ( __e) + if (__e) __throw_system_error(__e); } - - bool + + bool try_lock() { int __e = __gthread_recursive_mutex_trylock(&_M_mutex); // EINVAL, EAGAIN, EBUSY - if ( __e) + if (__e) __throw_system_error(__e); else return true; } - void + void unlock() - { + { int __e = __gthread_recursive_mutex_unlock(&_M_mutex); // EINVAL, EAGAIN, EBUSY - if ( __e) + if (__e) __throw_system_error(__e); } - native_handle_type + native_handle_type native_handle() { return _M_mutex; } private: @@ -191,22 +187,22 @@ namespace std /// and manage it. struct adopt_lock_t { }; - extern const defer_lock_t defer_lock; - extern const try_to_lock_t try_to_lock; - extern const adopt_lock_t adopt_lock; + extern const defer_lock_t defer_lock; + extern const try_to_lock_t try_to_lock; + extern const adopt_lock_t adopt_lock; /// Thrown to indicate errors with lock operations. class lock_error : public exception { public: - virtual const char* + virtual const char* what() const throw(); }; - + /// @brief Scoped lock idiom. // Acquire the mutex here with a constructor call, then release with // the destructor call in accordance with RAII style. - template<typename _Mutex> + template<typename _Mutex> class lock_guard { public: @@ -228,7 +224,7 @@ namespace std }; /// unique_lock - template<typename _Mutex> + template<typename _Mutex> class unique_lock { public: @@ -237,18 +233,18 @@ namespace std unique_lock() : _M_device(NULL), _M_owns(false) { } explicit unique_lock(mutex_type& __m) : _M_device(&__m) - { - lock(); + { + lock(); _M_owns = true; } - - unique_lock(mutex_type& __m, defer_lock_t) + + unique_lock(mutex_type& __m, defer_lock_t) : _M_device(&__m), _M_owns(false) { } - unique_lock(mutex_type& __m, try_to_lock_t) + unique_lock(mutex_type& __m, try_to_lock_t) : _M_device(&__m), _M_owns(_M_device->try_lock()) { } - unique_lock(mutex_type& __m, adopt_lock_t) + unique_lock(mutex_type& __m, adopt_lock_t) : _M_device(&__m), _M_owns(true) { // XXX calling thread owns mutex @@ -257,7 +253,7 @@ namespace std unique_lock(mutex_type& __m, const system_time& abs_time); template<typename _Duration> - unique_lock(mutex_type& __m, const _Duration& rel_time); + unique_lock(mutex_type& __m, const _Duration& rel_time); ~unique_lock() { @@ -270,60 +266,60 @@ namespace std unique_lock& operator=(unique_lock&&); - void + void lock() - { + { if (_M_device && !_M_owns) - _M_device->lock(); + _M_device->lock(); else throw lock_error(); } - bool + bool try_lock() - { + { bool __ret = false; if (_M_device && !_M_owns) - __ret = _M_device->try_lock(); + __ret = _M_device->try_lock(); else throw lock_error(); return __ret; } - void + void unlock() - { + { if (_M_device && _M_owns) - _M_device->unlock(); + _M_device->unlock(); else throw lock_error(); } template<typename _Duration> - bool timed_lock(const _Duration& rel_time); + bool timed_lock(const _Duration& rel_time); - bool + bool timed_lock(const system_time& abs_time); - void + void swap(unique_lock&& __u); - mutex_type* - release() - { - mutex_type* __ret = _M_device; + mutex_type* + release() + { + mutex_type* __ret = _M_device; _M_device = NULL; _M_owns = false; return __ret; } - bool + bool owns_lock() const { return _M_owns; } operator bool () const { return owns_lock(); } - mutex_type* + mutex_type* mutex() const { return _M_device; } @@ -331,36 +327,40 @@ namespace std unique_lock(unique_lock const&); unique_lock& operator=(unique_lock const&); - mutex_type* _M_device; - bool _M_owns; // XXX use atomic_bool + mutex_type* _M_device; + bool _M_owns; // XXX use atomic_bool }; template<typename _Mutex> - void + void swap(unique_lock<_Mutex>& __x, unique_lock<_Mutex>& __y); template<typename _Mutex> - void + void swap(unique_lock<_Mutex>&& __x, unique_lock<_Mutex>& __y); template<typename _Mutex> - void + void swap(unique_lock<_Mutex>& __x, unique_lock<_Mutex>&& __y); - template<typename _L1, typename _L2, typename ..._L3> - int + template<typename _L1, typename _L2, typename ..._L3> + int try_lock(_L1&, _L2&, _L3&...); - template<typename _L1, typename _L2, typename ..._L3> - void + template<typename _L1, typename _L2, typename ..._L3> + void lock(_L1&, _L2&, _L3&...); /// once_flag - struct once_flag + struct once_flag { typedef __gthread_once_t __native_type; - once_flag() : _M_once(__GTHREAD_ONCE_INIT) { } + once_flag() + { + __native_type __tmp = __GTHREAD_ONCE_INIT; + _M_once = __tmp; + } __native_type& _M_get() { return _M_once; } @@ -372,11 +372,11 @@ namespace std }; template<typename _Callable, typename... _Args> - void + void call_once(once_flag& __once, _Callable __f, _Args&&... __args) { - int __e = __gthread_once(&(__once._M_get()), __f(__args...)); - if ( __e) + int __e = __gthread_once(&(__once._M_get()), __f(__args...)); + if (__e) __throw_system_error(__e); } } |