diff options
Diffstat (limited to 'gcc-4.4.3/libstdc++-v3/include/bits/atomic_0.h')
| -rw-r--r-- | gcc-4.4.3/libstdc++-v3/include/bits/atomic_0.h | 464 |
1 files changed, 0 insertions, 464 deletions
diff --git a/gcc-4.4.3/libstdc++-v3/include/bits/atomic_0.h b/gcc-4.4.3/libstdc++-v3/include/bits/atomic_0.h deleted file mode 100644 index 0caffaf1e..000000000 --- a/gcc-4.4.3/libstdc++-v3/include/bits/atomic_0.h +++ /dev/null @@ -1,464 +0,0 @@ -// -*- C++ -*- header. - -// Copyright (C) 2008, 2009 -// 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/atomic_0.h - * This is an internal header file, included by other library headers. - * You should not attempt to use it directly. - */ - -#ifndef _GLIBCXX_ATOMIC_0_H -#define _GLIBCXX_ATOMIC_0_H 1 - -#pragma GCC system_header - -// _GLIBCXX_BEGIN_NAMESPACE(std) - - // 0 == __atomic0 == Never lock-free -namespace __atomic0 -{ - struct atomic_flag; - - // Implementation specific defines. -#define _ATOMIC_LOAD_(__a, __x) \ - ({ volatile __typeof__ _ATOMIC_MEMBER_* __p = &_ATOMIC_MEMBER_; \ - volatile __atomic_flag_base* __g = __atomic_flag_for_address(__p); \ - __atomic_flag_wait_explicit(__g, __x); \ - __typeof__ _ATOMIC_MEMBER_ __r = *__p; \ - atomic_flag_clear_explicit(__g, __x); \ - __r; }) - -#define _ATOMIC_STORE_(__a, __m, __x) \ - ({ volatile __typeof__ _ATOMIC_MEMBER_* __p = &_ATOMIC_MEMBER_; \ - __typeof__(__m) __v = (__m); \ - volatile __atomic_flag_base* __g = __atomic_flag_for_address(__p); \ - __atomic_flag_wait_explicit(__g, __x); \ - *__p = __v; \ - atomic_flag_clear_explicit(__g, __x); \ - __v; }) - -#define _ATOMIC_MODIFY_(__a, __o, __m, __x) \ - ({ volatile __typeof__ _ATOMIC_MEMBER_* __p = &_ATOMIC_MEMBER_; \ - __typeof__(__m) __v = (__m); \ - volatile __atomic_flag_base* __g = __atomic_flag_for_address(__p); \ - __atomic_flag_wait_explicit(__g, __x); \ - __typeof__ _ATOMIC_MEMBER_ __r = *__p; \ - *__p __o __v; \ - atomic_flag_clear_explicit(__g, __x); \ - __r; }) - -#define _ATOMIC_CMPEXCHNG_(__a, __e, __m, __x) \ - ({ volatile __typeof__ _ATOMIC_MEMBER_* __p = &_ATOMIC_MEMBER_; \ - __typeof__(__e) __q = (__e); \ - __typeof__(__m) __v = (__m); \ - bool __r; \ - volatile __atomic_flag_base* __g = __atomic_flag_for_address(__p); \ - __atomic_flag_wait_explicit(__g, __x); \ - __typeof__ _ATOMIC_MEMBER_ __t__ = *__p; \ - if (__t__ == *__q) { *__p = __v; __r = true; } \ - else { *__q = __t__; __r = false; } \ - atomic_flag_clear_explicit(__g, __x); \ - __r; }) - - /// atomic_flag - struct atomic_flag : public __atomic_flag_base - { - atomic_flag() = default; - ~atomic_flag() = default; - atomic_flag(const atomic_flag&) = delete; - atomic_flag& operator=(const atomic_flag&) = delete; - - // Conversion to ATOMIC_FLAG_INIT. - atomic_flag(bool __i): __atomic_flag_base({ __i }) { } - - bool - test_and_set(memory_order __m = memory_order_seq_cst) volatile; - - void - clear(memory_order __m = memory_order_seq_cst) volatile; - }; - - /// 29.4.2, address types - struct atomic_address - { - private: - void* _M_i; - - public: - atomic_address() = default; - ~atomic_address() = default; - atomic_address(const atomic_address&) = delete; - atomic_address& operator=(const atomic_address&) = delete; - - atomic_address(void* __v) { _M_i = __v; } - - bool - is_lock_free() const volatile - { return false; } - - void - store(void* __v, memory_order __m = memory_order_seq_cst) volatile - { - __glibcxx_assert(__m != memory_order_acquire); - __glibcxx_assert(__m != memory_order_acq_rel); - __glibcxx_assert(__m != memory_order_consume); - _ATOMIC_STORE_(this, __v, __m); - } - - void* - load(memory_order __m = memory_order_seq_cst) const volatile - { - __glibcxx_assert(__m != memory_order_release); - __glibcxx_assert(__m != memory_order_acq_rel); - return _ATOMIC_LOAD_(this, __m); - } - - void* - exchange(void* __v, memory_order __m = memory_order_seq_cst) volatile - { return _ATOMIC_MODIFY_(this, =, __v, __m); } - - bool - compare_exchange_weak(void*& __v1, void* __v2, memory_order __m1, - memory_order __m2) volatile - { - __glibcxx_assert(__m2 != memory_order_release); - __glibcxx_assert(__m2 != memory_order_acq_rel); - __glibcxx_assert(__m2 <= __m1); - return _ATOMIC_CMPEXCHNG_(this, &__v1, __v2, __m1); - } - - bool - compare_exchange_weak(void*& __v1, void* __v2, - memory_order __m = memory_order_seq_cst) volatile - { - return compare_exchange_weak(__v1, __v2, __m, - __calculate_memory_order(__m)); - } - - bool - compare_exchange_strong(void*& __v1, void* __v2, memory_order __m1, - memory_order __m2) volatile - { - __glibcxx_assert(__m2 != memory_order_release); - __glibcxx_assert(__m2 != memory_order_acq_rel); - __glibcxx_assert(__m2 <= __m1); - return _ATOMIC_CMPEXCHNG_(this, &__v1, __v2, __m1); - } - - bool - compare_exchange_strong(void*& __v1, void* __v2, - memory_order __m = memory_order_seq_cst) volatile - { - return compare_exchange_strong(__v1, __v2, __m, - __calculate_memory_order(__m)); - } - - void* - fetch_add(ptrdiff_t __d, memory_order __m = memory_order_seq_cst) volatile - { - void* volatile* __p = &(_M_i); - volatile __atomic_flag_base* __g = __atomic_flag_for_address(__p); - __atomic_flag_wait_explicit(__g, __m); - void* __r = *__p; - *__p = (void*)((char*)(*__p) + __d); - atomic_flag_clear_explicit(__g, __m); - return __r; - } - - void* - fetch_sub(ptrdiff_t __d, memory_order __m = memory_order_seq_cst) volatile - { - void* volatile* __p = &(_M_i); - volatile __atomic_flag_base* __g = __atomic_flag_for_address(__p); - __atomic_flag_wait_explicit(__g, __m); - void* __r = *__p; - *__p = (void*)((char*)(*__p) - __d); - atomic_flag_clear_explicit(__g, __m); - return __r; - } - - operator void*() const volatile - { return load(); } - - void* - operator=(void* __v) // XXX volatile - { - store(__v); - return __v; - } - - void* - operator+=(ptrdiff_t __d) volatile - { return fetch_add(__d) + __d; } - - void* - operator-=(ptrdiff_t __d) volatile - { return fetch_sub(__d) - __d; } - }; - - - // 29.3.1 atomic integral types - // For each of the integral types, define atomic_[integral type] struct - // - // atomic_bool bool - // atomic_char char - // atomic_schar signed char - // atomic_uchar unsigned char - // atomic_short short - // atomic_ushort unsigned short - // atomic_int int - // atomic_uint unsigned int - // atomic_long long - // atomic_ulong unsigned long - // atomic_llong long long - // atomic_ullong unsigned long long - // atomic_char16_t char16_t - // atomic_char32_t char32_t - // atomic_wchar_t wchar_t - - // Base type. - // NB: Assuming _ITp is an integral scalar type that is 1, 2, 4, or 8 bytes, - // since that is what GCC built-in functions for atomic memory access work on. - template<typename _ITp> - struct __atomic_base - { - private: - typedef _ITp __integral_type; - - __integral_type _M_i; - - public: - __atomic_base() = default; - ~__atomic_base() = default; - __atomic_base(const __atomic_base&) = delete; - __atomic_base& operator=(const __atomic_base&) = delete; - - // Requires __integral_type convertible to _M_base._M_i. - __atomic_base(__integral_type __i) { _M_i = __i; } - - operator __integral_type() const volatile - { return load(); } - - __integral_type - operator=(__integral_type __i) // XXX volatile - { - store(__i); - return __i; - } - - __integral_type - operator++(int) volatile - { return fetch_add(1); } - - __integral_type - operator--(int) volatile - { return fetch_sub(1); } - - __integral_type - operator++() volatile - { return fetch_add(1) + 1; } - - __integral_type - operator--() volatile - { return fetch_sub(1) - 1; } - - __integral_type - operator+=(__integral_type __i) volatile - { return fetch_add(__i) + __i; } - - __integral_type - operator-=(__integral_type __i) volatile - { return fetch_sub(__i) - __i; } - - __integral_type - operator&=(__integral_type __i) volatile - { return fetch_and(__i) & __i; } - - __integral_type - operator|=(__integral_type __i) volatile - { return fetch_or(__i) | __i; } - - __integral_type - operator^=(__integral_type __i) volatile - { return fetch_xor(__i) ^ __i; } - - bool - is_lock_free() const volatile - { return false; } - - void - store(__integral_type __i, - memory_order __m = memory_order_seq_cst) volatile - { - __glibcxx_assert(__m != memory_order_acquire); - __glibcxx_assert(__m != memory_order_acq_rel); - __glibcxx_assert(__m != memory_order_consume); - _ATOMIC_STORE_(this, __i, __m); - } - - __integral_type - load(memory_order __m = memory_order_seq_cst) const volatile - { - __glibcxx_assert(__m != memory_order_release); - __glibcxx_assert(__m != memory_order_acq_rel); - return _ATOMIC_LOAD_(this, __m); - } - - __integral_type - exchange(__integral_type __i, - memory_order __m = memory_order_seq_cst) volatile - { return _ATOMIC_MODIFY_(this, =, __i, __m); } - - bool - compare_exchange_weak(__integral_type& __i1, __integral_type __i2, - memory_order __m1, memory_order __m2) volatile - { - __glibcxx_assert(__m2 != memory_order_release); - __glibcxx_assert(__m2 != memory_order_acq_rel); - __glibcxx_assert(__m2 <= __m1); - return _ATOMIC_CMPEXCHNG_(this, &__i1, __i2, __m1); - } - - bool - compare_exchange_weak(__integral_type& __i1, __integral_type __i2, - memory_order __m = memory_order_seq_cst) volatile - { - return compare_exchange_weak(__i1, __i2, __m, - __calculate_memory_order(__m)); - } - - bool - compare_exchange_strong(__integral_type& __i1, __integral_type __i2, - memory_order __m1, memory_order __m2) volatile - { - __glibcxx_assert(__m2 != memory_order_release); - __glibcxx_assert(__m2 != memory_order_acq_rel); - __glibcxx_assert(__m2 <= __m1); - return _ATOMIC_CMPEXCHNG_(this, &__i1, __i2, __m1); - } - - bool - compare_exchange_strong(__integral_type& __i1, __integral_type __i2, - memory_order __m = memory_order_seq_cst) volatile - { - return compare_exchange_strong(__i1, __i2, __m, - __calculate_memory_order(__m)); - } - - __integral_type - fetch_add(__integral_type __i, - memory_order __m = memory_order_seq_cst) volatile - { return _ATOMIC_MODIFY_(this, +=, __i, __m); } - - __integral_type - fetch_sub(__integral_type __i, - memory_order __m = memory_order_seq_cst) volatile - { return _ATOMIC_MODIFY_(this, -=, __i, __m); } - - __integral_type - fetch_and(__integral_type __i, - memory_order __m = memory_order_seq_cst) volatile - { return _ATOMIC_MODIFY_(this, &=, __i, __m); } - - __integral_type - fetch_or(__integral_type __i, - memory_order __m = memory_order_seq_cst) volatile - { return _ATOMIC_MODIFY_(this, |=, __i, __m); } - - __integral_type - fetch_xor(__integral_type __i, - memory_order __m = memory_order_seq_cst) volatile - { return _ATOMIC_MODIFY_(this, ^=, __i, __m); } - }; - - - /// atomic_bool - // NB: No operators or fetch-operations for this type. - struct atomic_bool - { - private: - __atomic_base<bool> _M_base; - - public: - atomic_bool() = default; - ~atomic_bool() = default; - atomic_bool(const atomic_bool&) = delete; - atomic_bool& operator=(const atomic_bool&) = delete; - - atomic_bool(bool __i) : _M_base(__i) { } - - bool - operator=(bool __i) // XXX volatile - { return _M_base.operator=(__i); } - - operator bool() const volatile - { return _M_base.load(); } - - bool - is_lock_free() const volatile - { return _M_base.is_lock_free(); } - - void - store(bool __i, memory_order __m = memory_order_seq_cst) volatile - { _M_base.store(__i, __m); } - - bool - load(memory_order __m = memory_order_seq_cst) const volatile - { return _M_base.load(__m); } - - bool - exchange(bool __i, memory_order __m = memory_order_seq_cst) volatile - { return _M_base.exchange(__i, __m); } - - bool - compare_exchange_weak(bool& __i1, bool __i2, memory_order __m1, - memory_order __m2) volatile - { return _M_base.compare_exchange_weak(__i1, __i2, __m1, __m2); } - - bool - compare_exchange_weak(bool& __i1, bool __i2, - memory_order __m = memory_order_seq_cst) volatile - { return _M_base.compare_exchange_weak(__i1, __i2, __m); } - - bool - compare_exchange_strong(bool& __i1, bool __i2, memory_order __m1, - memory_order __m2) volatile - { return _M_base.compare_exchange_strong(__i1, __i2, __m1, __m2); } - - - bool - compare_exchange_strong(bool& __i1, bool __i2, - memory_order __m = memory_order_seq_cst) volatile - { return _M_base.compare_exchange_strong(__i1, __i2, __m); } - }; - -#undef _ATOMIC_LOAD_ -#undef _ATOMIC_STORE_ -#undef _ATOMIC_MODIFY_ -#undef _ATOMIC_CMPEXCHNG_ -} // namespace __atomic0 - -// _GLIBCXX_END_NAMESPACE - -#endif |