| // { dg-do compile { target i?86-*-* x86_64-*-* } } |
| // { dg-options "-std=gnu++0x -g0 -fno-exceptions -fno-asynchronous-unwind-tables" } |
| // { dg-options "-std=gnu++0x -g0 -fno-exceptions -fno-asynchronous-unwind-tables -march=i486" { target ia32 } } |
| // { dg-final { scan-assembler-times "xacquire\|\.byte\[^\n\r]*0xf2" 14 } } |
| // { dg-final { scan-assembler-times "xrelease\|\.byte\[^\n\r]*0xf3" 14 } } |
| |
| // Copyright (C) 2008-2013 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. |
| |
| // You should have received a copy of the GNU General Public License along |
| // with this library; see the file COPYING3. If not see |
| // <http://www.gnu.org/licenses/>. |
| |
| #include <atomic> |
| |
| #define ACQ memory_order_acquire | __memory_order_hle_acquire |
| #define REL memory_order_release | __memory_order_hle_release |
| |
| int main() |
| { |
| unsigned zero, one; |
| using namespace std; |
| atomic_flag af = ATOMIC_FLAG_INIT; |
| |
| if (!af.test_and_set(ACQ)) |
| af.clear(REL); |
| |
| atomic_uint au = ATOMIC_VAR_INIT(0); |
| |
| if (au.exchange(1, ACQ)) |
| au.store(0, REL); |
| |
| if (au.exchange(1, ACQ)) |
| au.exchange(0, REL); |
| |
| zero = 0; |
| one = 1; |
| if (au.compare_exchange_weak(zero, 1, ACQ, memory_order_consume)) |
| au.compare_exchange_weak(one, 0, REL, memory_order_consume); |
| |
| zero = 0; |
| one = 1; |
| if (au.compare_exchange_strong(zero, 1, ACQ, memory_order_consume)) |
| au.compare_exchange_strong(one, 0, REL, memory_order_consume); |
| |
| if (!au.fetch_add(1, ACQ)) |
| au.fetch_add(-1, REL); |
| |
| if (!au.fetch_sub(1, ACQ)) |
| au.fetch_sub(-1, REL); |
| |
| #if 0 /* broken in underlying target */ |
| if (!au.fetch_and(1, ACQ)) |
| au.fetch_and(-1, REL); |
| |
| if (!au.fetch_or(1, ACQ)) |
| au.fetch_or(-1, REL); |
| |
| if (!au.fetch_xor(1, ACQ)) |
| au.fetch_xor(-1, REL); |
| |
| if (!au.fetch_nand(1, ACQ)) |
| au.fetch_nand(-1, REL); |
| #endif |
| |
| volatile atomic_flag vaf = ATOMIC_FLAG_INIT; |
| |
| if (!vaf.test_and_set(ACQ)) |
| vaf.clear(REL); |
| |
| volatile atomic_uint vau = ATOMIC_VAR_INIT(0); |
| |
| if (!vau.exchange(1, ACQ)) |
| vau.store(0, REL); |
| |
| if (!vau.exchange(1, ACQ)) |
| vau.exchange(0, REL); |
| |
| zero = 0; |
| one = 1; |
| if (vau.compare_exchange_weak(zero, 1, ACQ, memory_order_consume)) |
| vau.compare_exchange_weak(one, 0, REL, memory_order_consume); |
| |
| zero = 0; |
| one = 1; |
| if (vau.compare_exchange_strong(zero, 1, ACQ, memory_order_consume)) |
| vau.compare_exchange_strong(one, 0, REL, memory_order_consume); |
| |
| if (!vau.fetch_add(1, ACQ)) |
| vau.fetch_add(-1, REL); |
| |
| if (!vau.fetch_sub(1, ACQ)) |
| vau.fetch_sub(-1, REL); |
| |
| #if 0 /* broken in underlying target */ |
| |
| if (!vau.fetch_and(1, ACQ)) |
| vau.fetch_and(-1, REL); |
| |
| if (!vau.fetch_or(1, ACQ)) |
| vau.fetch_or(-1, REL); |
| |
| if (!vau.fetch_xor(1, ACQ)) |
| vau.fetch_xor(-1, REL); |
| |
| if (!vau.fetch_nand(1, ACQ)) |
| vau.fetch_nand(-1, REL); |
| #endif |
| |
| return 0; |
| } |