1 /* ThreadSanitizer 2 * Copyright (c) 2011, Google Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions are met: 6 * 7 * * Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * * Neither the name of Google Inc. nor the names of its 10 * contributors may be used to endorse or promote products derived from 11 * this software without specific prior written permission. 12 * 13 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 14 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 15 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 16 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 17 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 18 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 19 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 20 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 21 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26 #ifndef TS_ATOMIC_H_INCLUDED 27 #define TS_ATOMIC_H_INCLUDED 28 29 #ifdef __cplusplus 30 extern "C" { 31 #endif 32 33 34 // These constants mostly mimic ones from C++0x standard draft. 35 // The most recent version of the draft (as of now) can be found here: 36 // http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2011/n3242.pdf 37 // Check out fresh versions here: 38 // http://www.open-std.org/jtc1/sc22/wg21/docs/papers/ 39 // Refer to sections 1.10 and 29. 40 // 41 // tsan_memory_order_invalid has no meaning other than invalid enum value. 42 // tsan_memory_order_natomic stands for "non atomic" and expresses 43 // as if plain memory access that is not intended to race 44 // with other accesses. 45 typedef enum tsan_memory_order { 46 tsan_memory_order_invalid = 0, 47 tsan_memory_order_natomic = 1 << 0, 48 tsan_memory_order_relaxed = 1 << 1, 49 tsan_memory_order_consume = 1 << 2, 50 tsan_memory_order_acquire = 1 << 3, 51 tsan_memory_order_release = 1 << 4, 52 tsan_memory_order_acq_rel = 1 << 5, 53 tsan_memory_order_seq_cst = 1 << 6 54 } tsan_memory_order; 55 56 57 // These constants express types of atomic memory operations 58 // as defined by C++0x standard draft (section 29). 59 // 60 // tsan_atomic_op_invalid has no meaning other than invalid enum value. 61 // compare_exchange_weak differs from compare_exchange_strong in that 62 // it can fail spuriously. 63 typedef enum tsan_atomic_op { 64 tsan_atomic_op_invalid = 0, 65 tsan_atomic_op_fence = 1 << 0, 66 tsan_atomic_op_load = 1 << 1, 67 tsan_atomic_op_store = 1 << 2, 68 tsan_atomic_op_exchange = 1 << 3, 69 tsan_atomic_op_fetch_add = 1 << 4, 70 tsan_atomic_op_fetch_sub = 1 << 5, 71 tsan_atomic_op_fetch_and = 1 << 6, 72 tsan_atomic_op_fetch_xor = 1 << 7, 73 tsan_atomic_op_fetch_or = 1 << 8, 74 tsan_atomic_op_compare_exchange_weak = 1 << 9, 75 tsan_atomic_op_compare_exchange_strong = 1 << 10 76 } tsan_atomic_op; 77 78 79 #ifdef __cplusplus 80 } 81 #endif 82 83 #endif // #ifndef TS_ATOMIC_H_INCLUDED 84 85 86