1 // The MIT License (MIT) 2 // 3 // Copyright (c) 2015 Sergey Makeev, Vadim Slyusarev 4 // 5 // Permission is hereby granted, free of charge, to any person obtaining a copy 6 // of this software and associated documentation files (the "Software"), to deal 7 // in the Software without restriction, including without limitation the rights 8 // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 9 // copies of the Software, and to permit persons to whom the Software is 10 // furnished to do so, subject to the following conditions: 11 // 12 // The above copyright notice and this permission notice shall be included in 13 // all copies or substantial portions of the Software. 14 // 15 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 16 // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 17 // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 18 // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 19 // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 20 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 21 // THE SOFTWARE. 22 23 #pragma once 24 25 26 // Target Platform 27 //////////////////////////////////////////////////////////////////////// 28 #if _WIN32 29 30 #define MT_PLATFORM_WINDOWS (1) 31 32 #elif __APPLE_CC__ 33 34 #define MT_PLATFORM_OSX (1) 35 36 #else 37 38 #define MT_PLATFORM_POSIX (1) 39 40 #endif 41 42 43 // Compiler support for SSE intrinsics 44 //////////////////////////////////////////////////////////////////////// 45 #if (defined(__SSE__) || defined(_M_IX86) || defined(_M_X64)) 46 47 #define MT_SSE_INTRINSICS_SUPPORTED (1) 48 49 #endif 50 51 52 // Compiler support for C++11 53 //////////////////////////////////////////////////////////////////////// 54 55 #if __STDC_VERSION__ >= 201112L 56 57 #define MT_CPP11_SUPPORTED (1) 58 59 #endif 60 61 62 // Compiler family 63 //////////////////////////////////////////////////////////////////////// 64 65 #ifdef __clang__ 66 67 #define MT_CLANG_COMPILER_FAMILY (1) 68 #define MT_GCC_COMPILER_FAMILY (1) 69 70 #elif __GNUC__ 71 72 #define MT_GCC_COMPILER_FAMILY (1) 73 74 #elif defined(_MSC_VER) 75 76 #define MT_MSVC_COMPILER_FAMILY (1) 77 78 #endif 79 80 81 // Debug / Release 82 //////////////////////////////////////////////////////////////////////// 83 84 #ifdef _DEBUG 85 86 #define MT_DEBUG (1) 87 88 #else 89 90 #define MT_RELEASE (1) 91 92 #endif 93 94 95 // x64 / x86 96 //////////////////////////////////////////////////////////////////////// 97 #if defined(_M_X64) 98 99 #define MT_PTR64 (1) 100 101 #endif 102 103 104 105 // 106 // x86-64 CPU has strong memory model, so we don't need to define acquire/release fences here 107 // 108 109 // 110 // Acquire semantics is a property which can only apply to operations which read from shared memory, 111 // whether they are read-modify-write operations or plain loads. The operation is then considered a read-acquire. 112 // Acquire semantics prevent memory reordering of the read-acquire with any read or write operation which follows it in program order. 113 // 114 // Acquire fence is a fence which does not permit subsequent memory operations to be advanced before it. 115 // 116 117 #if MT_MSVC_COMPILER_FAMILY 118 // MSVC compiler barrier 119 #define mt_acquire_fence() _ReadWriteBarrier() 120 #elif MT_GCC_COMPILER_FAMILY 121 // GCC compiler barrier 122 #define mt_acquire_fence() asm volatile("" ::: "memory") 123 #else 124 #error Platform is not supported! 125 #endif 126 127 128 129 // 130 // Release semantics is a property which can only apply to operations which write to shared memory, 131 // whether they are read-modify-write operations or plain stores. The operation is then considered a write-release. 132 // Release semantics prevent memory reordering of the write-release with any read or write operation which precedes it in program order. 133 // 134 // Release fence is a fence which does not permit preceding memory operations to be delayed past it. 135 // 136 137 #if MT_MSVC_COMPILER_FAMILY 138 // MSVC compiler barrier 139 #define mt_release_fence() _ReadWriteBarrier() 140 #elif MT_GCC_COMPILER_FAMILY 141 // GCC compiler barrier 142 #define mt_release_fence() asm volatile("" ::: "memory") 143 #else 144 #error Platform is not supported! 145 #endif 146 147