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 #include <MTConfig.h> 23 #include <MTAppInterop.h> 24 #include <MTTools.h> 25 26 #include <stdio.h> 27 28 #if MT_SSE_INTRINSICS_SUPPORTED 29 #include <xmmintrin.h> 30 #else 31 #include <malloc.h> 32 #endif 33 34 35 36 37 #if MT_PLATFORM_WINDOWS 38 39 inline void ThrowException() 40 { 41 __debugbreak(); 42 } 43 44 #elif MT_PLATFORM_POSIX || MT_PLATFORM_OSX 45 46 #define _DARWIN_C_SOURCE 47 #include<signal.h> 48 inline void ThrowException() 49 { 50 raise(SIGTRAP); 51 // force access violation error 52 char* pBadAddr = (char*)0x0; 53 *pBadAddr = 0; 54 } 55 56 #else 57 58 #error Platform is not supported! 59 60 #endif 61 62 63 64 namespace MT 65 { 66 67 void* Memory::Alloc(size_t size, size_t align) 68 { 69 void* p = nullptr; 70 #if MT_SSE_INTRINSICS_SUPPORTED 71 p = _mm_malloc(size, align); 72 #else 73 p = memalign(size, align); 74 #endif 75 MT_ASSERT(p, "Can't allocate memory"); 76 return p; 77 } 78 79 void Memory::Free(void* p) 80 { 81 #if MT_SSE_INTRINSICS_SUPPORTED 82 _mm_free(p); 83 #else 84 free(p); 85 #endif 86 } 87 88 Memory::StackDesc Memory::AllocStack(size_t size) 89 { 90 StackDesc desc; 91 92 #if MT_PLATFORM_WINDOWS 93 94 MW_SYSTEM_INFO systemInfo; 95 GetSystemInfo(&systemInfo); 96 97 int pageSize = (int)systemInfo.dwPageSize; 98 int pagesCount = (int)size / pageSize; 99 100 //need additional page for stack guard 101 if ((size % pageSize) > 0) 102 { 103 pagesCount++; 104 } 105 106 //protected guard page 107 pagesCount++; 108 109 desc.stackMemoryBytesCount = pagesCount * pageSize; 110 desc.stackMemory = (char*)VirtualAlloc(NULL, desc.stackMemoryBytesCount, MW_MEM_COMMIT, MW_PAGE_READWRITE); 111 MT_ASSERT(desc.stackMemory != NULL, "Can't allocate memory"); 112 113 desc.stackBottom = desc.stackMemory + pageSize; 114 desc.stackTop = desc.stackMemory + desc.stackMemoryBytesCount; 115 116 MW_DWORD oldProtect = 0; 117 MW_BOOL res = VirtualProtect(desc.stackMemory, pageSize, MW_PAGE_NOACCESS, &oldProtect); 118 MT_USED_IN_ASSERT(res); 119 MT_ASSERT(res != 0, "Can't protect memory"); 120 121 #elif MT_PLATFORM_POSIX || MT_PLATFORM_OSX 122 123 int pageSize = sysconf(_SC_PAGE_SIZE); 124 int pagesCount = size / pageSize; 125 126 //need additional page for stack tail 127 if ((size % pageSize) > 0) 128 { 129 pagesCount++; 130 } 131 132 //protected guard page 133 pagesCount++; 134 135 desc.stackMemoryBytesCount = pagesCount * pageSize; 136 desc.stackMemory = (char*)mmap(NULL, desc.stackMemoryBytesCount, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS | MAP_STACK, -1, 0); 137 138 MT_ASSERT((void *)desc.stackMemory != (void *)-1, "Can't allocate memory"); 139 140 desc.stackBottom = desc.stackMemory + pageSize; 141 desc.stackTop = desc.stackMemory + desc.stackMemoryBytesCount; 142 143 int res = mprotect(desc.stackMemory, pageSize, PROT_NONE); 144 MT_USED_IN_ASSERT(res); 145 MT_ASSERT(res == 0, "Can't protect memory"); 146 #else 147 #error Platform is not supported! 148 #endif 149 150 return desc; 151 } 152 153 void Memory::FreeStack(const Memory::StackDesc & desc) 154 { 155 #if MT_PLATFORM_WINDOWS 156 157 int res = VirtualFree(desc.stackMemory, 0, MW_MEM_RELEASE); 158 MT_USED_IN_ASSERT(res); 159 MT_ASSERT(res != 0, "Can't free memory"); 160 161 #elif MT_PLATFORM_POSIX || MT_PLATFORM_OSX 162 163 int res = munmap(desc.stackMemory, desc.stackMemoryBytesCount); 164 MT_USED_IN_ASSERT(res); 165 MT_ASSERT(res == 0, "Can't free memory"); 166 #else 167 #error Platform is not supported! 168 #endif 169 } 170 171 void Diagnostic::ReportAssert(const char* condition, const char* description, const char* sourceFile, int sourceLine) 172 { 173 printf("Assertion failed : %s. File %s, line %d. Condition %s\n", description, sourceFile, sourceLine, condition); 174 ThrowException(); 175 } 176 177 178 179 180 } 181