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