1 //===-- tsan_new_delete.cc ----------------------------------------------===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 // 10 // This file is a part of ThreadSanitizer (TSan), a race detector. 11 // 12 // Interceptors for operators new and delete. 13 //===----------------------------------------------------------------------===// 14 #include "interception/interception.h" 15 #include "sanitizer_common/sanitizer_internal_defs.h" 16 #include "tsan_interceptors.h" 17 18 using namespace __tsan; // NOLINT 19 20 namespace std { 21 struct nothrow_t {}; 22 } // namespace std 23 24 DECLARE_REAL(void *, malloc, uptr size) 25 DECLARE_REAL(void, free, void *ptr) 26 27 #define OPERATOR_NEW_BODY(mangled_name) \ 28 if (cur_thread()->in_symbolizer) \ 29 return InternalAlloc(size); \ 30 void *p = 0; \ 31 { \ 32 SCOPED_INTERCEPTOR_RAW(mangled_name, size); \ 33 p = user_alloc(thr, pc, size); \ 34 } \ 35 invoke_malloc_hook(p, size); \ 36 return p; 37 38 SANITIZER_INTERFACE_ATTRIBUTE 39 void *operator new(__sanitizer::uptr size); 40 void *operator new(__sanitizer::uptr size) { 41 OPERATOR_NEW_BODY(_Znwm); 42 } 43 44 SANITIZER_INTERFACE_ATTRIBUTE 45 void *operator new[](__sanitizer::uptr size); 46 void *operator new[](__sanitizer::uptr size) { 47 OPERATOR_NEW_BODY(_Znam); 48 } 49 50 SANITIZER_INTERFACE_ATTRIBUTE 51 void *operator new(__sanitizer::uptr size, std::nothrow_t const&); 52 void *operator new(__sanitizer::uptr size, std::nothrow_t const&) { 53 OPERATOR_NEW_BODY(_ZnwmRKSt9nothrow_t); 54 } 55 56 SANITIZER_INTERFACE_ATTRIBUTE 57 void *operator new[](__sanitizer::uptr size, std::nothrow_t const&); 58 void *operator new[](__sanitizer::uptr size, std::nothrow_t const&) { 59 OPERATOR_NEW_BODY(_ZnamRKSt9nothrow_t); 60 } 61 62 #define OPERATOR_DELETE_BODY(mangled_name) \ 63 if (ptr == 0) return; \ 64 if (cur_thread()->in_symbolizer) \ 65 return InternalFree(ptr); \ 66 invoke_free_hook(ptr); \ 67 SCOPED_INTERCEPTOR_RAW(mangled_name, ptr); \ 68 user_free(thr, pc, ptr); 69 70 SANITIZER_INTERFACE_ATTRIBUTE 71 void operator delete(void *ptr) NOEXCEPT; 72 void operator delete(void *ptr) NOEXCEPT { 73 OPERATOR_DELETE_BODY(_ZdlPv); 74 } 75 76 SANITIZER_INTERFACE_ATTRIBUTE 77 void operator delete[](void *ptr) NOEXCEPT; 78 void operator delete[](void *ptr) NOEXCEPT { 79 OPERATOR_DELETE_BODY(_ZdaPv); 80 } 81 82 SANITIZER_INTERFACE_ATTRIBUTE 83 void operator delete(void *ptr, std::nothrow_t const&); 84 void operator delete(void *ptr, std::nothrow_t const&) { 85 OPERATOR_DELETE_BODY(_ZdlPvRKSt9nothrow_t); 86 } 87 88 SANITIZER_INTERFACE_ATTRIBUTE 89 void operator delete[](void *ptr, std::nothrow_t const&); 90 void operator delete[](void *ptr, std::nothrow_t const&) { 91 OPERATOR_DELETE_BODY(_ZdaPvRKSt9nothrow_t); 92 } 93
