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 #if SANITIZER_MAC || SANITIZER_ANDROID
27 #define __libc_malloc REAL(malloc)
28 #define __libc_free REAL(free)
29 #endif
30
31 #define OPERATOR_NEW_BODY(mangled_name) \
32 if (cur_thread()->in_symbolizer) \
33 return __libc_malloc(size); \
34 void *p = 0; \
35 { \
36 SCOPED_INTERCEPTOR_RAW(mangled_name, size); \
37 p = user_alloc(thr, pc, size); \
38 } \
39 invoke_malloc_hook(p, size); \
40 return p;
41
42 SANITIZER_INTERFACE_ATTRIBUTE
43 void *operator new(__sanitizer::uptr size);
operator new(__sanitizer::uptr size)44 void *operator new(__sanitizer::uptr size) {
45 OPERATOR_NEW_BODY(_Znwm);
46 }
47
48 SANITIZER_INTERFACE_ATTRIBUTE
49 void *operator new[](__sanitizer::uptr size);
operator new[](__sanitizer::uptr size)50 void *operator new[](__sanitizer::uptr size) {
51 OPERATOR_NEW_BODY(_Znam);
52 }
53
54 SANITIZER_INTERFACE_ATTRIBUTE
55 void *operator new(__sanitizer::uptr size, std::nothrow_t const&);
operator new(__sanitizer::uptr size,std::nothrow_t const &)56 void *operator new(__sanitizer::uptr size, std::nothrow_t const&) {
57 OPERATOR_NEW_BODY(_ZnwmRKSt9nothrow_t);
58 }
59
60 SANITIZER_INTERFACE_ATTRIBUTE
61 void *operator new[](__sanitizer::uptr size, std::nothrow_t const&);
operator new[](__sanitizer::uptr size,std::nothrow_t const &)62 void *operator new[](__sanitizer::uptr size, std::nothrow_t const&) {
63 OPERATOR_NEW_BODY(_ZnamRKSt9nothrow_t);
64 }
65
66 #define OPERATOR_DELETE_BODY(mangled_name) \
67 if (ptr == 0) return; \
68 if (cur_thread()->in_symbolizer) \
69 return __libc_free(ptr); \
70 invoke_free_hook(ptr); \
71 SCOPED_INTERCEPTOR_RAW(mangled_name, ptr); \
72 user_free(thr, pc, ptr);
73
74 SANITIZER_INTERFACE_ATTRIBUTE
75 void operator delete(void *ptr) NOEXCEPT;
operator delete(void * ptr)76 void operator delete(void *ptr) NOEXCEPT {
77 OPERATOR_DELETE_BODY(_ZdlPv);
78 }
79
80 SANITIZER_INTERFACE_ATTRIBUTE
81 void operator delete[](void *ptr) NOEXCEPT;
operator delete[](void * ptr)82 void operator delete[](void *ptr) NOEXCEPT {
83 OPERATOR_DELETE_BODY(_ZdaPv);
84 }
85
86 SANITIZER_INTERFACE_ATTRIBUTE
87 void operator delete(void *ptr, std::nothrow_t const&);
operator delete(void * ptr,std::nothrow_t const &)88 void operator delete(void *ptr, std::nothrow_t const&) {
89 OPERATOR_DELETE_BODY(_ZdlPvRKSt9nothrow_t);
90 }
91
92 SANITIZER_INTERFACE_ATTRIBUTE
93 void operator delete[](void *ptr, std::nothrow_t const&);
operator delete[](void * ptr,std::nothrow_t const &)94 void operator delete[](void *ptr, std::nothrow_t const&) {
95 OPERATOR_DELETE_BODY(_ZdaPvRKSt9nothrow_t);
96 }
97