1 //===-- tsan_malloc_mac.cpp -----------------------------------------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 //
9 // This file is a part of ThreadSanitizer (TSan), a race detector.
10 //
11 // Mac-specific malloc interception.
12 //===----------------------------------------------------------------------===//
13 
14 #include "sanitizer_common/sanitizer_platform.h"
15 #if SANITIZER_APPLE
16 
17 #include "sanitizer_common/sanitizer_errno.h"
18 #include "tsan_interceptors.h"
19 #include "tsan_stack_trace.h"
20 #include "tsan_mman.h"
21 
22 using namespace __tsan;
23 #define COMMON_MALLOC_ZONE_NAME "tsan"
24 #define COMMON_MALLOC_ENTER()
25 #define COMMON_MALLOC_SANITIZER_INITIALIZED (cur_thread()->is_inited)
26 #define COMMON_MALLOC_FORCE_LOCK()
27 #define COMMON_MALLOC_FORCE_UNLOCK()
28 #define COMMON_MALLOC_MEMALIGN(alignment, size) \
29   void *p =                                     \
30       user_memalign(cur_thread(), StackTrace::GetCurrentPc(), alignment, size)
31 #define COMMON_MALLOC_MALLOC(size)                             \
32   if (in_symbolizer()) return InternalAlloc(size);             \
33   void *p = 0;                                                 \
34   {                                                            \
35     SCOPED_INTERCEPTOR_RAW(malloc, size);                      \
36     p = user_alloc(thr, pc, size);                             \
37   }                                                            \
38   invoke_malloc_hook(p, size)
39 #define COMMON_MALLOC_REALLOC(ptr, size)                              \
40   if (in_symbolizer()) return InternalRealloc(ptr, size);             \
41   if (ptr)                                                            \
42     invoke_free_hook(ptr);                                            \
43   void *p = 0;                                                        \
44   {                                                                   \
45     SCOPED_INTERCEPTOR_RAW(realloc, ptr, size);                       \
46     p = user_realloc(thr, pc, ptr, size);                             \
47   }                                                                   \
48   invoke_malloc_hook(p, size)
49 #define COMMON_MALLOC_CALLOC(count, size)                              \
50   if (in_symbolizer()) return InternalCalloc(count, size);             \
51   void *p = 0;                                                         \
52   {                                                                    \
53     SCOPED_INTERCEPTOR_RAW(calloc, size, count);                       \
54     p = user_calloc(thr, pc, size, count);                             \
55   }                                                                    \
56   invoke_malloc_hook(p, size * count)
57 #define COMMON_MALLOC_POSIX_MEMALIGN(memptr, alignment, size)      \
58   if (in_symbolizer()) {                                           \
59     void *p = InternalAlloc(size, nullptr, alignment);             \
60     if (!p) return errno_ENOMEM;                                   \
61     *memptr = p;                                                   \
62     return 0;                                                      \
63   }                                                                \
64   SCOPED_INTERCEPTOR_RAW(posix_memalign, memptr, alignment, size); \
65   int res = user_posix_memalign(thr, pc, memptr, alignment, size);
66 #define COMMON_MALLOC_VALLOC(size)                            \
67   if (in_symbolizer())                                        \
68     return InternalAlloc(size, nullptr, GetPageSizeCached()); \
69   SCOPED_INTERCEPTOR_RAW(valloc, size);                       \
70   void *p = user_valloc(thr, pc, size)
71 #define COMMON_MALLOC_FREE(ptr)                              \
72   if (in_symbolizer()) return InternalFree(ptr);             \
73   invoke_free_hook(ptr);                                     \
74   SCOPED_INTERCEPTOR_RAW(free, ptr);                         \
75   user_free(thr, pc, ptr)
76 #define COMMON_MALLOC_SIZE(ptr) uptr size = user_alloc_usable_size(ptr);
77 #define COMMON_MALLOC_FILL_STATS(zone, stats)
78 #define COMMON_MALLOC_REPORT_UNKNOWN_REALLOC(ptr, zone_ptr, zone_name) \
79   (void)zone_name; \
80   Report("mz_realloc(%p) -- attempting to realloc unallocated memory.\n", ptr);
81 #define COMMON_MALLOC_NAMESPACE __tsan
82 #define COMMON_MALLOC_HAS_ZONE_ENUMERATOR 0
83 #define COMMON_MALLOC_HAS_EXTRA_INTROSPECTION_INIT 0
84 
85 #include "sanitizer_common/sanitizer_malloc_mac.inc"
86 
87 #endif
88