aboutsummaryrefslogtreecommitdiff
path: root/lib/sanitizer_common/tests/sanitizer_allocator_testlib.cc
blob: d2920d8f7f67c60197f286ea0f595fc9d3a586db (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
//===-- sanitizer_allocator_testlib.cc ------------------------------------===//
//
//                     The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
// Malloc replacement library based on CombinedAllocator.
// The primary purpose of this file is an end-to-end integration test
// for CombinedAllocator.
//===----------------------------------------------------------------------===//
/* Usage:
clang++ -std=c++11 -fno-exceptions  -g -fPIC -I. -I../include -Isanitizer \
 sanitizer_common/tests/sanitizer_allocator_testlib.cc \
 $(\ls sanitizer_common/sanitizer_*.cc | grep -v sanitizer_common_nolibc.cc) \
  sanitizer_common/sanitizer_linux_x86_64.S \
 -shared -lpthread -o testmalloc.so
LD_PRELOAD=`pwd`/testmalloc.so /your/app
*/
#include "sanitizer_common/sanitizer_allocator.h"
#include "sanitizer_common/sanitizer_common.h"
#include <stddef.h>
#include <stdio.h>
#include <unistd.h>
#include <string.h>
#include <pthread.h>

#ifndef SANITIZER_MALLOC_HOOK
# define SANITIZER_MALLOC_HOOK(p, s)
#endif

#ifndef SANITIZER_FREE_HOOK
# define SANITIZER_FREE_HOOK(p)
#endif

static const uptr kAllocatorSpace = 0x600000000000ULL;
static const uptr kAllocatorSize  =  0x10000000000ULL;  // 1T.

struct __AP64 {
  static const uptr kSpaceBeg = ~(uptr)0;
  static const uptr kSpaceSize = kAllocatorSize;
  static const uptr kMetadataSize = 0;
  typedef CompactSizeClassMap SizeClassMap;
  typedef NoOpMapUnmapCallback MapUnmapCallback;
  static const uptr kFlags =
      SizeClassAllocator64FlagMasks::kRandomShuffleChunks;
};

namespace {

typedef SizeClassAllocator64<__AP64> PrimaryAllocator;
typedef SizeClassAllocatorLocalCache<PrimaryAllocator> AllocatorCache;
typedef LargeMmapAllocator<> SecondaryAllocator;
typedef CombinedAllocator<PrimaryAllocator, AllocatorCache,
          SecondaryAllocator> Allocator;

static Allocator allocator;
static bool global_inited;
static THREADLOCAL AllocatorCache cache;
static THREADLOCAL bool thread_inited;
static pthread_key_t pkey;

static void thread_dtor(void *v) {
  if ((uptr)v != 3) {
    pthread_setspecific(pkey, (void*)((uptr)v + 1));
    return;
  }
  allocator.SwallowCache(&cache);
}

static size_t GetRss() {
  if (FILE *f = fopen("/proc/self/statm", "r")) {
    size_t size = 0, rss = 0;
    fscanf(f, "%zd %zd", &size, &rss);
    fclose(f);
    return rss << 12;  // rss is in pages.
  }
  return 0;
}

struct AtExit {
  ~AtExit() {
    allocator.PrintStats();
    Printf("RSS: %zdM\n", GetRss() >> 20);
  }
};

static AtExit at_exit;

static void NOINLINE thread_init() {
  if (!global_inited) {
    global_inited = true;
    allocator.Init(false /*may_return_null*/);
    pthread_key_create(&pkey, thread_dtor);
  }
  thread_inited = true;
  pthread_setspecific(pkey, (void*)1);
  cache.Init(nullptr);
}
}  // namespace

extern "C" {
void *malloc(size_t size) {
  if (UNLIKELY(!thread_inited))
    thread_init();
  void *p = allocator.Allocate(&cache, size, 8);
  SANITIZER_MALLOC_HOOK(p, size);
  return p;
}

void free(void *p) {
  if (UNLIKELY(!thread_inited))
    thread_init();
  SANITIZER_FREE_HOOK(p);
  allocator.Deallocate(&cache, p);
}

void *calloc(size_t nmemb, size_t size) {
  if (UNLIKELY(!thread_inited))
    thread_init();
  size *= nmemb;
  void *p = allocator.Allocate(&cache, size, 8, false);
  memset(p, 0, size);
  SANITIZER_MALLOC_HOOK(p, size);
  return p;
}

void *realloc(void *p, size_t size) {
  if (UNLIKELY(!thread_inited))
    thread_init();
  if (p) {
    SANITIZER_FREE_HOOK(p);
  }
  p = allocator.Reallocate(&cache, p, size, 8);
  if (p) {
    SANITIZER_MALLOC_HOOK(p, size);
  }
  return p;
}

#if SANITIZER_INTERCEPT_MEMALIGN
void *memalign(size_t alignment, size_t size) {
  if (UNLIKELY(!thread_inited))
    thread_init();
  void *p = allocator.Allocate(&cache, size, alignment);
  SANITIZER_MALLOC_HOOK(p, size);
  return p;
}
#endif // SANITIZER_INTERCEPT_MEMALIGN

int posix_memalign(void **memptr, size_t alignment, size_t size) {
  if (UNLIKELY(!thread_inited))
    thread_init();
  *memptr = allocator.Allocate(&cache, size, alignment);
  SANITIZER_MALLOC_HOOK(*memptr, size);
  return 0;
}

void *valloc(size_t size) {
  if (UNLIKELY(!thread_inited))
    thread_init();
  if (size == 0)
    size = GetPageSizeCached();
  void *p = allocator.Allocate(&cache, size, GetPageSizeCached());
  SANITIZER_MALLOC_HOOK(p, size);
  return p;
}

#if SANITIZER_INTERCEPT_CFREE
void cfree(void *p) ALIAS("free");
#endif // SANITIZER_INTERCEPT_CFREE
#if SANITIZER_INTERCEPT_PVALLOC
void *pvalloc(size_t size) ALIAS("valloc");
#endif // SANITIZER_INTERCEPT_PVALLOC
#if SANITIZER_INTERCEPT_MEMALIGN
void *__libc_memalign(size_t alignment, size_t size) ALIAS("memalign");
#endif // SANITIZER_INTERCEPT_MEMALIGN

void malloc_usable_size() {
}

#if SANITIZER_INTERCEPT_MALLOPT_AND_MALLINFO
void mallinfo() {
}

void mallopt() {
}
#endif // SANITIZER_INTERCEPT_MALLOPT_AND_MALLINFO
}  // extern "C"

namespace std {
  struct nothrow_t;
}

void *operator new(size_t size) ALIAS("malloc");
void *operator new[](size_t size) ALIAS("malloc");
void *operator new(size_t size, std::nothrow_t const&) ALIAS("malloc");
void *operator new[](size_t size, std::nothrow_t const&) ALIAS("malloc");
void operator delete(void *ptr) throw() ALIAS("free");
void operator delete[](void *ptr) throw() ALIAS("free");
void operator delete(void *ptr, std::nothrow_t const&) ALIAS("free");
void operator delete[](void *ptr, std::nothrow_t const&) ALIAS("free");