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
|
/*
* Copyright (C) 2020 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <malloc.h>
#include <unistd.h>
#include "perfetto/base/logging.h"
#include "perfetto/heap_profile.h"
#include "src/profiling/memory/wrap_allocators.h"
namespace {
// AHeapProfile_registerHeap is guaranteed to be safe to call from global
// constructors.
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wglobal-constructors"
uint32_t g_heap_id = AHeapProfile_registerHeap(AHeapInfo_create("libc.malloc"));
#pragma GCC diagnostic pop
bool IsPowerOfTwo(size_t v) {
return (v != 0 && ((v & (v - 1)) == 0));
}
} // namespace
extern "C" {
// These are exported by GLibc to be used by functions overwriting malloc
// to call back to the real implementation.
extern void* __libc_malloc(size_t);
extern void __libc_free(void*);
extern void* __libc_calloc(size_t, size_t);
extern void* __libc_realloc(void*, size_t);
extern void* __libc_memalign(size_t, size_t);
extern void* __libc_pvalloc(size_t);
extern void* __libc_valloc(size_t);
extern void* __libc_reallocarray(void*, size_t, size_t);
#pragma GCC visibility push(default)
void* malloc(size_t size) {
return perfetto::profiling::wrap_malloc(g_heap_id, __libc_malloc, size);
}
void free(void* ptr) {
return perfetto::profiling::wrap_free(g_heap_id, __libc_free, ptr);
}
void* calloc(size_t nmemb, size_t size) {
return perfetto::profiling::wrap_calloc(g_heap_id, __libc_calloc, nmemb,
size);
}
void* realloc(void* ptr, size_t size) {
return perfetto::profiling::wrap_realloc(g_heap_id, __libc_realloc, ptr,
size);
}
int posix_memalign(void** memptr, size_t alignment, size_t size) {
if (alignment % sizeof(void*) || !IsPowerOfTwo(alignment / sizeof(void*))) {
return EINVAL;
}
void* alloc = perfetto::profiling::wrap_memalign(g_heap_id, __libc_memalign,
alignment, size);
if (!alloc) {
return ENOMEM;
}
*memptr = alloc;
return 0;
}
void* aligned_alloc(size_t alignment, size_t size) {
return perfetto::profiling::wrap_memalign(g_heap_id, __libc_memalign,
alignment, size);
}
void* memalign(size_t alignment, size_t size) {
return perfetto::profiling::wrap_memalign(g_heap_id, __libc_memalign,
alignment, size);
}
void* pvalloc(size_t size) {
return perfetto::profiling::wrap_pvalloc(g_heap_id, __libc_pvalloc, size);
}
void* valloc(size_t size) {
return perfetto::profiling::wrap_valloc(g_heap_id, __libc_valloc, size);
}
void* reallocarray(void* ptr, size_t nmemb, size_t size) {
return perfetto::profiling::wrap_reallocarray(g_heap_id, __libc_reallocarray,
ptr, nmemb, size);
}
#pragma GCC visibility pop
}
|
