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
|
//===-- asan_memory_profile.cc.cc -----------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file is a part of AddressSanitizer, an address sanity checker.
//
// This file implements __sanitizer_print_memory_profile.
//===----------------------------------------------------------------------===//
#include "sanitizer_common/sanitizer_common.h"
#include "sanitizer_common/sanitizer_stackdepot.h"
#include "sanitizer_common/sanitizer_stacktrace.h"
#include "sanitizer_common/sanitizer_stoptheworld.h"
#include "lsan/lsan_common.h"
#include "asan/asan_allocator.h"
#if CAN_SANITIZE_LEAKS
namespace __asan {
struct AllocationSite {
u32 id;
uptr total_size;
uptr count;
};
class HeapProfile {
public:
HeapProfile() : allocations_(1024) {}
void ProcessChunk(const AsanChunkView& cv) {
if (cv.IsAllocated()) {
total_allocated_user_size_ += cv.UsedSize();
total_allocated_count_++;
u32 id = cv.GetAllocStackId();
if (id)
Insert(id, cv.UsedSize());
} else if (cv.IsQuarantined()) {
total_quarantined_user_size_ += cv.UsedSize();
total_quarantined_count_++;
} else {
total_other_count_++;
}
}
void Print(uptr top_percent) {
InternalSort(&allocations_, allocations_.size(),
[](const AllocationSite &a, const AllocationSite &b) {
return a.total_size > b.total_size;
});
CHECK(total_allocated_user_size_);
uptr total_shown = 0;
Printf("Live Heap Allocations: %zd bytes in %zd chunks; quarantined: "
"%zd bytes in %zd chunks; %zd other chunks; total chunks: %zd; "
"showing top %zd%%\n",
total_allocated_user_size_, total_allocated_count_,
total_quarantined_user_size_, total_quarantined_count_,
total_other_count_, total_allocated_count_ +
total_quarantined_count_ + total_other_count_, top_percent);
for (uptr i = 0; i < allocations_.size(); i++) {
auto &a = allocations_[i];
Printf("%zd byte(s) (%zd%%) in %zd allocation(s)\n", a.total_size,
a.total_size * 100 / total_allocated_user_size_, a.count);
StackDepotGet(a.id).Print();
total_shown += a.total_size;
if (total_shown * 100 / total_allocated_user_size_ > top_percent)
break;
}
}
private:
uptr total_allocated_user_size_ = 0;
uptr total_allocated_count_ = 0;
uptr total_quarantined_user_size_ = 0;
uptr total_quarantined_count_ = 0;
uptr total_other_count_ = 0;
InternalMmapVector<AllocationSite> allocations_;
void Insert(u32 id, uptr size) {
// Linear lookup will be good enough for most cases (although not all).
for (uptr i = 0; i < allocations_.size(); i++) {
if (allocations_[i].id == id) {
allocations_[i].total_size += size;
allocations_[i].count++;
return;
}
}
allocations_.push_back({id, size, 1});
}
};
static void ChunkCallback(uptr chunk, void *arg) {
reinterpret_cast<HeapProfile*>(arg)->ProcessChunk(
FindHeapChunkByAllocBeg(chunk));
}
static void MemoryProfileCB(const SuspendedThreadsList &suspended_threads_list,
void *argument) {
HeapProfile hp;
__lsan::ForEachChunk(ChunkCallback, &hp);
hp.Print(reinterpret_cast<uptr>(argument));
}
} // namespace __asan
extern "C" {
SANITIZER_INTERFACE_ATTRIBUTE
void __sanitizer_print_memory_profile(uptr top_percent) {
__sanitizer::StopTheWorld(__asan::MemoryProfileCB, (void*)top_percent);
}
} // extern "C"
#endif // CAN_SANITIZE_LEAKS
|
