1//===-- asan_stats.h --------------------------------------------*- C++ -*-===//
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 AddressSanitizer, an address sanity checker.
10//
11// ASan-private header for statistics.
12//===----------------------------------------------------------------------===//
13#ifndef ASAN_STATS_H
14#define ASAN_STATS_H
15
16#include "asan_allocator.h"
17#include "asan_internal.h"
18
19namespace __asan {
20
21// AsanStats struct is NOT thread-safe.
22// Each AsanThread has its own AsanStats, which are sometimes flushed
23// to the accumulated AsanStats.
24struct AsanStats {
25  // AsanStats must be a struct consisting of uptr fields only.
26  // When merging two AsanStats structs, we treat them as arrays of uptr.
27  uptr mallocs;
28  uptr malloced;
29  uptr malloced_redzones;
30  uptr frees;
31  uptr freed;
32  uptr real_frees;
33  uptr really_freed;
34  uptr reallocs;
35  uptr realloced;
36  uptr mmaps;
37  uptr mmaped;
38  uptr munmaps;
39  uptr munmaped;
40  uptr malloc_large;
41  uptr malloced_by_size[kNumberOfSizeClasses];
42
43  // Ctor for global AsanStats (accumulated stats for dead threads).
44  explicit AsanStats(LinkerInitialized) { }
45  // Creates empty stats.
46  AsanStats();
47
48  void Print();  // Prints formatted stats to stderr.
49  void Clear();
50  void MergeFrom(const AsanStats *stats);
51};
52
53// Returns stats for GetCurrentThread(), or stats for fake "unknown thread"
54// if GetCurrentThread() returns 0.
55AsanStats &GetCurrentThreadStats();
56// Flushes a given stats into accumulated stats of dead threads.
57void FlushToDeadThreadStats(AsanStats *stats);
58
59// A cross-platform equivalent of malloc_statistics_t on Mac OS.
60struct AsanMallocStats {
61  uptr blocks_in_use;
62  uptr size_in_use;
63  uptr max_size_in_use;
64  uptr size_allocated;
65};
66
67void FillMallocStatistics(AsanMallocStats *malloc_stats);
68
69}  // namespace __asan
70
71#endif  // ASAN_STATS_H
72