asan_stats.h revision 717ece58e18190c4aef50bd16254db1d74036395 
1//===-- asan_stats.h --------------------------------------------*- C++ -*-===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9//
10// This file is a part of AddressSanitizer, an address sanity checker.
11//
12// ASan-private header for statistics.
13//===----------------------------------------------------------------------===//
14#ifndef ASAN_STATS_H
15#define ASAN_STATS_H
16
17#include "asan_allocator.h"
18#include "asan_internal.h"
19
20namespace __asan {
21
22// AsanStats struct is NOT thread-safe.
23// Each AsanThread has its own AsanStats, which are sometimes flushed
24// to the accumulated AsanStats.
25struct AsanStats {
26  // AsanStats must be a struct consisting of uptr fields only.
27  // When merging two AsanStats structs, we treat them as arrays of uptr.
28  uptr mallocs;
29  uptr malloced;
30  uptr malloced_redzones;
31  uptr frees;
32  uptr freed;
33  uptr real_frees;
34  uptr really_freed;
35  uptr really_freed_redzones;
36  uptr reallocs;
37  uptr realloced;
38  uptr mmaps;
39  uptr mmaped;
40  uptr munmaps;
41  uptr munmaped;
42  uptr mmaped_by_size[kNumberOfSizeClasses];
43  uptr malloced_by_size[kNumberOfSizeClasses];
44  uptr freed_by_size[kNumberOfSizeClasses];
45  uptr really_freed_by_size[kNumberOfSizeClasses];
46
47  uptr malloc_large;
48  uptr malloc_small_slow;
49
50  // Ctor for global AsanStats (accumulated stats and main thread stats).
51  explicit AsanStats(LinkerInitialized) { }
52  // Default ctor for thread-local stats.
53  AsanStats();
54
55  void Print();  // Prints formatted stats to stderr.
56  void Clear();
57  void MergeFrom(const AsanStats *stats);
58};
59
60// Returns stats for GetCurrentThread(), or stats for fake "unknown thread"
61// if GetCurrentThread() returns 0.
62AsanStats &GetCurrentThreadStats();
63// Flushes a given stats into accumulated stats of dead threads.
64void FlushToDeadThreadStats(AsanStats *stats);
65
66// A cross-platform equivalent of malloc_statistics_t on Mac OS.
67struct AsanMallocStats {
68  uptr blocks_in_use;
69  uptr size_in_use;
70  uptr max_size_in_use;
71  uptr size_allocated;
72};
73
74void FillMallocStatistics(AsanMallocStats *malloc_stats);
75
76}  // namespace __asan
77
78#endif  // ASAN_STATS_H
79