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 
20 namespace __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.
25 struct 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 for dead threads).
AsanStatsAsanStats51   explicit AsanStats(LinkerInitialized) { }
52   // Creates empty 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.
62 AsanStats &GetCurrentThreadStats();
63 // Flushes a given stats into accumulated stats of dead threads.
64 void FlushToDeadThreadStats(AsanStats *stats);
65 
66 // A cross-platform equivalent of malloc_statistics_t on Mac OS.
67 struct AsanMallocStats {
68   uptr blocks_in_use;
69   uptr size_in_use;
70   uptr max_size_in_use;
71   uptr size_allocated;
72 };
73 
74 void FillMallocStatistics(AsanMallocStats *malloc_stats);
75 
76 }  // namespace __asan
77 
78 #endif  // ASAN_STATS_H
79