libsanitizer/asan/asan_stats.h

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