lib/asan/asan_stats.h

   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).
  51   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