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  
      19  namespace __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.
      24  struct 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.
      55  AsanStats &GetCurrentThreadStats();
      56  // Flushes a given stats into accumulated stats of dead threads.
      57  void FlushToDeadThreadStats(AsanStats *stats);
      58  
      59  // A cross-platform equivalent of malloc_statistics_t on Mac OS.
      60  struct AsanMallocStats {
      61    uptr blocks_in_use;
      62    uptr size_in_use;
      63    uptr max_size_in_use;
      64    uptr size_allocated;
      65  };
      66  
      67  void FillMallocStatistics(AsanMallocStats *malloc_stats);
      68  
      69  }  // namespace __asan
      70  
      71  #endif  // ASAN_STATS_H