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 reallocs; 36 uptr realloced; 37 uptr mmaps; 38 uptr mmaped; 39 uptr munmaps; 40 uptr munmaped; 41 uptr malloc_large; 42 uptr malloced_by_size[kNumberOfSizeClasses]; 43 44 // Ctor for global AsanStats (accumulated stats for dead threads). AsanStatsAsanStats45 explicit AsanStats(LinkerInitialized) { } 46 // Creates empty stats. 47 AsanStats(); 48 49 void Print(); // Prints formatted stats to stderr. 50 void Clear(); 51 void MergeFrom(const AsanStats *stats); 52 }; 53 54 // Returns stats for GetCurrentThread(), or stats for fake "unknown thread" 55 // if GetCurrentThread() returns 0. 56 AsanStats &GetCurrentThreadStats(); 57 // Flushes a given stats into accumulated stats of dead threads. 58 void FlushToDeadThreadStats(AsanStats *stats); 59 60 // A cross-platform equivalent of malloc_statistics_t on Mac OS. 61 struct AsanMallocStats { 62 uptr blocks_in_use; 63 uptr size_in_use; 64 uptr max_size_in_use; 65 uptr size_allocated; 66 }; 67 68 void FillMallocStatistics(AsanMallocStats *malloc_stats); 69 70 } // namespace __asan 71 72 #endif // ASAN_STATS_H 73