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). AsanStatsAsanStats44 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 72