1 //===-- asan_stats.cc -----------------------------------------------------===// 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 // Code related to statistics collected by AddressSanitizer. 13 //===----------------------------------------------------------------------===// 14 #include "asan_interceptors.h" 15 #include "asan_internal.h" 16 #include "asan_stats.h" 17 #include "asan_thread_registry.h" 18 #include "sanitizer_common/sanitizer_stackdepot.h" 19 20 namespace __asan { 21 22 AsanStats::AsanStats() { 23 CHECK(REAL(memset) != 0); 24 REAL(memset)(this, 0, sizeof(AsanStats)); 25 } 26 27 static void PrintMallocStatsArray(const char *prefix, 28 uptr (&array)[kNumberOfSizeClasses]) { 29 Printf("%s", prefix); 30 for (uptr i = 0; i < kNumberOfSizeClasses; i++) { 31 if (!array[i]) continue; 32 Printf("%zu:%zu; ", i, array[i]); 33 } 34 Printf("\n"); 35 } 36 37 void AsanStats::Print() { 38 Printf("Stats: %zuM malloced (%zuM for red zones) by %zu calls\n", 39 malloced>>20, malloced_redzones>>20, mallocs); 40 Printf("Stats: %zuM realloced by %zu calls\n", realloced>>20, reallocs); 41 Printf("Stats: %zuM freed by %zu calls\n", freed>>20, frees); 42 Printf("Stats: %zuM really freed by %zu calls\n", 43 really_freed>>20, real_frees); 44 Printf("Stats: %zuM (%zuM-%zuM) mmaped; %zu maps, %zu unmaps\n", 45 (mmaped-munmaped)>>20, mmaped>>20, munmaped>>20, 46 mmaps, munmaps); 47 48 PrintMallocStatsArray(" mmaps by size class: ", mmaped_by_size); 49 PrintMallocStatsArray(" mallocs by size class: ", malloced_by_size); 50 PrintMallocStatsArray(" frees by size class: ", freed_by_size); 51 PrintMallocStatsArray(" rfrees by size class: ", really_freed_by_size); 52 Printf("Stats: malloc large: %zu small slow: %zu\n", 53 malloc_large, malloc_small_slow); 54 } 55 56 static BlockingMutex print_lock(LINKER_INITIALIZED); 57 58 static void PrintAccumulatedStats() { 59 AsanStats stats; 60 asanThreadRegistry().GetAccumulatedStats(&stats); 61 // Use lock to keep reports from mixing up. 62 BlockingMutexLock lock(&print_lock); 63 stats.Print(); 64 StackDepotStats *stack_depot_stats = StackDepotGetStats(); 65 Printf("Stats: StackDepot: %zd ids; %zdM mapped\n", 66 stack_depot_stats->n_uniq_ids, stack_depot_stats->mapped >> 20); 67 PrintInternalAllocatorStats(); 68 } 69 70 } // namespace __asan 71 72 // ---------------------- Interface ---------------- {{{1 73 using namespace __asan; // NOLINT 74 75 uptr __asan_get_current_allocated_bytes() { 76 return asanThreadRegistry().GetCurrentAllocatedBytes(); 77 } 78 79 uptr __asan_get_heap_size() { 80 return asanThreadRegistry().GetHeapSize(); 81 } 82 83 uptr __asan_get_free_bytes() { 84 return asanThreadRegistry().GetFreeBytes(); 85 } 86 87 uptr __asan_get_unmapped_bytes() { 88 return 0; 89 } 90 91 void __asan_print_accumulated_stats() { 92 PrintAccumulatedStats(); 93 } 94
