asan_stats.cc revision e954101f6602ac181a2c3accfbbad0ae51b0bf7c
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_interface.h" 16#include "asan_internal.h" 17#include "asan_lock.h" 18#include "asan_stats.h" 19#include "asan_thread_registry.h" 20 21namespace __asan { 22 23AsanStats::AsanStats() { 24 CHECK(REAL(memset) != 0); 25 REAL(memset)(this, 0, sizeof(AsanStats)); 26} 27 28static void PrintMallocStatsArray(const char *prefix, 29 uptr (&array)[kNumberOfSizeClasses]) { 30 AsanPrintf("%s", prefix); 31 for (uptr i = 0; i < kNumberOfSizeClasses; i++) { 32 if (!array[i]) continue; 33 AsanPrintf("%zu:%zu; ", i, array[i]); 34 } 35 AsanPrintf("\n"); 36} 37 38void AsanStats::Print() { 39 AsanPrintf("Stats: %zuM malloced (%zuM for red zones) by %zu calls\n", 40 malloced>>20, malloced_redzones>>20, mallocs); 41 AsanPrintf("Stats: %zuM realloced by %zu calls\n", realloced>>20, reallocs); 42 AsanPrintf("Stats: %zuM freed by %zu calls\n", freed>>20, frees); 43 AsanPrintf("Stats: %zuM really freed by %zu calls\n", 44 really_freed>>20, real_frees); 45 AsanPrintf("Stats: %zuM (%zu full pages) mmaped in %zu calls\n", 46 mmaped>>20, mmaped / kPageSize, mmaps); 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 AsanPrintf("Stats: malloc large: %zu small slow: %zu\n", 53 malloc_large, malloc_small_slow); 54} 55 56static AsanLock print_lock(LINKER_INITIALIZED); 57 58static void PrintAccumulatedStats() { 59 AsanStats stats = asanThreadRegistry().GetAccumulatedStats(); 60 // Use lock to keep reports from mixing up. 61 ScopedLock lock(&print_lock); 62 stats.Print(); 63} 64 65} // namespace __asan 66 67// ---------------------- Interface ---------------- {{{1 68using namespace __asan; // NOLINT 69 70uptr __asan_get_current_allocated_bytes() { 71 return asanThreadRegistry().GetCurrentAllocatedBytes(); 72} 73 74uptr __asan_get_heap_size() { 75 return asanThreadRegistry().GetHeapSize(); 76} 77 78uptr __asan_get_free_bytes() { 79 return asanThreadRegistry().GetFreeBytes(); 80} 81 82uptr __asan_get_unmapped_bytes() { 83 return 0; 84} 85 86void __asan_print_accumulated_stats() { 87 PrintAccumulatedStats(); 88} 89