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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_lock.h" | |
17 | #include "asan_stats.h" | |
18 | #include "asan_thread_registry.h" | |
19 | #include "sanitizer/asan_interface.h" | |
20 | ||
21 | namespace __asan { | |
22 | ||
23 | AsanStats::AsanStats() { | |
24 | CHECK(REAL(memset) != 0); | |
25 | REAL(memset)(this, 0, sizeof(AsanStats)); | |
26 | } | |
27 | ||
28 | static void PrintMallocStatsArray(const char *prefix, | |
29 | uptr (&array)[kNumberOfSizeClasses]) { | |
30 | Printf("%s", prefix); | |
31 | for (uptr i = 0; i < kNumberOfSizeClasses; i++) { | |
32 | if (!array[i]) continue; | |
33 | Printf("%zu:%zu; ", i, array[i]); | |
34 | } | |
35 | Printf("\n"); | |
36 | } | |
37 | ||
38 | void AsanStats::Print() { | |
39 | Printf("Stats: %zuM malloced (%zuM for red zones) by %zu calls\n", | |
40 | malloced>>20, malloced_redzones>>20, mallocs); | |
41 | Printf("Stats: %zuM realloced by %zu calls\n", realloced>>20, reallocs); | |
42 | Printf("Stats: %zuM freed by %zu calls\n", freed>>20, frees); | |
43 | Printf("Stats: %zuM really freed by %zu calls\n", | |
44 | really_freed>>20, real_frees); | |
45 | Printf("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 | Printf("Stats: malloc large: %zu small slow: %zu\n", | |
53 | malloc_large, malloc_small_slow); | |
54 | } | |
55 | ||
56 | static AsanLock print_lock(LINKER_INITIALIZED); | |
57 | ||
58 | static 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 | |
68 | using namespace __asan; // NOLINT | |
69 | ||
70 | uptr __asan_get_current_allocated_bytes() { | |
71 | return asanThreadRegistry().GetCurrentAllocatedBytes(); | |
72 | } | |
73 | ||
74 | uptr __asan_get_heap_size() { | |
75 | return asanThreadRegistry().GetHeapSize(); | |
76 | } | |
77 | ||
78 | uptr __asan_get_free_bytes() { | |
79 | return asanThreadRegistry().GetFreeBytes(); | |
80 | } | |
81 | ||
82 | uptr __asan_get_unmapped_bytes() { | |
83 | return 0; | |
84 | } | |
85 | ||
86 | void __asan_print_accumulated_stats() { | |
87 | PrintAccumulatedStats(); | |
88 | } |