88 lines
2.7 KiB
C++
88 lines
2.7 KiB
C++
//===-- asan_stats.cc -----------------------------------------------------===//
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file is a part of AddressSanitizer, an address sanity checker.
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//
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// Code related to statistics collected by AddressSanitizer.
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//===----------------------------------------------------------------------===//
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#include "asan_interceptors.h"
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#include "asan_internal.h"
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#include "asan_lock.h"
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#include "asan_stats.h"
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#include "asan_thread_registry.h"
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#include "sanitizer/asan_interface.h"
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namespace __asan {
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AsanStats::AsanStats() {
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CHECK(REAL(memset) != 0);
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REAL(memset)(this, 0, sizeof(AsanStats));
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}
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static void PrintMallocStatsArray(const char *prefix,
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uptr (&array)[kNumberOfSizeClasses]) {
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Printf("%s", prefix);
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for (uptr i = 0; i < kNumberOfSizeClasses; i++) {
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if (!array[i]) continue;
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Printf("%zu:%zu; ", i, array[i]);
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}
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Printf("\n");
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}
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void AsanStats::Print() {
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Printf("Stats: %zuM malloced (%zuM for red zones) by %zu calls\n",
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malloced>>20, malloced_redzones>>20, mallocs);
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Printf("Stats: %zuM realloced by %zu calls\n", realloced>>20, reallocs);
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Printf("Stats: %zuM freed by %zu calls\n", freed>>20, frees);
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Printf("Stats: %zuM really freed by %zu calls\n",
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really_freed>>20, real_frees);
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Printf("Stats: %zuM (%zu full pages) mmaped in %zu calls\n",
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mmaped>>20, mmaped / GetPageSizeCached(), mmaps);
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PrintMallocStatsArray(" mmaps by size class: ", mmaped_by_size);
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PrintMallocStatsArray(" mallocs by size class: ", malloced_by_size);
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PrintMallocStatsArray(" frees by size class: ", freed_by_size);
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PrintMallocStatsArray(" rfrees by size class: ", really_freed_by_size);
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Printf("Stats: malloc large: %zu small slow: %zu\n",
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malloc_large, malloc_small_slow);
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}
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static AsanLock print_lock(LINKER_INITIALIZED);
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static void PrintAccumulatedStats() {
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AsanStats stats;
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asanThreadRegistry().GetAccumulatedStats(&stats);
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// Use lock to keep reports from mixing up.
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ScopedLock lock(&print_lock);
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stats.Print();
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}
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} // namespace __asan
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// ---------------------- Interface ---------------- {{{1
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using namespace __asan; // NOLINT
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uptr __asan_get_current_allocated_bytes() {
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return asanThreadRegistry().GetCurrentAllocatedBytes();
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}
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uptr __asan_get_heap_size() {
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return asanThreadRegistry().GetHeapSize();
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}
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uptr __asan_get_free_bytes() {
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return asanThreadRegistry().GetFreeBytes();
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}
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uptr __asan_get_unmapped_bytes() {
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return 0;
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}
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void __asan_print_accumulated_stats() {
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PrintAccumulatedStats();
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}
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