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//===-- asan_stats.cc -----------------------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file is a part of AddressSanitizer, an address sanity checker.
//
// Code related to statistics collected by AddressSanitizer.
//===----------------------------------------------------------------------===//
#include "asan_interceptors.h"
#include "asan_internal.h"
#include "asan_stats.h"
#include "asan_thread_registry.h"
#include "sanitizer_common/sanitizer_stackdepot.h"
namespace __asan {
AsanStats::AsanStats() {
CHECK(REAL(memset) != 0);
REAL(memset)(this, 0, sizeof(AsanStats));
}
static void PrintMallocStatsArray(const char *prefix,
uptr (&array)[kNumberOfSizeClasses]) {
Printf("%s", prefix);
for (uptr i = 0; i < kNumberOfSizeClasses; i++) {
if (!array[i]) continue;
Printf("%zu:%zu; ", i, array[i]);
}
Printf("\n");
}
void AsanStats::Print() {
Printf("Stats: %zuM malloced (%zuM for red zones) by %zu calls\n",
malloced>>20, malloced_redzones>>20, mallocs);
Printf("Stats: %zuM realloced by %zu calls\n", realloced>>20, reallocs);
Printf("Stats: %zuM freed by %zu calls\n", freed>>20, frees);
Printf("Stats: %zuM really freed by %zu calls\n",
really_freed>>20, real_frees);
Printf("Stats: %zuM (%zuM-%zuM) mmaped; %zu maps, %zu unmaps\n",
(mmaped-munmaped)>>20, mmaped>>20, munmaped>>20,
mmaps, munmaps);
PrintMallocStatsArray(" mmaps by size class: ", mmaped_by_size);
PrintMallocStatsArray(" mallocs by size class: ", malloced_by_size);
PrintMallocStatsArray(" frees by size class: ", freed_by_size);
PrintMallocStatsArray(" rfrees by size class: ", really_freed_by_size);
Printf("Stats: malloc large: %zu small slow: %zu\n",
malloc_large, malloc_small_slow);
}
static BlockingMutex print_lock(LINKER_INITIALIZED);
static void PrintAccumulatedStats() {
AsanStats stats;
asanThreadRegistry().GetAccumulatedStats(&stats);
// Use lock to keep reports from mixing up.
BlockingMutexLock lock(&print_lock);
stats.Print();
StackDepotStats *stack_depot_stats = StackDepotGetStats();
Printf("Stats: StackDepot: %zd ids; %zdM mapped\n",
stack_depot_stats->n_uniq_ids, stack_depot_stats->mapped >> 20);
PrintInternalAllocatorStats();
}
} // namespace __asan
// ---------------------- Interface ---------------- {{{1
using namespace __asan; // NOLINT
uptr __asan_get_current_allocated_bytes() {
return asanThreadRegistry().GetCurrentAllocatedBytes();
}
uptr __asan_get_heap_size() {
return asanThreadRegistry().GetHeapSize();
}
uptr __asan_get_free_bytes() {
return asanThreadRegistry().GetFreeBytes();
}
uptr __asan_get_unmapped_bytes() {
return 0;
}
void __asan_print_accumulated_stats() {
PrintAccumulatedStats();
}
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