add sanitizers dependencies

1 files changed, 157 insertions, 0 deletions

diff --git a/contrib/libs/clang14-rt/lib/memprof/memprof_stats.cpp b/contrib/libs/clang14-rt/lib/memprof/memprof_stats.cpp
new file mode 100644
index 0000000000..c8faebfa12
--- /dev/null
+++ b/contrib/libs/clang14-rt/lib/memprof/memprof_stats.cpp
@@ -0,0 +1,157 @@
+//===-- memprof_stats.cpp ------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// This file is a part of MemProfiler, a memory profiler.
+//
+// Code related to statistics collected by MemProfiler.
+//===----------------------------------------------------------------------===//
+#include "memprof_stats.h"
+#include "memprof_interceptors.h"
+#include "memprof_internal.h"
+#include "memprof_thread.h"
+#include "sanitizer_common/sanitizer_allocator_interface.h"
+#include "sanitizer_common/sanitizer_mutex.h"
+#include "sanitizer_common/sanitizer_stackdepot.h"
+
+namespace __memprof {
+
+MemprofStats::MemprofStats() { Clear(); }
+
+void MemprofStats::Clear() {
+  if (REAL(memset))
+    return (void)REAL(memset)(this, 0, sizeof(MemprofStats));
+  internal_memset(this, 0, sizeof(MemprofStats));
+}
+
+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 MemprofStats::Print() {
+  Printf("Stats: %zuM malloced (%zuM for overhead) by %zu calls\n",
+         malloced >> 20, malloced_overhead >> 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("  mallocs by size class: ", malloced_by_size);
+  Printf("Stats: malloc large: %zu\n", malloc_large);
+}
+
+void MemprofStats::MergeFrom(const MemprofStats *stats) {
+  uptr *dst_ptr = reinterpret_cast<uptr *>(this);
+  const uptr *src_ptr = reinterpret_cast<const uptr *>(stats);
+  uptr num_fields = sizeof(*this) / sizeof(uptr);
+  for (uptr i = 0; i < num_fields; i++)
+    dst_ptr[i] += src_ptr[i];
+}
+
+static Mutex print_lock;
+
+static MemprofStats unknown_thread_stats(LINKER_INITIALIZED);
+static MemprofStats dead_threads_stats(LINKER_INITIALIZED);
+static Mutex dead_threads_stats_lock;
+// Required for malloc_zone_statistics() on OS X. This can't be stored in
+// per-thread MemprofStats.
+static uptr max_malloced_memory;
+
+static void MergeThreadStats(ThreadContextBase *tctx_base, void *arg) {
+  MemprofStats *accumulated_stats = reinterpret_cast<MemprofStats *>(arg);
+  MemprofThreadContext *tctx = static_cast<MemprofThreadContext *>(tctx_base);
+  if (MemprofThread *t = tctx->thread)
+    accumulated_stats->MergeFrom(&t->stats());
+}
+
+static void GetAccumulatedStats(MemprofStats *stats) {
+  stats->Clear();
+  {
+    ThreadRegistryLock l(&memprofThreadRegistry());
+    memprofThreadRegistry().RunCallbackForEachThreadLocked(MergeThreadStats,
+                                                           stats);
+  }
+  stats->MergeFrom(&unknown_thread_stats);
+  {
+    Lock lock(&dead_threads_stats_lock);
+    stats->MergeFrom(&dead_threads_stats);
+  }
+  // This is not very accurate: we may miss allocation peaks that happen
+  // between two updates of accumulated_stats_. For more accurate bookkeeping
+  // the maximum should be updated on every malloc(), which is unacceptable.
+  if (max_malloced_memory < stats->malloced) {
+    max_malloced_memory = stats->malloced;
+  }
+}
+
+void FlushToDeadThreadStats(MemprofStats *stats) {
+  Lock lock(&dead_threads_stats_lock);
+  dead_threads_stats.MergeFrom(stats);
+  stats->Clear();
+}
+
+MemprofStats &GetCurrentThreadStats() {
+  MemprofThread *t = GetCurrentThread();
+  return (t) ? t->stats() : unknown_thread_stats;
+}
+
+static void PrintAccumulatedStats() {
+  MemprofStats stats;
+  GetAccumulatedStats(&stats);
+  // Use lock to keep reports from mixing up.
+  Lock lock(&print_lock);
+  stats.Print();
+  StackDepotStats stack_depot_stats = StackDepotGetStats();
+  Printf("Stats: StackDepot: %zd ids; %zdM allocated\n",
+         stack_depot_stats.n_uniq_ids, stack_depot_stats.allocated >> 20);
+  PrintInternalAllocatorStats();
+}
+
+} // namespace __memprof
+
+// ---------------------- Interface ---------------- {{{1
+using namespace __memprof;
+
+uptr __sanitizer_get_current_allocated_bytes() {
+  MemprofStats stats;
+  GetAccumulatedStats(&stats);
+  uptr malloced = stats.malloced;
+  uptr freed = stats.freed;
+  // Return sane value if malloced < freed due to racy
+  // way we update accumulated stats.
+  return (malloced > freed) ? malloced - freed : 1;
+}
+
+uptr __sanitizer_get_heap_size() {
+  MemprofStats stats;
+  GetAccumulatedStats(&stats);
+  return stats.mmaped - stats.munmaped;
+}
+
+uptr __sanitizer_get_free_bytes() {
+  MemprofStats stats;
+  GetAccumulatedStats(&stats);
+  uptr total_free = stats.mmaped - stats.munmaped + stats.really_freed;
+  uptr total_used = stats.malloced;
+  // Return sane value if total_free < total_used due to racy
+  // way we update accumulated stats.
+  return (total_free > total_used) ? total_free - total_used : 1;
+}
+
+uptr __sanitizer_get_unmapped_bytes() { return 0; }
+
+void __memprof_print_accumulated_stats() { PrintAccumulatedStats(); }