1 files changed, 59 insertions, 0 deletions
diff --git a/contrib/llvm-project/compiler-rt/lib/memprof/memprof_stack.cpp b/contrib/llvm-project/compiler-rt/lib/memprof/memprof_stack.cpp
new file mode 100644
index 000000000000..b5beeeadafd7
--- /dev/null
+++ b/contrib/llvm-project/compiler-rt/lib/memprof/memprof_stack.cpp
@@ -0,0 +1,59 @@
+//===-- memprof_stack.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 for MemProf stack trace.
+//===----------------------------------------------------------------------===//
+#include "memprof_stack.h"
+#include "memprof_internal.h"
+#include "sanitizer_common/sanitizer_atomic.h"
+
+namespace __memprof {
+
+static atomic_uint32_t malloc_context_size;
+
+void SetMallocContextSize(u32 size) {
+  atomic_store(&malloc_context_size, size, memory_order_release);
+}
+
+u32 GetMallocContextSize() {
+  return atomic_load(&malloc_context_size, memory_order_acquire);
+}
+
+} // namespace __memprof
+
+void __sanitizer::BufferedStackTrace::UnwindImpl(uptr pc, uptr bp,
+                                                 void *context,
+                                                 bool request_fast,
+                                                 u32 max_depth) {
+  using namespace __memprof;
+  size = 0;
+  if (UNLIKELY(!memprof_inited))
+    return;
+  request_fast = StackTrace::WillUseFastUnwind(request_fast);
+  MemprofThread *t = GetCurrentThread();
+  if (request_fast) {
+    if (t) {
+      Unwind(max_depth, pc, bp, nullptr, t->stack_top(), t->stack_bottom(),
+             true);
+    }
+    return;
+  }
+  Unwind(max_depth, pc, bp, context, 0, 0, false);
+}
+
+// ------------------ Interface -------------- {{{1
+
+extern "C" {
+SANITIZER_INTERFACE_ATTRIBUTE
+void __sanitizer_print_stack_trace() {
+  using namespace __memprof;
+  PRINT_CURRENT_STACK();
+}
+} // extern "C"