1 files changed, 60 insertions, 0 deletions
diff --git a/gcc-4.9/libsanitizer/sanitizer_common/sanitizer_stackdepot.h b/gcc-4.9/libsanitizer/sanitizer_common/sanitizer_stackdepot.h
new file mode 100644
index 000000000..c2c04ef9d
--- /dev/null
+++ b/gcc-4.9/libsanitizer/sanitizer_common/sanitizer_stackdepot.h
@@ -0,0 +1,60 @@
+//===-- sanitizer_stackdepot.h ----------------------------------*- C++ -*-===//
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file is shared between AddressSanitizer and ThreadSanitizer
+// run-time libraries.
+//===----------------------------------------------------------------------===//
+#ifndef SANITIZER_STACKDEPOT_H
+#define SANITIZER_STACKDEPOT_H
+
+#include "sanitizer_common.h"
+#include "sanitizer_internal_defs.h"
+
+namespace __sanitizer {
+
+// StackDepot efficiently stores huge amounts of stack traces.
+
+// Maps stack trace to an unique id.
+u32 StackDepotPut(const uptr *stack, uptr size);
+// Retrieves a stored stack trace by the id.
+const uptr *StackDepotGet(u32 id, uptr *size);
+
+struct StackDepotStats {
+  uptr n_uniq_ids;
+  uptr mapped;
+};
+
+StackDepotStats *StackDepotGetStats();
+
+struct StackDesc;
+
+// Instantiating this class creates a snapshot of StackDepot which can be
+// efficiently queried with StackDepotGet(). You can use it concurrently with
+// StackDepot, but the snapshot is only guaranteed to contain those stack traces
+// which were stored before it was instantiated.
+class StackDepotReverseMap {
+ public:
+  StackDepotReverseMap();
+  const uptr *Get(u32 id, uptr *size);
+
+ private:
+  struct IdDescPair {
+    u32 id;
+    StackDesc *desc;
+
+    static bool IdComparator(const IdDescPair &a, const IdDescPair &b);
+  };
+
+  InternalMmapVector<IdDescPair> map_;
+
+  // Disallow evil constructors.
+  StackDepotReverseMap(const StackDepotReverseMap&);
+  void operator=(const StackDepotReverseMap&);
+};
+}  // namespace __sanitizer
+
+#endif  // SANITIZER_STACKDEPOT_H