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//===-- sanitizer_stackdepot.h ----------------------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// 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
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