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//===-- sanitizer_stackdepot.h ----------------------------------*- C++ -*-===//
//
// 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 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"
#include "sanitizer_stacktrace.h"
namespace __sanitizer {
// StackDepot efficiently stores huge amounts of stack traces.
struct StackDepotNode;
struct StackDepotHandle {
StackDepotNode *node_ = nullptr;
u32 id_ = 0;
StackDepotHandle(StackDepotNode *node, u32 id) : node_(node), id_(id) {}
bool valid() const { return node_; }
u32 id() const { return id_; }
int use_count() const;
void inc_use_count_unsafe();
};
const int kStackDepotMaxUseCount = 1U << (SANITIZER_ANDROID ? 16 : 20);
StackDepotStats StackDepotGetStats();
u32 StackDepotPut(StackTrace stack);
StackDepotHandle StackDepotPut_WithHandle(StackTrace stack);
// Retrieves a stored stack trace by the id.
StackTrace StackDepotGet(u32 id);
void StackDepotLockBeforeFork();
void StackDepotUnlockAfterFork(bool fork_child);
void StackDepotPrintAll();
void StackDepotStopBackgroundThread();
void StackDepotTestOnlyUnmap();
} // namespace __sanitizer
#endif // SANITIZER_STACKDEPOT_H
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