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usr / src / contrib / llvm-project / compiler-rt / lib / scudo /

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📄 scudo_allocator.cpp(30.02 KB)
📄 scudo_allocator.h(4.54 KB)
📄 scudo_allocator_combined.h(2.14 KB)
📄 scudo_allocator_secondary.h(7.03 KB)
📄 scudo_crc32.cpp(893 B)
📄 scudo_crc32.h(4.74 KB)
📄 scudo_errors.cpp(2.82 KB)
📄 scudo_errors.h(1.31 KB)
📄 scudo_flags.cpp(4.25 KB)
📄 scudo_flags.h(805 B)
📄 scudo_flags.inc(2.11 KB)
📄 scudo_interface_internal.h(984 B)
📄 scudo_malloc.cpp(2.2 KB)
📄 scudo_new_delete.cpp(4.14 KB)
📄 scudo_platform.h(3.09 KB)
📄 scudo_termination.cpp(1.36 KB)
📄 scudo_tsd.h(1.67 KB)
📄 scudo_tsd_exclusive.cpp(2.17 KB)
📄 scudo_tsd_exclusive.inc(1.34 KB)
📄 scudo_tsd_shared.cpp(3.38 KB)
📄 scudo_tsd_shared.inc(1.61 KB)
📄 scudo_utils.cpp(4.89 KB)
📄 scudo_utils.h(986 B)
📁 standalone

Editing: scudo_tsd.h

//===-- scudo_tsd.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
//
//===----------------------------------------------------------------------===//
///
/// Scudo thread specific data definition.
/// Implementation will differ based on the thread local storage primitives
/// offered by the underlying platform.
///
//===----------------------------------------------------------------------===//

#ifndef SCUDO_TSD_H_
#define SCUDO_TSD_H_

#include "scudo_allocator.h"
#include "scudo_utils.h"

#include <pthread.h>

namespace __scudo {

struct ALIGNED(SANITIZER_CACHE_LINE_SIZE) ScudoTSD {
  AllocatorCacheT Cache;
  uptr QuarantineCachePlaceHolder[4];

void init();
  void commitBack();

INLINE bool tryLock() {
    if (Mutex.TryLock()) {
      atomic_store_relaxed(&Precedence, 0);
      return true;
    }
    if (atomic_load_relaxed(&Precedence) == 0)
      atomic_store_relaxed(&Precedence, static_cast<uptr>(
          MonotonicNanoTime() >> FIRST_32_SECOND_64(16, 0)));
    return false;
  }

INLINE void lock() {
    atomic_store_relaxed(&Precedence, 0);
    Mutex.Lock();
  }

INLINE void unlock() { Mutex.Unlock(); }

INLINE uptr getPrecedence() { return atomic_load_relaxed(&Precedence); }

private:
  StaticSpinMutex Mutex;
  atomic_uintptr_t Precedence;
};

void initThread(bool MinimalInit);

// TSD model specific fastpath functions definitions.
#include "scudo_tsd_exclusive.inc"
#include "scudo_tsd_shared.inc"

}  // namespace __scudo

#endif  // SCUDO_TSD_H_

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