File: bytemap.h

package info (click to toggle)
llvm-toolchain-15 1%3A15.0.6-4
  • links: PTS, VCS
  • area: main
  • in suites: bookworm
  • size: 1,554,644 kB
  • sloc: cpp: 5,922,452; ansic: 1,012,136; asm: 674,362; python: 191,568; objc: 73,855; f90: 42,327; lisp: 31,913; pascal: 11,973; javascript: 10,144; sh: 9,421; perl: 7,447; ml: 5,527; awk: 3,523; makefile: 2,520; xml: 885; cs: 573; fortran: 567
file content (43 lines) | stat: -rw-r--r-- 991 bytes parent folder | download | duplicates (23) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
 
//===-- bytemap.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
//
//===----------------------------------------------------------------------===//

#ifndef SCUDO_BYTEMAP_H_
#define SCUDO_BYTEMAP_H_

#include "atomic_helpers.h"
#include "common.h"
#include "mutex.h"

namespace scudo {

template <uptr Size> class FlatByteMap {
public:
  void init() { DCHECK(Size == 0 || Map[0] == 0); }

  void unmapTestOnly() { memset(Map, 0, Size); }

  void set(uptr Index, u8 Value) {
    DCHECK_LT(Index, Size);
    DCHECK_EQ(0U, Map[Index]);
    Map[Index] = Value;
  }
  u8 operator[](uptr Index) {
    DCHECK_LT(Index, Size);
    return Map[Index];
  }

  void disable() {}
  void enable() {}

private:
  u8 Map[Size] = {};
};

} // namespace scudo

#endif // SCUDO_BYTEMAP_H_