sanitizer_common.h revision a25b3463477d2a825df4f656001fc07c594b35ac 
1//===-- sanitizer_common.h --------------------------------------*- C++ -*-===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9//
10// This file is shared between AddressSanitizer and ThreadSanitizer
11// run-time libraries.
12// It declares common functions and classes that are used in both runtimes.
13// Implementation of some functions are provided in sanitizer_common, while
14// others must be defined by run-time library itself.
15//===----------------------------------------------------------------------===//
16#ifndef SANITIZER_COMMON_H
17#define SANITIZER_COMMON_H
18
19#include "sanitizer_internal_defs.h"
20
21namespace __sanitizer {
22
23// Constants.
24const uptr kWordSize = __WORDSIZE / 8;
25const uptr kWordSizeInBits = 8 * kWordSize;
26const uptr kPageSizeBits = 12;
27const uptr kPageSize = 1UL << kPageSizeBits;
28
29int GetPid();
30void RawWrite(const char *buffer);
31
32// Memory management
33void *MmapOrDie(uptr size, const char *mem_type);
34void UnmapOrDie(void *addr, uptr size);
35
36void Printf(const char *format, ...);
37int SNPrintf(char *buffer, uptr length, const char *format, ...);
38void Report(const char *format, ...);
39
40// Bit twiddling.
41inline bool IsPowerOfTwo(uptr x) {
42  return (x & (x - 1)) == 0;
43}
44inline uptr RoundUpTo(uptr size, uptr boundary) {
45  // FIXME: Use CHECK here.
46  RAW_CHECK(IsPowerOfTwo(boundary));
47  return (size + boundary - 1) & ~(boundary - 1);
48}
49
50}  // namespace __sanitizer
51
52#endif  // SANITIZER_COMMON_H
53