| //===-- sanitizer_common.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. |
| // It declares common functions and classes that are used in both runtimes. |
| // Implementation of some functions are provided in sanitizer_common, while |
| // others must be defined by run-time library itself. |
| //===----------------------------------------------------------------------===// |
| #ifndef SANITIZER_COMMON_H |
| #define SANITIZER_COMMON_H |
| |
| #include "sanitizer_internal_defs.h" |
| |
| namespace __sanitizer { |
| |
| // Constants. |
| const uptr kWordSize = __WORDSIZE / 8; |
| const uptr kWordSizeInBits = 8 * kWordSize; |
| const uptr kPageSizeBits = 12; |
| const uptr kPageSize = 1UL << kPageSizeBits; |
| |
| // Threads |
| int GetPid(); |
| void GetThreadStackTopAndBottom(bool at_initialization, uptr *stack_top, |
| uptr *stack_bottom); |
| |
| // Memory management |
| void *MmapOrDie(uptr size, const char *mem_type); |
| void UnmapOrDie(void *addr, uptr size); |
| void *MmapFixedNoReserve(uptr fixed_addr, uptr size); |
| void *Mprotect(uptr fixed_addr, uptr size); |
| |
| // Internal allocator |
| void *InternalAlloc(uptr size); |
| void InternalFree(void *addr); |
| |
| // IO |
| void RawWrite(const char *buffer); |
| void Printf(const char *format, ...); |
| int SNPrintf(char *buffer, uptr length, const char *format, ...); |
| void Report(const char *format, ...); |
| |
| // Opens the file 'file_name" and reads up to 'max_len' bytes. |
| // The resulting buffer is mmaped and stored in '*buff'. |
| // The size of the mmaped region is stored in '*buff_size', |
| // Returns the number of read bytes or 0 if file can not be opened. |
| uptr ReadFileToBuffer(const char *file_name, char **buff, |
| uptr *buff_size, uptr max_len); |
| const char *GetEnv(const char *name); |
| |
| // Other |
| void DisableCoreDumper(); |
| void DumpProcessMap(); |
| |
| // Bit twiddling. |
| inline bool IsPowerOfTwo(uptr x) { |
| return (x & (x - 1)) == 0; |
| } |
| inline uptr RoundUpTo(uptr size, uptr boundary) { |
| // FIXME: Use CHECK here. |
| RAW_CHECK(IsPowerOfTwo(boundary)); |
| return (size + boundary - 1) & ~(boundary - 1); |
| } |
| |
| #if __WORDSIZE == 64 |
| # define FIRST_32_SECOND_64(a, b) (b) |
| #else |
| # define FIRST_32_SECOND_64(a, b) (a) |
| #endif |
| |
| } // namespace __sanitizer |
| |
| #endif // SANITIZER_COMMON_H |