460   if (base_begin_ == nullptr && base_size_ == 0) {  in ~MemMap()
468         reinterpret_cast<char*>(base_begin_) + base_size_ - redzone_size_,  in ~MemMap()
473     MEMORY_TOOL_MAKE_UNDEFINED(base_begin_, base_size_);  in ~MemMap()
474     int result = munmap(base_begin_, base_size_);  in ~MemMap()
497     : name_(name), begin_(begin), size_(size), base_begin_(base_begin), base_size_(base_size),  in MemMap()
502     CHECK_EQ(base_size_, 0U);  in MemMap()
506     CHECK_NE(base_size_, 0U);  in MemMap()
519   DCHECK_LE(begin_ + size_, reinterpret_cast<uint8_t*>(base_begin_) + base_size_);  in RemapAtEnd()
522   DCHECK_ALIGNED(reinterpret_cast<uint8_t*>(base_begin_) + base_size_, kPageSize);  in RemapAtEnd()
525   uint8_t* old_base_end = reinterpret_cast<uint8_t*>(base_begin_) + base_size_;  in RemapAtEnd()
532   base_size_ = new_base_end - reinterpret_cast<uint8_t*>(base_begin_);  in RemapAtEnd()
533   DCHECK_LE(begin_ + size_, reinterpret_cast<uint8_t*>(base_begin_) + base_size_);  in RemapAtEnd()
583   if (base_begin_ != nullptr || base_size_ != 0) {  in MadviseDontNeedAndZero()
585       memset(base_begin_, 0, base_size_);  in MadviseDontNeedAndZero()
587     int result = madvise(base_begin_, base_size_, MADV_DONTNEED);  in MadviseDontNeedAndZero()
611   if (base_begin_ == nullptr && base_size_ == 0) {  in Protect()
616   if (mprotect(base_begin_, base_size_, prot) == 0) {  in Protect()
621   PLOG(ERROR) << "mprotect(" << reinterpret_cast<void*>(base_begin_) << ", " << base_size_ << ", "  in Protect()
751   if (new_size == base_size_) {  in SetSize()
755   CHECK_EQ(base_size_, size_) << "Unsupported";  in SetSize()
756   CHECK_LE(new_size, base_size_);  in SetSize()
760       base_size_ - new_size);  in SetSize()
762                   base_size_ - new_size), 0) << new_size << " " << base_size_;  in SetSize()
763   base_size_ = new_size;  in SetSize()
901   if (base_begin_ == nullptr && base_size_ == 0) {  in TryReadable()
906   volatile uint8_t* end = begin + base_size_;  in TryReadable()