141 bool MemMap::ContainedWithinExistingMap(uint8_t* ptr, size_t size, std::string* error_msg) {  in ContainedWithinExistingMap()  argument
142   uintptr_t begin = reinterpret_cast<uintptr_t>(ptr);  in ContainedWithinExistingMap()
264 static inline void* TryMemMapLow4GB(void* ptr,  in TryMemMapLow4GB()  argument
270   void* actual = mmap(ptr, page_aligned_byte_count, prot, flags, fd, offset);  in TryMemMapLow4GB()
840     for (uintptr_t ptr = next_mem_pos_; ptr < 4 * GB; ptr += kPageSize) {  in MapInternal()  local
843       auto it = gMaps->upper_bound(reinterpret_cast<void*>(ptr));  in MapInternal()
848         ptr = std::max(ptr, reinterpret_cast<uintptr_t>(before_it->second->BaseEnd()));  in MapInternal()
849         CHECK_ALIGNED(ptr, kPageSize);  in MapInternal()
853         size_t delta = reinterpret_cast<uintptr_t>(it->first) - ptr;  in MapInternal()
859         ptr = reinterpret_cast<uintptr_t>(it->second->BaseEnd());  in MapInternal()
860         CHECK_ALIGNED(ptr, kPageSize);  in MapInternal()
865       actual = TryMemMapLow4GB(reinterpret_cast<void*>(ptr), length, prot, flags, fd, offset);  in MapInternal()
871       if (4U * GB - ptr < length) {  in MapInternal()
875           ptr = LOW_MEM_START - kPageSize;  in MapInternal()
888       for (tail_ptr = ptr; tail_ptr < ptr + length; tail_ptr += kPageSize) {  in MapInternal()
900         actual = TryMemMapLow4GB(reinterpret_cast<void*>(ptr), length, prot, flags, fd, offset);  in MapInternal()
906         ptr = tail_ptr;  in MapInternal()
947   for (volatile uint8_t* ptr = begin; ptr < end; ptr += kPageSize) {  in TryReadable()  local
949     uint8_t value = *ptr;  in TryReadable()