This project memory maps a file to memory and accesses it to perform different operations, as needed. Serves as a replacement for a subset of the std::fstream class from the C++ standard template library.

#mmap_fstream.h : Header file that holds declarations and comments about functionality of each function #mmap_fstream.cc : Source file that holds implementation for all functions in the corresponding header file

(a) The file is memory mapped in mmap_fstream.cc on line 85: 85- file_contentGlobal = static_cast<char*>(mmap(nullptr, mapped_size, PROT_FLAGS, MAP_SHARED, fd, 0));

(b) The file is ftruncated in mmap_fstream.cc on line 155: 155- if(ftruncate(fd, mapped_size) == -1){

(c) The file is read from a memory map in mmap_fstream.cc on line 137: 137- *line += file_contentGlobal[cursor];

(d) The file is written to using a memory map in mmap_fstream.cc on line 160: 160- file_contentGlobal[mapped_size-1] = c;

(e) The file is saved to disk using a memory map in mmap_fstream.cc on line 166: 166- if(msync(file_contentGlobal, mapped_size, MS_SYNC) < 0) {