pm-wrapper

Persistent memory allows programs to perform operations on non volatile memory which has lower latency than NAND SSDs. The programmer can interact with this kind of memory via different libraries. Persistent memory access is very often not straightforward compared to regular volatile memory access. pm-wrapper introduces a new programming model for persistent memory. The programmer can implement persistent memory operations with an existing library as backend. An additional layer allows an application to seamlessly adopt and interact with the backend for its persistent memory accesses in a similar fashion with the regular volatile heap memory accesses. This project was part of a bachelor thesis at the Technical University of Munich. You can read more about persistent memory and the design of pm-wrapper in the report itself.

Required dependencies

• make
• cmake
• docker
• clang-13

Build compiler

• Run make build_compiler
• Compiler is located at ./bin/PmWrapperCompiler

Run runtime tests

• Run make build_docker
• Run make run_docker

Run example

• Run make queue
• Run ./bin/queue test-file new 10
• Run ./bin/queue enqueue 20
• Run ./bin/queue show

Compiler interface

• The compiler will generate an object file from the input source file
• Usage: PM_WRAPPER_OUTPUT_PATH=./out/file ./bin/PmWrapperCompiler ./program.c
• Checkout the build command for ./src/compiler/build/queue.o in the makefile

Backends

Currently there are two backend implementations:

• PMDK (https://pmem.io/pmdk/)
• Atlas HP (https://github.com/HewlettPackard/Atlas)

VSCode extension

• Run make build_vscode_extension
• Extension will be located at ./bin/pmwrappersense.vsix
• Run code --install-extension ./bin/pmwrappersense.vsix