include/mimalloc/prim/prim.h: primitive portability API definition.prim.c: This is the portability layer where all primitives needed from the OS are defined. Selects one of unix/prim.c, windows/prim.c, wasi/prim.c, or emscripten/prim.c depending on the host platform (and on macOS, osx/prim.c defers to unix/prim.c).prim-tls.c: primitive TLS model (thread local, pthreads, etc.)os.c: A general higher level API around prim.c that supports OS allocation, (de)commit, huge page allocation, etc.