sample-profile.c: Allocation sampling, profiler callbacks.sample-guarded.c: Sampled allocations protected by guard pages.pprof.c: Default heap profiler implementation with stack traces and pprof-compatible text or protobuf snapshots.pprof-os.c: OS specific primitives of the profiler: backtraces, wall-clock time, snapshot files, and loaded modules.pprof-write.c: Writing profiler snapshots in the pprof text or protobuf format.pprof.h: Private declarations shared by the profiler modules.