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Data-ReqRep-Shared-0.04

Changes for version 0.04 - 2026-05-27

  • slot_acquire: owner_pid CAS gates the state CAS, ACQUIRE on loads (fixes recovery ABA where a fresh free+acquire could clobber a live owner)
  • reply: re-check generation before publishing CAS and recover post-CAS via gen bump (fixes TOCTOU where cancel+re-acquire could let a reply land on the wrong owner's slot)
  • slot_release: two-step CAS (owner_pid mypid→0, then state from→FREE) prevents blind state-store from clobbering a freshly-acquired slot
  • compute_layout: resp_stride in uint64 (was wrapping for resp_data_max near UINT32_MAX → replies overflowing into next slot)
  • validate_header: reject files with resp_stride too small for slot data
  • size(): read head before tail and clamp tail<head to 0
  • plug mmap/fd leak in create_int / create_int_memfd on calloc OOM

Modules

Data::ReqRep::Shared
High-performance shared-memory request/response IPC for Linux
Data::ReqRep::Shared::Client
client-side handle for the Str request/reply channel

Provides

Data::ReqRep::Shared::Int
in lib/Data/ReqRep/Shared/Int.pm
Data::ReqRep::Shared::Int::Client
in lib/Data/ReqRep/Shared/Int/Client.pm

Examples

Other files