Tag
fork
- Mar 19, 2026 Where a Memory Policy Attaches and How It Inherits Policies belong to address ranges and to tasks, not to allocations, and the two interact at every fault; how splitting, forking, and exec change which policy is in force. memory systems
- Mar 13, 2026 Open File Descriptions and the Offsets They Share Three separate kernel objects stand behind a file descriptor, and knowing which one carries the offset explains dup, fork, append mode, and why two opens of one file disagree about position. filesystems
- Oct 24, 2024 fork and exec: Which Descriptors Survive and Why Between fork and exec a child inherits every open descriptor, and only a per-entry flag can prevent it. The inheritance rules, the leak they cause, and the atomicity problems that follow from closing descriptors after the fact. systems programming
- Feb 19, 2024 What fork Copies, and Why Copy-on-Write Defers Almost All of It How the kernel duplicates an address space by sharing page frames read-only, what a write does to break the sharing, and why fork without exec is expensive. operating systems
- Nov 25, 2023 Why fork and exec Are Separate Calls The two-step process creation model, what fork copies and what copy-on-write defers, and why the split survives despite its cost in a program that only wants to exec. computing history