retired_options Struct Reference

Deferred free list for old options structs. More...

Data Fields
options_t *	value
struct retired_options *	next

Detailed Description

Deferred free list for old options structs.

We can't immediately free old structs because readers might still be using them. Simple strategy: Keep old pointers in a list, free them at shutdown.

Future improvements:

• Hazard pointers: Track which structs readers are using
• Epoch-based reclamation: Free after grace period
• Reference counting: Free when no readers

Current approach: Never free until shutdown (acceptable for rare updates)

Definition at line 300 of file rcu.c.

Field Documentation

next

struct retired_options* retired_options::next

Definition at line 302 of file rcu.c.

Referenced by options_state_set().

value

options_t* retired_options::value

Definition at line 301 of file rcu.c.

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The documentation for this struct was generated from the following file:

• rcu.c