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CacheEntry Struct Reference

Single hash entry in the in-memory cache. More...

`#include <aaruformat/lru.h>`

## Data Fields

char * | key
| Null-terminated key string (unique within the cache). May encode numeric keys.
void * | value
| Opaque value pointer associated with key (not freed automatically on eviction/clear).
UT_hash_handle | hh
| uthash handle linking this entry into the hash table (must remain last or per uthash docs).

## Detailed Description

Single hash entry in the in-memory cache.

This structure is managed by uthash (open addressing with chaining semantics provided by macros). It represents one key/value association tracked by the cache. The cache implementation supports both string keys (null-terminated) and 64-bit numeric keys; numeric keys are stored by casting to a temporary string buffer upstream (see implementation). Callers do not allocate or free individual entries directly; use the cache API helpers.

Lifetime & ownership:

- key points either to a heap-allocated C string owned by the cache or to a short-lived buffer duplicated internally; callers must not free it after insertion.
- value is an opaque pointer supplied by caller; the cache does not take ownership of the pointee (caller remains responsible for the underlying object unless documented otherwise).

Definition at line 26 of file lru.h.

## Field Documentation

## hh

UT_hash_handle CacheEntry::hh

uthash handle linking this entry into the hash table (must remain last or per uthash docs).

Definition at line 30 of file lru.h.

Referenced by add_to_cache(), find_in_cache(), and free_cache().

## key

char* CacheEntry::key

Null-terminated key string (unique within the cache). May encode numeric keys.

Definition at line 28 of file lru.h.

Referenced by add_to_cache(), add_to_cache_uint64(), find_in_cache(), find_in_cache_uint64(), and free_cache().

## value

void* CacheEntry::value

Opaque value pointer associated with key (not freed automatically on eviction/clear).

Definition at line 29 of file lru.h.

Referenced by add_to_cache(), add_to_cache_uint64(), find_in_cache(), and free_cache().

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

- include/aaruformat/lru.h