picom/src/cache.h

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#pragma once
struct cache;
typedef void *(*cache_getter_t)(void *user_data, const char *key, int *err);
typedef void (*cache_free_t)(void *user_data, void *data);
struct cache *new_cache(void *user_data, cache_getter_t getter, cache_free_t f);
void *cache_get(struct cache *, const char *key, int *err);
void cache_invalidate(struct cache *, const char *key);
void cache_invalidate_all(struct cache *);
/// Returns the user data passed to `new_cache`
void *cache_free(struct cache *);