pkgconf/doc/libpkgconf-cache.rst

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libpkgconf `cache` module
=========================
The libpkgconf `cache` module manages a package/module object cache, allowing it to
avoid loading duplicate copies of a package/module.
A cache is tied to a specific pkgconf client object, so package objects should not
be shared across threads.
.. c:function:: pkgconf_pkg_t *pkgconf_cache_lookup(const pkgconf_client_t *client, const char *id)
Looks up a package in the cache given an `id` atom,
such as ``gtk+-3.0`` and returns the already loaded version
if present.
:param pkgconf_client_t* client: The client object to access.
:param char* id: The package atom to look up in the client object's cache.
:return: A package object if present, else ``NULL``.
:rtype: pkgconf_pkg_t *
.. c:function:: void pkgconf_cache_add(pkgconf_client_t *client, pkgconf_pkg_t *pkg)
Adds an entry for the package to the package cache.
The cache entry must be removed if the package is freed.
:param pkgconf_client_t* client: The client object to modify.
:param pkgconf_pkg_t* pkg: The package object to add to the client object's cache.
:return: nothing
.. c:function:: void pkgconf_cache_remove(pkgconf_client_t *client, pkgconf_pkg_t *pkg)
Deletes a package from the client object's package cache.
:param pkgconf_client_t* client: The client object to modify.
:param pkgconf_pkg_t* pkg: The package object to remove from the client object's cache.
:return: nothing
.. c:function:: void pkgconf_cache_free(pkgconf_client_t *client)
Releases all resources related to a client object's package cache.
This function should only be called to clear a client object's package cache,
as it may release any package in the cache.
:param pkgconf_client_t* client: The client object to modify.