hook_themes_disabled in modules/system/theme.api.php

Respond to themes being disabled.

update_cache_clear_submit in modules/update/update.module

Form submission handler for system_modules().

UpdateCoreTestCase::testFetchTasks in modules/update/tests/update.test

Tests that exactly one fetch task per project is created and not more.

update_flush_caches in modules/update/update.module

Implements hook_flush_caches().

_update_process_fetch_task in modules/update/update.fetch.inc

Processes a task to fetch available update data for a single project.

update_project_cache in modules/update/update.compare.inc

Retrieves data from {cache_update} or empties the cache when necessary.

_update_refresh in modules/update/update.fetch.inc

Clears out all the cached available update data and initiates re-fetching.

update_settings_submit in modules/update/update.admin.inc

Form submission handler for update_settings().

update_themes_disabled in modules/update/update.module

Implements hook_themes_disabled().

update_themes_enabled in modules/update/update.module

Implements hook_themes_enabled().