High-level resource cache interface. More...

#include "utils/errors.h"
#include "utils/nsurl.h"
#include "content/content.h"
#include "content/llcache.h"

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Data Structures
struct	hlcache_child_context
	Context for retrieving a child object. More...

struct	hlcache_event
	High-level cache event. More...

struct	hlcache_parameters

Typedefs
typedef struct hlcache_handle	hlcache_handle
	High-level cache handle. More...

typedef struct hlcache_child_context	hlcache_child_context
	Context for retrieving a child object. More...

typedef struct hlcache_event	hlcache_event
	High-level cache event. More...

typedef nserror(*	hlcache_handle_callback) (hlcache_handle handle, const hlcache_event event, void *pw)
	Client callback for high-level cache events. More...

Enumerations
enum	hlcache_retrieve_flag { HLCACHE_RETRIEVE_MAY_DOWNLOAD = (1 << 31) , HLCACHE_RETRIEVE_SNIFF_TYPE = (1 << 30) }
	Flags for high-level cache object retrieval. More...

Functions
nserror	hlcache_initialise (const struct hlcache_parameters *hlcache_parameters)
	Initialise the high-level cache, preparing the llcache also. More...

void	hlcache_stop (void)
	Stop the high-level cache periodic functionality so that the exit sequence can run. More...

void	hlcache_finalise (void)
	Finalise the high-level cache, destroying any remaining contents. More...

nserror	hlcache_handle_retrieve (nsurl url, uint32_t flags, nsurl referer, llcache_post_data post, hlcache_handle_callback cb, void pw, hlcache_child_context child, content_type accepted_types, hlcache_handle *result)
	Retrieve a high-level cache handle for an object. More...

nserror	hlcache_handle_release (hlcache_handle *handle)
	Release a high-level cache handle. More...

nserror	hlcache_handle_abort (hlcache_handle *handle)
	Abort a high-level cache fetch. More...

nserror	hlcache_handle_replace_callback (hlcache_handle handle, hlcache_handle_callback cb, void pw)
	Replace a high-level cache handle's callback. More...

struct content *	hlcache_handle_get_content (const hlcache_handle *handle)
	Retrieve a content object from a cache handle. More...

nserror	hlcache_handle_clone (hlcache_handle handle, hlcache_handle *result)
	Clone a high level cache handle. More...

Detailed Description

High-level resource cache interface.

Definition in file hlcache.h.

Typedef Documentation

◆ hlcache_child_context

typedef struct hlcache_child_context hlcache_child_context

Context for retrieving a child object.

◆ hlcache_event

typedef struct hlcache_event hlcache_event

High-level cache event.

◆ hlcache_handle

typedef struct hlcache_handle hlcache_handle

High-level cache handle.

Definition at line 34 of file hlcache.h.

◆ hlcache_handle_callback

typedef nserror(* hlcache_handle_callback) (hlcache_handle *handle, const hlcache_event *event, void *pw)

Client callback for high-level cache events.

Parameters

handle	Handle to object generating event
event	Event data
pw	Pointer to client-specific data

Returns: NSERROR_OK on success, appropriate error otherwise.

Definition at line 63 of file hlcache.h.

Enumeration Type Documentation

◆ hlcache_retrieve_flag

enum hlcache_retrieve_flag

Flags for high-level cache object retrieval.

Enumerator
HLCACHE_RETRIEVE_MAY_DOWNLOAD	It's permitted to convert this request into a download.
HLCACHE_RETRIEVE_SNIFF_TYPE

Definition at line 67 of file hlcache.h.

Function Documentation

◆ hlcache_finalise()

void hlcache_finalise ( void )

Finalise the high-level cache, destroying any remaining contents.

Definition at line 584 of file hlcache.c.

References hlcache_child_context::charset, hlcache_retrieval_ctx::child, hlcache_entry::content, content_count_users(), hlcache_s::content_list, guit, hlcache_retrieval_ctx::handle, hlcache_s::hit_count, hlcache, hlcache_clean(), hlcache_handle_get_url(), hlcache_retrieval_ctx::llcache, llcache_finalise(), llcache_handle_release(), netsurf_table::misc, hlcache_s::miss_count, hlcache_entry::next, NSLOG, nsurl_access(), hlcache_retrieval_ctx::r_next, hlcache_s::retrieval_ctx_ring, and gui_misc_table::schedule.

Referenced by netsurf_exit().

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◆ hlcache_handle_abort()

nserror hlcache_handle_abort ( hlcache_handle * handle )

Abort a high-level cache fetch.

Parameters

handle Handle to abort

Returns: NSERROR_OK on success, appropriate error otherwise

Definition at line 786 of file hlcache.c.

References hlcache_entry::content, content_abort(), content_add_user(), content_clone(), content_count_users(), content_destroy(), hlcache_s::content_list, content_remove_user(), hlcache_handle::entry, hlcache, hlcache_content_callback(), llcache_handle_abort(), llcache_handle_release(), hlcache_entry::next, NSERROR_NOMEM, NSERROR_OK, hlcache_entry::prev, hlcache_s::retrieval_ctx_ring, RING_ITERATE_END, RING_ITERATE_START, RING_ITERATE_STOP, and RING_REMOVE.

Referenced by browser_window_destroy_internal(), browser_window_stop(), html_css_process_modified_style(), and html_object_abort_objects().

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◆ hlcache_handle_clone()

nserror hlcache_handle_clone	(	hlcache_handle *	handle,
		hlcache_handle **	result
	)

Clone a high level cache handle.

Parameters

handle	The handle to clone.
result	The cloned handle.

Returns: NSERROR_OK on success, appropriate error otherwise

Definition at line 869 of file hlcache.c.

References NSERROR_CLONE_FAILED, and result.

Referenced by print_init().

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◆ hlcache_handle_get_content()

struct content * hlcache_handle_get_content ( const hlcache_handle * handle )

Retrieve a content object from a cache handle.

Parameters

handle Cache handle to dereference

Returns: Pointer to content object, or NULL if there is none

Todo:: This may not be correct. Ideally, the client should never need to directly access a content object. It may, therefore, be better to provide a bunch of veneers here that take a hlcache_handle and invoke the corresponding content_ API. If there's no content object associated with the hlcache_handle (e.g. because the source data is still being fetched, so it doesn't exist yet), then these veneers would behave as a NOP. The important thing being that the client need not care about this possibility and can just call the functions with impugnity.

Definition at line 776 of file hlcache.c.

References hlcache_entry::content, and hlcache_handle::entry.

Referenced by browser_window_callback(), content_can_reformat(), content_clear_selection(), content_close(), content_debug(), content_debug_dump(), content_drop_file_at_point(), content_exec(), content_find_rfc5988_link(), content_get_available_width(), content_get_bitmap(), content_get_contextual_content(), content_get_encoding(), content_get_height(), content_get_mime_type(), content_get_opaque(), content_get_quirks(), content_get_refresh_url(), content_get_selection(), content_get_source_data(), content_get_status(), content_get_status_message(), content_get_title(), content_get_type(), content_get_width(), content_invalidate_reuse_data(), content_is_locked(), content_keypress(), content_mouse_action(), content_mouse_track(), content_open(), content_redraw(), content_reformat(), content_request_redraw(), content_saw_insecure_objects(), content_scaled_redraw(), content_scroll_at_point(), content_textsearch(), content_textsearch_clear(), html_get_base_target(), html_get_base_url(), html_get_box_tree(), html_get_document(), html_get_frameset(), html_get_iframe(), html_get_objects(), html_get_stylesheets(), html_set_file_gadget_filename(), nscss_content_done(), nscss_get_imports(), nscss_get_stylesheet(), nscss_register_import(), and save_complete_ctx_has_content().

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◆ hlcache_handle_release()

nserror hlcache_handle_release ( hlcache_handle * handle )

Release a high-level cache handle.

Parameters

handle Handle to release

Returns: NSERROR_OK on success, appropriate error otherwise

Definition at line 740 of file hlcache.c.

References hlcache_handle::cb, hlcache_entry::content, content_remove_user(), hlcache_handle::entry, hlcache, hlcache_content_callback(), llcache_handle_abort(), llcache_handle_release(), NSERROR_OK, hlcache_handle::pw, hlcache_s::retrieval_ctx_ring, RING_ITERATE_END, RING_ITERATE_START, RING_ITERATE_STOP, and RING_REMOVE.

Referenced by browser_window__handle_error(), browser_window_content_ready(), browser_window_convert_to_download(), browser_window_destroy_internal(), browser_window_favicon_callback(), browser_window_stop(), convert_script_async_cb(), convert_script_defer_cb(), convert_script_sync_cb(), default_ico_callback(), html_convert_css_callback(), html_css_free_stylesheets(), html_css_process_modified_style(), html_object_abort_objects(), html_object_callback(), html_object_free_objects(), html_object_nobox_callback(), html_replace_object(), html_script_free(), nscss_destroy_css_data(), nscss_import(), print_cleanup(), ro_gui_url_bar_fini(), search_web_finalise(), search_web_ico_callback(), theme_install_close(), and treeview_fini().

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◆ hlcache_handle_replace_callback()

nserror hlcache_handle_replace_callback	(	hlcache_handle *	handle,
		hlcache_handle_callback	cb,
		void *	pw
	)

Replace a high-level cache handle's callback.

Parameters

handle	Handle to replace callback of
cb	New callback routine
pw	Private data for callback

Returns: NSERROR_OK on success, appropriate error otherwise

Definition at line 860 of file hlcache.c.

References hlcache_handle::cb, NSERROR_OK, and hlcache_handle::pw.

Referenced by theme_install_start().

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◆ hlcache_handle_retrieve()

nserror hlcache_handle_retrieve	(	nsurl *	url,
		uint32_t	flags,
		nsurl *	referer,
		llcache_post_data *	post,
		hlcache_handle_callback	cb,
		void *	pw,
		hlcache_child_context *	child,
		content_type	accepted_types,
		hlcache_handle **	result
	)

Retrieve a high-level cache handle for an object.

Parameters

url	URL of the object to retrieve handle for
flags	Object retrieval flags
referer	Referring URL, or NULL if none
post	POST data, or NULL for a GET request
cb	Callback to handle object events
pw	Pointer to client-specific data for callback
child	Child retrieval context, or NULL for top-level content
accepted_types	Bitmap of acceptable content types
result	Pointer to location to recieve cache handle

Returns: NSERROR_OK on success, appropriate error otherwise

Child contents are keyed on the tuple < URL, quirks >. The quirks field is ignored for child contents whose behaviour is not affected by quirks mode.

Todo:: The above rules should be encoded in the handler_map.

Todo:: Is there any way to sensibly reduce the number of parameters here?

Definition at line 679 of file hlcache.c.

References hlcache_retrieval_ctx::accepted_types, hlcache_handle::cb, hlcache_child_context::charset, hlcache_retrieval_ctx::child, hlcache_retrieval_ctx::flags, hlcache_retrieval_ctx::handle, hlcache, hlcache_llcache_callback(), hlcache_retrieval_ctx::llcache, llcache_handle_retrieve(), NSERROR_NOMEM, NSERROR_OK, hlcache_handle::pw, hlcache_child_context::quirks, result, hlcache_s::retrieval_ctx_ring, and RING_INSERT.

Referenced by browser_window_favicon_callback(), browser_window_update_favicon(), exec_src_script(), html_css_new_stylesheets(), html_css_process_link(), html_css_quirks_stylesheets(), html_fetch_object(), html_replace_object(), html_stylesheet_from_domnode(), navigate_internal_real(), nscss_handle_import(), ro_gui_url_bar_init(), search_web_init(), search_web_select_provider(), and treeview_init_resources().

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◆ hlcache_initialise()

nserror hlcache_initialise ( const struct hlcache_parameters * hlcache_parameters )

Initialise the high-level cache, preparing the llcache also.

Parameters

hlcache_parameters Settings to initialise cache with

Returns: NSERROR_OK on success, appropriate error otherwise.

Definition at line 552 of file hlcache.c.

References hlcache_parameters::bg_clean_time, guit, hlcache, hlcache_clean(), hlcache_parameters::llcache, llcache_initialise(), netsurf_table::misc, NSERROR_NOMEM, NSERROR_OK, hlcache_s::params, and gui_misc_table::schedule.

Referenced by netsurf_init().

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◆ hlcache_stop()

void hlcache_stop ( void )

Stop the high-level cache periodic functionality so that the exit sequence can run.

Definition at line 577 of file hlcache.c.

References guit, hlcache_clean(), netsurf_table::misc, and gui_misc_table::schedule.

Referenced by netsurf_exit().

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Data Structures

Typedefs

Enumerations

Functions

Detailed Description

Typedef Documentation

◆ hlcache_child_context

◆ hlcache_event

◆ hlcache_handle

◆ hlcache_handle_callback

Enumeration Type Documentation

◆ hlcache_retrieve_flag

Function Documentation

◆ hlcache_finalise()

◆ hlcache_handle_abort()

◆ hlcache_handle_clone()

◆ hlcache_handle_get_content()

◆ hlcache_handle_release()

◆ hlcache_handle_replace_callback()

◆ hlcache_handle_retrieve()

◆ hlcache_initialise()

◆ hlcache_stop()