Package org.gnome.glib

Class Cache

java.lang.Object

io.github.jwharm.javagi.base.ProxyInstance

org.gnome.glib.Cache

All Implemented Interfaces:

Proxy

@Generated("io.github.jwharm.JavaGI")
@Deprecated
public class Cache
extends ProxyInstance

Deprecated.

A GCache allows sharing of complex data structures, in order to save system resources.

GCache uses keys and values. A GCache key describes the properties of a particular resource. A GCache value is the actual resource.

GCache has been marked as deprecated, since this API is rarely used and not very actively maintained.

Constructor Summary

Constructors

Constructor	Description
Cache(MemorySegment address)	Deprecated. Create a Cache proxy instance for the provided memory address.

Method Summary

Modifier and Type	Method	Description
void	destroy()	Deprecated. Use a GHashTable instead
MemorySegment	insert(@Nullable MemorySegment key)	Deprecated. Use a GHashTable instead
void	keyForeach(HFunc func)	Deprecated. Use a GHashTable instead
static Cache	new_(CacheNewFunc valueNewFunc, CacheDestroyFunc valueDestroyFunc, CacheDupFunc keyDupFunc, CacheDestroyFunc keyDestroyFunc, HashFunc hashKeyFunc, HashFunc hashValueFunc, EqualFunc keyEqualFunc)	Deprecated. Use a GHashTable instead
void	remove(@Nullable MemorySegment value)	Deprecated. Use a GHashTable instead
void	valueForeach(HFunc func)	Deprecated. The reason is that it passes pointers to internal data structures to func; use g_cache_key_foreach() instead

Methods inherited from class io.github.jwharm.javagi.base.ProxyInstance

equals, handle, hashCode

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait

Constructor Details

Cache

public Cache(MemorySegment address)

Deprecated.

Create a Cache proxy instance for the provided memory address.

Parameters:

address - the memory address of the native object

Method Details

new_

@Deprecated
public static Cache new_(CacheNewFunc valueNewFunc,
 CacheDestroyFunc valueDestroyFunc,
 CacheDupFunc keyDupFunc,
 CacheDestroyFunc keyDestroyFunc,
 HashFunc hashKeyFunc,
 HashFunc hashValueFunc,
 EqualFunc keyEqualFunc)

Deprecated.

Use a GHashTable instead

Creates a new GCache.

Parameters:

valueNewFunc - a function to create a new object given a key. This is called by g_cache_insert() if an object with the given key does not already exist

valueDestroyFunc - a function to destroy an object. It is called by g_cache_remove() when the object is no longer needed (i.e. its reference count drops to 0)

keyDupFunc - a function to copy a key. It is called by g_cache_insert() if the key does not already exist in the GCache

keyDestroyFunc - a function to destroy a key. It is called by g_cache_remove() when the object is no longer needed (i.e. its reference count drops to 0)

hashKeyFunc - a function to create a hash value from a key

hashValueFunc - a function to create a hash value from a value

keyEqualFunc - a function to compare two keys. It should return true if the two keys are equivalent

Returns:

a new GCache

destroy

@Deprecated
public void destroy()

Deprecated.

Use a GHashTable instead

Frees the memory allocated for the GCache.

Note that it does not destroy the keys and values which were contained in the GCache.

insert

@Deprecated
public MemorySegment insert(@Nullable
 @Nullable MemorySegment key)

Deprecated.

Use a GHashTable instead

Gets the value corresponding to the given key, creating it if necessary. It first checks if the value already exists in the GCache, by using the keyEqualFunc function passed to g_cache_new(). If it does already exist it is returned, and its reference count is increased by one. If the value does not currently exist, if is created by calling the valueNewFunc. The key is duplicated by calling keyDupFunc and the duplicated key and value are inserted into the GCache.

Parameters:

key - a key describing a GCache object

Returns:

a pointer to a GCache value

keyForeach

@Deprecated
public void keyForeach(HFunc func)

Deprecated.

Use a GHashTable instead

Calls the given function for each of the keys in the GCache.

NOTE func is passed three parameters, the value and key of a cache entry and the userData. The order of value and key is different from the order in which g_hash_table_foreach() passes key-value pairs to its callback function !

Parameters:

func - the function to call with each GCache key

remove

@Deprecated
public void remove(@Nullable
 @Nullable MemorySegment value)

Deprecated.

Use a GHashTable instead

Decreases the reference count of the given value. If it drops to 0 then the value and its corresponding key are destroyed, using the valueDestroyFunc and keyDestroyFunc passed to g_cache_new().

Parameters:

value - the value to remove

valueForeach

@Deprecated
public void valueForeach(HFunc func)

Deprecated.

The reason is that it passes pointers to internal data structures to func; use g_cache_key_foreach() instead

Calls the given function for each of the values in the GCache.

Parameters:

func - the function to call with each GCache value