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| <a href="#glib-Caches.synopsis" class="shortcut">Top</a> |
| | |
| <a href="#glib-Caches.description" class="shortcut">Description</a> |
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| <div class="refentry" title="Caches"> |
| <a name="glib-Caches"></a><div class="titlepage"></div> |
| <div class="refnamediv"><table width="100%"><tr> |
| <td valign="top"> |
| <h2><span class="refentrytitle"><a name="glib-Caches.top_of_page"></a>Caches</span></h2> |
| <p>Caches — caches allow sharing of complex data structures |
| to save resources</p> |
| </td> |
| <td valign="top" align="right"></td> |
| </tr></table></div> |
| <div class="refsynopsisdiv" title="Synopsis"> |
| <a name="glib-Caches.synopsis"></a><h2>Synopsis</h2> |
| <pre class="synopsis"> |
| #include <glib.h> |
| |
| <a class="link" href="glib-Caches.html#GCache" title="GCache">GCache</a>; |
| <a class="link" href="glib-Caches.html#GCache" title="GCache"><span class="returnvalue">GCache</span></a>* <a class="link" href="glib-Caches.html#g-cache-new" title="g_cache_new ()">g_cache_new</a> (<em class="parameter"><code><a class="link" href="glib-Caches.html#GCacheNewFunc" title="GCacheNewFunc ()"><span class="type">GCacheNewFunc</span></a> value_new_func</code></em>, |
| <em class="parameter"><code><a class="link" href="glib-Caches.html#GCacheDestroyFunc" title="GCacheDestroyFunc ()"><span class="type">GCacheDestroyFunc</span></a> value_destroy_func</code></em>, |
| <em class="parameter"><code><a class="link" href="glib-Caches.html#GCacheDupFunc" title="GCacheDupFunc ()"><span class="type">GCacheDupFunc</span></a> key_dup_func</code></em>, |
| <em class="parameter"><code><a class="link" href="glib-Caches.html#GCacheDestroyFunc" title="GCacheDestroyFunc ()"><span class="type">GCacheDestroyFunc</span></a> key_destroy_func</code></em>, |
| <em class="parameter"><code><a class="link" href="glib-Hash-Tables.html#GHashFunc" title="GHashFunc ()"><span class="type">GHashFunc</span></a> hash_key_func</code></em>, |
| <em class="parameter"><code><a class="link" href="glib-Hash-Tables.html#GHashFunc" title="GHashFunc ()"><span class="type">GHashFunc</span></a> hash_value_func</code></em>, |
| <em class="parameter"><code><a class="link" href="glib-Hash-Tables.html#GEqualFunc" title="GEqualFunc ()"><span class="type">GEqualFunc</span></a> key_equal_func</code></em>); |
| <a class="link" href="glib-Basic-Types.html#gpointer" title="gpointer"><span class="returnvalue">gpointer</span></a> <a class="link" href="glib-Caches.html#g-cache-insert" title="g_cache_insert ()">g_cache_insert</a> (<em class="parameter"><code><a class="link" href="glib-Caches.html#GCache" title="GCache"><span class="type">GCache</span></a> *cache</code></em>, |
| <em class="parameter"><code><a class="link" href="glib-Basic-Types.html#gpointer" title="gpointer"><span class="type">gpointer</span></a> key</code></em>); |
| <span class="returnvalue">void</span> <a class="link" href="glib-Caches.html#g-cache-remove" title="g_cache_remove ()">g_cache_remove</a> (<em class="parameter"><code><a class="link" href="glib-Caches.html#GCache" title="GCache"><span class="type">GCache</span></a> *cache</code></em>, |
| <em class="parameter"><code><a class="link" href="glib-Basic-Types.html#gconstpointer" title="gconstpointer"><span class="type">gconstpointer</span></a> value</code></em>); |
| <span class="returnvalue">void</span> <a class="link" href="glib-Caches.html#g-cache-destroy" title="g_cache_destroy ()">g_cache_destroy</a> (<em class="parameter"><code><a class="link" href="glib-Caches.html#GCache" title="GCache"><span class="type">GCache</span></a> *cache</code></em>); |
| |
| <span class="returnvalue">void</span> <a class="link" href="glib-Caches.html#g-cache-key-foreach" title="g_cache_key_foreach ()">g_cache_key_foreach</a> (<em class="parameter"><code><a class="link" href="glib-Caches.html#GCache" title="GCache"><span class="type">GCache</span></a> *cache</code></em>, |
| <em class="parameter"><code><a class="link" href="glib-Hash-Tables.html#GHFunc" title="GHFunc ()"><span class="type">GHFunc</span></a> func</code></em>, |
| <em class="parameter"><code><a class="link" href="glib-Basic-Types.html#gpointer" title="gpointer"><span class="type">gpointer</span></a> user_data</code></em>); |
| <span class="returnvalue">void</span> <a class="link" href="glib-Caches.html#g-cache-value-foreach" title="g_cache_value_foreach ()">g_cache_value_foreach</a> (<em class="parameter"><code><a class="link" href="glib-Caches.html#GCache" title="GCache"><span class="type">GCache</span></a> *cache</code></em>, |
| <em class="parameter"><code><a class="link" href="glib-Hash-Tables.html#GHFunc" title="GHFunc ()"><span class="type">GHFunc</span></a> func</code></em>, |
| <em class="parameter"><code><a class="link" href="glib-Basic-Types.html#gpointer" title="gpointer"><span class="type">gpointer</span></a> user_data</code></em>); |
| |
| <span class="returnvalue">void</span> (<a class="link" href="glib-Caches.html#GCacheDestroyFunc" title="GCacheDestroyFunc ()">*GCacheDestroyFunc</a>) (<em class="parameter"><code><a class="link" href="glib-Basic-Types.html#gpointer" title="gpointer"><span class="type">gpointer</span></a> value</code></em>); |
| <a class="link" href="glib-Basic-Types.html#gpointer" title="gpointer"><span class="returnvalue">gpointer</span></a> (<a class="link" href="glib-Caches.html#GCacheDupFunc" title="GCacheDupFunc ()">*GCacheDupFunc</a>) (<em class="parameter"><code><a class="link" href="glib-Basic-Types.html#gpointer" title="gpointer"><span class="type">gpointer</span></a> value</code></em>); |
| <a class="link" href="glib-Basic-Types.html#gpointer" title="gpointer"><span class="returnvalue">gpointer</span></a> (<a class="link" href="glib-Caches.html#GCacheNewFunc" title="GCacheNewFunc ()">*GCacheNewFunc</a>) (<em class="parameter"><code><a class="link" href="glib-Basic-Types.html#gpointer" title="gpointer"><span class="type">gpointer</span></a> key</code></em>); |
| </pre> |
| </div> |
| <div class="refsect1" title="Description"> |
| <a name="glib-Caches.description"></a><h2>Description</h2> |
| <p> |
| A <a class="link" href="glib-Caches.html#GCache" title="GCache"><span class="type">GCache</span></a> allows sharing of complex data structures, in order to |
| save system resources. |
| </p> |
| <p> |
| GTK+ uses caches for <a href="http://library.gnome.org/devel/gtk/unstable/GtkStyle.html"><span class="type">GtkStyles</span></a> and <a href="http://library.gnome.org/devel/gdk/unstable/gdk-Graphics-Contexts.html#GdkGC"><span class="type">GdkGCs</span></a>. These consume a lot of |
| resources, so a <a class="link" href="glib-Caches.html#GCache" title="GCache"><span class="type">GCache</span></a> is used to see if a <a href="http://library.gnome.org/devel/gtk/unstable/GtkStyle.html"><span class="type">GtkStyle</span></a> or <a href="http://library.gnome.org/devel/gdk/unstable/gdk-Graphics-Contexts.html#GdkGC"><span class="type">GdkGC</span></a> with |
| the required properties already exists. If it does, then the |
| existing object is used instead of creating a new one. |
| </p> |
| <p> |
| <a class="link" href="glib-Caches.html#GCache" title="GCache"><span class="type">GCache</span></a> uses keys and values. A <a class="link" href="glib-Caches.html#GCache" title="GCache"><span class="type">GCache</span></a> key describes the properties |
| of a particular resource. A <a class="link" href="glib-Caches.html#GCache" title="GCache"><span class="type">GCache</span></a> value is the actual resource. |
| </p> |
| </div> |
| <div class="refsect1" title="Details"> |
| <a name="glib-Caches.details"></a><h2>Details</h2> |
| <div class="refsect2" title="GCache"> |
| <a name="GCache"></a><h3>GCache</h3> |
| <pre class="programlisting">typedef struct _GCache GCache;</pre> |
| <p> |
| The <a class="link" href="glib-Caches.html#GCache" title="GCache"><span class="type">GCache</span></a> struct is an opaque data structure containing |
| information about a <a class="link" href="glib-Caches.html#GCache" title="GCache"><span class="type">GCache</span></a>. It should only be accessed via the |
| following functions. |
| </p> |
| </div> |
| <hr> |
| <div class="refsect2" title="g_cache_new ()"> |
| <a name="g-cache-new"></a><h3>g_cache_new ()</h3> |
| <pre class="programlisting"><a class="link" href="glib-Caches.html#GCache" title="GCache"><span class="returnvalue">GCache</span></a>* g_cache_new (<em class="parameter"><code><a class="link" href="glib-Caches.html#GCacheNewFunc" title="GCacheNewFunc ()"><span class="type">GCacheNewFunc</span></a> value_new_func</code></em>, |
| <em class="parameter"><code><a class="link" href="glib-Caches.html#GCacheDestroyFunc" title="GCacheDestroyFunc ()"><span class="type">GCacheDestroyFunc</span></a> value_destroy_func</code></em>, |
| <em class="parameter"><code><a class="link" href="glib-Caches.html#GCacheDupFunc" title="GCacheDupFunc ()"><span class="type">GCacheDupFunc</span></a> key_dup_func</code></em>, |
| <em class="parameter"><code><a class="link" href="glib-Caches.html#GCacheDestroyFunc" title="GCacheDestroyFunc ()"><span class="type">GCacheDestroyFunc</span></a> key_destroy_func</code></em>, |
| <em class="parameter"><code><a class="link" href="glib-Hash-Tables.html#GHashFunc" title="GHashFunc ()"><span class="type">GHashFunc</span></a> hash_key_func</code></em>, |
| <em class="parameter"><code><a class="link" href="glib-Hash-Tables.html#GHashFunc" title="GHashFunc ()"><span class="type">GHashFunc</span></a> hash_value_func</code></em>, |
| <em class="parameter"><code><a class="link" href="glib-Hash-Tables.html#GEqualFunc" title="GEqualFunc ()"><span class="type">GEqualFunc</span></a> key_equal_func</code></em>);</pre> |
| <p> |
| Creates a new <a class="link" href="glib-Caches.html#GCache" title="GCache"><span class="type">GCache</span></a>. |
| </p> |
| <div class="variablelist"><table border="0"> |
| <col align="left" valign="top"> |
| <tbody> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>value_new_func</code></em> :</span></p></td> |
| <td>a function to create a new object given a key. |
| This is called by <a class="link" href="glib-Caches.html#g-cache-insert" title="g_cache_insert ()"><code class="function">g_cache_insert()</code></a> if an object |
| with the given key does not already exist. |
| </td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>value_destroy_func</code></em> :</span></p></td> |
| <td>a function to destroy an object. It is called |
| by <a class="link" href="glib-Caches.html#g-cache-remove" title="g_cache_remove ()"><code class="function">g_cache_remove()</code></a> when the object is no |
| longer needed (i.e. its reference count drops |
| to 0). |
| </td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>key_dup_func</code></em> :</span></p></td> |
| <td>a function to copy a key. It is called by |
| <a class="link" href="glib-Caches.html#g-cache-insert" title="g_cache_insert ()"><code class="function">g_cache_insert()</code></a> if the key does not already exist in |
| the <a class="link" href="glib-Caches.html#GCache" title="GCache"><span class="type">GCache</span></a>. |
| </td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>key_destroy_func</code></em> :</span></p></td> |
| <td>a function to destroy a key. It is called by |
| <a class="link" href="glib-Caches.html#g-cache-remove" title="g_cache_remove ()"><code class="function">g_cache_remove()</code></a> when the object is no longer |
| needed (i.e. its reference count drops to 0). |
| </td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>hash_key_func</code></em> :</span></p></td> |
| <td>a function to create a hash value from a key. |
| </td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>hash_value_func</code></em> :</span></p></td> |
| <td>a function to create a hash value from a value. |
| </td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>key_equal_func</code></em> :</span></p></td> |
| <td>a function to compare two keys. It should return |
| <a class="link" href="glib-Standard-Macros.html#TRUE:CAPS" title="TRUE"><code class="literal">TRUE</code></a> if the two keys are equivalent. |
| </td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td> |
| <td>a new <a class="link" href="glib-Caches.html#GCache" title="GCache"><span class="type">GCache</span></a>. |
| </td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| <hr> |
| <div class="refsect2" title="g_cache_insert ()"> |
| <a name="g-cache-insert"></a><h3>g_cache_insert ()</h3> |
| <pre class="programlisting"><a class="link" href="glib-Basic-Types.html#gpointer" title="gpointer"><span class="returnvalue">gpointer</span></a> g_cache_insert (<em class="parameter"><code><a class="link" href="glib-Caches.html#GCache" title="GCache"><span class="type">GCache</span></a> *cache</code></em>, |
| <em class="parameter"><code><a class="link" href="glib-Basic-Types.html#gpointer" title="gpointer"><span class="type">gpointer</span></a> key</code></em>);</pre> |
| <p> |
| Gets the value corresponding to the given key, creating it if |
| necessary. It first checks if the value already exists in the |
| <a class="link" href="glib-Caches.html#GCache" title="GCache"><span class="type">GCache</span></a>, by using the <em class="parameter"><code>key_equal_func</code></em> function passed to |
| <a class="link" href="glib-Caches.html#g-cache-new" title="g_cache_new ()"><code class="function">g_cache_new()</code></a>. 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 <em class="parameter"><code>value_new_func</code></em>. The key is |
| duplicated by calling <em class="parameter"><code>key_dup_func</code></em> and the duplicated key and value |
| are inserted into the <a class="link" href="glib-Caches.html#GCache" title="GCache"><span class="type">GCache</span></a>. |
| </p> |
| <div class="variablelist"><table border="0"> |
| <col align="left" valign="top"> |
| <tbody> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>cache</code></em> :</span></p></td> |
| <td>a <a class="link" href="glib-Caches.html#GCache" title="GCache"><span class="type">GCache</span></a>. |
| </td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>key</code></em> :</span></p></td> |
| <td>a key describing a <a class="link" href="glib-Caches.html#GCache" title="GCache"><span class="type">GCache</span></a> object. |
| </td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td> |
| <td>a pointer to a <a class="link" href="glib-Caches.html#GCache" title="GCache"><span class="type">GCache</span></a> value. |
| </td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| <hr> |
| <div class="refsect2" title="g_cache_remove ()"> |
| <a name="g-cache-remove"></a><h3>g_cache_remove ()</h3> |
| <pre class="programlisting"><span class="returnvalue">void</span> g_cache_remove (<em class="parameter"><code><a class="link" href="glib-Caches.html#GCache" title="GCache"><span class="type">GCache</span></a> *cache</code></em>, |
| <em class="parameter"><code><a class="link" href="glib-Basic-Types.html#gconstpointer" title="gconstpointer"><span class="type">gconstpointer</span></a> value</code></em>);</pre> |
| <p> |
| Decreases the reference count of the given value. If it drops to 0 |
| then the value and its corresponding key are destroyed, using the |
| <em class="parameter"><code>value_destroy_func</code></em> and <em class="parameter"><code>key_destroy_func</code></em> passed to <a class="link" href="glib-Caches.html#g-cache-new" title="g_cache_new ()"><code class="function">g_cache_new()</code></a>. |
| </p> |
| <div class="variablelist"><table border="0"> |
| <col align="left" valign="top"> |
| <tbody> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>cache</code></em> :</span></p></td> |
| <td>a <a class="link" href="glib-Caches.html#GCache" title="GCache"><span class="type">GCache</span></a>. |
| </td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>value</code></em> :</span></p></td> |
| <td>the value to remove. |
| </td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| <hr> |
| <div class="refsect2" title="g_cache_destroy ()"> |
| <a name="g-cache-destroy"></a><h3>g_cache_destroy ()</h3> |
| <pre class="programlisting"><span class="returnvalue">void</span> g_cache_destroy (<em class="parameter"><code><a class="link" href="glib-Caches.html#GCache" title="GCache"><span class="type">GCache</span></a> *cache</code></em>);</pre> |
| <p> |
| Frees the memory allocated for the <a class="link" href="glib-Caches.html#GCache" title="GCache"><span class="type">GCache</span></a>. |
| </p> |
| <p> |
| Note that it does not destroy the keys and values which were |
| contained in the <a class="link" href="glib-Caches.html#GCache" title="GCache"><span class="type">GCache</span></a>. |
| </p> |
| <div class="variablelist"><table border="0"> |
| <col align="left" valign="top"> |
| <tbody><tr> |
| <td><p><span class="term"><em class="parameter"><code>cache</code></em> :</span></p></td> |
| <td>a <a class="link" href="glib-Caches.html#GCache" title="GCache"><span class="type">GCache</span></a>. |
| </td> |
| </tr></tbody> |
| </table></div> |
| </div> |
| <hr> |
| <div class="refsect2" title="g_cache_key_foreach ()"> |
| <a name="g-cache-key-foreach"></a><h3>g_cache_key_foreach ()</h3> |
| <pre class="programlisting"><span class="returnvalue">void</span> g_cache_key_foreach (<em class="parameter"><code><a class="link" href="glib-Caches.html#GCache" title="GCache"><span class="type">GCache</span></a> *cache</code></em>, |
| <em class="parameter"><code><a class="link" href="glib-Hash-Tables.html#GHFunc" title="GHFunc ()"><span class="type">GHFunc</span></a> func</code></em>, |
| <em class="parameter"><code><a class="link" href="glib-Basic-Types.html#gpointer" title="gpointer"><span class="type">gpointer</span></a> user_data</code></em>);</pre> |
| <p> |
| Calls the given function for each of the keys in the <a class="link" href="glib-Caches.html#GCache" title="GCache"><span class="type">GCache</span></a>. |
| </p> |
| <p> |
| NOTE <em class="parameter"><code>func</code></em> is passed three parameters, the value and key of a cache |
| entry and the <em class="parameter"><code>user_data</code></em>. The order of value and key is different |
| from the order in which <a class="link" href="glib-Hash-Tables.html#g-hash-table-foreach" title="g_hash_table_foreach ()"><code class="function">g_hash_table_foreach()</code></a> passes key-value |
| pairs to its callback function ! |
| </p> |
| <div class="variablelist"><table border="0"> |
| <col align="left" valign="top"> |
| <tbody> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>cache</code></em> :</span></p></td> |
| <td>a <a class="link" href="glib-Caches.html#GCache" title="GCache"><span class="type">GCache</span></a>. |
| </td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>func</code></em> :</span></p></td> |
| <td>the function to call with each <a class="link" href="glib-Caches.html#GCache" title="GCache"><span class="type">GCache</span></a> key. |
| </td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>user_data</code></em> :</span></p></td> |
| <td>user data to pass to the function. |
| </td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| <hr> |
| <div class="refsect2" title="g_cache_value_foreach ()"> |
| <a name="g-cache-value-foreach"></a><h3>g_cache_value_foreach ()</h3> |
| <pre class="programlisting"><span class="returnvalue">void</span> g_cache_value_foreach (<em class="parameter"><code><a class="link" href="glib-Caches.html#GCache" title="GCache"><span class="type">GCache</span></a> *cache</code></em>, |
| <em class="parameter"><code><a class="link" href="glib-Hash-Tables.html#GHFunc" title="GHFunc ()"><span class="type">GHFunc</span></a> func</code></em>, |
| <em class="parameter"><code><a class="link" href="glib-Basic-Types.html#gpointer" title="gpointer"><span class="type">gpointer</span></a> user_data</code></em>);</pre> |
| <div class="warning" title="Warning" style="margin-left: 0.5in; margin-right: 0.5in;"> |
| <h3 class="title">Warning</h3> |
| <p><code class="literal">g_cache_value_foreach</code> has been deprecated since version 2.10 and should not be used in newly-written code. The reason is that it passes pointers to internal |
| data structures to <em class="parameter"><code>func</code></em>; use <a class="link" href="glib-Caches.html#g-cache-key-foreach" title="g_cache_key_foreach ()"><code class="function">g_cache_key_foreach()</code></a> |
| instead</p> |
| </div> |
| <p> |
| Calls the given function for each of the values in the <a class="link" href="glib-Caches.html#GCache" title="GCache"><span class="type">GCache</span></a>. |
| </p> |
| <div class="variablelist"><table border="0"> |
| <col align="left" valign="top"> |
| <tbody> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>cache</code></em> :</span></p></td> |
| <td>a <a class="link" href="glib-Caches.html#GCache" title="GCache"><span class="type">GCache</span></a>. |
| </td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>func</code></em> :</span></p></td> |
| <td>the function to call with each <a class="link" href="glib-Caches.html#GCache" title="GCache"><span class="type">GCache</span></a> value. |
| </td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>user_data</code></em> :</span></p></td> |
| <td>user data to pass to the function. |
| </td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| <hr> |
| <div class="refsect2" title="GCacheDestroyFunc ()"> |
| <a name="GCacheDestroyFunc"></a><h3>GCacheDestroyFunc ()</h3> |
| <pre class="programlisting"><span class="returnvalue">void</span> (*GCacheDestroyFunc) (<em class="parameter"><code><a class="link" href="glib-Basic-Types.html#gpointer" title="gpointer"><span class="type">gpointer</span></a> value</code></em>);</pre> |
| <p> |
| Specifies the type of the <em class="parameter"><code>value_destroy_func</code></em> and <em class="parameter"><code>key_destroy_func</code></em> |
| functions passed to <a class="link" href="glib-Caches.html#g-cache-new" title="g_cache_new ()"><code class="function">g_cache_new()</code></a>. The functions are passed a |
| pointer to the <a class="link" href="glib-Caches.html#GCache" title="GCache"><span class="type">GCache</span></a> key or <a class="link" href="glib-Caches.html#GCache" title="GCache"><span class="type">GCache</span></a> value and should free any |
| memory and other resources associated with it. |
| </p> |
| <div class="variablelist"><table border="0"> |
| <col align="left" valign="top"> |
| <tbody><tr> |
| <td><p><span class="term"><em class="parameter"><code>value</code></em> :</span></p></td> |
| <td>the <a class="link" href="glib-Caches.html#GCache" title="GCache"><span class="type">GCache</span></a> value to destroy. |
| </td> |
| </tr></tbody> |
| </table></div> |
| </div> |
| <hr> |
| <div class="refsect2" title="GCacheDupFunc ()"> |
| <a name="GCacheDupFunc"></a><h3>GCacheDupFunc ()</h3> |
| <pre class="programlisting"><a class="link" href="glib-Basic-Types.html#gpointer" title="gpointer"><span class="returnvalue">gpointer</span></a> (*GCacheDupFunc) (<em class="parameter"><code><a class="link" href="glib-Basic-Types.html#gpointer" title="gpointer"><span class="type">gpointer</span></a> value</code></em>);</pre> |
| <p> |
| Specifies the type of the <em class="parameter"><code>key_dup_func</code></em> function passed to |
| <a class="link" href="glib-Caches.html#g-cache-new" title="g_cache_new ()"><code class="function">g_cache_new()</code></a>. The function is passed a key |
| (<span class="emphasis"><em>not</em></span> a value as the prototype implies) and |
| should return a duplicate of the key. |
| </p> |
| <div class="variablelist"><table border="0"> |
| <col align="left" valign="top"> |
| <tbody> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>value</code></em> :</span></p></td> |
| <td>the <a class="link" href="glib-Caches.html#GCache" title="GCache"><span class="type">GCache</span></a> key to destroy (<span class="emphasis"><em>not</em></span> a |
| <a class="link" href="glib-Caches.html#GCache" title="GCache"><span class="type">GCache</span></a> value as it seems). |
| </td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td> |
| <td>a copy of the <a class="link" href="glib-Caches.html#GCache" title="GCache"><span class="type">GCache</span></a> key. |
| </td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| <hr> |
| <div class="refsect2" title="GCacheNewFunc ()"> |
| <a name="GCacheNewFunc"></a><h3>GCacheNewFunc ()</h3> |
| <pre class="programlisting"><a class="link" href="glib-Basic-Types.html#gpointer" title="gpointer"><span class="returnvalue">gpointer</span></a> (*GCacheNewFunc) (<em class="parameter"><code><a class="link" href="glib-Basic-Types.html#gpointer" title="gpointer"><span class="type">gpointer</span></a> key</code></em>);</pre> |
| <p> |
| Specifies the type of the <em class="parameter"><code>value_new_func</code></em> function passed to |
| <a class="link" href="glib-Caches.html#g-cache-new" title="g_cache_new ()"><code class="function">g_cache_new()</code></a>. It is passed a <a class="link" href="glib-Caches.html#GCache" title="GCache"><span class="type">GCache</span></a> key and should create the |
| value corresponding to the key. |
| </p> |
| <div class="variablelist"><table border="0"> |
| <col align="left" valign="top"> |
| <tbody> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>key</code></em> :</span></p></td> |
| <td>a <a class="link" href="glib-Caches.html#GCache" title="GCache"><span class="type">GCache</span></a> key. |
| </td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td> |
| <td>a new <a class="link" href="glib-Caches.html#GCache" title="GCache"><span class="type">GCache</span></a> value corresponding to the key. |
| </td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| </div> |
| </div> |
| <div class="footer"> |
| <hr> |
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