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Lines Matching defs:Cache

3  * Module Name: utcache - local cache allocation routines
164  * PARAMETERS:  CacheName       - Ascii name for the cache
166  *              MaxDepth        - Maximum depth of the cache (in objects)
167  *              ReturnCache     - Where the new cache object is returned
171  * DESCRIPTION: Create a cache object
182     ACPI_MEMORY_LIST        *Cache;
193     /* Create the cache object */
195     Cache = AcpiOsAllocate (sizeof (ACPI_MEMORY_LIST));
196     if (!Cache)
201     /* Populate the cache object and return it */
203     memset (Cache, 0, sizeof (ACPI_MEMORY_LIST));
204     Cache->ListName   = __UNCONST(CacheName);
205     Cache->ObjectSize = ObjectSize;
206     Cache->MaxDepth = MaxDepth;
208     *ReturnCache = Cache;
217  * PARAMETERS:  Cache           - Handle to cache object
221  * DESCRIPTION: Free all objects within the requested cache.
227     ACPI_MEMORY_LIST        *Cache)
236     if (!Cache)
247     /* Walk the list of objects in this cache */
249     while (Cache->ListHead)
253         Next = ACPI_GET_DESCRIPTOR_PTR (Cache->ListHead);
254         ACPI_FREE (Cache->ListHead);
256         Cache->ListHead = Next;
257         Cache->CurrentDepth--;
269  * PARAMETERS:  Cache           - Handle to cache object
273  * DESCRIPTION: Free all objects within the requested cache and delete the
274  *              cache object.
280     ACPI_MEMORY_LIST        *Cache)
288    /* Purge all objects in the cache */
290     Status = AcpiOsPurgeCache (Cache);
296     /* Now we can delete the cache object */
298     AcpiOsFree (Cache);
307  * PARAMETERS:  Cache       - Handle to cache object
312  * DESCRIPTION: Release an object to the specified cache. If cache is full,
319     ACPI_MEMORY_LIST        *Cache,
328     if (!Cache || !Object)
333     /* If cache is full, just free this object */
335     if (Cache->CurrentDepth >= Cache->MaxDepth)
338         ACPI_MEM_TRACKING (Cache->TotalFreed++);
341     /* Otherwise put this object back into the cache */
353         memset (Object, 0xCA, Cache->ObjectSize);
356         /* Put the object at the head of the cache list */
358         ACPI_SET_DESCRIPTOR_PTR (Object, Cache->ListHead);
359         Cache->ListHead = Object;
360         Cache->CurrentDepth++;
373  * PARAMETERS:  Cache           - Handle to cache object
377  * DESCRIPTION: Get an object from the specified cache. If cache is empty,
384     ACPI_MEMORY_LIST        *Cache)
393     if (!Cache)
404     ACPI_MEM_TRACKING (Cache->Requests++);
406     /* Check the cache first */
408     if (Cache->ListHead)
412         Object = Cache->ListHead;
413         Cache->ListHead = ACPI_GET_DESCRIPTOR_PTR (Object);
415         Cache->CurrentDepth--;
417         ACPI_MEM_TRACKING (Cache->Hits++);
419             "%s: Object %p from %s cache\n",
420             ACPI_GET_FUNCTION_NAME, Object, Cache->ListName));
430         memset (Object, 0, Cache->ObjectSize);
434         /* The cache is empty, create a new object */
437 	ACPI_MEM_TRACKING (Cache->TotalAllocated++);
439         if ((Cache->TotalAllocated - Cache->TotalFreed) > Cache->MaxOccupied)
441             Cache->MaxOccupied = Cache->TotalAllocated - Cache->TotalFreed;
453         Object = ACPI_ALLOCATE_ZEROED (Cache->ObjectSize);