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some object cache / slab improvements.

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- call the reclaimer callback when low on memory.
 - use the depot when on multi-cpu setups (for scalability).
 - fixed the amount of memory spent on slabs for very large objects.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@20889 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Hugo Santos
2007-04-28 21:35:23 +00:00
parent 2842773aa5
commit 6e31ae98f9
3 changed files with 134 additions and 74 deletions
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headers/private/kernel/slab/Base.h
+1 -1
View File
@@ -30,7 +30,7 @@ typedef struct object_cache object_cache;
typedef status_t (*object_cache_constructor)(void *cookie, void *object);
typedef void (*object_cache_destructor)(void *cookie, void *object);
typedef void (*object_cache_reclaimer)(void *cookie, void *object);
typedef void (*object_cache_reclaimer)(void *cookie, int32 level);
object_cache *create_object_cache(const char *name, size_t object_size,
size_t alignment, void *cookie, object_cache_constructor constructor,
headers/private/kernel/slab/Depot.h
+10 -24
View File
@@ -9,45 +9,31 @@
#ifndef _SLAB_DEPOT_H_
#define _SLAB_DEPOT_H_
#include <stdint.h>
#include <lock.h>
#include <smp.h>
#include <KernelExport.h>
#ifdef __cplusplus
extern "C" {
#endif
typedef struct base_depot {
typedef struct object_depot {
benaphore lock;
struct depot_magazine *full, *empty;
size_t full_count, empty_count;
struct depot_cpu_store *stores;
void (*return_object)(struct base_depot *depot, void *object);
} base_depot;
void (*return_object)(struct object_depot *depot, void *object);
} object_depot;
typedef struct depot_cpu_store {
benaphore lock;
struct depot_magazine *loaded, *previous;
} depot_cpu_store;
status_t object_depot_init(object_depot *depot,
void (*return_object)(object_depot *, void *));
void object_depot_destroy(object_depot *depot);
void *object_depot_obtain(object_depot *depot);
int object_depot_store(object_depot *depot, void *object);
static inline depot_cpu_store *
base_depot_cpu(base_depot *depot)
{
return &depot->stores[smp_get_current_cpu()];
}
status_t base_depot_init(base_depot *depot,
void (*return_object)(base_depot *, void *));
void base_depot_destroy(base_depot *depot);
void *base_depot_obtain_from_store(base_depot *depot, depot_cpu_store *store);
int base_depot_return_to_store(base_depot *depot, depot_cpu_store *store,
void *object);
void base_depot_make_empty(base_depot *depot);
void object_depot_make_empty(object_depot *depot);
#ifdef __cplusplus
}