453a2bdd18
one for each per CPU store): * The depot is now protected by a R/W lock combined with a spinlock. It is required to either hold read lock + spinlock or just the write lock. * When accessing the per CPU stores we only need to acquire the read lock and disable interrupts. When switching magazines with the depot we additionally get the spinlock. * When allocating a new magazine we do completely unlock. git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@35200 a95241bf-73f2-0310-859d-f6bbb57e9c96
48 lines
1.0 KiB
C
48 lines
1.0 KiB
C
/*
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* Copyright 2007, Hugo Santos. All Rights Reserved.
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* Distributed under the terms of the MIT License.
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*/
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#ifndef _SLAB_OBJECT_DEPOT_H_
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#define _SLAB_OBJECT_DEPOT_H_
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#include <lock.h>
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#include <KernelExport.h>
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struct DepotMagazine;
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typedef struct object_depot {
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rw_lock outer_lock;
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spinlock inner_lock;
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DepotMagazine* full;
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DepotMagazine* empty;
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size_t full_count;
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size_t empty_count;
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struct depot_cpu_store* stores;
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void* cookie;
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void (*return_object)(struct object_depot* depot, void* cookie,
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void* object);
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} object_depot;
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#ifdef __cplusplus
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extern "C" {
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#endif
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status_t object_depot_init(object_depot* depot, uint32 flags, void* cookie,
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void (*returnObject)(object_depot* depot, void* cookie, void* object));
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void object_depot_destroy(object_depot* depot);
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void* object_depot_obtain(object_depot* depot);
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int object_depot_store(object_depot* depot, void* object);
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void object_depot_make_empty(object_depot* depot);
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#ifdef __cplusplus
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}
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#endif
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#endif /* _SLAB_OBJECT_DEPOT_H_ */
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