c311430119
CK is a toolkit providing different lockfree algorithms/data structures. More information can be found here : www.concurrencykit.org
101 lines
3.1 KiB
C
101 lines
3.1 KiB
C
/*
|
|
* Copyright 2013-2015 Samy Al Bahra
|
|
* Copyright 2013-2014 AppNexus, Inc.
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*/
|
|
|
|
#ifndef CK_ARRAY_H
|
|
#define CK_ARRAY_H
|
|
|
|
#include <ck_cc.h>
|
|
#include <ck_malloc.h>
|
|
#include <ck_pr.h>
|
|
#include <ck_stdbool.h>
|
|
#include <ck_stddef.h>
|
|
|
|
struct _ck_array {
|
|
unsigned int n_committed;
|
|
unsigned int length;
|
|
void *values[];
|
|
};
|
|
|
|
struct ck_array {
|
|
struct ck_malloc *allocator;
|
|
struct _ck_array *active;
|
|
unsigned int n_entries;
|
|
struct _ck_array *transaction;
|
|
};
|
|
typedef struct ck_array ck_array_t;
|
|
|
|
struct ck_array_iterator {
|
|
struct _ck_array *snapshot;
|
|
};
|
|
typedef struct ck_array_iterator ck_array_iterator_t;
|
|
|
|
#define CK_ARRAY_MODE_SPMC 0U
|
|
#define CK_ARRAY_MODE_MPMC (void) /* Unsupported. */
|
|
|
|
bool ck_array_init(ck_array_t *, unsigned int, struct ck_malloc *, unsigned int);
|
|
bool ck_array_commit(ck_array_t *);
|
|
bool ck_array_put(ck_array_t *, void *);
|
|
int ck_array_put_unique(ck_array_t *, void *);
|
|
bool ck_array_remove(ck_array_t *, void *);
|
|
void ck_array_deinit(ck_array_t *, bool);
|
|
|
|
CK_CC_INLINE static unsigned int
|
|
ck_array_length(struct ck_array *array)
|
|
{
|
|
struct _ck_array *a = ck_pr_load_ptr(&array->active);
|
|
|
|
ck_pr_fence_load();
|
|
return ck_pr_load_uint(&a->n_committed);
|
|
}
|
|
|
|
CK_CC_INLINE static void *
|
|
ck_array_buffer(struct ck_array *array, unsigned int *length)
|
|
{
|
|
struct _ck_array *a = ck_pr_load_ptr(&array->active);
|
|
|
|
ck_pr_fence_load();
|
|
*length = ck_pr_load_uint(&a->n_committed);
|
|
return a->values;
|
|
}
|
|
|
|
CK_CC_INLINE static bool
|
|
ck_array_initialized(struct ck_array *array)
|
|
{
|
|
|
|
return ck_pr_load_ptr(&array->active) != NULL;
|
|
}
|
|
|
|
#define CK_ARRAY_FOREACH(a, i, b) \
|
|
(i)->snapshot = ck_pr_load_ptr(&(a)->active); \
|
|
ck_pr_fence_load(); \
|
|
for (unsigned int _ck_i = 0; \
|
|
_ck_i < (a)->active->n_committed && \
|
|
((*b) = (a)->active->values[_ck_i], 1); \
|
|
_ck_i++)
|
|
|
|
#endif /* CK_ARRAY_H */
|