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/*
* 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 */
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