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Diffstat (limited to 'include/ck_array.h')
| -rw-r--r-- | include/ck_array.h | 100 |
1 files changed, 100 insertions, 0 deletions
diff --git a/include/ck_array.h b/include/ck_array.h new file mode 100644 index 0000000..9cb97b2 --- /dev/null +++ b/include/ck_array.h @@ -0,0 +1,100 @@ +/* + * 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 */ |