| /* |
| * 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 */ |