mirror of
https://github.com/RfidResearchGroup/proxmark3.git
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118 lines
3.0 KiB
C
118 lines
3.0 KiB
C
/****************************************************************************
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Author : Gabriele 'matrix' Gristina <gabriele.gristina@gmail.com>
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Date : Sun Jan 10 13:59:37 CET 2021
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Version: 0.1beta
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License: GNU General Public License v3 or any later version (see LICENSE.txt)
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*****************************************************************************
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Copyright (C) 2020-2021 <Gabriele Gristina>
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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****************************************************************************/
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#ifndef QUEUE_H
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#define QUEUE_H
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// set 1 to enable the test unit
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#ifndef TEST_UNIT
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#define TEST_UNIT 0
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#endif
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#if TEST_UNIT == 1
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#include <stdio.h>
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#include <unistd.h>
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#include <errno.h>
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#endif
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#include <stdlib.h>
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#include <stddef.h>
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#include <string.h>
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#include <pthread.h>
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// enum errors
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typedef enum wu_queue_error {
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QUEUE_EMPTY = 1,
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NO_ERROR = 0,
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ERROR_GENERIC = -1,
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ERROR_QUEUE_TYPE_INVALID = -2,
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ERROR_CTX_NULL = -3,
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ERROR_CTX_IS_INIT = -4,
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ERROR_CTX_IS_NOT_INIT = -5,
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ERROR_MUTEXATTR_INIT = -6,
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ERROR_MUTEXATTR_SETTYPE = -7,
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ERROR_MUTEX_INIT = -8,
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ERROR_ALLOC = -9,
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ERROR_UNDEFINED = -10
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} wu_queue_error_t;
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// enum queue types
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typedef enum wu_queue_type {
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QUEUE_TYPE_FORWARD = 0,
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QUEUE_TYPE_REVERSE,
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QUEUE_TYPE_RANDOM
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} wu_queue_type_t;
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// hold wu data
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typedef struct wu_queue_data {
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size_t id;
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size_t off;
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size_t max;
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size_t rem;
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} wu_queue_data_t;
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// lists
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typedef struct wu_queue_item wu_queue_item_t;
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struct wu_queue_item {
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wu_queue_data_t data;
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wu_queue_item_t *next;
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wu_queue_item_t *prev;
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};
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// main ctx
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typedef struct wu_queue_ctx {
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unsigned int init;
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wu_queue_type_t queue_type;
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wu_queue_item_t *queue_head;
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wu_queue_item_t *queue_tail;
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size_t queue_size;
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// mutex
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pthread_mutexattr_t queue_mutex_attr;
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unsigned char pad1[4];
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pthread_mutex_t queue_mutex;
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} wu_queue_ctx_t;
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// exports
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int wu_queue_init(wu_queue_ctx_t *ctx, wu_queue_type_t queue_type);
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int wu_queue_done(wu_queue_ctx_t *ctx);
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int wu_queue_push(wu_queue_ctx_t *ctx, size_t id, size_t off, size_t max);
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int wu_queue_pop(wu_queue_ctx_t *ctx, wu_queue_data_t *wu, short remove);
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int wu_queue_destroy(wu_queue_ctx_t *ctx);
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const char *wu_queue_strdesc(wu_queue_type_t type);
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const char *wu_queue_strerror(int error);
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#if TEST_UNIT == 1
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int wu_queue_print(wu_queue_ctx_t *ctx);
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#endif
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#endif // QUEUE_H
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