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Diffstat (limited to 'lfqueue/lfqueue.h')
| -rw-r--r-- | lfqueue/lfqueue.h | 84 |
1 files changed, 84 insertions, 0 deletions
diff --git a/lfqueue/lfqueue.h b/lfqueue/lfqueue.h new file mode 100644 index 0000000..1eafc7b --- /dev/null +++ b/lfqueue/lfqueue.h @@ -0,0 +1,84 @@ +/* +* +* BSD 2-Clause License +* +* Copyright (c) 2018, Taymindis Woon +* All rights reserved. +* +* Redistribution and use in source and binary forms, with or without +* modification, are permitted provided that the following conditions are met: +* +* * Redistributions of source code must retain the above copyright notice, this +* list of conditions and the following disclaimer. +* +* * 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 COPYRIGHT HOLDERS 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 COPYRIGHT HOLDER 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 LFQUEUE_H +#define LFQUEUE_H + +#include <stdlib.h> +#include <stdint.h> + +#ifdef __cplusplus +extern "C" { +#endif + +typedef struct lfqueue_cas_node_s lfqueue_cas_node_t; +typedef void* (*lfqueue_malloc_fn)(void*, size_t); +typedef void (*lfqueue_free_fn)(void*, void*); + +#if defined __GNUC__ || defined __CYGWIN__ || defined __MINGW32__ || defined __APPLE__ +#define lfq_bool_t int +#else +#ifdef _WIN64 +#define lfq_bool_t int64_t +#else +#define lfq_bool_t int +#endif +#endif + +typedef struct { + lfqueue_cas_node_t *head, *tail, *root_free, *move_free; + volatile size_t size; + volatile lfq_bool_t in_free_mode; + lfqueue_malloc_fn _malloc; + lfqueue_free_fn _free; + void *pl; +} lfqueue_t; + +extern int lfqueue_init(lfqueue_t *lfqueue); +extern int lfqueue_init_mf(lfqueue_t *lfqueue, void* pl, lfqueue_malloc_fn lfqueue_malloc, lfqueue_free_fn lfqueue_free); +extern int lfqueue_enq(lfqueue_t *lfqueue, void *value); +extern void* lfqueue_deq(lfqueue_t *lfqueue); +extern void* lfqueue_single_deq(lfqueue_t *lfqueue); + +/** loop until value been dequeue, it sleeps 1ms if not found to reduce cpu high usage **/ +extern void* lfqueue_deq_must(lfqueue_t *lfqueue); +extern void* lfqueue_single_deq_must(lfqueue_t *lfqueue); + +extern void lfqueue_destroy(lfqueue_t *lfqueue); +extern size_t lfqueue_size(lfqueue_t *lfqueue); +extern void lfqueue_sleep(unsigned int milisec); + + +#ifdef __cplusplus +} +#endif + +#endif + |