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lib
librte_timer
rte_timer.h
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/*-
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* BSD LICENSE
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*
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* Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of Intel Corporation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _RTE_TIMER_H_
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#define _RTE_TIMER_H_
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#include <stdio.h>
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#include <stdint.h>
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#include <stddef.h>
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#ifdef __cplusplus
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extern
"C"
{
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#endif
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#define RTE_TIMER_STOP 0
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#define RTE_TIMER_PENDING 1
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#define RTE_TIMER_RUNNING 2
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#define RTE_TIMER_CONFIG 3
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#define RTE_TIMER_NO_OWNER -2
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enum rte_timer_type {
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SINGLE,
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PERIODICAL
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};
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union
rte_timer_status
{
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struct
{
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uint16_t
state
;
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int16_t
owner
;
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};
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uint32_t
u32
;
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};
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#ifdef RTE_LIBRTE_TIMER_DEBUG
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struct
rte_timer_debug_stats {
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uint64_t reset;
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uint64_t stop;
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uint64_t manage;
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uint64_t pending;
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};
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#endif
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struct
rte_timer
;
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typedef
void (*
rte_timer_cb_t
)(
struct
rte_timer
*,
void
*);
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#define MAX_SKIPLIST_DEPTH 10
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struct
rte_timer
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{
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uint64_t
expire
;
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struct
rte_timer
*sl_next[MAX_SKIPLIST_DEPTH];
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volatile
union
rte_timer_status
status
;
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uint64_t
period
;
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rte_timer_cb_t
f
;
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void
*
arg
;
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};
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#ifdef __cplusplus
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#define RTE_TIMER_INITIALIZER { \
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0, \
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{NULL}, \
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{{RTE_TIMER_STOP, RTE_TIMER_NO_OWNER}}, \
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0, \
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NULL, \
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NULL, \
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}
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#else
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#define RTE_TIMER_INITIALIZER { \
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.status = {{ \
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.state = RTE_TIMER_STOP, \
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.owner = RTE_TIMER_NO_OWNER, \
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}}, \
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}
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#endif
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void
rte_timer_subsystem_init
(
void
);
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void
rte_timer_init
(
struct
rte_timer
*tim);
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int
rte_timer_reset
(
struct
rte_timer
*tim, uint64_t ticks,
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enum
rte_timer_type
type,
unsigned
tim_lcore,
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rte_timer_cb_t
fct,
void
*arg);
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void
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rte_timer_reset_sync
(
struct
rte_timer
*tim, uint64_t ticks,
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enum
rte_timer_type
type,
unsigned
tim_lcore,
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rte_timer_cb_t
fct,
void
*arg);
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int
rte_timer_stop
(
struct
rte_timer
*tim);
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void
rte_timer_stop_sync
(
struct
rte_timer
*tim);
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int
rte_timer_pending
(
struct
rte_timer
*tim);
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void
rte_timer_manage
(
void
);
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void
rte_timer_dump_stats
(FILE *f);
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#ifdef __cplusplus
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}
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#endif
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#endif
/* _RTE_TIMER_H_ */
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