summaryrefslogtreecommitdiffstats
path: root/xlators/performance/io-threads/src/io-threads.h
blob: a6b640884d031ab3068927a81e45923d9148a8cf (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
/*
  Copyright (c) 2008-2012 Red Hat, Inc. <http://www.redhat.com>
  This file is part of GlusterFS.

  This file is licensed to you under your choice of the GNU Lesser
  General Public License, version 3 or any later version (LGPLv3 or
  later), or the GNU General Public License, version 2 (GPLv2), in all
  cases as published by the Free Software Foundation.
*/

#ifndef __IOT_H
#define __IOT_H

#ifndef _CONFIG_H
#define _CONFIG_H
#include "config.h"
#endif


#include "compat-errno.h"
#include "glusterfs.h"
#include "logging.h"
#include "dict.h"
#include "xlator.h"
#include "common-utils.h"
#include "list.h"
#include <stdlib.h>
#include "locking.h"
#include "iot-mem-types.h"
#include <semaphore.h>
#include "statedump.h"


struct iot_conf;

#define MAX_IDLE_SKEW                   4       /* In secs */
#define skew_sec_idle_time(sec)         ((sec) + (random () % MAX_IDLE_SKEW))
#define IOT_DEFAULT_IDLE                120     /* In secs. */

#define IOT_MIN_THREADS         1
#define IOT_DEFAULT_THREADS     16
#define IOT_MAX_THREADS         64


#define IOT_THREAD_STACK_SIZE   ((size_t)(1024*1024))


typedef enum {
        IOT_PRI_HI = 0, /* low latency */
        IOT_PRI_NORMAL, /* normal */
        IOT_PRI_LO,     /* bulk */
        IOT_PRI_LEAST,  /* least */
        IOT_PRI_MAX,
} iot_pri_t;


struct iot_conf {
        pthread_mutex_t      mutex;
        pthread_cond_t       cond;

        int32_t              max_count;   /* configured maximum */
        int32_t              curr_count;  /* actual number of threads running */
        int32_t              sleep_count;

        int32_t              idle_time;   /* in seconds */

        struct list_head     reqs[IOT_PRI_MAX];

        int32_t              ac_iot_limit[IOT_PRI_MAX];
        int32_t              ac_iot_count[IOT_PRI_MAX];
        int                  queue_sizes[IOT_PRI_MAX];
        int                  queue_size;
        pthread_attr_t       w_attr;
        gf_boolean_t         least_priority; /*Enable/Disable least-priority */

        xlator_t            *this;
        size_t              stack_size;
};

typedef struct iot_conf iot_conf_t;

#endif /* __IOT_H */