cmd/zed/agents/fmd_serd.h

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License, Version 1.0 only
   6  * (the "License").  You may not use this file except in compliance
   7  * with the License.
   8  *
   9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
  10  * or http://www.opensolaris.org/os/licensing.
  11  * See the License for the specific language governing permissions
  12  * and limitations under the License.
  13  *
  14  * When distributing Covered Code, include this CDDL HEADER in each
  15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  16  * If applicable, add the following below this CDDL HEADER, with the
  17  * fields enclosed by brackets "[]" replaced with your own identifying
  18  * information: Portions Copyright [yyyy] [name of copyright owner]
  19  *
  20  * CDDL HEADER END
  21  */
  22 /*
  23  * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
  24  * Use is subject to license terms.
  25  *
  26  * Copyright (c) 2016, Intel Corporation.
  27  */
  28
  29 #ifndef _FMD_SERD_H
  30 #define _FMD_SERD_H
  31
  32 #ifdef  __cplusplus
  33 extern "C" {
  34 #endif
  35
  36 #include <sys/list.h>
  37 #include <sys/time.h>
  38
  39 typedef struct fmd_serd_elem {
  40         list_node_t     se_list;        /* linked list forward/back pointers */
  41         hrtime_t        se_hrt;         /* upper bound on event hrtime */
  42 } fmd_serd_elem_t;
  43
  44 typedef struct fmd_serd_eng {
  45         char            *sg_name;       /* string name for this engine */
  46         struct fmd_serd_eng *sg_next;   /* next engine on hash chain */
  47         list_t          sg_list;        /* list of fmd_serd_elem_t's */
  48         uint_t          sg_count;       /* count of events in sg_list */
  49         uint_t          sg_flags;       /* engine flags (see below) */
  50         uint_t          sg_n;           /* engine N parameter (event count) */
  51         hrtime_t        sg_t;           /* engine T parameter (nanoseconds) */
  52 } fmd_serd_eng_t;
  53
  54 #define FMD_SERD_FIRED  0x1             /* error rate has exceeded threshold */
  55 #define FMD_SERD_DIRTY  0x2             /* engine needs to be checkpointed */
  56
  57 typedef void fmd_serd_eng_f(fmd_serd_eng_t *, void *);
  58
  59 typedef struct fmd_serd_hash {
  60         fmd_serd_eng_t  **sh_hash;      /* hash bucket array for buffers */
  61         uint_t          sh_hashlen;     /* length of hash bucket array */
  62         uint_t          sh_count;       /* count of engines in hash */
  63 } fmd_serd_hash_t;
  64
  65 extern void fmd_serd_hash_create(fmd_serd_hash_t *);
  66 extern void fmd_serd_hash_destroy(fmd_serd_hash_t *);
  67 extern void fmd_serd_hash_apply(fmd_serd_hash_t *, fmd_serd_eng_f *, void *);
  68
  69 extern fmd_serd_eng_t *fmd_serd_eng_insert(fmd_serd_hash_t *,
  70     const char *, uint32_t, hrtime_t);
  71
  72 extern fmd_serd_eng_t *fmd_serd_eng_lookup(fmd_serd_hash_t *, const char *);
  73 extern void fmd_serd_eng_delete(fmd_serd_hash_t *, const char *);
  74
  75 extern int fmd_serd_eng_record(fmd_serd_eng_t *, hrtime_t);
  76 extern int fmd_serd_eng_fired(fmd_serd_eng_t *);
  77 extern int fmd_serd_eng_empty(fmd_serd_eng_t *);
  78
  79 extern void fmd_serd_eng_reset(fmd_serd_eng_t *);
  80 extern void fmd_serd_eng_gc(fmd_serd_eng_t *);
  81
  82 #ifdef  __cplusplus
  83 }
  84 #endif
  85
  86 #endif  /* _FMD_SERD_H */