FreeBSD/Linux Kernel Cross Reference
sys/contrib/openzfs/cmd/zed/agents/fmd_serd.h

     /*
      * CDDL HEADER START
      *
      * The contents of this file are subject to the terms of the
      * Common Development and Distribution License, Version 1.0 only
      * (the "License").  You may not use this file except in compliance
      * with the License.
      *
      * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
     * or https://opensource.org/licenses/CDDL-1.0.
     * See the License for the specific language governing permissions
     * and limitations under the License.
     *
     * When distributing Covered Code, include this CDDL HEADER in each
     * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
     * If applicable, add the following below this CDDL HEADER, with the
     * fields enclosed by brackets "[]" replaced with your own identifying
     * information: Portions Copyright [yyyy] [name of copyright owner]
     *
     * CDDL HEADER END
     */
    /*
     * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
     * Use is subject to license terms.
     *
     * Copyright (c) 2016, Intel Corporation.
     */
    
    #ifndef _FMD_SERD_H
    #define _FMD_SERD_H
    
    #ifdef  __cplusplus
    extern "C" {
    #endif
    
    #include <sys/list.h>
    #include <sys/time.h>
    
    typedef struct fmd_serd_elem {
            list_node_t     se_list;        /* linked list forward/back pointers */
            hrtime_t        se_hrt;         /* upper bound on event hrtime */
    } fmd_serd_elem_t;
    
    typedef struct fmd_serd_eng {
            char            *sg_name;       /* string name for this engine */
            struct fmd_serd_eng *sg_next;   /* next engine on hash chain */
            list_t          sg_list;        /* list of fmd_serd_elem_t's */
            uint_t          sg_count;       /* count of events in sg_list */
            uint_t          sg_flags;       /* engine flags (see below) */
            uint_t          sg_n;           /* engine N parameter (event count) */
            hrtime_t        sg_t;           /* engine T parameter (nanoseconds) */
    } fmd_serd_eng_t;
    
    #define FMD_SERD_FIRED  0x1             /* error rate has exceeded threshold */
    #define FMD_SERD_DIRTY  0x2             /* engine needs to be checkpointed */
    
    typedef void fmd_serd_eng_f(fmd_serd_eng_t *, void *);
    
    typedef struct fmd_serd_hash {
            fmd_serd_eng_t  **sh_hash;      /* hash bucket array for buffers */
            uint_t          sh_hashlen;     /* length of hash bucket array */
            uint_t          sh_count;       /* count of engines in hash */
    } fmd_serd_hash_t;
    
    extern void fmd_serd_hash_create(fmd_serd_hash_t *);
    extern void fmd_serd_hash_destroy(fmd_serd_hash_t *);
    extern void fmd_serd_hash_apply(fmd_serd_hash_t *, fmd_serd_eng_f *, void *);
    
    extern fmd_serd_eng_t *fmd_serd_eng_insert(fmd_serd_hash_t *,
        const char *, uint32_t, hrtime_t);
    
    extern fmd_serd_eng_t *fmd_serd_eng_lookup(fmd_serd_hash_t *, const char *);
    extern void fmd_serd_eng_delete(fmd_serd_hash_t *, const char *);
    
    extern int fmd_serd_eng_record(fmd_serd_eng_t *, hrtime_t);
    extern int fmd_serd_eng_fired(fmd_serd_eng_t *);
    extern int fmd_serd_eng_empty(fmd_serd_eng_t *);
    
    extern void fmd_serd_eng_reset(fmd_serd_eng_t *);
    extern void fmd_serd_eng_gc(fmd_serd_eng_t *);
    
    #ifdef  __cplusplus
    }
    #endif
    
    #endif  /* _FMD_SERD_H */

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