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3748 zfs headers should be C++ compatible
Submitted by:   Justin Gibbs <justing@spectralogic.com>
Submitted by:   Will Andrews <willa@spectralogic.com>
Reviewed by:    Matthew Ahrens <mahrens@delphix.com>


  21 /*
  22  * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
  23  * Copyright (c) 2012 by Delphix. All rights reserved.
  24  */
  25 
  26 #ifndef _SYS_ARC_H
  27 #define _SYS_ARC_H
  28 
  29 #include <sys/zfs_context.h>
  30 
  31 #ifdef  __cplusplus
  32 extern "C" {
  33 #endif
  34 
  35 #include <sys/zio.h>
  36 #include <sys/dmu.h>
  37 #include <sys/spa.h>
  38 
  39 typedef struct arc_buf_hdr arc_buf_hdr_t;
  40 typedef struct arc_buf arc_buf_t;
  41 typedef void arc_done_func_t(zio_t *zio, arc_buf_t *buf, void *private);
  42 typedef int arc_evict_func_t(void *private);
  43 
  44 /* generic arc_done_func_t's which you can use */
  45 arc_done_func_t arc_bcopy_func;
  46 arc_done_func_t arc_getbuf_func;
  47 
  48 struct arc_buf {
  49         arc_buf_hdr_t           *b_hdr;
  50         arc_buf_t               *b_next;
  51         kmutex_t                b_evict_lock;
  52         void                    *b_data;
  53         arc_evict_func_t        *b_efunc;
  54         void                    *b_private;
  55 };
  56 
  57 typedef enum arc_buf_contents {
  58         ARC_BUFC_DATA,                          /* buffer contains data */
  59         ARC_BUFC_METADATA,                      /* buffer contains metadata */
  60         ARC_BUFC_NUMTYPES
  61 } arc_buf_contents_t;
  62 /*


  85 void arc_data_buf_free(void *buf, uint64_t space);
  86 arc_buf_t *arc_buf_alloc(spa_t *spa, int size, void *tag,
  87     arc_buf_contents_t type);
  88 arc_buf_t *arc_loan_buf(spa_t *spa, int size);
  89 void arc_return_buf(arc_buf_t *buf, void *tag);
  90 void arc_loan_inuse_buf(arc_buf_t *buf, void *tag);
  91 void arc_buf_add_ref(arc_buf_t *buf, void *tag);
  92 boolean_t arc_buf_remove_ref(arc_buf_t *buf, void *tag);
  93 int arc_buf_size(arc_buf_t *buf);
  94 void arc_release(arc_buf_t *buf, void *tag);
  95 int arc_released(arc_buf_t *buf);
  96 int arc_has_callback(arc_buf_t *buf);
  97 void arc_buf_freeze(arc_buf_t *buf);
  98 void arc_buf_thaw(arc_buf_t *buf);
  99 boolean_t arc_buf_eviction_needed(arc_buf_t *buf);
 100 #ifdef ZFS_DEBUG
 101 int arc_referenced(arc_buf_t *buf);
 102 #endif
 103 
 104 int arc_read(zio_t *pio, spa_t *spa, const blkptr_t *bp,
 105     arc_done_func_t *done, void *private, int priority, int flags,
 106     uint32_t *arc_flags, const zbookmark_t *zb);
 107 zio_t *arc_write(zio_t *pio, spa_t *spa, uint64_t txg,
 108     blkptr_t *bp, arc_buf_t *buf, boolean_t l2arc, const zio_prop_t *zp,
 109     arc_done_func_t *ready, arc_done_func_t *done, void *private,
 110     int priority, int zio_flags, const zbookmark_t *zb);
 111 
 112 void arc_set_callback(arc_buf_t *buf, arc_evict_func_t *func, void *private);

 113 int arc_buf_evict(arc_buf_t *buf);
 114 
 115 void arc_flush(spa_t *spa);
 116 void arc_tempreserve_clear(uint64_t reserve);
 117 int arc_tempreserve_space(uint64_t reserve, uint64_t txg);
 118 
 119 void arc_init(void);
 120 void arc_fini(void);
 121 
 122 /*
 123  * Level 2 ARC
 124  */
 125 
 126 void l2arc_add_vdev(spa_t *spa, vdev_t *vd);
 127 void l2arc_remove_vdev(vdev_t *vd);
 128 boolean_t l2arc_vdev_present(vdev_t *vd);
 129 void l2arc_init(void);
 130 void l2arc_fini(void);
 131 void l2arc_start(void);
 132 void l2arc_stop(void);


  21 /*
  22  * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
  23  * Copyright (c) 2012 by Delphix. All rights reserved.
  24  */
  25 
  26 #ifndef _SYS_ARC_H
  27 #define _SYS_ARC_H
  28 
  29 #include <sys/zfs_context.h>
  30 
  31 #ifdef  __cplusplus
  32 extern "C" {
  33 #endif
  34 
  35 #include <sys/zio.h>
  36 #include <sys/dmu.h>
  37 #include <sys/spa.h>
  38 
  39 typedef struct arc_buf_hdr arc_buf_hdr_t;
  40 typedef struct arc_buf arc_buf_t;
  41 typedef void arc_done_func_t(zio_t *zio, arc_buf_t *buf, void *cb_private);
  42 typedef int arc_evict_func_t(void *cb_private);
  43 
  44 /* generic arc_done_func_t's which you can use */
  45 arc_done_func_t arc_bcopy_func;
  46 arc_done_func_t arc_getbuf_func;
  47 
  48 struct arc_buf {
  49         arc_buf_hdr_t           *b_hdr;
  50         arc_buf_t               *b_next;
  51         kmutex_t                b_evict_lock;
  52         void                    *b_data;
  53         arc_evict_func_t        *b_efunc;
  54         void                    *b_private;
  55 };
  56 
  57 typedef enum arc_buf_contents {
  58         ARC_BUFC_DATA,                          /* buffer contains data */
  59         ARC_BUFC_METADATA,                      /* buffer contains metadata */
  60         ARC_BUFC_NUMTYPES
  61 } arc_buf_contents_t;
  62 /*


  85 void arc_data_buf_free(void *buf, uint64_t space);
  86 arc_buf_t *arc_buf_alloc(spa_t *spa, int size, void *tag,
  87     arc_buf_contents_t type);
  88 arc_buf_t *arc_loan_buf(spa_t *spa, int size);
  89 void arc_return_buf(arc_buf_t *buf, void *tag);
  90 void arc_loan_inuse_buf(arc_buf_t *buf, void *tag);
  91 void arc_buf_add_ref(arc_buf_t *buf, void *tag);
  92 boolean_t arc_buf_remove_ref(arc_buf_t *buf, void *tag);
  93 int arc_buf_size(arc_buf_t *buf);
  94 void arc_release(arc_buf_t *buf, void *tag);
  95 int arc_released(arc_buf_t *buf);
  96 int arc_has_callback(arc_buf_t *buf);
  97 void arc_buf_freeze(arc_buf_t *buf);
  98 void arc_buf_thaw(arc_buf_t *buf);
  99 boolean_t arc_buf_eviction_needed(arc_buf_t *buf);
 100 #ifdef ZFS_DEBUG
 101 int arc_referenced(arc_buf_t *buf);
 102 #endif
 103 
 104 int arc_read(zio_t *pio, spa_t *spa, const blkptr_t *bp,
 105     arc_done_func_t *done, void *cb_private, int priority, int flags,
 106     uint32_t *arc_flags, const zbookmark_t *zb);
 107 zio_t *arc_write(zio_t *pio, spa_t *spa, uint64_t txg,
 108     blkptr_t *bp, arc_buf_t *buf, boolean_t l2arc, const zio_prop_t *zp,
 109     arc_done_func_t *ready, arc_done_func_t *done, void *cb_private,
 110     int priority, int zio_flags, const zbookmark_t *zb);
 111 
 112 void arc_set_callback(arc_buf_t *buf, arc_evict_func_t *func,
 113     void *cb_private);
 114 int arc_buf_evict(arc_buf_t *buf);
 115 
 116 void arc_flush(spa_t *spa);
 117 void arc_tempreserve_clear(uint64_t reserve);
 118 int arc_tempreserve_space(uint64_t reserve, uint64_t txg);
 119 
 120 void arc_init(void);
 121 void arc_fini(void);
 122 
 123 /*
 124  * Level 2 ARC
 125  */
 126 
 127 void l2arc_add_vdev(spa_t *spa, vdev_t *vd);
 128 void l2arc_remove_vdev(vdev_t *vd);
 129 boolean_t l2arc_vdev_present(vdev_t *vd);
 130 void l2arc_init(void);
 131 void l2arc_fini(void);
 132 void l2arc_start(void);
 133 void l2arc_stop(void);