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8115 parallel zfs mount


   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21 
  22 /*
  23  * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
  24  * Use is subject to license terms.
  25  */
  26 
  27 /*
  28  * Copyright (c) 2014 by Delphix. All rights reserved.

  29  */
  30 
  31 /*      Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T     */
  32 /*        All Rights Reserved   */
  33 
  34 
  35 #ifndef _SYS_BITMAP_H
  36 #define _SYS_BITMAP_H
  37 
  38 #ifdef  __cplusplus
  39 extern "C" {
  40 #endif
  41 
  42 #include <sys/feature_tests.h>
  43 #if defined(__GNUC__) && defined(_ASM_INLINES) && \
  44         (defined(__i386) || defined(__amd64))
  45 #include <asm/bitmap.h>
  46 #endif
  47 
  48 /*


 117         (((nbits) + BT_NBIPUL32 - 1l) / BT_NBIPUL32)
 118 #define BT_SIZEOFMAP32(nbits) \
 119         (BT_BITOUL32(nbits) * sizeof (uint_t))
 120 #define BT_TEST32(bitmap, bitindex) \
 121         ((BT_WIM32((bitmap), (bitindex)) & BT_BIW32(bitindex)) ? 1 : 0)
 122 #define BT_SET32(bitmap, bitindex) \
 123         { BT_WIM32((bitmap), (bitindex)) |= BT_BIW32(bitindex); }
 124 #define BT_CLEAR32(bitmap, bitindex) \
 125         { BT_WIM32((bitmap), (bitindex)) &= ~BT_BIW32(bitindex); }
 126 #endif /* _LP64 */
 127 
 128 
 129 /*
 130  * BIT_ONLYONESET is a private macro not designed for bitmaps of
 131  * arbitrary size.  u must be an unsigned integer/long.  It returns
 132  * true if one and only one bit is set in u.
 133  */
 134 #define BIT_ONLYONESET(u) \
 135         ((((u) == 0) ? 0 : ((u) & ((u) - 1)) == 0))
 136 
 137 #if defined(_KERNEL) && !defined(_ASM)
 138 #include <sys/atomic.h>
 139 
 140 /*
 141  * return next available bit index from map with specified number of bits
 142  */
 143 extern index_t  bt_availbit(ulong_t *bitmap, size_t nbits);
 144 /*
 145  * find the highest order bit that is on, and is within or below
 146  * the word specified by wx
 147  */
 148 extern int      bt_gethighbit(ulong_t *mapp, int wx);
 149 extern int      bt_range(ulong_t *bitmap, size_t *pos1, size_t *pos2,
 150                         size_t end_pos);
 151 /*
 152  * Find highest and lowest one bit set.
 153  *      Returns bit number + 1 of bit that is set, otherwise returns 0.
 154  * Low order bit is 0, high order bit is 31.
 155  */
 156 extern int      highbit(ulong_t);
 157 extern int      highbit64(uint64_t);


 171  * to 0 otherwise.
 172  */
 173 #define BT_ATOMIC_SET(bitmap, bitindex) \
 174         { atomic_or_ulong(&(BT_WIM(bitmap, bitindex)), BT_BIW(bitindex)); }
 175 #define BT_ATOMIC_CLEAR(bitmap, bitindex) \
 176         { atomic_and_ulong(&(BT_WIM(bitmap, bitindex)), ~BT_BIW(bitindex)); }
 177 
 178 #define BT_ATOMIC_SET_EXCL(bitmap, bitindex, result) \
 179         { result = atomic_set_long_excl(&(BT_WIM(bitmap, bitindex)),        \
 180             (bitindex) % BT_NBIPUL); }
 181 #define BT_ATOMIC_CLEAR_EXCL(bitmap, bitindex, result) \
 182         { result = atomic_clear_long_excl(&(BT_WIM(bitmap, bitindex)),      \
 183             (bitindex) % BT_NBIPUL); }
 184 
 185 /*
 186  * Extracts bits between index h (high, inclusive) and l (low, exclusive) from
 187  * u, which must be an unsigned integer.
 188  */
 189 #define BITX(u, h, l)   (((u) >> (l)) & ((1LU << ((h) - (l) + 1LU)) - 1LU))
 190 
 191 #endif  /* _KERNEL && !_ASM */
 192 
 193 #ifdef  __cplusplus
 194 }
 195 #endif
 196 
 197 #endif  /* _SYS_BITMAP_H */


   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21 
  22 /*
  23  * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
  24  * Use is subject to license terms.
  25  */
  26 
  27 /*
  28  * Copyright (c) 2014 by Delphix. All rights reserved.
  29  * Copyright 2017 RackTop Systems.
  30  */
  31 
  32 /*      Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T     */
  33 /*        All Rights Reserved   */
  34 
  35 
  36 #ifndef _SYS_BITMAP_H
  37 #define _SYS_BITMAP_H
  38 
  39 #ifdef  __cplusplus
  40 extern "C" {
  41 #endif
  42 
  43 #include <sys/feature_tests.h>
  44 #if defined(__GNUC__) && defined(_ASM_INLINES) && \
  45         (defined(__i386) || defined(__amd64))
  46 #include <asm/bitmap.h>
  47 #endif
  48 
  49 /*


 118         (((nbits) + BT_NBIPUL32 - 1l) / BT_NBIPUL32)
 119 #define BT_SIZEOFMAP32(nbits) \
 120         (BT_BITOUL32(nbits) * sizeof (uint_t))
 121 #define BT_TEST32(bitmap, bitindex) \
 122         ((BT_WIM32((bitmap), (bitindex)) & BT_BIW32(bitindex)) ? 1 : 0)
 123 #define BT_SET32(bitmap, bitindex) \
 124         { BT_WIM32((bitmap), (bitindex)) |= BT_BIW32(bitindex); }
 125 #define BT_CLEAR32(bitmap, bitindex) \
 126         { BT_WIM32((bitmap), (bitindex)) &= ~BT_BIW32(bitindex); }
 127 #endif /* _LP64 */
 128 
 129 
 130 /*
 131  * BIT_ONLYONESET is a private macro not designed for bitmaps of
 132  * arbitrary size.  u must be an unsigned integer/long.  It returns
 133  * true if one and only one bit is set in u.
 134  */
 135 #define BIT_ONLYONESET(u) \
 136         ((((u) == 0) ? 0 : ((u) & ((u) - 1)) == 0))
 137 
 138 #if (defined(_KERNEL) || defined(_FAKE_KERNEL)) && !defined(_ASM)
 139 #include <sys/atomic.h>
 140 
 141 /*
 142  * return next available bit index from map with specified number of bits
 143  */
 144 extern index_t  bt_availbit(ulong_t *bitmap, size_t nbits);
 145 /*
 146  * find the highest order bit that is on, and is within or below
 147  * the word specified by wx
 148  */
 149 extern int      bt_gethighbit(ulong_t *mapp, int wx);
 150 extern int      bt_range(ulong_t *bitmap, size_t *pos1, size_t *pos2,
 151                         size_t end_pos);
 152 /*
 153  * Find highest and lowest one bit set.
 154  *      Returns bit number + 1 of bit that is set, otherwise returns 0.
 155  * Low order bit is 0, high order bit is 31.
 156  */
 157 extern int      highbit(ulong_t);
 158 extern int      highbit64(uint64_t);


 172  * to 0 otherwise.
 173  */
 174 #define BT_ATOMIC_SET(bitmap, bitindex) \
 175         { atomic_or_ulong(&(BT_WIM(bitmap, bitindex)), BT_BIW(bitindex)); }
 176 #define BT_ATOMIC_CLEAR(bitmap, bitindex) \
 177         { atomic_and_ulong(&(BT_WIM(bitmap, bitindex)), ~BT_BIW(bitindex)); }
 178 
 179 #define BT_ATOMIC_SET_EXCL(bitmap, bitindex, result) \
 180         { result = atomic_set_long_excl(&(BT_WIM(bitmap, bitindex)),        \
 181             (bitindex) % BT_NBIPUL); }
 182 #define BT_ATOMIC_CLEAR_EXCL(bitmap, bitindex, result) \
 183         { result = atomic_clear_long_excl(&(BT_WIM(bitmap, bitindex)),      \
 184             (bitindex) % BT_NBIPUL); }
 185 
 186 /*
 187  * Extracts bits between index h (high, inclusive) and l (low, exclusive) from
 188  * u, which must be an unsigned integer.
 189  */
 190 #define BITX(u, h, l)   (((u) >> (l)) & ((1LU << ((h) - (l) + 1LU)) - 1LU))
 191 
 192 #endif  /* (_KERNEL || _FAKE_KERNEL) && !_ASM */
 193 
 194 #ifdef  __cplusplus
 195 }
 196 #endif
 197 
 198 #endif  /* _SYS_BITMAP_H */