zfs/lib/libumem/umem_base.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
  27 #ifndef _UMEM_BASE_H
  28 #define _UMEM_BASE_H
  29
  30 /* #pragma ident        "@(#)umem_base.h        1.4     05/06/08 SMI" */
  31
  32 #include <umem_impl.h>
  33
  34 #ifdef  __cplusplus
  35 extern "C" {
  36 #endif
  37
  38 #include "misc.h"
  39
  40 extern size_t pagesize;
  41 #undef PAGESIZE
  42 #define PAGESIZE        pagesize
  43
  44 /*
  45  * umem.c: non-tunables
  46  */
  47 extern vmem_t           *umem_memalign_arena;
  48
  49 extern int umem_ready;
  50 extern thread_t umem_init_thr;          /* the thread doing the init */
  51
  52 extern int umem_init(void);             /* do umem's initialization */
  53 /* #pragma rarely_called(umem_init) */
  54
  55 extern umem_log_header_t *umem_transaction_log;
  56 extern umem_log_header_t *umem_content_log;
  57 extern umem_log_header_t *umem_failure_log;
  58 extern umem_log_header_t *umem_slab_log;
  59
  60 extern mutex_t umem_init_lock;
  61
  62 extern mutex_t umem_cache_lock;
  63 extern umem_cache_t umem_null_cache;
  64
  65 extern mutex_t umem_flags_lock;
  66
  67 extern mutex_t umem_update_lock;
  68 extern cond_t umem_update_cv;
  69 extern volatile thread_t umem_st_update_thr;
  70 extern thread_t umem_update_thr;
  71 extern struct timeval   umem_update_next;
  72
  73 extern volatile hrtime_t umem_reap_next;
  74 extern volatile uint32_t umem_reaping;
  75 #define UMEM_REAP_DONE          0x00000000      /* inactive */
  76 #define UMEM_REAP_ADDING        0x00000001      /* umem_reap() is active */
  77 #define UMEM_REAP_ACTIVE        0x00000002      /* update thread is reaping */
  78
  79 /*
  80  * umem.c: tunables
  81  */
  82 extern uint32_t umem_max_ncpus;
  83
  84 extern uint32_t umem_stack_depth;
  85 extern uint32_t umem_reap_interval;
  86 extern uint32_t umem_update_interval;
  87 extern uint32_t umem_depot_contention;
  88 extern uint32_t umem_abort;
  89 extern uint32_t umem_output;
  90 extern uint32_t umem_logging;
  91 extern uint32_t umem_mtbf;
  92 extern size_t umem_transaction_log_size;
  93 extern size_t umem_content_log_size;
  94 extern size_t umem_failure_log_size;
  95 extern size_t umem_slab_log_size;
  96 extern size_t umem_content_maxsave;
  97 extern size_t umem_lite_minsize;
  98 extern size_t umem_lite_maxalign;
  99 extern size_t umem_maxverify;
 100 extern size_t umem_minfirewall;
 101
 102 extern uint32_t umem_flags;
 103
 104 /*
 105  * umem.c: Internal aliases (to avoid PLTs)
 106  */
 107 extern void *_umem_alloc(size_t size, int umflags);
 108 extern void *_umem_zalloc(size_t size, int umflags);
 109 extern void _umem_free(void *buf, size_t size);
 110
 111 extern void *_umem_cache_alloc(umem_cache_t *cache, int flags);
 112 extern void _umem_cache_free(umem_cache_t *cache, void *buffer);
 113
 114 /*
 115  * umem.c: private interfaces
 116  */
 117 extern void umem_type_init(caddr_t, size_t, size_t);
 118 extern int umem_get_max_ncpus(void);
 119 extern void umem_process_updates(void);
 120 extern void umem_cache_applyall(void (*)(umem_cache_t *));
 121 extern void umem_cache_update(umem_cache_t *);
 122
 123 /*
 124  * umem_fork.c: private interfaces
 125  */
 126 extern void umem_forkhandler_init(void);
 127
 128 /*
 129  * umem_update_thread.c
 130  */
 131 extern int umem_create_update_thread(void);
 132
 133 /*
 134  * envvar.c:
 135  */
 136 void umem_setup_envvars(int);
 137 void umem_process_envvars(void);
 138
 139 #ifdef  __cplusplus
 140 }
 141 #endif
 142
 143 #endif  /* _UMEM_BASE_H */