zfs/lib/libumem/include/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 (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   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  * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
  23  * Use is subject to license terms.
  24  */
  25
  26 #ifndef _UMEM_BASE_H
  27 #define _UMEM_BASE_H
  28
  29 #pragma ident   "%Z%%M% %I%     %E% SMI"
  30
  31 #include <umem_impl.h>
  32
  33 #ifdef  __cplusplus
  34 extern "C" {
  35 #endif
  36
  37 #include "misc.h"
  38
  39 extern size_t pagesize;
  40 #undef PAGESIZE
  41 #define PAGESIZE        pagesize
  42
  43 /*
  44  * umem.c: non-tunables
  45  */
  46 extern vmem_t           *umem_memalign_arena;
  47
  48 extern int umem_ready;
  49 extern thread_t umem_init_thr;          /* the thread doing the init */
  50
  51 extern int umem_init(void);             /* do umem's initialization */
  52 #pragma rarely_called(umem_init)
  53
  54 extern umem_log_header_t *umem_transaction_log;
  55 extern umem_log_header_t *umem_content_log;
  56 extern umem_log_header_t *umem_failure_log;
  57 extern umem_log_header_t *umem_slab_log;
  58
  59 extern mutex_t umem_init_lock;
  60
  61 extern mutex_t umem_cache_lock;
  62 extern umem_cache_t umem_null_cache;
  63
  64 extern mutex_t umem_flags_lock;
  65
  66 extern mutex_t umem_update_lock;
  67 extern cond_t umem_update_cv;
  68 extern volatile thread_t umem_st_update_thr;
  69 extern thread_t umem_update_thr;
  70 extern struct timeval   umem_update_next;
  71
  72 extern volatile hrtime_t umem_reap_next;
  73 extern volatile uint32_t umem_reaping;
  74 #define UMEM_REAP_DONE          0x00000000      /* inactive */
  75 #define UMEM_REAP_ADDING        0x00000001      /* umem_reap() is active */
  76 #define UMEM_REAP_ACTIVE        0x00000002      /* update thread is reaping */
  77
  78 /*
  79  * umem.c: tunables
  80  */
  81 extern uint32_t umem_max_ncpus;
  82
  83 extern uint32_t umem_stack_depth;
  84 extern uint32_t umem_reap_interval;
  85 extern uint32_t umem_update_interval;
  86 extern uint32_t umem_depot_contention;
  87 extern uint32_t umem_abort;
  88 extern uint32_t umem_output;
  89 extern uint32_t umem_logging;
  90 extern uint32_t umem_mtbf;
  91 extern size_t umem_transaction_log_size;
  92 extern size_t umem_content_log_size;
  93 extern size_t umem_failure_log_size;
  94 extern size_t umem_slab_log_size;
  95 extern size_t umem_content_maxsave;
  96 extern size_t umem_lite_minsize;
  97 extern size_t umem_lite_maxalign;
  98 extern size_t umem_maxverify;
  99 extern size_t umem_minfirewall;
 100
 101 extern uint32_t umem_flags;
 102
 103 /*
 104  * umem.c: Internal aliases (to avoid PLTs)
 105  */
 106 extern void *_umem_alloc(size_t size, int umflags);
 107 extern void *_umem_zalloc(size_t size, int umflags);
 108 extern void _umem_free(void *buf, size_t size);
 109
 110 extern void *_umem_cache_alloc(umem_cache_t *cache, int flags);
 111 extern void _umem_cache_free(umem_cache_t *cache, void *buffer);
 112
 113 /*
 114  * umem.c: private interfaces
 115  */
 116 extern void umem_type_init(caddr_t, size_t, size_t);
 117 extern int umem_get_max_ncpus(void);
 118 extern void umem_process_updates(void);
 119 extern void umem_cache_applyall(void (*)(umem_cache_t *));
 120 extern void umem_cache_update(umem_cache_t *);
 121
 122 extern void umem_alloc_sizes_add(size_t);
 123 extern void umem_alloc_sizes_clear(void);
 124 extern void umem_alloc_sizes_remove(size_t);
 125
 126 /*
 127  * umem_fork.c: private interfaces
 128  */
 129 extern void umem_forkhandler_init(void);
 130
 131 /*
 132  * umem_update_thread.c
 133  */
 134 extern int umem_create_update_thread(void);
 135
 136 /*
 137  * envvar.c:
 138  */
 139 void umem_setup_envvars(int);
 140 void umem_process_envvars(void);
 141
 142 #ifdef  __cplusplus
 143 }
 144 #endif
 145
 146 #endif  /* _UMEM_BASE_H */