FreeBSD/Linux Kernel Cross Reference
sys/contrib/openzfs/include/os/freebsd/spl/sys/kmem.h

     /*
      * Copyright (c) 2007 Pawel Jakub Dawidek <pjd@FreeBSD.org>
      * All rights reserved.
      *
      * Redistribution and use in source and binary forms, with or without
      * modification, are permitted provided that the following conditions
      * are met:
      * 1. Redistributions of source code must retain the above copyright
      *    notice, this list of conditions and the following disclaimer.
     * 2. Redistributions in binary form must reproduce the above copyright
     *    notice, this list of conditions and the following disclaimer in the
     *    documentation and/or other materials provided with the distribution.
     *
     * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
     * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
     * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     * SUCH DAMAGE.
     *
     * $FreeBSD$
     */
    
    #ifndef _OPENSOLARIS_SYS_KMEM_H_
    #define _OPENSOLARIS_SYS_KMEM_H_
    
    #ifdef _KERNEL
    #include <sys/param.h>
    #include <sys/malloc.h>
    #include <sys/vmem.h>
    #include <sys/counter.h>
    
    #include <vm/uma.h>
    #include <vm/vm.h>
    #include <vm/vm_extern.h>
    
    MALLOC_DECLARE(M_SOLARIS);
    
    #define POINTER_IS_VALID(p)     (!((uintptr_t)(p) & 0x3))
    #define POINTER_INVALIDATE(pp)  (*(pp) = (void *)((uintptr_t)(*(pp)) | 0x1))
    
    #define KM_SLEEP                M_WAITOK
    #define KM_PUSHPAGE             M_WAITOK
    #define KM_NOSLEEP              M_NOWAIT
    #define KM_NORMALPRI            0
    #define KMC_NODEBUG             UMA_ZONE_NODUMP
    
    typedef struct vmem vmem_t;
    
    extern char     *kmem_asprintf(const char *, ...)
        __attribute__((format(printf, 1, 2)));
    extern char *kmem_vasprintf(const char *fmt, va_list ap)
        __attribute__((format(printf, 1, 0)));
    
    extern int kmem_scnprintf(char *restrict str, size_t size,
        const char *restrict fmt, ...);
    
    typedef struct kmem_cache {
            char            kc_name[32];
    #if !defined(KMEM_DEBUG)
            uma_zone_t      kc_zone;
    #else
            size_t          kc_size;
    #endif
            int             (*kc_constructor)(void *, void *, int);
            void            (*kc_destructor)(void *, void *);
            void            *kc_private;
    } kmem_cache_t;
    
    extern uint64_t spl_kmem_cache_inuse(kmem_cache_t *cache);
    extern uint64_t spl_kmem_cache_entry_size(kmem_cache_t *cache);
    
    __attribute__((alloc_size(1)))
    void *zfs_kmem_alloc(size_t size, int kmflags);
    void zfs_kmem_free(void *buf, size_t size);
    uint64_t kmem_size(void);
    kmem_cache_t *kmem_cache_create(const char *name, size_t bufsize, size_t align,
        int (*constructor)(void *, void *, int), void (*destructor)(void *, void *),
        void (*reclaim)(void *) __unused, void *private, vmem_t *vmp, int cflags);
    void kmem_cache_destroy(kmem_cache_t *cache);
    void *kmem_cache_alloc(kmem_cache_t *cache, int flags);
    void kmem_cache_free(kmem_cache_t *cache, void *buf);
    boolean_t kmem_cache_reap_active(void);
    void kmem_cache_reap_soon(kmem_cache_t *);
    void kmem_reap(void);
    int kmem_debugging(void);
    void *calloc(size_t n, size_t s);
    
    
    #define kmem_cache_reap_now kmem_cache_reap_soon
    #define freemem                         vm_free_count()
    #define minfree                         vm_cnt.v_free_min
    #define kmem_alloc(size, kmflags)       zfs_kmem_alloc((size), (kmflags))
    #define kmem_zalloc(size, kmflags)                              \
           zfs_kmem_alloc((size), (kmflags) | M_ZERO)
   #define kmem_free(buf, size)            zfs_kmem_free((buf), (size))
   
   #endif  /* _KERNEL */
   
   #ifdef _STANDALONE
   /*
    * At the moment, we just need it for the type. We redirect the alloc/free
    * routines to the usual Free and Malloc in that environment.
    */
   typedef int kmem_cache_t;
   #endif /* _STANDALONE */
   
   #endif  /* _OPENSOLARIS_SYS_KMEM_H_ */

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