libfakekernel/common/kmem.c

	kmem.c revision b819cea2f73f98c5662230cc9affc8cc84f77fcf
/*
 * This file and its contents are supplied under the terms of the
 * Common Development and Distribution License ("CDDL"), version 1.0.
 * You may only use this file in accordance with the terms of version
 * 1.0 of the CDDL.
 *
 * A full copy of the text of the CDDL should have accompanied this
 * source.  A copy of the CDDL is also available via the Internet at
 * http://www.illumos.org/license/CDDL.
 */

/*
 * Copyright 2013 Nexenta Systems, Inc.  All rights reserved.
 */

#include <sys/kmem.h>

#include <sys/debug.h>
#include <sys/ksynch.h>
#include <sys/systm.h>

#include <umem.h>

void    abort(void) __NORETURN;

static int
kmem_failed_cb(void)
{
    abort();
    return (UMEM_CALLBACK_RETRY);
}

#pragma init(_kmem_init)
static int
_kmem_init(void)
{
    umem_nofail_callback(kmem_failed_cb);
    return (0);
}

static int
kmem2umem_flags(int kmflags)
{
    int umflags = UMEM_NOFAIL;
    if (kmflags & KM_NOSLEEP)
        umflags = UMEM_DEFAULT;
    return (umflags);
}

int
kmem_debugging(void)
{
    return (0);
}

void *
kmem_alloc(size_t size, int kmflags)
{
    return (umem_alloc(size, kmem2umem_flags(kmflags)));
}

void *
kmem_zalloc(size_t size, int kmflags)
{
    return (umem_zalloc(size, kmem2umem_flags(kmflags)));
}


void
kmem_free(void *buf, size_t size)
{
    umem_free(buf, size);
}

/* void *kmem_alloc_tryhard(size_t size, size_t *alloc_size, int kmflags); */

kmem_cache_t *
kmem_cache_create(
    char *name,     /* descriptive name for this cache */
    size_t bufsize,     /* size of the objects it manages */
    size_t align,       /* required object alignment */
    int (*constructor)(void *, void *, int), /* object constructor */
    void (*destructor)(void *, void *), /* object destructor */
    void (*reclaim)(void *), /* memory reclaim callback */
    void *private,      /* pass-thru arg for constr/destr/reclaim */
    vmem_t *vmp,        /* vmem source for slab allocation */
    int kcflags)        /* cache creation flags */
{
    umem_cache_t *uc;
    int ucflags = 0;

    /* Ignore KMC_NOTOUCH - not needed for userland caches */
    if (kcflags & KMC_NODEBUG)
        ucflags |= UMC_NODEBUG;
    if (kcflags & KMC_NOMAGAZINE)
        ucflags |= UMC_NOMAGAZINE;
    if (kcflags & KMC_NOHASH)
        ucflags |= UMC_NOHASH;

    uc = umem_cache_create(name, bufsize, align,
        constructor, destructor, reclaim,
        private, vmp, ucflags);
    return ((kmem_cache_t *)uc);
}

void
kmem_cache_destroy(kmem_cache_t *kc)
{
    umem_cache_destroy((umem_cache_t *)kc);
}

void *
kmem_cache_alloc(kmem_cache_t *kc, int kmflags)
{
    return (umem_cache_alloc((umem_cache_t *)kc,
        kmem2umem_flags(kmflags)));
}

void
kmem_cache_free(kmem_cache_t *kc, void *p)
{
    umem_cache_free((umem_cache_t *)kc, p);
}

/* ARGSUSED */
void
kmem_cache_set_move(kmem_cache_t *kc,
    kmem_cbrc_t (*fun)(void *, void *, size_t, void *))
{
}

/* ARGSUSED */
void
kmem_cache_reap_now(kmem_cache_t *kc)
{
}

/* uint64_t kmem_cache_stat(kmem_cache_t *, char *); */

/* ARGSUSED */
void
vmem_qcache_reap(struct  vmem *vmp)
{
}

void
strfree(char *str)
{
    ASSERT(str != NULL);
    kmem_free(str, strlen(str) + 1);
}