[src/trunk]: src/sys/rump/librump/rumpkern Pull all relegating memory allocat...

[pooka <pooka%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/fc8f201fc163
branches:  trunk
changeset: 748762:fc8f201fc163
user:      pooka <pooka%NetBSD.org@localhost>
date:      Wed Nov 04 20:38:58 2009 +0000

description:
Pull all relegating memory allocators under a common roof in memalloc.c
(forgot to commit the new file)

diffstat:

 sys/rump/librump/rumpkern/memalloc.c |  313 +++++++++++++++++++++++++++++++++++
 1 files changed, 313 insertions(+), 0 deletions(-)

diffs (truncated from 317 to 300 lines):

diff -r 76115255754c -r fc8f201fc163 sys/rump/librump/rumpkern/memalloc.c
--- /dev/null   Thu Jan 01 00:00:00 1970 +0000
+++ b/sys/rump/librump/rumpkern/memalloc.c      Wed Nov 04 20:38:58 2009 +0000
@@ -0,0 +1,313 @@
+/*     $NetBSD: memalloc.c,v 1.1 2009/11/04 20:38:58 pooka Exp $       */
+
+/*
+ * Copyright (c) 2009 Antti Kantee.  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 AUTHOR ``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 AUTHOR 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.
+ */
+
+#include <sys/cdefs.h>
+__KERNEL_RCSID(0, "$NetBSD");
+
+#include <sys/param.h>
+#include <sys/kmem.h>
+#include <sys/malloc.h>
+#include <sys/pool.h>
+
+#include <rump/rumpuser.h>
+
+/*
+ * Allocator "implementations" which relegate tasks to the host
+ * libc malloc.
+ *
+ * Supported:
+ *   + malloc
+ *   + kmem
+ *   + pool
+ *   + pool_cache
+ */
+
+/*
+ * malloc
+ */
+
+void
+malloc_type_attach(struct malloc_type *type)
+{
+
+       return;
+}
+
+void
+malloc_type_detach(struct malloc_type *type)
+{
+
+       return;
+}
+
+void *
+kern_malloc(unsigned long size, struct malloc_type *type, int flags)
+{
+       void *rv;
+
+       rv = rumpuser_malloc(size, (flags & (M_CANFAIL | M_NOWAIT)) != 0);
+       if (rv && flags & M_ZERO)
+               memset(rv, 0, size);
+
+       return rv;
+}
+
+void *
+kern_realloc(void *ptr, unsigned long size, struct malloc_type *type, int flags)
+{
+
+       return rumpuser_realloc(ptr, size, (flags & (M_CANFAIL|M_NOWAIT)) != 0);
+}
+
+void
+kern_free(void *ptr, struct malloc_type *type)
+{
+
+       rumpuser_free(ptr);
+}
+
+/*
+ * Kmem
+ */
+
+#ifndef RUMP_USE_REAL_ALLOCATORS
+void
+kmem_init()
+{
+
+       /* nothing to do */
+}
+
+void *
+kmem_alloc(size_t size, km_flag_t kmflag)
+{
+
+       return rumpuser_malloc(size, kmflag == KM_NOSLEEP);
+}
+
+void *
+kmem_zalloc(size_t size, km_flag_t kmflag)
+{
+       void *rv;
+
+       rv = kmem_alloc(size, kmflag);
+       if (rv)
+               memset(rv, 0, size);
+
+       return rv;
+}
+
+void
+kmem_free(void *p, size_t size)
+{
+
+       rumpuser_free(p);
+}
+
+/*
+ * pool & pool_cache
+ */
+
+struct pool_cache pnbuf_cache;
+struct pool pnbuf_pool;
+struct pool_allocator pool_allocator_nointr;
+
+void
+pool_subsystem_init()
+{
+
+       /* nada */
+}
+
+void
+pool_init(struct pool *pp, size_t size, u_int align, u_int align_offset,
+       int flags, const char *wchan, struct pool_allocator *palloc, int ipl)
+{
+
+       pp->pr_size = size;
+}
+
+void
+pool_destroy(struct pool *pp)
+{
+
+       return;
+}
+
+pool_cache_t
+pool_cache_init(size_t size, u_int align, u_int align_offset, u_int flags,
+       const char *wchan, struct pool_allocator *palloc, int ipl,
+       int (*ctor)(void *, void *, int), void (*dtor)(void *, void *),
+       void *arg)
+{
+       pool_cache_t pc;
+
+       pc = rumpuser_malloc(sizeof(*pc), 0);
+       pool_cache_bootstrap(pc, size, align, align_offset, flags, wchan,
+           palloc, ipl, ctor, dtor, arg);
+       return pc;
+}
+
+void
+pool_cache_bootstrap(pool_cache_t pc, size_t size, u_int align,
+       u_int align_offset, u_int flags, const char *wchan,
+       struct pool_allocator *palloc, int ipl,
+       int (*ctor)(void *, void *, int), void (*dtor)(void *, void *),
+       void *arg)
+{
+
+       pool_init(&pc->pc_pool, size, align, align_offset, flags,
+           wchan, palloc, ipl);
+       pc->pc_ctor = ctor;
+       pc->pc_dtor = dtor;
+       pc->pc_arg = arg;
+}
+
+void
+pool_cache_destroy(pool_cache_t pc)
+{
+
+       pool_destroy(&pc->pc_pool);
+       rumpuser_free(pc);
+}
+
+void *
+pool_cache_get_paddr(pool_cache_t pc, int flags, paddr_t *pap)
+{
+       void *item;
+
+       item = pool_get(&pc->pc_pool, 0);
+       if (pc->pc_ctor)
+               pc->pc_ctor(pc->pc_arg, item, flags);
+       if (pap)
+               *pap = POOL_PADDR_INVALID;
+
+       return item;
+}
+
+void
+pool_cache_put_paddr(pool_cache_t pc, void *object, paddr_t pa)
+{
+
+       if (pc->pc_dtor)
+               pc->pc_dtor(pc->pc_arg, object);
+       pool_put(&pc->pc_pool, object);
+}
+
+bool
+pool_cache_reclaim(pool_cache_t pc)
+{
+
+       return true;
+}
+
+void *
+pool_get(struct pool *pp, int flags)
+{
+       void *rv;
+
+#ifdef DIAGNOSTIC
+       if (pp->pr_size == 0)
+               panic("%s: pool unit size 0.  not initialized?", __func__);
+#endif
+
+       rv = rumpuser_malloc(pp->pr_size, 1);
+       if (rv == NULL && (flags & PR_WAITOK && (flags & PR_LIMITFAIL) == 0))
+               panic("%s: out of memory and PR_WAITOK", __func__);
+
+       return rv;
+}
+
+void
+pool_put(struct pool *pp, void *item)
+{
+
+       rumpuser_free(item);
+}
+
+void
+pool_sethiwat(struct pool *pp, int n)
+{
+
+       return;
+}
+
+void
+pool_setlowat(struct pool *pp, int n)
+{
+
+       return;
+}
+
+void
+pool_cache_sethardlimit(pool_cache_t pc, int n, const char *warnmess,
+       int ratecap)
+{
+
+       return;
+}
+
+void
+pool_cache_setlowat(pool_cache_t pc, int n)
+{
+
+       return;
+}
+
+void
+pool_cache_set_drain_hook(pool_cache_t pc, void (*fn)(void *, int), void *arg)
+{
+
+       /* XXX: notused */
+       pc->pc_pool.pr_drain_hook = fn;
+       pc->pc_pool.pr_drain_hook_arg = arg;
+}
+
+int
+pool_prime(struct pool *pp, int nitems)
+{
+
+       return 0;
+}
+