tmem.c revision 4f364e7c95ee7fd9d5bbeddc1940e92405bb0e72
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright (c) 2012, Joyent, Inc. All rights reserved.
*/
#include "lint.h"
#include "thr_uberdata.h"
/*
* This file implements the private interface with libumem for per-thread
* caching umem (ptcumem). For the full details on how tcumem works and how
* these functions work, see section 8.4 of the big theory statement in
* lib/libumem/common/umem.c.
*/
static tmem_func_t tmem_cleanup = NULL;
uintptr_t
_tmem_get_base(void)
{
return ((uintptr_t)&curthread->ul_tmem - (uintptr_t)curthread);
}
int
_tmem_get_nentries(void)
{
return (NTMEMBASE);
}
void
_tmem_set_cleanup(tmem_func_t f)
{
tmem_cleanup = f;
}
/*
* This is called by _thrp_exit() to clean up any per-thread allocations that
* are still hanging around and haven't been cleaned up.
*/
void
tmem_exit(void)
{
int ii;
void *buf, *next;
tumem_t *tp = &curthread->ul_tmem;
if (tp->tm_size == 0)
return;
/*
* Since we have something stored here, we need to ensure we declared a
* clean up handler. If we haven't that's broken and our single private
* consumer should be shot.
*/
if (tmem_cleanup == NULL)
abort();
for (ii = 0; ii < NTMEMBASE; ii++) {
buf = tp->tm_roots[ii];
while (buf != NULL) {
next = *(void **)buf;
tmem_cleanup(buf, ii);
buf = next;
}
}
}