140 lines
3.9 KiB
C
140 lines
3.9 KiB
C
/* $NetBSD: subr_lwp_specificdata.c,v 1.4 2019/05/17 03:34:26 ozaki-r Exp $ */
|
|
|
|
/*-
|
|
* Copyright (c) 2006 The NetBSD Foundation, Inc.
|
|
* 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
|
|
*/
|
|
|
|
#define _LWP_API_PRIVATE
|
|
|
|
#include <sys/cdefs.h>
|
|
__KERNEL_RCSID(0, "$NetBSD: subr_lwp_specificdata.c,v 1.4 2019/05/17 03:34:26 ozaki-r Exp $");
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/lwp.h>
|
|
#include <sys/specificdata.h>
|
|
|
|
static specificdata_domain_t lwp_specificdata_domain;
|
|
|
|
void
|
|
lwpinit_specificdata(void)
|
|
{
|
|
|
|
lwp_specificdata_domain = specificdata_domain_create();
|
|
KASSERT(lwp_specificdata_domain != NULL);
|
|
}
|
|
|
|
/*
|
|
* lwp_specific_key_create --
|
|
* Create a key for subsystem lwp-specific data.
|
|
*/
|
|
int
|
|
lwp_specific_key_create(specificdata_key_t *keyp, specificdata_dtor_t dtor)
|
|
{
|
|
|
|
return (specificdata_key_create(lwp_specificdata_domain, keyp, dtor));
|
|
}
|
|
|
|
/*
|
|
* lwp_specific_key_delete --
|
|
* Delete a key for subsystem lwp-specific data.
|
|
*/
|
|
void
|
|
lwp_specific_key_delete(specificdata_key_t key)
|
|
{
|
|
|
|
specificdata_key_delete(lwp_specificdata_domain, key);
|
|
}
|
|
|
|
/*
|
|
* lwp_initspecific --
|
|
* Initialize an LWP's specificdata container.
|
|
*/
|
|
void
|
|
lwp_initspecific(struct lwp *l)
|
|
{
|
|
int error __diagused;
|
|
|
|
error = specificdata_init(lwp_specificdata_domain, &l->l_specdataref);
|
|
KASSERT(error == 0);
|
|
}
|
|
|
|
/*
|
|
* lwp_finispecific --
|
|
* Finalize an LWP's specificdata container.
|
|
*/
|
|
void
|
|
lwp_finispecific(struct lwp *l)
|
|
{
|
|
|
|
specificdata_fini(lwp_specificdata_domain, &l->l_specdataref);
|
|
}
|
|
|
|
/*
|
|
* lwp_getspecific --
|
|
* Return lwp-specific data corresponding to the specified key.
|
|
*
|
|
* Note: LWP specific data is NOT INTERLOCKED. An LWP should access
|
|
* only its OWN SPECIFIC DATA. If it is necessary to access another
|
|
* LWP's specifc data, care must be taken to ensure that doing so
|
|
* would not cause internal data structure inconsistency (i.e. caller
|
|
* can guarantee that the target LWP is not inside an lwp_getspecific()
|
|
* or lwp_setspecific() call).
|
|
*/
|
|
void *
|
|
lwp_getspecific(specificdata_key_t key)
|
|
{
|
|
|
|
return (specificdata_getspecific_unlocked(lwp_specificdata_domain,
|
|
&curlwp->l_specdataref, key));
|
|
}
|
|
|
|
void *
|
|
_lwp_getspecific_by_lwp(struct lwp *l, specificdata_key_t key)
|
|
{
|
|
|
|
return (specificdata_getspecific_unlocked(lwp_specificdata_domain,
|
|
&l->l_specdataref, key));
|
|
}
|
|
|
|
/*
|
|
* lwp_setspecific --
|
|
* Set lwp-specific data corresponding to the specified key.
|
|
*/
|
|
void
|
|
lwp_setspecific(specificdata_key_t key, void *data)
|
|
{
|
|
|
|
specificdata_setspecific(lwp_specificdata_domain,
|
|
&curlwp->l_specdataref, key, data);
|
|
}
|
|
|
|
void
|
|
lwp_setspecific_by_lwp(struct lwp *l, specificdata_key_t key, void *data)
|
|
{
|
|
|
|
specificdata_setspecific(lwp_specificdata_domain,
|
|
&l->l_specdataref, key, data);
|
|
}
|