75 lines
1.8 KiB
C
75 lines
1.8 KiB
C
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/*
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* CDDL HEADER START
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*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License (the "License").
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* You may not use this file except in compliance with the License.
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*
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* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
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* or http://www.opensolaris.org/os/licensing.
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* See the License for the specific language governing permissions
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* and limitations under the License.
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
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* If applicable, add the following below this CDDL HEADER, with the
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* fields enclosed by brackets "[]" replaced with your own identifying
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* information: Portions Copyright [yyyy] [name of copyright owner]
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*
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* CDDL HEADER END
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*/
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/*
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* This header file distributed under the terms of the CDDL.
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* Portions Copyright 2008 Sun Microsystems, Inc. All Rights reserved.
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*/
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#ifndef _SYS_STACK_H
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#define _SYS_STACK_H
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#include <pthread.h>
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#define STACK_BIAS 0
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#ifdef __USE_GNU
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static inline int
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stack_getbounds(stack_t *sp)
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{
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pthread_attr_t attr;
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int rc;
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rc = pthread_getattr_np(pthread_self(), &attr);
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if (rc)
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return (rc);
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rc = pthread_attr_getstack(&attr, &sp->ss_sp, &sp->ss_size);
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if (rc == 0)
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sp->ss_flags = 0;
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pthread_attr_destroy(&attr);
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return (rc);
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}
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static inline int
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thr_stksegment(stack_t *sp)
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{
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int rc;
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rc = stack_getbounds(sp);
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if (rc)
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return (rc);
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/*
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* thr_stksegment() is expected to set sp.ss_sp to the high stack
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* address, but the stack_getbounds() interface is expected to
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* set sp.ss_sp to the low address. Adjust accordingly.
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*/
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sp->ss_sp = (void *)(((uintptr_t)sp->ss_sp) + sp->ss_size);
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sp->ss_flags = 0;
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return (rc);
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}
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#endif /* __USE_GNU */
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#endif /* _SYS_STACK_H */
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