53 lines
995 B
C
53 lines
995 B
C
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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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/* 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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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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