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d158fa4ade
Some best-effort consumers may find trylock behavior for stack(9) symbol resolution acceptable. Expose that behavior to such consumers. This API is ugly. If in the future the modules and linker file list locking is cleaned up such that the linker_files list can be iterated safely without acquiring a sleepable lock, this API should be removed. However, most of the time nothing will be holding the linker files lock exclusive and the acquisition can proceed. Reviewed by: markj Sponsored by: Dell EMC Isilon Differential Revision: https://reviews.freebsd.org/D17620
69 lines
2.6 KiB
C
69 lines
2.6 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 2005 Antoine Brodin
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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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 <sys/_stack.h>
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struct sbuf;
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/* MI Routines. */
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struct stack *stack_create(int);
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void stack_destroy(struct stack *);
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int stack_put(struct stack *, vm_offset_t);
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void stack_copy(const struct stack *, struct stack *);
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void stack_zero(struct stack *);
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void stack_print(const struct stack *);
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void stack_print_ddb(const struct stack *);
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void stack_print_short(const struct stack *);
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void stack_print_short_ddb(const struct stack *);
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void stack_sbuf_print(struct sbuf *, const struct stack *);
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void stack_sbuf_print_ddb(struct sbuf *, const struct stack *);
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int stack_sbuf_print_flags(struct sbuf *, const struct stack *,
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int);
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#ifdef KTR
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void stack_ktr(u_int, const char *, int, const struct stack *,
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u_int, int);
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#define CTRSTACK(m, st, depth, cheap) do { \
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if (KTR_COMPILE & (m)) \
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stack_ktr((m), __FILE__, __LINE__, st, depth, cheap); \
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} while(0)
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#else
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#define CTRSTACK(m, st, depth, cheap)
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#endif
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/* MD Routines. */
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struct thread;
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void stack_save(struct stack *);
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void stack_save_td(struct stack *, struct thread *);
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int stack_save_td_running(struct stack *, struct thread *);
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#endif
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