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127 lines
2.7 KiB
Groff
127 lines
2.7 KiB
Groff
'\" t
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.\" Manual page created with latex2man on Wed Mar 31 10:56:47 PST 2004
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.\" NOTE: This file is generated, DO NOT EDIT.
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.de Vb
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.ft CW
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.nf
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..
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.de Ve
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.ft R
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.fi
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..
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.TH "UNW\\_INIT\\_REMOTE" "3" "31 March 2004" "Programming Library " "Programming Library "
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.SH NAME
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unw_init_remote
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\-\- initialize cursor for remote unwinding
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.PP
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.SH SYNOPSIS
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.PP
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#include <libunwind.h>
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.br
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.PP
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int
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unw_init_remote(unw_cursor_t *c,
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unw_addr_space_t as,
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void *arg);
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.br
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.PP
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.SH DESCRIPTION
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.PP
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The unw_init_remote()
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routine initializes the unwind cursor
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pointed to by c
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for unwinding in the address space identified by
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as\&.
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The as
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argument can either be set to
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unw_local_addr_space
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(local address space) or to an arbitrary
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address space created with unw_create_addr_space().
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.PP
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The arg
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void\-pointer tells the address space exactly what entity
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should be unwound. For example, if unw_local_addr_space
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is
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passed in as,
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then arg
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needs to be a pointer to a context
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structure containing the machine\-state of the initial stack frame.
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However, other address\-spaces may instead expect a process\-id, a
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thread\-id, or a pointer to an arbitrary structure which identifies the
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stack\-frame chain to be unwound. In other words, the interpretation
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of arg
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is entirely dependent on the address\-space in use;
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libunwind
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never interprets the argument in any way on its own.
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.PP
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Note that unw_init_remote()
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can be used to initiate unwinding
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in \fIany\fP
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process, including the local process in which the
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unwinder itself is running. However, for local unwinding, it is
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generally preferable to use unw_init_local()
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instead, because
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it is easier to use and because it may perform better.
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.PP
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.SH RETURN VALUE
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.PP
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On successful completion, unw_init_remote()
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returns 0.
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Otherwise the negative value of one of the error\-codes below is
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returned.
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.PP
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.SH THREAD AND SIGNAL SAFETY
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.PP
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unw_init_remote()
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is thread\-safe. If the local address\-space
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is passed in argument as,
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this routine is also safe to use from
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a signal handler.
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.PP
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.SH ERRORS
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.PP
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.TP
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UNW_EINVAL
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unw_init_remote()
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was called in a
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version of libunwind
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which supports local unwinding only
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(this normally happens when defining UNW_LOCAL_ONLY
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before
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including <libunwind.h>
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and then calling
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unw_init_remote()).
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.TP
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UNW_EUNSPEC
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An unspecified error occurred.
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.TP
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UNW_EBADREG
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A register needed by unw_init_remote()
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wasn\&'t accessible.
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.PP
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.SH SEE ALSO
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.PP
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libunwind(3),
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unw_create_addr_space(3),
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unw_init_local(3)
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.PP
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.SH AUTHOR
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.PP
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David Mosberger\-Tang
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.br
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Hewlett\-Packard Labs
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.br
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Palo\-Alto, CA 94304
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.br
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Email: \fBdavidm@hpl.hp.com\fP
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.br
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WWW: \fBhttp://www.hpl.hp.com/research/linux/libunwind/\fP\&.
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.\" NOTE: This file is generated, DO NOT EDIT.
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