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mostang.com!davidm 2004-03-31 00:52:17 +00:00
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doc/unw_getcontext.man
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@ -1,5 +1,5 @@
'\" t
.\" Manual page created with latex2man on Tue Jan 20 16:44:37 PST 2004
.\" Manual page created with latex2man on Tue Mar 30 16:50:17 PST 2004
.\" NOTE: This file is generated, DO NOT EDIT.
.de Vb
.ft CW
@ -10,7 +10,7 @@
.fi
..
.TH "UNW\\_GETCONTEXT" "3" "20 January 2004" "Programming Library " "Programming Library "
.TH "UNW\\_GETCONTEXT" "3" "30 March 2004" "Programming Library " "Programming Library "
.SH NAME
unw_getcontext
\-\- get initial machine\-state
@ -41,6 +41,27 @@ stack\-pointer, will be stored.
This routine is normally implemented as a macro and applications
should not attempt to take its address.
.PP
.SH PLATFORM\-SPECIFIC NOTES
.PP
On IA\-64, unw_context_t
has a layout that is compatible with
that of ucontext_t
and such structures can be initialized with
getcontext()
instead of unw_getcontext().
However, the
reverse is \fInot\fP
true and it is \fInot\fP
safe to use structures
initialized by unw_getcontext()
in places where a structure
initialized by getcontext()
is expected. The reason for this
asymmetry is that unw_getcontext()
is optimized for maximum
performance and does not, for example, save the signal mask.
.PP
.SH RETURN VALUE
.PP