_U_DYN_REGISTER(3) Programming Library _U_DYN_REGISTER(3)NAME
_U_dyn_register -- register unwind-info for dynamically generated code
SYNOPSIS
#include <libunwind.h>
void _U_dyn_register(unw_dyn_info_t *di);
DESCRIPTION
The _U_dyn_register() routine registers unwind-info for a dynamically generated procedure. The procedure's unwind-info is described by a
structure of type unw_dyn_info_t (see libunwind-dynamic(3)). A pointer to this structure is passed in argument di.
The _U_dyn_register() routine is guaranteed to execute in constant time (in the absence of contention from concurrent calls to _U_dyn_reg-
ister() or _U_dyn_cancel()).
THREAD AND SIGNAL SAFETY
_U_dyn_register() is thread-safe but not safe to use from a signal handler.
SEE ALSO libunwind-dynamic(3), _U_dyn_cancel(3)AUTHOR
David Mosberger-Tang
Email: dmosberger@gmail.com
WWW: http://www.nongnu.org/libunwind/.
Programming Library 16 August 2007 _U_DYN_REGISTER(3)
Check Out this Related Man Page
UNW_INIT_LOCAL(3) Programming Library UNW_INIT_LOCAL(3)NAME
unw_init_local -- initialize cursor for local unwinding
SYNOPSIS
#include <libunwind.h>
int unw_init_local(unw_cursor_t *c, unw_context_t *ctxt);
DESCRIPTION
The unw_init_local() routine initializes the unwind cursor pointed to by c with the machine-state in the context structure pointed to by
ctxt. As such, the machine-state pointed to by ctxt identifies the initial stack frame at which unwinding starts. The machine-state must
remain valid for the duration for which the cursor c is in use.
The unw_init_local() routine can be used only for unwinding in the address space of the current process (i.e., for local unwinding). For
all other cases, unw_init_remote() must be used instead. From a behavioral point of view, the call:
ret = unw_init_local(&cursor, &ucontext);
is equivalent to:
ret = unw_init_remote(&cursor, unw_local_addr_space,
&ucontext);
However, unwind performance may be better when using unw_init_local(). Also, unw_init_local() is available even when UNW_LOCAL_ONLY has
been defined before including <libunwind.h>, whereas unw_init_remote() is not.
RETURN VALUE
On successful completion, unw_init_local() returns 0. Otherwise the negative value of one of the error-codes below is returned.
THREAD AND SIGNAL SAFETY
unw_init_local() is thread-safe as well as safe to use from a signal handler.
ERRORS
UNW_EINVAL
unw_init_local() was called in a version of libunwind which supports remote unwinding only (this normally happens when calling
unw_init_local() for a cross-platform version of libunwind).
UNW_EUNSPEC
An unspecified error occurred.
UNW_EBADREG
A register needed by unw_init_local() wasn't accessible.
SEE ALSO libunwind(3), unw_init_remote(3)AUTHOR
David Mosberger-Tang
Email: dmosberger@gmail.com
WWW: http://www.nongnu.org/libunwind/.
Programming Library 16 August 2007 UNW_INIT_LOCAL(3)
I have a huge matrix file containing some 1.5 million rows and 6000 columns. The matrix looks something like this:
1 2 3
4 5 6
7 8 9
3 4 5
I want to add all the numbers in the columns of this matrix and display the result to my stdout. This means that the numbers in the first column are:
... (2 Replies)
Hi,
Just trying to get to grips with sed and awk for some reporting for work and I need some assistance:
I have a file that lists policy names on the first line and then on the second line whether the policy is active or not.
Policy Name: Policy1
Active: yes
Policy... (8 Replies)
version info :
vi availabe with RHEL 5.4
I have a text file with 10,000 lines. I want to copy lines from 5000th line to 7000th and redirect to a file. Any idea how I can do this?
Note:
The above scenario is just an example. In my actual requirement, the file has 14 million lines and I want... (9 Replies)
Hi everyone,
I know the following questions are noobish questions but I am asking them because I am confused about the basics of history behind UNIX and LINUX.
Ok onto business, my questions are-:
Was/Is UNIX ever an open source operating system ?
If UNIX was... (21 Replies)
Hello,
I couldn't find an actual introduction thread, so I decided to just put this here.
I go by d0wngrade online. I have been programming in multiple languages for about 15+ years. I started with standard web design languages like HTML and CSS, but I then advanced from design to development... (2 Replies)
Hi guys...
The first active code line in AudioScope.sh is set -u .
This causes a complete exit if a variable is used/found but has not been allocated at the start of the program.
However, apart from writing code to do the task, is there a switch to to check which variables have been... (17 Replies)
Hi.
In thread https://www.unix.com/shell-programming-and-scripting/267833-grouping-counting.html rovf and I had a mini-discussion on grep and awk.
Here is a demo script that compares the awk and grep approaches for this single problem:
#!/usr/bin/env bash
# @(#) s2 Demonstrate group... (1 Reply)
Hello,
I have to fish out some specific columns from a file based on the header value. I have the list of columns I need in a different file. I thought I could read in the list of headers I need,
# file with header names of required columns in required order
headers_file=$2
# read contents... (11 Replies)
For those interested in installing dash shell on OSX Lion to help test POSIX compliancy of shell scripts, it is quite easy. I did it like this:
If you don't have gcc on your system:
0. Download and install the Command Line Tools for Xcode package from Sign In - Apple *
1. Download the dash... (2 Replies)
Hello and thanks in advance for any help anyone can offer me
I'm trying to learn the find command and thought I was understanding it... Apparently I was wrong. I was doing compound searches and I started getting weird results with the -size test. I was trying to do a search on a 1G file owned by... (14 Replies)
I have data of an excel files as given below,
file1
org1_1 1 1 2.5 100
org1_2 1 2 5.5 98
org1_3 1 3 7.2 88
file2
org2_1 1 1 2.5 100
org2_2 1 2 5.5 56
org2_3 1 3 7.2 70
I have multiple excel files as above shown.
I have to copy column 1, column 4 and paste into a new excel file as... (26 Replies)
Dear All,
Taking a break from Vue.js coding for the site, SEO and YT videos; and hopefully addressing some well deserved criticism from some here that I have been too focused on the visual aspects of the forums versus the substance and the community....
While the "current generation... (9 Replies)
Hi all...
Well guys and gals, I jumped in at the deep end and found things that PERL cannot do by default.
Many tricky terminal escape codes are not catered for so I had to create workarounds.
One thing I searched for was this:
Passing perl variable to shell command
AND, @Neo this was... (15 Replies)