05-29-2012
sigsegv doesn't mean much on its own. You need to see the context to fix it.
10 More Discussions You Might Find Interesting
1. Programming
I have a class with an integer pointer, which I have not initialized to NULL in the constructor. For example:
class myclass
{
private:
char * name;
int *site;
}
myclass:: myclass(....)
: name(NULL)
{
.....
}
other member function “delete “ the variable before... (2 Replies)
Discussion started by: sureshreddi_ps
2 Replies
2. Shell Programming and Scripting
Hi All,
I need help in writing a script. I need a script that takes a name as a parameter and executes the follwoing steps.
The name will be like BUDGET01_BARE_DLY_YYYYMMDD, BUDGET02_BARE_DLY_YYYYMMDD etc. The YYYYMMDD represent today( systemdate). This names have to be passed as... (2 Replies)
Discussion started by: dsravan
2 Replies
3. UNIX for Dummies Questions & Answers
hi everyone i'm a noob trying to learn unix language.. but seems like i got no leads on how to start..
i'm playing with the 'ps' command.. i'm trying to show the pid, ppid, username, command, cpu utilization (in desc order), process start time and process status.. all in a command.. am i able... (3 Replies)
Discussion started by: hilofat
3 Replies
4. UNIX for Dummies Questions & Answers
When i run a program in sun solaris i got core dumped with an error message as follows...
signal SEGV (no mapping at the fault address) in _malloc_unlocked at 0xfe1d44ac
0xfe1d44ac: _malloc_unlocked+0x022c: ld , %o3
Current function is GetEDBInfo
360 EXEC SQL
(dbx) where... (1 Reply)
Discussion started by: noufal
1 Replies
5. IP Networking
Hi,
Can anyone please tell me where I can get the small projects with source code based on client-server programming using sockets in unix :confused::confused::confused:
Thanks in advance... (1 Reply)
Discussion started by: smartgupta
1 Replies
6. AIX
Hello all,
One of the application we port to Aix from linux Segmentation faults when it exits. Here is part of backtrace of SEGV:
(dbx) where
splay(??, ??, ??) at
free_y(??, ??) at
free_common(??) at
....
exit(??) at
...
Application seem to perform everything expected well and... (1 Reply)
Discussion started by: qrio.qrio
1 Replies
7. UNIX for Dummies Questions & Answers
Hello - I need to know the detail of HUP and SEGV.
I know HUP is Hangup and can be use to kill a Unix login session remotely by sending a hangup signal to the process running the login session.
Could someone tell me in detail prupose of HUP and SEGV (segmentation violation)?
I need to... (1 Reply)
Discussion started by: namasteall2000
1 Replies
8. UNIX for Dummies Questions & Answers
Hello
i ve got the following error on a C servor.
signal SEGV (no mapping at the fault address)
when running in dbx
program terminated by signal SEGV (no mapping at the fault address)
0xff1d5cb4: srch_dir+0x0154: cmp %o1, %o0
Current function is _log
533 ... (4 Replies)
Discussion started by: mumuri
4 Replies
9. Programming
Hi,
I am unable to copy the cursor value into character variable which is defined in nested structure by pointer.
typedef struct aaa
{
unsigned char device_type;
unsigned char encrypt;
unsigned short rec_len;
} ABC;
typedef ABC *Pabc;
typedef struct def
{
ABC... (9 Replies)
Discussion started by: gthangav
9 Replies
10. UNIX for Dummies Questions & Answers
HI All,
I am doing a mini project following are the requirement
1. end user will connect to the system via ssh
2. all the key board inputs should be captured and based on "enter" it should send to an argument to another script
3. control + y, control + x should be ignored
Please provide me... (0 Replies)
Discussion started by: ramukumar
0 Replies
LEARN ABOUT DEBIAN
bup-margin
bup-margin(1) General Commands Manual bup-margin(1)
NAME
bup-margin - figure out your deduplication safety margin
SYNOPSIS
bup margin [options...]
DESCRIPTION
bup margin iterates through all objects in your bup repository, calculating the largest number of prefix bits shared between any two
entries. This number, n, identifies the longest subset of SHA-1 you could use and still encounter a collision between your object ids.
For example, one system that was tested had a collection of 11 million objects (70 GB), and bup margin returned 45. That means a 46-bit
hash would be sufficient to avoid all collisions among that set of objects; each object in that repository could be uniquely identified by
its first 46 bits.
The number of bits needed seems to increase by about 1 or 2 for every doubling of the number of objects. Since SHA-1 hashes have 160 bits,
that leaves 115 bits of margin. Of course, because SHA-1 hashes are essentially random, it's theoretically possible to use many more bits
with far fewer objects.
If you're paranoid about the possibility of SHA-1 collisions, you can monitor your repository by running bup margin occasionally to see if
you're getting dangerously close to 160 bits.
OPTIONS
--predict
Guess the offset into each index file where a particular object will appear, and report the maximum deviation of the correct answer
from the guess. This is potentially useful for tuning an interpolation search algorithm.
--ignore-midx
don't use .midx files, use only .idx files. This is only really useful when used with --predict.
EXAMPLE
$ bup margin
Reading indexes: 100.00% (1612581/1612581), done.
40
40 matching prefix bits
1.94 bits per doubling
120 bits (61.86 doublings) remaining
4.19338e+18 times larger is possible
Everyone on earth could have 625878182 data sets
like yours, all in one repository, and we would
expect 1 object collision.
$ bup margin --predict
PackIdxList: using 1 index.
Reading indexes: 100.00% (1612581/1612581), done.
915 of 1612581 (0.057%)
SEE ALSO
bup-midx(1), bup-save(1)
BUP
Part of the bup(1) suite.
AUTHORS
Avery Pennarun <apenwarr@gmail.com>.
Bup unknown- bup-margin(1)