Sponsored Content
Full Discussion: Memory Leak
Top Forums Programming Memory Leak Post 302440798 by jim mcnamara on Wednesday 28th of July 2010 09:49:03 AM
Old 07-28-2010
I don't know what you are seeing and how you got your conclusions.

1. free() does not return memory to the OS. malloc() (via brk() ) got the memory from the OS. The idea is that the requested memory stay associated with the process until the process ends. It is too expensive to keep calling brk().

2. memory leaks look like this from your vantage point :
the process memory keeps on growing over time. For example: the process has 100MB at 9:00am, by 9:05 it has 120MB, by 9:30 200MB -- as long as it runs it gains memory.

3. There are tools to find memory leaks, things like valgrind, electric fence.
 

9 More Discussions You Might Find Interesting

1. Programming

about virtual memory and memory leak

Hi, First of all I appreciate this group very much for its informative discussions and posts. Here is my question. I have one process whose virtual memory size increases linearly from 6MB to 12MB in 20 minutes. Does that mean my process has memory leaks? In what cases does the... (4 Replies)
Discussion started by: shriashishpatil
4 Replies

2. UNIX for Advanced & Expert Users

Check memory leak

I am running c++ code on AIX unix.I have a doubt that my code is using some memory but it is not clearing that.Some time i am getting heap allocation problem.In my code i am not using any malloc,new functions also i am justing using pointers and arrays. Is there any way i can find out if the... (2 Replies)
Discussion started by: ukatru
2 Replies

3. UNIX for Advanced & Expert Users

Memory leak while using pthread_cancel()

I tried to execute a sample pthread program to cancel a newly created one using pthread_cancel(). but using valgrind on my code shows some memory leak. My Code: #include "iostream" #include "unistd.h" #include "pthread.h" #include "signal.h" using namespace std; void handler(int); void*... (4 Replies)
Discussion started by: kcr
4 Replies

4. Programming

Memory LEAK with pthreads

I have this code... #include <stdio.h> #include <iostream> #include <pthread.h> static void* cliente(void *datos); int main() { pthread_attr_t tattr; int ret; size_t size = PTHREAD_STACK_MIN + 0x0100; ret = pthread_attr_init(&tattr); ret =... (8 Replies)
Discussion started by: JEscola
8 Replies

5. UNIX for Advanced & Expert Users

Need to create a memory leak

Hi. This might be a strange request, but does anyone have any idea on a simple shell script that would use more and more memory as it ran? Like a purposeful leak. I want to test the behaviour of an already running program when the machine runs out of memory. Thanks! (4 Replies)
Discussion started by: rebelbuttmunch
4 Replies

6. IP Networking

memory leak?

Hi All, my client server application can work in two modes: 1) one direction - only client sends msgs to server 2) two directions - server gives 'answers' to client. when program run in the first mode it looks OK, but when server answers to client than client's application exit its... (2 Replies)
Discussion started by: lenna
2 Replies

7. Programming

memory leak problem

hi all Can any one plz explain me about memory leak problem Thankx (5 Replies)
Discussion started by: sonali
5 Replies

8. Red Hat

Memory leak

Hi all I am using RED HAT 5.4, and i am getting memory uses problem. when i use "sync;echo 3 > /proc/sys/vm/drop_cache" command the memory will release after 2,3 hour memory show 95%. pls suggest right way. thanks (37 Replies)
Discussion started by: reply.ravi
37 Replies

9. Programming

Help regarding memory leak in this C program

I have written this code in C which reads a very large collection of text files and does some processing. The problem with this code is that there are memory leaks which I am not able to figure out as to where the problem is. When I run this code, and see the memory usage using top command, then I... (7 Replies)
Discussion started by: shoaibjameel123
7 Replies
Graphics::Primitive::Insets(3pm)			User Contributed Perl Documentation			  Graphics::Primitive::Insets(3pm)

NAME
Graphics::Primitive::Insets - Space between things DESCRIPTION
Graphics::Primitive::Insets represents the amount of space that surrounds something. This object can be used to represent either padding or margins (in the CSS sense, one being inside the bounding box, the other being outside) SYNOPSIS
use Graphics::Primitive::Insets; my $insets = Graphics::Primitive::Insets->new({ top => 5, bottom => 5, left => 5, right => 5 }); METHODS
Constructor new Creates a new Graphics::Primitive::Insets. Instance Methods as_array Return these insets as an array in the form of top, right, bottom and left. bottom Set/Get the inset from the bottom. equal_to Determine if these Insets are equal to another. left Set/Get the inset from the left. right Set/Get the inset from the right. top Set/Get the inset from the top. zero Sets all the insets (top, left, bottom, right) to 0. AUTHOR
Cory Watson, "<gphat@cpan.org>" SEE ALSO
perl(1) COPYRIGHT &; LICENSE Copyright 2008-2010 by Cory G Watson. This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself. perl v5.12.3 2010-08-21 Graphics::Primitive::Insets(3pm)
All times are GMT -4. The time now is 11:04 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy