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Top Forums Programming Why memory allocated through malloc should be freed ? Post 302349281 by matrixmadhan on Monday 31st of August 2009 02:27:11 PM
Old 08-31-2009
memory leak problem should not be handled carelessly and should not be left to OS to handle that. It should be handled with care.

On your desktop or test host only ( not in prod ), write a program that only does malloc() without free() for every 30 seconds and see the system performance over period of time. Difference will be quite obvious.

Also, think of a ever running program like daemons and a memory leak problem in it, over a period of time, this memory leak problem will manifest itself and disturb the system.
 

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curs_memleaks(3X)														 curs_memleaks(3X)

NAME
_nc_freeall _nc_free_and_exit - curses memory-leak checking SYNOPSIS
#include <curses.h> void _nc_freeall(void); void _nc_free_and_exit(int); DESCRIPTION
These functions are used to simplify analysis of memory leaks in the ncurses library. They are normally not available; they must be con- figured into the library at build time using the --disable-leaks option. That compiles-in code that frees memory that normally would not be freed. Any implementation of curses must not free the memory associated with a screen, since (even after calling endwin), it must be available for use in the next call to refresh. There are also chunks of memory held for performance reasons. That makes it hard to analyze curses ap- plications for memory leaks. To work around this, one can build a debugging version of the ncurses library which frees those chunks which it can, and provides these functions to free all of the memory allocated by the ncurses library. The _nc_free_and_exit function is the preferred one since some of the memory which is freed may be required for the application to continue running. Its parameter is the code to pass to the exit routine. RETURN VALUE
These functions do not return a value. PORTABILITY
These functions are not part of the XSI interface. SEE ALSO
curses(3X). curs_memleaks(3X)
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