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Full Discussion: Memory Leaks
Top Forums Programming Memory Leaks Post 302721443 by Don Cragun on Thursday 25th of October 2012 11:56:17 AM
Old 10-25-2012
All memory allocated by a process is returned to the system when the process terminates.

A very small amount of memory will remain after the process terminates that indicates the status of the terminated process. That memory will be released when the process that started the terminated process either gathers the exit status of its dead child (by calling something like wait()) or terminates.
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EXIT(2) 							System Calls Manual							   EXIT(2)

NAME
exit, _exit - terminate a process SYNOPSIS
void _exit(int status) DESCRIPTION
_exit terminates a process with the following consequences: All of the descriptors open in the calling process are closed. This may entail delays, for example, waiting for output to drain; a process in this state may not be killed, as it is already dying. If the parent process of the calling process is executing a wait or is interested in the SIGCHLD signal (Minix-vmd), then it is notified of the calling process's termination and the low-order eight bits of status are made available to it; see wait(2). The parent process ID of all of the calling process's existing child processes are also set to 1. This means that the initializa- tion process (see intro(2)) inherits each of these processes as well. Most C programs call the library routine exit(3), which performs cleanup actions in the standard I/O library before calling _exit. RETURN VALUE
This call never returns. SEE ALSO
fork(2), sigaction(2), wait(2), exit(3). 4th Berkeley Distribution May 22, 1986 EXIT(2)
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