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Re: noob question - destructors - freeing memory...

From "MikeWhy" <boat042-nospam@yahoo.com>
Newsgroups comp.lang.c++
Subject Re: noob question - destructors - freeing memory...
Date 2012-01-01 19:20 -0600
Organization A noiseless patient Spider
Message-ID <jdr0pl$a5o$1@dont-email.me> (permalink)
References (8 earlier) <jdm8rc$8mu$1@dont-email.me> <1bacfeb8-ebc0-432d-a1c5-a64e23c52bac@n39g2000yqh.googlegroups.com> <jdnfsg$2vv$1@dont-email.me> <4f008114$0$7883$cc2e38e6@news.uslec.net> <4f00ed4d$0$293$14726298@news.sunsite.dk>

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"someone" <newsboost@gmail.com> wrote in message 
news:4f00ed4d$0$293$14726298@news.sunsite.dk...
> So, like me you don't know if linux, windows or mac OS free's the memory 
> when exit(0) or exit(1) is called, and at least we don't count on it 
> unless somebody (in here?) says otherwise...

Yes, we know for certain that Mac, Windows, and Linux/UNIX all release 
memory held by the process when they terminate. They also release mutexes, 
close files, sockets, and such. What isn't clear is whether your app leaves 
the files and shared resources in a consistent state when you slam the 
process. Device drivers and video libraries were once particularly fragile, 
but that is mostly just a bad rememberance these days.

It can be that for some or even many apps, process cleanup by the OS is 
sufficient. This should be a conscious choice, though, knowing what is safe 
and what is not, rather than left to chance out of ignorance. Destructors 
can do much more than simply release memory.

The largest problem in self-education is what you don't know about what you 
need to know. It looks like you're coming to grips with process flow on 
termination. You need to now understand more about what the OS thinks of a 
process, its resources and lifetime. It's a long path, and aside from my 
passing mention of destructors above, not language specific and probably 
should be moved to a different newsgroup.

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Thread

noob question - destructors - freeing memory... someone <newsboost@gmail.com> - 2011-12-31 02:43 +0100
  Re: noob question - destructors - freeing memory... "MikeWhy" <boat042-nospam@yahoo.com> - 2011-12-30 20:06 -0600
    Re: noob question - destructors - freeing memory... someone <newsboost@gmail.com> - 2011-12-31 03:33 +0100
      Re: noob question - destructors - freeing memory... "MikeWhy" <boat042-nospam@yahoo.com> - 2011-12-30 21:22 -0600
        Re: noob question - destructors - freeing memory... someone <newsboost@gmail.com> - 2011-12-31 04:57 +0100
          Re: noob question - destructors - freeing memory... "MikeWhy" <boat042-nospam@yahoo.com> - 2011-12-30 22:28 -0600
            Re: noob question - destructors - freeing memory... "MikeWhy" <boat042-nospam@yahoo.com> - 2011-12-30 22:43 -0600
            Re: noob question - destructors - freeing memory... someone <newsboost@gmail.com> - 2011-12-31 05:49 +0100
              Re: noob question - destructors - freeing memory... "MikeWhy" <boat042-nospam@yahoo.com> - 2011-12-30 23:56 -0600
                Re: noob question - destructors - freeing memory... someone <newsboost@gmail.com> - 2011-12-31 07:07 +0100
                Re: noob question - destructors - freeing memory... Nick Keighley <nick_keighley_nospam@hotmail.com> - 2011-12-31 01:50 -0800
                Re: noob question - destructors - freeing memory... someone <newsboost@gmail.com> - 2011-12-31 18:13 +0100
                Re: noob question - destructors - freeing memory... Nobody <nobody@nowhere.com> - 2012-01-01 08:37 +0000
                Re: noob question - destructors - freeing memory... LR <lruss@superlink.net> - 2012-01-01 10:54 -0500
                Re: noob question - destructors - freeing memory... someone <newsboost@gmail.com> - 2012-01-02 00:33 +0100
                Re: noob question - destructors - freeing memory... "MikeWhy" <boat042-nospam@yahoo.com> - 2012-01-01 19:20 -0600
                Re: noob question - destructors - freeing memory... someone <newsboost@gmail.com> - 2012-01-02 03:55 +0100
                Re: noob question - destructors - freeing memory... Stefan Ensslen <stefan@zollsoft.de> - 2012-01-02 04:32 -0800
                Re: noob question - destructors - freeing memory... someone <newsboost@gmail.com> - 2012-01-02 17:40 +0100
                Re: noob question - destructors - freeing memory... Dombo <dombo@disposable.invalid> - 2012-01-02 19:14 +0100
                Re: noob question - destructors - freeing memory... someone <newsboost@gmail.com> - 2012-01-02 21:30 +0100
                Re: noob question - destructors - freeing memory... jgk@panix.com (Joe keane) - 2012-01-07 23:23 +0000
                Re: noob question - destructors - freeing memory... "MikeWhy" <boat042-nospam@yahoo.com> - 2012-01-07 17:43 -0600
                Re: noob question - destructors - freeing memory... Garrett Hartshaw <ghartshaw@gmail.com> - 2012-01-01 22:54 -0500
                Re: noob question - destructors - freeing memory... someone <newsboost@gmail.com> - 2012-01-02 05:29 +0100
                Re: noob question - destructors - freeing memory... Nick Keighley <nick_keighley_nospam@hotmail.com> - 2012-01-01 13:38 -0800
                Re: noob question - destructors - freeing memory... someone <newsboost@gmail.com> - 2012-01-02 00:35 +0100
      Re: noob question - destructors - freeing memory... "Bo Persson" <bop@gmb.dk> - 2011-12-31 12:55 +0100
  Re: noob question - destructors - freeing memory... Garrett Hartshaw <ghartshaw@gmail.com> - 2011-12-30 22:50 -0500
    Re: noob question - destructors - freeing memory... someone <newsboost@gmail.com> - 2011-12-31 05:37 +0100
      Re: noob question - destructors - freeing memory... LR <lruss@superlink.net> - 2011-12-31 01:07 -0500
        Re: noob question - destructors - freeing memory... someone <newsboost@gmail.com> - 2011-12-31 08:54 +0100
          Re: noob question - destructors - freeing memory... Nick Keighley <nick_keighley_nospam@hotmail.com> - 2011-12-31 02:05 -0800
            Re: noob question - destructors - freeing memory... someone <newsboost@gmail.com> - 2011-12-31 18:22 +0100
              Re: noob question - destructors - freeing memory... Nick Keighley <nick_keighley_nospam@hotmail.com> - 2012-01-01 13:45 -0800
                Re: noob question - destructors - freeing memory... Jorgen Grahn <grahn+nntp@snipabacken.se> - 2012-01-02 12:17 +0000
                Re: noob question - destructors - freeing memory... someone <newsboost@gmail.com> - 2012-01-02 17:48 +0100
                Re: noob question - destructors - freeing memory... Jorgen Grahn <grahn+nntp@snipabacken.se> - 2012-01-02 20:02 +0000
              Re: noob question - destructors - freeing memory... Nick Keighley <nick_keighley_nospam@hotmail.com> - 2012-01-01 13:42 -0800
      Re: noob question - destructors - freeing memory... Nick Keighley <nick_keighley_nospam@hotmail.com> - 2011-12-31 01:52 -0800
        Re: noob question - destructors - freeing memory... someone <newsboost@gmail.com> - 2011-12-31 18:23 +0100
      Re: noob question - destructors - freeing memory... Garrett Hartshaw <ghartshaw@gmail.com> - 2011-12-31 12:35 -0500
        Re: noob question - destructors - freeing memory... someone <newsboost@gmail.com> - 2012-01-02 00:47 +0100
  Re: noob question - destructors - freeing memory... Juha Nieminen <nospam@thanks.invalid> - 2011-12-31 09:40 +0000
    Re: noob question - destructors - freeing memory... someone <newsboost@gmail.com> - 2011-12-31 18:26 +0100
      Re: noob question - destructors - freeing memory... Garrett Hartshaw <ghartshaw@gmail.com> - 2011-12-31 13:00 -0500
      Re: noob question - destructors - freeing memory... Nobody <nobody@nowhere.com> - 2012-01-01 08:57 +0000
        Re: noob question - destructors - freeing memory... someone <newsboost@gmail.com> - 2012-01-02 00:43 +0100
      Re: noob question - destructors - freeing memory... Juha Nieminen <nospam@thanks.invalid> - 2012-01-01 09:03 +0000
        Re: noob question - destructors - freeing memory... someone <newsboost@gmail.com> - 2012-01-02 00:49 +0100
          Re: noob question - destructors - freeing memory... LR <lruss@superlink.net> - 2012-01-01 21:11 -0500
            Re: noob question - destructors - freeing memory... POSSIBLE SOLUTION FOUND? someone <newsboost@gmail.com> - 2012-01-02 05:23 +0100
              Re: noob question - destructors - freeing memory... POSSIBLE SOLUTION
 FOUND? Garrett Hartshaw <ghartshaw@gmail.com> - 2012-01-02 00:14 -0500
                Re: noob question - destructors - freeing memory... POSSIBLE SOLUTION FOUND? someone <newsboost@gmail.com> - 2012-01-02 17:55 +0100
                Re: noob question - destructors - freeing memory... POSSIBLE SOLUTION FOUND? someone <newsboost@gmail.com> - 2012-01-02 22:17 +0100
                Re: noob question - destructors - freeing memory... POSSIBLE SOLUTION
 FOUND? Garrett Hartshaw <ghartshaw@gmail.com> - 2012-01-02 16:40 -0500
                Re: noob question - destructors - freeing memory... POSSIBLE SOLUTION FOUND? someone <newsboost@gmail.com> - 2012-01-03 00:48 +0100
              Re: noob question - destructors - freeing memory... POSSIBLE SOLUTION FOUND? LR <lruss@superlink.net> - 2012-01-02 14:47 -0500
                Re: noob question - destructors - freeing memory... POSSIBLE SOLUTION FOUND? someone <newsboost@gmail.com> - 2012-01-03 00:43 +0100
                Re: noob question - destructors - freeing memory... POSSIBLE SOLUTION FOUND? LR <lruss@superlink.net> - 2012-01-02 20:30 -0500
                Re: noob question - destructors - freeing memory... POSSIBLE SOLUTION FOUND? someone <newsboost@gmail.com> - 2012-01-03 19:08 +0100
                Re: noob question - destructors - freeing memory... POSSIBLE SOLUTION FOUND? LR <lruss@superlink.net> - 2012-01-03 17:46 -0500
                Re: noob question - destructors - freeing memory... POSSIBLE SOLUTION FOUND? someone <newsboost@gmail.com> - 2012-01-04 21:11 +0100
                Re: noob question - destructors - freeing memory... POSSIBLE SOLUTION FOUND? LR <lruss@superlink.net> - 2012-01-04 18:56 -0500
                Re: noob question - destructors - freeing memory... POSSIBLE SOLUTION
 FOUND? Garrett Hartshaw <ghartshaw@gmail.com> - 2012-01-03 19:49 -0500
                Re: noob question - destructors - freeing memory... POSSIBLE SOLUTION FOUND? LR <lruss@superlink.net> - 2012-01-03 21:51 -0500
                Re: noob question - destructors - freeing memory... POSSIBLE SOLUTION
 FOUND? Garrett Hartshaw <ghartshaw@gmail.com> - 2012-01-03 23:37 -0500
                Re: noob question - destructors - freeing memory... POSSIBLE SOLUTION FOUND? LR <lruss@superlink.net> - 2012-01-04 14:24 -0500
                Re: noob question - destructors - freeing memory... POSSIBLE SOLUTION FOUND? someone <newsboost@gmail.com> - 2012-01-04 21:20 +0100
                Re: noob question - destructors - freeing memory... POSSIBLE SOLUTION FOUND? LR <lruss@superlink.net> - 2012-01-04 18:51 -0500
                Re: noob question - destructors - freeing memory... POSSIBLE SOLUTION FOUND? someone <newsboost@gmail.com> - 2012-01-05 07:32 +0100
          Re: noob question - destructors - freeing memory... Garrett Hartshaw <ghartshaw@gmail.com> - 2012-01-01 23:02 -0500
            Re: noob question - destructors - freeing memory... someone <newsboost@gmail.com> - 2012-01-02 05:33 +0100
            Re: noob question - destructors - freeing memory... "io_x" <a@b.c.invalid> - 2012-01-02 11:05 +0100
          Re: noob question - destructors - freeing memory... Juha Nieminen <nospam@thanks.invalid> - 2012-01-02 06:22 +0000
            Re: noob question - destructors - freeing memory... someone <newsboost@gmail.com> - 2012-01-02 18:03 +0100
  Re: noob question - destructors - freeing memory... "Bo Persson" <bop@gmb.dk> - 2011-12-31 12:51 +0100
    Re: noob question - destructors - freeing memory... someone <newsboost@gmail.com> - 2011-12-31 18:18 +0100

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