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From: fjh@mundook.cs.mu.OZ.AU (Fergus Henderson)
Subject: Re: Garbage Collection in Ada
Date: 1996/10/23
Date: 1996-10-23T00:00:00+00:00	[thread overview]
Message-ID: <54kc0t$ovd@mulga.cs.mu.OZ.AU> (raw)
In-Reply-To: Dzos04.A7L.0.-s@inmet.camb.inmet.com


mg@dsd.camb.inmet.com (Mitch Gart) writes:

>What I don't like is the idea that the GC will have to go through ALL
>data memory (and registers) looking for pointers.  The time it takes
>to make a scan is proportional to total memory size rather than proportional
>to the number of pointers in use, or proportional to the number of 
>heap blocks, or proportional to some other reasonable value.

With the Boehm GC, memory that does not contain any pointers,
such as strings, bit-vectors, arrays of ints, and so forth,
can be allocated using GC_malloc_atomic() rather than GC_malloc().
If you use GC_malloc_atomic() to allocate data areas that will
not contain pointers, then the GC will not scan those data areas.

--
Fergus Henderson <fjh@cs.mu.oz.au>   |  "I have always known that the pursuit
WWW: <http://www.cs.mu.oz.au/~fjh>   |  of excellence is a lethal habit"
PGP: finger fjh@128.250.37.3         |     -- the last words of T. S. Garp.




  parent reply	other threads:[~1996-10-23  0:00 UTC|newest]

Thread overview: 126+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
1996-10-13  0:00 Garbage Collection in Ada Jonas Nygren
1996-10-13  0:00 ` Lars Farm
1996-10-13  0:00   ` Larry Kilgallen
1996-10-13  0:00   ` Robert Dewar
     [not found]     ` <19961014115513529729@dialup105-2-16.swipnet.se>
1996-10-16  0:00       ` Robert Dewar
1996-10-16  0:00         ` Lars Farm
1996-10-16  0:00           ` Robert Dewar
1996-10-16  0:00             ` Hans-Juergen Boehm
1996-10-17  0:00               ` Robert A Duff
1996-10-17  0:00                 ` Hans-Juergen Boehm
1996-10-17  0:00                 ` Larry Kilgallen
1996-10-17  0:00               ` Robert Dewar
1996-10-17  0:00                 ` Hans-Juergen Boehm
1996-10-17  0:00             ` Lars Farm
1996-10-23  0:00               ` Robert Dewar
1996-10-16  0:00         ` Hans-Juergen Boehm
1996-10-16  0:00           ` Robert Dewar
1996-10-16  0:00             ` Hans-Juergen Boehm
1996-10-17  0:00               ` Robert Dewar
1996-10-17  0:00                 ` Hans-Juergen Boehm
1996-10-17  0:00                   ` Robert Dewar
1996-10-14  0:00   ` John Howard
1996-10-15  0:00     ` Lars Farm
1996-10-15  0:00       ` Robert Dewar
1996-10-15  0:00         ` Lars Farm
1996-10-15  0:00         ` Hans-Juergen Boehm
1996-10-17  0:00         ` Thomas Kendelbacher
1996-10-17  0:00           ` Robert Dewar
1996-10-23  0:00         ` Richard A. O'Keefe
1996-10-23  0:00           ` Larry Kilgallen
1996-10-15  0:00       ` Robert A Duff
1996-10-14  0:00   ` Robert A Duff
1996-10-14  0:00     ` Lars Farm
1996-10-15  0:00       ` Robert A Duff
1996-10-16  0:00         ` Lars Farm
1996-10-16  0:00           ` Robert Dewar
1996-10-17  0:00             ` Robert A Duff
1996-10-19  0:00               ` Richard Kenner
1996-10-19  0:00               ` Robert Dewar
1996-10-19  0:00                 ` Lars Farm
1996-10-20  0:00                   ` Robert Dewar
1996-10-20  0:00                     ` Robert A Duff
1996-10-20  0:00                       ` Robert Dewar
1996-10-21  0:00                     ` Geert Bosch
1996-10-21  0:00                       ` Hans-Juergen Boehm
1996-10-21  0:00                     ` Lars Farm
1996-10-21  0:00                       ` Robert Dewar
1996-10-21  0:00                         ` Lars Farm
1996-10-23  0:00                     ` Fergus Henderson
1996-10-24  0:00                     ` Richard A. O'Keefe
1996-10-20  0:00                 ` Robert A Duff
1996-10-20  0:00                   ` Robert Dewar
1996-10-21  0:00                     ` Hans-Juergen Boehm
1996-10-21  0:00                       ` Robert Dewar
1996-10-15  0:00     ` Hans-Juergen Boehm
1996-10-15  0:00   ` Keith Thompson
1996-10-13  0:00 ` Robert Dewar
1996-10-14  0:00 ` Jon S Anthony
1996-10-15  0:00   ` Robert Dewar
1996-10-15  0:00 ` Hannes Haug
1996-10-15  0:00 ` Robert I. Eachus
1996-10-15  0:00   ` Robert Dewar
1996-10-16  0:00   ` whiting_ms@corning.com (Matt Whiting)
1996-10-16  0:00     ` Robert Dewar
1996-10-17  0:00   ` John Howard
1996-10-17  0:00     ` Robert Dewar
1996-10-18  0:00       ` Lars Farm
1996-10-19  0:00         ` Robert Dewar
1996-10-20  0:00           ` Lars Farm
1996-10-21  0:00             ` Nicolay Belofastow
1996-10-21  0:00               ` Robert Dewar
1996-10-21  0:00             ` Robert Dewar
1996-10-22  0:00               ` Lars Farm
1996-10-20  0:00         ` Robert A Duff
1996-10-20  0:00           ` Robert Dewar
1996-10-22  0:00         ` Mitch Gart
1996-10-23  0:00           ` Hans-Juergen Boehm
1996-10-27  0:00             ` Richard Riehle
1996-10-23  0:00           ` Fergus Henderson [this message]
1996-10-29  0:00         ` Jon S Anthony
1996-10-30  0:00         ` Jon S Anthony
1996-10-30  0:00         ` James Rogers
1996-10-30  0:00         ` Brian Rogoff
1996-10-30  0:00         ` Jonas Nygren
1996-10-18  0:00       ` Hans-Juergen Boehm
1996-10-18  0:00       ` Lars Farm
1996-10-20  0:00         ` Robert A Duff
1996-10-16  0:00 ` Jon S Anthony
1996-10-16  0:00 ` Jon S Anthony
1996-10-16  0:00 ` Jon S Anthony
1996-10-16  0:00 ` Jon S Anthony
1996-10-17  0:00   ` Robert Dewar
1996-10-16  0:00 ` Ole-Hjalmar Kristensen FOU.TD/DELAB
1996-10-16  0:00   ` Robert Dewar
1996-10-17  0:00 ` Rick Hudson
1996-10-17  0:00 ` Hans-Juergen Boehm
1996-10-17  0:00 ` Robert I. Eachus
1996-10-17  0:00   ` Robert Dewar
1996-10-17  0:00     ` Richard Kenner
1996-10-18  0:00 ` Jon S Anthony
1996-10-23  0:00   ` Robert Dewar
1996-10-18  0:00 ` Rick Hudson
1996-10-18  0:00 ` Jon S Anthony
1996-10-18  0:00   ` Robert Dewar
1996-10-21  0:00 ` Laurent Pautet
1996-10-21  0:00 ` Jon S Anthony
1996-10-22  0:00 ` Tapani Rundgren
1996-10-22  0:00 ` Jon S Anthony
1996-10-23  0:00 ` Jon S Anthony
1996-10-24  0:00   ` Mitch Gart
1996-10-24  0:00 ` Robert I. Eachus
1996-10-24  0:00 ` Hans-Juergen Boehm
1996-10-25  0:00 ` Jon S Anthony
1996-10-28  0:00 ` Robert I. Eachus
1996-10-29  0:00 ` Hans-Juergen Boehm
  -- strict thread matches above, loose matches on Subject: below --
1996-11-02  0:00 Jon S Anthony
     [not found] <01bbc6a3$4cf03480$829d6482@joy.ericsson.se>
1996-10-31  0:00 ` Mitch Gart
1996-10-31  0:00   ` Jonas Nygren
1996-11-03  0:00   ` Matthew Heaney
1996-11-06  0:00     ` Robert A Duff
1996-11-06  0:00       ` Norman H. Cohen
1996-11-01  0:00 ` Jon S Anthony
1996-11-06  0:00 ` Brian Rogoff
1996-11-07  0:00   ` Tucker Taft
1996-10-22  0:00 Brian Rogoff
1996-10-11  0:00 C++ Standardization (was: Once again, Ada absent from DoD SBIR solicitation) Dave Wood
1996-10-17  0:00 ` Garbage Collection in Ada Thomas Kendelbacher
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