[PD-dev] Fwd: Allocating memory in externals

[Charles Henry]

Sounds interesting.  You probably want to read m_memory.c to see how
freebytes, copybytes, and the rest work.  See it here:
http://pure-data.cvs.sourceforge.net/pure-data/pd/src/m_memory.c?view=log

Chuck

On Nov 8, 2007 7:01 PM, Mike McGonagle <mjmogo at gmail.com> wrote:
> forgot to send to the list...
>
>
> ---------- Forwarded message ----------
> From: Mike McGonagle <mjmogo at gmail.com>
> Date: Nov 8, 2007 7:00 PM
> Subject: Re: [PD-dev] Allocating memory in externals
> To: Charles Henry <czhenry at gmail.com>
>
>
> I guess my real issue is that I am using an embedded piece of software
> which provides its own set of memory functions, so I was just
> wondering if there are any issues with mixing all these different
> memory models.
>
> Thanks,
>
> Mike
>
>
> On 11/8/07, Charles Henry <czhenry at gmail.com> wrote:
> > Hi, Mike,
> >   There are a few Pd-specific calls, although there is no harm AFAICT
> > (I have used them before, but I am not an expert) with using malloc(),
> > calloc(), or alloca().  In m_pd.h (v. 0.40.2 for example), you will
> > find:
> > /* --------------- memory management -------------------- */
> > EXTERN void *getbytes(size_t nbytes);
> > EXTERN void *getzbytes(size_t nbytes);
> > EXTERN void *copybytes(void *src, size_t nbytes);
> > EXTERN void freebytes(void *x, size_t nbytes);
> > EXTERN void *resizebytes(void *x, size_t oldsize, size_t newsize);
> >
> > for the pd-specific memory calls.
> >
> > Chuck
> >
> > On Nov 8, 2007 6:27 PM, Mike McGonagle <mjmogo at gmail.com> wrote:
> > > Hello all,
> > >
> > > I was wondering if there are any guidelines to allocating memory in an
> > > external? Is there any harm to using malloc/free? Or is there some
> > > PD-specific calls that should be used?
> > >
> > >
> > > Mike M
> > >
> > >
> > > --
> > > Help the Environment, Plant a Bush back in Texas!
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> > >
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>
> --
> Help the Environment, Plant a Bush back in Texas!
>
> "I place economy among the first and most important republican
> virtues, and public debt as the greatest of the dangers to be feared.
> To preserve our independence, we must not let our rulers load us with
> perpetual debt."
> -- Thomas Jefferson, third US president, architect and author (1743-1826)
>
> "Give Peace a Chance" -- John Lennon (9 October 1940 – 8 December 1980)
>
> Peace may sound simple—one beautiful word— but it requires everything
> we have, every quality, every strength, every dream, every high ideal.
> —Yehudi Menuhin (1916–1999), musician
>
> If you think you can, or you think you can't, you are probably right.
> —Mark Twain
>
> "Art may imitate life, but life imitates TV."
> Ani DiFranco
>
>
> --
>
> Help the Environment, Plant a Bush back in Texas!
>
> "I place economy among the first and most important republican
> virtues, and public debt as the greatest of the dangers to be feared.
> To preserve our independence, we must not let our rulers load us with
> perpetual debt."
> -- Thomas Jefferson, third US president, architect and author (1743-1826)
>
> "Give Peace a Chance" -- John Lennon (9 October 1940 – 8 December 1980)
>
> Peace may sound simple—one beautiful word— but it requires everything
> we have, every quality, every strength, every dream, every high ideal.
> —Yehudi Menuhin (1916–1999), musician
>
> If you think you can, or you think you can't, you are probably right.
> —Mark Twain
>
> "Art may imitate life, but life imitates TV."
> Ani DiFranco
>
> _______________________________________________
> PD-dev mailing list
> PD-dev at iem.at
> http://lists.puredata.info/listinfo/pd-dev
>