[Cs-dev] Csound memory allocation functions

[Cs-dev] Csound memory allocation functions

Date	2014-10-15 20:06
From	Edward Costello
Subject	[Cs-dev] Csound memory allocation functions
	Hi, I was just wondering is it best practice to use Csounds malloc/calloc etc. rather than the ones in the the standard C library, and if so why? Thanks Ed ------------------------------------------------------------------------------ Comprehensive Server Monitoring with Site24x7. Monitor 10 servers for $9/Month. Get alerted through email, SMS, voice calls or mobile push notifications. Take corrective actions from your mobile device. http://p.sf.net/sfu/Zoho _______________________________________________ Csound-devel mailing list Csound-devel@lists.sourceforge.net

Date	2014-10-15 20:10
From	Victor Lazzarini
Subject	Re: [Cs-dev] Csound memory allocation functions
	yes, unless you are using it for a very short time. ======================== Dr Victor Lazzarini Dean of Arts, Celtic Studies and Philosophy, Maynooth University, Maynooth, Co Kildare, Ireland Tel: 00 353 7086936 Fax: 00 353 1 7086952 On 15 Oct 2014, at 20:06, Edward Costello wrote: > Hi, > > I was just wondering is it best practice to use Csounds malloc/calloc etc. rather than the ones in the the standard C library, and if so why? > Thanks > Ed > ------------------------------------------------------------------------------ > Comprehensive Server Monitoring with Site24x7. > Monitor 10 servers for $9/Month. > Get alerted through email, SMS, voice calls or mobile push notifications. > Take corrective actions from your mobile device. > http://p.sf.net/sfu/Zoho > _______________________________________________ > Csound-devel mailing list > Csound-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/csound-devel ------------------------------------------------------------------------------ Comprehensive Server Monitoring with Site24x7. Monitor 10 servers for $9/Month. Get alerted through email, SMS, voice calls or mobile push notifications. Take corrective actions from your mobile device. http://p.sf.net/sfu/Zoho _______________________________________________ Csound-devel mailing list Csound-devel@lists.sourceforge.net

Date	2014-10-15 20:17
From	Steven Yi
Subject	Re: [Cs-dev] Csound memory allocation functions
	I would venture to say it would be best to use all of the time. Csound's memalloc code will track memory that is allocated and free it (if not explicitly freed already) when csound is reset. Also, it is possible to replace csound's memory allocation functions with others; a host might want to implement their own memory allocation strategy and set that on the Csound instance. If the opcode does not use csound->Malloc, then it won't use that strategy. On Wed, Oct 15, 2014 at 3:10 PM, Victor Lazzarini wrote: > yes, unless you are using it for a very short time. > ======================== > Dr Victor Lazzarini > Dean of Arts, Celtic Studies and Philosophy, > Maynooth University, > Maynooth, Co Kildare, Ireland > Tel: 00 353 7086936 > Fax: 00 353 1 7086952 > > On 15 Oct 2014, at 20:06, Edward Costello wrote: > >> Hi, >> >> I was just wondering is it best practice to use Csounds malloc/calloc etc. rather than the ones in the the standard C library, and if so why? >> Thanks >> Ed >> ------------------------------------------------------------------------------ >> Comprehensive Server Monitoring with Site24x7. >> Monitor 10 servers for $9/Month. >> Get alerted through email, SMS, voice calls or mobile push notifications. >> Take corrective actions from your mobile device. >> http://p.sf.net/sfu/Zoho >> _______________________________________________ >> Csound-devel mailing list >> Csound-devel@lists.sourceforge.net >> https://lists.sourceforge.net/lists/listinfo/csound-devel > > > ------------------------------------------------------------------------------ > Comprehensive Server Monitoring with Site24x7. > Monitor 10 servers for $9/Month. > Get alerted through email, SMS, voice calls or mobile push notifications. > Take corrective actions from your mobile device. > http://p.sf.net/sfu/Zoho > _______________________________________________ > Csound-devel mailing list > Csound-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/csound-devel ------------------------------------------------------------------------------ Comprehensive Server Monitoring with Site24x7. Monitor 10 servers for $9/Month. Get alerted through email, SMS, voice calls or mobile push notifications. Take corrective actions from your mobile device. http://p.sf.net/sfu/Zoho _______________________________________________ Csound-devel mailing list Csound-devel@lists.sourceforge.net

Date	2014-10-15 20:34
From	Edward Costello
Subject	Re: [Cs-dev] Csound memory allocation functions
	Thanks, I’ll be sure to just use them always then, do you still have to explicitly call csound->Free if you used csound->Malloc? If for instance you allocate data for an array output from an opcode, do you need to register a de-init callback and free that memory using csound->Free? > On 15 Oct 2014, at 21:17, Steven Yi wrote: > > I would venture to say it would be best to use all of the time. > Csound's memalloc code will track memory that is allocated and free it > (if not explicitly freed already) when csound is reset. Also, it is > possible to replace csound's memory allocation functions with others; > a host might want to implement their own memory allocation strategy > and set that on the Csound instance. If the opcode does not use > csound->Malloc, then it won't use that strategy. > > On Wed, Oct 15, 2014 at 3:10 PM, Victor Lazzarini > wrote: >> yes, unless you are using it for a very short time. >> ======================== >> Dr Victor Lazzarini >> Dean of Arts, Celtic Studies and Philosophy, >> Maynooth University, >> Maynooth, Co Kildare, Ireland >> Tel: 00 353 7086936 >> Fax: 00 353 1 7086952 >> >> On 15 Oct 2014, at 20:06, Edward Costello wrote: >> >>> Hi, >>> >>> I was just wondering is it best practice to use Csounds malloc/calloc etc. rather than the ones in the the standard C library, and if so why? >>> Thanks >>> Ed >>> ------------------------------------------------------------------------------ >>> Comprehensive Server Monitoring with Site24x7. >>> Monitor 10 servers for $9/Month. >>> Get alerted through email, SMS, voice calls or mobile push notifications. >>> Take corrective actions from your mobile device. >>> http://p.sf.net/sfu/Zoho >>> _______________________________________________ >>> Csound-devel mailing list >>> Csound-devel@lists.sourceforge.net >>> https://lists.sourceforge.net/lists/listinfo/csound-devel >> >> >> ------------------------------------------------------------------------------ >> Comprehensive Server Monitoring with Site24x7. >> Monitor 10 servers for $9/Month. >> Get alerted through email, SMS, voice calls or mobile push notifications. >> Take corrective actions from your mobile device. >> http://p.sf.net/sfu/Zoho >> _______________________________________________ >> Csound-devel mailing list >> Csound-devel@lists.sourceforge.net >> https://lists.sourceforge.net/lists/listinfo/csound-devel > > ------------------------------------------------------------------------------ > Comprehensive Server Monitoring with Site24x7. > Monitor 10 servers for $9/Month. > Get alerted through email, SMS, voice calls or mobile push notifications. > Take corrective actions from your mobile device. > http://p.sf.net/sfu/Zoho > _______________________________________________ > Csound-devel mailing list > Csound-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/csound-devel ------------------------------------------------------------------------------ Comprehensive Server Monitoring with Site24x7. Monitor 10 servers for $9/Month. Get alerted through email, SMS, voice calls or mobile push notifications. Take corrective actions from your mobile device. http://p.sf.net/sfu/Zoho _______________________________________________ Csound-devel mailing list Csound-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listi

Date	2014-10-15 20:43
From	Victor Lazzarini
Subject	Re: [Cs-dev] Csound memory allocation functions
	yes. But you should use AuxAlloc instead of Malloc etc in opcodes, and then you don’t need to free it. AuxAlloc should be used because it’s the right memory mechanism for opcodes. Regards ======================== Dr Victor Lazzarini Dean of Arts, Celtic Studies and Philosophy, Maynooth University, Maynooth, Co Kildare, Ireland Tel: 00 353 7086936 Fax: 00 353 1 7086952 On 15 Oct 2014, at 20:34, Edward Costello wrote: > Thanks, I’ll be sure to just use them always then, do you still have to explicitly call csound->Free if you used csound->Malloc? If for instance you allocate data for an array output from an opcode, do you need to register a de-init callback and free that memory using csound->Free? > > >> On 15 Oct 2014, at 21:17, Steven Yi wrote: >> >> I would venture to say it would be best to use all of the time. >> Csound's memalloc code will track memory that is allocated and free it >> (if not explicitly freed already) when csound is reset. Also, it is >> possible to replace csound's memory allocation functions with others; >> a host might want to implement their own memory allocation strategy >> and set that on the Csound instance. If the opcode does not use >> csound->Malloc, then it won't use that strategy. >> >> On Wed, Oct 15, 2014 at 3:10 PM, Victor Lazzarini >> wrote: >>> yes, unless you are using it for a very short time. >>> ======================== >>> Dr Victor Lazzarini >>> Dean of Arts, Celtic Studies and Philosophy, >>> Maynooth University, >>> Maynooth, Co Kildare, Ireland >>> Tel: 00 353 7086936 >>> Fax: 00 353 1 7086952 >>> >>> On 15 Oct 2014, at 20:06, Edward Costello wrote: >>> >>>> Hi, >>>> >>>> I was just wondering is it best practice to use Csounds malloc/calloc etc. rather than the ones in the the standard C library, and if so why? >>>> Thanks >>>> Ed >>>> ------------------------------------------------------------------------------ >>>> Comprehensive Server Monitoring with Site24x7. >>>> Monitor 10 servers for $9/Month. >>>> Get alerted through email, SMS, voice calls or mobile push notifications. >>>> Take corrective actions from your mobile device. >>>> http://p.sf.net/sfu/Zoho >>>> _______________________________________________ >>>> Csound-devel mailing list >>>> Csound-devel@lists.sourceforge.net >>>> https://lists.sourceforge.net/lists/listinfo/csound-devel >>> >>> >>> ------------------------------------------------------------------------------ >>> Comprehensive Server Monitoring with Site24x7. >>> Monitor 10 servers for $9/Month. >>> Get alerted through email, SMS, voice calls or mobile push notifications. >>> Take corrective actions from your mobile device. >>> http://p.sf.net/sfu/Zoho >>> _______________________________________________ >>> Csound-devel mailing list >>> Csound-devel@lists.sourceforge.net >>> https://lists.sourceforge.net/lists/listinfo/csound-devel >> >> ------------------------------------------------------------------------------ >> Comprehensive Server Monitoring with Site24x7. >> Monitor 10 servers for $9/Month. >> Get alerted through email, SMS, voice calls or mobile push notifications. >> Take corrective actions from your mobile device. >> http://p.sf.net/sfu/Zoho >> _______________________________________________ >> Csound-devel mailing list >> Csound-devel@lists.sourceforge.net >> https://lists.sourceforge.net/lists/listinfo/csound-devel > > > ------------------------------------------------------------------------------ > Comprehensive Server Monitoring with Site24x7. > Monitor 10 servers for $9/Month. > Get alerted through email, SMS, voice calls or mobile push notifications. > Take corrective actions from your mobile device. > http://p.sf.net/sfu/Zoho > _______________________________________________ > Csound-devel mailing list > Csound-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/csound-devel ------------------------------------------------------------------------------ Comprehensive Server Monitoring with Site24x7. Monitor 10 servers for $9/Month. Get alerted through email, SMS, voice calls or mobile push notifications. Take corrective actions from your mobile device. http://p.sf.net/sfu/Zoho _______________________________________________ Csound-devel mailing list Csound-devel@lists.sourceforge.net