Re: [Cs-dev] dynamically load csoundlib?

Date	2006-09-14 09:40
From	Victor Lazzarini
Subject	Re: [Cs-dev] dynamically load csoundlib?
	You can use dlopen and dlsym on the Mac, but there are also MACH-specific functions to do that as well. Victor At 19:41 13/09/2006, you wrote: >I'm no Mac expert. What you want to do is possible both on Windows with >LoadLibrary and GetProcAddr, and on Linux/Unix with dlopen and dlsym. I >would _think_ that the latter, or close to it, is possible on OS X. > >Anyway, the function pointers will be in the CSOUND struct. If a dlopen'd >plugin can call a pointer off the CSOUND struct, which it can, then I >think it should work the other way too, that a host could call a pointer >off a CSOUND struct from csoundCreate. > >Regards, >Mike > >-----Original Message----- > >From: matt ingalls > >Sent: Sep 13, 2006 1:33 PM > >To: Victor.Lazzarini@nuim.ie, Developer discussions > > >Subject: Re: [Cs-dev] dynamically load csoundlib? > > > > > >On Sep 12, 2006, at 11:20 AM, Victor Lazzarini wrote: > > > >> When you say static, do you actually mean linked against > >> a dynamic lib? Because static really means the actual > >> code being statically loaded into the executable. > > > >sorry, yes - that's what i meant. > > > >> Well, as far as I know CsoundLib is designed to be linked > >> against, rather than loaded at runtime. But this does not > >> mean it can't be done. Generally (well you know this > >> already) bundles are loaded at runtime and dylibs linked > >> against. But dylibs can be loaded at runtime, plugin > >> opcodes are dylibs that are used like that. > >> > >> I am just wondering whether it will be more of a headache > >> to do this that it might not be worth it. > > > >well i am not suggesting to eliminate how it currently works, i > >was just wondering if it was possible to do it all at run-time. > > how i did with with csound4, was i loaded the the csoundLib, then > >i grabbed the API function > >pointers from the CSOUND struct and call the functions that way. > >i don't know if this is possible with csound5, or if the function > >pointers > >are just for the opcode plugins -- i guess i should just look at the > >code, > >huh?? > > > >another way around this is to try to have CsoundLib.framework inside my > >application bundle ( although i think this might come close to violating > >the license). or perhaps the most simplest way is distribute the > >csoundlib > >and supportlibs with my installer. > > > >thanks, > >m > > > >> > >> Victor > >>> > >>> does any csound front end load the csoundlib dynamically? > >>> and how it would this work -- do you need to make calls to > >>> find pointers to the API functions or ?? > >>> > >>> i used to do this with csound4, but now with csound5 i > >>> statically link to it. > >>> the downside is that if the csoundLib isn't installed (or > >>> perhaps just an incompatible version?) > >>> my host app will not even launch. i can live with that, > >>> but i could see in the future having > >>> this or other applications where csound is optional and i > >>> would want to use my app > >>> even when csoundLib is not installed. > >>> > >>> thanks, > >>> m > >>> > >>> ---------------------------------------------------------- > >>> --------------- Using Tomcat but need to do more? Need to > >>> support web services, security? Get stuff done quickly > >>> with pre-integrated technology to make your job easier > >>> Download IBM WebSphere Application Server v.1.0.1 based on > >>> Apache Geronimo > >>> > >> http://sel.as-us.falkag.net/sel? > >> cmd=lnk&kid=120709&bid=263057&dat=121642 > >>> _______________________________________________ > >>> Csound-devel mailing list > >>> Csound-devel@lists.sourceforge.net > >>> https://lists.sourceforge.net/lists/listinfo/csound-devel > >> > >> ---------------------------------------------------------------------- > >> --- > >> Using Tomcat but need to do more? Need to support web services, > >> security? > >> Get stuff done quickly with pre-integrated technology to make your > >> job easier > >> Download IBM WebSphere Application Server v.1.0.1 based on Apache > >> Geronimo > >> http://sel.as-us.falkag.net/sel? > >> cmd=lnk&kid=120709&bid=263057&dat=121642 > >> _______________________________________________ > >> Csound-devel mailing list > >> Csound-devel@lists.sourceforge.net > >> https://lists.sourceforge.net/lists/listinfo/csound-devel > >> > > > > > >------------------------------------------------------------------------- > >Using Tomcat but need to do more? Need to support web services, security? > >Get stuff done quickly with pre-integrated technology to make your job > easier > >Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo > >http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 > >_______________________________________________ > >Csound-devel mailing list > >Csound-devel@lists.sourceforge.net > >https://lists.sourceforge.net/lists/listinfo/csound-devel > > > > >------------------------------------------------------------------------- >Using Tomcat but need to do more? Need to support web services, security? >Get stuff done quickly with pre-integrated technology to make your job easier >Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo >http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 >_______________________________________________ >Csound-devel mailing list >Csound-devel@lists.sourceforge.net >https://lists.sourceforge.net/lists/listinfo/csound-devel Victor Lazzarini Music Technology Laboratory Music Department National University of Ireland, Maynooth ------------------------------------------------------------------------- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 _______________________________________________ Csound-devel mailing list Csound-devel@lists.sourceforge.net

Date	2006-09-14 12:01
From	Victor Lazzarini
Subject	Re: [Cs-dev] dynamically load csoundlib?
	Just a thought: isn't this a perversion of the principles of the API? If you get pointers to stuff in CSOUND*, you are actually bypassing the public API, and has access to everything. Not saying it is a problem, since you know what you are doing. But it is a bit naughty :) Victor At 09:40 14/09/2006, you wrote: >You can use dlopen and dlsym on the Mac, but there are also MACH-specific >functions to do that as well. > >Victor > >At 19:41 13/09/2006, you wrote: > >I'm no Mac expert. What you want to do is possible both on Windows with > >LoadLibrary and GetProcAddr, and on Linux/Unix with dlopen and dlsym. I > >would _think_ that the latter, or close to it, is possible on OS X. > > > >Anyway, the function pointers will be in the CSOUND struct. If a dlopen'd > >plugin can call a pointer off the CSOUND struct, which it can, then I > >think it should work the other way too, that a host could call a pointer > >off a CSOUND struct from csoundCreate. > > > >Regards, > >Mike > > > >-----Original Message----- > > >From: matt ingalls > > >Sent: Sep 13, 2006 1:33 PM > > >To: Victor.Lazzarini@nuim.ie, Developer discussions > > > > >Subject: Re: [Cs-dev] dynamically load csoundlib? > > > > > > > > >On Sep 12, 2006, at 11:20 AM, Victor Lazzarini wrote: > > > > > >> When you say static, do you actually mean linked against > > >> a dynamic lib? Because static really means the actual > > >> code being statically loaded into the executable. > > > > > >sorry, yes - that's what i meant. > > > > > >> Well, as far as I know CsoundLib is designed to be linked > > >> against, rather than loaded at runtime. But this does not > > >> mean it can't be done. Generally (well you know this > > >> already) bundles are loaded at runtime and dylibs linked > > >> against. But dylibs can be loaded at runtime, plugin > > >> opcodes are dylibs that are used like that. > > >> > > >> I am just wondering whether it will be more of a headache > > >> to do this that it might not be worth it. > > > > > >well i am not suggesting to eliminate how it currently works, i > > >was just wondering if it was possible to do it all at run-time. > > > how i did with with csound4, was i loaded the the csoundLib, then > > >i grabbed the API function > > >pointers from the CSOUND struct and call the functions that way. > > >i don't know if this is possible with csound5, or if the function > > >pointers > > >are just for the opcode plugins -- i guess i should just look at the > > >code, > > >huh?? > > > > > >another way around this is to try to have CsoundLib.framework inside my > > >application bundle ( although i think this might come close to violating > > >the license). or perhaps the most simplest way is distribute the > > >csoundlib > > >and supportlibs with my installer. > > > > > >thanks, > > >m > > > > > >> > > >> Victor > > >>> > > >>> does any csound front end load the csoundlib dynamically? > > >>> and how it would this work -- do you need to make calls to > > >>> find pointers to the API functions or ?? > > >>> > > >>> i used to do this with csound4, but now with csound5 i > > >>> statically link to it. > > >>> the downside is that if the csoundLib isn't installed (or > > >>> perhaps just an incompatible version?) > > >>> my host app will not even launch. i can live with that, > > >>> but i could see in the future having > > >>> this or other applications where csound is optional and i > > >>> would want to use my app > > >>> even when csoundLib is not installed. > > >>> > > >>> thanks, > > >>> m > > >>> > > >>> ---------------------------------------------------------- > > >>> --------------- Using Tomcat but need to do more? Need to > > >>> support web services, security? Get stuff done quickly > > >>> with pre-integrated technology to make your job easier > > >>> Download IBM WebSphere Application Server v.1.0.1 based on > > >>> Apache Geronimo > > >>> > > >> http://sel.as-us.falkag.net/sel? > > >> cmd=lnk&kid=120709&bid=263057&dat=121642 > > >>> _______________________________________________ > > >>> Csound-devel mailing list > > >>> Csound-devel@lists.sourceforge.net > > >>> https://lists.sourceforge.net/lists/listinfo/csound-devel > > >> > > >> ---------------------------------------------------------------------- > > >> --- > > >> Using Tomcat but need to do more? Need to support web services, > > >> security? > > >> Get stuff done quickly with pre-integrated technology to make your > > >> job easier > > >> Download IBM WebSphere Application Server v.1.0.1 based on Apache > > >> Geronimo > > >> http://sel.as-us.falkag.net/sel? > > >> cmd=lnk&kid=120709&bid=263057&dat=121642 > > >> _______________________________________________ > > >> Csound-devel mailing list > > >> Csound-devel@lists.sourceforge.net > > >> https://lists.sourceforge.net/lists/listinfo/csound-devel > > >> > > > > > > > > >------------------------------------------------------------------------- > > >Using Tomcat but need to do more? Need to support web services, security? > > >Get stuff done quickly with pre-integrated technology to make your job > > easier > > >Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo > > >http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 > > >_______________________________________________ > > >Csound-devel mailing list > > >Csound-devel@lists.sourceforge.net > > >https://lists.sourceforge.net/lists/listinfo/csound-devel > > > > > > > > > >------------------------------------------------------------------------- > >Using Tomcat but need to do more? Need to support web services, security? > >Get stuff done quickly with pre-integrated technology to make your job > easier > >Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo > >http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 > >_______________________________________________ > >Csound-devel mailing list > >Csound-devel@lists.sourceforge.net > >https://lists.sourceforge.net/lists/listinfo/csound-devel > >Victor Lazzarini >Music Technology Laboratory >Music Department >National University of Ireland, Maynooth > > >------------------------------------------------------------------------- >Using Tomcat but need to do more? Need to support web services, security? >Get stuff done quickly with pre-integrated technology to make your job easier >Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo >http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 >_______________________________________________ >Csound-devel mailing list >Csound-devel@lists.sourceforge.net >https://lists.sourceforge.net/lists/listinfo/csound-devel Victor Lazzarini Music Technology Laboratory Music Department National University of Ireland, Maynooth ------------------------------------------------------------------------- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 _______________________________________________ Csound-devel mailing list Csound-devel@lists.sourceforge.net