> What exactly does the "flags" parameter in csoundInitialize do? I couldn't
> find anything in the docs about it, but for some reason my host always
> crashes when it is set to 0, and works when nonzero...

The cause of the crash is the signal handler, in particular
SIGSEGV in the sigs[] array Top/csound.c:910

The flags for `csoundInitialize' are in csound.h:286

 #define CSOUNDINIT_NO_SIGNAL_HANDLER  1
 #define CSOUNDINIT_NO_ATEXIT          2

so `csoundInitialize(argc, argv, CSOUNDINIT_NO_SIGNAL_HANDLER)`
resolves your problem.

tito

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I presume that you know signals and signal handlers in general.
Csound "catches" some signals (see sigs[]) only to say

 Csound tidy up etc..

where "etc" is defined from csound.c:762

 Hangup
 Interrupt
 ...

With `CSOUNDINIT_NO_SIGNAL_HANDLER' you can handle (block, ignore, or other)
these signals in your app.

tito

On Tue, May 29, 2012 at 11:23:47PM -0700, Alex Weiss wrote:
> Thanks Tito, I just found it in the sources. Pardon my ignorance, but what
> exactly does the signal handler do, and why would/wouldn't I want it?
>
> Alex
>
> On Tue, May 29, 2012 at 11:20 PM, Tito Latini <tito.01beta@gmail.com> wrote:
>
> > > What exactly does the "flags" parameter in csoundInitialize do? I
> > couldn't
> > > find anything in the docs about it, but for some reason my host always
> > > crashes when it is set to 0, and works when nonzero...
> >
> > The cause of the crash is the signal handler, in particular
> > SIGSEGV in the sigs[] array Top/csound.c:910
> >
> > The flags for `csoundInitialize' are in csound.h:286
> >
> >  #define CSOUNDINIT_NO_SIGNAL_HANDLER  1
> >  #define CSOUNDINIT_NO_ATEXIT          2
> >
> > so `csoundInitialize(argc, argv, CSOUNDINIT_NO_SIGNAL_HANDLER)`
> > resolves your problem.
> >
> > tito

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