Le 10/05/2017 à 17:20, Stéphane Ancelot a écrit :
Le 10/05/2017 à 17:06, Henning Schild a écrit :
Hi,
today i have to a question from an application developers point of
view. How do i override the default value of a tunable when libcobalt
is linked with dlopen()?
This article https://xenomai.org/2015/05/application-setup-and-init/
describes the tunables but not the dso-case.
this may help you.
#include <xenomai/init.h>
#include <xenomai/tunables.h>
static int foo_tune(void)
{
set_config_tunable(mem_pool_size,5000000);
printf("mem pool size=%ld\n", get_config_tunable(mem_pool_size));
return 0; /* Success, otherwise -errno */
}
/*
* CAUTION: we assume that all omitted handlers are zeroed
* due to the static storage class. Make sure to initialize them
* explicitly to NULL if the descriptor belongs to the .data
* section instead.
*/
static struct setup_descriptor foo_setup = {
.name = "foo",
.tune = foo_tune,
.parse_option = NULL,
.help = NULL,
.init = NULL,
.options = NULL,
};
/* Register the setup descriptor. */
user_setup_call(foo_setup);
char **fakeargv;
int *fakeargc;
#ifdef __COBALT__
fakeargc = (int*)malloc(sizeof(int));
*fakeargc =1;
fakeargv = (char**)malloc(2*sizeof(char*));
fakeargv[0] = (char*)malloc(7);
strcpy(fakeargv[0],"python");
fakeargv[1] = NULL;
xenomai_init(fakeargc,(char* const**)&fakeargv);
#endif
Is there a way to override the default values when using dlopen()?
Maybe delaying the call to the constructors, or passing some arguments
to them?
kind regards,
Henning
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