flux_fatal_set(3)

SYNOPSIS

#include <flux/core.h>

typedef void (*flux_fatal_f)(const char *msg, void *arg);

void flux_fatal_set (flux_t *h, flux_fatal_f fun, void *arg);

void flux_fatal_error (flux_t *h, const char *fun, const char *msg);

FLUX_FATAL (flux_t *h);

DESCRIPTION

flux_fatal_set() configures an optional fatal error function fun to be called internally by libflux_core if an error occurs that is fatal to the handle h. A fatal error is any error that renders the handle unusable. The function may log msg, terminate the program, or take other action appropriate to the application.

If a fatal error function is not registered, or if the fatal error function returns, error handling proceeds as normal.

The fatal error function will only be called once, for the first fatal error encountered.

arg is an optional argument passed through to the fatal error function.

FLUX_FATAL() is a macro that calls

::
flux_fatal_error (h, __FUNCTION__, strerror (errno))

which translates to a fatal error function called with msg set to "function name: error string".

SEE ALSO

flux_open(3)