/doc/efun/set_heart_beat

SYNOPSIS

int set_heart_beat(int flag)

DESCRIPTION

Enable or disable heart beat. The driver will apply the lfun heart_beat() to the current object every 2 seconds, if it is enabled. If the heart beat is not needed for the moment, then do disable it. This will reduce system overhead.

Return true for success, and false for failure. Specifically, it will fail if the heart beat function has been disabled, which it will be if there is a run time error in it. Disabling an already disabled heart beat (and vice versa enabling and enabled heart beat) also counts as failure.

SEE ALSO

call_out

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