I would instead use a new flag to specify a signal sent on the child
death. Like RFTSIGZMB. If flag is not set, SIGCHLD is used. If it is
set, the bit slice is used as signal number, 0 means do not send any
signal.
Please note that the signal should be checked for validity, it must be
<= _SIG_MAXSIG).
We used this:
#define RFTHPNSHIFT 24 /* reserve bits 24-30 */
#define RFTHPNMASK 0x7F /* for compatibility with linuxthreads/clone()
*/
/* allow to specify "clone exit parent
notification" signal */
#define RFTHPNSIGNUM(flags) (((flags) >> RFTHPNSHIFT) & RFTHPNMASK)
Therefore signal #128 (_SIG_MAXSIG) cannot be selected.
Should the bit slice be 7 or 8 bits ?
Petr
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