Re: help with XS (Newx and

Without testing it and actually going from the perlapi documentation for Newxz, the following should give you an allocated buffer, filled with zeroes:

AirLorconDriver * l_packet;
Newxz( l_packet, 1, AirLorconDriver);

/* Remember to use SafeFree() to release the memory pointed to by l_pa
+cket */
[download]

Update: Also see perlguts for more discussion of Newx() and friends

Comment on Re: help with XS (Newx and Select or Download Code

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Re^2: help with XS (Newx and by Bpl (Scribe) on Sep 05, 2020 at 19:23 UTC
Hi! sorry if I ask, but the `Newxz( l_packet, 1, AirLorconDriver);` [download] would be referred to the memset or to the malloc function? because in the malloc case (`r = (AirLorconDriver ) malloc(sizeof(AirLorconDriver ) );`) there isn't any packet_l. thanks Edoardo Mantovani, 2020	[reply] [d/l] [select]
Re^3: help with XS (Newx and by Corion (Patriarch) on Sep 05, 2020 at 19:40 UTC
`Newxz` is a combined `malloc()` plus `memset()` call, see perlapi and perlguts on it. I think the usage would be to declare the pointer to your struct and then to have it allocated and zeroed like this: `Newxz( r, 1, AirLorconDriver );` [download]	[reply] [d/l] [select]