mirrors/core-lightning
1
0
Fork 0
mirror of https://github.com/ElementsProject/lightning.git synced 2025-03-03 10:46:58 +01:00
Code Issues Projects Releases Wiki Activity

HACKING.md: describe take() in more detail.

Browse source 
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This commit is contained in:
Rusty Russell 2018-01-04 09:19:04 +10:30
parent 9b129f7fb5
commit 758317387e
1 changed files with 5 additions and 2 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

7
doc/HACKING.md
View file

@ -22,8 +22,11 @@ to an array of `struct bitcoin_tx_input`; they are allocated off the
all. Tal also supports destructors, which are usually used to remove
things from lists, etc.
Some routines use take() to indicate whether they should take ownership
of a pointer. Use this sparingly, as it can be very confusing.
Some routines use take(): take() marks a pointer as to be consumed
(e.g. freed automatically before return) by a called function. It can
safely accept NULL pointers. Functions whose prototype in headers has
the macro TAKES can have the specific argument as a take() call. Use
this sparingly, as it can be very confusing.
The more complex daemons use async io (ccan/io): you register callbacks and they
happen once I/O is available, then you return what to do next. This