Erlang Central

Difference between revisions of "Adding my own BIF"

From ErlangCentral Wiki

Line 1:Line 1:
 +
===steps===
 
:1. run configure
 
:1. run configure
 
:2. add your bifs to erts/emulator/beam/bif.tab
 
:2. add your bifs to erts/emulator/beam/bif.tab
Line 22:Line 23:
 
</pre>
 
</pre>
 
:6. run make; make install
 
:6. run make; make install
 
+
===notes===
 
steps 0-3 need only be done once.
 
steps 0-3 need only be done once.
  

Revision as of 17:09, 31 July 2006

steps

1. run configure
2. add your bifs to erts/emulator/beam/bif.tab

bif re:grep/2 bif re:compile/1

3. create a C file

erts/emulator/beam/erl_bif_re.c

4. add your C file to erts/emulator/<arch>/Makefile

RUN_OBJS = $(OBJDIR)/erl_bif_re.o \

5. implement your bifs by stealing bits from existing erl_bif_*.c files
BIF_RETTYPE re_grep_2(BIF_ALIST_2){
  Eterm result;
  result = magic_function(); 
  BIF_RET(result);
}
6. run make; make install

notes

steps 0-3 need only be done once.

note that if you add

bif re:grep/2

to bif.tab there should be a erl_bif_re.c that implements

BIF_RETTYPE re_grep_2(BIF_ALIST_2);