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| author | Björn-Egil Dahlberg <[email protected]> | 2014-06-11 23:27:06 +0200 |
|---|---|---|
| committer | Björn-Egil Dahlberg <[email protected]> | 2014-07-11 16:55:07 +0200 |
| commit | e1f903d5210fb5b91ff47229fb57bf3b0edeb79e (patch) | |
| tree | 8914b206c75b8cb918a523436a220c670cbd34e3 /erts | |
| parent | 9a1419a7d4325085dc2235a8531d77e1d96ea689 (diff) | |
| download | otp-e1f903d5210fb5b91ff47229fb57bf3b0edeb79e.tar.gz otp-e1f903d5210fb5b91ff47229fb57bf3b0edeb79e.tar.bz2 otp-e1f903d5210fb5b91ff47229fb57bf3b0edeb79e.zip | |
erts: Introduce erlang:fun_info_mfa/1
Introduced for proc_lib:init_p/3
Diffstat (limited to 'erts')
| -rw-r--r-- | erts/emulator/beam/bif.tab | 4 | ||||
| -rw-r--r-- | erts/emulator/beam/erl_bif_info.c | 19 | ||||
| -rw-r--r-- | erts/preloaded/src/erlang.erl | 11 |
3 files changed, 33 insertions, 1 deletions
diff --git a/erts/emulator/beam/bif.tab b/erts/emulator/beam/bif.tab index 011e49f1fe..e68b8e6274 100644 --- a/erts/emulator/beam/bif.tab +++ b/erts/emulator/beam/bif.tab @@ -601,6 +601,10 @@ bif maps:values/1 bif erts_internal:cmp_term/2 # +# New in 17.1. +# +bif erlang:fun_info_mfa/1 +# # Obsolete # diff --git a/erts/emulator/beam/erl_bif_info.c b/erts/emulator/beam/erl_bif_info.c index 4d5e55aaf5..faa2655c11 100644 --- a/erts/emulator/beam/erl_bif_info.c +++ b/erts/emulator/beam/erl_bif_info.c @@ -3055,6 +3055,25 @@ fun_info_2(BIF_ALIST_2) return TUPLE2(hp, what, val); } +BIF_RETTYPE +fun_info_mfa_1(BIF_ALIST_1) +{ + Process* p = BIF_P; + Eterm fun = BIF_ARG_1; + Eterm* hp; + + if (is_fun(fun)) { + ErlFunThing* funp = (ErlFunThing *) fun_val(fun); + hp = HAlloc(p, 4); + BIF_RET(TUPLE3(hp,funp->fe->module,funp->fe->address[-2],make_small(funp->arity))); + } else if (is_export(fun)) { + Export* exp = (Export *) ((UWord) (export_val(fun))[1]); + hp = HAlloc(p, 4); + BIF_RET(TUPLE3(hp,exp->code[0],exp->code[1],make_small(exp->code[2]))); + } + BIF_ERROR(p, BADARG); +} + BIF_RETTYPE is_process_alive_1(BIF_ALIST_1) { if(is_internal_pid(BIF_ARG_1)) { diff --git a/erts/preloaded/src/erlang.erl b/erts/preloaded/src/erlang.erl index 4ff0513321..98d7a942a6 100644 --- a/erts/preloaded/src/erlang.erl +++ b/erts/preloaded/src/erlang.erl @@ -91,7 +91,7 @@ -export([external_size/2, finish_after_on_load/2, finish_loading/1, float/1]). -export([float_to_binary/1, float_to_binary/2, float_to_list/1, float_to_list/2]). --export([fun_info/2, fun_to_list/1, function_exported/3]). +-export([fun_info/2, fun_info_mfa/1, fun_to_list/1, function_exported/3]). -export([garbage_collect/0, garbage_collect/1, garbage_collect/2]). -export([garbage_collect_message_area/0, get/0, get/1, get_keys/1]). -export([get_module_info/1, get_stacktrace/0, group_leader/0]). @@ -827,6 +827,15 @@ float_to_list(_Float, _Options) -> fun_info(_Fun, _Item) -> erlang:nif_error(undefined). +%% fun_info_mfa/1 +-spec erlang:fun_info_mfa(Fun) -> {Mod, Name, Arity} when + Fun :: function(), + Mod :: atom(), + Name :: atom(), + Arity :: non_neg_integer(). +fun_info_mfa(_Fun) -> + erlang:nif_error(undefined). + %% fun_to_list/1 -spec erlang:fun_to_list(Fun) -> string() when Fun :: function(). |