From a7f51f7f903525350f0eb33a8751626610369d7b Mon Sep 17 00:00:00 2001 From: Sverker Eriksson Date: Fri, 1 Feb 2019 19:10:24 +0100 Subject: erts: Add enif_make_monitor_term --- erts/doc/src/erl_nif.xml | 12 ++++++++++++ erts/emulator/beam/erl_nif.c | 6 ++++++ erts/emulator/beam/erl_nif_api_funcs.h | 2 ++ erts/emulator/test/nif_SUITE.erl | 8 ++++++++ erts/emulator/test/nif_SUITE_data/nif_SUITE.c | 11 +++++++++++ 5 files changed, 39 insertions(+) diff --git a/erts/doc/src/erl_nif.xml b/erts/doc/src/erl_nif.xml index 34042cb4de..95b7188882 100644 --- a/erts/doc/src/erl_nif.xml +++ b/erts/doc/src/erl_nif.xml @@ -2216,6 +2216,18 @@ enif_inspect_iovec(env, max_elements, term, &tail, &iovec); + + ERL_NIF_TERM + enif_make_monitor_term(ErlNifEnv* env, const ErlNifMonitor* mon) + Make monitor term from the given monitor identifier. + +

Creates a term identifying the given monitor received from + enif_monitor_process + .

+

This function is primarily intended for debugging purpose.

+ + + unsigned char *enif_make_new_binary(ErlNifEnv* env, size_t size, ERL_NIF_TERM* termp) diff --git a/erts/emulator/beam/erl_nif.c b/erts/emulator/beam/erl_nif.c index a48d0391f6..b762e0f6e7 100644 --- a/erts/emulator/beam/erl_nif.c +++ b/erts/emulator/beam/erl_nif.c @@ -3362,6 +3362,12 @@ int enif_monitor_process(ErlNifEnv* env, void* obj, const ErlNifPid* target_pid, return 0; } +ERL_NIF_TERM enif_make_monitor_term(ErlNifEnv* env, const ErlNifMonitor* monitor) +{ + Eterm* hp = alloc_heap(env, ERTS_REF_THING_SIZE); + return erts_driver_monitor_to_ref(hp, monitor); +} + int enif_demonitor_process(ErlNifEnv* env, void* obj, const ErlNifMonitor* monitor) { ErtsResource* rsrc = DATA_TO_RESOURCE(obj); diff --git a/erts/emulator/beam/erl_nif_api_funcs.h b/erts/emulator/beam/erl_nif_api_funcs.h index 129166562d..4ea6a2f7b0 100644 --- a/erts/emulator/beam/erl_nif_api_funcs.h +++ b/erts/emulator/beam/erl_nif_api_funcs.h @@ -211,6 +211,7 @@ ERL_NIF_API_FUNC_DECL(int,enif_vsnprintf,(char*, size_t, const char *fmt, va_lis ERL_NIF_API_FUNC_DECL(int,enif_make_map_from_arrays,(ErlNifEnv *env, ERL_NIF_TERM keys[], ERL_NIF_TERM values[], size_t cnt, ERL_NIF_TERM *map_out)); ERL_NIF_API_FUNC_DECL(int,enif_select_x,(ErlNifEnv* env, ErlNifEvent e, enum ErlNifSelectFlags flags, void* obj, const ErlNifPid* pid, ERL_NIF_TERM msg, ErlNifEnv* msg_env)); +ERL_NIF_API_FUNC_DECL(ERL_NIF_TERM,enif_make_monitor_term,(ErlNifEnv* env, const ErlNifMonitor*)); /* @@ -396,6 +397,7 @@ ERL_NIF_API_FUNC_DECL(int,enif_select_x,(ErlNifEnv* env, ErlNifEvent e, enum Erl # define enif_vsnprintf ERL_NIF_API_FUNC_MACRO(enif_vsnprintf) # define enif_make_map_from_arrays ERL_NIF_API_FUNC_MACRO(enif_make_map_from_arrays) # define enif_select_x ERL_NIF_API_FUNC_MACRO(enif_select_x) +# define enif_make_monitor_term ERL_NIF_API_FUNC_MACRO(enif_make_monitor_term) /* ** ADD NEW ENTRIES HERE (before this comment) diff --git a/erts/emulator/test/nif_SUITE.erl b/erts/emulator/test/nif_SUITE.erl index 0d0930e124..75b3cd2c14 100644 --- a/erts/emulator/test/nif_SUITE.erl +++ b/erts/emulator/test/nif_SUITE.erl @@ -822,8 +822,11 @@ demonitor_process(Config) -> end), R_ptr = alloc_monitor_resource_nif(), {0,MonBin1} = monitor_process_nif(R_ptr, Pid, true, self()), + MonTerm1 = make_monitor_term_nif(MonBin1), [R_ptr] = monitored_by(Pid), {0,MonBin2} = monitor_process_nif(R_ptr, Pid, true, self()), + MonTerm2 = make_monitor_term_nif(MonBin2), + true = (MonTerm1 =/= MonTerm2), [R_ptr, R_ptr] = monitored_by(Pid), 0 = demonitor_process_nif(R_ptr, MonBin1), [R_ptr] = monitored_by(Pid), @@ -837,6 +840,10 @@ demonitor_process(Config) -> {R_ptr, _, 1} = last_resource_dtor_call(), [] = monitored_by(Pid), Pid ! return, + + erlang:garbage_collect(), + true = (MonTerm1 =/= MonTerm2), + io:format("MonTerm1 = ~p\nMonTerm2 = ~p\n", [MonTerm1, MonTerm2]), ok. @@ -3421,6 +3428,7 @@ alloc_monitor_resource_nif() -> ?nif_stub. monitor_process_nif(_,_,_,_) -> ?nif_stub. demonitor_process_nif(_,_) -> ?nif_stub. compare_monitors_nif(_,_) -> ?nif_stub. +make_monitor_term_nif(_) -> ?nif_stub. monitor_frenzy_nif(_,_,_,_) -> ?nif_stub. ioq_nif(_) -> ?nif_stub. ioq_nif(_,_) -> ?nif_stub. diff --git a/erts/emulator/test/nif_SUITE_data/nif_SUITE.c b/erts/emulator/test/nif_SUITE_data/nif_SUITE.c index 21af4b05b3..af2d062857 100644 --- a/erts/emulator/test/nif_SUITE_data/nif_SUITE.c +++ b/erts/emulator/test/nif_SUITE_data/nif_SUITE.c @@ -2847,6 +2847,16 @@ static ERL_NIF_TERM compare_monitors_nif(ErlNifEnv* env, int argc, const ERL_NIF return enif_make_int(env, enif_compare_monitors(&m1, &m2)); } +static ERL_NIF_TERM make_monitor_term_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]) +{ + ErlNifMonitor m; + if (!get_monitor(env, argv[0], &m)) { + return enif_make_badarg(env); + } + + return enif_make_monitor_term(env, &m); +} + /*********** monitor_frenzy ************/ @@ -3596,6 +3606,7 @@ static ErlNifFunc nif_funcs[] = {"monitor_process_nif", 4, monitor_process_nif}, {"demonitor_process_nif", 2, demonitor_process_nif}, {"compare_monitors_nif", 2, compare_monitors_nif}, + {"make_monitor_term_nif", 1, make_monitor_term_nif}, {"monitor_frenzy_nif", 4, monitor_frenzy_nif}, {"whereis_send", 3, whereis_send}, {"whereis_term", 2, whereis_term}, -- cgit v1.2.3