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File 2238-erts-Implement-halt-0-and-halt-1-in-Erlang.patch of Package erlang
From f9cb80861f169743a96099a06d68149a91f18dfa Mon Sep 17 00:00:00 2001 From: Sverker Eriksson <sverker@erlang.org> Date: Fri, 20 May 2016 15:58:04 +0200 Subject: [PATCH 4/7] erts: Implement halt/0 and halt/1 in Erlang just to make things simpler. --- erts/emulator/beam/bif.c | 50 +---------------------------------------- erts/emulator/beam/bif.tab | 2 -- erts/preloaded/src/erlang.erl | 8 +++---- erts/preloaded/src/init.erl | 1 + lib/hipe/cerl/erl_bif_types.erl | 6 ----- lib/stdlib/src/erl_compile.erl | 1 + lib/stdlib/src/escript.erl | 1 + 7 files changed, 7 insertions(+), 62 deletions(-) diff --git a/erts/emulator/beam/bif.c b/erts/emulator/beam/bif.c index 2a3bd4a..8147742 100644 --- a/erts/emulator/beam/bif.c +++ b/erts/emulator/beam/bif.c @@ -3836,59 +3836,11 @@ BIF_RETTYPE display_nl_0(BIF_ALIST_0) /**********************************************************************/ -/* stop the system */ -/* ARGSUSED */ -BIF_RETTYPE halt_0(BIF_ALIST_0) -{ - VERBOSE(DEBUG_SYSTEM,("System halted by BIF halt()\n")); - erts_halt(0); - ERTS_BIF_YIELD1(bif_export[BIF_halt_1], BIF_P, am_undefined); -} - -/**********************************************************************/ #define HALT_MSG_SIZE 200 static char halt_msg[HALT_MSG_SIZE]; -/* stop the system with exit code */ -/* ARGSUSED */ -BIF_RETTYPE halt_1(BIF_ALIST_1) -{ - Uint code; - - if (term_to_Uint_mask(BIF_ARG_1, &code)) { - int pos_int_code = (int) (code & INT_MAX); - VERBOSE(DEBUG_SYSTEM,("System halted by BIF halt(%T)\n", BIF_ARG_1)); - erts_halt(pos_int_code); - ERTS_BIF_YIELD1(bif_export[BIF_halt_1], BIF_P, am_undefined); - } - else if (ERTS_IS_ATOM_STR("abort", BIF_ARG_1)) { - VERBOSE(DEBUG_SYSTEM,("System halted by BIF halt(%T)\n", BIF_ARG_1)); - erts_smp_proc_unlock(BIF_P, ERTS_PROC_LOCK_MAIN); - erts_exit(ERTS_ABORT_EXIT, ""); - } - else if (is_string(BIF_ARG_1) || BIF_ARG_1 == NIL) { - Sint i; - - if ((i = intlist_to_buf(BIF_ARG_1, halt_msg, HALT_MSG_SIZE-1)) < 0) { - goto error; - } - halt_msg[i] = '\0'; - VERBOSE(DEBUG_SYSTEM,("System halted by BIF halt(%T)\n", BIF_ARG_1)); - erts_smp_proc_unlock(BIF_P, ERTS_PROC_LOCK_MAIN); - erts_exit(ERTS_DUMP_EXIT, "%s\n", halt_msg); - } - else - goto error; - return NIL; /* Pedantic (lint does not know about erts_exit) */ - error: - BIF_ERROR(BIF_P, BADARG); -} - -/**********************************************************************/ - /* stop the system with exit code and flags */ -/* ARGSUSED */ BIF_RETTYPE halt_2(BIF_ALIST_2) { Uint code; @@ -3924,7 +3876,7 @@ BIF_RETTYPE halt_2(BIF_ALIST_2) ("System halted by BIF halt(%T, %T)\n", BIF_ARG_1, BIF_ARG_2)); if (flush) { erts_halt(pos_int_code); - ERTS_BIF_YIELD1(bif_export[BIF_halt_1], BIF_P, am_undefined); + ERTS_BIF_YIELD2(bif_export[BIF_halt_2], BIF_P, am_undefined, am_undefined); } else { erts_smp_proc_unlock(BIF_P, ERTS_PROC_LOCK_MAIN); diff --git a/erts/emulator/beam/bif.tab b/erts/emulator/beam/bif.tab index 872f0f9..0650185 100644 --- a/erts/emulator/beam/bif.tab +++ b/erts/emulator/beam/bif.tab @@ -72,8 +72,6 @@ bif erlang:get/1 bif erlang:get_keys/1 bif erlang:group_leader/0 bif erlang:group_leader/2 -bif erlang:halt/0 -bif erlang:halt/1 bif erlang:halt/2 bif erlang:phash/2 bif erlang:phash2/1 diff --git a/erts/preloaded/src/erlang.erl b/erts/preloaded/src/erlang.erl index 3d152c4..4c456bb 100644 --- a/erts/preloaded/src/erlang.erl +++ b/erts/preloaded/src/erlang.erl @@ -977,17 +977,15 @@ group_leader(_GroupLeader, _Pid) -> erlang:nif_error(undefined). %% halt/0 -%% Shadowed by erl_bif_types: erlang:halt/0 -spec halt() -> no_return(). halt() -> - erlang:nif_error(undefined). + erlang:halt(0, []). %% halt/1 -%% Shadowed by erl_bif_types: erlang:halt/1 -spec halt(Status) -> no_return() when Status :: non_neg_integer() | 'abort' | string(). -halt(_Status) -> - erlang:nif_error(undefined). +halt(Status) -> + erlang:halt(Status, []). %% halt/2 %% Shadowed by erl_bif_types: erlang:halt/2 diff --git a/erts/preloaded/src/init.erl b/erts/preloaded/src/init.erl index 04c5210..e8f02f5 100644 --- a/erts/preloaded/src/init.erl +++ b/erts/preloaded/src/init.erl @@ -316,6 +316,7 @@ limit_halt_string(String) -> %% List = [string() | atom() | pid() | number()] %% Any other items in List, such as tuples, are ignored when creating %% the string used as argument to erlang:halt/1. +-spec crash(_, _) -> no_return(). crash(String, List) -> halt(halt_string(String, List)). diff --git a/lib/hipe/cerl/erl_bif_types.erl b/lib/hipe/cerl/erl_bif_types.erl index 9453ca6..f649c6e 100644 --- a/lib/hipe/cerl/erl_bif_types.erl +++ b/lib/hipe/cerl/erl_bif_types.erl @@ -154,8 +154,6 @@ type(M, F, A, Xs) -> erl_types:erl_type(). %%-- erlang ------------------------------------------------------------------- -type(erlang, halt, 0, _, _) -> t_none(); -type(erlang, halt, 1, _, _) -> t_none(); type(erlang, halt, 2, _, _) -> t_none(); type(erlang, exit, 1, _, _) -> t_none(); type(erlang, error, 1, _, _) -> t_none(); @@ -2341,10 +2339,6 @@ arg_types(erlang, bit_size, 1) -> %% Guard bif, needs to be here. arg_types(erlang, byte_size, 1) -> [t_bitstr()]; -arg_types(erlang, halt, 0) -> - []; -arg_types(erlang, halt, 1) -> - [t_sup([t_non_neg_fixnum(), t_atom('abort'), t_string()])]; arg_types(erlang, halt, 2) -> [t_sup([t_non_neg_fixnum(), t_atom('abort'), t_string()]), t_list(t_tuple([t_atom('flush'), t_boolean()]))]; diff --git a/lib/stdlib/src/erl_compile.erl b/lib/stdlib/src/erl_compile.erl index ef54076..a6ae398 100644 --- a/lib/stdlib/src/erl_compile.erl +++ b/lib/stdlib/src/erl_compile.erl @@ -60,6 +60,7 @@ compile_cmdline() -> _ -> my_halt(2) end. +-spec my_halt(_) -> no_return(). my_halt(Reason) -> erlang:halt(Reason). diff --git a/lib/stdlib/src/escript.erl b/lib/stdlib/src/escript.erl index b8ce311..f53b0e2 100644 --- a/lib/stdlib/src/escript.erl +++ b/lib/stdlib/src/escript.erl @@ -906,6 +906,7 @@ anno(L) -> fatal(Str) -> throw(Str). +-spec my_halt(_) -> no_return(). my_halt(Reason) -> erlang:halt(Reason). -- 2.1.4
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