From 631939c2452413014dfe3777997157ab541770ae Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Bj=C3=B6rn=20Gustavsson?= Date: Wed, 10 Aug 2011 14:39:34 +0200 Subject: Add erlang:check_old_code/1 Add erlang:check_old_code/1 to quickly check whether a module has old code. If there is no old code, there is no need to call erlang:check_process_code/2 for all processes, which will save some time if there are many processes. --- lib/hipe/cerl/erl_bif_types.erl | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'lib') diff --git a/lib/hipe/cerl/erl_bif_types.erl b/lib/hipe/cerl/erl_bif_types.erl index f1be658054..82e3675938 100644 --- a/lib/hipe/cerl/erl_bif_types.erl +++ b/lib/hipe/cerl/erl_bif_types.erl @@ -672,6 +672,9 @@ type(erlang, call_on_load_function, 1, Xs) -> type(erlang, cancel_timer, 1, Xs) -> strict(arg_types(erlang, cancel_timer, 1), Xs, fun (_) -> t_sup(t_integer(), t_atom('false')) end); +type(erlang, check_old_code, 1, Xs) -> + strict(arg_types(erlang, check_old_code, 1), Xs, + fun (_) -> t_boolean() end); type(erlang, check_process_code, 2, Xs) -> strict(arg_types(erlang, check_process_code, 2), Xs, fun (_) -> t_boolean() end); @@ -3395,6 +3398,8 @@ arg_types(erlang, call_on_load_function, 1) -> [t_atom()]; arg_types(erlang, cancel_timer, 1) -> [t_reference()]; +arg_types(erlang, check_old_code, 1) -> + [t_atom()]; arg_types(erlang, check_process_code, 2) -> [t_pid(), t_atom()]; arg_types(erlang, concat_binary, 1) -> -- cgit v1.2.3 From 4275ca6ecfa35554416bdb517999642b242e9776 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Bj=C3=B6rn=20Gustavsson?= Date: Thu, 25 Aug 2011 09:29:41 +0200 Subject: code: Optimize purge/1 and soft_purge/1 using check_old_code/1 While at it, eliminate an unnecessary use of throw/catch in the implementation of soft_purge/1. --- lib/kernel/src/code_server.erl | 17 ++++++++++++----- 1 file changed, 12 insertions(+), 5 deletions(-) (limited to 'lib') diff --git a/lib/kernel/src/code_server.erl b/lib/kernel/src/code_server.erl index 4a1fc7df34..85bbff9cc3 100644 --- a/lib/kernel/src/code_server.erl +++ b/lib/kernel/src/code_server.erl @@ -1379,8 +1379,12 @@ absname_vr([[X, $:]|Name], _, _AbsBase) -> %% Kill all processes running code from *old* Module, and then purge the %% module. Return true if any processes killed, else false. -do_purge(Mod) -> - do_purge(processes(), to_atom(Mod), false). +do_purge(Mod0) -> + Mod = to_atom(Mod0), + case erlang:check_old_code(Mod) of + false -> false; + true -> do_purge(processes(), Mod, false) + end. do_purge([P|Ps], Mod, Purged) -> case erlang:check_process_code(P, Mod) of @@ -1399,16 +1403,19 @@ do_purge([], Mod, Purged) -> Purged. %% do_soft_purge(Module) -%% Purge old code only if no procs remain that run old code +%% Purge old code only if no procs remain that run old code. %% Return true in that case, false if procs remain (in this %% case old code is not purged) do_soft_purge(Mod) -> - catch do_soft_purge(processes(), Mod). + case erlang:check_old_code(Mod) of + false -> true; + true -> do_soft_purge(processes(), Mod) + end. do_soft_purge([P|Ps], Mod) -> case erlang:check_process_code(P, Mod) of - true -> throw(false); + true -> false; false -> do_soft_purge(Ps, Mod) end; do_soft_purge([], Mod) -> -- cgit v1.2.3