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-rw-r--r--lib/kernel/doc/src/code.xml10
-rw-r--r--lib/kernel/test/init_SUITE.erl61
-rw-r--r--lib/sasl/src/sasl.app.src2
-rw-r--r--lib/sasl/src/systools_make.erl5
-rw-r--r--lib/tools/test/cover_SUITE.erl33
-rw-r--r--lib/tools/test/cover_SUITE_data/otp_6115/f1.erl15
-rw-r--r--lib/tools/test/cover_SUITE_data/otp_6115/f2.erl14
7 files changed, 95 insertions, 45 deletions
diff --git a/lib/kernel/doc/src/code.xml b/lib/kernel/doc/src/code.xml
index d3611d6a03..21f8a2d54a 100644
--- a/lib/kernel/doc/src/code.xml
+++ b/lib/kernel/doc/src/code.xml
@@ -651,6 +651,11 @@ ok = code:finish_loading(Prepared),
<p>Purges the code for <c><anno>Module</anno></c>, that is, removes code
marked as old. If some processes still linger in the old code,
these processes are killed before the code is removed.</p>
+ <note><p>As of ERTS version 9.0, a process is only considered
+ to be lingering in the code if it has direct references to the code.
+ For more information see documentation of
+ <seealso marker="erts:erlang#check_process_code/3"><c>erlang:check_process_code/3</c></seealso>,
+ which is used in order to determine this.</p></note>
<p>Returns <c>true</c> if successful and any process is needed to
be killed, otherwise <c>false</c>.</p>
</desc>
@@ -661,6 +666,11 @@ ok = code:finish_loading(Prepared),
<desc>
<p>Purges the code for <c><anno>Module</anno></c>, that is, removes code
marked as old, but only if no processes linger in it.</p>
+ <note><p>As of ERTS version 9.0, a process is only considered
+ to be lingering in the code if it has direct references to the code.
+ For more information see documentation of
+ <seealso marker="erts:erlang#check_process_code/3"><c>erlang:check_process_code/3</c></seealso>,
+ which is used in order to determine this.</p></note>
<p>Returns <c>false</c> if the module cannot be purged because
of processes lingering in old code, otherwise <c>true</c>.</p>
</desc>
diff --git a/lib/kernel/test/init_SUITE.erl b/lib/kernel/test/init_SUITE.erl
index 1370e23195..2b59eb2bfe 100644
--- a/lib/kernel/test/init_SUITE.erl
+++ b/lib/kernel/test/init_SUITE.erl
@@ -27,7 +27,8 @@
-export([get_arguments/1, get_argument/1, boot_var/1, restart/1,
many_restarts/0, many_restarts/1,
get_plain_arguments/1,
- reboot/1, stop_status/1, stop/1, get_status/1, script_id/1]).
+ reboot/1, stop_status/1, stop/1, get_status/1, script_id/1,
+ find_system_processes/0]).
-export([boot1/1, boot2/1]).
-export([init_per_testcase/2, end_per_testcase/2]).
@@ -355,12 +356,16 @@ wait_for(N,Node,EHPid) ->
restart(Config) when is_list(Config) ->
Args = args(),
+ Pa = " -pa " ++ filename:dirname(code:which(?MODULE)),
+
%% Currently test_server:start_node cannot be used. The restarted
%% node immediately halts due to the implementation of
%% test_server:start_node.
- {ok, Node} = loose_node:start(init_test, Args, ?DEFAULT_TIMEOUT_SEC),
+ {ok, Node} = loose_node:start(init_test, Args ++ Pa, ?DEFAULT_TIMEOUT_SEC),
%% Ok, the node is up, now the real test test begins.
erlang:monitor_node(Node, true),
+ SysProcs0 = rpc:call(Node, ?MODULE, find_system_processes, []),
+ [InitPid, PurgerPid, LitCollectorPid, DirtyCodePid] = SysProcs0,
InitPid = rpc:call(Node, erlang, whereis, [init]),
PurgerPid = rpc:call(Node, erlang, whereis, [erts_code_purger]),
Procs = rpc:call(Node, erlang, processes, []),
@@ -375,6 +380,9 @@ restart(Config) when is_list(Config) ->
end,
ok = wait_restart(30, Node),
+ SysProcs1 = rpc:call(Node, ?MODULE, find_system_processes, []),
+ [InitPid1, PurgerPid1, LitCollectorPid1, DirtyCodePid1] = SysProcs1,
+
%% Still the same init process!
InitPid1 = rpc:call(Node, erlang, whereis, [init]),
InitP = pid_to_list(InitPid),
@@ -385,8 +393,24 @@ restart(Config) when is_list(Config) ->
PurgerP = pid_to_list(PurgerPid),
PurgerP = pid_to_list(PurgerPid1),
+ %% and same literal area collector process!
+ case LitCollectorPid of
+ undefined -> undefined = LitCollectorPid1;
+ _ ->
+ LitCollectorP = pid_to_list(LitCollectorPid),
+ LitCollectorP = pid_to_list(LitCollectorPid1)
+ end,
+
+ %% and same dirty process code checker process!
+ case DirtyCodePid of
+ undefined -> undefined = DirtyCodePid1;
+ _ ->
+ DirtyCodeP = pid_to_list(DirtyCodePid),
+ DirtyCodeP = pid_to_list(DirtyCodePid1)
+ end,
+
NewProcs0 = rpc:call(Node, erlang, processes, []),
- NewProcs = NewProcs0 -- [InitPid1, PurgerPid1],
+ NewProcs = NewProcs0 -- SysProcs1,
case check_processes(NewProcs, MaxPid) of
true ->
ok;
@@ -406,6 +430,37 @@ restart(Config) when is_list(Config) ->
loose_node:stop(Node),
ok.
+-record(sys_procs, {init,
+ code_purger,
+ literal_collector,
+ dirty_proc_checker}).
+
+find_system_processes() ->
+ find_system_procs(processes(), #sys_procs{}).
+
+find_system_procs([], SysProcs) ->
+ [SysProcs#sys_procs.init,
+ SysProcs#sys_procs.code_purger,
+ SysProcs#sys_procs.literal_collector,
+ SysProcs#sys_procs.dirty_proc_checker];
+find_system_procs([P|Ps], SysProcs) ->
+ case process_info(P, initial_call) of
+ {initial_call,{otp_ring0,start,2}} ->
+ undefined = SysProcs#sys_procs.init,
+ find_system_procs(Ps, SysProcs#sys_procs{init = P});
+ {initial_call,{erts_code_purger,start,0}} ->
+ undefined = SysProcs#sys_procs.code_purger,
+ find_system_procs(Ps, SysProcs#sys_procs{code_purger = P});
+ {initial_call,{erts_literal_area_collector,start,0}} ->
+ undefined = SysProcs#sys_procs.literal_collector,
+ find_system_procs(Ps, SysProcs#sys_procs{literal_collector = P});
+ {initial_call,{erts_dirty_process_code_checker,start,0}} ->
+ undefined = SysProcs#sys_procs.dirty_proc_checker,
+ find_system_procs(Ps, SysProcs#sys_procs{dirty_proc_checker = P});
+ _ ->
+ find_system_procs(Ps, SysProcs)
+ end.
+
wait_restart(0, _Node) ->
ct:fail(not_restarted);
wait_restart(N, Node) ->
diff --git a/lib/sasl/src/sasl.app.src b/lib/sasl/src/sasl.app.src
index 4ee8a7d6c8..633cdfa070 100644
--- a/lib/sasl/src/sasl.app.src
+++ b/lib/sasl/src/sasl.app.src
@@ -46,5 +46,5 @@
{errlog_type, all}]},
{mod, {sasl, []}},
{runtime_dependencies, ["tools-2.6.14","stdlib-3.0","kernel-5.0",
- "erts-8.0"]}]}.
+ "erts-8.1"]}]}.
diff --git a/lib/sasl/src/systools_make.erl b/lib/sasl/src/systools_make.erl
index 352e4984df..efe6cc9eb4 100644
--- a/lib/sasl/src/systools_make.erl
+++ b/lib/sasl/src/systools_make.erl
@@ -1491,8 +1491,9 @@ mandatory_modules() ->
preloaded() ->
%% Sorted
[erl_prim_loader,erl_tracer,erlang,
- erts_code_purger,
- erts_internal,init,otp_ring0,prim_eval,prim_file,
+ erts_code_purger,erts_dirty_process_code_checker,
+ erts_internal,erts_literal_area_collector,
+ init,otp_ring0,prim_eval,prim_file,
prim_inet,prim_zip,zlib].
%%______________________________________________________________________
diff --git a/lib/tools/test/cover_SUITE.erl b/lib/tools/test/cover_SUITE.erl
index b4c9264b30..90e113c178 100644
--- a/lib/tools/test/cover_SUITE.erl
+++ b/lib/tools/test/cover_SUITE.erl
@@ -1001,41 +1001,40 @@ otp_6115(Config) when is_list(Config) ->
%% Cover compile f1, but not f2
{ok, f1} = cover:compile(f1),
+ %% This test used to ensure that a process containing a
+ %% fun refering to cover compiled code was killed.
+ %% check_process_code may however ignore funs as of ERTS
+ %% version 8.1. The test has therefore been rewritten to
+ %% check that a process with a direct reference (in this
+ %% case a return address) to the code is killed.
+ %%
%% If f1 is cover compiled, a process P is started with a
- %% reference to the fun created in start_fail/0, and cover:stop() is
- %% called, then P should be killed.
- %% This is because (the fun held by P) references the cover
+ %% direct reference to the f1, and cover:stop() is called,
+ %% then P should be killed.
+ %% This is because of the return address to the cover
%% compiled code which should be *unloaded* when cover:stop() is
%% called -- running cover compiled code when there is no cover
%% server and thus no ets tables to bump counters in, makes no
%% sense.
- Pid1 = f1:start_a(),
- Pid2 = f1:start_b(),
+ Pid = spawn(fun () -> f1:non_tail_call_f2_wait() end),
%% Now stop cover
cover:stop(),
%% Ensure that f1 is loaded (and not cover compiled), and that
- %% both Pid1 and Pid2 are dead.
+ %% both Pid is dead.
case code:which(f1) of
Beam when is_list(Beam) ->
ok;
Other ->
ct:fail({"f1 is not reloaded", Other})
end,
- case process_info(Pid1) of
+ case process_info(Pid) of
undefined ->
ok;
- _PI1 ->
- RefToOldP1 = erlang:check_process_code(Pid1, f1),
- ct:fail({"Pid1 still alive", RefToOldP1})
- end,
- case process_info(Pid2) of
- undefined ->
- ok;
- _PI2 ->
- RefToOldP2 = erlang:check_process_code(Pid1, f2),
- ct:fail({"Pid2 still alive", RefToOldP2})
+ _PI ->
+ RefToOldP = erlang:check_process_code(Pid, f1),
+ ct:fail({"Pid still alive", RefToOldP})
end,
file:set_cwd(CWD),
diff --git a/lib/tools/test/cover_SUITE_data/otp_6115/f1.erl b/lib/tools/test/cover_SUITE_data/otp_6115/f1.erl
index 5399b33f19..fc4a62e70e 100644
--- a/lib/tools/test/cover_SUITE_data/otp_6115/f1.erl
+++ b/lib/tools/test/cover_SUITE_data/otp_6115/f1.erl
@@ -1,13 +1,6 @@
-module(f1).
--export([start_a/0, start_b/0]).
+-export([non_tail_call_f2_wait/0]).
-start_a() ->
- f2:start(fun() ->
- ok
- end).
-
-start_b() ->
- f2:start(fun fun1/0).
-
-fun1() ->
- ok.
+non_tail_call_f2_wait() ->
+ f2:wait(),
+ im_back.
diff --git a/lib/tools/test/cover_SUITE_data/otp_6115/f2.erl b/lib/tools/test/cover_SUITE_data/otp_6115/f2.erl
index 72a6a64c4d..4bc88035c7 100644
--- a/lib/tools/test/cover_SUITE_data/otp_6115/f2.erl
+++ b/lib/tools/test/cover_SUITE_data/otp_6115/f2.erl
@@ -1,13 +1,5 @@
-module(f2).
--export([start/1]).
+-export([wait/0]).
-start(Fun) ->
- spawn(fun() ->
- wait(Fun)
- end).
-
-wait(Fun) ->
- receive
- go ->
- Fun()
- end.
+wait() ->
+ receive after infinity -> ok end.
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-22 00:38:35 +0000