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authorJohn Högberg <[email protected]>2017-07-06 12:30:45 +0200
committerJohn Högberg <[email protected]>2017-07-06 12:30:45 +0200
commit5a537ae41c2295f7f19e4e01fe90acc7585f5b30 (patch)
tree7a27a822fa0e7a09e2259a77683ca4f2632df0b3 /lib/tools/src
parent5e0019ebb29a9fd88e0b04f0bd0b0d722e3f189e (diff)
parent876ecc058d0d7dd48f8c5f7ddaf189d278e69925 (diff)
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Merge branch 'john/erts/runtime-lcnt' into maint
* john/erts/runtime-lcnt: Document rt_mask and add warnings about copy_save Add an emulator test suite for lock counting Break erts_debug:lock_counters/1 into separate BIFs Allow toggling lock counting at runtime Move lock flags to a common header Enable register_SUITE for lcnt builds Enable lcnt smoke test on all builds that have lcnt enabled Make lock counter info independent of the locks being counted OTP-14412 OTP-13170 OTP-14413
Diffstat (limited to 'lib/tools/src')
-rw-r--r--lib/tools/src/lcnt.erl77
-rw-r--r--lib/tools/src/tools.app.src2
2 files changed, 57 insertions, 22 deletions
diff --git a/lib/tools/src/lcnt.erl b/lib/tools/src/lcnt.erl
index d881fedbd5..139b3d8a4a 100644
--- a/lib/tools/src/lcnt.erl
+++ b/lib/tools/src/lcnt.erl
@@ -34,8 +34,11 @@
-export([start/0,
stop/0]).
-%% erts_debug:lock_counters api
--export([rt_collect/0,
+%% erts_debug:lcnt_xxx api
+-export([rt_mask/0,
+ rt_mask/1,
+ rt_mask/2,
+ rt_collect/0,
rt_collect/1,
rt_clear/0,
rt_clear/1,
@@ -134,27 +137,61 @@ start_internal() ->
%% -------------------------------------------------------------------- %%
%%
-%% API erts_debug:lock_counters
+%% API erts_debug:lcnt_xxx
%%
%% -------------------------------------------------------------------- %%
-rt_collect() ->
- erts_debug:lock_counters(info).
+rt_mask(Node, Categories) when is_atom(Node), is_list(Categories) ->
+ rpc:call(Node, lcnt, rt_mask, [Categories]).
+
+rt_mask(Node) when is_atom(Node) ->
+ rpc:call(Node, lcnt, rt_mask, []);
+
+rt_mask(Categories) when is_list(Categories) ->
+ case erts_debug:lcnt_control(copy_save) of
+ false ->
+ erts_debug:lcnt_control(mask, Categories);
+ true ->
+ {error, copy_save_enabled}
+ end.
+
+rt_mask() ->
+ erts_debug:lcnt_control(mask).
rt_collect(Node) ->
- rpc:call(Node, erts_debug, lock_counters, [info]).
+ rpc:call(Node, lcnt, rt_collect, []).
+rt_collect() ->
+ erts_debug:lcnt_collect().
+rt_clear(Node) ->
+ rpc:call(Node, lcnt, rt_clear, []).
rt_clear() ->
- erts_debug:lock_counters(clear).
+ erts_debug:lcnt_clear().
-rt_clear(Node) ->
- rpc:call(Node, erts_debug, lock_counters, [clear]).
+rt_opt(Node, Arg) ->
+ rpc:call(Node, lcnt, rt_opt, [Arg]).
-rt_opt({Type, Opt}) ->
- erts_debug:lock_counters({Type, Opt}).
+%% Compatibility shims for the "process/port_locks" options mentioned in the
+%% manual.
+rt_opt({process_locks, Enable}) ->
+ toggle_category(process, Enable);
+rt_opt({port_locks, Enable}) ->
+ toggle_category(io, Enable);
-rt_opt(Node, {Type, Opt}) ->
- rpc:call(Node, erts_debug, lock_counters, [{Type, Opt}]).
+rt_opt({Type, NewVal}) ->
+ PreviousVal = erts_debug:lcnt_control(Type),
+ erts_debug:lcnt_control(Type, NewVal),
+ PreviousVal.
+
+toggle_category(Category, true) ->
+ PreviousMask = erts_debug:lcnt_control(mask),
+ erts_debug:lcnt_control(mask, [Category | PreviousMask]),
+ lists:member(Category, PreviousMask);
+
+toggle_category(Category, false) ->
+ PreviousMask = erts_debug:lcnt_control(mask),
+ erts_debug:lcnt_control(mask, lists:delete(Category, PreviousMask)),
+ lists:member(Category, PreviousMask).
%% -------------------------------------------------------------------- %%
%%
@@ -192,13 +229,9 @@ call(Msg) -> gen_server:call(?MODULE, Msg, infinity).
%% -------------------------------------------------------------------- %%
apply(M,F,As) when is_atom(M), is_atom(F), is_list(As) ->
- ok = start_internal(),
- Opt = lcnt:rt_opt({copy_save, true}),
- lcnt:clear(),
- Res = erlang:apply(M,F,As),
- lcnt:collect(),
- lcnt:rt_opt({copy_save, Opt}),
- Res.
+ apply(fun() ->
+ erlang:apply(M,F,As)
+ end).
apply(Fun) when is_function(Fun) ->
lcnt:apply(Fun, []).
@@ -209,7 +242,9 @@ apply(Fun, As) when is_function(Fun) ->
lcnt:clear(),
Res = erlang:apply(Fun, As),
lcnt:collect(),
- lcnt:rt_opt({copy_save, Opt}),
+ %% _ is bound to silence a dialyzer warning; it used to fail silently and
+ %% we don't want to change the error semantics.
+ _ = lcnt:rt_opt({copy_save, Opt}),
Res.
all_conflicts() -> all_conflicts(time).
diff --git a/lib/tools/src/tools.app.src b/lib/tools/src/tools.app.src
index 12f0cfd2df..8beef49bf9 100644
--- a/lib/tools/src/tools.app.src
+++ b/lib/tools/src/tools.app.src
@@ -41,6 +41,6 @@
]
},
{runtime_dependencies, ["stdlib-3.1","runtime_tools-1.8.14",
- "kernel-3.0","erts-7.0","compiler-5.0"]}
+ "kernel-5.4","erts-9.1","compiler-5.0"]}
]
}.