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authorLukas Larsson <[email protected]>2011-01-25 13:24:55 +0100
committerLukas Larsson <[email protected]>2011-01-25 13:24:55 +0100
commit701918817ce0e9ea3d49b54d250066da76095010 (patch)
tree7f5b97e9e324c7ba30fae1d61a32eb38e2dafa8a /lib/tools
parentc9aae9e6874950c671c08940d4e72abc616c550e (diff)
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Update remote loading to only load a certain number of modules at a time to prevent memory usage explosion
Diffstat (limited to 'lib/tools')
-rw-r--r--lib/tools/src/cover.erl25
1 files changed, 18 insertions, 7 deletions
diff --git a/lib/tools/src/cover.erl b/lib/tools/src/cover.erl
index c4d1bd1d2f..4cc78403e1 100644
--- a/lib/tools/src/cover.erl
+++ b/lib/tools/src/cover.erl
@@ -972,14 +972,25 @@ remote_start(MainNode) ->
{error,{already_started,Pid}}
end.
-%% Load a set of cover compiled modules on remote nodes
-remote_load_compiled(Nodes,Compiled0) ->
- Compiled = lists:map(fun get_data_for_remote_loading/1,Compiled0),
+%% Load a set of cover compiled modules on remote nodes,
+%% We do it ?MAX_MODS modules at a time so that we don't
+%% run out of memory on the cover_server node.
+-define(MAX_MODS, 10).
+remote_load_compiled(Nodes,Compiled) ->
+ remote_load_compiled(Nodes, Compiled, [], 0).
+remote_load_compiled(_Nodes, [], [], _ModNum) ->
+ ok;
+remote_load_compiled(Nodes, Compiled, Acc, ModNum)
+ when Compiled == []; ModNum == ?MAX_MODS ->
lists:foreach(
fun(Node) ->
- remote_call(Node,{remote,load_compiled,Compiled})
+ remote_call(Node,{remote,load_compiled,Acc})
end,
- Nodes).
+ Nodes),
+ remote_load_compiled(Nodes, Compiled, [], 0);
+remote_load_compiled(Nodes, [MF | Rest], Acc, ModNum) ->
+ remote_load_compiled(
+ Nodes, Rest, [get_data_for_remote_loading(MF) | Acc], ModNum + 1).
%% Read all data needed for loading a cover compiled module on a remote node
%% Binary is the beam code for the module and InitialTable is the initial
@@ -993,8 +1004,8 @@ get_data_for_remote_loading({Module,File}) ->
%% Create a match spec which returns the clause info {Module,InitInfo} and
%% all #bump keys for the given module with 0 number of calls.
ms(Module) ->
- ets:fun2ms(fun({Module,InitInfo}) ->
- {Module,InitInfo};
+ ets:fun2ms(fun({Mod,InitInfo}) ->
+ {Mod,InitInfo};
({Key,_}) when is_record(Key,bump),Key#bump.module=:=Module ->
{Key,0}
end).