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authorBjörn Gustavsson <[email protected]>2010-10-19 13:43:13 +0200
committerBjörn Gustavsson <[email protected]>2010-10-20 12:02:08 +0200
commit7f82eddfaa3b89f734b4d58f1de92db86e5880cf (patch)
treed006dcb6f6c022ee875b32e75415c3793eb9cb7a /lib/kernel/src/kernel.erl
parentc09fa792fad151f43cd3fa3d998b666a91badc5e (diff)
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Fix hang in on_load handlers in embedded mode
In embedded mode, all on_load handlers will be called after loading all modules but before starting any servers. Therefore, if an on_load handler calls any function in the code module that calls the code server (such as code:priv_dir/1), there will be a deadlock because the code server has not yet been started. Fix this problem by invoking the on_load handlers after having started most servers in the kernel application.
Diffstat (limited to 'lib/kernel/src/kernel.erl')
-rw-r--r--lib/kernel/src/kernel.erl7
1 files changed, 7 insertions, 0 deletions
diff --git a/lib/kernel/src/kernel.erl b/lib/kernel/src/kernel.erl
index 92ee7b441a..d3b0f6c712 100644
--- a/lib/kernel/src/kernel.erl
+++ b/lib/kernel/src/kernel.erl
@@ -143,6 +143,13 @@ init(safe) ->
Boot = start_boot_server(),
DiskLog = start_disk_log(),
Pg2 = start_pg2(),
+
+ %% Run the on_load handlers for all modules that have been
+ %% loaded so far. Running them at this point means that
+ %% on_load handlers can safely call kernel processes
+ %% (and in particular call code:priv_dir/1 or code:lib_dir/1).
+ init:run_on_load_handlers(),
+
{ok, {SupFlags, Boot ++ DiskLog ++ Pg2}}.
get_code_args() ->