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| author | Xavier Noria <[email protected]> | 2018-04-05 01:40:20 +0200 |
|---|---|---|
| committer | Xavier Noria <[email protected]> | 2018-06-13 12:04:08 +0200 |
| commit | b0900fc2f7daab1c77dd8878c39ab24591bb076b (patch) | |
| tree | a7f75ae939076a1e54213b3db883fd3478097548 /lib/kernel/src/application_master.erl | |
| parent | e754f23ead59f8592f3a1cbb66e22cfdba73517d (diff) | |
| download | otp-b0900fc2f7daab1c77dd8878c39ab24591bb076b.tar.gz otp-b0900fc2f7daab1c77dd8878c39ab24591bb076b.tar.bz2 otp-b0900fc2f7daab1c77dd8878c39ab24591bb076b.zip | |
Explain why the AM becomes group leader
Diffstat (limited to 'lib/kernel/src/application_master.erl')
| -rw-r--r-- | lib/kernel/src/application_master.erl | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/lib/kernel/src/application_master.erl b/lib/kernel/src/application_master.erl index 5da2b0b06c..06991b45e1 100644 --- a/lib/kernel/src/application_master.erl +++ b/lib/kernel/src/application_master.erl @@ -118,6 +118,10 @@ init(Parent, Starter, ApplData, Type) -> link(Parent), process_flag(trap_exit, true), OldGleader = group_leader(), + %% We become the group leader, but forward all I/O to OldGleader. + %% This is just a way to identify processes that belong to the + %% application. Used for example to find ourselves from any + %% process, or, reciprocally, to kill them all when we terminate. group_leader(self(), self()), %% Insert ourselves as master for the process. This ensures that %% the processes in the application can use get_env/1 at startup. |