Document startup and shutdown components

1 files changed, 14 insertions, 1 deletions

diff --git a/NEWS b/NEWS
index 6492aa5..0840055 100644
--- a/NEWS
+++ b/NEWS
@@ -1,4 +1,4 @@
-GNU Pies NEWS -- history of user-visible changes. 2019-05-23
+GNU Pies NEWS -- history of user-visible changes. 2019-05-28
 See the end of file for copying conditions.
 
 Please send Pies bug reports to <bug-pies@gnu.org> or
@@ -12,6 +12,19 @@ The --no-init option instructs pies not to switch to init mode if its
 PID is 1.  Use this option if you run pies as a process manager in a
 docker container.
 
+* New component modes: startup and shutdown
+
+Startup components are run right after pies startup. Any other
+components start running only after last startup component has terminated.
+
+Shutdown components are executed at program shutdown, after
+all other components have been terminated.
+
+Any number of startup or shutdwon components can be defined in the
+configuration file. Such multiple components are run simultaneously,
+unless required otherwise by their "prerequisites" and "dependents"
+statements. 
+
 * Improved cyclic dependency diagnostics