[shepherd] 05/05: Update 'NEWS'.

[Ludovic Courtès]

civodul pushed a commit to branch master
in repository shepherd.

commit 4c031cf4fdb6d2502cc65f0ea98aefc2069ab2ee
Author: Ludovic Courtès <ludo@gnu.org>
AuthorDate: Wed Nov 16 23:57:31 2022 +0100

    Update 'NEWS'.
---
 NEWS | 40 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 40 insertions(+)

diff --git a/NEWS b/NEWS
index 1a1aa67..59f4c38 100644
--- a/NEWS
+++ b/NEWS
@@ -11,6 +11,46 @@ Copyright © 2013-2014, 2016, 2018-2020, 2022 Ludovic Courtès 
<ludo@gnu.org>
 
 Please send Shepherd bug reports to bug-guix@gnu.org.
 
+* Changes in version 0.9.3
+
+** Service ‘stop’ is now synchronous
+   <https://issues.guix.gnu.org/58485>
+
+Previously, ‘herd stop SERVICE’ would send SIGTERM to the service’s process
+and immediately move on without waiting for the process to actually terminate.
+This could cause problems for example when running ‘herd restart SERVICE’:
+there was a possibility that a new instance of the service would be spawned
+before the previous one had terminated.
+
+This is now fixed: ‘stop’ only returns once the process has actually
+terminated.  Furthermore, the destructor returned by ‘make-kill-destructor’
+sends SIGKILL after some grace period has expired if the process is still
+around; this is configurable with #:grace-period and
+‘default-process-termination-grace-period’.
+
+** Non-blocking replacement for ‘system*’
+   <https://issues.guix.gnu.org/56674>.
+
+Service code can now call ‘system*’ lightheartedly: shepherd installs a
+cooperative, non-blocking replacement for Guile’s ‘system*’ procedure.
+Concretely, it means that it’s OK to use ‘system*’, say, in the ‘start’ method
+of a service: it won’t block shepherd, one can still interact with it with
+‘herd’.
+
+** Fewer continuation barriers
+
+The ‘stop’ method of services, and ‘eval’ and ‘load’ actions of the ‘root’
+service, and a few other points acted as “continuation barriers”, meaning that
+user code would not be allowed to suspend the current fiber for example by
+calling the ‘sleep’ procedure from (fiber).  These limitations have been
+lifted.
+
+** Reduced memory consumption while logging
+
+Service output logging allocates less memory than before.
+
+** Updated translations: ro, sr
+
 * Changes in version 0.9.2
 ** File descriptors used internally are now all marked as close-on-exec