[libvirt] [PATCH v2 6/9] daemon: Add quit_timeout period

[John Ferlan]

In order to prepare for the possibility to allow long running
thread(s) to complete their task(s) when a quit signal is received
by the daemon, create a configurable quit_timeout period in seconds.

Signed-off-by: John Ferlan <jferlan at redhat.com>
---
 src/remote/libvirtd.aug           | 1 +
 src/remote/libvirtd.conf          | 8 ++++++++
 src/remote/remote_daemon_config.c | 5 +++++
 src/remote/remote_daemon_config.h | 2 ++
 src/remote/test_libvirtd.aug.in   | 1 +
 5 files changed, 17 insertions(+)

diff --git a/src/remote/libvirtd.aug b/src/remote/libvirtd.aug
index 13333448a4..2c282e53e5 100644
--- a/src/remote/libvirtd.aug
+++ b/src/remote/libvirtd.aug
@@ -62,6 +62,7 @@ module Libvirtd =
                         | int_entry "max_anonymous_clients"
                         | int_entry "max_client_requests"
                         | int_entry "prio_workers"
+                        | int_entry "quit_timeout"
 
    let admin_processing_entry = int_entry "admin_min_workers"
                               | int_entry "admin_max_workers"
diff --git a/src/remote/libvirtd.conf b/src/remote/libvirtd.conf
index 92562ab7ae..cc9647391d 100644
--- a/src/remote/libvirtd.conf
+++ b/src/remote/libvirtd.conf
@@ -321,6 +321,14 @@
 # parameter.
 #max_client_requests = 5
 
+# Approximate number of seconds to wait to allow worker threads to
+# complete when a signal to quit (e.g. SIGINT, SIGQUIT, SIGTERM) is
+# received by libvirtd. This is only for currently processing workers
+# in order to allow them to potentially complete their long running
+# task such as stats collection or migrations. The default is to
+# not wait.
+#quit_timeout = 0
+
 # Same processing controls, but this time for the admin interface.
 # For description of each option, be so kind to scroll few lines
 # upwards.
diff --git a/src/remote/remote_daemon_config.c b/src/remote/remote_daemon_config.c
index b1516befb4..d6b3575a9a 100644
--- a/src/remote/remote_daemon_config.c
+++ b/src/remote/remote_daemon_config.c
@@ -155,6 +155,8 @@ daemonConfigNew(bool privileged ATTRIBUTE_UNUSED)
 
     data->max_client_requests = 5;
 
+    data->quit_timeout = 0;
+
     data->audit_level = 1;
     data->audit_logging = 0;
 
@@ -350,6 +352,9 @@ daemonConfigLoadOptions(struct daemonConfig *data,
     if (virConfGetValueUInt(conf, "max_client_requests", &data->max_client_requests) < 0)
         goto error;
 
+    if (virConfGetValueUInt(conf, "quit_timeout", &data->quit_timeout) < 0)
+        goto error;
+
     if (virConfGetValueUInt(conf, "admin_min_workers", &data->admin_min_workers) < 0)
         goto error;
     if (virConfGetValueUInt(conf, "admin_max_workers", &data->admin_max_workers) < 0)
diff --git a/src/remote/remote_daemon_config.h b/src/remote/remote_daemon_config.h
index 49ea80104b..0f27bf44c8 100644
--- a/src/remote/remote_daemon_config.h
+++ b/src/remote/remote_daemon_config.h
@@ -73,6 +73,8 @@ struct daemonConfig {
 
     unsigned int max_client_requests;
 
+    unsigned int quit_timeout;
+
     unsigned int log_level;
     char *log_filters;
     char *log_outputs;
diff --git a/src/remote/test_libvirtd.aug.in b/src/remote/test_libvirtd.aug.in
index 527e3d7d0d..c559696f58 100644
--- a/src/remote/test_libvirtd.aug.in
+++ b/src/remote/test_libvirtd.aug.in
@@ -43,6 +43,7 @@ module Test_libvirtd =
         { "max_workers" = "20" }
         { "prio_workers" = "5" }
         { "max_client_requests" = "5" }
+        { "quit_timeout" = "0" }
         { "admin_min_workers" = "1" }
         { "admin_max_workers" = "5" }
         { "admin_max_clients" = "5" }
-- 
2.17.1