From a9cd657a01ad1158427f9539220694e77de896a2 Mon Sep 17 00:00:00 2001
From: Alexandru DAMIAN <alexandru.damian@intel.com>
Date: Mon, 23 Feb 2015 19:24:58 +0000
Subject: bitbake: cooker: read file watches on server idle

The inotify facility monitoring changes to the config files
could be overwhelmed by massive changes to the watched files
while server is running.

This patch adds verification the notification watches to the
server idle functions, in addition to the cooker updateCache
command which executes only infrequently, thus preventing
overflowing the notification buffer.

[YOCTO #7316]

(Bitbake rev: 996e663fd5c254292f44eca46f5fdc95af897f98)

Signed-off-by: Alexandru DAMIAN <alexandru.damian@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
---
 bitbake/lib/bb/cooker.py | 30 +++++++++++++++++++++++-------
 1 file changed, 23 insertions(+), 7 deletions(-)

(limited to 'bitbake/lib/bb/cooker.py')

diff --git a/bitbake/lib/bb/cooker.py b/bitbake/lib/bb/cooker.py
index 0bbbc09c33..5ebf6a1328 100644
--- a/bitbake/lib/bb/cooker.py
+++ b/bitbake/lib/bb/cooker.py
@@ -133,6 +133,19 @@ class BBCooker:
 
 
         self.initConfigurationData()
+
+        self.inotify_modified_files = []
+
+        def _process_inotify_updates(server, notifier_list, abort):
+            for n in notifier_list:
+                if n.check_events(timeout=0):
+                    # read notified events and enqeue them
+                    n.read_events()
+                    n.process_events()
+            return True
+
+        self.configuration.server_register_idlecallback(_process_inotify_updates, [self.confignotifier, self.notifier])
+
         self.baseconfig_valid = True
         self.parsecache_valid = False
 
@@ -171,11 +184,13 @@ class BBCooker:
         signal.signal(signal.SIGHUP, self.sigterm_exception)
 
     def config_notifications(self, event):
-        bb.parse.update_cache(event.path)
+        if not event.path in self.inotify_modified_files:
+            self.inotify_modified_files.append(event.path)
         self.baseconfig_valid = False
 
     def notifications(self, event):
-        bb.parse.update_cache(event.path)
+        if not event.path in self.inotify_modified_files:
+            self.inotify_modified_files.append(event.path)
         self.parsecache_valid = False
 
     def add_filewatch(self, deps, watcher=None):
@@ -1419,11 +1434,12 @@ class BBCooker:
             raise bb.BBHandledException()
 
         if self.state != state.parsing:
-            for n in [self.confignotifier, self.notifier]:
-                if n.check_events(timeout=0):
-                    # read notified events and enqeue them
-                    n.read_events()
-                n.process_events()
+
+            # reload files for which we got notifications
+            for p in self.inotify_modified_files:
+                bb.parse.update_cache(p)
+            self.inotify_modified_files = []
+
             if not self.baseconfig_valid:
                 logger.debug(1, "Reloading base configuration data")
                 self.initConfigurationData()
-- 
cgit v1.2.3-54-g00ecf