bitbake: server/process: Improve idle loop exit code

When idle handlers want to exit, returning "False" isn't very clear
and also causes challenges with the ordering of the removing the idle
handler and marking that no async command is running.

Use a specific class to signal the exit condition allowing clearer code
and allowing the async command to be cleared after the handler has been
removed, reducing any opportunity for races.

(Bitbake rev: 102e8d0d4c5c0dd8c7ba09ad26589deec77e4308)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 10 insertions, 1 deletions

diff --git a/bitbake/lib/bb/server/process.py b/bitbake/lib/bb/server/process.py
index eba28ad983..5acc105e08 100644
--- a/bitbake/lib/bb/server/process.py
+++ b/bitbake/lib/bb/server/process.py
@@ -71,6 +71,10 @@ def get_lockfile_process_msg(lockfile):
         return procs.decode("utf-8")
     return None
 
+class idleFinish():
+    def __init__(self, msg):
+         self.msg = msg
+
 class ProcessServer():
     profile_filename = "profile.log"
     profile_processed_filename = "profile.log.processed"
@@ -361,7 +365,12 @@ class ProcessServer():
         for function, data in list(self._idlefuns.items()):
             try:
                 retval = function(self, data, False)
-                if retval is False:
+                if isinstance(retval, idleFinish):
+                    serverlog("Removing idle function %s at idleFinish" % str(function))
+                    del self._idlefuns[function]
+                    self.cooker.command.finishAsyncCommand(retval.msg)
+                    nextsleep = None
+                elif retval is False:
                     serverlog("Removing idle function %s" % str(function))
                     del self._idlefuns[function]
                     nextsleep = None