V5 Disk space monitoring

Monitor disk availability and take action when the free disk space or
amount of free inode is running low, it is enabled when BB_DISKMON_DIRS
is set.

* Variable meanings(from meta-yocto/conf/local.conf.sample):

  # Set the directories to monitor for disk usage, if more than one
  # directories are mounted in the same device, then only one directory
  # would be monitored since the monitor is based on the device.
  # The format is:
  # "action,directory,minimum_space,minimum_free_inode"
  #
  # The "action" must be set and should be one of:
  # ABORT: Immediately abort
  # STOPTASKS: The new tasks can't be executed any more, will stop the build
  #           when the running tasks have been done.
  # WARN: show warnings (see BB_DISKMON_WARNINTERVAL for more information)
  #
  # The "directory" must be set, any directory is OK.
  #
  # Either "minimum_space" or "minimum_free_inode" (or both of them)
  # should be set, otherwise the monitor would not be enabled,
  # the unit can be G, M, K or none, but do NOT use GB, MB or KB
  # (B is not needed).
  #BB_DISKMON_DIRS = "STOPTASKS,${TMPDIR},1G,100K WARN,${SSTATE_DIR},1G,100K"
  #
  # Set disk space and inode interval (only works when the action is "WARN",
  # the unit can be G, M, or K, but do NOT use the GB, MB or KB
  # (B is not needed), the format is:
  # "disk_space_interval, disk_inode_interval",  the default value is
  # "50M,5K" which means that it would warn when the free space is
  # lower than the minimum space(or inode), and would repeat the action
  # when the disk space reduces 50M (or the amount of inode reduces 5k)
  # again.
  #BB_DISKMON_WARNINTERVAL = "50M,5K"

[YOCTO #1589]
(Bitbake rev: 4d173d441d2beb8e6492b6b1842682f8cf32e6cc)

Signed-off-by: Robert Yang <liezhi.yang@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

bitbake/lib/bb/runqueue.py

@@ -31,6 +31,7 @@ import fcntl
 import logging
 import bb
 from bb import msg, data, event
+from bb import monitordisk
 
 bblogger = logging.getLogger("BitBake")
 logger = logging.getLogger("BitBake.RunQueue")
@@ -775,6 +776,9 @@ class RunQueue:
 
         self.state = runQueuePrepare
 
+        # For disk space monitor
+        self.dm = monitordisk.diskMonitor(cfgData)
+
     def check_stamps(self):
         unchecked = {}
         current = []
@@ -949,6 +953,9 @@ class RunQueue:
             else:
                 self.rqexe = RunQueueExecuteScenequeue(self)
 
+        if self.state in [runQueueSceneRun, runQueueRunning, runQueueCleanUp]:
+            self.dm.check(self)
+
         if self.state is runQueueSceneRun:
             retval = self.rqexe.execute()