Schedule _record_binpkg_info as a member of a TaskSequence, in
order to guarantee that it executes immediately after
EbuildBinpkg (and before the tasks that follow). This approach
is similar to that used to fix bug 562264.

X-Gentoo-bug: 578204
X-Gentoo-bug-url: https://bugs.gentoo.org/show_bug.cgi?id=578204
---
[PATCH v3] Added docstring to _RecordBinpkgInfo as suggested by Alexander 
Berntsen.

 pym/_emerge/EbuildBuild.py | 22 ++++++++++++++++++++--
 1 file changed, 20 insertions(+), 2 deletions(-)

diff --git a/pym/_emerge/EbuildBuild.py b/pym/_emerge/EbuildBuild.py
index 95c14e4..001f55f 100644
--- a/pym/_emerge/EbuildBuild.py
+++ b/pym/_emerge/EbuildBuild.py
@@ -6,6 +6,7 @@ from __future__ import unicode_literals
 import io
 
 import _emerge.emergelog
+from _emerge.AsynchronousTask import AsynchronousTask
 from _emerge.EbuildExecuter import EbuildExecuter
 from _emerge.EbuildPhase import EbuildPhase
 from _emerge.EbuildBinpkg import EbuildBinpkg
@@ -325,8 +326,12 @@ class EbuildBuild(CompositeTask):
                                                pkg=self.pkg, 
scheduler=self.scheduler,
                                                settings=self.settings)
                                        binpkg_tasks.add(task)
-                                       task.addExitListener(
-                                               self._record_binpkg_info)
+                                       # Guarantee that _record_binpkg_info is 
called
+                                       # immediately after EbuildBinpkg. Note 
that
+                                       # task.addExitListener does not provide 
the
+                                       # necessary guarantee (see bug 578204).
+                                       binpkg_tasks.add(self._RecordBinpkgInfo(
+                                               ebuild_binpkg=task, 
ebuild_build=self))
 
                if binpkg_tasks:
                        self._start_task(binpkg_tasks, self._buildpkg_exit)
@@ -335,6 +340,19 @@ class EbuildBuild(CompositeTask):
                self._final_exit(build)
                self.wait()
 
+       class _RecordBinpkgInfo(AsynchronousTask):
+               """
+               This class wraps the EbuildBuild _record_binpkg_info method
+               with an AsynchronousTask interface, so that it can be
+               scheduled as a member of a TaskSequence.
+               """
+
+               __slots__ = ('ebuild_binpkg', 'ebuild_build',)
+
+               def _start(self):
+                       
self.ebuild_build._record_binpkg_info(self.ebuild_binpkg)
+                       AsynchronousTask._start(self)
+
        def _buildpkg_exit(self, packager):
                """
                Released build dir lock when there is a failure or
-- 
2.7.2


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