9 files changed, 39 insertions, 29 deletions

diff --git a/bitbake/lib/bb/__init__.py b/bitbake/lib/bb/__init__.py
index bf4c54d829..3c98b835c6 100644
--- a/bitbake/lib/bb/__init__.py
+++ b/bitbake/lib/bb/__init__.py
@@ -37,6 +37,34 @@ class BBHandledException(Exception):
 import os
 import logging
 from collections import namedtuple
+import multiprocessing as mp
+
+# Python 3.14 changes the default multiprocessing context from "fork" to
+# "forkserver". However, bitbake heavily relies on "fork" behavior to
+# efficiently pass data to the child processes. Places that need this should do:
+#   from bb import multiprocessing
+# in place of
+#   import multiprocessing
+
+class MultiprocessingContext(object):
+    """
+    Multiprocessing proxy object that uses the "fork" context for a property if
+    available, otherwise goes to the main multiprocessing module. This allows
+    it to be a drop-in replacement for the multiprocessing module, but use the
+    fork context
+    """
+    def __init__(self):
+        super().__setattr__("_ctx", mp.get_context("fork"))
+
+    def __getattr__(self, name):
+        if hasattr(self._ctx, name):
+            return getattr(self._ctx, name)
+        return getattr(mp, name)
+
+    def __setattr__(self, name, value):
+        raise AttributeError(f"Unable to set attribute {name}")
+
+multiprocessing = MultiprocessingContext()
 
 
 class NullHandler(logging.Handler):
diff --git a/bitbake/lib/bb/asyncrpc/serv.py b/bitbake/lib/bb/asyncrpc/serv.py
index 35e93f7c96..bd1aded8db 100644
--- a/bitbake/lib/bb/asyncrpc/serv.py
+++ b/bitbake/lib/bb/asyncrpc/serv.py
@@ -11,7 +11,7 @@ import os
 import signal
 import socket
 import sys
-import multiprocessing
+from bb import multiprocessing
 import logging
 from .connection import StreamConnection, WebsocketConnection
 from .exceptions import ClientError, ServerError, ConnectionClosedError, InvokeError
diff --git a/bitbake/lib/bb/cooker.py b/bitbake/lib/bb/cooker.py
index 0ad79bd53e..2eb64ef237 100644
--- a/bitbake/lib/bb/cooker.py
+++ b/bitbake/lib/bb/cooker.py
@@ -12,7 +12,7 @@ import enum
 import sys, os, glob, os.path, re, time
 import itertools
 import logging
-import multiprocessing
+from bb import multiprocessing
 import threading
 from io import StringIO, UnsupportedOperation
 from contextlib import closing
diff --git a/bitbake/lib/bb/server/process.py b/bitbake/lib/bb/server/process.py
index 7d1b38f78c..d0f73590cc 100644
--- a/bitbake/lib/bb/server/process.py
+++ b/bitbake/lib/bb/server/process.py
@@ -13,7 +13,7 @@
 import bb
 import bb.event
 import logging
-import multiprocessing
+from bb import multiprocessing
 import threading
 import array
 import os
diff --git a/bitbake/lib/bb/siggen.py b/bitbake/lib/bb/siggen.py
index a6163b55ea..41eb643012 100644
--- a/bitbake/lib/bb/siggen.py
+++ b/bitbake/lib/bb/siggen.py
@@ -708,7 +708,7 @@ class SignatureGeneratorUniHashMixIn(object):
             try:
                 with self.client() as client:
                     unihashes = client.get_unihash_batch((self._get_method(tid), self.taskhash[tid]) for tid in query_tids)
-            except (ConnectionError, FileNotFoundError) as e:
+            except (ConnectionError, FileNotFoundError, EOFError) as e:
                 bb.warn('Error contacting Hash Equivalence Server %s: %s' % (self.server, str(e)))
 
         for idx, tid in enumerate(query_tids):
@@ -817,7 +817,7 @@ class SignatureGeneratorUniHashMixIn(object):
                     d.setVar('BB_UNIHASH', new_unihash)
                 else:
                     hashequiv_logger.debug('Reported task %s as unihash %s to %s' % (taskhash, unihash, self.server))
-            except (ConnectionError, FileNotFoundError) as e:
+            except (ConnectionError, FileNotFoundError, EOFError) as e:
                 bb.warn('Error contacting Hash Equivalence Server %s: %s' % (self.server, str(e)))
         finally:
             if sigfile:
@@ -859,7 +859,7 @@ class SignatureGeneratorUniHashMixIn(object):
                 # TODO: What to do here?
                 hashequiv_logger.verbose('Task %s unihash reported as unwanted hash %s' % (tid, finalunihash))
 
-        except (ConnectionError, FileNotFoundError) as e:
+        except (ConnectionError, FileNotFoundError, EOFError) as e:
             bb.warn('Error contacting Hash Equivalence Server %s: %s' % (self.server, str(e)))
 
         return False
diff --git a/bitbake/lib/bb/tests/fetch.py b/bitbake/lib/bb/tests/fetch.py
index 077472b8b3..cde1bf3390 100644
--- a/bitbake/lib/bb/tests/fetch.py
+++ b/bitbake/lib/bb/tests/fetch.py
@@ -1465,7 +1465,7 @@ class FetchLatestVersionTest(FetcherTest):
         # combination version pattern
         ("sysprof", "git://git.yoctoproject.org/sysprof.git;protocol=https;branch=master", "cd44ee6644c3641507fb53b8a2a69137f2971219", "", "")
             : "1.2.0",
-        ("u-boot-mkimage", "git://source.denx.de/u-boot/u-boot.git;branch=master;protocol=https", "62c175fbb8a0f9a926c88294ea9f7e88eb898f6c", "", "")
+        ("u-boot-mkimage", "git://git.yoctoproject.org/bbfetchtests-u-boot.git;branch=master;protocol=https", "62c175fbb8a0f9a926c88294ea9f7e88eb898f6c", "", "")
             : "2014.01",
         # version pattern "yyyymmdd"
         ("mobile-broadband-provider-info", "git://git.yoctoproject.org/mobile-broadband-provider-info.git;protocol=https;branch=master", "4ed19e11c2975105b71b956440acdb25d46a347d", "", "")
diff --git a/bitbake/lib/bb/tests/support/httpserver.py b/bitbake/lib/bb/tests/support/httpserver.py
index 78f7660053..03327e923b 100644
--- a/bitbake/lib/bb/tests/support/httpserver.py
+++ b/bitbake/lib/bb/tests/support/httpserver.py
@@ -3,7 +3,7 @@
 #
 
 import http.server
-import multiprocessing
+from bb import multiprocessing
 import os
 import traceback
 import signal
@@ -43,7 +43,7 @@ class HTTPService(object):
         self.process = multiprocessing.Process(target=self.server.server_start, args=[self.root_dir, self.logger])
 
         # The signal handler from testimage.bbclass can cause deadlocks here
-        # if the HTTPServer is terminated before it can restore the standard 
+        # if the HTTPServer is terminated before it can restore the standard
         #signal behaviour
         orig = signal.getsignal(signal.SIGTERM)
         signal.signal(signal.SIGTERM, signal.SIG_DFL)
diff --git a/bitbake/lib/bb/utils.py b/bitbake/lib/bb/utils.py
index c288c826c0..0cf3b1814c 100644
--- a/bitbake/lib/bb/utils.py
+++ b/bitbake/lib/bb/utils.py
@@ -12,7 +12,7 @@ import sys
 import errno
 import logging
 import locale
-import multiprocessing
+from bb import multiprocessing
 import importlib
 import importlib.machinery
 import importlib.util
@@ -1479,24 +1479,6 @@ def process_profilelog(fn, fn_out = None):
         p.print_callers()
 
 
-#
-# Was present to work around multiprocessing pool bugs in python < 2.7.3
-#
-def multiprocessingpool(*args, **kwargs):
-
-    import multiprocessing.pool
-    #import multiprocessing.util
-    #multiprocessing.util.log_to_stderr(10)
-    # Deal with a multiprocessing bug where signals to the processes would be delayed until the work
-    # completes. Putting in a timeout means the signals (like SIGINT/SIGTERM) get processed.
-    def wrapper(func):
-        def wrap(self, timeout=None):
-            return func(self, timeout=timeout if timeout is not None else 1e100)
-        return wrap
-    multiprocessing.pool.IMapIterator.next = wrapper(multiprocessing.pool.IMapIterator.next)
-
-    return multiprocessing.Pool(*args, **kwargs)
-
 def exec_flat_python_func(func, *args, **kwargs):
     """Execute a flat python function (defined with ``def funcname(args): ...``)
 
diff --git a/bitbake/lib/hashserv/tests.py b/bitbake/lib/hashserv/tests.py
index da3f8e0884..124d8aa005 100644
--- a/bitbake/lib/hashserv/tests.py
+++ b/bitbake/lib/hashserv/tests.py
@@ -10,7 +10,7 @@ from .server import DEFAULT_ANON_PERMS, ALL_PERMISSIONS
 from bb.asyncrpc import InvokeError
 import hashlib
 import logging
-import multiprocessing
+from bb import multiprocessing
 import os
 import sys
 import tempfile