lsst.ctrl.pool.pool.PickleHolder Class Reference

Public Member Functions
def	__new__ (cls, hold=None)
def	__init__ (self, hold=None)
def	__enter__ (self)
def	__exit__ (self, excType, excVal, tb)

Public Attributes
	obj

Detailed Description

Singleton to hold what's about to be pickled.

We hold onto the object in case there's trouble pickling,
so we can figure out what class in particular is causing
the trouble.

The held object is in the 'obj' attribute.

Here we use the __new__-style singleton pattern, because
we specifically want __init__ to be called each time.

Definition at line 126 of file pool.py.

Constructor & Destructor Documentation

__init__()

def lsst.ctrl.pool.pool.PickleHolder.__init__	(		self,
			hold = None
	)

Hold onto new object

Definition at line 148 of file pool.py.

    def __init__(self, hold=None):
        """Hold onto new object"""
        if hold is not None:
            self.obj = hold
 

Member Function Documentation

__enter__()

def lsst.ctrl.pool.pool.PickleHolder.__enter__

(

self

)

Definition at line 153 of file pool.py.

    def __enter__(self):
        pass
 

__exit__()

def lsst.ctrl.pool.pool.PickleHolder.__exit__	(		self,
			excType,
			excVal,
			tb
	)

Drop held object if there were no problems

Definition at line 156 of file pool.py.

    def __exit__(self, excType, excVal, tb):
        """Drop held object if there were no problems"""
        if excType is None:
            self.obj = None
 
 

__new__()

def lsst.ctrl.pool.pool.PickleHolder.__new__	(		cls,
			hold = None
	)

Definition at line 141 of file pool.py.

    def __new__(cls, hold=None):
        if cls._instance is None:
            cls._instance = super(PickleHolder, cls).__new__(cls)
            cls._instance.__init__(hold)
            cls._instance.obj = None
        return cls._instance
 

Member Data Documentation

obj

lsst.ctrl.pool.pool.PickleHolder.obj

Definition at line 151 of file pool.py.

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The documentation for this class was generated from the following file:

• /j/snowflake/release/lsstsw/stack/lsst-scipipe-0.7.0/Linux64/ctrl_pool/22.0.1-2-g92698f7+dcf3732eb2/python/lsst/ctrl/pool/pool.py