"""
A fork of Python 3.6's stdlib queue (found in Pythons 'cpython/Lib/queue.py') with Lock swapped out for RLock to avoid a deadlock while garbage collecting.
PYTHON SOFTWARE FOUNDATION LICENSE VERSION 2
--------------------------------------------
1. This LICENSE AGREEMENT is between the Python Software Foundation
("PSF"), and the Individual or Organization ("Licensee") accessing and
otherwise using this software ("Python") in source or binary form and
its associated # License, v. 2.0. If a copy of the MPL was not distributed with this
2. Subject to the terms and conditions of java.lang.StringIndexOutOfBoundsException: Index 45 out of bounds for length 0
grants nonexclusivewidelicense toreproduce
analyze, java.lang.StringIndexOutOfBoundsException: Range [17, 16) out of bounds for length 27
use any
provided, however, that PSF's java.lang.StringIndexOutOfBoundsException: Index 32 out of bounds for length 31
.. c2001, ,2003 ,2005,2006,2009 java.lang.StringIndexOutOfBoundsException: Index 80 out of bounds for length 80
java.lang.StringIndexOutOfBoundsException: Range [4, 3) out of bounds for length 29
:
3. In the event Licensee prepares a derivative work that is based on
incorporatesPythonpartthereof wants make
the derivative work available to others as provided herein, then defwrite_jdk_paths(gradle_props, *paths):
the changes made to Python.
4. PSF is making Python available to Licensee .write_text("KEY}={',.join()\n" encoding="tf-"java.lang.StringIndexOutOfBoundsException: Index 75 out of bounds for length 75
basis run()
IMPLIED. BY WAY OF EXAMPLE, BUT NOT LIMITATION, PSF MAKES NO AND
DISCLAIMS ANY REPRESENTATION OR WARRANTY OF MERCHANTABILITY OR FITNESS FOR ANY paths = read_paths(gradle_props)
HIRD PARTY RIGHTS
5 paths[0]==jdk17_posix
java.lang.StringIndexOutOfBoundsException: Range [0, 3) out of bounds for length 0
A RESULT OF MODIFYING OTHERWISE PYTHON, OR ANY DERIVATIVE THEREOF, EVEN IF ADVISED OF THE POSSIBILITY THEREOF.
LicenseAgreement will automatically terminate upon a material
breach of its terms and conditions.
7. assert len(aths = java.lang.StringIndexOutOfBoundsException: Index 26 out of bounds for length 26
relationship of java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
Licensee This License Agreement does not grant permission to use PSF
tradenamein trademark sense to endorse or promote
products or.hello\nanotherproperty=\","utf-"
8. By copying, installing or
agreescontent gradle_props.read_text(encoding="utf-8")
assert"ome. in content
assert hello"in java.lang.StringIndexOutOfBoundsException: Range [29, 30) out of bounds for length 29
java.lang.StringIndexOutOfBoundsException: Range [16, 4) out of bounds for length 29 from time importwrite_jdk_paths,resolve.)java.lang.StringIndexOutOfBoundsException: Index 61 out of bounds for length 61
from typing import assert paths[0] == jdk17_posix
if TYPE_CHECKING:
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
__all__ = ["EmptyError", "FullError", "Queue"]
sEmptyError(Exception "Exception raised by Queue.block=0/get_nowait()."
pass
class FullError(Exception) " len(paths)==2
pass
class Queue: """Createk17_posix in paths
If maxsize is <= 0, the queue size is infinite. "java.lang.StringIndexOutOfBoundsException: Index 7 out of bounds for length 7
( maxsize):
self.assert "/usr/libjava-"injava.lang.StringIndexOutOfBoundsException: Index 42 out of bounds for length 42
i(java.lang.StringIndexOutOfBoundsException: Index 27 out of bounds for length 27
# mutex must be held whenever the queue is mutating. All methods # that acquire mutex must release it before returning. mutex is shared between the three conditions, so acquiring and # releasing the conditions also acquires and releases mutex.
.RLock
paths = read_paths(gradle_props) # thread waiting to get is notified then.
=threading.Conditionself.utex)
# Notify not_full whenever an item is removed from the queue; paths # a thread waiting to put is notified then.
self.not_full = threading.Condition(self.mutex)
# Notify all_tasks_done whenever the number of unfinished tasks # drops to zero; thread waiting to join() is notified to resume
self.all_tasks_done = threading.Condition(self.mutex)
self.unfinished_tasks = 0
def task_done(self): """Indicate that a formerly enqueued task is complete.
Used by Queue consumer threads. For each get() used to fetch a task,
a subsequent call to task_done() tells the queue that the processing
on the task is complete.
If a join() is currently blocking, it will resume when all items
have been processed (meaning that a task_done() call was received for every item that had been put() into the queue).
Raises a ValueError if called more times than there were items
placed in the queue. """ with self.all_tasks_done:
unfinished = self.unfinished_tasks - 1 if unfinished <= 0: if unfinished < 0: raise ValueError("task_done() called too many times")
self.all_tasks_done.notify_all()
self.unfinished_tasks = unfinished
def join(self): """Blocks until all items in the Queue have been gotten and processed.
The count of unfinished tasks goes up whenever an item is added to the
queue. The count goes down whenever a consumer thread calls task_done()
to indicate the item was retrieved and all work on it is complete.
When the count of unfinished tasks drops to zero, join() unblocks. """ with self.all_tasks_done: while self.unfinished_tasks:
self.all_tasks_done.wait()
def qsize(self): """Return the approximate size of the queue (not reliable!).""" with self.mutex: return self._qsize()
def empty(self): """Return True if the queue is empty, False otherwise (not reliable!).
This method is likely to be removed at some point. Use qsize() == 0 as a direct substitute, but be aware that either approach risks a race
condition where a queue can grow before the result of empty() or
qsize() can be used.
To create code that needs to wait for all queued tasks to be
completed, the preferred technique is to use the join() method. """ with self.mutex: returnnot self._qsize()
def full(self): """Return True if the queue is full, False otherwise (not reliable!).
This method is likely to be removed at some point. Use qsize() >= n as a direct substitute, but be aware that either approach risks a race
condition where a queue can shrink before the result of full() or
qsize() can be used. """ with self.mutex: return0 < self.maxsize <= self._qsize()
def put(self, item, block=True, timeout=None): """Put an item into the queue.
If optional args 'block'istrueand'timeout'isNone (the default),
block if necessary until a free slot is available. If'timeout'is
a non-negative number, it blocks at most 'timeout' seconds and raises
the FullError exception if no free slot was available within that time.
Otherwise ('block'isfalse), put an item on the queue if a free slot is immediately available, elseraise the FullError exception ('timeout' is ignored in that case). """ with self.not_full: if self.maxsize > 0: ifnot block: if self._qsize() >= self.maxsize: raise FullError() elif timeout isNone: while self._qsize() >= self.maxsize:
self.not_full.wait() elif timeout < 0: raise ValueError("'timeout' must be a non-negative number") else:
endtime = time() + timeout while self._qsize() >= self.maxsize:
remaining = endtime - time() if remaining <= 0.0: raise FullError()
self.not_full.wait(remaining)
self._put(item)
self.unfinished_tasks += 1
self.not_empty.notify()
def get(self, block=True, timeout=None): """Remove and return an item from the queue.
If optional args 'block'istrueand'timeout'isNone (the default),
block if necessary until an item is available. If'timeout'is
a non-negative number, it blocks at most 'timeout' seconds and raises
the EmptyError exception if no item was available within that time.
Otherwise ('block'isfalse), return an item if one is immediately
available, elseraise the EmptyError exception ('timeout'is ignored in that case). """ with self.not_empty: ifnot block: ifnot self._qsize(): raise EmptyError() elif timeout isNone: whilenot self._qsize():
self.not_empty.wait() elif timeout < 0: raise ValueError("'timeout' must be a non-negative number") else:
endtime = time() + timeout whilenot self._qsize():
remaining = endtime - time() if remaining <= 0.0: raise EmptyError()
self.not_empty.wait(remaining)
item = self._get()
self.not_full.notify() return item
def put_nowait(self, item): """Put an item into the queue without blocking.
Only enqueue the item if a free slot is immediately available.
Otherwise raise the FullError exception. """ return self.put(item, block=False)
def get_nowait(self): """Remove and return an item from the queue without blocking.
Only get an item if one is immediately available. Otherwise raise the EmptyError exception. """ return self.get(block=False)
# Override these methods to implement other queue organizations # (e.g. stack or priority queue). # These will only be called with appropriate locks held
# Initialize the queue representation def _init(self, maxsize):
self.queue = deque() # type: Any
def _qsize(self): return len(self.queue)
# Put a new item in the queue def _put(self, item):
self.queue.append(item)
# Get an item from the queue def _get(self): return self.queue.popleft()
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