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"""Implements the standard thread module, using greenthreads."""
from six.moves import _thread as __thread
import six
from eventlet.support import greenlets as greenlet
from eventlet import greenthread
from eventlet.lock import Lock
import sys
__patched__ = ['get_ident', 'start_new_thread', 'start_new', 'allocate_lock',
'allocate', 'exit', 'interrupt_main', 'stack_size', '_local',
'LockType', 'Lock', '_count']
error = __thread.error
LockType = Lock
__threadcount = 0
if hasattr(__thread, "_is_main_interpreter"):
_is_main_interpreter = __thread._is_main_interpreter
if six.PY3:
def _set_sentinel():
# TODO this is a dummy code, reimplementing this may be needed:
# https://hg.python.org/cpython/file/b5e9bc4352e1/Modules/_threadmodule.c#l1203
return allocate_lock()
TIMEOUT_MAX = __thread.TIMEOUT_MAX
def _count():
return __threadcount
def get_ident(gr=None):
if gr is None:
return id(greenlet.getcurrent())
else:
return id(gr)
def __thread_body(func, args, kwargs):
global __threadcount
__threadcount += 1
try:
func(*args, **kwargs)
finally:
__threadcount -= 1
def start_new_thread(function, args=(), kwargs=None):
if (sys.version_info >= (3, 4)
and getattr(function, '__module__', '') == 'threading'
and hasattr(function, '__self__')):
# Since Python 3.4, threading.Thread uses an internal lock
# automatically released when the python thread state is deleted.
# With monkey patching, eventlet uses green threads without python
# thread state, so the lock is not automatically released.
#
# Wrap _bootstrap_inner() to release explicitly the thread state lock
# when the thread completes.
thread = function.__self__
bootstrap_inner = thread._bootstrap_inner
def wrap_bootstrap_inner():
try:
bootstrap_inner()
finally:
# The lock can be cleared (ex: by a fork())
if thread._tstate_lock is not None:
thread._tstate_lock.release()
thread._bootstrap_inner = wrap_bootstrap_inner
kwargs = kwargs or {}
g = greenthread.spawn_n(__thread_body, function, args, kwargs)
return get_ident(g)
start_new = start_new_thread
def allocate_lock(*a):
return LockType(1)
allocate = allocate_lock
def exit():
raise greenlet.GreenletExit
exit_thread = __thread.exit_thread
def interrupt_main():
curr = greenlet.getcurrent()
if curr.parent and not curr.parent.dead:
curr.parent.throw(KeyboardInterrupt())
else:
raise KeyboardInterrupt()
if hasattr(__thread, 'stack_size'):
__original_stack_size__ = __thread.stack_size
def stack_size(size=None):
if size is None:
return __original_stack_size__()
if size > __original_stack_size__():
return __original_stack_size__(size)
else:
pass
# not going to decrease stack_size, because otherwise other greenlets in
# this thread will suffer
from eventlet.corolocal import local as _local
if hasattr(__thread, 'daemon_threads_allowed'):
daemon_threads_allowed = __thread.daemon_threads_allowed