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gevent: add atexit close for the hogging detection thread #20

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merged 1 commit into from
Aug 17, 2022
Merged

gevent: add atexit close for the hogging detection thread #20

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15 changes: 13 additions & 2 deletions easypy/gevent.py
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Original file line number Diff line number Diff line change
Expand Up @@ -9,6 +9,7 @@ def is_module_patched(*_, **__):
from logging import getLogger
import threading # this will be reloaded after patching

import atexit
import time
import sys

Expand All @@ -26,6 +27,8 @@ def is_module_patched(*_, **__):

HOGGING_TIMEOUT = 1

_HOGGING_DETECTION_RUNNING = False


def apply_patch(hogging_detection=False, real_threads=1):
_logger.info('applying gevent patch (%s real threads)', real_threads)
Expand Down Expand Up @@ -63,7 +66,15 @@ def apply_patch(hogging_detection=False, real_threads=1):
if hogging_detection:
import greenlet
greenlet.settrace(lambda *args: _greenlet_trace_func(*args))
defer_to_thread(detect_hogging, 'detect-hogging')
global _HOGGING_DETECTION_RUNNING
_HOGGING_DETECTION_RUNNING = True
wait = defer_to_thread(detect_hogging, 'detect-hogging')

@atexit.register
def stop_detection():
global _HOGGING_DETECTION_RUNNING
_HOGGING_DETECTION_RUNNING = False
wait()


def _patch_module_locks():
Expand Down Expand Up @@ -133,7 +144,7 @@ def mark_switch(event, args):
current_blocker_time = 0
last_warning_time = 0

while True:
while _HOGGING_DETECTION_RUNNING:
non_gevent_sleep(HOGGING_TIMEOUT)
if did_switch:
# all good
Expand Down