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# Copyright (c) Microsoft Corporation. All rights reserved.
# Licensed under the MIT License. See LICENSE in the project root
# for license information.
"""Provides facilities to dump all stacks of all threads in the process.
"""
import os
import sys
import time
import threading
import traceback
from debugpy.common import log
def dump():
"""Dump stacks of all threads in this process, except for the current thread."""
tid = threading.current_thread().ident
pid = os.getpid()
log.info("Dumping stacks for process {0}...", pid)
for t_ident, frame in sys._current_frames().items():
if t_ident == tid:
continue
for t in threading.enumerate():
if t.ident == tid:
t_name = t.name
t_daemon = t.daemon
break
else:
t_name = t_daemon = "<unknown>"
stack = "".join(traceback.format_stack(frame))
log.info(
"Stack of thread {0} (tid={1}, pid={2}, daemon={3}):\n\n{4}",
t_name,
t_ident,
pid,
t_daemon,
stack,
)
log.info("Finished dumping stacks for process {0}.", pid)
def dump_after(secs):
"""Invokes dump() on a background thread after waiting for the specified time."""
def dumper():
time.sleep(secs)
try:
dump()
except:
log.swallow_exception()
thread = threading.Thread(target=dumper)
thread.daemon = True
thread.start()
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