def run_calibre_debug(*args, **kw):
import subprocess
creationflags = 0
if iswindows:
creationflags = subprocess.CREATE_NO_WINDOW
cmd = get_debug_executable() + list(args)
kw['creationflags'] = creationflags
return subprocess.Popen(cmd, **kw)
def send_message_via_worker(msg, address=None, timeout=5, wait_till_sent=False):
# On Windows sending a message in a process that also is listening on the
# same named pipe in a different thread deadlocks, so we do the actual sending in
# a simple worker process
import json
import subprocess
from calibre.startup import get_debug_executable
cmd = get_debug_executable() + [
'-c', 'from calibre.gui2.listener import *; import sys, json;'
'send_message_implementation(sys.stdin.buffer.read(), address=json.loads(sys.argv[-2]), timeout=int(sys.argv[-1]))',
json.dumps(address), str(timeout)]
p = subprocess.Popen(cmd, stdin=subprocess.PIPE)
if isinstance(msg, str):
msg = msg.encode('utf-8')
with closing(p.stdin):
p.stdin.write(msg)
if wait_till_sent:
return p.wait(timeout=timeout) == 0
