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"""
Execute a GTK based program under broadway so that it can render without an
X backend.
"""
import argparse
import errno
import logging
import os
import subprocess
import sys
logger = logging.getLogger(__name__)
def pop_proc(procs, pid):
for idx, proc in list(enumerate(procs)):
if proc.pid == pid:
return procs.pop(idx)
raise ValueError("Unexpected pid: {}".format(pid))
def main():
parser = argparse.ArgumentParser(description=__doc__)
parser.add_argument(
"-d", "--display-no", default=5, type=int,
help="which display number the server should listen on")
parser.add_argument(
"--cwd", help="change to working directory to execute the program")
parser.add_argument(
"--executable",
help="path to the binary to run, if the entry in argv[0] is different")
parser.add_argument(
"argv", nargs=argparse.REMAINDER)
args = parser.parse_args()
broadway = subprocess.Popen(["broadwayd", ":{:d}".format(args.display_no)])
subenv = os.environ.copy()
subenv["GDK_BACKEND"] = "broadway"
subenv["BROADWAY_DISPLAY"] = ":{:d}".format(args.display_no)
app = subprocess.Popen(
args.argv, executable=args.executable, env=subenv, cwd=args.cwd)
procs = [broadway, app]
app_status = 1
while procs:
try:
(pid, wstatus, _rusage) = os.wait4(-1, 0)
pop_proc(procs, pid)
if pid == app.pid:
broadway.kill()
app_status = wstatus
except OSError as err:
if err.errno == errno.EAGAIN:
continue
logger.exception("Error waiting for children")
break
if os.WIFEXITED(app_status):
return os.WEXITSTATUS(app_status)
if os.WIFSIGNALED(app_status):
return -os.WSTOPSIG(app_status)
return -1
if __name__ == "__main__":
sys.exit(main())
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