d76a3f534d
The helper script was printing an error to stdout when it couldn't find any qemu child processes; output this error to stderr instead and redirect stderr to /dev/null when running from qemuimage-testlib so that QEMUPID is actually blank if there are no qemu instances found. (From OE-Core rev: 21edf5ec12d8307c528f157c8e078dbefe25d1ef) Signed-off-by: Paul Eggleton <paul.eggleton@linux.intel.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
1.6 KiB
Executable File
#!/usr/bin/env python
import optparse import subprocess import sys
parser = optparse.OptionParser( usage = """ %prog [options] """)
parser.add_option("-q", "--findqemu", help = "find a qemu beneath the process ", action="store", dest="findqemu")
options, args = parser.parse_args(sys.argv)
if options.findqemu: # # Walk the process tree from the process specified looking for a qemu-system. Return its pid. # ps = subprocess.Popen(['ps', 'ax', '-o', 'pid,ppid,command'], stdout=subprocess.PIPE).communicate()[0] processes = ps.split('\n') nfields = len(processes[0].split()) - 1 pids = {} commands = {} for row in processes[1:]: data = row.split(None, nfields) if len(data) != 3: continue if data[1] not in pids: pids[data[1]] = [] pids[data[1]].append(data[0]) commands[data[0]] = data[2]
if options.findqemu not in pids:
sys.stderr.write("No children found matching %s" % options.findqemu)
sys.exit(1)
parents = []
newparents = pids[options.findqemu]
while newparents:
next = []
for p in newparents:
if p in pids:
for n in pids[p]:
if n not in parents and n not in next:
next.append(n)
if p not in parents:
parents.append(p)
newparents = next
#print "Children matching %s:" % str(parents)
for p in parents:
if "qemu-system" in commands[p]:
print p
sys.exit(0)
sys.exit(1)
else: parser.print_help()