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#! /usr/bin/env python
# encoding: utf-8
# Thomas Nagy, 2015 (ita)
# TODO: have the child process terminate if the parent is killed abruptly
import os, socket, threading, sys, subprocess, time, atexit, random
try:
from queue import Queue
except ImportError:
from Queue import Queue
import json as pickle
SHARED_KEY = None
HEADER_SIZE = 64
REQ = 'REQ'
RES = 'RES'
BYE = 'BYE'
def make_header(params, cookie=''):
header = ','.join(params)
header = header.ljust(HEADER_SIZE - len(cookie))
assert(len(header) == HEADER_SIZE - len(cookie))
header = header + cookie
if sys.hexversion > 0x3000000:
header = header.encode('iso8859-1')
return header
if 1:
from waflib import Logs, Utils, Runner, Errors, Options
def init_task_pool(self):
# lazy creation, and set a common pool for all task consumers
pool = self.pool = []
for i in range(self.numjobs):
consumer = Runner.get_pool()
pool.append(consumer)
consumer.idx = i
self.ready = Queue(0)
def setq(consumer):
consumer.ready = self.ready
try:
threading.current_thread().idx = consumer.idx
except Exception as e:
print(e)
for x in pool:
x.ready.put(setq)
return pool
Runner.Parallel.init_task_pool = init_task_pool
def make_server(bld, idx):
top = getattr(bld, 'preforkjava_top', os.path.dirname(os.path.abspath('__file__')))
cp = getattr(bld, 'preforkjava_cp', os.path.join(top, 'minimal-json-0.9.3-SNAPSHOT.jar') + os.pathsep + top)
for x in cp.split(os.pathsep):
if x and not os.path.exists(x):
Logs.warn('Invalid classpath: %r' % cp)
Logs.warn('Set for example bld.preforkjava_cp to /path/to/minimal-json:/path/to/Prefork.class/')
cwd = getattr(bld, 'preforkjava_cwd', top)
port = getattr(bld, 'preforkjava_port', 51200)
cmd = getattr(bld, 'preforkjava_cmd', 'java -cp %s%s Prefork %d' % (cp, os.pathsep, port))
proc = subprocess.Popen(cmd.split(), shell=False, cwd=cwd)
proc.port = port
return proc
def make_conn(bld, srv):
#port = PORT + idx
port = srv.port
conn = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
conn.setsockopt(socket.IPPROTO_TCP, socket.TCP_NODELAY, 1)
conn.connect(('127.0.0.1', port))
return conn
SERVERS = []
CONNS = []
def close_all():
global SERVERS
while SERVERS:
srv = SERVERS.pop()
#pid = srv.pid
try:
srv.kill()
except Exception:
pass
atexit.register(close_all)
def put_data(conn, data):
cnt = 0
while cnt < len(data):
sent = conn.send(data[cnt:])
if sent == 0:
raise RuntimeError('connection ended')
cnt += sent
def read_data(conn, siz):
cnt = 0
buf = []
while cnt < siz:
data = conn.recv(min(siz - cnt, 1024))
if not data:
raise RuntimeError('connection ended %r %r' % (cnt, siz))
buf.append(data)
cnt += len(data)
if sys.hexversion > 0x3000000:
ret = ''.encode('iso8859-1').join(buf)
else:
ret = ''.join(buf)
return ret
def exec_command(self, cmd, **kw):
if 'stdout' in kw:
if kw['stdout'] not in (None, subprocess.PIPE):
return self.exec_command_old(cmd, **kw)
elif 'stderr' in kw:
if kw['stderr'] not in (None, subprocess.PIPE):
return self.exec_command_old(cmd, **kw)
kw['shell'] = isinstance(cmd, str)
Logs.debug('runner: %r' % cmd)
Logs.debug('runner_env: kw=%s' % kw)
if self.logger:
self.logger.info(cmd)
if 'stdout' not in kw:
kw['stdout'] = subprocess.PIPE
if 'stderr' not in kw:
kw['stderr'] = subprocess.PIPE
if Logs.verbose and not kw['shell'] and not Utils.check_exe(cmd[0]):
raise Errors.WafError("Program %s not found!" % cmd[0])
idx = threading.current_thread().idx
kw['cmd'] = cmd
data = pickle.dumps(kw)
params = [REQ, str(len(data))]
header = make_header(params, self.SHARED_KEY)
conn = CONNS[idx]
if sys.hexversion > 0x3000000:
data = data.encode('iso8859-1')
put_data(conn, header + data)
data = read_data(conn, HEADER_SIZE)
if sys.hexversion > 0x3000000:
data = data.decode('iso8859-1')
#print("received %r" % data)
lst = data.split(',')
ret = int(lst[1])
dlen = int(lst[2])
out = err = None
if dlen:
data = read_data(conn, dlen)
(out, err, exc) = pickle.loads(data)
if exc:
raise Errors.WafError('Execution failure: %s' % exc)
if out:
if not isinstance(out, str):
out = out.decode(sys.stdout.encoding or 'iso8859-1')
if self.logger:
self.logger.debug('out: %s' % out)
else:
Logs.info(out, extra={'stream':sys.stdout, 'c1': ''})
if err:
if not isinstance(err, str):
err = err.decode(sys.stdout.encoding or 'iso8859-1')
if self.logger:
self.logger.error('err: %s' % err)
else:
Logs.info(err, extra={'stream':sys.stderr, 'c1': ''})
return ret
def init_key(ctx):
try:
key = ctx.SHARED_KEY = os.environ['SHARED_KEY']
except KeyError:
key = "".join([chr(random.SystemRandom().randint(40, 126)) for x in range(20)])
os.environ['SHARED_KEY'] = ctx.SHARED_KEY = key
os.environ['PREFORKPID'] = str(os.getpid())
return key
def init_servers(ctx, maxval):
while len(SERVERS) < 1:
i = len(SERVERS)
srv = make_server(ctx, i)
SERVERS.append(srv)
while len(CONNS) < maxval:
i = len(CONNS)
srv = SERVERS[0]
conn = None
for x in range(30):
try:
conn = make_conn(ctx, srv)
break
except socket.error:
time.sleep(0.01)
if not conn:
raise ValueError('Could not start the server!')
CONNS.append(conn)
def init_smp(self):
if not getattr(Options.options, 'smp', getattr(self, 'smp', None)):
return
if Utils.unversioned_sys_platform() in ('freebsd',):
pid = os.getpid()
cmd = ['cpuset', '-l', '0', '-p', str(pid)]
elif Utils.unversioned_sys_platform() in ('linux',):
pid = os.getpid()
cmd = ['taskset', '-pc', '0', str(pid)]
if cmd:
self.cmd_and_log(cmd, quiet=0)
def options(opt):
opt.add_option('--pin-process', action='store_true', dest='smp', default=False)
init_key(opt)
init_servers(opt, 40)
def build(bld):
if bld.cmd == 'clean':
return
init_key(bld)
init_servers(bld, bld.jobs)
init_smp(bld)
bld.__class__.exec_command_old = bld.__class__.exec_command
bld.__class__.exec_command = exec_command
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