def removeProcess(pid):
"""\internal
\brief Called if a process leaves the system to ensure that no references that the process had remain in the system.
If a process exits normally then all this should be unnessicary, however we can't trust user processes.
"""
# check it actually is a process and not another node
if utils.isThreadId(pid):
tid = pid
pid = utils.getProcessIdFromThreadId(pid)
del threads[tid]
pthreads[pid].remove(tid)
if len(pthreads[pid]) > 0:
for ts in local_ts:
if local_ts[ts].isDeadLocked():
local_ts[ts].unblockRandom()
return
if not utils.isProcessId(pid):
return
# check that it wasn't blocked when the connection was lost
for tid in blocked_threads.keys():
if utils.getProcessIdFromThreadId(tid) == pid:
del blocked_threads[tid]
del pthreads[pid]
if _linda_server.use_types and _linda_server.register_types:
unregisterTypesFromProcess(pid)
# remove any references the process may have had to our tuplespaces
for ts in local_ts:
local_ts.deleteAllReferences(ts, pid)
def removeProcess(pid):
"""\internal
\brief Called if a process leaves the system to ensure that no references that the process had remain in the system.
If a process exits normally then all this should be unnessicary, however we can't trust user processes.
"""
# check it actually is a process and not another node
if utils.isThreadId(pid):
tid = pid
pid = utils.getProcessIdFromThreadId(pid)
del threads[tid]
pthreads[pid].remove(tid)
if len(pthreads[pid]) > 0:
for ts in local_ts:
if local_ts[ts].isDeadLocked():
local_ts[ts].unblockRandom()
return
if not utils.isProcessId(pid):
return
# check that it wasn't blocked when the connection was lost
for tid in blocked_threads.keys():
if utils.getProcessIdFromThreadId(tid) == pid:
del blocked_threads[tid]
del pthreads[pid]
if _linda_server.use_types and _linda_server.register_types:
unregisterTypesFromProcess(pid)
# remove any references the process may have had to our tuplespaces
for ts in local_ts:
local_ts.deleteAllReferences(ts, pid)
def add_reference(self, req, msgid, message, data):
ts, ref = str(data[0]), str(data[1])
if utils.isThreadId(ref):
ref = utils.getProcessIdFromThreadId(ref)
if not local_ts.has_key(ts):
local_ts.newTupleSpace(ts)
local_ts.addReference(ts, ref)
req.send(msgid, (done, ))
def add_reference(self, req, msgid, message, data):
ts, ref = str(data[0]), str(data[1])
if utils.isThreadId(ref):
ref = utils.getProcessIdFromThreadId(ref)
if not local_ts.has_key(ts):
local_ts.newTupleSpace(ts)
local_ts.addReference(ts, ref)
req.send(msgid, (done, ))
def delete_reference(self, req, msgid, message, data):
ts, ref = str(data[0]), str(data[1])
if ts == "UTS":
req.send(msgid, (done, ))
return
if utils.isThreadId(ref):
ref = utils.getProcessIdFromThreadId(ref)
# see the note in the TupleSpace.removeallreference for an explanation of the killlock
try:
local_ts[ts].killlock.acquire()
except KeyError:
pass
else:
threading.Thread(target=local_ts.deleteReference, args=(ts, ref)).start()
req.send(msgid, (done, ))
def delete_reference(self, req, msgid, message, data):
ts, ref = str(data[0]), str(data[1])
if ts == "UTS":
req.send(msgid, (done, ))
return
if utils.isThreadId(ref):
ref = utils.getProcessIdFromThreadId(ref)
# see the note in the TupleSpace.removeallreference for an explanation of the killlock
try:
local_ts[ts].killlock.acquire()
except KeyError:
pass
else:
threading.Thread(target=local_ts.deleteReference,
args=(ts, ref)).start()
req.send(msgid, (done, ))