def accept(self):
logging.debug('connection accepted')
conn = self.server.nextPendingConnection()
conn.waitForReadyRead()
key = str(conn.read(36))
memory = QSharedMemory()
memory.setKey(key)
memory.attach()
logging.debug('attached to memory %s with size %s'%(key, memory.size()))
atexit.register(memory.detach)
self.conns.append(conn)
self.shared_mems.append(memory)
conn.readyRead.connect(lambda: self.read_from(conn, memory))
conn.disconnected.connect(memory.detach)
conn.write('ok')
class LivePlotClient(object):
def __init__(self, timeout=2000, size=2**20):
self.app = QCoreApplication.instance()
if self.app is None:
self.app = QCoreApplication([])
self.sock = QLocalSocket()
self.sock.connectToServer("LivePlot")
if not self.sock.waitForConnected():
raise EnvironmentError("Couldn't find LivePlotter instance")
self.sock.disconnected.connect(self.disconnect_received)
key = str(uuid.uuid4())
self.shared_mem = QSharedMemory(key)
if not self.shared_mem.create(size):
raise Exception("Couldn't create shared memory %s" % self.shared_mem.errorString())
logging.debug('Memory created with key %s and size %s' % (key, self.shared_mem.size()))
self.sock.write(key)
self.sock.waitForBytesWritten()
self.is_connected = True
self.timeout = timeout
atexit.register(self.close)
def close(self):
self.shared_mem.detach()
def send_to_plotter(self, meta, arr=None):
if not self.is_connected:
return
if meta["name"] is None:
meta["name"] = "*";
if arr is not None:
arrbytes = bytearray(arr)
arrsize = len(arrbytes)
if arrsize > self.shared_mem.size():
raise ValueError("Array too big %s > %s" % (arrsize, self.shared_mem.size()))
meta['arrsize'] = arrsize
meta['dtype'] = str(arr.dtype)
meta['shape'] = arr.shape
else:
meta['arrsize'] = 0
meta_bytes = json.dumps(meta).ljust(200)
if len(meta_bytes) > 200:
raise ValueError("meta object is too large (> 200 char)")
if arr is None:
self.sock.write(meta_bytes)
else:
if not self.sock.bytesAvailable():
self.sock.waitForReadyRead()
self.sock.read(2)
self.shared_mem.lock()
self.sock.write(meta_bytes)
region = self.shared_mem.data()
region[:arrsize] = arrbytes
self.shared_mem.unlock()
def plot_y(self, name, arr, extent=None, start_step=None):
arr = np.array(arr)
if extent is not None and start_step is not None:
raise ValueError('extent and start_step provide the same info and are thus mutually exclusive')
if extent is not None:
x0, x1 = extent
nx = len(arr)
start_step = x0, float(x1 - x0)/nx
meta = {
'name': name,
'operation':'plot_y',
'start_step': start_step,
'rank': 1,
}
self.send_to_plotter(meta, arr)
def plot_z(self, name, arr, extent=None, start_step=None):
'''
extent is ((initial x, final x), (initial y, final y))
start_step is ((initial x, delta x), (initial_y, final_y))
'''
arr = np.array(arr)
if extent is not None and start_step is not None:
raise ValueError('extent and start_step provide the same info and are thus mutually exclusive')
if extent is not None:
(x0, x1), (y0, y1) = extent
nx, ny = arr.shape
start_step = (x0, float(x1 - x0)/nx), (y0, float(y1 - y0)/ny)
meta = {
'name': name,
'operation':'plot_z',
'rank': 2,
'start_step': start_step,
}
self.send_to_plotter(meta, arr)
def plot_xy(self, name, xs, ys):
arr = np.array([xs, ys])
meta = {
'name': name,
'operation':'plot_xy',
'rank': 1,
}
self.send_to_plotter(meta, np.array([xs, ys]))
def append_y(self, name, point, start_step=None):
self.send_to_plotter({
'name': name,
'operation': 'append_y',
'value': point,
'start_step': start_step,
'rank': 1,
})
def append_xy(self, name, x, y):
self.send_to_plotter({
'name': name,
'operation': 'append_xy',
'value': (x, y),
'rank': 1,
})
def append_z(self, name, arr, start_step=None):
arr = np.array(arr)
meta = {
'name': name,
'operation':'append_z',
'rank': 2,
'start_step': start_step,
}
self.send_to_plotter(meta, arr)
def clear(self, name=None):
self.send_to_plotter({
'name': name,
'operation': 'clear'
})
def hide(self, name=None):
self.send_to_plotter({
'name': name,
'operation': 'close'
})
def remove(self, name=None):
self.send_to_plotter({
'name': name,
'operation': 'remove'
})
def disconnect_received(self):
self.is_connected = False
warnings.warn('Disconnected from LivePlotter server, plotting has been disabled')
class LivePlotClient(object):
def __init__(self, timeout=2000, size=2**20):
self.app = QCoreApplication.instance()
if self.app is None:
self.app = QCoreApplication([])
self.sock = QLocalSocket()
self.sock.connectToServer("LivePlot")
if not self.sock.waitForConnected():
raise EnvironmentError("Couldn't find LivePlotter instance")
self.sock.disconnected.connect(self.disconnect_received)
key = str(uuid.uuid4())
self.shared_mem = QSharedMemory(key)
if not self.shared_mem.create(size):
raise Exception("Couldn't create shared memory %s" %
self.shared_mem.errorString())
logging.debug('Memory created with key %s and size %s' %
(key, self.shared_mem.size()))
self.sock.write(key)
self.sock.waitForBytesWritten()
self.is_connected = True
self.timeout = timeout
atexit.register(self.close)
def close(self):
self.shared_mem.detach()
def send_to_plotter(self, meta, arr=None):
if not self.is_connected:
return
if meta["name"] is None:
meta["name"] = "*"
if arr is not None:
arrbytes = bytearray(arr)
arrsize = len(arrbytes)
if arrsize > self.shared_mem.size():
raise ValueError("Array too big %s > %s" %
(arrsize, self.shared_mem.size()))
meta['arrsize'] = arrsize
meta['dtype'] = str(arr.dtype)
meta['shape'] = arr.shape
else:
meta['arrsize'] = 0
meta_bytes = json.dumps(meta).ljust(200)
if len(meta_bytes) > 200:
raise ValueError("meta object is too large (> 200 char)")
if arr is None:
self.sock.write(meta_bytes)
else:
if not self.sock.bytesAvailable():
self.sock.waitForReadyRead()
self.sock.read(2)
self.shared_mem.lock()
self.sock.write(meta_bytes)
region = self.shared_mem.data()
region[:arrsize] = arrbytes
self.shared_mem.unlock()
def plot_y(self, name, arr, extent=None, start_step=None):
arr = np.array(arr)
if extent is not None and start_step is not None:
raise ValueError(
'extent and start_step provide the same info and are thus mutually exclusive'
)
if extent is not None:
x0, x1 = extent
nx = len(arr)
start_step = x0, float(x1 - x0) / nx
meta = {
'name': name,
'operation': 'plot_y',
'start_step': start_step,
'rank': 1,
}
self.send_to_plotter(meta, arr)
def plot_z(self, name, arr, extent=None, start_step=None):
'''
extent is ((initial x, final x), (initial y, final y))
start_step is ((initial x, delta x), (initial_y, final_y))
'''
arr = np.array(arr)
if extent is not None and start_step is not None:
raise ValueError(
'extent and start_step provide the same info and are thus mutually exclusive'
)
if extent is not None:
(x0, x1), (y0, y1) = extent
nx, ny = arr.shape
start_step = (x0, float(x1 - x0) / nx), (y0, float(y1 - y0) / ny)
meta = {
'name': name,
'operation': 'plot_z',
'rank': 2,
'start_step': start_step,
}
self.send_to_plotter(meta, arr)
def plot_xy(self, name, xs, ys):
arr = np.array([xs, ys])
meta = {
'name': name,
'operation': 'plot_xy',
'rank': 1,
}
self.send_to_plotter(meta, np.array([xs, ys]))
def append_y(self, name, point, start_step=None):
self.send_to_plotter({
'name': name,
'operation': 'append_y',
'value': point,
'start_step': start_step,
'rank': 1,
})
def append_xy(self, name, x, y):
self.send_to_plotter({
'name': name,
'operation': 'append_xy',
'value': (x, y),
'rank': 1,
})
def append_z(self, name, arr, start_step=None):
arr = np.array(arr)
meta = {
'name': name,
'operation': 'append_z',
'rank': 2,
'start_step': start_step,
}
self.send_to_plotter(meta, arr)
def clear(self, name=None):
self.send_to_plotter({'name': name, 'operation': 'clear'})
def hide(self, name=None):
self.send_to_plotter({'name': name, 'operation': 'close'})
def remove(self, name=None):
self.send_to_plotter({'name': name, 'operation': 'remove'})
def disconnect_received(self):
self.is_connected = False
warnings.warn(
'Disconnected from LivePlotter server, plotting has been disabled')
