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fix client_mutex lockup

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This commit is contained in:
ha7ilm 2014-12-02 00:30:21 +01:00
parent 8572479e9c
commit 5d38c21039
2 changed files with 27 additions and 16 deletions
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41
openwebrx.py
View File

@ -224,6 +224,7 @@ class WebRXHandler(BaseHTTPRequestHandler):
def do_GET(self): def do_GET(self):
global dsp_plugin global dsp_plugin
global clients_mutex
rootdir = 'htdocs' rootdir = 'htdocs'
self.path=self.path.replace("..","") self.path=self.path.replace("..","")
path_temp_parts=self.path.split("?") path_temp_parts=self.path.split("?")
@ -236,16 +237,17 @@ class WebRXHandler(BaseHTTPRequestHandler):
if self.path[:4]=="/ws/": if self.path[:4]=="/ws/":
try: try:
# ========= WebSocket handshake ========= # ========= WebSocket handshake =========
ws_success=True
try: try:
rxws.handshake(self) rxws.handshake(self)
clients_mutex.acquire() clients_mutex.acquire()
client_i=get_client_by_id(self.path[4:], False) client_i=get_client_by_id(self.path[4:], False)
myclient=clients[client_i] myclient=clients[client_i]
clients_mutex.release() except rxws.WebSocketException: ws_success=False
except rxws.WebSocketException: except ClientNotFoundException: ws_success=False
self.send_error(400, 'Bad request.') finally:
return if clients_mutex.locked(): clients_mutex.release()
except ClientNotFoundException: if not ws_success:
self.send_error(400, 'Bad request.') self.send_error(400, 'Bad request.')
return return
@ -310,25 +312,33 @@ class WebRXHandler(BaseHTTPRequestHandler):
dsp.set_bpf(*new_bpf) dsp.set_bpf(*new_bpf)
#code.interact(local=locals()) #code.interact(local=locals())
except: except:
print "[openwebrx-httpd] exception happened at all"
exc_type, exc_value, exc_traceback = sys.exc_info() exc_type, exc_value, exc_traceback = sys.exc_info()
if exc_value[0]==32: #"broken pipe", client disconnected if exc_value[0]==32: #"broken pipe", client disconnected
pass pass
elif exc_value[0]==11: #"resource unavailable" on recv, client disconnected elif exc_value[0]==11: #"resource unavailable" on recv, client disconnected
pass pass
else: else:
print "[openwebrx-httpd] error: ",exc_type,exc_value print "[openwebrx-httpd] error in /ws/ handler: ",exc_type,exc_value
traceback.print_tb(exc_traceback) traceback.print_tb(exc_traceback)
#delete disconnected client
#stop dsp for the disconnected client
try: try:
dsp.stop() dsp.stop()
del dsp del dsp
except: except:
pass print "[openwebrx-httpd] error in dsp.stop()"
clients_mutex.acquire()
id_to_close=get_client_by_id(myclient.id,False) #delete disconnected client
close_client(id_to_close,False) try:
clients_mutex.release() clients_mutex.acquire()
id_to_close=get_client_by_id(myclient.id,False)
close_client(id_to_close,False)
except:
exc_type, exc_value, exc_traceback = sys.exc_info()
print "[openwebrx-httpd] client cannot be closed: ",exc_type,exc_value
traceback.print_tb(exc_traceback)
finally:
clients_mutex.release()
return return
else: else:
f=open(rootdir+self.path) f=open(rootdir+self.path)
@ -375,8 +385,9 @@ class WebRXHandler(BaseHTTPRequestHandler):
self.send_error(404, 'Invalid path.') self.send_error(404, 'Invalid path.')
except: except:
exc_type, exc_value, exc_traceback = sys.exc_info() exc_type, exc_value, exc_traceback = sys.exc_info()
print "[openwebrx-httpd] exception happened (outside):", exc_type, exc_value print "[openwebrx-httpd] error (@outside):", exc_type, exc_value
traceback.print_tb(exc_traceback) traceback.print_tb(exc_traceback)
class ClientNotFoundException(Exception): class ClientNotFoundException(Exception):
pass pass

2
plugins/dsp/csdr/plugin.py
View File

@ -13,7 +13,7 @@ class dsp_plugin:
self.offset_freq = 0 self.offset_freq = 0
self.low_cut = -4000 self.low_cut = -4000
self.high_cut = 4000 self.high_cut = 4000
self.bpf_transition_bw = 300 #Hz, and this is a constant self.bpf_transition_bw = 320 #Hz, and this is a constant
self.ddc_transition_bw_rate = 0.15 # of the IF sample rate self.ddc_transition_bw_rate = 0.15 # of the IF sample rate
self.running = False self.running = False
chain_begin="nc localhost 4951 | csdr convert_u8_f | csdr shift_addition_cc --fifo {shift_pipe} | csdr fir_decimate_cc {decimation} {ddc_transition_bw} HAMMING | csdr bandpass_fir_fft_cc --fifo {bpf_pipe} {bpf_transition_bw} HAMMING | " chain_begin="nc localhost 4951 | csdr convert_u8_f | csdr shift_addition_cc --fifo {shift_pipe} | csdr fir_decimate_cc {decimation} {ddc_transition_bw} HAMMING | csdr bandpass_fir_fft_cc --fifo {bpf_pipe} {bpf_transition_bw} HAMMING | "