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improve lock handling

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This commit is contained in:
Jakob Ketterl
2020-02-27 19:48:22 +01:00
parent c325368be8
commit d36be799d0
1 changed files with 92 additions and 99 deletions
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37
csdr/csdr.py
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@@ -111,7 +111,11 @@ class dsp(object):
self.unvoiced_quality = 1
self.modification_lock = threading.Lock()
self.output = output
self.temporary_directory = "/tmp"
self.temporary_directory = None
self.pipe_base_path = None
self.set_temporary_directory("/tmp")
self.is_service = False
self.direwolf_config = None
self.direwolf_port = None
@@ -122,6 +126,7 @@ class dsp(object):
def set_temporary_directory(self, what):
self.temporary_directory = what
self.pipe_base_path = "{tmp_dir}/openwebrx_pipe_{myid}_".format(tmp_dir=self.temporary_directory, myid=id(self))
def chain(self, which):
chain = ["nc -v 127.0.0.1 {nc_port}"]
@@ -528,21 +533,19 @@ class dsp(object):
def set_offset_freq(self, offset_freq):
self.offset_freq = offset_freq
if self.running:
self.modification_lock.acquire()
with self.modification_lock:
self.pipe_files["shift_pipe"].write("%g\n" % (-float(self.offset_freq) / self.samp_rate))
self.pipe_files["shift_pipe"].flush()
self.modification_lock.release()
def set_bpf(self, low_cut, high_cut):
self.low_cut = low_cut
self.high_cut = high_cut
if self.running:
self.modification_lock.acquire()
with self.modification_lock:
self.pipe_files["bpf_pipe"].write(
"%g %g\n" % (float(self.low_cut) / self.if_samp_rate(), float(self.high_cut) / self.if_samp_rate())
)
self.pipe_files["bpf_pipe"].flush()
self.modification_lock.release()
def get_bpf(self):
return [self.low_cut, self.high_cut]
@@ -555,10 +558,9 @@ class dsp(object):
# no squelch required on digital voice modes
actual_squelch = -150 if self.isDigitalVoice() or self.isPacket() or self.isPocsag() else self.squelch_level
if self.running:
self.modification_lock.acquire()
with self.modification_lock:
self.pipe_files["squelch_pipe"].write("%g\n" % (self.convertToLinear(actual_squelch)))
self.pipe_files["squelch_pipe"].flush()
self.modification_lock.release()
def set_unvoiced_quality(self, q):
self.unvoiced_quality = q
@@ -633,17 +635,14 @@ class dsp(object):
self.direwolf_config = None
def start(self):
self.modification_lock.acquire()
with self.modification_lock:
if self.running:
self.modification_lock.release()
return
self.running = True
command_base = " | ".join(self.chain(self.demodulator))
# create control pipes for csdr
self.pipe_base_path = "{tmp_dir}/openwebrx_pipe_{myid}_".format(tmp_dir=self.temporary_directory, myid=id(self))
self.try_create_pipes(self.pipe_names, command_base)
# run the command
@@ -700,13 +699,12 @@ class dsp(object):
),
)
# open control pipes for csdr
for p in ["bpf_pipe", "shift_pipe", "squelch_pipe"]:
if self.has_pipe(p):
self.pipe_files[p] = open(self.pipes[p], "w")
self.start_secondary_demodulator()
self.modification_lock.release()
# open control pipes for csdr
for p in ["bpf_pipe", "shift_pipe", "squelch_pipe", "dmr_control_pipe"]:
if self.has_pipe(p):
self.pipe_files[p] = open(self.pipes[p], "w")
# send initial config through the pipes
if self.has_pipe("squelch_pipe"):
@@ -739,11 +737,8 @@ class dsp(object):
self.output.send_output("meta", read_meta)
if self.has_pipe("dmr_control_pipe"):
self.pipe_files["dmr_control_pipe"] = open(self.pipes["dmr_control_pipe"], "w")
def stop(self):
self.modification_lock.acquire()
with self.modification_lock:
self.running = False
if self.process is not None:
try:
@@ -756,8 +751,6 @@ class dsp(object):
self.try_delete_pipes(self.pipe_names)
self.modification_lock.release()
def restart(self):
if not self.running:
return