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|
# Start of server.py
import sys
import time
import shlex # For string splitting
class Server:
def __init__(self, ctx):
self._ctx = ctx
self._vars = {}
class Failure(BaseException):
def __init__(self, msg):
self.msg = msg
def _get_arg(self, args, i):
if i < len(args):
return args[i]
else:
raise self.Failure("Insufficient command args")
def _get_entry_point(self, entry):
if entry in self._ctx.entry_points:
return self._ctx.entry_points[entry]
else:
raise self.Failure("Unknown entry point: %s" % entry)
def _check_var(self, vname):
if not vname in self._vars:
raise self.Failure("Unknown variable: %s" % vname)
def _check_new_var(self, vname):
if vname in self._vars:
raise self.Failure("Variable already exists: %s" % vname)
def _get_var(self, vname):
self._check_var(vname)
return self._vars[vname]
def _cmd_inputs(self, args):
entry = self._get_arg(args, 0)
for t in self._get_entry_point(entry)[1]:
print(t)
def _cmd_outputs(self, args):
entry = self._get_arg(args, 0)
for t in self._get_entry_point(entry)[2]:
print(t)
def _cmd_dummy(self, args):
pass
def _cmd_free(self, args):
for vname in args:
self._check_var(vname)
del self._vars[vname]
def _cmd_rename(self, args):
oldname = self._get_arg(args, 0)
newname = self._get_arg(args, 1)
self._check_var(oldname)
self._check_new_var(newname)
self._vars[newname] = self._vars[oldname]
del self._vars[oldname]
def _cmd_call(self, args):
entry = self._get_entry_point(self._get_arg(args, 0))
entry_fname = entry[0]
num_ins = len(entry[1])
num_outs = len(entry[2])
exp_len = 1 + num_outs + num_ins
if len(args) != exp_len:
raise self.Failure("Invalid argument count, expected %d" % exp_len)
out_vnames = args[1 : num_outs + 1]
for out_vname in out_vnames:
self._check_new_var(out_vname)
in_vnames = args[1 + num_outs :]
ins = [self._get_var(in_vname) for in_vname in in_vnames]
try:
(runtime, vals) = getattr(self._ctx, entry_fname)(*ins)
except Exception as e:
raise self.Failure(str(e))
print("runtime: %d" % runtime)
if num_outs == 1:
self._vars[out_vnames[0]] = vals
else:
for out_vname, val in zip(out_vnames, vals):
self._vars[out_vname] = val
def _store_val(self, f, value):
# In case we are using the PyOpenCL backend, we first
# need to convert OpenCL arrays to ordinary NumPy
# arrays. We do this in a nasty way.
if isinstance(value, opaque):
for component in value.data:
self._store_val(f, component)
elif (
isinstance(value, np.number)
or isinstance(value, bool)
or isinstance(value, np.bool_)
or isinstance(value, np.ndarray)
):
# Ordinary NumPy value.
f.write(construct_binary_value(value))
else:
# Assuming PyOpenCL array.
f.write(construct_binary_value(value.get()))
def _cmd_store(self, args):
fname = self._get_arg(args, 0)
with open(fname, "wb") as f:
for i in range(1, len(args)):
self._store_val(f, self._get_var(args[i]))
def _restore_val(self, reader, typename):
if typename in self._ctx.opaques:
vs = []
for t in self._ctx.opaques[typename]:
vs += [read_value(t, reader)]
return opaque(typename, *vs)
else:
return read_value(typename, reader)
def _cmd_restore(self, args):
if len(args) % 2 == 0:
raise self.Failure("Invalid argument count")
fname = args[0]
args = args[1:]
with open(fname, "rb") as f:
reader = ReaderInput(f)
while args != []:
vname = args[0]
typename = args[1]
args = args[2:]
if vname in self._vars:
raise self.Failure("Variable already exists: %s" % vname)
try:
self._vars[vname] = self._restore_val(reader, typename)
except ValueError:
raise self.Failure(
"Failed to restore variable %s.\n"
"Possibly malformed data in %s.\n" % (vname, fname)
)
skip_spaces(reader)
if reader.get_char() != b"":
raise self.Failure("Expected EOF after reading values")
def _cmd_types(self, args):
for k in self._ctx.opaques.keys():
print(k)
def _cmd_entry_points(self, args):
for k in self._ctx.entry_points.keys():
print(k)
_commands = {
"inputs": _cmd_inputs,
"outputs": _cmd_outputs,
"call": _cmd_call,
"restore": _cmd_restore,
"store": _cmd_store,
"free": _cmd_free,
"rename": _cmd_rename,
"clear": _cmd_dummy,
"pause_profiling": _cmd_dummy,
"unpause_profiling": _cmd_dummy,
"report": _cmd_dummy,
"types": _cmd_types,
"entry_points": _cmd_entry_points,
}
def _process_line(self, line):
lex = shlex.shlex(line)
lex.quotes = '"'
lex.whitespace_split = True
lex.commenters = ""
words = list(lex)
if words == []:
raise self.Failure("Empty line")
else:
cmd = words[0]
args = words[1:]
if cmd in self._commands:
self._commands[cmd](self, args)
else:
raise self.Failure("Unknown command: %s" % cmd)
def run(self):
while True:
print("%%% OK", flush=True)
line = sys.stdin.readline()
if line == "":
return
try:
self._process_line(line)
except self.Failure as e:
print("%%% FAILURE")
print(e.msg)
# End of server.py
|
