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import dataclasses
import os
import traceback
from torchdynamo.utils import counters
class InternalTorchDynamoError(RuntimeError):
pass
class RestartAnalysis(RuntimeError):
pass
class SkipFrame(RuntimeError):
pass
class TorchRuntimeError(RuntimeError):
pass
@dataclasses.dataclass
class FakeTensorError(RuntimeError):
reason: str
class BackendCompilerFailed(RuntimeError):
def __init__(self, backend_fn, inner_exception):
self.backend_name = getattr(backend_fn, "__name__", "?")
self.inner_exception = inner_exception
super().__init__(
f"{self.backend_name} raised {type(inner_exception).__name__}: {inner_exception}"
"\n\n"
"You can suppress this exception and fall back to eager by setting:\n"
" torchdynamo.config.raise_on_backend_error = False"
)
class Unsupported(RuntimeError):
def __init__(self, msg):
super(Unsupported, self).__init__(msg)
self.real_stack = []
self.msg = msg
self.category = None
self.add_to_stats()
def __str__(self):
msgs = [super(Unsupported, self).__str__()]
if self.real_stack:
msgs.append("\nProcessing original code:\n")
msgs.extend(
reversed(traceback.StackSummary.from_list(self.real_stack).format())
)
return "".join(msgs)
def remove_from_stats(self):
counters[self.category][self.msg] -= 1
if counters[self.category][self.msg] <= 0:
del counters[self.category][self.msg]
def add_to_stats(self, category="unimplemented"):
self.category = category
counters[category][self.msg] += 1
def unimplemented(msg: str):
assert msg != os.environ.get("BREAK", False)
raise Unsupported(msg)
def warning(msg: str):
counters["warnings"][msg] += 1
assert msg != os.environ.get("BREAK", False)
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