chore: import upstream snapshot with attribution

python/tvm/s_tir/meta_schedule/profiler.py

@@ -0,0 +1,74 @@
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+# pylint: disable=used-before-assignment
+"""A context manager that profiles tuning time cost for different parts."""
+
+from contextlib import contextmanager
+from typing import Optional
+
+from tvm_ffi import register_object
+
+from tvm.runtime import Object
+
+from . import _ffi_api
+
+
+@register_object("s_tir.meta_schedule.Profiler")
+class Profiler(Object):
+    """Tuning time profiler."""
+
+    def __init__(self) -> None:
+        self.__init_handle_by_constructor__(
+            _ffi_api.Profiler,  # type: ignore # pylint: disable=no-member
+        )
+
+    def get(self) -> dict[str, float]:
+        """Get the profiling results in seconds"""
+        return _ffi_api.ProfilerGet(self)  # type: ignore # pylint: disable=no-member
+
+    def table(self) -> str:
+        """Get the profiling results in a table format"""
+        return _ffi_api.ProfilerTable(self)  # type: ignore # pylint: disable=no-member
+
+    def __enter__(self) -> "Profiler":
+        """Entering the scope of the context manager"""
+        _ffi_api.ProfilerEnterWithScope(self)  # type: ignore # pylint: disable=no-member
+        return self
+
+    def __exit__(self, ptype, value, trace) -> None:
+        """Exiting the scope of the context manager"""
+        _ffi_api.ProfilerExitWithScope(self)  # type: ignore # pylint: disable=no-member
+
+    @staticmethod
+    def current() -> Optional["Profiler"]:
+        """Get the current profiler."""
+        return _ffi_api.ProfilerCurrent()  # type: ignore # pylint: disable=no-member
+
+    @staticmethod
+    def timeit(name: str):
+        """Timeit a block of code"""
+
+        @contextmanager
+        def _timeit():
+            try:
+                f = _ffi_api.ProfilerTimedScope(name)  # type: ignore # pylint: disable=no-member
+                yield
+            finally:
+                if f:
+                    f()
+
+        return _timeit()