text: # 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.
  import tvm
  import ctypes
  import numpy as np
  
  def test_static_callback():
      dtype = 'int64'
      n = tvm.size_var('n')
      Ab = tvm.decl_buffer((n, ), dtype)
      i = tvm.size_var('i')
      ib = tvm.ir_builder.create()
      A = ib.buffer_ptr(Ab)
      cp = tvm.thread_axis((0, 1), "cop")
      finit = tvm.make.StringImm("TVMBackendRunOnce")
      ib.scope_attr(cp, "coproc_uop_scope", finit)
      with ib.for_range(0, n, "i", for_type="parallel") as i:
          A[i] = A[i] + 1
      stmt = ib.get()
      fapi = tvm.ir_pass.MakeAPI(stmt, "ramp", [Ab], 0, True)
      fapi = tvm.ir_pass.LowerTVMBuiltin(fapi)
      f = tvm.target.codegen.build_module(fapi, "llvm")
      a = tvm.nd.array(np.zeros(10, dtype=dtype))
      f(a)
      f(a)
      np.testing.assert_equal(a.asnumpy(), np.ones(a.shape[0]))
  
  def test_static_init():
      dtype = 'int64'
      n = tvm.size_var('n')
      Ab = tvm.decl_buffer((n, ), dtype)
      i = tvm.size_var('i')
      ib = tvm.ir_builder.create()
      handle = tvm.call_intrin("handle", "tvm_static_handle")
      ib.emit(
          tvm.call_packed("test_static_callback", handle, Ab))
  
      @tvm.register_func("test_static_callback")
      def test_cb(sh, A):
          assert isinstance(sh, ctypes.c_void_p)
          return sh
  
      stmt = ib.get()
      fapi = tvm.ir_pass.MakeAPI(stmt, "ramp", [Ab], 0, True)
      fapi = tvm.ir_pass.LowerTVMBuiltin(fapi)
      f = tvm.target.codegen.build_module(fapi, "llvm")
      a = tvm.nd.array(np.zeros(10, dtype=dtype))
      f(a)
  
  
  if __name__ == "__main__":
      test_static_callback()
      test_static_init()
  