nnpack_utils.cc 1.95 KB
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/*
 * 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.
 */

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/*!
 *  Copyright (c) 2017 by Contributors
 * \file Use external nnpack library call.
 */
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#include "nnpack_utils.h"
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namespace tvm {
namespace contrib {
using namespace runtime;

typedef dmlc::ThreadLocalStore<NNPackThreadLocalEntry> NNPackThreadLocalStore;

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NNPackThreadLocalEntry* NNPackThreadLocalEntry::ThreadLocal() {
  return NNPackThreadLocalStore::Get();
}

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bool NNPackConfig(uint64_t nthreads) {
  NNPackThreadLocalEntry *entry = NNPackThreadLocalEntry::ThreadLocal();
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  if (entry->threadpool && pthreadpool_get_threads_count(entry->threadpool) == nthreads) {
    CHECK_NE(nthreads, 1);
    return true;
  }
  if (entry->threadpool) {
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    pthreadpool_destroy(entry->threadpool);
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    entry->threadpool = nullptr;
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  }
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  if (nthreads == 1) {
    // a null threadpool means the function is invoked on the calling thread,
    // which is the desired logic for nthreads == 1
    CHECK(!entry->threadpool);
    return true;
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  }
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  entry->threadpool = pthreadpool_create(nthreads);
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  return true;
}


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TVM_REGISTER_GLOBAL("contrib.nnpack._initialize")
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.set_body([](TVMArgs args, TVMRetValue *ret) {
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    *ret = nnp_initialize();
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  });
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}  // namespace contrib
}  // namespace tvm