c_backend_api.h

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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.
 */

#ifndef TVM_RUNTIME_C_BACKEND_API_H_
#define TVM_RUNTIME_C_BACKEND_API_H_

#include "c_runtime_api.h"

#ifdef __cplusplus
extern "C" {
#endif

// Backend related functions.
TVM_DLL int TVMBackendGetFuncFromEnv(void* mod_node,
                                     const char* func_name,
                                     TVMFunctionHandle *out);
TVM_DLL int TVMBackendRegisterSystemLibSymbol(const char* name, void* ptr);

TVM_DLL void* TVMBackendAllocWorkspace(int device_type,
                                       int device_id,
                                       uint64_t nbytes,
                                       int dtype_code_hint,
                                       int dtype_bits_hint);

TVM_DLL int TVMBackendFreeWorkspace(int device_type,
                                    int device_id,
                                    void* ptr);

typedef struct {
  void* sync_handle;
  int32_t num_task;
} TVMParallelGroupEnv;

typedef int (*FTVMParallelLambda)(
    int task_id, TVMParallelGroupEnv* penv, void* cdata);

TVM_DLL int TVMBackendParallelLaunch(FTVMParallelLambda flambda,
                                     void* cdata,
                                     int num_task);

TVM_DLL int TVMBackendParallelBarrier(int task_id, TVMParallelGroupEnv* penv);


TVM_DLL int TVMBackendRunOnce(void** handle,
                              int (*f)(void*),
                              void *cdata,
                              int nbytes);

#ifdef __cplusplus
}  // TVM_EXTERN_C
#endif
#endif  // TVM_RUNTIME_C_BACKEND_API_H_