github.com/rohankumardubey/aresdb@v0.0.2-0.20190517170215-e54e3ca06b9c/memutils/memory.h (about)

     1  //  Copyright (c) 2017-2018 Uber Technologies, Inc.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //     http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  #ifndef MEMUTILS_MEMORY_H_
    16  #define MEMUTILS_MEMORY_H_
    17  
    18  #include <stddef.h>
    19  #include <stdint.h>
    20  #include "../cgoutils/utils.h"
    21  
    22  #ifdef __cplusplus
    23  extern "C" {
    24  #endif
    25  
    26  enum {
    27    DEVICE_MEMORY_IMPLEMENTATION_FLAG = 1,
    28    POOLED_MEMORY_FLAG = 1 << 1
    29  };
    30  
    31  char NOT_SUPPORTED_ERR_MSG[] = "Not supported";
    32  
    33  // device_memory_flags_t & 0x1: HOST(0) or DEVICE(1) implementation
    34  // device_memory_flags_t & 0x2: USE POOLED MEMORY MANAGEMENT OR NOT
    35  typedef uint32_t DeviceMemoryFlags;
    36  
    37  // We don't wrap the result with CGoCallResHandle as we know
    38  // GetFlags is a safe call that will not throw any exceptions.
    39  // Change to CGoCallResHandle when future it will throw any.
    40  DeviceMemoryFlags GetFlags();
    41  
    42  CGoCallResHandle Init();
    43  
    44  CGoCallResHandle HostAlloc(size_t bytes);
    45  
    46  CGoCallResHandle HostFree(void *p);
    47  
    48  CGoCallResHandle CreateCudaStream(int device);
    49  
    50  CGoCallResHandle WaitForCudaStream(void *s, int device);
    51  
    52  CGoCallResHandle DestroyCudaStream(void *s, int device);
    53  
    54  CGoCallResHandle DeviceAllocate(size_t bytes, int device);
    55  
    56  CGoCallResHandle DeviceFree(void *p, int device);
    57  
    58  CGoCallResHandle AsyncCopyHostToDevice(
    59      void *dst, void *src, size_t bytes, void *stream, int device);
    60  
    61  CGoCallResHandle AsyncCopyDeviceToDevice(
    62      void *dst, void *src, size_t bytes, void *stream, int device);
    63  
    64  CGoCallResHandle AsyncCopyDeviceToHost(
    65      void *dst, void *src, size_t bytes, void *stream, int device);
    66  
    67  CGoCallResHandle GetDeviceCount();
    68  
    69  CGoCallResHandle GetDeviceGlobalMemoryInMB(int device);
    70  
    71  CGoCallResHandle CudaProfilerStart();
    72  
    73  CGoCallResHandle CudaProfilerStop();
    74  
    75  CGoCallResHandle GetDeviceMemoryInfo(size_t *freeSize, size_t *totalSize,
    76      int device);
    77  
    78  // All following functions are called by libalgorithm.so only, not intended
    79  // to be exposed to go. Caller need to call cudaSetDevice before invocation.
    80  CGoCallResHandle deviceMalloc(void **devPtr, size_t size);
    81  CGoCallResHandle deviceFree(void *devPtr);
    82  CGoCallResHandle deviceMemset(void *devPtr, int value, size_t count);
    83  CGoCallResHandle asyncCopyHostToDevice(void *dst, const void *src,
    84                                         size_t count, void *stream);
    85  
    86  #ifdef __cplusplus
    87  }
    88  #endif
    89  
    90  #endif  // MEMUTILS_MEMORY_H_