cuda-samples/Common/helper_multiprocess.h

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2022-01-13 14:05:24 +08:00
/* Copyright (c) 2022, NVIDIA CORPORATION. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of NVIDIA CORPORATION nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef HELPER_MULTIPROCESS_H
#define HELPER_MULTIPROCESS_H
#if defined(WIN32) || defined(_WIN32) || defined(WIN64) || defined(_WIN64)
#ifndef WIN32_LEAN_AND_MEAN
#define WIN32_LEAN_AND_MEAN
#endif
#include <windows.h>
#include <iostream>
#include <stdio.h>
#include <tchar.h>
#include <strsafe.h>
#include <sddl.h>
#include <aclapi.h>
#include <winternl.h>
#else
#include <stdio.h>
#include <fcntl.h>
#include <sys/mman.h>
#include <unistd.h>
#include <errno.h>
#include <sys/wait.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <memory.h>
#include <sys/un.h>
#endif
#include <vector>
typedef struct sharedMemoryInfo_st {
void *addr;
size_t size;
#if defined(WIN32) || defined(_WIN32) || defined(WIN64) || defined(_WIN64)
HANDLE shmHandle;
#else
int shmFd;
#endif
} sharedMemoryInfo;
int sharedMemoryCreate(const char *name, size_t sz, sharedMemoryInfo *info);
int sharedMemoryOpen(const char *name, size_t sz, sharedMemoryInfo *info);
void sharedMemoryClose(sharedMemoryInfo *info);
#if defined(WIN32) || defined(_WIN32) || defined(WIN64) || defined(_WIN64)
typedef PROCESS_INFORMATION Process;
#else
typedef pid_t Process;
#endif
int spawnProcess(Process *process, const char *app, char * const *args);
int waitProcess(Process *process);
#define checkIpcErrors(ipcFuncResult) \
if (ipcFuncResult == -1) { fprintf(stderr, "Failure at %u %s\n", __LINE__, __FILE__); exit(EXIT_FAILURE); }
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#if defined(__linux__) || defined(__QNX__)
struct ipcHandle_st {
int socket;
char *socketName;
};
typedef int ShareableHandle;
#elif defined(WIN32) || defined(_WIN32) || defined(WIN64) || defined(_WIN64)
struct ipcHandle_st {
std::vector<HANDLE> hMailslot; // 1 Handle in case of child and `num children` Handles for parent.
};
typedef HANDLE ShareableHandle;
#endif
typedef struct ipcHandle_st ipcHandle;
int
ipcCreateSocket(ipcHandle *&handle, const char *name, const std::vector<Process>& processes);
int
ipcOpenSocket(ipcHandle *&handle);
int
ipcCloseSocket(ipcHandle *handle);
int
ipcRecvShareableHandles(ipcHandle *handle, std::vector<ShareableHandle>& shareableHandles);
int
ipcSendShareableHandles(ipcHandle *handle, const std::vector<ShareableHandle>& shareableHandles, const std::vector<Process>& processes);
int
ipcCloseShareableHandle(ShareableHandle shHandle);
#endif // HELPER_MULTIPROCESS_H