python 和C通过共享内存通信
C 接收数据
#include <stdio.h>
#include <stdlib.h>
#include <sys/shm.h>
#include <string.h>
#include <time.h>
#include <sys/time.h>#define SHAERD_MEM_SIZE 20 * 1024 * 1024 // 20MBytes
#define ImgWidth 1024
#define ImgHeight 1024time_t get_timestamp_ms(void);int main(int argc, char *argv[])
{int i,j;int id = 0;size_t offset = 0;char *data = NULL;unsigned char *ImgData = NULL;unsigned char *TmpPointer = NULL;unsigned int file_bytes = 0;time_t start_time, end_time;unsigned char ImgDataMatrix[ImgWidth][ImgHeight] = {0};if (argc < 2){printf("args too less\n");return 0;}id = shmget(123559, SHAERD_MEM_SIZE, IPC_CREAT | 0777);if (id < 0){printf("get id failed\n");return 0;}data = shmat(id, NULL, 0);if (data ==