如何将带有矩阵的结构作为pthread参数传递？

#include <stdio.h>
#include <stdlib.h>
#include <pthread.h>

#define NUM_THREADS 4
#define MATRIX_SIZE 3

// 定义矩阵结构
typedef struct {
    int matrix[MATRIX_SIZE][MATRIX_SIZE];
    int row;
    int col;
} MatrixData;

// 线程函数
void* threadFunc(void* arg) {
    MatrixData* data = (MatrixData*)arg;
    int row = data->row;
    int col = data->col;
    int sum = 0;

    // 计算矩阵指定位置的和
    for (int i = 0; i < MATRIX_SIZE; i++) {
        sum += data->matrix[row][i] * data->matrix[i][col];
    }

    printf("Sum at position (%d, %d): %d\n", row, col, sum);

    pthread_exit(NULL);
}

int main() {
    pthread_t threads[NUM_THREADS];
    MatrixData matrixData[NUM_THREADS];

    // 初始化矩阵数据
    int matrix[MATRIX_SIZE][MATRIX_SIZE] = {
        {1, 2, 3},
        {4, 5, 6},
        {7, 8, 9}
    };

    // 创建线程并传递矩阵数据
    for (int i = 0; i < NUM_THREADS; i++) {
        matrixData[i].row = i / MATRIX_SIZE;
        matrixData[i].col = i % MATRIX_SIZE;
        for (int j = 0; j < MATRIX_SIZE; j++) {
            for (int k = 0; k < MATRIX_SIZE; k++) {
                matrixData[i].matrix[j][k] = matrix[j][k];
            }
        }
        pthread_create(&threads[i], NULL, threadFunc, (void*)&matrixData[i]);
    }

    // 等待线程结束
    for (int i = 0; i < NUM_THREADS; i++) {
        pthread_join(threads[i], NULL);
    }

    return 0;
}