include iostream include stdlib include stdio include pthread include

#include <iostream>
#include <stdlib.h>
#include <stdio.h>
#include <pthread.h>
#include <unistd.h>
#include <time.h>
#include <math.h>
using namespace std;
pthread_mutex_t mutex;
int **mas;
int *vect;
int *result;
struct BlockData
{
    int st_n;
    int _end_n;
    int st_m;
    int _end_m;
};
void *blockMult(int stn, int _endn, int stm, int _endm)
{
    for (int i = stn; i < _endn; i++)
    {
        for(int j = stm; j < _endm; j++)
        {
            pthread_mutex_lock(&mutex);
            result[i] += mas[i][j] * vect[j];
            //cout << result[i] << " ";
            pthread_mutex_unlock(&mutex);
        }
    }
}
void *rowFunc(void *lpParam)
{
    //struct Data dt = *((struct Data *)lpParam);
    struct BlockData dt = *((struct BlockData *)lpParam);
    blockMult(dt.st_n, dt._end_n, dt.st_m, dt._end_m);
}
int main()
{
    setlocale(LC_ALL, "Russian");
    pthread_mutex_init(&mutex, NULL);
    const int p = 1;
    const int n = 2, m = 4;
    mas = new int*[n];
    pthread_t *th = new pthread_t[p];
    for (int i = 0; i < n; i++)
        mas[i] = new int[m];
    cout << "Матрица: " << endl;
    srand(time(NULL));
    result = new int[n];
    for (int i = 0; i < n; i++)
    {
        for (int j = 0; j < m; j++)
        {
            mas[i][j] = rand()%3;
            cout << mas[i][j] << " ";
        }
        cout << endl;
        result[i] = 0;
    }
    cout << endl;
    cout << "Вектор: " << endl;
    vect = new int[m];
    srand(time(NULL));
    for (int j = 0; j < m; j++)
        {
            vect[j] = rand()%3;
            cout << vect[j] << " ";
        }
    cout << endl;
    BlockData *dt = new BlockData[p];
    for (int i = 0; i < p; i++)
    {
        for (int j = 0; j < p; j++)
        {
            dt[j].st_n = i * round(n/p);
            dt[j]._end_n = (i == (p - 1)) ? (i * round(n/p) + round(n/p) + n % p) : (i * round(n/p) + round(n/p));
            dt[j].st_m = j * round(m/p);
            dt[j]._end_m = (j == (p - 1)) ? (j * round(m/p) + round(m/p) + m % p) : (j * round(m/p) + round(m/p));
            cout << "dt[i].st_n = " << dt[j].st_n << "  dt[i]._end_n = "
            << dt[j]._end_n << " dt[i].st_m = " << dt[j].st_m << " dt[i]._end_m = " << dt[j]._end_m << endl;
            pthread_create(&th[j], NULL, rowFunc, &dt[j]);
        }
    }
    cout << "Результат: ";
    for (int i = 0; i < p; i++)
    {
        pthread_join(th[i], NULL);
    }
    for (int i = 0; i < n; i++)
    {
        cout << result[i] << " ";
    }
    cout << endl;
    for (int i = 0; i < n; i++)
        delete[] mas[i];
    delete []mas;
    delete []dt;
    delete []result;
    delete []vect;
    delete []th;
    return 0;
}