restart rep

Practice/matrix/Makefile

@@ -0,0 +1,9 @@
+LIB = 
+
+default: run
+
+build:
+	gcc func.h func.c main.c -o matrix_app ${LIB}
+
+run: build
+		./matrix_app

Practice/matrix/func.c

@@ -0,0 +1,38 @@
+
+#include "func.h"
+
+void init_matr(int c, short int mat[c][c])
+{
+    for (int i = 0; i < c; i++)
+    {
+        for (int j = 0; j < c; j++)
+        {
+            mat[i][j] = rand() % N;
+        }
+    }
+}
+void out_matr(int c, short int mat[c][c])
+{
+    for (int i = 0; i < c; i++)
+    {
+        for (int j = 0; j < c; j++)
+        {
+            printf("[%d] ", mat[i][j]);
+        }
+        printf("\n");
+    }
+}
+
+void trans(int c, short int mat[c][c])
+{
+    for (int i = 0; i < c; i++)
+    {
+        for (int j = i + 1; j < c; j++)
+        {
+            short c;
+            c = mat[i][j];
+            mat[i][j] = mat[j][i];
+            mat[j][i] = c;
+        }
+    }
+}

Practice/matrix/func.h

@@ -0,0 +1,15 @@
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <string.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <time.h>
+#define N 10
+#define n 100
+
+void init_matr(int c, short int mat[c][c]);
+void out_matr(int c, short int mat[c][c]);
+void trans(int c, short int mat[c][c]);

Practice/matrix/main.c

@@ -0,0 +1,77 @@
+
+#include "func.h"
+
+int main(int argc, char *argv[])
+{
+    int pipefd[n][2], fd_ans;
+    caddr_t addr_ans;
+    pid_t cpid[n];
+    short mat1[n][n], mat2[n][n];
+    fd_ans = open(argv[2], O_RDWR | O_CREAT);
+    srand(time(NULL));
+    init_matr(n, mat1);
+    init_matr(n, mat2);
+    out_matr(n, mat1);
+    trans(n, mat2);
+    printf("\n");
+    out_matr(n, mat2);
+    printf("\n");
+    for (int i = 0; i < n; i++)
+    {
+        if (pipe(pipefd[i]) == -1)
+        {
+            perror("pipe");
+            exit(EXIT_FAILURE);
+        }
+        cpid[i] = fork();
+        if (cpid[i] == -1)
+        {
+            perror("fork");
+            exit(EXIT_FAILURE);
+        }
+
+        if (cpid[i] == 0)
+        {
+            int result[n];
+            close(pipefd[i][0]);
+            for (int j = 0; j < i; j++)
+            {
+                close(pipefd[j][0]);
+                close(pipefd[j][1]);
+            }
+            for (int j = 0; j < n; j++)
+            {
+                int sum = 0;
+                for (int k = 0; k < n; k++)
+                {
+                    sum += mat1[i][k] * mat2[j][k];
+                }
+                result[j] = sum;
+            }
+            write(pipefd[i][1], result, n * sizeof(int));
+            close(pipefd[i][1]);
+            exit(EXIT_SUCCESS);
+        }
+        else
+        {
+            close(pipefd[i][1]);
+        }
+    }
+
+    printf("Resulting mat\n");
+    for (int i = 0; i < n; i++)
+    {
+        waitpid(cpid[i], NULL, WNOHANG);
+        int result[n];
+        read(pipefd[i][0], result, n * sizeof(int));
+        for (int j = 0; j < n; j++)
+        {
+           //printf("[%d] ", result[j]);
+            addr_ans = mmap((caddr_t)0, PROT_READ | PROT_WRITE, MAP_SHARED, fd_dst, 0);
+
+        }
+        printf("\n");
+        close(pipefd[i][0]);
+    }
+    exit(EXIT_SUCCESS);
+}