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ada-dmitry
2023-09-29 15:18:13 +03:00
parent 6809e2ef5f
commit 04ba81cfb3
18 changed files with 866 additions and 0 deletions
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TMP/Practice/29.09/code.c
+147
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#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>
#include <signal.h>
#include <poll.h>
#define NUM 4
#define errExit(msg) do { perror(msg); _exit(EXIT_FAILURE); } while (0)
#define errExit1(msg) { perror(msg); _exit(EXIT_FAILURE); }
void child_handler(int sig) {
pid_t pid;
while((pid = waitpid(-1, NULL, WNOHANG)) > 0);
}
void int_handler(int sig){
printf("Ctrl-C pressed, do nothing...\n");
}
int main(int argc, char *argv[]) {
struct sigaction new_act, old_act;
sigemptyset (&new_act.sa_mask);
new_act.sa_flags = 0;
new_act.sa_flags = SA_RESTART;
new_act.sa_handler = child_handler;
sigaction (SIGCHLD, &new_act, &old_act);
struct sigaction nint_act, oint_act;
sigemptyset (&nint_act.sa_mask);
nint_act.sa_flags = 0;
nint_act.sa_flags = SA_RESTART;
nint_act.sa_handler = int_handler;
sigaction (SIGINT, &nint_act, &oint_act);
int pipefd[NUM][2];
pid_t cpid[NUM];
int nfds, num_open_fds;
struct pollfd *pfds;
int ready;
unsigned char i,tt;
char buf;
int rr;
if (argc != 2) {
fprintf(stderr, "Usage: %s <string>\n", argv[0]);
_exit(EXIT_FAILURE);
}
srand(time(NULL));
num_open_fds = nfds = NUM;
pfds = calloc(nfds, sizeof(struct pollfd));
if (pfds == NULL) errExit("malloc");
for (i=0;i<NUM;i++){
tt=(unsigned char)rand()%9;
dprintf(STDOUT_FILENO,"child %d life time is %X\n",i,tt);
if (pipe(pipefd[i]) == -1) errExit("pipe");
pfds[i].fd = pipefd[i][0];
pfds[i].events = POLLIN;
if ((cpid[i] = fork()) == -1) errExit("fork");
if (cpid[i] == 0) {
close(pipefd[i][0]);
for (int j=0; j<i; j++){
close(pipefd[j][0]);
close(pipefd[j][1]);
}
write(pipefd[i][1], argv[1], strlen(argv[1]));
write(pipefd[i][1], &i, 1);
write(pipefd[i][1], &tt, 1);
sleep(tt);
close(pipefd[i][1]);
_exit(EXIT_SUCCESS);
}
}
for (int j=0; j<i; j++) close(pipefd[j][1]);
dprintf(STDOUT_FILENO,"Opened %d pipes, waiting...\n",num_open_fds);
while (num_open_fds > 0) {
do{
dprintf(STDOUT_FILENO,"\ntry poll:\n");
for (i = 0; i < NUM; i++) pfds[i].revents=0;
ready = poll(pfds, nfds, -1);
if(ready == -1)
switch (errno) {
case EINTR: dprintf(STDOUT_FILENO,"\nPoll interrupted, repeat.\n");
continue;
default: errExit("poll");
}
} while (ready <= 0);
for (i = 0; i < NUM; i++) {
if (pfds[i].revents != 0) {
dprintf(STDOUT_FILENO," fd=%d; events: %7s%8s%9s%8s%8s ", pfds[i].fd,
(pfds[i].revents & POLLIN) ? "POLLIN " : "",
(pfds[i].revents & POLLHUP) ? "POLLHUP " : "",
(pfds[i].revents & POLLNVAL) ? "POLLNVAL " : "",
(pfds[i].revents & POLLPRI) ? "POLLPRI " : "",
(pfds[i].revents & POLLERR) ? "POLLERR " : "");
if (pfds[i].revents & POLLIN) {
do {
rr=read(pfds[i].fd, &buf, 1);
if (rr < 0)
switch (errno) {
case EINTR: dprintf(STDOUT_FILENO,"\nRead interrupted, repeat.\n");
continue;
default: errExit("read");
}
if(rr == 0 )
dprintf(STDOUT_FILENO,"\n");
else
dprintf(STDOUT_FILENO,"[%2X]",buf);
} while (rr > 0);
}
else
if ((pfds[i].revents & (POLLHUP | ~POLLIN))) {
dprintf(STDOUT_FILENO,"Closing [%d], pipefd %d, pfds.fd %d\n",i,pipefd[i][0],pfds[i].fd);
if (close(pfds[i].fd) < 0 ) errExit("close pfds");
pfds[i].fd = -1;
pfds[i].events=0;
num_open_fds--;
dprintf(STDOUT_FILENO,"Still opened fds %d\n",num_open_fds);
}
}
}
}
printf("Niggers");
while (1) pause;
return EXIT_SUCCESS;
}
TMP/Practice/matrix/Makefile
+9
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LIB =
default: run
build:
gcc func.h func.c main.c -o matrix_app ${LIB}
run: build
./matrix_app
TMP/Practice/matrix/func.c
+38
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#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;
}
}
}
TMP/Practice/matrix/func.h
+15
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#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]);
TMP/Practice/matrix/main.c
+77
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#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);
}
TMP/Practice/matrix/matrix_app
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TMP/Practice/trash/app
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TMP/Practice/trash/app_poll
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TMP/Practice/trash/app_poll2
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TMP/Practice/trash/child.c
+86
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#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <unistd.h>
#include <string.h>
#include <fcntl.h>
#include <errno.h>
#include <time.h>
#define DATA 20
#define NUM 4
struct Data {
char s[DATA + 1];
pid_t cpid;
unsigned char i, t;
};
int main(int argc, char *argv[]){
int pipefd[4][2];
pid_t cpid[4];
unsigned char i, tt;
int rr, wt;
if (argc != 2){
fprintf(stderr, "Usage: %s <string>\n", argv[0]);
exit(EXIT_FAILURE);
}
srand(time(NULL));
for(i = 0; i < NUM; i++){
if (pipe(pipefd[i]) == -1){
perror("Pipe");
exit(EXIT_FAILURE);
}
tt = (unsigned char)rand()%8;
dprintf(STDOUT_FILENO, "Time[%X]\n", tt);
cpid[i] = fork();
if (cpid[i] == -1){
perror("Fork");
exit(EXIT_FAILURE);
}
if (cpid[i] == 0){
struct Data data;
close(pipefd[i][0]);
for(int j = 0; j < i; j++){
close(pipefd[j][0]);
close(pipefd[j][1]);
}
data.cpid = getpid();
data.i = i;
data.t = tt;
strncpy(data.s, argv[1], DATA);
write(pipefd[i][1], &data, sizeof(struct Data));
close(pipefd[i][1]);
sleep(tt);
_exit(EXIT_FAILURE);
} else {
dprintf(STDOUT_FILENO, "Start [%d]\n", cpid[i]);
close(pipefd[i][1]);
}
}
printf("Waiting...\n");
while((wt = waitpid(-1, NULL, WNOHANG)) > -1){
if (wt > 0) for(i = 0; i < NUM; i++){
if (cpid[i] == wt){
struct Data data;
while((rr = read(pipefd[i][0], &data, sizeof(struct Data))) > 0){
dprintf(STDOUT_FILENO, "[%d] num = %d, time = %d [%s]\n", data.cpid, data.i, data.t, data.s);
}
if (rr == 0) close(pipefd[i][0]);
}
}
usleep(3000000);
}
if (errno == ECHILD)
perror("Finish:");
else
perror("Wait error:");
exit(EXIT_SUCCESS);
}
TMP/Practice/trash/done
+2
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@@ -0,0 +1,2 @@
be be be be
aaaaaaaaaaa
TMP/Practice/trash/lect.c
+24
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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/mman.h>
#include <unistd.h>
#include <fcntl.h>
int main(int argc, char *argv[]){
int fd_src, fd_dst;
caddr_t addr_src, addr_dst;
struct stat filestat;
fd_src = open(argv[1], O_RDONLY);
fd_dst = open(argv[2], O_RDWR | O_CREAT);
fstat(fd_src, &filestat);
lseek(fd_dst, filestat.st_size - 1, SEEK_SET);
write(fd_dst, "", 1);
addr_src = mmap((caddr_t)0, filestat.st_size, PROT_READ, MAP_SHARED, fd_src, 0);
addr_dst = mmap((caddr_t)0, filestat.st_size, PROT_READ | PROT_WRITE, MAP_SHARED, fd_dst, 0);
memcpy(addr_dst, addr_src, filestat.st_size);
exit(0);
}
TMP/Practice/trash/pin.c
+74
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#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <unistd.h>
#include <string.h>
#include <fcntl.h>
#include <errno.h>
#include <time.h>
#define NUM 4
int main(int argc, char *argv[]){
int pipefd[4][2];
pid_t cpid[4];
unsigned char i, tt;
char buf;
int rr, wt;
if (argc != 2){
fprintf(stderr, "Usage: %s <string>\n", argv[0]);
exit(EXIT_FAILURE);
}
srand(time(NULL));
for(i = 0; i < NUM; i++){
if (pipe(pipefd[i]) == -1){
perror("Pipe");
exit(EXIT_FAILURE);
}
tt = (unsigned char)rand()%8;
dprintf(STDOUT_FILENO, "Time[%X]\n", tt);
cpid[i] = fork();
if (cpid[i] == -1){
perror("Fork");
exit(EXIT_FAILURE);
}
if (cpid[i] == 0){
close(pipefd[i][0]);
write(pipefd[i][1], argv[1], strlen(argv[1]));
write(pipefd[i][1], &i, 1);
write(pipefd[i][1], &tt, 1);
close(pipefd[i][1]);
sleep(tt);
_exit(EXIT_FAILURE);
} else {
close(pipefd[i][1]);
}
}
printf("Waiting...\n");
while((wt = waitpid(-1, NULL, WNOHANG)) > -1){
if (wt > 0) for(i = 0; i < NUM; i++){
if (cpid[i] == wt){
while((rr = read(pipefd[i][0], &buf, 1)) > 0){
write(STDOUT_FILENO, &buf, 1);
dprintf(STDOUT_FILENO, "[%X]", buf);
}
if (rr == 0){
write(STDOUT_FILENO, "\n", 1);
close(pipefd[i][0]);
}
}
}
}
if (errno == ECHILD)
perror("Finish:");
else
perror("Wait error:");
exit(EXIT_SUCCESS);
}
TMP/Practice/trash/poll.c
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#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>
#include <signal.h>
#include <poll.h>
#define NUM 4
#define errExit(msg) do { perror(msg); _exit(EXIT_FAILURE); } while (0)
#define errExit1(msg) { perror(msg); _exit(EXIT_FAILURE); }
void child_handler(int sig) {
pid_t pid;
while((pid = waitpid(-1, NULL, WNOHANG)) > 0);
}
int main(int argc, char *argv[]) {
struct sigaction new_act, old_act;
sigemptyset (&new_act.sa_mask);
new_act.sa_flags = 0;
new_act.sa_handler = child_handler;
sigaction (SIGCHLD, &new_act, &old_act);
int pipefd[NUM][2];
pid_t cpid[NUM];
int nfds, num_open_fds;
struct pollfd *pfds;
int ready;
unsigned char i,tt;
char buf;
int rr;
if (argc != 2) {
fprintf(stderr, "Usage: %s <string>\n", argv[0]);
_exit(EXIT_FAILURE);
}
srand(time(NULL));
num_open_fds = nfds = NUM;
pfds = calloc(nfds, sizeof(struct pollfd));
if (pfds == NULL) errExit("malloc");
for (i=0;i<NUM;i++){
tt=(unsigned char)rand()%9;
dprintf(STDOUT_FILENO,"child %d life time is %X\n",i,tt);
if (pipe(pipefd[i]) == -1) errExit("pipe");
pfds[i].fd = pipefd[i][0];
pfds[i].events = POLLIN;
if ((cpid[i] = fork()) == -1) errExit("fork");
if (cpid[i] == 0) {
close(pipefd[i][0]);
for (int j=0; j<i; j++){
close(pipefd[j][0]);
close(pipefd[j][1]);
}
write(pipefd[i][1], argv[1], strlen(argv[1]));
write(pipefd[i][1], &i, 1);
write(pipefd[i][1], &tt, 1);
sleep(tt);
close(pipefd[i][1]);
_exit(EXIT_SUCCESS);
}
}
for (int j=0; j<i; j++) close(pipefd[j][1]);
dprintf(STDOUT_FILENO,"Opened %d pipes, waiting...\n",num_open_fds);
while (num_open_fds > 0) {
do{
dprintf(STDOUT_FILENO,"\ntry poll:\n");
for (i = 0; i < NUM; i++) pfds[i].revents=0;
ready = poll(pfds, nfds, -1);
if(ready == -1)
switch (errno) {
case EINTR: dprintf(STDOUT_FILENO,"\nPoll interrupted, repeat.\n");
continue;
default: errExit("poll");
}
} while (ready <= 0);
for (i = 0; i < NUM; i++) {
if (pfds[i].revents != 0) {
dprintf(STDOUT_FILENO," fd=%d; events: %7s%8s%9s%8s%8s ", pfds[i].fd,
(pfds[i].revents & POLLIN) ? "POLLIN " : "",
(pfds[i].revents & POLLHUP) ? "POLLHUP " : "",
(pfds[i].revents & POLLNVAL) ? "POLLNVAL " : "",
(pfds[i].revents & POLLPRI) ? "POLLPRI " : "",
(pfds[i].revents & POLLERR) ? "POLLERR " : "");
if (pfds[i].revents & POLLIN) {
do {
rr=read(pfds[i].fd, &buf, 1);
if (rr < 0)
switch (errno) {
case EINTR: dprintf(STDOUT_FILENO,"\nRead interrupted, repeat.\n");
continue;
default: errExit("read");
}
if(rr == 0 )
dprintf(STDOUT_FILENO,"\n");
else
dprintf(STDOUT_FILENO,"[%2X]",buf);
} while (rr > 0);
}
else
if ((pfds[i].revents & (POLLHUP | ~POLLIN))) {
dprintf(STDOUT_FILENO,"Closing [%d], pipefd %d, pfds.fd %d\n",i,pipefd[i][0],pfds[i].fd);
if (close(pfds[i].fd) < 0 ) errExit("close pfds");
pfds[i].fd = -1;
pfds[i].events=0;
num_open_fds--;
dprintf(STDOUT_FILENO,"Still opened fds %d\n",num_open_fds);
}
}
}
}
return EXIT_SUCCESS;
}
TMP/Practice/trash/poll2.c
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#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>
#include <signal.h>
#include <poll.h>
#define NUM 4
#define errExit(msg) do { perror(msg); _exit(EXIT_FAILURE); } while (0)
#define errExit1(msg) { perror(msg); _exit(EXIT_FAILURE); }
struct Child {
unsigned char lifetime;
char* message;
};
void child_handler(int sig) {
pid_t pid;
while((pid = waitpid(-1, NULL, WNOHANG)) > 0);
}
int main(int argc, char *argv[]) {
struct sigaction new_act, old_act;
sigemptyset (&new_act.sa_mask);
new_act.sa_flags = 0;
new_act.sa_handler = child_handler;
sigaction (SIGCHLD, &new_act, &old_act);
int pipefd[NUM][2];
pid_t cpid[NUM];
int nfds, num_open_fds;
struct pollfd *pfds;
int ready;
unsigned char i,tt;
char buf;
int rr;
struct Child children[NUM];
if (argc != 2) {
fprintf(stderr, "Usage: %s <string>\n", argv[0]);
_exit(EXIT_FAILURE);
}
srand(time(NULL));
num_open_fds = nfds = NUM;
pfds = calloc(nfds, sizeof(struct pollfd));
if (pfds == NULL) errExit("malloc");
for (i=0;i<NUM;i++){
tt=(unsigned char)rand()%9;
dprintf(STDOUT_FILENO,"child %d life time is %X\n",i,tt);
children[i].lifetime = tt;
children[i].message = argv[1];
if (pipe(pipefd[i]) == -1) errExit("pipe");
pfds[i].fd = pipefd[i][0];
pfds[i].events = POLLIN;
if ((cpid[i] = fork()) == -1) errExit("fork");
if (cpid[i] == 0) {
close(pipefd[i][0]);
for (int j=0; j<i; j++){
close(pipefd[j][0]);
close(pipefd[j][1]);
}
write(pipefd[i][1], children + i, sizeof(struct Child));
sleep(tt);
close(pipefd[i][1]);
_exit(EXIT_SUCCESS);
}
}
for (int j=0; j<i; j++) close(pipefd[j][1]);
dprintf(STDOUT_FILENO,"Opened %d pipes, waiting...\n",num_open_fds);
while (num_open_fds > 0) {
do{
dprintf(STDOUT_FILENO,"\ntry poll:\n");
for (i = 0; i < NUM; i++) pfds[i].revents=0;
ready = poll(pfds, nfds, -1);
if(ready == -1)
switch (errno) {
case EINTR: dprintf(STDOUT_FILENO,"\nPoll interrupted, repeat.\n");
continue;
default: errExit("poll");
}
} while (ready <= 0);
for (i = 0; i < NUM; i++) {
if (pfds[i].revents != 0) {
dprintf(STDOUT_FILENO," fd=%d; events: %7s%8s%9s%8s%8s ", pfds[i].fd,
(pfds[i].revents & POLLIN) ? "POLLIN " : "",
(pfds[i].revents & POLLHUP) ? "POLLHUP " : "",
(pfds[i].revents & POLLNVAL) ? "POLLNVAL " : "",
(pfds[i].revents & POLLPRI) ? "POLLPRI " : "",
(pfds[i].revents & POLLERR) ? "POLLERR " : "");
if (pfds[i].revents & POLLIN) {
do {
rr=read(pfds[i].fd, &buf, 1);
if (rr < 0)
switch (errno) {
case EINTR: dprintf(STDOUT_FILENO,"\nRead interrupted, repeat.\n");
continue;
default: errExit("read");
}
if(rr == 0 )
dprintf(STDOUT_FILENO,"\n");
else
dprintf(STDOUT_FILENO,"[%2X]",buf);
} while (rr > 0);
}
else
if ((pfds[i].revents & (POLLHUP | ~POLLIN))) {
dprintf(STDOUT_FILENO,"Closing [%d], pipefd %d, pfds.fd %d\n",i,pipefd[i][0],pfds[i].fd);
if (close(pfds[i].fd) < 0 ) errExit("close pfds");
pfds[i].fd = -1;
pfds[i].events=0;
num_open_fds--;
dprintf(STDOUT_FILENO,"Still opened fds %d\n",num_open_fds);
}
}
}
}
return EXIT_SUCCESS;
}
TMP/Practice/trash/prog1
+37
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@@ -0,0 +1,37 @@
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/mman.h>
#include <unistd.h>
#include <fcntl.h>
#include <error.h>
int mtx(int *m, int s){
srand(time(NULL));
for(int i = 0; i < s; i++)
*m++ = rand()%0xffff;
return 0;
}
int main(int argc, char *argv[]){
int fd;
int n,s;
size_t ms;
int *m;
int *fa;
if (argc < 3){
printf("Usage: a.out size filename\n");
}
s = n*n;
ms = s*sizeof(int);
if((fd = open(argv[2], O_RDWR | O_CREAT | O_TRUNC, 0664)) == -1){
perror("open: ");
exit(errno);
}
}
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be be be be
aaaaaaaaaaa