66 lines
1.1 KiB
C
Executable File
66 lines
1.1 KiB
C
Executable File
#include <stdio.h>
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#include <stdlib.h>
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#include <stdint.h>
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#include <sys/types.h>
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#include <fcntl.h>
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#include <sys/stat.h>
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#include <signal.h>
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volatile unsigned char cell;
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int fd[2];
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void
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usr_hndl(int sig)
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{
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write(fd[1], &cell, 1);
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kill(getppid(), SIGUSR1);
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return;
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}
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void
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usr_hndl1(int sig)
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{
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read(fd[0], &cell, 1);
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return;
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}
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int
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main(int argc, char **argv)
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{
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pipe(fd);
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pid_t *mas = malloc((argc - 1) * sizeof(pid_t));
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int n = argc - 1;
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int64_t size = 0;
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for (int i = 1; i < argc; ++i) {
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struct stat st;
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lstat(argv[i], &st);
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size = st.st_size;
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pid_t pid = fork();
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if (!pid) {
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int file = open(argv[i], O_RDONLY);
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close(fd[0]);
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signal(SIGUSR1, usr_hndl);
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for (;;) {
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pause();
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}
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_exit(1);
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}
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mas[i - 1] = pid;
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}
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close(fd[1]);
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signal(SIGUSR1, usr_hndl1);
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unsigned int adr;
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while (scanf("%u", &adr) != -1) {
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kill(mas[adr % n], SIGUSR1);
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}
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return 0;
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}
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