1 人の父と 2 人の息子の 3 つのプロセスがあります。息子はフォークする前に作成されたすべての遺産を取得するため、息子または父から以前に作成した文字列の配列にアクセスするにはどうすればよいですか? string_hashes という名前と、息子と父親からのハッシュで分岐する前に作成した文字列の 2 つの配列にアクセスしたいですか? 助けてくれてありがとう...
#include <unistd.h>
#include <sys/wait.h>
#include <sys/types.h>
#include <stdio.h>
#include <strings.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <errno.h>
#define PIPE_NAME "np_workmaster"
#define max_chars_string 1000
#define n_childs 2
typedef struct
{
int a;
int b;
} numbers;
pid_t childs[n_childs];
void read_lines(char * filename, char (*pointer)[max_chars_string],int init_read,int n_lines);
void get_strings_hash(char (*pointer_strings)[max_chars_string],char (*pointer_hashes)[max_chars_string],int total_lines);
void worker(){ // meter as funcoes de ler passwords no filho
char * ant = "";
char hash_char;
printf("[%d] I'm the son!\n", getpid());
printf("[%d] My parent is: %d\n", getpid(), getppid());
exit(0);
}
void pparent(){// sera o ultimo processo a terminar mostrando as passwords ja recebidas do dispatcher que recebe dos outros filhos
printf("[%d] I'm the father!\n", getpid());
//dispatcher() // criar funcao dispatcher que envia dados ao outro processo...
int fd;
if ((fd=open(PIPE_NAME, O_WRONLY)) < 0)
{
perror("Cannot open pipe for writing: ");
exit(0);
}
// Do some work
while (1) {
// here i want to access arrays strings_hashes and hashes from the father and sons
printf("[CLIENT] Sending (%d,%d) for adding\n", n.a, n.b);
write(fd, &n, sizeof(numbers));
sleep(2);
}
return 0;
}
int main(int argc, char **argv)
{
char *filename;
int status;//status do processos filho
int resources[2];// numero de linhas que cada processo tem de ler
//char * chave_iniciadora = "";
int n_lines; //numero de linhas do ficheiro
int i = 0;
filename = (char*)malloc(strlen(argv[1])*sizeof(char)+1);
if(argc !=3){
fprintf(stderr, "Usage : %s [text_file] [cores]",argv[0]);
exit(0);
}
strcpy(filename,argv[1]);
n_lines = count_lines(filename); // contem o numero de linhas
//definicao arrays
char strings_hashes[n_lines][max_chars_string];//aray de string com as strings lidas do ficheiro
char hashes[n_lines][max_chars_string]; // array de strings com as hashes
char * pointer_string = &strings_hashes[0][0]; // ponteiro para o inicio do array das strings lidas do ficheiro
char * pointer_hashes = &hashes[0][0];//ponteiro para o inicio do array das hashes
//funcoes
share_resources(atoi(argv[2]),n_lines,resources);
read_lines(filename,strings_hashes,0,n_lines); // le as strings do ficheiro e passa para o array
get_strings_hash(strings_hashes,hashes,n_lines);
//
for(i = 0; i<n_lines;i++){
printf("%s",strings_hashes[i]);
}
for(i = 0; i<n_lines;i++){
printf("%s",hashes[i]);
}
//
for(i = 0; i <atoi(argv[2]);i++){
childs[i] = fork();
if(childs[i] == -1){
perror("Failed to fork");
return 1;
}
if (childs[i] == 0)
{
worker();
}
else
{
pparent();
wait(&status);
if (!status)
printf("\nOK\n");
else
printf("\nSomething is wrong...\n");
}
}
return 0;
}
///////////////////////////////////////////////////////////////////
//funcionar
void get_strings_hash(char (*pointer_strings)[max_chars_string],char (*pointer_hashes)[max_chars_string],int total_lines)//vai ao array de strings e corta a parte de hash e mete num array
{
int i = 0;
char *strings;
char *hash;
for(i = 0;i<total_lines;i++){
strings = (char*)malloc(strlen(pointer_strings)*sizeof(char)+1);
strcpy(strings,*pointer_strings);
hash = (char*)malloc(strlen(pointer_strings)*sizeof(char)+1);
find_hash(strings,hash);
strcpy(*pointer_hashes,hash);
pointer_hashes++;
pointer_strings++;
}
}
//funcionar
int count_lines(char * filename){
FILE *fp;
char str[max_chars_string];
int i =0;
if((fp = fopen("ficheiro_leitura.txt", "r"))==NULL) {
printf("Cannot open file.\n");
exit(1);
}
while(!feof(fp)) {
while(fgets(str, sizeof str, fp)) {
i++;
}
}
fclose(fp);
return i;
}
//funcionar
void read_lines(char * filename, char (*pointer)[max_chars_string],int init_read,int n_lines){
FILE *fp;
char str[max_chars_string];
int i =0;
if((fp = fopen(filename, "r"))==NULL) {
printf("Cannot open file.\n");
exit(1);
}
if(init_read>0 && init_read<=n_lines){
for(i = 0;i<init_read;i++){
fgets(str, sizeof str, fp);
for(i = init_read;i<n_lines;i++){
fgets(str, sizeof str, fp);
strcpy(*pointer, str); //copia para a posicao actula do ponteiro
pointer++;
}
}
}
if(init_read<=n_lines && init_read==0){
for(i = init_read;i<n_lines;i++){
fgets(str, sizeof str, fp);
strcpy(*pointer, str); //copia para a posicao actula do ponteiro
pointer++;
}
}
fclose(fp);