c - 无法终止并发运行的进程

Question

我正在同时运行程序 A.c，比如说 5 次。部分代码如下:

int main(int argc, char *argv[]){

    char s = 0;
    int i = 0;
    pid_t procB_id = 0;
    int retval = 0;

    struct sigaction act;
    ch = &c[0];
    memset(c, 0, 50);

    // open the file entered in the command-line for reading 
    fptr = fopen(argv[1], "r");

    if(fptr == NULL){
            printf("Error - input file could not be opened for reading!\n");
        exit(EXIT_FAILURE);
        }

    // Write characters read by file pointer to an array
    while((s=fgetc(fptr)) != EOF){
        ch[i] = s;
        i++;
    }
    printf("Length of text: %d\n",i);

    sigemptyset(&act.sa_mask);
    act.sa_flags = SA_SIGINFO;
    act.sa_sigaction = handlerA;

    if((sigaction(SIGRTMIN, &act, NULL)) != 0){
        printf("Signal could not be registered!\n");    
    }

    //get PID of daemon B to be able to send it a real-time signal, indicating that A has started
    procB_id = getBprocessID();

    printf("PROCESS ID OF B: %d\n", (int) procB_id);

    //call sendSignal() method to send real-time signal to B
    retval = sendBSignal(procB_id);

    if(retval == 1){

        while(n < 0){
            //printf("BEFORE PAUSE\n");
            pause();
        }
        //writeToFIFO(n);
        if(writeToFIFO(n) == 1){
            n = -1;
            exit(EXIT_SUCCESS);
        }
    }


    while (1);
}

代码的相关部分实际上是 exit(EXIT_SUCCESS)。但是，当我并行运行进程 A 时，只有 1 个进程正在退出，而不是其余的。其他人还在跑。我正在通过以下 shell 脚本并行运行该过程:

for ((i=1;i<=5;i++))

do

    ./A file.txt &
done

“file.txt”是每个进程必须单独读取的文件。我想杀死所有 5 个进程，而不仅仅是一个。有谁知道我该怎么做？请帮忙。我想我的代码不正确，但我不知道该怎么做。

Answer 1

I want to kill all 5 processes, not just one. Does anyone know how I can do that?

pkill -f "A file.txt"

---

您可能丢失了无限 while(1) 的 do 循环:

do {
    procB_id = getBprocessID();

    printf("PROCESS ID OF B: %d\n", (int) procB_id);

    //call sendSignal() method to send real-time signal to B
    retval = sendBSignal(procB_id);

    if(retval == 1){
        while(n < 0){
            //printf("BEFORE PAUSE\n");
            pause();
        }
        //writeToFIFO(n);
        if(writeToFIFO(n) == 1){
            n = -1;
            exit(EXIT_SUCCESS);
        }
    }
} while (1);