linux c判断进程假死

2. **使用`kill`命令**：
向进程发送信号，检查其是否能正常响应。
```c
#include <stdio.h>
#include <stdlib.h>
#include <signal.h>

int is_process_responsive(int pid) {
    if (kill(pid, 0) == -1) {
        return 0; // 进程不存在或无权限
    }
    return 1; // 进程存在且响应
}

int main() {
    int pid = 1234; // 替换为实际进程ID
    if (is_process_responsive(pid)) {
        printf("Process %d is responsive.
", pid);
    } else {
        printf("Process %d is unresponsive or does not exist.
", pid);
    }
    return 0;
}

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <signal.h>

int is_process_dead(int pid) {
    char cmd[50];
    sprintf(cmd, "ps -o state= -p %d", pid);
    FILE *fp = popen(cmd, "r");
    if (fp == NULL) {
        perror("popen");
        return -1;
    }

    char state;
    fscanf(fp, "%c", &state);
    pclose(fp);

    if (state == 'D' || state == 'Z') {
        return 1; // 进程假死
    }
    return 0; // 进程正常
}

void restart_process(int pid) {
    printf("Restarting process %d...
", pid);
    // 这里可以添加重启进程的具体逻辑，例如调用系统命令或API
    system("your_restart_command_here"); // 替换为实际的重启命令
}

int main() {
    int pid = 1234; // 替换为实际进程ID
    if (is_process_dead(pid)) {
        printf("Process %d is dead or unresponsive. Attempting to restart...
", pid);
        restart_process(pid);
    } else {
        printf("Process %d is running normally.
", pid);
    }
    return 0;
}