linux gdb多线程调试

info threads  # 查看所有线程
thread <id>   # 切换到指定线程，<id>是线程编号

break <line>  # 在指定行设置断点
condition <breakpoint> <condition>  # 设置条件断点

watch <variable>  # 监控变量变化
info locals      # 查看当前栈帧中的局部变量

#include <pthread.h>
#include <stdio.h>

void* thread_func(void* arg) {
    int* num = (int*)arg;
    printf("Thread: %d\n", *num);
    return NULL;
}

int main() {
    pthread_t thread1, thread2;
    int num1 = 1, num2 = 2;

    pthread_create(&thread1, NULL, thread_func, &num1);
    pthread_create(&thread2, NULL, thread_func, &num2);

    pthread_join(thread1, NULL);
    pthread_join(thread2, NULL);

    return 0;
}

gcc -g -o multithread multithread.c -lpthread
gdb multithread

break thread_func
run
info threads
thread <id>
print num