linux下跟踪线程

# 安装perf工具（如果未安装）
sudo apt-get install linux-tools-common linux-tools-generic

# 使用perf记录线程事件
sudo perf record -e sched:sched_switch -a -g -- sleep 10

# 分析记录的数据
sudo perf report

# 启动gdb并附加到目标进程
gdb -p <pid>

# 查看所有线程
info threads

# 切换到指定线程
thread <thread-id>

# 跟踪线程的执行
set pagination off
run

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

#define NUM_THREADS 2

int counter = 0;
pthread_mutex_t mutex1, mutex2;

void* thread_func(void* arg) {
    int id = *(int*)arg;
    if (id == 0) {
        pthread_mutex_lock(&mutex1);
        pthread_mutex_lock(&mutex2);
    } else {
        pthread_mutex_lock(&mutex2);
        pthread_mutex_lock(&mutex1);
    }
    counter++;
    pthread_mutex_unlock(&mutex2);
    pthread_mutex_unlock(&mutex1);
    return NULL;
}

int main() {
    pthread_t threads[NUM_THREADS];
    int thread_ids[NUM_THREADS];

    pthread_mutex_init(&mutex1, NULL);
    pthread_mutex_init(&mutex2, NULL);

    for (int i = 0; i < NUM_THREADS; i++) {
        thread_ids[i] = i;
        pthread_create(&threads[i], NULL, thread_func, &thread_ids[i]);
    }

    for (int i = 0; i < NUM_THREADS; i++) {
        pthread_join(threads[i], NULL);
    }

    printf("Counter: %d\n", counter);

    pthread_mutex_destroy(&mutex1);
    pthread_mutex_destroy(&mutex2);

    return 0;
}