#!/bin/bash

# 设置抓取次数计数器
capture_count=0

# 获取Java进程的PID
pid=$(pgrep -f "java")
while [ $capture_count -lt 5000 ]; do
    # 定义文件名
    output_file="capture_$capture_count.txt"

    java_pids=$(pgrep -fl "java" | awk '{print $1}')
    # 获取当前线程数
    #cpu_usage=$(top -bn 1 | grep "Cpu(s)" | awk '{print $2 + $4}')
    thread_count=$(ps -T -p $java_pids| wc -l)
    # 获取当前时间
    current_time=$(date +"%Y-%m-%d %H:%M:%S") 
    if [ $(expr "$thread_count" ">" 730) -eq 1 ]; then
        echo "High thread count: $thread_count"

        # 抓取每个Java进程的堆栈信息
        for pid in $java_pids; do
            jstack_output=$(jstack $pid)
            echo "$current_time $jstack_output" > "$output_file"
            echo "JVM Stack for PID $pid (Capture $capture_count):"
        done
        
        # 增加抓取次数计数器
        capture_count=$((capture_count + 1))
    else
        echo "thread count: $current_time $thread_count"
    fi
    
    #sleep 1
    #10毫秒
    usleep 10000
done