获取Linux中Java线程的线程ID

负责连接C代码(GetThreadID.java)的Java类:public class GetThreadID { public static native int get_tid(); static { System.loadLibrary("GetThreadID"); }}负责获取线程ID(GetThread.c)的C文件:#include <jni.h>#include <syscall.h>#include "GetThreadID.h"JNIEXPORT jint JNICALLJava_GetThreadID_get_1tid(JNIEnv *env, jobject obj) { jint tid = syscall(__NR_gettid); return tid;}如何使用GetThreadID类的示例:class Main { public static void main(String[] args) { int tid = GetThreadID.get_tid(); System.out.println("TID=" + tid); }}最后，构建指令(javah自动生成GetThreadID.h):JAVA_HOME=$(readlink -f /usr/bin/javac | sed "s:bin/javac::")export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:.javac GetThreadID.javajavah GetThreadIDgcc -I${JAVA_HOME}/include -fPIC -shared GetThreadID.c -o libGetThreadID.sojavac Main.javajava MainI have a Java application where some threads are created (via new Thread()). Using ps I can see they have different thread IDs (LWP column) and I would like to obtain those IDs from within the Java application.In most of the posts related to this topic that I have found (e.g., this one), the solution is to use ManagementFactory.getRuntimeMXBean().getName().Using that method, however, gives me the PID of the main thread (even if I call it from one of the threads), so it is not really solving my problem.Is there any way to obtain the thread ID for every single Thread created by an application?Would it be possible to use JNI to accomplish it? If somehow I could interface to a C function where I could call syscall(__NR_gettid), that could solve my problem. I really do not care about portability, so I am totally okay with a solution that would only work for a Linux machine.UPDATE: I have actually solved my problem by using JNI. Details are explained in my answer. Thank you all for your suggestions/comments. 解决方案 In the end, I found the JNI way to be the best one to solve my problem. As a reference, I post the code and build instructions for it (based on the example at Wikipedia):Java class responsible to interface to the C code (GetThreadID.java):public class GetThreadID { public static native int get_tid(); static { System.loadLibrary("GetThreadID"); }}C file responsible to obtain the thread ID (GetThread.c):#include <jni.h>#include <syscall.h>#include "GetThreadID.h"JNIEXPORT jint JNICALLJava_GetThreadID_get_1tid(JNIEnv *env, jobject obj) { jint tid = syscall(__NR_gettid); return tid;}An example of how to use GetThreadID class:class Main { public static void main(String[] args) { int tid = GetThreadID.get_tid(); System.out.println("TID=" + tid); }}And finally, the build instructions (javah automatically generates GetThreadID.h):JAVA_HOME=$(readlink -f /usr/bin/javac | sed "s:bin/javac::")export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:.javac GetThreadID.javajavah GetThreadIDgcc -I${JAVA_HOME}/include -fPIC -shared GetThreadID.c -o libGetThreadID.sojavac Main.javajava Main 这篇关于获取Linux中Java线程的线程ID的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！ 上岸，阿里云！