a friendly greeting. I get a very strange problem when using JMH. Here：
ERROR: transport error 202: connect failed: Connection refused
ERROR: JDWP Transport dt_socket failed to initialize, TRANSPORT_INIT(510)
JDWP exit error AGENT_ERROR_TRANSPORT_INIT(197): No transports initialized [./src/jdk.jdwp.agent/share/native/libjdwp/debugInit.c:735]
<forked VM failed with exit code 2>
<stdout last='20 lines'>
</stdout>
<stderr last='20 lines'>
transport error 202: connect failed: Connection refused
OpenJDK 64-Bit Server VM warning: -XX:ThreadPriorityPolicy=1 may require system level permission, e.g., being the root user. If the necessary permission is not possessed, changes to priority will be silently ignored.
ERROR: transport error 202: connect failed: Connection refused
ERROR: JDWP Transport dt_socket failed to initialize, TRANSPORT_INIT(510)
JDWP Transport dt_socket failed to initialize, TRANSPORT_INIT(510)
JDWP exit error AGENT_ERROR_TRANSPORT_INIT(197): No transports initialized [./src/jdk.jdwp.agent/share/native/libjdwp/debugInit.c:735]
</stderr>
Java version：graalvm-11 Build by Gradle：6.8.3
Gradler config：
plugins {
id 'java'
}
group = 'com.leung.jmh'
version = '1.0'
sourceCompatibility = 11
repositories {
jcenter()
mavenCentral()
}
dependencies {
// https://mvnrepository.com/artifact/org.openjdk.jmh/jmh-core
implementation 'org.openjdk.jmh:jmh-core:1.33'
annotationProcessor 'org.openjdk.jmh:jmh-generator-annprocess:1.33'
}
The test code from official example :
public class Sample_helloworld {
@Benchmark
public void printHello ()
{
}
public static void main (String[] args) throws RunnerException {
var opt = new OptionsBuilder()
.include(Sample_helloworld.class.getName())
.forks(1)
.build() ;
new Runner(opt).run() ;
}
}
Has anyone ever had this problem? Looking forward to your reply!