cms VM_Thread

VM Thread

创建过程

// vmThread.cpp
VMThread::VMThread() : NamedThread() {
    set_name("VM Thread");
}
void VMThread::create() {
    _vm_thread = new VMThread();
}

jint Threads::create_vm(JavaVMInitArgs* args, bool* canTryAgain) {
    VMThread::create();
    Thread* vmthread = VMThread::vm_thread();
    os::create_thread(vmthread, os::vm_thread);
    os::start_thread(vmthread);
}

run 方法

void VMThread::run() {
    this->initialize_named_thread();
    this->loop();
}
void VMThread::loop() {    
    while(true) {
        // 代码省略
    }
}

任务列表

loop

位置：VMThread::loop

execute

位置：VMThread::execute

该接口调用方有137个，涉及多个垃圾回收器和其他方法。下面只列举CMS相关

VM_CMS_Initial_Mark

VM_CMS_Final_Remark

VM_GenCollectFullConcurrent