Javaが分からなすぎるので、JVMについて勉強する(5) -ClassLoader編 その2- 

if (pthread_create(&tid, &attr, ThreadJavaMain, args) == 0) {
        void* tmp;
        pthread_join(tid, &tmp);
        rslt = (int)(intptr_t)tmp;
    }

//  ThreadJavaMainの定義は以下のようになっています
static void* ThreadJavaMain(void* args) {
    return (void*)(intptr_t)JavaMain(args);
}

    /* Initialize the virtual machine */
    start = CurrentTimeMicros();
    if (!InitializeJVM(&vm, &env, &ifn)) {
        JLI_ReportErrorMessage(JVM_ERROR1);
        exit(1);
    }

    JavaVMInitArgs args;
    jint r;

    memset(&args, 0, sizeof(args));
    args.version  = JNI_VERSION_1_2;
    args.nOptions = numOptions;
    args.options  = options;
    args.ignoreUnrecognized = JNI_FALSE;

    r = ifn->CreateJavaVM(pvm, (void **)penv, &args);

  result = Threads::create_vm((JavaVMInitArgs*) args, &can_try_again);

  // 中略
  // すごく気になる関数！
  classLoader_init1(); 
  // ...
  universe2_init();  // dependent on codeCache_init and stubRoutines_init1
  javaClasses_init();// must happen after vtable initialization, before referenceProcessor_init
  interpreter_init_code();  // after javaClasses_init and before any method gets linked
  // ...

void classLoader_init1() {
  EXCEPTION_MARK;
  ClassLoader::initialize(THREAD);
  if (HAS_PENDING_EXCEPTION) {
    vm_exit_during_initialization("ClassLoader::initialize() failed unexpectedly");
  }
}

// Initialize the class loader's access to methods in libzip.  Parse and
// process the boot classpath into a list ClassPathEntry objects.  Once
// this list has been created, it must not change order (see class PackageInfo)
// it can be appended to and is by jvmti.

  // lookup java library entry points
  load_java_library();
  // jimage library entry points are loaded below, in lookup_vm_options
  setup_bootstrap_search_path(THREAD);

void ClassLoader::setup_bootstrap_search_path(JavaThread* current) {
  const char* bootcp = Arguments::get_boot_class_path();
  assert(bootcp != NULL, "Boot class path must not be NULL");
  if (PrintSharedArchiveAndExit) {
    // Don't print bootcp - this is the bootcp of this current VM process, not necessarily
    // the same as the boot classpath of the shared archive.
  } else {
    trace_class_path("bootstrap loader class path=", bootcp);
  }
  setup_bootstrap_search_path_impl(current, bootcp);
}

_jrt_entry = new ClassPathImageEntry(JImage_file, canonical_path);

#0  ClassLoader::load_class (name=0x7fffc6b4e0f8, search_append_only=false, __the_thread__=0x7ffff00285c0)
#1  0x00007ffff6ce699c in SystemDictionary::load_instance_class_impl (class_name=0x7fffc6b4e0f8,
#2  0x00007ffff6ce6d35 in SystemDictionary::load_instance_class (name_hash=3867026853, name=0x7fffc6b4e0f8,
#3  0x00007ffff6ce4def in SystemDictionary::resolve_instance_class_or_null (name=0x7fffc6b4e0f8,
#4  0x00007ffff6ce39be in SystemDictionary::resolve_or_null (class_name=0x7fffc6b4e0f8, class_loader=...,
#5  0x00007ffff6ce37f5 in SystemDictionary::resolve_or_fail (class_name=0x7fffc6b4e0f8, class_loader=...,
#6  0x00007ffff5f2638b in SystemDictionary::resolve_or_fail (class_name=0x7fffc6b4e0f8, throw_error=true,
#7  0x00007ffff6dc5872 in vmClasses::resolve (id=vmClassID::Object_klass_knum, __the_thread__=0x7ffff00285c0)
#8  0x00007ffff6dc596c in vmClasses::resolve_until (limit_id=vmClassID::String_klass_knum,
#9  0x00007ffff6dc64d7 in vmClasses::resolve_through (last_id=vmClassID::Object_klass_knum,
#10 0x00007ffff6dc5a24 in vmClasses::resolve_all (__the_thread__=0x7ffff00285c0)
#11 0x00007ffff6ce7b9e in SystemDictionary::initialize (__the_thread__=0x7ffff00285c0)
#12 0x00007ffff6d63e48 in Universe::genesis (__the_thread__=0x7ffff00285c0)
#13 0x00007ffff6d663cf in universe2_init () at /home/sakura/sandbox/jdk/src/hotspot/share/memory/universe.cpp:969
#14 0x00007ffff6523bbc in init_globals () at /home/sakura/sandbox/jdk/src/hotspot/share/runtime/init.cpp:138
#15 0x00007ffff6d456c8 in Threads::create_vm (args=0x7ffff55c0dd0, canTryAgain=0x7ffff55c0cdb)

void SystemDictionary::initialize(TRAPS) {
  // Allocate arrays
  _placeholders        = new PlaceholderTable(_placeholder_table_size);
  _loader_constraints  = new LoaderConstraintTable(_loader_constraint_size);
  _invoke_method_table = new SymbolPropertyTable(_invoke_method_size);
  _pd_cache_table = new ProtectionDomainCacheTable(defaultProtectionDomainCacheSize);

#if INCLUDE_CDS
  SystemDictionaryShared::initialize();
#endif

  // Resolve basic classes
  vmClasses::resolve_all(CHECK);
  // Resolve classes used by archived heap objects
  if (UseSharedSpaces) {
    HeapShared::resolve_classes(THREAD);
  }
}