void createVm( const VmLoader& loader,
const OptionList& options,
bool ignoreUnrecognized ) {
globalLoader = std::unique_ptr<VmLoader>( loader.clone() );
globalLoader->loadVm();
JavaVM* vm;
JNIEnv* env;
JavaVMInitArgs vm_args;
JavaVMOption* jniOptions = options.createJniOptions();
vm_args.version = globalLoader->version();
vm_args.options = jniOptions;
vm_args.nOptions = jint( options.size() );
vm_args.ignoreUnrecognized = ignoreUnrecognized;
jint rc = globalLoader->createJavaVM( &vm, reinterpret_cast<void**>( &env ), &vm_args );
options.destroyJniOptions( jniOptions );
if ( rc != 0 ) {
string msg = "Unable to create the virtual machine. The error was " + std::to_string( rc );
throw JNIException( msg );
}
jclass runtimeClass = env->FindClass( "java/lang/Runtime" );
if ( ! runtimeClass ) {
string msg = "Assert failed: Unable to find the class, java.lang.Runtime.";
throw JNIException( msg );
}
jmethodID runtimeGetRuntime = env->GetStaticMethodID( runtimeClass, "getRuntime", "()Ljava/lang/Runtime;" );
if ( ! runtimeGetRuntime ) {
deleteLocalRef( env, runtimeClass );
string msg = "Assert failed: Unable to find the method, Runtime.getRuntime().";
throw JNIException( msg );
}
jobject runtimeObject = env->CallStaticObjectMethod( runtimeClass, runtimeGetRuntime );
if ( ! runtimeObject ) {
deleteLocalRef( env, runtimeClass );
string msg = "Unable to invoke Runtime.getRuntime()";
try
{
helper::catchAndThrow();
}
catch (JNIException& e)
{
msg.append("\ncaused by:\n");
msg.append(e.what());
}
throw JNIException( msg );
}
jmethodID runtimeAddShutdownHook = env->GetMethodID( runtimeClass, "addShutdownHook", "(Ljava/lang/Thread;)V" );
if ( ! runtimeAddShutdownHook ) {
deleteLocalRef( env, runtimeObject );
deleteLocalRef( env, runtimeClass );
string msg = "Assert failed: Unable to find the method, Runtime.addShutdownHook().";
throw JNIException( msg );
}
jclass shutdownHookClass = env->FindClass( "jace/util/ShutdownHook" );
if ( ! shutdownHookClass ) {
deleteLocalRef( env, runtimeObject );
deleteLocalRef( env, runtimeClass );
string msg = "Assert failed: Unable to find the class, jace.util.ShutdownHook. Did you forget to include "
"jace-runtime.jar in your classpath at runtime?";
throw JNIException( msg );
}
// Register the native method jace.util.ShutdownHook.signalVMShutdown
JNINativeMethod signalVMShutdown;
signalVMShutdown.fnPtr = reinterpret_cast<void*>(Java_jace_util_ShutdownHook_signalVMShutdown);
signalVMShutdown.name = const_cast<char*>("signalVMShutdown");
signalVMShutdown.signature = const_cast<char*>("()V");
jint result = env->RegisterNatives(shutdownHookClass, &signalVMShutdown, 1);
if (result != JNI_OK) {
deleteLocalRef( env, runtimeObject );
deleteLocalRef( env, runtimeClass );
deleteLocalRef( env, shutdownHookClass );
string msg = "Assert failed: Unable to register native method, jace.util.ShutdownHook.signalVMShutdown()";
throw JNIException( msg );
}
jmethodID shutdownHookGetInstance = env->GetStaticMethodID( shutdownHookClass, "getInstance", "()Ljace/util/ShutdownHook;" );
if ( ! shutdownHookGetInstance ) {
deleteLocalRef( env, runtimeObject );
deleteLocalRef( env, runtimeClass );
deleteLocalRef( env, shutdownHookClass );
string msg = "Assert failed: Unable to find the method, jace.util.ShutdownHook.getInstance()";
throw JNIException( msg );
}
jobject shutdownHookObject = env->CallStaticObjectMethod( shutdownHookClass, shutdownHookGetInstance );
if ( ! shutdownHookObject ) {
deleteLocalRef( env, runtimeObject );
deleteLocalRef( env, runtimeClass );
deleteLocalRef( env, shutdownHookClass );
string msg = "Unable to invoke jace.util.ShutdownHook.getInstance()";
try
{
helper::catchAndThrow();
}
catch (JNIException& e)
{
msg.append("\ncaused by:\n");
msg.append(e.what());
}
throw JNIException( msg );
}
env->CallVoidMethod( runtimeObject, runtimeAddShutdownHook, shutdownHookObject );
try
{
helper::catchAndThrow();
}
catch (JNIException& e)
{
string msg = "Exception thrown invoking Runtime.addShutdownHook(shutdownHook)";
msg.append("\ncaused by:\n");
msg.append(e.what());
throw JNIException( msg );
}
deleteLocalRef( env, runtimeObject );
deleteLocalRef( env, runtimeClass );
deleteLocalRef( env, shutdownHookClass );
}
