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  • Server error 500: Undefinable problem with my Zend Framework based site

    - by sanders
    Lately I had to reinstall my development site on my ubuntu machine since my system crashed after an os update. 4 days later my site is still not running as it should. Whenever i do an action which has in it an action on a database, it stops working. For example when Registring a new user, i get the following error: [Sun Jul 25 20:07:20 2010] [error] [client 127.0.0.1] PHP Notice: Trying to get property of non-object in /var/www/nrka2/application/bootstrap/Bootstrap.php on line 169, referer: http://nrka2/user/register [Sun Jul 25 20:07:20 2010] [error] [client 127.0.0.1] PHP Stack trace:, referer: http://nrka2/user/register [Sun Jul 25 20:07:20 2010] [error] [client 127.0.0.1] PHP 1. {main}() /var/www/nrka2/public/index.php:0, referer: http://nrka2/user/register [Sun Jul 25 20:07:20 2010] [error] [client 127.0.0.1] PHP 2. require() /var/www/nrka2/public/index.php:2, referer: http://nrka2/user/register [Sun Jul 25 20:07:20 2010] [error] [client 127.0.0.1] PHP 3. Zend_Application->bootstrap() /var/www/nrka2/application/application.php:23, referer: http://nrka2/user/register [Sun Jul 25 20:07:20 2010] [error] [client 127.0.0.1] PHP 4. Zend_Application_Bootstrap_BootstrapAbstract->bootstrap() /var/www/Zend/ZendFramework-1.10.6/library/Zend/Application.php:355, referer: http://nrka2/user/register [Sun Jul 25 20:07:20 2010] [error] [client 127.0.0.1] PHP 5. Zend_Application_Bootstrap_BootstrapAbstract->_bootstrap() /var/www/Zend/ZendFramework-1.10.6/library/Zend/Application/Bootstrap/BootstrapAbstract.php:583, referer: http://nrka2/user/register [Sun Jul 25 20:07:20 2010] [error] [client 127.0.0.1] PHP 6. Zend_Application_Bootstrap_BootstrapAbstract->_executeResource() /var/www/Zend/ZendFramework-1.10.6/library/Zend/Application/Bootstrap/BootstrapAbstract.php:619, referer: http://nrka2/user/register [Sun Jul 25 20:07:20 2010] [error] [client 127.0.0.1] PHP 7. Bootstrap->_initViewSettings() /var/www/Zend/ZendFramework-1.10.6/library/Zend/Application/Bootstrap/BootstrapAbstract.php:666, referer: http://nrka2/user/register [Sun Jul 25 20:07:22 2010] [error] [client 127.0.0.1] PHP Notice: Trying to get property of non-object in /var/www/nrka2/application/bootstrap/Bootstrap.php on line 169, referer: http://nrka2/css/main.css [Sun Jul 25 20:07:22 2010] [error] [client 127.0.0.1] PHP Stack trace:, referer: http://nrka2/css/main.css [Sun Jul 25 20:07:22 2010] [error] [client 127.0.0.1] PHP 1. {main}() /var/www/nrka2/public/index.php:0, referer: http://nrka2/css/main.css [Sun Jul 25 20:07:22 2010] [error] [client 127.0.0.1] PHP 2. require() /var/www/nrka2/public/index.php:2, referer: http://nrka2/css/main.css [Sun Jul 25 20:07:22 2010] [error] [client 127.0.0.1] PHP 3. Zend_Application->bootstrap() /var/www/nrka2/application/application.php:23, referer: http://nrka2/css/main.css [Sun Jul 25 20:07:22 2010] [error] [client 127.0.0.1] PHP 4. Zend_Application_Bootstrap_BootstrapAbstract->bootstrap() /var/www/Zend/ZendFramework-1.10.6/library/Zend/Application.php:355, referer: http://nrka2/css/main.css [Sun Jul 25 20:07:22 2010] [error] [client 127.0.0.1] PHP 5. Zend_Application_Bootstrap_BootstrapAbstract->_bootstrap() /var/www/Zend/ZendFramework-1.10.6/library/Zend/Application/Bootstrap/BootstrapAbstract.php:583, referer: http://nrka2/css/main.css [Sun Jul 25 20:07:22 2010] [error] [client 127.0.0.1] PHP 6. Zend_Application_Bootstrap_BootstrapAbstract->_executeResource() /var/www/Zend/ZendFramework-1.10.6/library/Zend/Application/Bootstrap/BootstrapAbstract.php:619, referer: http://nrka2/css/main.css [Sun Jul 25 20:07:22 2010] [error] [client 127.0.0.1] PHP 7. Bootstrap->_initViewSettings() /var/www/Zend/ZendFramework-1.10.6/library/Zend/Application/Bootstrap/BootstrapAbstract.php:666, referer: http://nrka2/css/main.css My Bootstrap class looks like this: <?php class Bootstrap extends Zend_Application_Bootstrap_Bootstrap{ /** * * @var unknown_type */ public $frontcontroller; /** * * @var unknown_type */ protected $_logger; /** * * @var unknown_type */ protected $_acl; /** * * @var unknown_type */ protected $_auth; /** * Setup the logging */ protected function _initLogging() { $this->bootstrap('frontController'); $logger = new Zend_Log(); $writer = 'production' == $this->getEnvironment() ? new Zend_Log_Writer_Stream(APPLICATION_PATH . '/../data/logs/app.log') : new Zend_Log_Writer_Firebug(); $logger->addWriter($writer); if ('production' == $this->getEnvironment()) { $filter = new Zend_Log_Filter_Priority(Zend_Log::CRIT); $logger->addFilter($filter); } $this->_logger = $logger; Zend_Registry::set('log', $logger); } protected function _initDefaultModuleAutoloader(){ $this->_logger->info('Bootstrap '. __METHOD__); $this->_resourceLoader = new Zend_Application_Module_Autoloader(array( 'namespace' => 'EventManager', 'basePath' => APPLICATION_PATH . '/modules/eventManager', )); $this->_resourceLoader->addResourceTypes(array( 'modelResource' => array( 'path' => 'models/resources', 'namespace' => 'Resource', ), 'service' => array( 'path' => 'services', 'namespace' => 'Service' ), )); } // @todo develop this function protected function _initDbProfiler(){ $this->_logger->info('Bootstrap ' . __METHOD__); if ('production' !== $this->getEnvironment()) { $this->bootstrap('db'); $profiler = new Zend_Db_Profiler_Firebug('All DB Queries'); $profiler->setEnabled(true); $this->getPluginResource('db')->getDbAdapter()->setProfiler($profiler); } } /** * Add Controller Action Helpers */ protected function _initActionHelpers() { $this->_logger->info('Bootstrap ' . __METHOD__); Zend_Controller_Action_HelperBroker::addHelper(new SF_Controller_Helper_Acl()); Zend_Controller_Action_HelperBroker::addHelper(new SF_Controller_Helper_RedirectCommon()); Zend_Controller_Action_HelperBroker::addHelper(new SF_Controller_Helper_Service()); } /** * * @return unknown_type */ protected function _initRoutes(){ $this->_logger->info('Initialize Routes '. __METHOD__); $this->bootstrap('frontController'); $router = $this->frontController->getRouter(); $route = new Zend_Controller_Router_route( 'register', array( 'controller' => 'user', 'action' => 'register' ) ); $router->addRoute('register',$route); $route = new Zend_Controller_Router_route( 'login', array( 'controller' => 'user', 'action' => 'login' ) ); $router->addRoute('login',$route); $route = new Zend_Controller_Router_route( 'logout', array( 'controller' => 'user', 'action' => 'logout' ) ); $router->addRoute('logout',$route); } /** * * @return void */ protected function _initLocale(){ $this->_logger->info('Bootstrap '.__METHOD__); $locale = new Zend_Locale('nl_NL'); Zend_Registry::set('Zend_Locale', $locale); } protected function _initAcl(){ $this->_acl = new EventManager_Service_Acl(); } /** * * @return void */ protected function _initViewSettings(){ $this->_logger->info('Bootstrap '.__METHOD__); $this->bootstrap('view'); $this->bootstrap('Acl'); $this->_view = $this->getResource('view'); //set encoding and doctype $this->_view->setEncoding('UTF-8'); $this->_view->doctype('XHTML1_STRICT'); $this->_view->headMeta()->appendHttpEquiv('Content-Type', 'text/html; charset=UTF-8'); $this->_view->headMeta()->appendHttpEquiv('Content-Language', 'en-US'); //@todo op een later moment moeten hier nog de stylesheets worden toegevoegd $this->_view->headLink()->appendStylesheet('/css/main.css'); //$this->_view->headTitle('Event Manager'); /* Set the head style. $this->_view->headTitle->headStyle(); */ $this->_view->headTitle()->setSeparator(' - '); $this->_auth = Zend_Auth::getInstance(); $navigation = new Zend_Config_Xml(APPLICATION_PATH.'/configs/navigation.xml','nav'); $navContainer = new Zend_Navigation($navigation); $this->_view->navigation($navContainer)->setAcl($this->_acl)->setRole($this->_auth->getStorage()->read()->usr_role); //THIS IS LINE 169!!!!!!!!! } /** * Add graceful error handling to the dispatch, this will handle * errors during Front Controller dispatch. */ public function run() { $errorHandling = $this->getOption('errorhandling'); try { parent::run(); } catch(Exception $e) { if (true == (bool) $errorHandling['graceful']) { $this->__handleErrors($e, $errorHandling['email']); } else { throw $e; } } } /** * Handle errors gracefully, this will work as long as the views, * and the Zend classes are available * * @param Exception $e * @param string $email */ protected function __handleErrors(Exception $e, $email) { header('HTTP/1.1 500 Internal Server Error'); $view = new Zend_View(); $view->addScriptPath(dirname(__FILE__) . '/../views/scripts'); echo $view->render('fatalError.phtml'); if ('' != $email) { $mail = new Zend_Mail(); $mail->setSubject('Fatal error in application Storefront'); $mail->addTo($email); $mail->setBodyText( $e->getFile() . "\n" . $e->getMessage() . "\n" . $e->getTraceAsString() . "\n" ); @$mail->send(); } } } I have tried to debug my code, but everyting goes well until I do somethign with the db. But I don't know what goes wrong with the db. I don't get any clear error messages. Can someone help me? Some more possible interesting data: [bootstrap] resources.db.adapter = "PDO_MYSQL" resources.db.isdefaulttableadapter = true resources.db.params.dbname = "ladosa" resources.db.params.username = "root" resources.db.params.password = "root" resources.db.params.hostname = "localhost" resources.db.params.charset = "UTF8" resources.db.params.profiler.enabled = true resources.db.params.profiler.class = Zend_Db_Profiler_Firebug Autoloadernamespaces[] = "Zend_" Autoloadernamespaces[] = "SF_" phpsettings.display_errors = 0 phpsettings.error_reporting = 8191 phpSettings.date.timezone = "Europe/Amsterdam" bootstrap.path = APPLICATION_PATH"/bootstrap/Bootstrap.php" pluginPaths.resource_ = APPLICATION_PATH"/resources" resources.frontcontroller.moduledirectory = APPLICATION_PATH"/modules" resources.frontcontroller.defaultmodule = "eventManager" resources.frontcontroller.params.prefixDefaultModule = true resources.frontcontroller.exceptions = false resources.view[] = "" resources.layout.layoutPath = APPLICATION_PATH "/layouts/scripts" resources.view.encoding = "UTF-8" resources.view.title = Rode kruis Vrijwilligers applicatie ;resources.view.helperPath.Default_View_Helper = APPLICATION_PATH "/modules/eventManager/views/helpers" resources.layout.layout = "main" [production:bootstrap] [development:bootstrap] ;resources.frontController.throwExceptions = 1 ;phpSettings.display_startup_errors=1 ;phpSettings.display_errors = 1 ;resources.frontcontroller.throwerrors = [test:production] btw. I CAN login to my database command line with the given username and password. Update: today i decided to investigate on my http request and i came to an error 500. My apache logs don't give any related information, I think. I posted the logs above. Any idea's?

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  • Server error 500: Undefinable problem with my Zend Framework based site

    - by sanders
    Hello everyone, Lately I had to reinstall my development site on my ubuntu machine since my system crashed after an os update. 4 days later my site is still not running as it should. Whenever i do an action which has in it an action on a database, it stops working. For example when Registring a new user, i get the following error: [Sun Jul 25 20:07:20 2010] [error] [client 127.0.0.1] PHP Notice: Trying to get property of non-object in /var/www/nrka2/application/bootstrap/Bootstrap.php on line 169, referer: http://nrka2/user/register [Sun Jul 25 20:07:20 2010] [error] [client 127.0.0.1] PHP Stack trace:, referer: http://nrka2/user/register [Sun Jul 25 20:07:20 2010] [error] [client 127.0.0.1] PHP 1. {main}() /var/www/nrka2/public/index.php:0, referer: http://nrka2/user/register [Sun Jul 25 20:07:20 2010] [error] [client 127.0.0.1] PHP 2. require() /var/www/nrka2/public/index.php:2, referer: http://nrka2/user/register [Sun Jul 25 20:07:20 2010] [error] [client 127.0.0.1] PHP 3. Zend_Application->bootstrap() /var/www/nrka2/application/application.php:23, referer: http://nrka2/user/register [Sun Jul 25 20:07:20 2010] [error] [client 127.0.0.1] PHP 4. Zend_Application_Bootstrap_BootstrapAbstract->bootstrap() /var/www/Zend/ZendFramework-1.10.6/library/Zend/Application.php:355, referer: http://nrka2/user/register [Sun Jul 25 20:07:20 2010] [error] [client 127.0.0.1] PHP 5. Zend_Application_Bootstrap_BootstrapAbstract->_bootstrap() /var/www/Zend/ZendFramework-1.10.6/library/Zend/Application/Bootstrap/BootstrapAbstract.php:583, referer: http://nrka2/user/register [Sun Jul 25 20:07:20 2010] [error] [client 127.0.0.1] PHP 6. Zend_Application_Bootstrap_BootstrapAbstract->_executeResource() /var/www/Zend/ZendFramework-1.10.6/library/Zend/Application/Bootstrap/BootstrapAbstract.php:619, referer: http://nrka2/user/register [Sun Jul 25 20:07:20 2010] [error] [client 127.0.0.1] PHP 7. Bootstrap->_initViewSettings() /var/www/Zend/ZendFramework-1.10.6/library/Zend/Application/Bootstrap/BootstrapAbstract.php:666, referer: http://nrka2/user/register [Sun Jul 25 20:07:22 2010] [error] [client 127.0.0.1] PHP Notice: Trying to get property of non-object in /var/www/nrka2/application/bootstrap/Bootstrap.php on line 169, referer: http://nrka2/css/main.css [Sun Jul 25 20:07:22 2010] [error] [client 127.0.0.1] PHP Stack trace:, referer: http://nrka2/css/main.css [Sun Jul 25 20:07:22 2010] [error] [client 127.0.0.1] PHP 1. {main}() /var/www/nrka2/public/index.php:0, referer: http://nrka2/css/main.css [Sun Jul 25 20:07:22 2010] [error] [client 127.0.0.1] PHP 2. require() /var/www/nrka2/public/index.php:2, referer: http://nrka2/css/main.css [Sun Jul 25 20:07:22 2010] [error] [client 127.0.0.1] PHP 3. Zend_Application->bootstrap() /var/www/nrka2/application/application.php:23, referer: http://nrka2/css/main.css [Sun Jul 25 20:07:22 2010] [error] [client 127.0.0.1] PHP 4. Zend_Application_Bootstrap_BootstrapAbstract->bootstrap() /var/www/Zend/ZendFramework-1.10.6/library/Zend/Application.php:355, referer: http://nrka2/css/main.css [Sun Jul 25 20:07:22 2010] [error] [client 127.0.0.1] PHP 5. Zend_Application_Bootstrap_BootstrapAbstract->_bootstrap() /var/www/Zend/ZendFramework-1.10.6/library/Zend/Application/Bootstrap/BootstrapAbstract.php:583, referer: http://nrka2/css/main.css [Sun Jul 25 20:07:22 2010] [error] [client 127.0.0.1] PHP 6. Zend_Application_Bootstrap_BootstrapAbstract->_executeResource() /var/www/Zend/ZendFramework-1.10.6/library/Zend/Application/Bootstrap/BootstrapAbstract.php:619, referer: http://nrka2/css/main.css [Sun Jul 25 20:07:22 2010] [error] [client 127.0.0.1] PHP 7. Bootstrap->_initViewSettings() /var/www/Zend/ZendFramework-1.10.6/library/Zend/Application/Bootstrap/BootstrapAbstract.php:666, referer: http://nrka2/css/main.css My Bootstrap class looks like this: <?php class Bootstrap extends Zend_Application_Bootstrap_Bootstrap{ /** * * @var unknown_type */ public $frontcontroller; /** * * @var unknown_type */ protected $_logger; /** * * @var unknown_type */ protected $_acl; /** * * @var unknown_type */ protected $_auth; /** * Setup the logging */ protected function _initLogging() { $this->bootstrap('frontController'); $logger = new Zend_Log(); $writer = 'production' == $this->getEnvironment() ? new Zend_Log_Writer_Stream(APPLICATION_PATH . '/../data/logs/app.log') : new Zend_Log_Writer_Firebug(); $logger->addWriter($writer); if ('production' == $this->getEnvironment()) { $filter = new Zend_Log_Filter_Priority(Zend_Log::CRIT); $logger->addFilter($filter); } $this->_logger = $logger; Zend_Registry::set('log', $logger); } protected function _initDefaultModuleAutoloader(){ $this->_logger->info('Bootstrap '. __METHOD__); $this->_resourceLoader = new Zend_Application_Module_Autoloader(array( 'namespace' => 'EventManager', 'basePath' => APPLICATION_PATH . '/modules/eventManager', )); $this->_resourceLoader->addResourceTypes(array( 'modelResource' => array( 'path' => 'models/resources', 'namespace' => 'Resource', ), 'service' => array( 'path' => 'services', 'namespace' => 'Service' ), )); } // @todo develop this function protected function _initDbProfiler(){ $this->_logger->info('Bootstrap ' . __METHOD__); if ('production' !== $this->getEnvironment()) { $this->bootstrap('db'); $profiler = new Zend_Db_Profiler_Firebug('All DB Queries'); $profiler->setEnabled(true); $this->getPluginResource('db')->getDbAdapter()->setProfiler($profiler); } } /** * Add Controller Action Helpers */ protected function _initActionHelpers() { $this->_logger->info('Bootstrap ' . __METHOD__); Zend_Controller_Action_HelperBroker::addHelper(new SF_Controller_Helper_Acl()); Zend_Controller_Action_HelperBroker::addHelper(new SF_Controller_Helper_RedirectCommon()); Zend_Controller_Action_HelperBroker::addHelper(new SF_Controller_Helper_Service()); } /** * * @return unknown_type */ protected function _initRoutes(){ $this->_logger->info('Initialize Routes '. __METHOD__); $this->bootstrap('frontController'); $router = $this->frontController->getRouter(); $route = new Zend_Controller_Router_route( 'register', array( 'controller' => 'user', 'action' => 'register' ) ); $router->addRoute('register',$route); $route = new Zend_Controller_Router_route( 'login', array( 'controller' => 'user', 'action' => 'login' ) ); $router->addRoute('login',$route); $route = new Zend_Controller_Router_route( 'logout', array( 'controller' => 'user', 'action' => 'logout' ) ); $router->addRoute('logout',$route); } /** * * @return void */ protected function _initLocale(){ $this->_logger->info('Bootstrap '.__METHOD__); $locale = new Zend_Locale('nl_NL'); Zend_Registry::set('Zend_Locale', $locale); } protected function _initAcl(){ $this->_acl = new EventManager_Service_Acl(); } /** * * @return void */ protected function _initViewSettings(){ $this->_logger->info('Bootstrap '.__METHOD__); $this->bootstrap('view'); $this->bootstrap('Acl'); $this->_view = $this->getResource('view'); //set encoding and doctype $this->_view->setEncoding('UTF-8'); $this->_view->doctype('XHTML1_STRICT'); $this->_view->headMeta()->appendHttpEquiv('Content-Type', 'text/html; charset=UTF-8'); $this->_view->headMeta()->appendHttpEquiv('Content-Language', 'en-US'); //@todo op een later moment moeten hier nog de stylesheets worden toegevoegd $this->_view->headLink()->appendStylesheet('/css/main.css'); //$this->_view->headTitle('Event Manager'); /* Set the head style. $this->_view->headTitle->headStyle(); */ $this->_view->headTitle()->setSeparator(' - '); $this->_auth = Zend_Auth::getInstance(); $navigation = new Zend_Config_Xml(APPLICATION_PATH.'/configs/navigation.xml','nav'); $navContainer = new Zend_Navigation($navigation); $this->_view->navigation($navContainer)->setAcl($this->_acl)->setRole($this->_auth->getStorage()->read()->usr_role); //THIS IS LINE 169!!!!!!!!! } /** * Add graceful error handling to the dispatch, this will handle * errors during Front Controller dispatch. */ public function run() { $errorHandling = $this->getOption('errorhandling'); try { parent::run(); } catch(Exception $e) { if (true == (bool) $errorHandling['graceful']) { $this->__handleErrors($e, $errorHandling['email']); } else { throw $e; } } } /** * Handle errors gracefully, this will work as long as the views, * and the Zend classes are available * * @param Exception $e * @param string $email */ protected function __handleErrors(Exception $e, $email) { header('HTTP/1.1 500 Internal Server Error'); $view = new Zend_View(); $view->addScriptPath(dirname(__FILE__) . '/../views/scripts'); echo $view->render('fatalError.phtml'); if ('' != $email) { $mail = new Zend_Mail(); $mail->setSubject('Fatal error in application Storefront'); $mail->addTo($email); $mail->setBodyText( $e->getFile() . "\n" . $e->getMessage() . "\n" . $e->getTraceAsString() . "\n" ); @$mail->send(); } } } I have tried to debug my code, but everyting goes well until I do somethign with the db. But I don't know what goes wrong with the db. I don't get any clear error messages. Can someone help me? Some more possible interesting data: [bootstrap] resources.db.adapter = "PDO_MYSQL" resources.db.isdefaulttableadapter = true resources.db.params.dbname = "ladosa" resources.db.params.username = "root" resources.db.params.password = "root" resources.db.params.hostname = "localhost" resources.db.params.charset = "UTF8" resources.db.params.profiler.enabled = true resources.db.params.profiler.class = Zend_Db_Profiler_Firebug Autoloadernamespaces[] = "Zend_" Autoloadernamespaces[] = "SF_" phpsettings.display_errors = 0 phpsettings.error_reporting = 8191 phpSettings.date.timezone = "Europe/Amsterdam" bootstrap.path = APPLICATION_PATH"/bootstrap/Bootstrap.php" pluginPaths.resource_ = APPLICATION_PATH"/resources" resources.frontcontroller.moduledirectory = APPLICATION_PATH"/modules" resources.frontcontroller.defaultmodule = "eventManager" resources.frontcontroller.params.prefixDefaultModule = true resources.frontcontroller.exceptions = false resources.view[] = "" resources.layout.layoutPath = APPLICATION_PATH "/layouts/scripts" resources.view.encoding = "UTF-8" resources.view.title = Rode kruis Vrijwilligers applicatie ;resources.view.helperPath.Default_View_Helper = APPLICATION_PATH "/modules/eventManager/views/helpers" resources.layout.layout = "main" [production:bootstrap] [development:bootstrap] ;resources.frontController.throwExceptions = 1 ;phpSettings.display_startup_errors=1 ;phpSettings.display_errors = 1 ;resources.frontcontroller.throwerrors = [test:production] btw. I CAN login to my database command line with the given username and password. Update: today i decided to investigate on my http request and i came to an error 500. My apache logs don't give any related information, I think. I posted the logs above. Any idea's?

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  • I can't shut down nor reboot without console

    - by jgomo3
    After update from 11.04 to 11.10 an wired conduct appears in my machine: Shutdown GUI methods (including reboot) cause only a log off, and in the login screen, shutdown nor reboot options do anything (if you wonder, reboot appears in the shutdown dialog). The only way i can reboot or shutdown is trough console sudo shutdown -h now or sudo reboot. This is OK for me, but not for the rest of the users. How to fix this? Update The syslog output when select shutdown from my desktop is: AptDaemon: INFO: Quitting due to inactivity AptDaemon: INFO: Quitting was requested CRON[5095]: (root) CMD ( [ -x /usr/lib/php5/maxlifetime ] && [ -d /var/lib/php5 ] && find /var/lib/php5/ -depth -mindepth 1 -maxdepth 1 -type f -cmin +$(/usr/lib/php5/maxlifetime) ! -execdir fuser -s {} 2>/dev/null \; -delete) CRON[5094]: (root) MAIL (mailed 1 byte of output; but got status 0x00ff, #012) kernel: [17027.614974] psmouse.c: TouchPad at isa0060/serio4/input0 lost sync at byte 1 kernel: [17027.616510] psmouse.c: TouchPad at isa0060/serio4/input0 lost sync at byte 1 kernel: [17027.618037] psmouse.c: TouchPad at isa0060/serio4/input0 lost sync at byte 1 kernel: [17027.619557] psmouse.c: TouchPad at isa0060/serio4/input0 lost sync at byte 1 kernel: [17027.621046] psmouse.c: TouchPad at isa0060/serio4/input0 lost sync at byte 1 kernel: [17027.621051] psmouse.c: issuing reconnect request acpid: client 1032[0:0] has disconnected acpid: client connected from 1032[0:0] acpid: 1 client rule loaded gnome-session[1836]: WARNING: Unable to stop system: Authorization is required acpid: client 1032[0:0] has disconnected acpid: client connected from 6055[0:0] acpid: 1 client rule loaded rtkit-daemon[1313]: Successfully made thread 6134 of process 6134 (n/a) owned by '119' high priority at nice level -11. rtkit-daemon[1313]: Supervising 4 threads of 2 processes of 2 users. rtkit-daemon[1313]: Successfully made thread 6139 of process 6134 (n/a) owned by '119' RT at priority 5. rtkit-daemon[1313]: Supervising 5 threads of 2 processes of 2 users. rtkit-daemon[1313]: Successfully made thread 6140 of process 6134 (n/a) owned by '119' RT at priority 5. rtkit-daemon[1313]: Supervising 6 threads of 2 processes of 2 users. I suspect that the line gnome-session[1836]: WARNING: Unable to stop system: Authorization is required is related to the issue. When selecting shutdown from the login screen, the output is the same from the line pointed. This is the output: gnome-session[1836]: WARNING: Unable to stop system: Authorization is required acpid: client 1032[0:0] has disconnected acpid: client connected from 6055[0:0] acpid: 1 client rule loaded rtkit-daemon[1313]: Successfully made thread 6134 of process 6134 (n/a) owned by '119' high priority at nice level -11. rtkit-daemon[1313]: Supervising 4 threads of 2 processes of 2 users. rtkit-daemon[1313]: Successfully made thread 6139 of process 6134 (n/a) owned by '119' RT at priority 5. rtkit-daemon[1313]: Supervising 5 threads of 2 processes of 2 users. rtkit-daemon[1313]: Successfully made thread 6140 of process 6134 (n/a) owned by '119' RT at priority 5. rtkit-daemon[1313]: Supervising 6 threads of 2 processes of 2 users. acpid: client 6055[0:0] has disconnected acpid: client connected from 6055[0:0] acpid: 1 client rule loaded

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  • Help with chat server

    - by mithun1538
    I am designing a chat server in java. The communication is Http based and not socket based. In the client side I have an applet. In the server side I have a servlet. Applet: I create a new thread to listen for incoming messages(GET method). The main thread is used to send messages(POST messages). The partial code is : public void start() { System.out.println("Creating new thread"); Thread thread = new Thread(this); thread.start(); } private String getNewMessage() { System.out.println("Inside getNewMessage"); String msg = null; try { while(msg == null) { System.out.println("Trying to listen to servlet"); URL servlet = new URL(getCodeBase(), "NewServlet?mode=msg"); URLConnection con = servlet.openConnection(); con.setUseCaches(false); DataInputStream din = new DataInputStream(new BufferedInputStream(con.getInputStream())); msg = din.readUTF(); System.out.println("message read :" + msg); } } catch (Exception e) { e.printStackTrace(); } return msg + "\n"; } public void run() { System.out.println("Inside new thread"); while(true) { System.out.println("inside first while"); String newMsg = getNewMessage(); chatOutput.append(newMsg); System.out.println("Appended!!"); } } private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) { String message = chatInput.getText(); chatInput.setText(""); chatOutput.append(message + "\n"); try { System.out.println("Trying to send msg :" + message); URL url = new URL(getCodeBase(), "NewServlet"); URLConnection servletConnection = url.openConnection(); servletConnection.setDoInput(true); servletConnection.setDoOutput(true); servletConnection.setUseCaches(false); servletConnection.setRequestProperty("Content-Type", "application/octet-stream"); ObjectOutputStream out = new ObjectOutputStream(servletConnection.getOutputStream()); out.writeObject(message); out.flush(); out.close(); System.out.println("Message sent!"); } catch (Exception e) { e.printStackTrace(); } } This next code is from the servlet side. it uses the Observable interface to identify and send messages to clients. public class NewServlet extends HttpServlet { // getNextMessage() returns the next new message. // It blocks until there is one. public String getNextMessage() { // Create a message sink to wait for a new message from the // message source. System.out.println("inside getNextMessage"); return new MessageSink().getNextMessage(source);} @Override protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { System.out.println("Inside Doget"); response.setContentType("text/plain"); PrintWriter out = response.getWriter(); out.println(getNextMessage()); } // broadcastMessage() informs all currently listening clients that there // is a new message. Causes all calls to getNextMessage() to unblock. public void broadcastMessage(String message) { // Send the message to all the HTTP-connected clients by giving the // message to the message source source.sendMessage(message); } @Override protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { System.out.println("Inside DoPost"); try { ObjectInputStream din= new ObjectInputStream(request.getInputStream()); String message = (String)din.readObject(); System.out.println("received msg"); if (message != null) broadcastMessage(message); System.out.println("Called broadcast"); // Set the status code to indicate there will be no response response.setStatus(response.SC_NO_CONTENT); } catch (Exception e) { e.printStackTrace(); } } /** * Returns a short description of the servlet. * @return a String containing servlet description */ @Override public String getServletInfo() { return "Short description"; } MessageSource source = new MessageSource();} class MessageSource extends Observable { public void sendMessage(String message) { System.out.println("inside sendMsg"); setChanged(); notifyObservers(message); } } class MessageSink implements Observer { String message = null; // set by update() and read by getNextMessage() // Called by the message source when it gets a new message synchronized public void update(Observable o, Object arg) { // Get the new message message = (String)arg; // Wake up our waiting thread notify(); } // Gets the next message sent out from the message source synchronized public String getNextMessage(MessageSource source) { // Tell source we want to be told about new messages source.addObserver(this); System.out.println("AddedObserver"); // Wait until our update() method receives a message while (message == null) { try { wait(); } catch (Exception ignored) { } } // Tell source to stop telling us about new messages source.deleteObserver(this); // Now return the message we received // But first set the message instance variable to null // so update() and getNextMessage() can be called again. String messageCopy = message; message = null; System.out.println("Returning msg"); return messageCopy; } } As you can see I have included System.out.println("Some message"); in some places. this was just for debugging purposes. In java console, i get the following output: Creating new thread Inside new thread. inside first while. Inside getNewMessage. Trying to listen to servlet. In the servlet side, i get the following output in the tomcat logs: Inside Doget. inside getNextMessage. AddedObserver. After i type a message in the applet, and send it, I get the foll output in java console: Trying to send msg :you deR?? Message sent! But in servlet side, I dont get anything in the logs. I used the O'Reily Java Servlet Programming as reference(The observer interface comes from there). But I am not getting any chat communication between two clients. As can be understood from the logs, the POST method is not called. Any reason for this?

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  • Tomcat running, catalina throwing exception

    - by Mark Steudel
    So I have to preface that I'm not familiar with tomcat/catalina, but trying to troubleshoot this anyway. Anyway I see in /var/log/tomcat5/catalina.out I'm seeing these errors: Using CATALINA_BASE: /usr/share/tomcat5 Using CATALINA_HOME: /usr/share/tomcat5 Using CATALINA_TMPDIR: /usr/share/tomcat5/temp Using JRE_HOME: java.lang.ClassNotFoundException: org.apache.catalina.startup.Catalina at java.net.URLClassLoader$1.run(URLClassLoader.java:202) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:190) at java.lang.ClassLoader.loadClass(ClassLoader.java:307) at java.lang.ClassLoader.loadClass(ClassLoader.java:248) at org.apache.catalina.startup.Bootstrap.init(Bootstrap.java:223) at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:410) I'm not really sure what this means. This installation was working a week ago ... did something get corrupted? How would I figure if it did ... what other information would be valuable here? Tomcat seems to be running and starting up fine ... UPDATE: this might be related: Jun 19, 2011 11:00:25 PM org.apache.coyote.http11.Http11BaseProtocol pause INFO: Pausing Coyote HTTP/1.1 on http-9080 Jun 19, 2011 11:00:26 PM org.apache.catalina.core.StandardService stop INFO: Stopping service Catalina log4j:ERROR LogMananger.repositorySelector was null likely due to error in class reloading, using NOPLoggerRepository. Some more stuff in the logs: 2011-06-12 23:04:45,223 INFO [main] [com.atlassian.confluence.lifecycle] contextInitialized Starting Confluence 3.1.1 (build #1724) 2011-06-12 23:04:45,663 INFO [main] [beans.factory.xml.XmlBeanDefinitionReader] loadBeanDefinitions Loading XML bean definitions from c lass path resource [bootstrapContext.xml] 2011-06-12 23:04:46,134 INFO [main] [beans.factory.xml.XmlBeanDefinitionReader] loadBeanDefinitions Loading XML bean definitions from c lass path resource [setupContext.xml] 2011-06-12 23:04:46,236 INFO [main] [beans.factory.xml.XmlBeanDefinitionReader] loadBeanDefinitions Loading XML bean definitions from c lass path resource [bootstrapCacheContext.xml] 2011-06-12 23:04:47,571 INFO [main] [atlassian.plugin.manager.DefaultPluginManager] init Initialising the plugin system 2011-06-12 23:04:48,338 INFO [main] [atlassian.plugin.manager.DefaultPluginManager] init Plugin system started in 0:00:00.748 Jun 12, 2011 11:05:05 PM org.apache.catalina.startup.Catalina stopServer SEVERE: Catalina.stop: java.net.ConnectException: Connection refused at java.net.PlainSocketImpl.socketConnect(Native Method) at java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:333) at java.net.PlainSocketImpl.connectToAddress(PlainSocketImpl.java:195) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:182) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:366) at java.net.Socket.connect(Socket.java:525) at java.net.Socket.connect(Socket.java:475) at java.net.Socket.<init>(Socket.java:372) at java.net.Socket.<init>(Socket.java:186) at org.apache.catalina.startup.Catalina.stopServer(Catalina.java:395) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.apache.catalina.startup.Bootstrap.stopServer(Bootstrap.java:344) at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:435) Jun 12, 2011 11:05:44 PM org.apache.catalina.core.AprLifecycleListener lifecycleEvent INFO: The Apache Tomcat Native library which allows optimal performance in production environments was not found on the java.library.pa th: /usr/java/jdk1.6.0_18/jre/lib/i386/client:/usr/java/jdk1.6.0_18/jre/lib/i386:/usr/java/jdk1.6.0_18/jre/../lib/i386:/usr/java/packag es/lib/i386:/lib:/usr/lib CLEAN LOG OUTPUT FROM STARTING TOMCAT: Using CATALINA_BASE: /usr/share/tomcat5 Using CATALINA_HOME: /usr/share/tomcat5 Using CATALINA_TMPDIR: /usr/share/tomcat5/temp Using JRE_HOME: java.lang.ClassNotFoundException: org.apache.catalina.startup.Catalina at java.net.URLClassLoader$1.run(URLClassLoader.java:202) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:190) at java.lang.ClassLoader.loadClass(ClassLoader.java:307) at java.lang.ClassLoader.loadClass(ClassLoader.java:248) at org.apache.catalina.startup.Bootstrap.init(Bootstrap.java:223) at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:410) So I did a /etc/rc.d/init.d/tomcat status and I get this: [wqadm1n@ip-72-167-51-178 proc]$ sudo /etc/rc.d/init.d/tomcat5 status /etc/rc.d/init.d/tomcat5 is stopped [wqadm1n@ip-72-167-51-178 proc]$ sudo /etc/rc.d/init.d/tomcat5 start Starting tomcat5: [ OK ] [wqadm1n@ip-72-167-51-178 proc]$ sudo /etc/rc.d/init.d/tomcat5 status lock file found but no process running for pid 30774

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  • Specifying a Postfix Instance to send outbound email

    - by Catherine Jefferson
    I have a CentOS 6.5 server running Postfix 2.6x (the default distribution) with five public IPv4 IPs bound to it. Each IP has DNS and rDNS set separately. Each uses a different hostname at a different domain. I have five Postfix instances, one bound to each IP, like this example: 192.168.34.104 red.example.com /etc/postfix 192.168.36.48 green.example.net /etc/postfix-green 192.168.36.49 pink.example.org /etc/postfix-pink 192.168.36.50 orange.example.info /etc/postfix-orange 192.168.36.51 blue.example.us /etc/postfix-blue I've tested each IP by telneting to port 25. Postfix answers and banners properly with the correct hostname. Email is received on all of these instances with no problems and is routed to the correct place. This setup, minus the final instance, has existed for a couple of years and works. I never bothered to set up outbound email to go through any but the main instance, however; there was no need. Now I need to send email from blue.example.us that actually leaves from that interface and IP, such that the Received headers show blue.example.us as the sending mailhost, so that SPF and DKIM validate, etc etc. The email that will be sent from blue.example.com is a feedback loop sent by a single shell account on the server (account5), an account that is dedicated to sending this email. The account receives the feedback loop emails from servers on other networks, saves the bodies of those emails, and then generates a new outbound email header, appends the saved body, and sends the email. It's sending by piping each email to sendmail -oi -t. We're doing it this way to mask the identities of the initial servers. The procmail script that processes these emails works correctly. However, I cannot configure this account to send email through the proper Postfix instance/IP/interface. The exact same account and script sends email through the main Postfix instance /etc/postfix without any issues. When I change MAIL_CONFIG to point to /etc/postfix-blue in either .bash_profile or the Procmail script that handles this email, though, I get this error: sendmail: fatal: User account5(###) is not allowed to submit mail I've read the manuals on Postfix.org, searched Google, and tried the suggestions in three previous answers here on ServerFault.com: Postfix - specify interface to deliver outbound mail on Postfix user is not allowed to submit mail Postfix rejects php mails I have been careful to stop and restart Postfix after each configuration change, and tested the results. Nothing has worked. The main postfix instance happily accepts outbound email from account5. The postfix-blue instance continues to reject email from account5 with the sendmail error above. As tempting as it is to blame machine hostility, I know that I must be missing something or doing something wrong. Does anybody have any suggestions as to what it might be? Please feel free to ask for further information about my setup if you need it. =-=-=-=-=-=-=-=-=-= At the request of the responder, here are main.cf and master.cf for a) the main postfix instance ("red.example.com") and b) the FBL instance ("blue.example.us") [NOTE: All parameters not specified below were left at the default Postfix 2.6 settings] MAIN: master.cf smtp inet n - n - - smtpd main.cf myhostname = red.example.com mydomain = example.com inet_interfaces = $myhostname, localhost inet_protocols = all lmtp_host_lookup = native smtp_host_lookup = native ignore_mx_lookup_error = yes mydestination = $myhostname, localhost.$mydomain, localhost local_recipient_maps = mynetworks = 192.168.34.104/32 relay_domains = example.com, example.info, example.net, example.org, example.us relayhost = [192.168.34.102] # Separate physical server, main mailserver. relay_recipient_maps = hash:/etc/postfix/relay_recipients alias_maps = hash:/etc/aliases alias_database = hash:/etc/aliases smtpd_banner = $myhostname ESMTP $mail_name multi_instance_wrapper = ${command_directory}/postmulti -p -- multi_instance_enable = yes multi_instance_directories = /etc/postfix-green /etc/postfix-pink /etc/postfix-orange /etc/postfix-blue FBL: master.cf 184.173.119.103:25 inet n - n - - smtpd main.cf myhostname = blue.example.us mydomain = blue.example.us <= Deliberately set to subdomain only. myorigin = $mydomain inet_interfaces = $myhostname lmtp_host_lookup = native smtp_host_lookup = native ignore_mx_lookup_error = yes mydestination = $myhostname local_recipient_maps = unix:passwd.byname $alias_maps $virtual_alias_maps mynetworks = 192.168.36.51/32, 192.168.35.20/31 <= Second IP is backup MX servers relay_domains = $mydestination recipient_canonical_maps = hash:/etc/postfix-blue/canonical virtual_alias_maps = hash:/etc/postfix-fbl/virtual alias_maps = hash:/etc/aliases, hash:/etc/postfix-blue/canonical alias_maps = hash:/etc/aliases, hash:/etc/postfix-blue/canonical mailbox_command = /usr/bin/procmail -a "$EXTENSION" DEFAULT=$HOME/Mail/ MAILDIR=$HOME/Mail smtpd_banner = $myhostname ESMTP $mail_name authorized_submit_users = multi_instance_name = postfix-blue multi_instance_enable = yes

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  • No Properties path set - looking in classpath

    - by Will
    For whatever reason my project has decided it cannot find my transaction.properties file. It is located in the : src/main/resource However it looks in looks in target/classes/ The file also resides yet throws the errors(see below) These all seem to stem from the whole in the init of code I have no acces to which is always fun. Anyone have any idea how to get past the whole: Using init file: /target/classes/transactions.properties com.atomikos.icatch.SysException: Error in init: Error during checkpointing at com.atomikos.icatch.imp.TransactionServiceImp.init(TransactionServiceImp.java:728) EDIT: The errors are mainly pointing at the atomikos path. I'll be honest I'm at a total loss as to what is actually happening under the hood so. It's rather melting. The two files are the same so it shouldn't really matter which file it uses, however I can view the first error line reference. public synchronized void init ( Properties properties ) throws SysException { Stack errors = new Stack (); this.properties_ = properties; try { recoverymanager_.init (); } catch ( LogException le ) { errors.push ( le ); throw new SysException ( "Error in init: " + le.getMessage (), errors ); } recoverCoordinators (); //initialized is now set in recover() //initialized_ = true; shuttingDown_ = false; control_ = new LogControlImp ( this ); // call recovery already, to make sure that the // RMI participants can start inquiring and replay recover (); notifyListeners ( true, false ); } Full error printout: Using init file: /target/classes/transactions.properties com.atomikos.icatch.SysException: Error in init: Error during checkpointing at com.atomikos.icatch.imp.TransactionServiceImp.init(TransactionServiceImp.java:728) at com.atomikos.icatch.imp.BaseTransactionManager.init(BaseTransactionManager.java:217) at com.atomikos.icatch.standalone.StandAloneTransactionManager.init(StandAloneTransactionManager.java:104) at com.atomikos.icatch.standalone.UserTransactionServiceImp.init(UserTransactionServiceImp.java:307) at com.atomikos.icatch.config.UserTransactionServiceImp.init(UserTransactionServiceImp.java:413) at com.atomikos.icatch.jta.UserTransactionManager.checkSetup(UserTransactionManager.java:90) at com.atomikos.icatch.jta.UserTransactionManager.init(UserTransactionManager.java:140) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeCustomInitMethod(AbstractAutowireCapableBeanFactory.java:1544) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1485) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1417) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:519) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456) at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:291) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:288) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:190) at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:580) at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:895) at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:425) at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:139) at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:93) at com.citi.eq.mo.dcc.server.Main.main(Main.java:32) Nested exception is: com.atomikos.persistence.LogException: Error during checkpointing at com.atomikos.persistence.imp.FileLogStream.writeCheckpoint(FileLogStream.java:229) at com.atomikos.persistence.imp.StreamObjectLog.init(StreamObjectLog.java:185) at com.atomikos.persistence.imp.StateRecoveryManagerImp.init(StateRecoveryManagerImp.java:71) at com.atomikos.icatch.imp.TransactionServiceImp.init(TransactionServiceImp.java:725) at com.atomikos.icatch.imp.BaseTransactionManager.init(BaseTransactionManager.java:217) at com.atomikos.icatch.standalone.StandAloneTransactionManager.init(StandAloneTransactionManager.java:104) at com.atomikos.icatch.standalone.UserTransactionServiceImp.init(UserTransactionServiceImp.java:307) at com.atomikos.icatch.config.UserTransactionServiceImp.init(UserTransactionServiceImp.java:413) at com.atomikos.icatch.jta.UserTransactionManager.checkSetup(UserTransactionManager.java:90) at com.atomikos.icatch.jta.UserTransactionManager.init(UserTransactionManager.java:140) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeCustomInitMethod(AbstractAutowireCapableBeanFactory.java:1544) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1485) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1417) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:519) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456) at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:291) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:288) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:190) at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:580) at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:895) at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:425) at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:139) at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:93) at com.citi.eq.mo.dcc.server.Main.main(Main.java:32) 08/05/2011 14:55:59.998 [main] [] [INFO ] [o.s.b.f.s.DefaultListableBeanFactory] Destroying singletons in org.springframework.beans.factory.support.DefaultListableBeanFactory@164dbd5: defining beans [gfiPropertyConfigurerCommon,org.springframework.context.annotation.internalConfigurationAnnotationProcessor,org.springframework.context.annotation.internalAutowiredAnnotationProcessor,org.springframework.context.annotation.internalRequiredAnnotationProcessor,org.springframework.context.annotation.internalCommonAnnotationProcessor,org.springframework.context.annotation.internalPersistenceAnnotationProcessor,ZtsListenerContainer,ztsMessageListener,dccMessageHandler,dccToRioPublisher,rioJmsTemplate,dccMessageTransformer,ztsFixtoRioTransformer,dateManager,ztsDropCopyConverterContextFactory,ZtsBlockListenerContainer,ztsblockdropCopyConverterContextFactory,ZasListenerContainer,zasMessageListener,zastoRIOMessageTransformer,zasDropCopyConverterContextFactory,ztsToDccJndiTemplate,ztsQcf,ztsBlockToDccJndiTemplate,ztsBlockQcf,zasToDccJndiTemplate,zasQcf,rioJndiTemplate,rioTcf,rioDestinationResolver,URO.ZTSTRADES.1_Producer,mbeanServer,jmxExporter,rules-execution-server-engine,rio-object,trade-validator-context,trade-validator,validation-rules-helper,javaxTransactionManager,javaxUserTransaction,springPlatformTransactionManager,org.springframework.aop.config.internalAutoProxyCreator,org.springframework.transaction.annotation.AnnotationTransactionAttributeSource#0,org.springframework.transaction.interceptor.TransactionInterceptor#0,org.springframework.transaction.config.internalTransactionAdvisor,org.springframework.scheduling.annotation.internalAsyncAnnotationProcessor,org.springframework.scheduling.annotation.internalScheduledAnnotationProcessor]; root of factory hierarchy 08/05/2011 14:56:00.013 [main] [] [INFO ] [o.s.jmx.export.MBeanExporter] Unregistering JMX-exposed beans on shutdown Exception in thread "main" org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'javaxTransactionManager' defined in class path resource [eq-mo-dcc-server-context.xml]: Invocation of init method failed; nested exception is com.atomikos.icatch.SysException: Error in init(): Error in init: Error during checkpointing at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1420) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:519) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456) at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:291) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:288) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:190) at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:580) at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:895) at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:425) at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:139) at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:93) at com.citi.eq.mo.dcc.server.Main.main(Main.java:32) Caused by: com.atomikos.icatch.SysException: Error in init(): Error in init: Error during checkpointing at com.atomikos.icatch.standalone.UserTransactionServiceImp.init(UserTransactionServiceImp.java:374) at com.atomikos.icatch.config.UserTransactionServiceImp.init(UserTransactionServiceImp.java:413) at com.atomikos.icatch.jta.UserTransactionManager.checkSetup(UserTransactionManager.java:90) at com.atomikos.icatch.jta.UserTransactionManager.init(UserTransactionManager.java:140) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeCustomInitMethod(AbstractAutowireCapableBeanFactory.java:1544) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1485) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1417) ... 12 more Caused by: com.atomikos.icatch.SysException: Error in init: Error during checkpointing at com.atomikos.icatch.imp.TransactionServiceImp.init(TransactionServiceImp.java:728) at com.atomikos.icatch.imp.BaseTransactionManager.init(BaseTransactionManager.java:217) at com.atomikos.icatch.standalone.StandAloneTransactionManager.init(StandAloneTransactionManager.java:104) at com.atomikos.icatch.standalone.UserTransactionServiceImp.init(UserTransactionServiceImp.java:307) ... 22 more

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  • Why can't Perl's DBD::DB2 find dbivport.h during installation?

    - by Liju Mathew
    We are using a Perl utility to dump data from DB2 database. We installed DBI package and it is asking for DBD package also. We dont have root access and when we try to install DBD package we are getting the following error: ERROR BUILDING DB2.pm [lijumathew@intblade03 DBD-DB2-1.78]$ make make[1]: Entering directory '/home/lijumathew/lperl/perlsrc/DBD-DB2-1.78/Constants' gcc -c -I"/db2/db2tf1/sqllib/include" -D_REENTRANT -D_GNU_SOURCE -DDEBUGGING -fno-strict-aliasing -pipe -I/usr/local/include -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -I/usr/include/gdbm -O2 -g -pipe -m32 -march=i386 -mtune=pentium4 -DVERSION=\"1.78\" -DXS_VERSION=\"1.78\" -fPIC "-I/usr/lib/perl5/5.8.5/i386-linux-thread-multi/CORE" Constants.c Running Mkbootstrap for DBD::DB2::Constants () chmod 644 Constants.bs rm -f ../blib/arch/auto/DBD/DB2/Constants/Constants.so gcc -shared -L/usr/local/lib Constants.o -o ../blib/arch/auto/DBD/DB2/Constants/Constants.so chmod 755 ../blib/arch/auto/DBD/DB2/Constants/Constants.so cp Constants.bs ../blib/arch/auto/DBD/DB2/Constants/Constants.bs chmod 644 ../blib/arch/auto/DBD/DB2/Constants/Constants.bs make[1]: Leaving directory `/home/lijumathew/lperl/perlsrc/DBD-DB2-1.78/Constants' gcc -c -I"/db2/db2tf1/sqllib/include" -I"/usr/lib/perl5/site_perl/5.8.5/i386-linux-thread-multi/auto/DBI" -I"/usr/lib/perl5/5.8.5/i386-linux-thread-multi/auto/DBI" -I"/usr/lib/perl5/vendor_perl/5.8.5/i386-linux-thread-multi/auto/DBI" -I"/usr/lib/perl5/site_perl/5.8.5/i386-linux-thread-multi/auto/DBI" -D_REENTRANT -D_GNU_SOURCE -DDEBUGGING -fno-strict-aliasing -pipe -I/usr/local/include -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -I/usr/include/gdbm -O2 -g -pipe -m32 -march=i386 -mtune=pentium4 -DVERSION=\"1.78\" -DXS_VERSION=\"1.78\" -fPIC "-I/usr/lib/perl5/5.8.5/i386-linux-thread-multi/CORE" DB2.c In file included from DB2.h:22, from DB2.xs:7: dbdimp.h:10:22: dbivport.h: No such file or directory make: *** [DB2.o] Error 1 How do we fix this? Do we need root access to resolve this?

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  • ASP.NET Setting Culture with InitializeCulture

    - by Helen
    I have a website with three domains .com, .de and .it Each domain needs to default to the local language/culture of the country. I have created a base page and added an InitializeCulture Protected Overrides Sub InitializeCulture() Dim url As System.Uri = Request.Url Dim hostname As String = url.Host.ToString() Dim SelectedLanguage As String If HttpContext.Current.Profile("PreferredCulture").ToString Is Nothing Then Select Case hostname Case "www.domain.de" SelectedLanguage = "de" Thread.CurrentThread.CurrentUICulture = New CultureInfo(SelectedLanguage) Thread.CurrentThread.CurrentCulture = CultureInfo.CreateSpecificCulture(SelectedLanguage) Case "www.domain.it" SelectedLanguage = "it" Thread.CurrentThread.CurrentUICulture = New CultureInfo(SelectedLanguage) Thread.CurrentThread.CurrentCulture = CultureInfo.CreateSpecificCulture(SelectedLanguage) Case Else SelectedLanguage = "en" Thread.CurrentThread.CurrentUICulture = New CultureInfo(SelectedLanguage) Thread.CurrentThread.CurrentCulture = CultureInfo.CreateSpecificCulture(SelectedLanguage) End Select End If End Sub This is fine. The problem now occurs because we also want three language selection buttons on the home page so that the user can override the domain language. So on my Default.asp.vb we have three button events like this... Protected Sub langEnglish_Click(ByVal sender As Object, ByVal e As System.Web.UI.ImageClickEventArgs) Handles langEnglish.Click Dim SelectedLanguage As String = "en" 'Save selected user language in profile HttpContext.Current.Profile.SetPropertyValue("PreferredCulture", SelectedLanguage) 'Force re-initialization of the page to fire InitializeCulture() Context.Server.Transfer(Context.Request.Path) End Sub But of course the InititalizeCulture then overrides whatever button selection has been made. Is there any way that the InitialCulture can check whether a button click has occurred and if so skip the routine? Any advice would be greatly appreciated, thanks.

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  • DBI::DBD package not getting installed for Perl?

    - by Liju Mathew
    Hi, We are using a Perl utility to dump data from DB2 database. We installed DBI package and it is asking for DBD package also. We dont have root access and when we try to install DBD package we are getting the following error. ERROR BUILDING DB2.pm [lijumathew@intblade03 DBD-DB2-1.78]$ make make[1]: Entering directory '/home/lijumathew/lperl/perlsrc/DBD-DB2-1.78/Constants' gcc -c -I"/db2/db2tf1/sqllib/include" -D_REENTRANT -D_GNU_SOURCE -DDEBUGGING -fno-strict-aliasing -pipe -I/usr/local/include -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -I/usr/include/gdbm -O2 -g -pipe -m32 -march=i386 -mtune=pentium4 -DVERSION=\"1.78\" -DXS_VERSION=\"1.78\" -fPIC "-I/usr/lib/perl5/5.8.5/i386-linux-thread-multi/CORE" Constants.c Running Mkbootstrap for DBD::DB2::Constants () chmod 644 Constants.bs rm -f ../blib/arch/auto/DBD/DB2/Constants/Constants.so gcc -shared -L/usr/local/lib Constants.o -o ../blib/arch/auto/DBD/DB2/Constants/Constants.so chmod 755 ../blib/arch/auto/DBD/DB2/Constants/Constants.so cp Constants.bs ../blib/arch/auto/DBD/DB2/Constants/Constants.bs chmod 644 ../blib/arch/auto/DBD/DB2/Constants/Constants.bs make[1]: Leaving directory `/home/lijumathew/lperl/perlsrc/DBD-DB2-1.78/Constants' gcc -c -I"/db2/db2tf1/sqllib/include" -I"/usr/lib/perl5/site_perl/5.8.5/i386-linux-thread-multi/auto/DBI" -I"/usr/lib/perl5/5.8.5/i386-linux-thread-multi/auto/DBI" -I"/usr/lib/perl5/vendor_perl/5.8.5/i386-linux-thread-multi/auto/DBI" -I"/usr/lib/perl5/site_perl/5.8.5/i386-linux-thread-multi/auto/DBI" -D_REENTRANT -D_GNU_SOURCE -DDEBUGGING -fno-strict-aliasing -pipe -I/usr/local/include -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -I/usr/include/gdbm -O2 -g -pipe -m32 -march=i386 -mtune=pentium4 -DVERSION=\"1.78\" -DXS_VERSION=\"1.78\" -fPIC "-I/usr/lib/perl5/5.8.5/i386-linux-thread-multi/CORE" DB2.c In file included from DB2.h:22, from DB2.xs:7: dbdimp.h:10:22: dbivport.h: No such file or directory make: *** [DB2.o] Error 1 How to fix this? Do we need root access to resolve this? Appreciate the help in advance. Thanks, Mathew Liju

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  • Sync Vs. Async Sockets Performance in C#

    - by Michael Covelli
    Everything that I read about sockets in .NET says that the asynchronous pattern gives better performance (especially with the new SocketAsyncEventArgs which saves on the allocation). I think this makes sense if we're talking about a server with many client connections where its not possible to allocate one thread per connection. Then I can see the advantage of using the ThreadPool threads and getting async callbacks on them. But in my app, I'm the client and I just need to listen to one server sending market tick data over one tcp connection. Right now, I create a single thread, set the priority to Highest, and call Socket.Receive() with it. My thread blocks on this call and wakes up once new data arrives. If I were to switch this to an async pattern so that I get a callback when there's new data, I see two issues The threadpool threads will have default priority so it seems they will be strictly worse than my own thread which has Highest priority. I'll still have to send everything through a single thread at some point. Say that I get N callbacks at almost the same time on N different threadpool threads notifying me that there's new data. The N byte arrays that they deliver can't be processed on the threadpool threads because there's no guarantee that they represent N unique market data messages because TCP is stream based. I'll have to lock and put the bytes into an array anyway and signal some other thread that can process what's in the array. So I'm not sure what having N threadpool threads is buying me. Am I thinking about this wrong? Is there a reason to use the Async patter in my specific case of one client connected to one server?

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  • Can I tell Castle Windsor to create a component in a separate AppDomain?

    - by Michael L Perry
    I've created a multi-threaded service that uses Castle Windsor to create components to run on separate threads. I Resolve an component by name with parameters for each thread. I'm running into concurrency problems with a 3rd party library used by the components. I suspect that isolating those components in separate AppDomains will resolve the problem. Is there a way to have Resolve create the component using a different AppDomain? private ActivityThread NewActivityThread(ActivityInstance activityInstance) { // Set up the creation arguments. System.Collections.IDictionary arguments = new Dictionary<string, string>(); activityInstance.Parameters.ForEach(p => arguments.Add(p.Name, p.Value)); // Get the activity handler from the container. IActivity activity = Program.Container.Resolve<IActivity>(activityInstance.Name, arguments); // Create a thread for the activity. ActivityThread thread = new ActivityThread(activity, activityInstance, _nextActivityID++); return thread; } public ActivityThread(IActivity activity, ActivityInstance instance, int id) { _activity = activity; _instance = instance; _id = id; } public void Start() { if (_thread == null) { // Create a new thread to run this activity. _thread = new Thread(delegate() { _activity.Run(); }); _thread.Name = _activity.ToString(); _thread.SetApartmentState(ApartmentState.STA); _thread.Start(); } }

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  • Do the ‘up to date’ guarantees for values of Java's final fields extend to indirect references?

    - by mattbh
    The Java language spec defines semantics of final fields in section 17.5: The usage model for final fields is a simple one. Set the final fields for an object in that object's constructor. Do not write a reference to the object being constructed in a place where another thread can see it before the object's constructor is finished. If this is followed, then when the object is seen by another thread, that thread will always see the correctly constructed version of that object's final fields. It will also see versions of any object or array referenced by those final fields that are at least as up-to-date as the final fields are. My question is - does the 'up-to-date' guarantee extend to the contents of nested arrays, and nested objects? An example scenario: Thread A constructs a HashMap of ArrayLists, then assigns the HashMap to final field 'myFinal' in an instance of class 'MyClass' Thread B sees a (non-synchronized) reference to the MyClass instance and reads 'myFinal', and accesses and reads the contents of one of the ArrayLists In this scenario, are the members of the ArrayList as seen by Thread B guaranteed to be at least as up to date as they were when MyClass's constructor completed? I'm looking for clarification of the semantics of the Java Memory Model and language spec, rather than alternative solutions like synchronization. My dream answer would be a yes or no, with a reference to the relevant text.

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  • boost bind callback function pointer as a parameter

    - by Takashi-kun
    I am trying to pass a function pointer using boost::bind. void Class::ThreadFunction(Type(*callbackFunc)(message_type::ptr&)) { } boost::shared_ptr<boost::thread> Class::Init(Type(*callbackFunc)(message_type::ptr&)) { return boost::shared_ptr<boost::thread> ( new boost::thread(boost::bind(&Class::ThreadFunction, callbackFunc)) ); } I get the following errors: 1>C:\dev\sapphire\boost_1_46_1\boost/bind/mem_fn.hpp(362) : warning C4180: qualifier applied to function type has no meaning; ignored 1>C:\dev\sapphire\boost_1_46_1\boost/bind/mem_fn.hpp(333) : error C2296: '->*' : illegal, left operand has type 'Type (__cdecl **)(message_type::ptr &)' However, I was able to change to the following, it works fine: void ThreadFunction(Type(*callbackFunc)(message_type::ptr&)) { } boost::shared_ptr<boost::thread> Class::Init(Type(*callbackFunc)(message_type::ptr&)) { return boost::shared_ptr<boost::thread> ( new boost::thread(boost::bind(&ThreadFunction, callbackFunc)) ); } Why do I get those errors if I declare the method in the Class class?

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  • POSIX AIO Library and Callback Handlers

    - by Charles Salvia
    According to the documentation on aio_read/write, there are basically 2 ways that the AIO library can inform your application that an async file I/O operation has completed. Either 1) you can use a signal, 2) you can use a callback function I think that callback functions are vastly preferable to signals, and would probably be much easier to integrate into higher-level multi-threaded libraries. Unfortunately, the documentation for this functionality is a mess to say the least. Some sources, such as the man page for the sigevent struct, indicate that you need to set the sigev_notify data member in the sigevent struct to SIGEV_CALLBACK and then provide a function handler. Presumably, the handler is invoked in the same thread. Other documentation indicates you need to set sigev_notify to SIGEV_THREAD, which will invoke the callback handler in a newly created thread. In any case, on my Linux system (Ubuntu with a 2.6.28 kernel) SIGEV_CALLBACK doesn't seem to be defined anywhere, but SIGEV_THREAD works as advertised. Unfortunately, creating a new thread to invoke the callback handler seems really inefficient, especially if you need to invoke many handlers. It would be better to use an existing pool of threads, similar to the way most network I/O event demultiplexers work. Some versions of UNIX, such as QNX, include a SIGEV_SIGNAL_THREAD flag, which allows you to invoke handlers using a specified existing thread, but this doesn't seem to be available on Linux, nor does it seem to even be a part of the POSIX standard. So, is it possible to use the POSIX AIO library in a way that invokes user handlers in a pre-allocated background thread/threadpool, rather than creating/destroying a new thread everytime a handler is invoked?

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  • NPTL Default Stack Size Problem

    - by eyazici
    Hello, I am developing a multithread modular application using C programming language and NPTL 2.6. For each plugin, a POSIX thread is created. The problem is each thread has its own stack area, since default stack size depends on user's choice, this may results in huge memory consumption in some cases. To prevent unnecessary memory usage I used something similar to this to change stack size before creating each thread: pthread_attr_t attr; pthread_attr_init (&attr); pthread_attr_getstacksize(&attr, &st1); if(pthread_attr_setstacksize (&attr, MODULE_THREAD_SIZE) != 0) perror("Stack ERR"); pthread_attr_getstacksize(&attr, &st2); printf("OLD:%d, NEW:%d - MIN: %d\n", st1, st2, PTHREAD_STACK_MIN); pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED); /* "this" is static data structure that stores plugin related data */ pthread_create(&this->runner, &attr, (void *)(void *)this->run, NULL); EDIT I: pthread_create() section added. This did not work work as I expected, the stack size reported by pthread_attr_getstacksize() is changed but total memory usage of the application (from ps/top/pmap output) did not changed: OLD:10485760, NEW:65536 - MIN: 16384 When I use ulimit -s MY_STACK_SIZE_LIMIT before starting application I achieve the expected result. My questions are: 1-) Is there any portable(between UNIX variants) way to change (default)thread stack size after starting application(before creating thread of course)? 2-) Is it possible to use same stack area for every thread? 3-) Is it possible completely disable stack for threads without much pain?

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  • C# Communication between threads.

    - by GT
    Hi, I am using .NET 3.5 and am trying to wrap my head around a problem (not being a supreme threading expert bear with me). I have a windows service which has a very intensive process that is always running, I have put this process onto a separate thread so that the main thread of my service can handle operational tasks - i.e., service audit cycles, handling configuration changes, etc, etc. I'm starting the thread via the typical ThreadStart to a method which kicks the process off - call it workerthread. On this workerthread I am sending data to another server, as is expected the server reboots every now and again and connection is lost and I need to re-establish the connection (I am notified by the lost of connection via an event). From here I do my reconnect logic and I am back in and running, however what I easily started to notice to happen was that I was creating this worker thread over and over again each time (not what I want). Now I could kill the workerthread when I lose the connection and start a new one but this seems like a waste of resources. What I really want to do, is marshal the call (i.e., my thread start method) back to the thread that is still in memory although not doing anything. Please post any examples or docs you have that would be of use. Thanks.

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  • WPF: UnauthorizedAccessException using anonymous methods.

    - by Diego Pacheco Pedemonte
    Here is the thing, I want to create a simply app that copy many files from one site, and move them to another; but using async methods and create a new thread. private void button3_Click(object sender, RoutedEventArgs e) { //progressBar1.Maximum = _FileInfoArray.Count; DispatcherTimer dt1 = new DispatcherTimer(); foreach (FileInfo Fi in _FileInfoArray) { Thread t = new Thread(new ThreadStart(delegate() { DispatcherOperation _dispOp = progressBar1.Dispatcher.BeginInvoke(DispatcherPriority.Loaded, new Action(delegate() { File.Copy(txtdestino.Text, Fi.FullName, true); //progressBar1.Value = n; //txtstatus.Content = ("Copiados " + n.ToString() + " archivos"); //Thread.Sleep(100); } )); _dispOp.Completed += new EventHandler(_dispOp_Completed); } )); t.Start(); } } UnauthorizedAccessException is throw! It says that I can't access to txtdestino content. Some clues? -------------------------------------------------------------------------------Edited This is the version with all the changes, get the same error :( any clues? private void button4_Click(object sender, RoutedEventArgs e) { //First: Build mynames List<string> mynames = new List<string>(); foreach (FileInfo fi in _FileInfoArray) { mynames.Add(fi.FullName); } Thread t = new Thread(new ThreadStart(delegate() { foreach (string fullname in mynames) { DispatcherOperation _dispOp = progressBar1.Dispatcher.BeginInvoke(DispatcherPriority.Loaded, new Action(delegate() { string destino = System.IO.Path.Combine(@"C:\", System.IO.Path.GetFileName(fullname)); File.Copy(fullname, destino, true); //Some progressbar changes } )); _dispOp.Completed += new EventHandler(_dispOp_Completed); } } )); t.Start(); } File.Copy(txtdestino.Text, Fi.FullName, true); // here the exception is throw

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  • Calculate time of method execution and send to WCF service async

    - by Tim
    I need to implement time calculation for repository methods in my asp .net mvc project classes. The problem is that i need to send time calculation data to WCF Service which is time consuming. I think about threads which can help to cal WCF service asynchronously. But I have very little experience with it. Do I need to create new thread each time or I can create a global thread, if so then how? I have something like that: StopWatch class public class StopWatch { private DateTime _startTime; private DateTime _endTime; public void Start() { _startTime = DateTime.Now; } protected void StopTimerAndWriteStatistics() { _endTime = DateTime.Now; TimeSpan timeResult = _endTime - _startTime; //WCF proxy object var reporting = AppServerUtility.GetProxy<IReporting>(); //Send data to server reporting.WriteStatistics(_startTime, _endTime, timeResult, "some information"); } public void Stop() { //Here is the thread I have question with var thread = new Thread(StopTimerAndWriteStatistics); thread.Start(); } } Using of StopWatch class in Repository public class SomeRepository { public List<ObjectInfo> List() { StopWatch sw = new StopWatch(); sw.Start(); //performing long time operation sw.Stop(); } } What am I doing wrong with threads?

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  • Java Memory Model: reordering and concurrent locks

    - by Steffen Heil
    Hi The java meomry model mandates that synchronize blocks that synchronize on the same monitor enforce a before-after-realtion on the variables modified within those blocks. Example: // in thread A synchronized( lock ) { x = true; } // in thread B synchronized( lock ) { System.out.println( x ); } In this case it is garanteed that thread B will see x==true as long as thread A already passed that synchronized-block. Now I am in the process to rewrite lots of code to use the more flexible (and said to be faster) locks in java.util.concurrent, especially the ReentrantReadWriteLock. So the example looks like this: // in thread A synchronized( lock ) { lock.writeLock().lock(); x = true; lock.writeLock().unlock(); } // in thread B synchronized( lock ) { lock.readLock().lock(); System.out.println( x ); lock.readLock().unlock(); } However, I have not seen any hints within the memory model specification that such locks also imply the nessessary ordering. Looking into the implementation it seems to rely on the access to volatile variables inside AbstractQueuedSynchronizer (for the sun implementation at least). However this is not part of any specification and moreover access to non-volatile variables is not really condsidered covered by the memory barrier given by these variables, is it? So, here are my questions: Is it safe to assume the same ordering as with the "old" synchronized blocks? Is this documented somewhere? Is accessing any volatile variable a memory barrier for any other variable? Regards, Steffen

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  • best practice for directory polling

    - by Hieu Lam
    Hi all, I have to do batch processing to automate business process. I have to poll directory at regular interval to detect new files and do processing. While old files is being processed, new files can come in. For now, I use quartz scheduler and thread synchronization to ensure that only one thread can process files. Part of the code are: application-context.xml <bean id="methodInvokingJob" class="org.springframework.scheduling.quartz.MethodInvokingJobDetailFactoryBean" <property name="targetObject" ref="documentProcessor" / <property name="targetMethod" value="processDocuments" / </bean DocumentProcessor ..... public void processDocuments() { LOG.info(Thread.currentThread().getName() + " attempt to run."); if (!processing) { synchronized (this) { try { processing = true; LOG.info(Thread.currentThread().getName() + " is processing"); List xmlDocuments = documentManager.getFileNamesFromFolder(incomingFolderPath); // loop over the files and processed unlock files. for (String xmlDocument : xmlDocuments) { processDocument(xmlDocument); } } finally { processing = false; } } } } For the current code, I have to prevent other thread to process files when one thread is processing. Is that a good idea ? or we support multi-threaded processing. In that case how can I know which files is being process and which files has just arrived ? Any idea is really appreciated.

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  • Java: does the EDT restart or not when an exception is thrown?

    - by NoozNooz42
    (the example code below is self-contained and runnable, you can try it, it won't crash your system :) Tom Hawtin commented on the question here: http://stackoverflow.com/questions/3018165 that: It's unlikely that the EDT would crash. Unchecked exceptions thrown in EDT dispatch are caught, dumped and the thread goes on. Can someone explain me what is going on here (every time you click on the "throw an unchecked exception" button, a divide by zero is performed, on purpose): import javax.swing.*; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.awt.event.WindowAdapter; import java.awt.event.WindowEvent; public class CrashEDT extends JFrame { public static void main(String[] args) { final CrashEDT frame = new CrashEDT(); frame.addWindowListener(new WindowAdapter() { public void windowClosing( WindowEvent e) { System.exit(0); } }); final JButton jb = new JButton( "throw an unchecked exception" ); jb.addActionListener( new ActionListener() { public void actionPerformed( ActionEvent e ) { System.out.println( "Thread ID:" + Thread.currentThread().getId() ); System.out.println( 0 / Math.abs(0) ); } } ); frame.add( jb ); frame.setSize(300, 150); frame.setVisible(true); } } I get the following message (which is what I'd expect): Exception in thread "AWT-EventQueue-0" java.lang.ArithmeticException: / by zero and to me this is an unchecked exception right? You can see that the thread ID is getting incremented every time you trigger the crash. So is the EDT automatically restarted every time an unchecked exception is thrown or are unchecked exceptions "caught, dumped and the thread goes on" like Tom Hawtin commented? What is going on here?

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  • LWUIT Deadlock (lwuit dialog VS System dialog)

    - by Ramps
    Hi, I have a deadlock problem when I try to make some I/O operations that needs user permission. When user click the button I start a new thread which is responsible for performing IO operations, and I display lwuit "please wait" dialog. Dialog is dismissed by IO thread from callback method. Problem is that, when system dialog appears (asking for user permission ) on top of lwuit dialog - deadlock occurs. I assume that this is because dialog.show() method blocks main thread (EDT), so it's impossible to dismiss system dialog, when lwuit dialog is behind it. Anyone managed to solve this problem? Here is the simplified code, hope it is clear enough: protected void actionPerformed(ActionEvent evt, int id) { switch (id) { case ID_FRIEND: MyRunnableWithIoOperation r = new MyRunnableWithIoOperation(this); new Thread(r).start(); //run the thread performing IO operations Command cmd = mWaitDialog.showDialog(); // show the "please wait" dialog ...//handle cancel }//end switch } /* method called from MyRunnableWithIoOperation, when operation finished*/ public void myCallbackMethod(){ mWaitDialog.dispose(); // } I tried to start my IO thread by calling Display.getInstance().invokeAndBlock( r ), but with no luck. In such case, my "wait dialog" doesn't show up.

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  • Syncronization Exception

    - by Kurru
    Hi I have two threads, one thread processes a queue and the other thread adds stuff into the queue. I want to put the queue processing thread to sleep when its finished processing the queue I want to have the 2nd thread tell it to wake up when it has added an item to the queue However these functions call System.Threading.SynchronizationLockException: Object synchronization method was called from an unsynchronized block of code on the Monitor.PulseAll(waiting); call, because I havent syncronized the function with the waiting object. [which I dont want to do, i want to be able to process while adding items to the queue]. How can I achieve this? Queue<object> items = new Queue<object>(); object waiting = new object(); 1st Thread public void ProcessQueue() { while (true) { if (items.Count == 0) Monitor.Wait(waiting); object real = null; lock(items) { object item = items.Dequeue(); real = item; } if(real == null) continue; .. bla bla bla } } 2nd Thread involves public void AddItem(object o) { ... bla bla bla lock(items) { items.Enqueue(o); } Monitor.PulseAll(waiting); }

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  • Seeking help with a MT design pattern

    - by SamG
    I have a queue of 1000 work items and a n-proc machine (assume n = 4).The main thread spawns n (=4) worker threads at a time ( 25 outer iterations) and waits for all threads to complete before processing the next n (=4) items until the entire queue is processed for(i= 0 to queue.Length / numprocs) for(j= 0 to numprocs) { CreateThread(WorkerThread,WorkItem) } WaitForMultipleObjects(threadHandle[]) The work done by each (worker) thread is not homogeneous.Therefore in 1 batch (of n) if thread 1 spends 1000 s doing work and rest of the 3 threads only 1 s , above design is inefficient,becaue after 1 sec other 3 processors are idling. Besides there is no pooling - 1000 distinct threads are being created How do I use the NT thread pool (I am not familiar enough- hence the long winded question) and QueueUserWorkitem to achieve the above. The following constraints should hold The main thread requires that all worker items are processed before it can proceed.So I would think that a waitall like construct above is required I want to create as many threads as processors (ie not 1000 threads at a time) Also I dont want to create 1000 distinct events, pass to the worker thread, and wait on all events using the QueueUserWorkitem API or otherwise Exisitng code is in C++.Prefer C++ because I dont know c# I suspect that the above is a very common pattern and was looking for input from you folks.

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