jdk8-mips64-public/hotspot: src/share/vm/services/diagnosticFramework.cpp@f42c10a3d4b1 (annotated)

src/share/vm/services/diagnosticFramework.cpp@f42c10a3d4b1 (annotated)

src/share/vm/services/diagnosticFramework.cpp

Mon, 31 Mar 2014 13:09:35 -0700

author: minqi
date: Mon, 31 Mar 2014 13:09:35 -0700
changeset 6535: f42c10a3d4b1
parent 5047: 31a4e55f8c9d
child 6680: 78bbf4d43a14
permissions: -rw-r--r--

7090324: gclog rotation via external tool
Summary: GC log rotation can be set via java command line, but customer sometime need to sync with OS level rotation setting.
Reviewed-by: sla, minqi, ehelin
Contributed-by: suenaga.yasumasa@lab.ntt.co.jp

 /*
  * Copyright (c) 2011, 2013, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License version 2 only, as
  * published by the Free Software Foundation.
  *
  * This code is distributed in the hope that it will be useful, but WITHOUT
  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  * version 2 for more details (a copy is included in the LICENSE file that
  * accompanied this code).
  *
  * You should have received a copy of the GNU General Public License version
  * 2 along with this work; if not, write to the Free Software Foundation,
  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  *
  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  * or visit www.oracle.com if you need additional information or have any
  * questions.
  *
  */
 #include "precompiled.hpp"
 #include "memory/oopFactory.hpp"
 #include "runtime/javaCalls.hpp"
 #include "runtime/mutexLocker.hpp"
 #include "services/diagnosticArgument.hpp"
 #include "services/diagnosticFramework.hpp"
 #include "services/management.hpp"
 CmdLine::CmdLine(const char* line, size_t len, bool no_command_name) {
   assert(line != NULL, "Command line string should not be NULL");
   const char* line_end;
   const char* cmd_end;
   _cmd = line;
   line_end = &line[len];
   // Skip whitespace in the beginning of the line.
   while (_cmd < line_end && isspace((int) _cmd[0])) {
     _cmd++;
   }
   cmd_end = _cmd;
   if (no_command_name) {
     _cmd = NULL;
     _cmd_len = 0;
   } else {
     // Look for end of the command name
     while (cmd_end < line_end && !isspace((int) cmd_end[0])) {
       cmd_end++;
     }
     _cmd_len = cmd_end - _cmd;
   }
   _args = cmd_end;
   _args_len = line_end - _args;
 }
 bool DCmdArgIter::next(TRAPS) {
   if (_len == 0) return false;
   // skipping spaces
   while (_cursor < _len - 1 && _buffer[_cursor] == _delim) {
     _cursor++;
   }
   // handling end of command line
   if (_cursor >= _len - 1) {
     _cursor = _len - 1;
     _key_addr = &_buffer[_len - 1];
     _key_len = 0;
     _value_addr = &_buffer[_len - 1];
     _value_len = 0;
     return false;
   }
   // extracting first item, argument or option name
   _key_addr = &_buffer[_cursor];
   bool arg_had_quotes = false;
   while (_cursor <= _len - 1 && _buffer[_cursor] != '=' && _buffer[_cursor] != _delim) {
     // argument can be surrounded by single or double quotes
     if (_buffer[_cursor] == '\"' || _buffer[_cursor] == '\'') {
       _key_addr++;
       char quote = _buffer[_cursor];
       arg_had_quotes = true;
       while (_cursor < _len - 1) {
         _cursor++;
         if (_buffer[_cursor] == quote && _buffer[_cursor - 1] != '\\') {
           break;
         }
       }
       if (_buffer[_cursor] != quote) {
         THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(),
                 "Format error in diagnostic command arguments", false);
       }
       break;
     }
     _cursor++;
   }
   _key_len = &_buffer[_cursor] - _key_addr;
   if (arg_had_quotes) {
     // if the argument was quoted, we need to step past the last quote here
     _cursor++;
   }
   // check if the argument has the <key>=<value> format
   if (_cursor <= _len -1 && _buffer[_cursor] == '=') {
     _cursor++;
     _value_addr = &_buffer[_cursor];
     bool value_had_quotes = false;
     // extract the value
     while (_cursor <= _len - 1 && _buffer[_cursor] != _delim) {
       // value can be surrounded by simple or double quotes
       if (_buffer[_cursor] == '\"' || _buffer[_cursor] == '\'') {
         _value_addr++;
         char quote = _buffer[_cursor];
         value_had_quotes = true;
         while (_cursor < _len - 1) {
           _cursor++;
           if (_buffer[_cursor] == quote && _buffer[_cursor - 1] != '\\') {
             break;
           }
         }
         if (_buffer[_cursor] != quote) {
           THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(),
                   "Format error in diagnostic command arguments", false);
         }
         break;
       }
       _cursor++;
     }
     _value_len = &_buffer[_cursor] - _value_addr;
     if (value_had_quotes) {
       // if the value was quoted, we need to step past the last quote here
       _cursor++;
     }
   } else {
     _value_addr = NULL;
     _value_len = 0;
   }
   return _key_len != 0;
 }
 bool DCmdInfo::by_name(void* cmd_name, DCmdInfo* info) {
   if (info == NULL) return false;
   return strcmp((const char*)cmd_name, info->name()) == 0;
 }
 void DCmdParser::add_dcmd_option(GenDCmdArgument* arg) {
   assert(arg != NULL, "Sanity");
   if (_options == NULL) {
     _options = arg;
   } else {
     GenDCmdArgument* o = _options;
     while (o->next() != NULL) {
       o = o->next();
     }
     o->set_next(arg);
   }
   arg->set_next(NULL);
   Thread* THREAD = Thread::current();
   arg->init_value(THREAD);
   if (HAS_PENDING_EXCEPTION) {
     fatal("Initialization must be successful");
   }
 }
 void DCmdParser::add_dcmd_argument(GenDCmdArgument* arg) {
   assert(arg != NULL, "Sanity");
   if (_arguments_list == NULL) {
     _arguments_list = arg;
   } else {
     GenDCmdArgument* a = _arguments_list;
     while (a->next() != NULL) {
       a = a->next();
     }
     a->set_next(arg);
   }
   arg->set_next(NULL);
   Thread* THREAD = Thread::current();
   arg->init_value(THREAD);
   if (HAS_PENDING_EXCEPTION) {
     fatal("Initialization must be successful");
   }
 }
 void DCmdParser::parse(CmdLine* line, char delim, TRAPS) {
   GenDCmdArgument* next_argument = _arguments_list;
   DCmdArgIter iter(line->args_addr(), line->args_len(), delim);
   bool cont = iter.next(CHECK);
   while (cont) {
     GenDCmdArgument* arg = lookup_dcmd_option(iter.key_addr(),
             iter.key_length());
     if (arg != NULL) {
       arg->read_value(iter.value_addr(), iter.value_length(), CHECK);
     } else {
       if (next_argument != NULL) {
         arg = next_argument;
         arg->read_value(iter.key_addr(), iter.key_length(), CHECK);
         next_argument = next_argument->next();
       } else {
         const size_t buflen    = 120;
         const size_t argbuflen = 30;
         char buf[buflen];
         char argbuf[argbuflen];
         size_t len = MIN2<size_t>(iter.key_length(), argbuflen - 1);
         strncpy(argbuf, iter.key_addr(), len);
         argbuf[len] = '\0';
         jio_snprintf(buf, buflen - 1, "Unknown argument '%s' in diagnostic command.", argbuf);
         THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), buf);
       }
     }
     cont = iter.next(CHECK);
   }
   check(CHECK);
 }
 GenDCmdArgument* DCmdParser::lookup_dcmd_option(const char* name, size_t len) {
   GenDCmdArgument* arg = _options;
   while (arg != NULL) {
     if (strlen(arg->name()) == len &&
       strncmp(name, arg->name(), len) == 0) {
       return arg;
     }
     arg = arg->next();
   }
   return NULL;
 }
 void DCmdParser::check(TRAPS) {
   const size_t buflen = 256;
   char buf[buflen];
   GenDCmdArgument* arg = _arguments_list;
   while (arg != NULL) {
     if (arg->is_mandatory() && !arg->has_value()) {
       jio_snprintf(buf, buflen - 1, "The argument '%s' is mandatory.", arg->name());
       THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), buf);
     }
     arg = arg->next();
   }
   arg = _options;
   while (arg != NULL) {
     if (arg->is_mandatory() && !arg->has_value()) {
       jio_snprintf(buf, buflen - 1, "The option '%s' is mandatory.", arg->name());
       THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), buf);
     }
     arg = arg->next();
   }
 }
 void DCmdParser::print_help(outputStream* out, const char* cmd_name) {
   out->print("Syntax : %s %s", cmd_name, _options == NULL ? "" : "[options]");
   GenDCmdArgument* arg = _arguments_list;
   while (arg != NULL) {
     if (arg->is_mandatory()) {
       out->print(" <%s>", arg->name());
     } else {
       out->print(" [<%s>]", arg->name());
     }
     arg = arg->next();
   }
   out->print_cr("");
   if (_arguments_list != NULL) {
     out->print_cr("\nArguments:");
     arg = _arguments_list;
     while (arg != NULL) {
       out->print("\t%s : %s %s (%s, ", arg->name(),
                  arg->is_mandatory() ? "" : "[optional]",
                  arg->description(), arg->type());
       if (arg->has_default()) {
         out->print(arg->default_string());
       } else {
         out->print("no default value");
       }
       out->print_cr(")");
       arg = arg->next();
     }
   }
   if (_options != NULL) {
     out->print_cr("\nOptions: (options must be specified using the <key> or <key>=<value> syntax)");
     arg = _options;
     while (arg != NULL) {
       out->print("\t%s : %s %s (%s, ", arg->name(),
                  arg->is_mandatory() ? "" : "[optional]",
                  arg->description(), arg->type());
       if (arg->has_default()) {
         out->print(arg->default_string());
       } else {
         out->print("no default value");
       }
       out->print_cr(")");
       arg = arg->next();
     }
   }
 }
 void DCmdParser::reset(TRAPS) {
   GenDCmdArgument* arg = _arguments_list;
   while (arg != NULL) {
     arg->reset(CHECK);
     arg = arg->next();
   }
   arg = _options;
   while (arg != NULL) {
     arg->reset(CHECK);
     arg = arg->next();
   }
 }
 void DCmdParser::cleanup() {
   GenDCmdArgument* arg = _arguments_list;
   while (arg != NULL) {
     arg->cleanup();
     arg = arg->next();
   }
   arg = _options;
   while (arg != NULL) {
     arg->cleanup();
     arg = arg->next();
   }
 }
 int DCmdParser::num_arguments() {
   GenDCmdArgument* arg = _arguments_list;
   int count = 0;
   while (arg != NULL) {
     count++;
     arg = arg->next();
   }
   arg = _options;
   while (arg != NULL) {
     count++;
     arg = arg->next();
   }
   return count;
 }
 GrowableArray<const char *>* DCmdParser::argument_name_array() {
   int count = num_arguments();
   GrowableArray<const char *>* array = new GrowableArray<const char *>(count);
   GenDCmdArgument* arg = _arguments_list;
   while (arg != NULL) {
     array->append(arg->name());
     arg = arg->next();
   }
   arg = _options;
   while (arg != NULL) {
     array->append(arg->name());
     arg = arg->next();
   }
   return array;
 }
 GrowableArray<DCmdArgumentInfo*>* DCmdParser::argument_info_array() {
   int count = num_arguments();
   GrowableArray<DCmdArgumentInfo*>* array = new GrowableArray<DCmdArgumentInfo *>(count);
   int idx = 0;
   GenDCmdArgument* arg = _arguments_list;
   while (arg != NULL) {
     array->append(new DCmdArgumentInfo(arg->name(), arg->description(),
                   arg->type(), arg->default_string(), arg->is_mandatory(),
                   false, arg->allow_multiple(), idx));
     idx++;
     arg = arg->next();
   }
   arg = _options;
   while (arg != NULL) {
     array->append(new DCmdArgumentInfo(arg->name(), arg->description(),
                   arg->type(), arg->default_string(), arg->is_mandatory(),
                   true, arg->allow_multiple()));
     arg = arg->next();
   }
   return array;
 }
 DCmdFactory* DCmdFactory::_DCmdFactoryList = NULL;
 bool DCmdFactory::_has_pending_jmx_notification = false;
 void DCmd::parse_and_execute(DCmdSource source, outputStream* out,
                              const char* cmdline, char delim, TRAPS) {
   if (cmdline == NULL) return; // Nothing to do!
   DCmdIter iter(cmdline, '\n');
   int count = 0;
   while (iter.has_next()) {
     if(source == DCmd_Source_MBean && count > 0) {
       // When diagnostic commands are invoked via JMX, each command line
       // must contains one and only one command because of the Permission
       // checks performed by the DiagnosticCommandMBean
       THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
               "Invalid syntax");
     }
     CmdLine line = iter.next();
     if (line.is_stop()) {
       break;
     }
     if (line.is_executable()) {
       DCmd* command = DCmdFactory::create_local_DCmd(source, line, out, CHECK);
       assert(command != NULL, "command error must be handled before this line");
       DCmdMark mark(command);
       command->parse(&line, delim, CHECK);
       command->execute(source, CHECK);
     }
     count++;
   }
 }
 void DCmdWithParser::parse(CmdLine* line, char delim, TRAPS) {
   _dcmdparser.parse(line, delim, CHECK);
 }
 void DCmdWithParser::print_help(const char* name) {
   _dcmdparser.print_help(output(), name);
 }
 void DCmdWithParser::reset(TRAPS) {
   _dcmdparser.reset(CHECK);
 }
 void DCmdWithParser::cleanup() {
   _dcmdparser.cleanup();
 }
 GrowableArray<const char*>* DCmdWithParser::argument_name_array() {
   return _dcmdparser.argument_name_array();
 }
 GrowableArray<DCmdArgumentInfo*>* DCmdWithParser::argument_info_array() {
   return _dcmdparser.argument_info_array();
 }
 void DCmdFactory::push_jmx_notification_request() {
   MutexLockerEx ml(Service_lock, Mutex::_no_safepoint_check_flag);
   _has_pending_jmx_notification = true;
   Service_lock->notify_all();
 }
 void DCmdFactory::send_notification(TRAPS) {
   DCmdFactory::send_notification_internal(THREAD);
   // Clearing pending exception to avoid premature termination of
   // the service thread
   if (HAS_PENDING_EXCEPTION) {
     CLEAR_PENDING_EXCEPTION;
   }
 }
 void DCmdFactory::send_notification_internal(TRAPS) {
   ResourceMark rm(THREAD);
   HandleMark hm(THREAD);
   bool notif = false;
   {
     MutexLockerEx ml(Service_lock, Mutex::_no_safepoint_check_flag);
     notif = _has_pending_jmx_notification;
     _has_pending_jmx_notification = false;
   }
   if (notif) {
     Klass* k = Management::sun_management_ManagementFactoryHelper_klass(CHECK);
     instanceKlassHandle mgmt_factory_helper_klass(THREAD, k);
     JavaValue result(T_OBJECT);
     JavaCalls::call_static(&result,
             mgmt_factory_helper_klass,
             vmSymbols::getDiagnosticCommandMBean_name(),
             vmSymbols::getDiagnosticCommandMBean_signature(),
             CHECK);
     instanceOop m = (instanceOop) result.get_jobject();
     instanceHandle dcmd_mbean_h(THREAD, m);
     Klass* k2 = Management::sun_management_DiagnosticCommandImpl_klass(CHECK);
     instanceKlassHandle dcmd_mbean_klass(THREAD, k2);
     if (!dcmd_mbean_h->is_a(k2)) {
       THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
               "ManagementFactory.getDiagnosticCommandMBean didn't return a DiagnosticCommandMBean instance");
     }
     JavaValue result2(T_VOID);
     JavaCallArguments args2(dcmd_mbean_h);
     JavaCalls::call_virtual(&result2,
             dcmd_mbean_klass,
             vmSymbols::createDiagnosticFrameworkNotification_name(),
             vmSymbols::void_method_signature(),
             &args2,
             CHECK);
   }
 }
 Mutex* DCmdFactory::_dcmdFactory_lock = new Mutex(Mutex::leaf, "DCmdFactory", true);
 bool DCmdFactory::_send_jmx_notification = false;
 DCmdFactory* DCmdFactory::factory(DCmdSource source, const char* name, size_t len) {
   MutexLockerEx ml(_dcmdFactory_lock, Mutex::_no_safepoint_check_flag);
   DCmdFactory* factory = _DCmdFactoryList;
   while (factory != NULL) {
     if (strlen(factory->name()) == len &&
         strncmp(name, factory->name(), len) == 0) {
       if(factory->export_flags() & source) {
         return factory;
       } else {
         return NULL;
       }
     }
     factory = factory->_next;
   }
   return NULL;
 }
 int DCmdFactory::register_DCmdFactory(DCmdFactory* factory) {
   MutexLockerEx ml(_dcmdFactory_lock, Mutex::_no_safepoint_check_flag);
   factory->_next = _DCmdFactoryList;
   _DCmdFactoryList = factory;
   if (_send_jmx_notification && !factory->_hidden
       && (factory->_export_flags & DCmd_Source_MBean)) {
     DCmdFactory::push_jmx_notification_request();
   }
   return 0; // Actually, there's no checks for duplicates
 }
 DCmd* DCmdFactory::create_global_DCmd(DCmdSource source, CmdLine &line,
                                       outputStream* out, TRAPS) {
   DCmdFactory* f = factory(source, line.cmd_addr(), line.cmd_len());
   if (f != NULL) {
     if (f->is_enabled()) {
       THROW_MSG_NULL(vmSymbols::java_lang_IllegalArgumentException(),
                      f->disabled_message());
     }
     return f->create_Cheap_instance(out);
   }
   THROW_MSG_NULL(vmSymbols::java_lang_IllegalArgumentException(),
              "Unknown diagnostic command");
 }
 DCmd* DCmdFactory::create_local_DCmd(DCmdSource source, CmdLine &line,
                                      outputStream* out, TRAPS) {
   DCmdFactory* f = factory(source, line.cmd_addr(), line.cmd_len());
   if (f != NULL) {
     if (!f->is_enabled()) {
       THROW_MSG_NULL(vmSymbols::java_lang_IllegalArgumentException(),
                      f->disabled_message());
     }
     return f->create_resource_instance(out);
   }
   THROW_MSG_NULL(vmSymbols::java_lang_IllegalArgumentException(),
              "Unknown diagnostic command");
 }
 GrowableArray<const char*>* DCmdFactory::DCmd_list(DCmdSource source) {
   MutexLockerEx ml(_dcmdFactory_lock, Mutex::_no_safepoint_check_flag);
   GrowableArray<const char*>* array = new GrowableArray<const char*>();
   DCmdFactory* factory = _DCmdFactoryList;
   while (factory != NULL) {
     if (!factory->is_hidden() && (factory->export_flags() & source)) {
       array->append(factory->name());
     }
     factory = factory->next();
   }
   return array;
 }
 GrowableArray<DCmdInfo*>* DCmdFactory::DCmdInfo_list(DCmdSource source ) {
   MutexLockerEx ml(_dcmdFactory_lock, Mutex::_no_safepoint_check_flag);
   GrowableArray<DCmdInfo*>* array = new GrowableArray<DCmdInfo*>();
   DCmdFactory* factory = _DCmdFactoryList;
   while (factory != NULL) {
     if (!factory->is_hidden() && (factory->export_flags() & source)) {
       array->append(new DCmdInfo(factory->name(),
                     factory->description(), factory->impact(),
                     factory->permission(), factory->num_arguments(),
                     factory->is_enabled()));
     }
     factory = factory->next();
   }
   return array;
 }

Mercurial > jdk8-mips64-public > hotspot / annotate

src/share/vm/services/diagnosticFramework.cpp@f42c10a3d4b1 (annotated)

src/share/vm/services/diagnosticFramework.cpp