--- a/hotspot/src/share/vm/services/attachListener.cpp Fri Dec 09 19:28:34 2011 -0800
+++ b/hotspot/src/share/vm/services/attachListener.cpp Wed Dec 14 20:06:21 2011 -0500
@@ -34,6 +34,7 @@
#include "runtime/javaCalls.hpp"
#include "runtime/os.hpp"
#include "services/attachListener.hpp"
+#include "services/diagnosticCommand.hpp"
#include "services/heapDumper.hpp"
volatile bool AttachListener::_initialized;
@@ -148,6 +149,24 @@
return JNI_OK;
}
+// A jcmd attach operation request was received, which will now
+// dispatch to the diagnostic commands used for serviceability functions.
+static jint jcmd(AttachOperation* op, outputStream* out) {
+ Thread* THREAD = Thread::current();
+ // All the supplied jcmd arguments are stored as a single
+ // string (op->arg(0)). This is parsed by the Dcmd framework.
+ DCmd::parse_and_execute(out, op->arg(0), ' ', THREAD);
+ if (HAS_PENDING_EXCEPTION) {
+ java_lang_Throwable::print(PENDING_EXCEPTION, out);
+ CLEAR_PENDING_EXCEPTION;
+ // The exception has been printed on the output stream
+ // If the JVM returns JNI_ERR, the attachAPI throws a generic I/O
+ // exception and the content of the output stream is not processed.
+ // By returning JNI_OK, the exception will be displayed on the client side
+ }
+ return JNI_OK;
+}
+
#ifndef SERVICES_KERNEL // Heap dumping not supported
// Implementation of "dumpheap" command.
//
@@ -366,6 +385,7 @@
{ "inspectheap", heap_inspection },
{ "setflag", set_flag },
{ "printflag", print_flag },
+ { "jcmd", jcmd },
{ NULL, NULL }
};
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/src/share/vm/services/diagnosticArgument.cpp Wed Dec 14 20:06:21 2011 -0500
@@ -0,0 +1,112 @@
+/*
+ * Copyright (c) 2011, 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/allocation.inline.hpp"
+#include "runtime/thread.hpp"
+#include "services/diagnosticArgument.hpp"
+
+void GenDCmdArgument::read_value(const char* str, size_t len, TRAPS) {
+ if (is_set()) {
+ THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
+ "Duplicates in diagnostic command arguments");
+ }
+ parse_value(str, len, CHECK);
+ set_is_set(true);
+}
+
+template <> void DCmdArgument<jlong>::parse_value(const char* str,
+ size_t len, TRAPS) {
+ if (sscanf(str, INT64_FORMAT, &_value) != 1) {
+ THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
+ "Integer parsing error in diagnostic command arguments");
+ }
+}
+
+template <> void DCmdArgument<jlong>::init_value(TRAPS) {
+ if (has_default()) {
+ this->parse_value(_default_string, strlen(_default_string), THREAD);
+ if (HAS_PENDING_EXCEPTION) {
+ fatal("Default string must be parsable");
+ }
+ } else {
+ set_value(0);
+ }
+}
+
+template <> void DCmdArgument<jlong>::destroy_value() { }
+
+template <> void DCmdArgument<bool>::parse_value(const char* str,
+ size_t len, TRAPS) {
+ if (len == 0) {
+ set_value(true);
+ } else {
+ if (strcasecmp(str, "true") == 0) {
+ set_value(true);
+ } else if (strcasecmp(str, "false") == 0) {
+ set_value(false);
+ } else {
+ THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
+ "Boolean parsing error in diagnostic command arguments");
+ }
+ }
+}
+
+template <> void DCmdArgument<bool>::init_value(TRAPS) {
+ if (has_default()) {
+ this->parse_value(_default_string, strlen(_default_string), THREAD);
+ if (HAS_PENDING_EXCEPTION) {
+ fatal("Default string must be parsable");
+ }
+ } else {
+ set_value(false);
+ }
+}
+
+template <> void DCmdArgument<bool>::destroy_value() { }
+
+template <> void DCmdArgument<char*>::parse_value(const char* str,
+ size_t len, TRAPS) {
+ _value = NEW_C_HEAP_ARRAY(char, len+1);
+ strncpy(_value, str, len);
+ _value[len] = 0;
+}
+
+template <> void DCmdArgument<char*>::init_value(TRAPS) {
+ if (has_default()) {
+ this->parse_value(_default_string, strlen(_default_string), THREAD);
+ if (HAS_PENDING_EXCEPTION) {
+ fatal("Default string must be parsable");
+ }
+ } else {
+ set_value(NULL);
+ }
+}
+
+template <> void DCmdArgument<char*>::destroy_value() {
+ if (_value != NULL) {
+ FREE_C_HEAP_ARRAY(char, _value);
+ set_value(NULL);
+ }
+}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/src/share/vm/services/diagnosticArgument.hpp Wed Dec 14 20:06:21 2011 -0500
@@ -0,0 +1,102 @@
+/*
+ * Copyright (c) 2011, 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.
+ *
+ */
+
+#ifndef SHARE_VM_SERVICES_DIAGNOSTICARGUMENT_HPP
+#define SHARE_VM_SERVICES_DIAGNOSTICARGUMENT_HPP
+
+#include "classfile/vmSymbols.hpp"
+#include "memory/allocation.hpp"
+#include "runtime/os.hpp"
+#include "runtime/thread.hpp"
+#include "utilities/exceptions.hpp"
+
+class GenDCmdArgument : public ResourceObj {
+protected:
+ GenDCmdArgument* _next;
+ const char* _name;
+ const char* _description;
+ const char* _type;
+ const char* _default_string;
+ bool _is_set;
+ bool _is_mandatory;
+ GenDCmdArgument(const char* name, const char* description, const char* type,
+ const char* default_string, bool mandatory) {
+ _name = name;
+ _description = description;
+ _type = type;
+ _default_string = default_string;
+ _is_mandatory = mandatory;
+ _is_set = false;
+ };
+public:
+ const char* name() { return _name; }
+ const char* description() { return _description; }
+ const char* type() { return _type; }
+ const char* default_string() { return _default_string; }
+ bool is_set() { return _is_set; }
+ void set_is_set(bool b) { _is_set = b; }
+ bool is_mandatory() { return _is_mandatory; }
+ bool has_value() { return _is_set || _default_string != NULL; }
+ bool has_default() { return _default_string != NULL; }
+ void read_value(const char* str, size_t len, TRAPS);
+ virtual void parse_value(const char* str, size_t len, TRAPS) = 0;
+ virtual void init_value(TRAPS) = 0;
+ virtual void reset(TRAPS) = 0;
+ virtual void cleanup() = 0;
+ void set_next(GenDCmdArgument* arg) {
+ _next = arg;
+ }
+ GenDCmdArgument* next() {
+ return _next;
+ }
+};
+
+template <class ArgType> class DCmdArgument: public GenDCmdArgument {
+private:
+ ArgType _value;
+public:
+ DCmdArgument(const char* name, const char* description, const char* type,
+ bool mandatory) :
+ GenDCmdArgument(name, description, type, NULL, mandatory) { }
+ DCmdArgument(const char* name, const char* description, const char* type,
+ bool mandatory, const char* defaultvalue) :
+ GenDCmdArgument(name, description, type, defaultvalue, mandatory)
+ { }
+ ~DCmdArgument() { destroy_value(); }
+ ArgType value() { return _value;}
+ void set_value(ArgType v) { _value = v; }
+ void reset(TRAPS) {
+ destroy_value();
+ init_value(CHECK);
+ _is_set = false;
+ }
+ void cleanup() {
+ destroy_value();
+ }
+ void parse_value(const char* str, size_t len, TRAPS);
+ void init_value(TRAPS);
+ void destroy_value();
+};
+
+#endif /* SHARE_VM_SERVICES_DIAGNOSTICARGUMENT_HPP */
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/src/share/vm/services/diagnosticCommand.cpp Wed Dec 14 20:06:21 2011 -0500
@@ -0,0 +1,131 @@
+/*
+ * Copyright (c) 2011, 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 "services/diagnosticArgument.hpp"
+#include "services/diagnosticCommand.hpp"
+#include "services/diagnosticFramework.hpp"
+
+HelpDCmd::HelpDCmd(outputStream* output, bool heap) : DCmd(output, heap),
+ _all("-all", "Show help for all commands", "BOOLEAN", false, "false"),
+ _cmd("command name", "The name of the command for which we want help",
+ "STRING", false) {
+ _dcmdparser.add_dcmd_option(&_all);
+ _dcmdparser.add_dcmd_argument(&_cmd);
+};
+
+void HelpDCmd::parse(CmdLine* line, char delim, TRAPS) {
+ _dcmdparser.parse(line, delim, CHECK);
+}
+
+void HelpDCmd::print_help(outputStream* out) {
+ _dcmdparser.print_help(out, name());
+}
+
+void HelpDCmd::execute(TRAPS) {
+ if (_all.value()) {
+ GrowableArray<const char*>* cmd_list = DCmdFactory::DCmd_list();
+ for (int i = 0; i < cmd_list->length(); i++) {
+ DCmdFactory* factory = DCmdFactory::factory(cmd_list->at(i),
+ strlen(cmd_list->at(i)));
+ if (!factory->is_hidden()) {
+ output()->print_cr("%s%s", factory->name(),
+ factory->is_enabled() ? "" : " [disabled]");
+ output()->print_cr("\t%s", factory->description());
+ output()->cr();
+ }
+ factory = factory->next();
+ }
+ } else if (_cmd.has_value()) {
+ DCmd* cmd = NULL;
+ DCmdFactory* factory = DCmdFactory::factory(_cmd.value(),
+ strlen(_cmd.value()));
+ if (factory != NULL) {
+ output()->print_cr("%s%s", factory->name(),
+ factory->is_enabled() ? "" : " [disabled]");
+ output()->print_cr(factory->description());
+ output()->print_cr("\nImpact: %s", factory->impact());
+ cmd = factory->create_resource_instance(output());
+ if (cmd != NULL) {
+ DCmdMark mark(cmd);
+ cmd->print_help(output());
+ }
+ } else {
+ output()->print_cr("Help unavailable : '%s' : No such command", _cmd.value());
+ }
+ } else {
+ output()->print_cr("The following commands are available:");
+ GrowableArray<const char *>* cmd_list = DCmdFactory::DCmd_list();
+ for (int i = 0; i < cmd_list->length(); i++) {
+ DCmdFactory* factory = DCmdFactory::factory(cmd_list->at(i),
+ strlen(cmd_list->at(i)));
+ if (!factory->is_hidden()) {
+ output()->print_cr("%s%s", factory->name(),
+ factory->is_enabled() ? "" : " [disabled]");
+ }
+ factory = factory->_next;
+ }
+ output()->print_cr("\nFor more information about a specific command use 'help <command>'.");
+ }
+}
+
+void HelpDCmd::reset(TRAPS) {
+ _dcmdparser.reset(CHECK);
+}
+
+void HelpDCmd::cleanup() {
+ _dcmdparser.cleanup();
+}
+
+int HelpDCmd::num_arguments() {
+ ResourceMark rm;
+ HelpDCmd* dcmd = new HelpDCmd(NULL, false);
+ if (dcmd != NULL) {
+ DCmdMark mark(dcmd);
+ return dcmd->_dcmdparser.num_arguments();
+ } else {
+ return 0;
+ }
+}
+
+GrowableArray<const char*>* HelpDCmd::argument_name_array() {
+ return _dcmdparser.argument_name_array();
+}
+
+GrowableArray<DCmdArgumentInfo*>* HelpDCmd::argument_info_array() {
+ return _dcmdparser.argument_info_array();
+}
+
+void VersionDCmd::execute(TRAPS) {
+ output()->print_cr("%s version %s", Abstract_VM_Version::vm_name(),
+ Abstract_VM_Version::vm_release());
+ JDK_Version jdk_version = JDK_Version::current();
+ if (jdk_version.update_version() > 0) {
+ output()->print_cr("JDK %d.%d_%02d", jdk_version.major_version(),
+ jdk_version.minor_version(), jdk_version.update_version());
+ } else {
+ output()->print_cr("JDK %d.%d", jdk_version.major_version(),
+ jdk_version.minor_version());
+ }
+}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/src/share/vm/services/diagnosticCommand.hpp Wed Dec 14 20:06:21 2011 -0500
@@ -0,0 +1,76 @@
+/*
+ * Copyright (c) 2011, 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.
+ *
+ */
+
+#ifndef SHARE_VM_SERVICES_DIAGNOSTICCOMMAND_HPP
+#define SHARE_VM_SERVICES_DIAGNOSTICCOMMAND_HPP
+
+#include "runtime/arguments.hpp"
+#include "classfile/vmSymbols.hpp"
+#include "utilities/ostream.hpp"
+#include "runtime/vm_version.hpp"
+#include "runtime/vmThread.hpp"
+#include "runtime/os.hpp"
+#include "services/diagnosticArgument.hpp"
+#include "services/diagnosticCommand.hpp"
+#include "services/diagnosticFramework.hpp"
+
+class HelpDCmd : public DCmd {
+protected:
+ DCmdParser _dcmdparser;
+ DCmdArgument<bool> _all;
+ DCmdArgument<char*> _cmd;
+public:
+ HelpDCmd(outputStream* output, bool heap);
+ static const char* name() { return "help"; }
+ static const char* description() {
+ return "For more information about a specific command use 'help <command>'. "
+ "With no argument this will show a list of available commands. "
+ "'help all' will show help for all commands.";
+ }
+ static const char* impact() { return "Low: "; }
+ static int num_arguments();
+ virtual void parse(CmdLine* line, char delim, TRAPS);
+ virtual void execute(TRAPS);
+ virtual void reset(TRAPS);
+ virtual void cleanup();
+ virtual void print_help(outputStream* out);
+ virtual GrowableArray<const char*>* argument_name_array();
+ virtual GrowableArray<DCmdArgumentInfo*>* argument_info_array();
+};
+
+class VersionDCmd : public DCmd {
+public:
+ VersionDCmd(outputStream* output, bool heap) : DCmd(output,heap) { }
+ static const char* name() { return "VM.version"; }
+ static const char* description() {
+ return "Print JVM version information.";
+ }
+ static const char* impact() { return "Low: "; }
+ static int num_arguments() { return 0; }
+ virtual void parse(CmdLine* line, char delim, TRAPS) { }
+ virtual void execute(TRAPS);
+ virtual void print_help(outputStream* out) { }
+};
+
+#endif // SHARE_VM_SERVICES_DIAGNOSTICCOMMAND_HPP
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/src/share/vm/services/diagnosticFramework.cpp Wed Dec 14 20:06:21 2011 -0500
@@ -0,0 +1,450 @@
+/*
+ * Copyright (c) 2011, 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 && isspace(_buffer[_cursor])) {
+ _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];
+ 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];
+ 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;
+ // check if the argument has the <key>=<value> format
+ if (_cursor <= _len -1 && _buffer[_cursor] == '=') {
+ _cursor++;
+ _value_addr = &_buffer[_cursor];
+ // 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];
+ 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;
+ } 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 {
+ THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
+ "Unknown argument in diagnostic command");
+ }
+ }
+ 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) {
+ GenDCmdArgument* arg = _arguments_list;
+ while (arg != NULL) {
+ if (arg->is_mandatory() && !arg->has_value()) {
+ THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
+ "Missing argument for diagnostic command");
+ }
+ arg = arg->next();
+ }
+ arg = _options;
+ while (arg != NULL) {
+ if (arg->is_mandatory() && !arg->has_value()) {
+ THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
+ "Missing option for diagnostic command");
+ }
+ arg = arg->next();
+ }
+}
+
+void DCmdParser::print_help(outputStream* out, const char* cmd_name) {
+ out->print("\nSyntax : %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, 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 = arg->next();
+ }
+ return array;
+}
+
+DCmdFactory* DCmdFactory::_DCmdFactoryList = NULL;
+
+void DCmd::parse_and_execute(outputStream* out, const char* cmdline,
+ char delim, TRAPS) {
+
+ if (cmdline == NULL) return; // Nothing to do!
+ DCmdIter iter(cmdline, '\n');
+
+ while (iter.has_next()) {
+ CmdLine line = iter.next();
+ if (line.is_stop()) {
+ break;
+ }
+ if (line.is_executable()) {
+ DCmd* command = DCmdFactory::create_local_DCmd(line, out, CHECK);
+ assert(command != NULL, "command error must be handled before this line");
+ DCmdMark mark(command);
+ command->parse(&line, delim, CHECK);
+ command->execute(CHECK);
+ }
+ }
+}
+
+Mutex* DCmdFactory::_dcmdFactory_lock = new Mutex(Mutex::leaf, "DCmdFactory", true);
+
+DCmdFactory* DCmdFactory::factory(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) {
+ return factory;
+ }
+ 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;
+ return 0; // Actually, there's no checks for duplicates
+}
+
+DCmd* DCmdFactory::create_global_DCmd(CmdLine &line, outputStream* out, TRAPS) {
+ DCmdFactory* f = factory(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(CmdLine &line, outputStream* out, TRAPS) {
+ DCmdFactory* f = factory(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() {
+ 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()) {
+ array->append(factory->name());
+ }
+ factory = factory->next();
+ }
+ return array;
+}
+
+GrowableArray<DCmdInfo*>* DCmdFactory::DCmdInfo_list() {
+ 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()) {
+ array->append(new DCmdInfo(factory->name(),
+ factory->description(), factory->impact(),
+ factory->num_arguments(), factory->is_enabled()));
+ }
+ factory = factory->next();
+ }
+ return array;
+}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/src/share/vm/services/diagnosticFramework.hpp Wed Dec 14 20:06:21 2011 -0500
@@ -0,0 +1,362 @@
+/*
+ * Copyright (c) 2011, 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.
+ *
+ */
+
+#ifndef SHARE_VM_SERVICES_DIAGNOSTICFRAMEWORK_HPP
+#define SHARE_VM_SERVICES_DIAGNOSTICFRAMEWORK_HPP
+
+#include "classfile/vmSymbols.hpp"
+#include "memory/allocation.hpp"
+#include "runtime/arguments.hpp"
+#include "runtime/os.hpp"
+#include "runtime/vm_version.hpp"
+#include "runtime/vmThread.hpp"
+#include "utilities/ostream.hpp"
+
+
+// CmdLine is the class used to handle a command line containing a single
+// diagnostic command and its arguments. It provides methods to access the
+// command name and the beginning of the arguments. The class is also
+// able to identify commented command lines and the "stop" keyword
+class CmdLine : public StackObj {
+private:
+ const char* _cmd;
+ size_t _cmd_len;
+ const char* _args;
+ size_t _args_len;
+public:
+ CmdLine(const char* line, size_t len, bool no_command_name);
+ const char* args_addr() const { return _args; }
+ size_t args_len() const { return _args_len; }
+ const char* cmd_addr() const { return _cmd; }
+ size_t cmd_len() const { return _cmd_len; }
+ bool is_empty() { return _cmd_len == 0; }
+ bool is_executable() { return is_empty() || _cmd[0] != '#'; }
+ bool is_stop() { return !is_empty() && strncmp("stop", _cmd, _cmd_len) == 0; }
+};
+
+// Iterator class taking a character string in input and returning a CmdLine
+// instance for each command line. The argument delimiter has to be specified.
+class DCmdIter : public StackObj {
+ friend class DCmd;
+private:
+ const char* _str;
+ char _delim;
+ size_t _len;
+ size_t _cursor;
+public:
+
+ DCmdIter(const char* str, char delim) {
+ _str = str;
+ _delim = delim;
+ _len = strlen(str);
+ _cursor = 0;
+ }
+ bool has_next() { return _cursor < _len; }
+ CmdLine next() {
+ assert(_cursor <= _len, "Cannot iterate more");
+ size_t n = _cursor;
+ while (n < _len && _str[n] != _delim) n++;
+ CmdLine line(&(_str[_cursor]), n - _cursor, false);
+ _cursor = n + 1;
+ // The default copy constructor of CmdLine is used to return a CmdLine
+ // instance to the caller.
+ return line;
+ }
+};
+
+// Iterator class to iterate over diagnostic command arguments
+class DCmdArgIter : public ResourceObj {
+ const char* _buffer;
+ size_t _len;
+ size_t _cursor;
+ const char* _key_addr;
+ size_t _key_len;
+ const char* _value_addr;
+ size_t _value_len;
+ char _delim;
+public:
+ DCmdArgIter(const char* buf, size_t len, char delim) {
+ _buffer = buf;
+ _len = len;
+ _delim = delim;
+ _cursor = 0;
+ }
+ bool next(TRAPS);
+ const char* key_addr() { return _key_addr; }
+ size_t key_length() { return _key_len; }
+ const char* value_addr() { return _value_addr; }
+ size_t value_length() { return _value_len; }
+};
+
+// A DCmdInfo instance provides a description of a diagnostic command. It is
+// used to export the description to the JMX interface of the framework.
+class DCmdInfo : public ResourceObj {
+protected:
+ const char* _name;
+ const char* _description;
+ const char* _impact;
+ int _num_arguments;
+ bool _is_enabled;
+public:
+ DCmdInfo(const char* name,
+ const char* description,
+ const char* impact,
+ int num_arguments,
+ bool enabled) {
+ this->_name = name;
+ this->_description = description;
+ this->_impact = impact;
+ this->_num_arguments = num_arguments;
+ this->_is_enabled = enabled;
+ }
+ const char* name() const { return _name; }
+ const char* description() const { return _description; }
+ const char* impact() const { return _impact; }
+ int num_arguments() const { return _num_arguments; }
+ bool is_enabled() const { return _is_enabled; }
+
+ static bool by_name(void* name, DCmdInfo* info);
+};
+
+// A DCmdArgumentInfo instance provides a description of a diagnostic command
+// argument. It is used to export the description to the JMX interface of the
+// framework.
+class DCmdArgumentInfo : public ResourceObj {
+protected:
+ const char* _name;
+ const char* _description;
+ const char* _type;
+ const char* _default_string;
+ bool _mandatory;
+ bool _option;
+ int _position;
+public:
+ DCmdArgumentInfo(const char* name, const char* description, const char* type,
+ const char* default_string, bool mandatory, bool option) {
+ this->_name = name;
+ this->_description = description;
+ this->_type = type;
+ this->_default_string = default_string;
+ this->_option = option;
+ this->_mandatory = mandatory;
+ this->_option = option;
+ this->_position = -1;
+ }
+ DCmdArgumentInfo(const char* name, const char* description, const char* type,
+ const char* default_string, bool mandatory, bool option,
+ int position) {
+ this->_name = name;
+ this->_description = description;
+ this->_type = type;
+ this->_default_string = default_string;
+ this->_option = option;
+ this->_mandatory = mandatory;
+ this->_option = option;
+ this->_position = position;
+ }
+ const char* name() const { return _name; }
+ const char* description() const { return _description; }
+ const char* type() const { return _type; }
+ const char* default_string() const { return _default_string; }
+ bool is_mandatory() const { return _mandatory; }
+ bool is_option() const { return _option; }
+ int position() const { return _position; }
+};
+
+// The DCmdParser class can be used to create an argument parser for a
+// diagnostic command. It is not mandatory to use it to parse arguments.
+class DCmdParser {
+private:
+ GenDCmdArgument* _options;
+ GenDCmdArgument* _arguments_list;
+ char _delim;
+public:
+ DCmdParser() {
+ _options = NULL;
+ _arguments_list = NULL;
+ }
+ void add_dcmd_option(GenDCmdArgument* arg);
+ void add_dcmd_argument(GenDCmdArgument* arg);
+ GenDCmdArgument* lookup_dcmd_option(const char* name, size_t len);
+ GenDCmdArgument* arguments_list() { return _arguments_list; };
+ void check(TRAPS);
+ void parse(CmdLine* line, char delim, TRAPS);
+ void print_help(outputStream* out, const char* cmd_name);
+ void reset(TRAPS);
+ void cleanup();
+ int num_arguments();
+ GrowableArray<const char*>* argument_name_array();
+ GrowableArray<DCmdArgumentInfo*>* argument_info_array();
+};
+
+// The DCmd class is the parent class of all diagnostic commands
+// Diagnostic command instances should not be instantiated directly but
+// created using the associated factory. The factory can be retrieved with
+// the DCmdFactory::getFactory() method.
+// A diagnostic command instance can either be allocated in the resource Area
+// or in the C-heap. Allocation in the resource area is recommended when the
+// current thread is the only one which will access the diagnostic command
+// instance. Allocation in the C-heap is required when the diagnostic command
+// is accessed by several threads (for instance to perform asynchronous
+// execution).
+// To ensure a proper cleanup, it's highly recommended to use a DCmdMark for
+// each diagnostic command instance. In case of a C-heap allocated diagnostic
+// command instance, the DCmdMark must be created in the context of the last
+// thread that will access the instance.
+class DCmd : public ResourceObj {
+protected:
+ outputStream* _output;
+ bool _is_heap_allocated;
+public:
+ DCmd(outputStream* output, bool heap_allocated) {
+ _output = output;
+ _is_heap_allocated = heap_allocated;
+ }
+
+ static const char* name() { return "No Name";}
+ static const char* description() { return "No Help";}
+ static const char* disabled_message() { return "Diagnostic command currently disabled"; }
+ static const char* impact() { return "Low: No impact"; }
+ static int num_arguments() { return 0; }
+ outputStream* output() { return _output; }
+ bool is_heap_allocated() { return _is_heap_allocated; }
+ virtual void print_help(outputStream* out) { };
+ virtual void parse(CmdLine* line, char delim, TRAPS) { }
+ virtual void execute(TRAPS) { }
+ virtual void reset(TRAPS) { }
+ virtual void cleanup() { }
+
+ // support for the JMX interface
+ virtual GrowableArray<const char*>* argument_name_array() {
+ GrowableArray<const char*>* array = new GrowableArray<const char*>(0);
+ return array;
+ }
+ virtual GrowableArray<DCmdArgumentInfo*>* argument_info_array() {
+ GrowableArray<DCmdArgumentInfo*>* array = new GrowableArray<DCmdArgumentInfo*>(0);
+ return array;
+ }
+
+ // main method to invoke the framework
+ static void parse_and_execute(outputStream* out, const char* cmdline,
+ char delim, TRAPS);
+};
+
+class DCmdMark : public StackObj {
+ DCmd* _ref;
+public:
+ DCmdMark(DCmd* cmd) { _ref = cmd; }
+ ~DCmdMark() {
+ if (_ref != NULL) {
+ _ref->cleanup();
+ if (_ref->is_heap_allocated()) {
+ delete _ref;
+ }
+ }
+ }
+};
+
+// Diagnostic commands are not directly instantiated but created with a factory.
+// Each diagnostic command class has its own factory. The DCmdFactory class also
+// manages the status of the diagnostic command (hidden, enabled). A DCmdFactory
+// has to be registered to make the diagnostic command available (see
+// management.cpp)
+class DCmdFactory: public CHeapObj {
+private:
+ static Mutex* _dcmdFactory_lock;
+ // Pointer to the next factory in the singly-linked list of registered
+ // diagnostic commands
+ DCmdFactory* _next;
+ // When disabled, a diagnostic command cannot be executed. Any attempt to
+ // execute it will result in the printing of the disabled message without
+ // instantiating the command.
+ bool _enabled;
+ // When hidden, a diagnostic command doesn't appear in the list of commands
+ // provided by the 'help' command.
+ bool _hidden;
+ int _num_arguments;
+ static DCmdFactory* _DCmdFactoryList;
+public:
+ DCmdFactory(int num_arguments, bool enabled, bool hidden) {
+ _next = NULL;
+ _enabled = enabled;
+ _hidden = hidden;
+ _num_arguments = num_arguments;
+ }
+ bool is_enabled() const { return _enabled; }
+ void set_enabled(bool b) { _enabled = b; }
+ bool is_hidden() const { return _hidden; }
+ void set_hidden(bool b) { _hidden = b; }
+ int num_arguments() { return _num_arguments; }
+ DCmdFactory* next() { return _next; }
+ virtual DCmd* create_Cheap_instance(outputStream* output) = 0;
+ virtual DCmd* create_resource_instance(outputStream* output) = 0;
+ virtual const char* name() const = 0;
+ virtual const char* description() const = 0;
+ virtual const char* impact() const = 0;
+ virtual const char* disabled_message() const = 0;
+ // Register a DCmdFactory to make a diagnostic command available.
+ // Once registered, a diagnostic command must not be unregistered.
+ // To prevent a diagnostic command from being executed, just set the
+ // enabled flag to false.
+ static int register_DCmdFactory(DCmdFactory* factory);
+ static DCmdFactory* factory(const char* cmd, size_t len);
+ // Returns a C-heap allocated diagnostic command for the given command line
+ static DCmd* create_global_DCmd(CmdLine &line, outputStream* out, TRAPS);
+ // Returns a resourceArea allocated diagnostic command for the given command line
+ static DCmd* create_local_DCmd(CmdLine &line, outputStream* out, TRAPS);
+ static GrowableArray<const char*>* DCmd_list();
+ static GrowableArray<DCmdInfo*>* DCmdInfo_list();
+
+ friend class HelpDCmd;
+};
+
+// Template to easily create DCmdFactory instances. See management.cpp
+// where this template is used to create and register factories.
+template <class DCmdClass> class DCmdFactoryImpl : public DCmdFactory {
+public:
+ DCmdFactoryImpl(bool enabled, bool hidden) :
+ DCmdFactory(DCmdClass::num_arguments(), enabled, hidden) { }
+ // Returns a C-heap allocated instance
+ virtual DCmd* create_Cheap_instance(outputStream* output) {
+ return new (ResourceObj::C_HEAP) DCmdClass(output, true);
+ }
+ // Returns a resourceArea allocated instance
+ virtual DCmd* create_resource_instance(outputStream* output) {
+ return new DCmdClass(output, false);
+ }
+ virtual const char* name() const {
+ return DCmdClass::name();
+ }
+ virtual const char* description() const {
+ return DCmdClass::description();
+ }
+ virtual const char* impact() const {
+ return DCmdClass::impact();
+ }
+ virtual const char* disabled_message() const {
+ return DCmdClass::disabled_message();
+ }
+};
+
+#endif // SHARE_VM_SERVICES_DIAGNOSTICFRAMEWORK_HPP
--- a/hotspot/src/share/vm/services/jmm.h Fri Dec 09 19:28:34 2011 -0800
+++ b/hotspot/src/share/vm/services/jmm.h Wed Dec 14 20:06:21 2011 -0500
@@ -48,7 +48,8 @@
JMM_VERSION_1_0 = 0x20010000,
JMM_VERSION_1_1 = 0x20010100, // JDK 6
JMM_VERSION_1_2 = 0x20010200, // JDK 7
- JMM_VERSION = 0x20010201
+ JMM_VERSION_1_2_1 = 0x20010201, // JDK 7 GA
+ JMM_VERSION = 0x20010202
};
typedef struct {
@@ -188,6 +189,24 @@
/* -1 indicates gc_ext_attribute_values is not big enough */
} jmmGCStat;
+typedef struct {
+ const char* name;
+ const char* description;
+ const char* impact;
+ int num_arguments;
+ jboolean enabled;
+} dcmdInfo;
+
+typedef struct {
+ const char* name;
+ const char* description;
+ const char* type;
+ const char* default_string;
+ jboolean mandatory;
+ jboolean option;
+ int position;
+} dcmdArgInfo;
+
typedef struct jmmInterface_1_ {
void* reserved1;
void* reserved2;
@@ -296,6 +315,18 @@
void (JNICALL *SetGCNotificationEnabled) (JNIEnv *env,
jobject mgr,
jboolean enabled);
+ jobjectArray (JNICALL *GetDiagnosticCommands) (JNIEnv *env);
+ void (JNICALL *GetDiagnosticCommandInfo)
+ (JNIEnv *env,
+ jobjectArray cmds,
+ dcmdInfo *infoArray);
+ void (JNICALL *GetDiagnosticCommandArgumentsInfo)
+ (JNIEnv *env,
+ jstring commandName,
+ dcmdArgInfo *infoArray);
+ jstring (JNICALL *ExecuteDiagnosticCommand)
+ (JNIEnv *env,
+ jstring command);
} JmmInterface;
#ifdef __cplusplus
--- a/hotspot/src/share/vm/services/management.cpp Fri Dec 09 19:28:34 2011 -0800
+++ b/hotspot/src/share/vm/services/management.cpp Wed Dec 14 20:06:21 2011 -0500
@@ -40,7 +40,10 @@
#include "runtime/os.hpp"
#include "runtime/serviceThread.hpp"
#include "services/classLoadingService.hpp"
+#include "services/diagnosticCommand.hpp"
+#include "services/diagnosticFramework.hpp"
#include "services/heapDumper.hpp"
+#include "services/jmm.h"
#include "services/lowMemoryDetector.hpp"
#include "services/gcNotifier.hpp"
#include "services/management.hpp"
@@ -113,6 +116,9 @@
_optional_support.isSynchronizerUsageSupported = 1;
#endif // SERVICES_KERNEL
_optional_support.isThreadAllocatedMemorySupported = 1;
+
+ DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<HelpDCmd>(true, false));
+ DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<VersionDCmd>(true, false));
}
void Management::initialize(TRAPS) {
@@ -2107,6 +2113,122 @@
#endif // SERVICES_KERNEL
JVM_END
+JVM_ENTRY(jobjectArray, jmm_GetDiagnosticCommands(JNIEnv *env))
+ ResourceMark rm(THREAD);
+ GrowableArray<const char *>* dcmd_list = DCmdFactory::DCmd_list();
+ objArrayOop cmd_array_oop = oopFactory::new_objArray(SystemDictionary::String_klass(),
+ dcmd_list->length(), CHECK_NULL);
+ objArrayHandle cmd_array(THREAD, cmd_array_oop);
+ for (int i = 0; i < dcmd_list->length(); i++) {
+ oop cmd_name = java_lang_String::create_oop_from_str(dcmd_list->at(i), CHECK_NULL);
+ cmd_array->obj_at_put(i, cmd_name);
+ }
+ return (jobjectArray) JNIHandles::make_local(env, cmd_array());
+JVM_END
+
+JVM_ENTRY(void, jmm_GetDiagnosticCommandInfo(JNIEnv *env, jobjectArray cmds,
+ dcmdInfo* infoArray))
+ if (cmds == NULL || infoArray == NULL) {
+ THROW(vmSymbols::java_lang_NullPointerException());
+ }
+
+ ResourceMark rm(THREAD);
+
+ objArrayOop ca = objArrayOop(JNIHandles::resolve_non_null(cmds));
+ objArrayHandle cmds_ah(THREAD, ca);
+
+ // Make sure we have a String array
+ klassOop element_klass = objArrayKlass::cast(cmds_ah->klass())->element_klass();
+ if (element_klass != SystemDictionary::String_klass()) {
+ THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
+ "Array element type is not String class");
+ }
+
+ GrowableArray<DCmdInfo *>* info_list = DCmdFactory::DCmdInfo_list();
+
+ int num_cmds = cmds_ah->length();
+ for (int i = 0; i < num_cmds; i++) {
+ oop cmd = cmds_ah->obj_at(i);
+ if (cmd == NULL) {
+ THROW_MSG(vmSymbols::java_lang_NullPointerException(),
+ "Command name cannot be null.");
+ }
+ char* cmd_name = java_lang_String::as_utf8_string(cmd);
+ if (cmd_name == NULL) {
+ THROW_MSG(vmSymbols::java_lang_NullPointerException(),
+ "Command name cannot be null.");
+ }
+ int pos = info_list->find((void*)cmd_name,DCmdInfo::by_name);
+ if (pos == -1) {
+ THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
+ "Unknown diagnostic command");
+ }
+ DCmdInfo* info = info_list->at(pos);
+ infoArray[i].name = info->name();
+ infoArray[i].description = info->description();
+ infoArray[i].impact = info->impact();
+ infoArray[i].num_arguments = info->num_arguments();
+ infoArray[i].enabled = info->is_enabled();
+ }
+JVM_END
+
+JVM_ENTRY(void, jmm_GetDiagnosticCommandArgumentsInfo(JNIEnv *env,
+ jstring command, dcmdArgInfo* infoArray))
+ ResourceMark rm(THREAD);
+ oop cmd = JNIHandles::resolve_external_guard(command);
+ if (cmd == NULL) {
+ THROW_MSG(vmSymbols::java_lang_NullPointerException(),
+ "Command line cannot be null.");
+ }
+ char* cmd_name = java_lang_String::as_utf8_string(cmd);
+ if (cmd_name == NULL) {
+ THROW_MSG(vmSymbols::java_lang_NullPointerException(),
+ "Command line content cannot be null.");
+ }
+ DCmd* dcmd = NULL;
+ DCmdFactory*factory = DCmdFactory::factory(cmd_name, strlen(cmd_name));
+ if (factory != NULL) {
+ dcmd = factory->create_resource_instance(NULL);
+ }
+ if (dcmd == NULL) {
+ THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
+ "Unknown diagnostic command");
+ }
+ DCmdMark mark(dcmd);
+ GrowableArray<DCmdArgumentInfo*>* array = dcmd->argument_info_array();
+ if (array->length() == 0) {
+ return;
+ }
+ for (int i = 0; i < array->length(); i++) {
+ infoArray[i].name = array->at(i)->name();
+ infoArray[i].description = array->at(i)->description();
+ infoArray[i].type = array->at(i)->type();
+ infoArray[i].default_string = array->at(i)->default_string();
+ infoArray[i].mandatory = array->at(i)->is_mandatory();
+ infoArray[i].option = array->at(i)->is_option();
+ infoArray[i].position = array->at(i)->position();
+ }
+ return;
+JVM_END
+
+JVM_ENTRY(jstring, jmm_ExecuteDiagnosticCommand(JNIEnv *env, jstring commandline))
+ ResourceMark rm(THREAD);
+ oop cmd = JNIHandles::resolve_external_guard(commandline);
+ if (cmd == NULL) {
+ THROW_MSG_NULL(vmSymbols::java_lang_NullPointerException(),
+ "Command line cannot be null.");
+ }
+ char* cmdline = java_lang_String::as_utf8_string(cmd);
+ if (cmdline == NULL) {
+ THROW_MSG_NULL(vmSymbols::java_lang_NullPointerException(),
+ "Command line content cannot be null.");
+ }
+ bufferedStream output;
+ DCmd::parse_and_execute(&output, cmdline, ' ', CHECK_NULL);
+ oop result = java_lang_String::create_oop_from_str(output.as_string(), CHECK_NULL);
+ return (jstring) JNIHandles::make_local(env, result);
+JVM_END
+
jlong Management::ticks_to_ms(jlong ticks) {
assert(os::elapsed_frequency() > 0, "Must be non-zero");
return (jlong)(((double)ticks / (double)os::elapsed_frequency())
@@ -2149,7 +2271,11 @@
jmm_SetVMGlobal,
NULL,
jmm_DumpThreads,
- jmm_SetGCNotificationEnabled
+ jmm_SetGCNotificationEnabled,
+ jmm_GetDiagnosticCommands,
+ jmm_GetDiagnosticCommandInfo,
+ jmm_GetDiagnosticCommandArgumentsInfo,
+ jmm_ExecuteDiagnosticCommand
};
void* Management::get_jmm_interface(int version) {