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/*
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* Copyright 1997-2007 Sun Microsystems, Inc. All Rights Reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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* CA 95054 USA or visit www.sun.com if you need additional information or
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* have any questions.
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*
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*/
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#include "incls/_precompiled.incl"
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#include "incls/_arguments.cpp.incl"
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#define DEFAULT_VENDOR_URL_BUG "http://java.sun.com/webapps/bugreport/crash.jsp"
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#define DEFAULT_JAVA_LAUNCHER "generic"
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char** Arguments::_jvm_flags_array = NULL;
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int Arguments::_num_jvm_flags = 0;
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char** Arguments::_jvm_args_array = NULL;
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int Arguments::_num_jvm_args = 0;
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char* Arguments::_java_command = NULL;
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SystemProperty* Arguments::_system_properties = NULL;
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const char* Arguments::_gc_log_filename = NULL;
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bool Arguments::_has_profile = false;
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bool Arguments::_has_alloc_profile = false;
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uintx Arguments::_initial_heap_size = 0;
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uintx Arguments::_min_heap_size = 0;
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Arguments::Mode Arguments::_mode = _mixed;
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bool Arguments::_java_compiler = false;
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bool Arguments::_xdebug_mode = false;
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const char* Arguments::_java_vendor_url_bug = DEFAULT_VENDOR_URL_BUG;
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const char* Arguments::_sun_java_launcher = DEFAULT_JAVA_LAUNCHER;
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int Arguments::_sun_java_launcher_pid = -1;
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// These parameters are reset in method parse_vm_init_args(JavaVMInitArgs*)
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bool Arguments::_AlwaysCompileLoopMethods = AlwaysCompileLoopMethods;
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bool Arguments::_UseOnStackReplacement = UseOnStackReplacement;
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bool Arguments::_BackgroundCompilation = BackgroundCompilation;
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bool Arguments::_ClipInlining = ClipInlining;
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intx Arguments::_Tier2CompileThreshold = Tier2CompileThreshold;
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char* Arguments::SharedArchivePath = NULL;
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AgentLibraryList Arguments::_libraryList;
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AgentLibraryList Arguments::_agentList;
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abort_hook_t Arguments::_abort_hook = NULL;
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exit_hook_t Arguments::_exit_hook = NULL;
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vfprintf_hook_t Arguments::_vfprintf_hook = NULL;
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SystemProperty *Arguments::_java_ext_dirs = NULL;
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SystemProperty *Arguments::_java_endorsed_dirs = NULL;
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SystemProperty *Arguments::_sun_boot_library_path = NULL;
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SystemProperty *Arguments::_java_library_path = NULL;
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SystemProperty *Arguments::_java_home = NULL;
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SystemProperty *Arguments::_java_class_path = NULL;
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SystemProperty *Arguments::_sun_boot_class_path = NULL;
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char* Arguments::_meta_index_path = NULL;
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char* Arguments::_meta_index_dir = NULL;
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static bool force_client_mode = false;
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// Check if head of 'option' matches 'name', and sets 'tail' remaining part of option string
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static bool match_option(const JavaVMOption *option, const char* name,
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const char** tail) {
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int len = (int)strlen(name);
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if (strncmp(option->optionString, name, len) == 0) {
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*tail = option->optionString + len;
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return true;
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} else {
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return false;
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}
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}
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static void logOption(const char* opt) {
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if (PrintVMOptions) {
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jio_fprintf(defaultStream::output_stream(), "VM option '%s'\n", opt);
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}
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}
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// Process java launcher properties.
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void Arguments::process_sun_java_launcher_properties(JavaVMInitArgs* args) {
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// See if sun.java.launcher or sun.java.launcher.pid is defined.
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// Must do this before setting up other system properties,
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// as some of them may depend on launcher type.
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for (int index = 0; index < args->nOptions; index++) {
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const JavaVMOption* option = args->options + index;
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const char* tail;
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if (match_option(option, "-Dsun.java.launcher=", &tail)) {
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process_java_launcher_argument(tail, option->extraInfo);
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continue;
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}
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if (match_option(option, "-Dsun.java.launcher.pid=", &tail)) {
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_sun_java_launcher_pid = atoi(tail);
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continue;
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}
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}
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}
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// Initialize system properties key and value.
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void Arguments::init_system_properties() {
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PropertyList_add(&_system_properties, new SystemProperty("java.vm.specification.version", "1.0", false));
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PropertyList_add(&_system_properties, new SystemProperty("java.vm.specification.name",
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"Java Virtual Machine Specification", false));
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PropertyList_add(&_system_properties, new SystemProperty("java.vm.specification.vendor",
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"Sun Microsystems Inc.", false));
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PropertyList_add(&_system_properties, new SystemProperty("java.vm.version", VM_Version::vm_release(), false));
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PropertyList_add(&_system_properties, new SystemProperty("java.vm.name", VM_Version::vm_name(), false));
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PropertyList_add(&_system_properties, new SystemProperty("java.vm.vendor", VM_Version::vm_vendor(), false));
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PropertyList_add(&_system_properties, new SystemProperty("java.vm.info", VM_Version::vm_info_string(), true));
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// following are JVMTI agent writeable properties.
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// Properties values are set to NULL and they are
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// os specific they are initialized in os::init_system_properties_values().
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_java_ext_dirs = new SystemProperty("java.ext.dirs", NULL, true);
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_java_endorsed_dirs = new SystemProperty("java.endorsed.dirs", NULL, true);
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_sun_boot_library_path = new SystemProperty("sun.boot.library.path", NULL, true);
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_java_library_path = new SystemProperty("java.library.path", NULL, true);
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_java_home = new SystemProperty("java.home", NULL, true);
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_sun_boot_class_path = new SystemProperty("sun.boot.class.path", NULL, true);
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_java_class_path = new SystemProperty("java.class.path", "", true);
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// Add to System Property list.
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PropertyList_add(&_system_properties, _java_ext_dirs);
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PropertyList_add(&_system_properties, _java_endorsed_dirs);
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PropertyList_add(&_system_properties, _sun_boot_library_path);
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PropertyList_add(&_system_properties, _java_library_path);
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PropertyList_add(&_system_properties, _java_home);
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PropertyList_add(&_system_properties, _java_class_path);
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PropertyList_add(&_system_properties, _sun_boot_class_path);
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// Set OS specific system properties values
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os::init_system_properties_values();
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}
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// String containing commands that will be ignored and cause a
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// warning to be issued. These commands should be accepted
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// for 1.6 but not 1.7. The string should be cleared at the
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// beginning of 1.7.
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static const char* obsolete_jvm_flags_1_5_0[] = {
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"UseTrainGC",
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"UseSpecialLargeObjectHandling",
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"UseOversizedCarHandling",
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"TraceCarAllocation",
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"PrintTrainGCProcessingStats",
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"LogOfCarSpaceSize",
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"OversizedCarThreshold",
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"MinTickInterval",
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"DefaultTickInterval",
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"MaxTickInterval",
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"DelayTickAdjustment",
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"ProcessingToTenuringRatio",
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"MinTrainLength",
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0};
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bool Arguments::made_obsolete_in_1_5_0(const char *s) {
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int i = 0;
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while (obsolete_jvm_flags_1_5_0[i] != NULL) {
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// <flag>=xxx form
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// [-|+]<flag> form
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if ((strncmp(obsolete_jvm_flags_1_5_0[i], s,
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strlen(obsolete_jvm_flags_1_5_0[i])) == 0) ||
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((s[0] == '+' || s[0] == '-') &&
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(strncmp(obsolete_jvm_flags_1_5_0[i], &s[1],
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strlen(obsolete_jvm_flags_1_5_0[i])) == 0))) {
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return true;
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}
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i++;
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}
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return false;
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}
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// Constructs the system class path (aka boot class path) from the following
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// components, in order:
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//
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// prefix // from -Xbootclasspath/p:...
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// endorsed // the expansion of -Djava.endorsed.dirs=...
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// base // from os::get_system_properties() or -Xbootclasspath=
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// suffix // from -Xbootclasspath/a:...
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//
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// java.endorsed.dirs is a list of directories; any jar or zip files in the
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// directories are added to the sysclasspath just before the base.
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//
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// This could be AllStatic, but it isn't needed after argument processing is
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// complete.
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class SysClassPath: public StackObj {
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public:
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SysClassPath(const char* base);
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~SysClassPath();
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inline void set_base(const char* base);
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inline void add_prefix(const char* prefix);
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inline void add_suffix(const char* suffix);
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inline void reset_path(const char* base);
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// Expand the jar/zip files in each directory listed by the java.endorsed.dirs
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// property. Must be called after all command-line arguments have been
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// processed (in particular, -Djava.endorsed.dirs=...) and before calling
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// combined_path().
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void expand_endorsed();
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inline const char* get_base() const { return _items[_scp_base]; }
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inline const char* get_prefix() const { return _items[_scp_prefix]; }
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inline const char* get_suffix() const { return _items[_scp_suffix]; }
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inline const char* get_endorsed() const { return _items[_scp_endorsed]; }
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// Combine all the components into a single c-heap-allocated string; caller
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// must free the string if/when no longer needed.
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char* combined_path();
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private:
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// Utility routines.
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static char* add_to_path(const char* path, const char* str, bool prepend);
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static char* add_jars_to_path(char* path, const char* directory);
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inline void reset_item_at(int index);
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// Array indices for the items that make up the sysclasspath. All except the
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// base are allocated in the C heap and freed by this class.
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enum {
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_scp_prefix, // from -Xbootclasspath/p:...
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_scp_endorsed, // the expansion of -Djava.endorsed.dirs=...
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_scp_base, // the default sysclasspath
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_scp_suffix, // from -Xbootclasspath/a:...
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_scp_nitems // the number of items, must be last.
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};
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const char* _items[_scp_nitems];
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DEBUG_ONLY(bool _expansion_done;)
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};
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SysClassPath::SysClassPath(const char* base) {
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memset(_items, 0, sizeof(_items));
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_items[_scp_base] = base;
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DEBUG_ONLY(_expansion_done = false;)
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}
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SysClassPath::~SysClassPath() {
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// Free everything except the base.
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for (int i = 0; i < _scp_nitems; ++i) {
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if (i != _scp_base) reset_item_at(i);
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}
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DEBUG_ONLY(_expansion_done = false;)
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}
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inline void SysClassPath::set_base(const char* base) {
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_items[_scp_base] = base;
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}
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inline void SysClassPath::add_prefix(const char* prefix) {
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_items[_scp_prefix] = add_to_path(_items[_scp_prefix], prefix, true);
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}
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inline void SysClassPath::add_suffix(const char* suffix) {
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_items[_scp_suffix] = add_to_path(_items[_scp_suffix], suffix, false);
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}
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inline void SysClassPath::reset_item_at(int index) {
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assert(index < _scp_nitems && index != _scp_base, "just checking");
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if (_items[index] != NULL) {
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FREE_C_HEAP_ARRAY(char, _items[index]);
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_items[index] = NULL;
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}
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}
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inline void SysClassPath::reset_path(const char* base) {
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// Clear the prefix and suffix.
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reset_item_at(_scp_prefix);
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reset_item_at(_scp_suffix);
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set_base(base);
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}
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//------------------------------------------------------------------------------
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void SysClassPath::expand_endorsed() {
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assert(_items[_scp_endorsed] == NULL, "can only be called once.");
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const char* path = Arguments::get_property("java.endorsed.dirs");
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if (path == NULL) {
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path = Arguments::get_endorsed_dir();
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assert(path != NULL, "no default for java.endorsed.dirs");
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}
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char* expanded_path = NULL;
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const char separator = *os::path_separator();
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const char* const end = path + strlen(path);
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while (path < end) {
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const char* tmp_end = strchr(path, separator);
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if (tmp_end == NULL) {
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expanded_path = add_jars_to_path(expanded_path, path);
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path = end;
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} else {
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char* dirpath = NEW_C_HEAP_ARRAY(char, tmp_end - path + 1);
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memcpy(dirpath, path, tmp_end - path);
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dirpath[tmp_end - path] = '\0';
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expanded_path = add_jars_to_path(expanded_path, dirpath);
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FREE_C_HEAP_ARRAY(char, dirpath);
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path = tmp_end + 1;
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}
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}
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_items[_scp_endorsed] = expanded_path;
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DEBUG_ONLY(_expansion_done = true;)
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}
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// Combine the bootclasspath elements, some of which may be null, into a single
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// c-heap-allocated string.
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char* SysClassPath::combined_path() {
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assert(_items[_scp_base] != NULL, "empty default sysclasspath");
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assert(_expansion_done, "must call expand_endorsed() first.");
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size_t lengths[_scp_nitems];
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size_t total_len = 0;
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const char separator = *os::path_separator();
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// Get the lengths.
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int i;
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for (i = 0; i < _scp_nitems; ++i) {
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if (_items[i] != NULL) {
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lengths[i] = strlen(_items[i]);
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// Include space for the separator char (or a NULL for the last item).
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total_len += lengths[i] + 1;
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}
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}
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assert(total_len > 0, "empty sysclasspath not allowed");
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// Copy the _items to a single string.
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char* cp = NEW_C_HEAP_ARRAY(char, total_len);
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char* cp_tmp = cp;
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for (i = 0; i < _scp_nitems; ++i) {
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if (_items[i] != NULL) {
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memcpy(cp_tmp, _items[i], lengths[i]);
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cp_tmp += lengths[i];
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*cp_tmp++ = separator;
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}
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}
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*--cp_tmp = '\0'; // Replace the extra separator.
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return cp;
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}
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// Note: path must be c-heap-allocated (or NULL); it is freed if non-null.
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char*
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SysClassPath::add_to_path(const char* path, const char* str, bool prepend) {
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char *cp;
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assert(str != NULL, "just checking");
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if (path == NULL) {
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size_t len = strlen(str) + 1;
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cp = NEW_C_HEAP_ARRAY(char, len);
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memcpy(cp, str, len); // copy the trailing null
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} else {
|
|
372 |
const char separator = *os::path_separator();
|
|
373 |
size_t old_len = strlen(path);
|
|
374 |
size_t str_len = strlen(str);
|
|
375 |
size_t len = old_len + str_len + 2;
|
|
376 |
|
|
377 |
if (prepend) {
|
|
378 |
cp = NEW_C_HEAP_ARRAY(char, len);
|
|
379 |
char* cp_tmp = cp;
|
|
380 |
memcpy(cp_tmp, str, str_len);
|
|
381 |
cp_tmp += str_len;
|
|
382 |
*cp_tmp = separator;
|
|
383 |
memcpy(++cp_tmp, path, old_len + 1); // copy the trailing null
|
|
384 |
FREE_C_HEAP_ARRAY(char, path);
|
|
385 |
} else {
|
|
386 |
cp = REALLOC_C_HEAP_ARRAY(char, path, len);
|
|
387 |
char* cp_tmp = cp + old_len;
|
|
388 |
*cp_tmp = separator;
|
|
389 |
memcpy(++cp_tmp, str, str_len + 1); // copy the trailing null
|
|
390 |
}
|
|
391 |
}
|
|
392 |
return cp;
|
|
393 |
}
|
|
394 |
|
|
395 |
// Scan the directory and append any jar or zip files found to path.
|
|
396 |
// Note: path must be c-heap-allocated (or NULL); it is freed if non-null.
|
|
397 |
char* SysClassPath::add_jars_to_path(char* path, const char* directory) {
|
|
398 |
DIR* dir = os::opendir(directory);
|
|
399 |
if (dir == NULL) return path;
|
|
400 |
|
|
401 |
char dir_sep[2] = { '\0', '\0' };
|
|
402 |
size_t directory_len = strlen(directory);
|
|
403 |
const char fileSep = *os::file_separator();
|
|
404 |
if (directory[directory_len - 1] != fileSep) dir_sep[0] = fileSep;
|
|
405 |
|
|
406 |
/* Scan the directory for jars/zips, appending them to path. */
|
|
407 |
struct dirent *entry;
|
|
408 |
char *dbuf = NEW_C_HEAP_ARRAY(char, os::readdir_buf_size(directory));
|
|
409 |
while ((entry = os::readdir(dir, (dirent *) dbuf)) != NULL) {
|
|
410 |
const char* name = entry->d_name;
|
|
411 |
const char* ext = name + strlen(name) - 4;
|
|
412 |
bool isJarOrZip = ext > name &&
|
|
413 |
(os::file_name_strcmp(ext, ".jar") == 0 ||
|
|
414 |
os::file_name_strcmp(ext, ".zip") == 0);
|
|
415 |
if (isJarOrZip) {
|
|
416 |
char* jarpath = NEW_C_HEAP_ARRAY(char, directory_len + 2 + strlen(name));
|
|
417 |
sprintf(jarpath, "%s%s%s", directory, dir_sep, name);
|
|
418 |
path = add_to_path(path, jarpath, false);
|
|
419 |
FREE_C_HEAP_ARRAY(char, jarpath);
|
|
420 |
}
|
|
421 |
}
|
|
422 |
FREE_C_HEAP_ARRAY(char, dbuf);
|
|
423 |
os::closedir(dir);
|
|
424 |
return path;
|
|
425 |
}
|
|
426 |
|
|
427 |
// Parses a memory size specification string.
|
|
428 |
static bool atomll(const char *s, jlong* result) {
|
|
429 |
jlong n = 0;
|
|
430 |
int args_read = sscanf(s, os::jlong_format_specifier(), &n);
|
|
431 |
if (args_read != 1) {
|
|
432 |
return false;
|
|
433 |
}
|
|
434 |
while (*s != '\0' && isdigit(*s)) {
|
|
435 |
s++;
|
|
436 |
}
|
|
437 |
// 4705540: illegal if more characters are found after the first non-digit
|
|
438 |
if (strlen(s) > 1) {
|
|
439 |
return false;
|
|
440 |
}
|
|
441 |
switch (*s) {
|
|
442 |
case 'T': case 't':
|
|
443 |
*result = n * G * K;
|
|
444 |
return true;
|
|
445 |
case 'G': case 'g':
|
|
446 |
*result = n * G;
|
|
447 |
return true;
|
|
448 |
case 'M': case 'm':
|
|
449 |
*result = n * M;
|
|
450 |
return true;
|
|
451 |
case 'K': case 'k':
|
|
452 |
*result = n * K;
|
|
453 |
return true;
|
|
454 |
case '\0':
|
|
455 |
*result = n;
|
|
456 |
return true;
|
|
457 |
default:
|
|
458 |
return false;
|
|
459 |
}
|
|
460 |
}
|
|
461 |
|
|
462 |
Arguments::ArgsRange Arguments::check_memory_size(jlong size, jlong min_size) {
|
|
463 |
if (size < min_size) return arg_too_small;
|
|
464 |
// Check that size will fit in a size_t (only relevant on 32-bit)
|
|
465 |
if ((julong) size > max_uintx) return arg_too_big;
|
|
466 |
return arg_in_range;
|
|
467 |
}
|
|
468 |
|
|
469 |
// Describe an argument out of range error
|
|
470 |
void Arguments::describe_range_error(ArgsRange errcode) {
|
|
471 |
switch(errcode) {
|
|
472 |
case arg_too_big:
|
|
473 |
jio_fprintf(defaultStream::error_stream(),
|
|
474 |
"The specified size exceeds the maximum "
|
|
475 |
"representable size.\n");
|
|
476 |
break;
|
|
477 |
case arg_too_small:
|
|
478 |
case arg_unreadable:
|
|
479 |
case arg_in_range:
|
|
480 |
// do nothing for now
|
|
481 |
break;
|
|
482 |
default:
|
|
483 |
ShouldNotReachHere();
|
|
484 |
}
|
|
485 |
}
|
|
486 |
|
|
487 |
static bool set_bool_flag(char* name, bool value, FlagValueOrigin origin) {
|
|
488 |
return CommandLineFlags::boolAtPut(name, &value, origin);
|
|
489 |
}
|
|
490 |
|
|
491 |
|
|
492 |
static bool set_fp_numeric_flag(char* name, char* value, FlagValueOrigin origin) {
|
|
493 |
double v;
|
|
494 |
if (sscanf(value, "%lf", &v) != 1) {
|
|
495 |
return false;
|
|
496 |
}
|
|
497 |
|
|
498 |
if (CommandLineFlags::doubleAtPut(name, &v, origin)) {
|
|
499 |
return true;
|
|
500 |
}
|
|
501 |
return false;
|
|
502 |
}
|
|
503 |
|
|
504 |
|
|
505 |
static bool set_numeric_flag(char* name, char* value, FlagValueOrigin origin) {
|
|
506 |
jlong v;
|
|
507 |
intx intx_v;
|
|
508 |
bool is_neg = false;
|
|
509 |
// Check the sign first since atomll() parses only unsigned values.
|
|
510 |
if (*value == '-') {
|
|
511 |
if (!CommandLineFlags::intxAt(name, &intx_v)) {
|
|
512 |
return false;
|
|
513 |
}
|
|
514 |
value++;
|
|
515 |
is_neg = true;
|
|
516 |
}
|
|
517 |
if (!atomll(value, &v)) {
|
|
518 |
return false;
|
|
519 |
}
|
|
520 |
intx_v = (intx) v;
|
|
521 |
if (is_neg) {
|
|
522 |
intx_v = -intx_v;
|
|
523 |
}
|
|
524 |
if (CommandLineFlags::intxAtPut(name, &intx_v, origin)) {
|
|
525 |
return true;
|
|
526 |
}
|
|
527 |
uintx uintx_v = (uintx) v;
|
|
528 |
if (!is_neg && CommandLineFlags::uintxAtPut(name, &uintx_v, origin)) {
|
|
529 |
return true;
|
|
530 |
}
|
|
531 |
return false;
|
|
532 |
}
|
|
533 |
|
|
534 |
|
|
535 |
static bool set_string_flag(char* name, const char* value, FlagValueOrigin origin) {
|
|
536 |
if (!CommandLineFlags::ccstrAtPut(name, &value, origin)) return false;
|
|
537 |
// Contract: CommandLineFlags always returns a pointer that needs freeing.
|
|
538 |
FREE_C_HEAP_ARRAY(char, value);
|
|
539 |
return true;
|
|
540 |
}
|
|
541 |
|
|
542 |
static bool append_to_string_flag(char* name, const char* new_value, FlagValueOrigin origin) {
|
|
543 |
const char* old_value = "";
|
|
544 |
if (!CommandLineFlags::ccstrAt(name, &old_value)) return false;
|
|
545 |
size_t old_len = old_value != NULL ? strlen(old_value) : 0;
|
|
546 |
size_t new_len = strlen(new_value);
|
|
547 |
const char* value;
|
|
548 |
char* free_this_too = NULL;
|
|
549 |
if (old_len == 0) {
|
|
550 |
value = new_value;
|
|
551 |
} else if (new_len == 0) {
|
|
552 |
value = old_value;
|
|
553 |
} else {
|
|
554 |
char* buf = NEW_C_HEAP_ARRAY(char, old_len + 1 + new_len + 1);
|
|
555 |
// each new setting adds another LINE to the switch:
|
|
556 |
sprintf(buf, "%s\n%s", old_value, new_value);
|
|
557 |
value = buf;
|
|
558 |
free_this_too = buf;
|
|
559 |
}
|
|
560 |
(void) CommandLineFlags::ccstrAtPut(name, &value, origin);
|
|
561 |
// CommandLineFlags always returns a pointer that needs freeing.
|
|
562 |
FREE_C_HEAP_ARRAY(char, value);
|
|
563 |
if (free_this_too != NULL) {
|
|
564 |
// CommandLineFlags made its own copy, so I must delete my own temp. buffer.
|
|
565 |
FREE_C_HEAP_ARRAY(char, free_this_too);
|
|
566 |
}
|
|
567 |
return true;
|
|
568 |
}
|
|
569 |
|
|
570 |
|
|
571 |
bool Arguments::parse_argument(const char* arg, FlagValueOrigin origin) {
|
|
572 |
|
|
573 |
// range of acceptable characters spelled out for portability reasons
|
|
574 |
#define NAME_RANGE "[abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789_]"
|
|
575 |
#define BUFLEN 255
|
|
576 |
char name[BUFLEN+1];
|
|
577 |
char dummy;
|
|
578 |
|
|
579 |
if (sscanf(arg, "-%" XSTR(BUFLEN) NAME_RANGE "%c", name, &dummy) == 1) {
|
|
580 |
return set_bool_flag(name, false, origin);
|
|
581 |
}
|
|
582 |
if (sscanf(arg, "+%" XSTR(BUFLEN) NAME_RANGE "%c", name, &dummy) == 1) {
|
|
583 |
return set_bool_flag(name, true, origin);
|
|
584 |
}
|
|
585 |
|
|
586 |
char punct;
|
|
587 |
if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE "%c", name, &punct) == 2 && punct == '=') {
|
|
588 |
const char* value = strchr(arg, '=') + 1;
|
|
589 |
Flag* flag = Flag::find_flag(name, strlen(name));
|
|
590 |
if (flag != NULL && flag->is_ccstr()) {
|
|
591 |
if (flag->ccstr_accumulates()) {
|
|
592 |
return append_to_string_flag(name, value, origin);
|
|
593 |
} else {
|
|
594 |
if (value[0] == '\0') {
|
|
595 |
value = NULL;
|
|
596 |
}
|
|
597 |
return set_string_flag(name, value, origin);
|
|
598 |
}
|
|
599 |
}
|
|
600 |
}
|
|
601 |
|
|
602 |
if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE ":%c", name, &punct) == 2 && punct == '=') {
|
|
603 |
const char* value = strchr(arg, '=') + 1;
|
|
604 |
// -XX:Foo:=xxx will reset the string flag to the given value.
|
|
605 |
if (value[0] == '\0') {
|
|
606 |
value = NULL;
|
|
607 |
}
|
|
608 |
return set_string_flag(name, value, origin);
|
|
609 |
}
|
|
610 |
|
|
611 |
#define SIGNED_FP_NUMBER_RANGE "[-0123456789.]"
|
|
612 |
#define SIGNED_NUMBER_RANGE "[-0123456789]"
|
|
613 |
#define NUMBER_RANGE "[0123456789]"
|
|
614 |
char value[BUFLEN + 1];
|
|
615 |
char value2[BUFLEN + 1];
|
|
616 |
if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE "=" "%" XSTR(BUFLEN) SIGNED_NUMBER_RANGE "." "%" XSTR(BUFLEN) NUMBER_RANGE "%c", name, value, value2, &dummy) == 3) {
|
|
617 |
// Looks like a floating-point number -- try again with more lenient format string
|
|
618 |
if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE "=" "%" XSTR(BUFLEN) SIGNED_FP_NUMBER_RANGE "%c", name, value, &dummy) == 2) {
|
|
619 |
return set_fp_numeric_flag(name, value, origin);
|
|
620 |
}
|
|
621 |
}
|
|
622 |
|
|
623 |
#define VALUE_RANGE "[-kmgtKMGT0123456789]"
|
|
624 |
if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE "=" "%" XSTR(BUFLEN) VALUE_RANGE "%c", name, value, &dummy) == 2) {
|
|
625 |
return set_numeric_flag(name, value, origin);
|
|
626 |
}
|
|
627 |
|
|
628 |
return false;
|
|
629 |
}
|
|
630 |
|
|
631 |
|
|
632 |
void Arguments::add_string(char*** bldarray, int* count, const char* arg) {
|
|
633 |
assert(bldarray != NULL, "illegal argument");
|
|
634 |
|
|
635 |
if (arg == NULL) {
|
|
636 |
return;
|
|
637 |
}
|
|
638 |
|
|
639 |
int index = *count;
|
|
640 |
|
|
641 |
// expand the array and add arg to the last element
|
|
642 |
(*count)++;
|
|
643 |
if (*bldarray == NULL) {
|
|
644 |
*bldarray = NEW_C_HEAP_ARRAY(char*, *count);
|
|
645 |
} else {
|
|
646 |
*bldarray = REALLOC_C_HEAP_ARRAY(char*, *bldarray, *count);
|
|
647 |
}
|
|
648 |
(*bldarray)[index] = strdup(arg);
|
|
649 |
}
|
|
650 |
|
|
651 |
void Arguments::build_jvm_args(const char* arg) {
|
|
652 |
add_string(&_jvm_args_array, &_num_jvm_args, arg);
|
|
653 |
}
|
|
654 |
|
|
655 |
void Arguments::build_jvm_flags(const char* arg) {
|
|
656 |
add_string(&_jvm_flags_array, &_num_jvm_flags, arg);
|
|
657 |
}
|
|
658 |
|
|
659 |
// utility function to return a string that concatenates all
|
|
660 |
// strings in a given char** array
|
|
661 |
const char* Arguments::build_resource_string(char** args, int count) {
|
|
662 |
if (args == NULL || count == 0) {
|
|
663 |
return NULL;
|
|
664 |
}
|
|
665 |
size_t length = strlen(args[0]) + 1; // add 1 for the null terminator
|
|
666 |
for (int i = 1; i < count; i++) {
|
|
667 |
length += strlen(args[i]) + 1; // add 1 for a space
|
|
668 |
}
|
|
669 |
char* s = NEW_RESOURCE_ARRAY(char, length);
|
|
670 |
strcpy(s, args[0]);
|
|
671 |
for (int j = 1; j < count; j++) {
|
|
672 |
strcat(s, " ");
|
|
673 |
strcat(s, args[j]);
|
|
674 |
}
|
|
675 |
return (const char*) s;
|
|
676 |
}
|
|
677 |
|
|
678 |
void Arguments::print_on(outputStream* st) {
|
|
679 |
st->print_cr("VM Arguments:");
|
|
680 |
if (num_jvm_flags() > 0) {
|
|
681 |
st->print("jvm_flags: "); print_jvm_flags_on(st);
|
|
682 |
}
|
|
683 |
if (num_jvm_args() > 0) {
|
|
684 |
st->print("jvm_args: "); print_jvm_args_on(st);
|
|
685 |
}
|
|
686 |
st->print_cr("java_command: %s", java_command() ? java_command() : "<unknown>");
|
|
687 |
st->print_cr("Launcher Type: %s", _sun_java_launcher);
|
|
688 |
}
|
|
689 |
|
|
690 |
void Arguments::print_jvm_flags_on(outputStream* st) {
|
|
691 |
if (_num_jvm_flags > 0) {
|
|
692 |
for (int i=0; i < _num_jvm_flags; i++) {
|
|
693 |
st->print("%s ", _jvm_flags_array[i]);
|
|
694 |
}
|
|
695 |
st->print_cr("");
|
|
696 |
}
|
|
697 |
}
|
|
698 |
|
|
699 |
void Arguments::print_jvm_args_on(outputStream* st) {
|
|
700 |
if (_num_jvm_args > 0) {
|
|
701 |
for (int i=0; i < _num_jvm_args; i++) {
|
|
702 |
st->print("%s ", _jvm_args_array[i]);
|
|
703 |
}
|
|
704 |
st->print_cr("");
|
|
705 |
}
|
|
706 |
}
|
|
707 |
|
|
708 |
bool Arguments::process_argument(const char* arg, jboolean ignore_unrecognized, FlagValueOrigin origin) {
|
|
709 |
|
|
710 |
if (parse_argument(arg, origin)) {
|
|
711 |
// do nothing
|
|
712 |
} else if (made_obsolete_in_1_5_0(arg)) {
|
|
713 |
jio_fprintf(defaultStream::error_stream(),
|
|
714 |
"Warning: The flag %s has been EOL'd as of 1.5.0 and will"
|
|
715 |
" be ignored\n", arg);
|
|
716 |
} else {
|
|
717 |
if (!ignore_unrecognized) {
|
|
718 |
jio_fprintf(defaultStream::error_stream(),
|
|
719 |
"Unrecognized VM option '%s'\n", arg);
|
|
720 |
// allow for commandline "commenting out" options like -XX:#+Verbose
|
|
721 |
if (strlen(arg) == 0 || arg[0] != '#') {
|
|
722 |
return false;
|
|
723 |
}
|
|
724 |
}
|
|
725 |
}
|
|
726 |
return true;
|
|
727 |
}
|
|
728 |
|
|
729 |
|
|
730 |
bool Arguments::process_settings_file(const char* file_name, bool should_exist, jboolean ignore_unrecognized) {
|
|
731 |
FILE* stream = fopen(file_name, "rb");
|
|
732 |
if (stream == NULL) {
|
|
733 |
if (should_exist) {
|
|
734 |
jio_fprintf(defaultStream::error_stream(),
|
|
735 |
"Could not open settings file %s\n", file_name);
|
|
736 |
return false;
|
|
737 |
} else {
|
|
738 |
return true;
|
|
739 |
}
|
|
740 |
}
|
|
741 |
|
|
742 |
char token[1024];
|
|
743 |
int pos = 0;
|
|
744 |
|
|
745 |
bool in_white_space = true;
|
|
746 |
bool in_comment = false;
|
|
747 |
bool in_quote = false;
|
|
748 |
char quote_c = 0;
|
|
749 |
bool result = true;
|
|
750 |
|
|
751 |
int c = getc(stream);
|
|
752 |
while(c != EOF) {
|
|
753 |
if (in_white_space) {
|
|
754 |
if (in_comment) {
|
|
755 |
if (c == '\n') in_comment = false;
|
|
756 |
} else {
|
|
757 |
if (c == '#') in_comment = true;
|
|
758 |
else if (!isspace(c)) {
|
|
759 |
in_white_space = false;
|
|
760 |
token[pos++] = c;
|
|
761 |
}
|
|
762 |
}
|
|
763 |
} else {
|
|
764 |
if (c == '\n' || (!in_quote && isspace(c))) {
|
|
765 |
// token ends at newline, or at unquoted whitespace
|
|
766 |
// this allows a way to include spaces in string-valued options
|
|
767 |
token[pos] = '\0';
|
|
768 |
logOption(token);
|
|
769 |
result &= process_argument(token, ignore_unrecognized, CONFIG_FILE);
|
|
770 |
build_jvm_flags(token);
|
|
771 |
pos = 0;
|
|
772 |
in_white_space = true;
|
|
773 |
in_quote = false;
|
|
774 |
} else if (!in_quote && (c == '\'' || c == '"')) {
|
|
775 |
in_quote = true;
|
|
776 |
quote_c = c;
|
|
777 |
} else if (in_quote && (c == quote_c)) {
|
|
778 |
in_quote = false;
|
|
779 |
} else {
|
|
780 |
token[pos++] = c;
|
|
781 |
}
|
|
782 |
}
|
|
783 |
c = getc(stream);
|
|
784 |
}
|
|
785 |
if (pos > 0) {
|
|
786 |
token[pos] = '\0';
|
|
787 |
result &= process_argument(token, ignore_unrecognized, CONFIG_FILE);
|
|
788 |
build_jvm_flags(token);
|
|
789 |
}
|
|
790 |
fclose(stream);
|
|
791 |
return result;
|
|
792 |
}
|
|
793 |
|
|
794 |
//=============================================================================================================
|
|
795 |
// Parsing of properties (-D)
|
|
796 |
|
|
797 |
const char* Arguments::get_property(const char* key) {
|
|
798 |
return PropertyList_get_value(system_properties(), key);
|
|
799 |
}
|
|
800 |
|
|
801 |
bool Arguments::add_property(const char* prop) {
|
|
802 |
const char* eq = strchr(prop, '=');
|
|
803 |
char* key;
|
|
804 |
// ns must be static--its address may be stored in a SystemProperty object.
|
|
805 |
const static char ns[1] = {0};
|
|
806 |
char* value = (char *)ns;
|
|
807 |
|
|
808 |
size_t key_len = (eq == NULL) ? strlen(prop) : (eq - prop);
|
|
809 |
key = AllocateHeap(key_len + 1, "add_property");
|
|
810 |
strncpy(key, prop, key_len);
|
|
811 |
key[key_len] = '\0';
|
|
812 |
|
|
813 |
if (eq != NULL) {
|
|
814 |
size_t value_len = strlen(prop) - key_len - 1;
|
|
815 |
value = AllocateHeap(value_len + 1, "add_property");
|
|
816 |
strncpy(value, &prop[key_len + 1], value_len + 1);
|
|
817 |
}
|
|
818 |
|
|
819 |
if (strcmp(key, "java.compiler") == 0) {
|
|
820 |
process_java_compiler_argument(value);
|
|
821 |
FreeHeap(key);
|
|
822 |
if (eq != NULL) {
|
|
823 |
FreeHeap(value);
|
|
824 |
}
|
|
825 |
return true;
|
|
826 |
}
|
|
827 |
else if (strcmp(key, "sun.java.command") == 0) {
|
|
828 |
|
|
829 |
_java_command = value;
|
|
830 |
|
|
831 |
// don't add this property to the properties exposed to the java application
|
|
832 |
FreeHeap(key);
|
|
833 |
return true;
|
|
834 |
}
|
|
835 |
else if (strcmp(key, "sun.java.launcher.pid") == 0) {
|
|
836 |
// launcher.pid property is private and is processed
|
|
837 |
// in process_sun_java_launcher_properties();
|
|
838 |
// the sun.java.launcher property is passed on to the java application
|
|
839 |
FreeHeap(key);
|
|
840 |
if (eq != NULL) {
|
|
841 |
FreeHeap(value);
|
|
842 |
}
|
|
843 |
return true;
|
|
844 |
}
|
|
845 |
else if (strcmp(key, "java.vendor.url.bug") == 0) {
|
|
846 |
// save it in _java_vendor_url_bug, so JVM fatal error handler can access
|
|
847 |
// its value without going through the property list or making a Java call.
|
|
848 |
_java_vendor_url_bug = value;
|
|
849 |
}
|
|
850 |
|
|
851 |
// Create new property and add at the end of the list
|
|
852 |
PropertyList_unique_add(&_system_properties, key, value);
|
|
853 |
return true;
|
|
854 |
}
|
|
855 |
|
|
856 |
//===========================================================================================================
|
|
857 |
// Setting int/mixed/comp mode flags
|
|
858 |
|
|
859 |
void Arguments::set_mode_flags(Mode mode) {
|
|
860 |
// Set up default values for all flags.
|
|
861 |
// If you add a flag to any of the branches below,
|
|
862 |
// add a default value for it here.
|
|
863 |
set_java_compiler(false);
|
|
864 |
_mode = mode;
|
|
865 |
|
|
866 |
// Ensure Agent_OnLoad has the correct initial values.
|
|
867 |
// This may not be the final mode; mode may change later in onload phase.
|
|
868 |
PropertyList_unique_add(&_system_properties, "java.vm.info",
|
|
869 |
(char*)Abstract_VM_Version::vm_info_string());
|
|
870 |
|
|
871 |
UseInterpreter = true;
|
|
872 |
UseCompiler = true;
|
|
873 |
UseLoopCounter = true;
|
|
874 |
|
|
875 |
// Default values may be platform/compiler dependent -
|
|
876 |
// use the saved values
|
|
877 |
ClipInlining = Arguments::_ClipInlining;
|
|
878 |
AlwaysCompileLoopMethods = Arguments::_AlwaysCompileLoopMethods;
|
|
879 |
UseOnStackReplacement = Arguments::_UseOnStackReplacement;
|
|
880 |
BackgroundCompilation = Arguments::_BackgroundCompilation;
|
|
881 |
Tier2CompileThreshold = Arguments::_Tier2CompileThreshold;
|
|
882 |
|
|
883 |
// Change from defaults based on mode
|
|
884 |
switch (mode) {
|
|
885 |
default:
|
|
886 |
ShouldNotReachHere();
|
|
887 |
break;
|
|
888 |
case _int:
|
|
889 |
UseCompiler = false;
|
|
890 |
UseLoopCounter = false;
|
|
891 |
AlwaysCompileLoopMethods = false;
|
|
892 |
UseOnStackReplacement = false;
|
|
893 |
break;
|
|
894 |
case _mixed:
|
|
895 |
// same as default
|
|
896 |
break;
|
|
897 |
case _comp:
|
|
898 |
UseInterpreter = false;
|
|
899 |
BackgroundCompilation = false;
|
|
900 |
ClipInlining = false;
|
|
901 |
break;
|
|
902 |
}
|
|
903 |
}
|
|
904 |
|
|
905 |
|
|
906 |
// Conflict: required to use shared spaces (-Xshare:on), but
|
|
907 |
// incompatible command line options were chosen.
|
|
908 |
|
|
909 |
static void no_shared_spaces() {
|
|
910 |
if (RequireSharedSpaces) {
|
|
911 |
jio_fprintf(defaultStream::error_stream(),
|
|
912 |
"Class data sharing is inconsistent with other specified options.\n");
|
|
913 |
vm_exit_during_initialization("Unable to use shared archive.", NULL);
|
|
914 |
} else {
|
|
915 |
FLAG_SET_DEFAULT(UseSharedSpaces, false);
|
|
916 |
}
|
|
917 |
}
|
|
918 |
|
|
919 |
|
|
920 |
// If the user has chosen ParallelGCThreads > 0, we set UseParNewGC
|
|
921 |
// if it's not explictly set or unset. If the user has chosen
|
|
922 |
// UseParNewGC and not explicitly set ParallelGCThreads we
|
|
923 |
// set it, unless this is a single cpu machine.
|
|
924 |
void Arguments::set_parnew_gc_flags() {
|
|
925 |
assert(!UseSerialGC && !UseParallelGC, "control point invariant");
|
|
926 |
|
|
927 |
if (FLAG_IS_DEFAULT(UseParNewGC) && ParallelGCThreads > 1) {
|
|
928 |
FLAG_SET_DEFAULT(UseParNewGC, true);
|
|
929 |
} else if (UseParNewGC && ParallelGCThreads == 0) {
|
|
930 |
FLAG_SET_DEFAULT(ParallelGCThreads, nof_parallel_gc_threads());
|
|
931 |
if (FLAG_IS_DEFAULT(ParallelGCThreads) && ParallelGCThreads == 1) {
|
|
932 |
FLAG_SET_DEFAULT(UseParNewGC, false);
|
|
933 |
}
|
|
934 |
}
|
|
935 |
if (!UseParNewGC) {
|
|
936 |
FLAG_SET_DEFAULT(ParallelGCThreads, 0);
|
|
937 |
} else {
|
|
938 |
no_shared_spaces();
|
|
939 |
|
|
940 |
// By default YoungPLABSize and OldPLABSize are set to 4096 and 1024 correspondinly,
|
|
941 |
// these settings are default for Parallel Scavenger. For ParNew+Tenured configuration
|
|
942 |
// we set them to 1024 and 1024.
|
|
943 |
// See CR 6362902.
|
|
944 |
if (FLAG_IS_DEFAULT(YoungPLABSize)) {
|
|
945 |
FLAG_SET_DEFAULT(YoungPLABSize, (intx)1024);
|
|
946 |
}
|
|
947 |
if (FLAG_IS_DEFAULT(OldPLABSize)) {
|
|
948 |
FLAG_SET_DEFAULT(OldPLABSize, (intx)1024);
|
|
949 |
}
|
|
950 |
|
|
951 |
// AlwaysTenure flag should make ParNew to promote all at first collection.
|
|
952 |
// See CR 6362902.
|
|
953 |
if (AlwaysTenure) {
|
|
954 |
FLAG_SET_CMDLINE(intx, MaxTenuringThreshold, 0);
|
|
955 |
}
|
|
956 |
}
|
|
957 |
}
|
|
958 |
|
|
959 |
// CAUTION: this code is currently shared by UseParallelGC, UseParNewGC and
|
|
960 |
// UseconcMarkSweepGC. Further tuning of individual collectors might
|
|
961 |
// dictate refinement on a per-collector basis.
|
|
962 |
int Arguments::nof_parallel_gc_threads() {
|
|
963 |
if (FLAG_IS_DEFAULT(ParallelGCThreads)) {
|
|
964 |
// For very large machines, there are diminishing returns
|
|
965 |
// for large numbers of worker threads. Instead of
|
|
966 |
// hogging the whole system, use 5/8ths of a worker for every
|
|
967 |
// processor after the first 8. For example, on a 72 cpu
|
|
968 |
// machine use 8 + (72 - 8) * (5/8) == 48 worker threads.
|
|
969 |
// This is just a start and needs further tuning and study in
|
|
970 |
// Tiger.
|
|
971 |
int ncpus = os::active_processor_count();
|
|
972 |
return (ncpus <= 8) ? ncpus : 3 + ((ncpus * 5) / 8);
|
|
973 |
} else {
|
|
974 |
return ParallelGCThreads;
|
|
975 |
}
|
|
976 |
}
|
|
977 |
|
|
978 |
// Adjust some sizes to suit CMS and/or ParNew needs; these work well on
|
|
979 |
// sparc/solaris for certain applications, but would gain from
|
|
980 |
// further optimization and tuning efforts, and would almost
|
|
981 |
// certainly gain from analysis of platform and environment.
|
|
982 |
void Arguments::set_cms_and_parnew_gc_flags() {
|
|
983 |
if (UseSerialGC || UseParallelGC) {
|
|
984 |
return;
|
|
985 |
}
|
|
986 |
|
|
987 |
// If we are using CMS, we prefer to UseParNewGC,
|
|
988 |
// unless explicitly forbidden.
|
|
989 |
if (UseConcMarkSweepGC && !UseParNewGC && FLAG_IS_DEFAULT(UseParNewGC)) {
|
|
990 |
FLAG_SET_DEFAULT(UseParNewGC, true);
|
|
991 |
}
|
|
992 |
|
|
993 |
// Turn off AdaptiveSizePolicy by default for cms until it is
|
|
994 |
// complete. Also turn it off in general if the
|
|
995 |
// parnew collector has been selected.
|
|
996 |
if ((UseConcMarkSweepGC || UseParNewGC) &&
|
|
997 |
FLAG_IS_DEFAULT(UseAdaptiveSizePolicy)) {
|
|
998 |
FLAG_SET_DEFAULT(UseAdaptiveSizePolicy, false);
|
|
999 |
}
|
|
1000 |
|
|
1001 |
// In either case, adjust ParallelGCThreads and/or UseParNewGC
|
|
1002 |
// as needed.
|
|
1003 |
set_parnew_gc_flags();
|
|
1004 |
|
|
1005 |
if (!UseConcMarkSweepGC) {
|
|
1006 |
return;
|
|
1007 |
}
|
|
1008 |
|
|
1009 |
// Now make adjustments for CMS
|
|
1010 |
size_t young_gen_per_worker;
|
|
1011 |
intx new_ratio;
|
|
1012 |
size_t min_new_default;
|
|
1013 |
intx tenuring_default;
|
|
1014 |
if (CMSUseOldDefaults) { // old defaults: "old" as of 6.0
|
|
1015 |
if FLAG_IS_DEFAULT(CMSYoungGenPerWorker) {
|
|
1016 |
FLAG_SET_DEFAULT(CMSYoungGenPerWorker, 4*M);
|
|
1017 |
}
|
|
1018 |
young_gen_per_worker = 4*M;
|
|
1019 |
new_ratio = (intx)15;
|
|
1020 |
min_new_default = 4*M;
|
|
1021 |
tenuring_default = (intx)0;
|
|
1022 |
} else { // new defaults: "new" as of 6.0
|
|
1023 |
young_gen_per_worker = CMSYoungGenPerWorker;
|
|
1024 |
new_ratio = (intx)7;
|
|
1025 |
min_new_default = 16*M;
|
|
1026 |
tenuring_default = (intx)4;
|
|
1027 |
}
|
|
1028 |
|
|
1029 |
// Preferred young gen size for "short" pauses
|
|
1030 |
const uintx parallel_gc_threads =
|
|
1031 |
(ParallelGCThreads == 0 ? 1 : ParallelGCThreads);
|
|
1032 |
const size_t preferred_max_new_size_unaligned =
|
|
1033 |
ScaleForWordSize(young_gen_per_worker * parallel_gc_threads);
|
|
1034 |
const size_t preferred_max_new_size =
|
|
1035 |
align_size_up(preferred_max_new_size_unaligned, os::vm_page_size());
|
|
1036 |
|
|
1037 |
// Unless explicitly requested otherwise, size young gen
|
|
1038 |
// for "short" pauses ~ 4M*ParallelGCThreads
|
|
1039 |
if (FLAG_IS_DEFAULT(MaxNewSize)) { // MaxNewSize not set at command-line
|
|
1040 |
if (!FLAG_IS_DEFAULT(NewSize)) { // NewSize explicitly set at command-line
|
|
1041 |
FLAG_SET_DEFAULT(MaxNewSize, MAX2(NewSize, preferred_max_new_size));
|
|
1042 |
} else {
|
|
1043 |
FLAG_SET_DEFAULT(MaxNewSize, preferred_max_new_size);
|
|
1044 |
}
|
|
1045 |
}
|
|
1046 |
// Unless explicitly requested otherwise, prefer a large
|
|
1047 |
// Old to Young gen size so as to shift the collection load
|
|
1048 |
// to the old generation concurrent collector
|
|
1049 |
if (FLAG_IS_DEFAULT(NewRatio)) {
|
|
1050 |
FLAG_SET_DEFAULT(NewRatio, MAX2(NewRatio, new_ratio));
|
|
1051 |
|
|
1052 |
size_t min_new = align_size_up(ScaleForWordSize(min_new_default), os::vm_page_size());
|
|
1053 |
size_t prev_initial_size = initial_heap_size();
|
|
1054 |
if (prev_initial_size != 0 && prev_initial_size < min_new+OldSize) {
|
|
1055 |
set_initial_heap_size(min_new+OldSize);
|
|
1056 |
// Currently minimum size and the initial heap sizes are the same.
|
|
1057 |
set_min_heap_size(initial_heap_size());
|
|
1058 |
if (PrintGCDetails && Verbose) {
|
|
1059 |
warning("Initial heap size increased to " SIZE_FORMAT " M from "
|
|
1060 |
SIZE_FORMAT " M; use -XX:NewSize=... for finer control.",
|
|
1061 |
initial_heap_size()/M, prev_initial_size/M);
|
|
1062 |
}
|
|
1063 |
}
|
|
1064 |
// MaxHeapSize is aligned down in collectorPolicy
|
|
1065 |
size_t max_heap = align_size_down(MaxHeapSize,
|
|
1066 |
CardTableRS::ct_max_alignment_constraint());
|
|
1067 |
|
|
1068 |
if (max_heap > min_new) {
|
|
1069 |
// Unless explicitly requested otherwise, make young gen
|
|
1070 |
// at least min_new, and at most preferred_max_new_size.
|
|
1071 |
if (FLAG_IS_DEFAULT(NewSize)) {
|
|
1072 |
FLAG_SET_DEFAULT(NewSize, MAX2(NewSize, min_new));
|
|
1073 |
FLAG_SET_DEFAULT(NewSize, MIN2(preferred_max_new_size, NewSize));
|
|
1074 |
}
|
|
1075 |
// Unless explicitly requested otherwise, size old gen
|
|
1076 |
// so that it's at least 3X of NewSize to begin with;
|
|
1077 |
// later NewRatio will decide how it grows; see above.
|
|
1078 |
if (FLAG_IS_DEFAULT(OldSize)) {
|
|
1079 |
if (max_heap > NewSize) {
|
|
1080 |
FLAG_SET_DEFAULT(OldSize, MIN2(3*NewSize, max_heap - NewSize));
|
|
1081 |
}
|
|
1082 |
}
|
|
1083 |
}
|
|
1084 |
}
|
|
1085 |
// Unless explicitly requested otherwise, definitely
|
|
1086 |
// promote all objects surviving "tenuring_default" scavenges.
|
|
1087 |
if (FLAG_IS_DEFAULT(MaxTenuringThreshold) &&
|
|
1088 |
FLAG_IS_DEFAULT(SurvivorRatio)) {
|
|
1089 |
FLAG_SET_DEFAULT(MaxTenuringThreshold, tenuring_default);
|
|
1090 |
}
|
|
1091 |
// If we decided above (or user explicitly requested)
|
|
1092 |
// `promote all' (via MaxTenuringThreshold := 0),
|
|
1093 |
// prefer minuscule survivor spaces so as not to waste
|
|
1094 |
// space for (non-existent) survivors
|
|
1095 |
if (FLAG_IS_DEFAULT(SurvivorRatio) && MaxTenuringThreshold == 0) {
|
|
1096 |
FLAG_SET_DEFAULT(SurvivorRatio, MAX2((intx)1024, SurvivorRatio));
|
|
1097 |
}
|
|
1098 |
// If OldPLABSize is set and CMSParPromoteBlocksToClaim is not,
|
|
1099 |
// set CMSParPromoteBlocksToClaim equal to OldPLABSize.
|
|
1100 |
// This is done in order to make ParNew+CMS configuration to work
|
|
1101 |
// with YoungPLABSize and OldPLABSize options.
|
|
1102 |
// See CR 6362902.
|
|
1103 |
if (!FLAG_IS_DEFAULT(OldPLABSize)) {
|
|
1104 |
if (FLAG_IS_DEFAULT(CMSParPromoteBlocksToClaim)) {
|
|
1105 |
FLAG_SET_CMDLINE(uintx, CMSParPromoteBlocksToClaim, OldPLABSize);
|
|
1106 |
}
|
|
1107 |
else {
|
|
1108 |
// OldPLABSize and CMSParPromoteBlocksToClaim are both set.
|
|
1109 |
// CMSParPromoteBlocksToClaim is a collector-specific flag, so
|
|
1110 |
// we'll let it to take precedence.
|
|
1111 |
jio_fprintf(defaultStream::error_stream(),
|
|
1112 |
"Both OldPLABSize and CMSParPromoteBlocksToClaim options are specified "
|
|
1113 |
"for the CMS collector. CMSParPromoteBlocksToClaim will take precedence.\n");
|
|
1114 |
}
|
|
1115 |
}
|
|
1116 |
}
|
|
1117 |
|
|
1118 |
bool Arguments::should_auto_select_low_pause_collector() {
|
|
1119 |
if (UseAutoGCSelectPolicy &&
|
|
1120 |
!FLAG_IS_DEFAULT(MaxGCPauseMillis) &&
|
|
1121 |
(MaxGCPauseMillis <= AutoGCSelectPauseMillis)) {
|
|
1122 |
if (PrintGCDetails) {
|
|
1123 |
// Cannot use gclog_or_tty yet.
|
|
1124 |
tty->print_cr("Automatic selection of the low pause collector"
|
|
1125 |
" based on pause goal of %d (ms)", MaxGCPauseMillis);
|
|
1126 |
}
|
|
1127 |
return true;
|
|
1128 |
}
|
|
1129 |
return false;
|
|
1130 |
}
|
|
1131 |
|
|
1132 |
void Arguments::set_ergonomics_flags() {
|
|
1133 |
// Parallel GC is not compatible with sharing. If one specifies
|
|
1134 |
// that they want sharing explicitly, do not set ergonmics flags.
|
|
1135 |
if (DumpSharedSpaces || ForceSharedSpaces) {
|
|
1136 |
return;
|
|
1137 |
}
|
|
1138 |
|
|
1139 |
if (os::is_server_class_machine() && !force_client_mode ) {
|
|
1140 |
// If no other collector is requested explicitly,
|
|
1141 |
// let the VM select the collector based on
|
|
1142 |
// machine class and automatic selection policy.
|
|
1143 |
if (!UseSerialGC &&
|
|
1144 |
!UseConcMarkSweepGC &&
|
|
1145 |
!UseParNewGC &&
|
|
1146 |
!DumpSharedSpaces &&
|
|
1147 |
FLAG_IS_DEFAULT(UseParallelGC)) {
|
|
1148 |
if (should_auto_select_low_pause_collector()) {
|
|
1149 |
FLAG_SET_ERGO(bool, UseConcMarkSweepGC, true);
|
|
1150 |
set_cms_and_parnew_gc_flags();
|
|
1151 |
} else {
|
|
1152 |
FLAG_SET_ERGO(bool, UseParallelGC, true);
|
|
1153 |
}
|
|
1154 |
no_shared_spaces();
|
|
1155 |
}
|
|
1156 |
|
|
1157 |
// This is here because the parallel collector could
|
|
1158 |
// have been selected so this initialization should
|
|
1159 |
// still be done.
|
|
1160 |
set_parallel_gc_flags();
|
|
1161 |
}
|
|
1162 |
}
|
|
1163 |
|
|
1164 |
void Arguments::set_parallel_gc_flags() {
|
|
1165 |
// If parallel old was requested, automatically enable parallel scavenge.
|
|
1166 |
if (UseParallelOldGC && !UseParallelGC && FLAG_IS_DEFAULT(UseParallelGC)) {
|
|
1167 |
FLAG_SET_DEFAULT(UseParallelGC, true);
|
|
1168 |
}
|
|
1169 |
|
|
1170 |
// If no heap maximum was requested explicitly, use some reasonable fraction
|
|
1171 |
// of the physical memory, up to a maximum of 1GB.
|
|
1172 |
if (UseParallelGC) {
|
|
1173 |
if (FLAG_IS_DEFAULT(MaxHeapSize)) {
|
|
1174 |
const uint64_t reasonable_fraction =
|
|
1175 |
os::physical_memory() / DefaultMaxRAMFraction;
|
|
1176 |
const uint64_t maximum_size = (uint64_t) DefaultMaxRAM;
|
|
1177 |
size_t reasonable_max =
|
|
1178 |
(size_t) os::allocatable_physical_memory(reasonable_fraction);
|
|
1179 |
if (reasonable_max > maximum_size) {
|
|
1180 |
reasonable_max = maximum_size;
|
|
1181 |
}
|
|
1182 |
if (PrintGCDetails && Verbose) {
|
|
1183 |
// Cannot use gclog_or_tty yet.
|
|
1184 |
tty->print_cr(" Max heap size for server class platform "
|
|
1185 |
SIZE_FORMAT, reasonable_max);
|
|
1186 |
}
|
|
1187 |
// If the initial_heap_size has not been set with -Xms,
|
|
1188 |
// then set it as fraction of size of physical memory
|
|
1189 |
// respecting the maximum and minimum sizes of the heap.
|
|
1190 |
if (initial_heap_size() == 0) {
|
|
1191 |
const uint64_t reasonable_initial_fraction =
|
|
1192 |
os::physical_memory() / DefaultInitialRAMFraction;
|
|
1193 |
const size_t reasonable_initial =
|
|
1194 |
(size_t) os::allocatable_physical_memory(reasonable_initial_fraction);
|
|
1195 |
const size_t minimum_size = NewSize + OldSize;
|
|
1196 |
set_initial_heap_size(MAX2(MIN2(reasonable_initial, reasonable_max),
|
|
1197 |
minimum_size));
|
|
1198 |
// Currently the minimum size and the initial heap sizes are the same.
|
|
1199 |
set_min_heap_size(initial_heap_size());
|
|
1200 |
if (PrintGCDetails && Verbose) {
|
|
1201 |
// Cannot use gclog_or_tty yet.
|
|
1202 |
tty->print_cr(" Initial heap size for server class platform "
|
|
1203 |
SIZE_FORMAT, initial_heap_size());
|
|
1204 |
}
|
|
1205 |
} else {
|
|
1206 |
// An minimum size was specified on the command line. Be sure
|
|
1207 |
// that the maximum size is consistent.
|
|
1208 |
if (initial_heap_size() > reasonable_max) {
|
|
1209 |
reasonable_max = initial_heap_size();
|
|
1210 |
}
|
|
1211 |
}
|
|
1212 |
FLAG_SET_ERGO(uintx, MaxHeapSize, (uintx) reasonable_max);
|
|
1213 |
}
|
|
1214 |
|
|
1215 |
// If InitialSurvivorRatio or MinSurvivorRatio were not specified, but the
|
|
1216 |
// SurvivorRatio has been set, reset their default values to SurvivorRatio +
|
|
1217 |
// 2. By doing this we make SurvivorRatio also work for Parallel Scavenger.
|
|
1218 |
// See CR 6362902 for details.
|
|
1219 |
if (!FLAG_IS_DEFAULT(SurvivorRatio)) {
|
|
1220 |
if (FLAG_IS_DEFAULT(InitialSurvivorRatio)) {
|
|
1221 |
FLAG_SET_DEFAULT(InitialSurvivorRatio, SurvivorRatio + 2);
|
|
1222 |
}
|
|
1223 |
if (FLAG_IS_DEFAULT(MinSurvivorRatio)) {
|
|
1224 |
FLAG_SET_DEFAULT(MinSurvivorRatio, SurvivorRatio + 2);
|
|
1225 |
}
|
|
1226 |
}
|
|
1227 |
|
|
1228 |
if (UseParallelOldGC) {
|
|
1229 |
// Par compact uses lower default values since they are treated as
|
|
1230 |
// minimums.
|
|
1231 |
if (FLAG_IS_DEFAULT(MarkSweepDeadRatio)) {
|
|
1232 |
MarkSweepDeadRatio = 1;
|
|
1233 |
}
|
|
1234 |
if (FLAG_IS_DEFAULT(PermMarkSweepDeadRatio)) {
|
|
1235 |
PermMarkSweepDeadRatio = 5;
|
|
1236 |
}
|
|
1237 |
}
|
|
1238 |
}
|
|
1239 |
}
|
|
1240 |
|
|
1241 |
// This must be called after ergonomics because we want bytecode rewriting
|
|
1242 |
// if the server compiler is used, or if UseSharedSpaces is disabled.
|
|
1243 |
void Arguments::set_bytecode_flags() {
|
|
1244 |
// Better not attempt to store into a read-only space.
|
|
1245 |
if (UseSharedSpaces) {
|
|
1246 |
FLAG_SET_DEFAULT(RewriteBytecodes, false);
|
|
1247 |
FLAG_SET_DEFAULT(RewriteFrequentPairs, false);
|
|
1248 |
}
|
|
1249 |
|
|
1250 |
if (!RewriteBytecodes) {
|
|
1251 |
FLAG_SET_DEFAULT(RewriteFrequentPairs, false);
|
|
1252 |
}
|
|
1253 |
}
|
|
1254 |
|
|
1255 |
// Aggressive optimization flags -XX:+AggressiveOpts
|
|
1256 |
void Arguments::set_aggressive_opts_flags() {
|
|
1257 |
if (AggressiveOpts) {
|
234
|
1258 |
// Sample flag setting code
|
|
1259 |
// if (FLAG_IS_DEFAULT(EliminateZeroing)) {
|
|
1260 |
// FLAG_SET_DEFAULT(EliminateZeroing, true);
|
|
1261 |
// }
|
1
|
1262 |
}
|
|
1263 |
}
|
|
1264 |
|
|
1265 |
//===========================================================================================================
|
|
1266 |
// Parsing of java.compiler property
|
|
1267 |
|
|
1268 |
void Arguments::process_java_compiler_argument(char* arg) {
|
|
1269 |
// For backwards compatibility, Djava.compiler=NONE or ""
|
|
1270 |
// causes us to switch to -Xint mode UNLESS -Xdebug
|
|
1271 |
// is also specified.
|
|
1272 |
if (strlen(arg) == 0 || strcasecmp(arg, "NONE") == 0) {
|
|
1273 |
set_java_compiler(true); // "-Djava.compiler[=...]" most recently seen.
|
|
1274 |
}
|
|
1275 |
}
|
|
1276 |
|
|
1277 |
void Arguments::process_java_launcher_argument(const char* launcher, void* extra_info) {
|
|
1278 |
_sun_java_launcher = strdup(launcher);
|
|
1279 |
}
|
|
1280 |
|
|
1281 |
bool Arguments::created_by_java_launcher() {
|
|
1282 |
assert(_sun_java_launcher != NULL, "property must have value");
|
|
1283 |
return strcmp(DEFAULT_JAVA_LAUNCHER, _sun_java_launcher) != 0;
|
|
1284 |
}
|
|
1285 |
|
|
1286 |
//===========================================================================================================
|
|
1287 |
// Parsing of main arguments
|
|
1288 |
|
|
1289 |
bool Arguments::verify_percentage(uintx value, const char* name) {
|
|
1290 |
if (value <= 100) {
|
|
1291 |
return true;
|
|
1292 |
}
|
|
1293 |
jio_fprintf(defaultStream::error_stream(),
|
|
1294 |
"%s of " UINTX_FORMAT " is invalid; must be between 0 and 100\n",
|
|
1295 |
name, value);
|
|
1296 |
return false;
|
|
1297 |
}
|
|
1298 |
|
|
1299 |
static void set_serial_gc_flags() {
|
|
1300 |
FLAG_SET_DEFAULT(UseSerialGC, true);
|
|
1301 |
FLAG_SET_DEFAULT(UseParNewGC, false);
|
|
1302 |
FLAG_SET_DEFAULT(UseConcMarkSweepGC, false);
|
|
1303 |
FLAG_SET_DEFAULT(UseParallelGC, false);
|
|
1304 |
FLAG_SET_DEFAULT(UseParallelOldGC, false);
|
|
1305 |
}
|
|
1306 |
|
|
1307 |
static bool verify_serial_gc_flags() {
|
|
1308 |
return (UseSerialGC &&
|
|
1309 |
!(UseParNewGC || UseConcMarkSweepGC || UseParallelGC ||
|
|
1310 |
UseParallelOldGC));
|
|
1311 |
}
|
|
1312 |
|
|
1313 |
// Check the consistency of vm_init_args
|
|
1314 |
bool Arguments::check_vm_args_consistency() {
|
|
1315 |
// Method for adding checks for flag consistency.
|
|
1316 |
// The intent is to warn the user of all possible conflicts,
|
|
1317 |
// before returning an error.
|
|
1318 |
// Note: Needs platform-dependent factoring.
|
|
1319 |
bool status = true;
|
|
1320 |
|
|
1321 |
#if ( (defined(COMPILER2) && defined(SPARC)))
|
|
1322 |
// NOTE: The call to VM_Version_init depends on the fact that VM_Version_init
|
|
1323 |
// on sparc doesn't require generation of a stub as is the case on, e.g.,
|
|
1324 |
// x86. Normally, VM_Version_init must be called from init_globals in
|
|
1325 |
// init.cpp, which is called by the initial java thread *after* arguments
|
|
1326 |
// have been parsed. VM_Version_init gets called twice on sparc.
|
|
1327 |
extern void VM_Version_init();
|
|
1328 |
VM_Version_init();
|
|
1329 |
if (!VM_Version::has_v9()) {
|
|
1330 |
jio_fprintf(defaultStream::error_stream(),
|
|
1331 |
"V8 Machine detected, Server requires V9\n");
|
|
1332 |
status = false;
|
|
1333 |
}
|
|
1334 |
#endif /* COMPILER2 && SPARC */
|
|
1335 |
|
|
1336 |
// Allow both -XX:-UseStackBanging and -XX:-UseBoundThreads in non-product
|
|
1337 |
// builds so the cost of stack banging can be measured.
|
|
1338 |
#if (defined(PRODUCT) && defined(SOLARIS))
|
|
1339 |
if (!UseBoundThreads && !UseStackBanging) {
|
|
1340 |
jio_fprintf(defaultStream::error_stream(),
|
|
1341 |
"-UseStackBanging conflicts with -UseBoundThreads\n");
|
|
1342 |
|
|
1343 |
status = false;
|
|
1344 |
}
|
|
1345 |
#endif
|
|
1346 |
|
|
1347 |
if (TLABRefillWasteFraction == 0) {
|
|
1348 |
jio_fprintf(defaultStream::error_stream(),
|
|
1349 |
"TLABRefillWasteFraction should be a denominator, "
|
|
1350 |
"not " SIZE_FORMAT "\n",
|
|
1351 |
TLABRefillWasteFraction);
|
|
1352 |
status = false;
|
|
1353 |
}
|
|
1354 |
|
|
1355 |
status &= verify_percentage(MaxLiveObjectEvacuationRatio,
|
|
1356 |
"MaxLiveObjectEvacuationRatio");
|
|
1357 |
status &= verify_percentage(AdaptiveSizePolicyWeight,
|
|
1358 |
"AdaptiveSizePolicyWeight");
|
|
1359 |
status &= verify_percentage(AdaptivePermSizeWeight, "AdaptivePermSizeWeight");
|
|
1360 |
status &= verify_percentage(ThresholdTolerance, "ThresholdTolerance");
|
|
1361 |
status &= verify_percentage(MinHeapFreeRatio, "MinHeapFreeRatio");
|
|
1362 |
status &= verify_percentage(MaxHeapFreeRatio, "MaxHeapFreeRatio");
|
|
1363 |
|
|
1364 |
if (MinHeapFreeRatio > MaxHeapFreeRatio) {
|
|
1365 |
jio_fprintf(defaultStream::error_stream(),
|
|
1366 |
"MinHeapFreeRatio (" UINTX_FORMAT ") must be less than or "
|
|
1367 |
"equal to MaxHeapFreeRatio (" UINTX_FORMAT ")\n",
|
|
1368 |
MinHeapFreeRatio, MaxHeapFreeRatio);
|
|
1369 |
status = false;
|
|
1370 |
}
|
|
1371 |
// Keeping the heap 100% free is hard ;-) so limit it to 99%.
|
|
1372 |
MinHeapFreeRatio = MIN2(MinHeapFreeRatio, (uintx) 99);
|
|
1373 |
|
|
1374 |
if (FullGCALot && FLAG_IS_DEFAULT(MarkSweepAlwaysCompactCount)) {
|
|
1375 |
MarkSweepAlwaysCompactCount = 1; // Move objects every gc.
|
|
1376 |
}
|
|
1377 |
|
|
1378 |
status &= verify_percentage(GCHeapFreeLimit, "GCHeapFreeLimit");
|
|
1379 |
status &= verify_percentage(GCTimeLimit, "GCTimeLimit");
|
|
1380 |
if (GCTimeLimit == 100) {
|
|
1381 |
// Turn off gc-overhead-limit-exceeded checks
|
|
1382 |
FLAG_SET_DEFAULT(UseGCOverheadLimit, false);
|
|
1383 |
}
|
|
1384 |
|
|
1385 |
status &= verify_percentage(GCHeapFreeLimit, "GCHeapFreeLimit");
|
|
1386 |
|
|
1387 |
// Check user specified sharing option conflict with Parallel GC
|
|
1388 |
bool cannot_share = (UseConcMarkSweepGC || UseParallelGC ||
|
|
1389 |
UseParallelOldGC || UseParNewGC ||
|
|
1390 |
SOLARIS_ONLY(UseISM) NOT_SOLARIS(UseLargePages));
|
|
1391 |
|
|
1392 |
if (cannot_share) {
|
|
1393 |
// Either force sharing on by forcing the other options off, or
|
|
1394 |
// force sharing off.
|
|
1395 |
if (DumpSharedSpaces || ForceSharedSpaces) {
|
|
1396 |
set_serial_gc_flags();
|
|
1397 |
FLAG_SET_DEFAULT(SOLARIS_ONLY(UseISM) NOT_SOLARIS(UseLargePages), false);
|
|
1398 |
} else {
|
|
1399 |
no_shared_spaces();
|
|
1400 |
}
|
|
1401 |
}
|
|
1402 |
|
|
1403 |
// Ensure that the user has not selected conflicting sets
|
|
1404 |
// of collectors. [Note: this check is merely a user convenience;
|
|
1405 |
// collectors over-ride each other so that only a non-conflicting
|
|
1406 |
// set is selected; however what the user gets is not what they
|
|
1407 |
// may have expected from the combination they asked for. It's
|
|
1408 |
// better to reduce user confusion by not allowing them to
|
|
1409 |
// select conflicting combinations.
|
|
1410 |
uint i = 0;
|
|
1411 |
if (UseSerialGC) i++;
|
|
1412 |
if (UseConcMarkSweepGC || UseParNewGC) i++;
|
|
1413 |
if (UseParallelGC || UseParallelOldGC) i++;
|
|
1414 |
if (i > 1) {
|
|
1415 |
jio_fprintf(defaultStream::error_stream(),
|
|
1416 |
"Conflicting collector combinations in option list; "
|
|
1417 |
"please refer to the release notes for the combinations "
|
|
1418 |
"allowed\n");
|
|
1419 |
status = false;
|
|
1420 |
}
|
|
1421 |
|
|
1422 |
if (_has_alloc_profile) {
|
|
1423 |
if (UseParallelGC || UseParallelOldGC) {
|
|
1424 |
jio_fprintf(defaultStream::error_stream(),
|
|
1425 |
"error: invalid argument combination.\n"
|
|
1426 |
"Allocation profiling (-Xaprof) cannot be used together with "
|
|
1427 |
"Parallel GC (-XX:+UseParallelGC or -XX:+UseParallelOldGC).\n");
|
|
1428 |
status = false;
|
|
1429 |
}
|
|
1430 |
if (UseConcMarkSweepGC) {
|
|
1431 |
jio_fprintf(defaultStream::error_stream(),
|
|
1432 |
"error: invalid argument combination.\n"
|
|
1433 |
"Allocation profiling (-Xaprof) cannot be used together with "
|
|
1434 |
"the CMS collector (-XX:+UseConcMarkSweepGC).\n");
|
|
1435 |
status = false;
|
|
1436 |
}
|
|
1437 |
}
|
|
1438 |
|
|
1439 |
if (CMSIncrementalMode) {
|
|
1440 |
if (!UseConcMarkSweepGC) {
|
|
1441 |
jio_fprintf(defaultStream::error_stream(),
|
|
1442 |
"error: invalid argument combination.\n"
|
|
1443 |
"The CMS collector (-XX:+UseConcMarkSweepGC) must be "
|
|
1444 |
"selected in order\nto use CMSIncrementalMode.\n");
|
|
1445 |
status = false;
|
|
1446 |
} else if (!UseTLAB) {
|
|
1447 |
jio_fprintf(defaultStream::error_stream(),
|
|
1448 |
"error: CMSIncrementalMode requires thread-local "
|
|
1449 |
"allocation buffers\n(-XX:+UseTLAB).\n");
|
|
1450 |
status = false;
|
|
1451 |
} else {
|
|
1452 |
status &= verify_percentage(CMSIncrementalDutyCycle,
|
|
1453 |
"CMSIncrementalDutyCycle");
|
|
1454 |
status &= verify_percentage(CMSIncrementalDutyCycleMin,
|
|
1455 |
"CMSIncrementalDutyCycleMin");
|
|
1456 |
status &= verify_percentage(CMSIncrementalSafetyFactor,
|
|
1457 |
"CMSIncrementalSafetyFactor");
|
|
1458 |
status &= verify_percentage(CMSIncrementalOffset,
|
|
1459 |
"CMSIncrementalOffset");
|
|
1460 |
status &= verify_percentage(CMSExpAvgFactor,
|
|
1461 |
"CMSExpAvgFactor");
|
|
1462 |
// If it was not set on the command line, set
|
|
1463 |
// CMSInitiatingOccupancyFraction to 1 so icms can initiate cycles early.
|
|
1464 |
if (CMSInitiatingOccupancyFraction < 0) {
|
|
1465 |
FLAG_SET_DEFAULT(CMSInitiatingOccupancyFraction, 1);
|
|
1466 |
}
|
|
1467 |
}
|
|
1468 |
}
|
|
1469 |
|
|
1470 |
if (UseNUMA && !UseTLAB) {
|
|
1471 |
jio_fprintf(defaultStream::error_stream(),
|
|
1472 |
"error: NUMA allocator (-XX:+UseNUMA) requires thread-local "
|
|
1473 |
"allocation\nbuffers (-XX:+UseTLAB).\n");
|
|
1474 |
status = false;
|
|
1475 |
}
|
|
1476 |
|
|
1477 |
// CMS space iteration, which FLSVerifyAllHeapreferences entails,
|
|
1478 |
// insists that we hold the requisite locks so that the iteration is
|
|
1479 |
// MT-safe. For the verification at start-up and shut-down, we don't
|
|
1480 |
// yet have a good way of acquiring and releasing these locks,
|
|
1481 |
// which are not visible at the CollectedHeap level. We want to
|
|
1482 |
// be able to acquire these locks and then do the iteration rather
|
|
1483 |
// than just disable the lock verification. This will be fixed under
|
|
1484 |
// bug 4788986.
|
|
1485 |
if (UseConcMarkSweepGC && FLSVerifyAllHeapReferences) {
|
|
1486 |
if (VerifyGCStartAt == 0) {
|
|
1487 |
warning("Heap verification at start-up disabled "
|
|
1488 |
"(due to current incompatibility with FLSVerifyAllHeapReferences)");
|
|
1489 |
VerifyGCStartAt = 1; // Disable verification at start-up
|
|
1490 |
}
|
|
1491 |
if (VerifyBeforeExit) {
|
|
1492 |
warning("Heap verification at shutdown disabled "
|
|
1493 |
"(due to current incompatibility with FLSVerifyAllHeapReferences)");
|
|
1494 |
VerifyBeforeExit = false; // Disable verification at shutdown
|
|
1495 |
}
|
|
1496 |
}
|
|
1497 |
|
|
1498 |
// Note: only executed in non-PRODUCT mode
|
|
1499 |
if (!UseAsyncConcMarkSweepGC &&
|
|
1500 |
(ExplicitGCInvokesConcurrent ||
|
|
1501 |
ExplicitGCInvokesConcurrentAndUnloadsClasses)) {
|
|
1502 |
jio_fprintf(defaultStream::error_stream(),
|
|
1503 |
"error: +ExplictGCInvokesConcurrent[AndUnloadsClasses] conflicts"
|
|
1504 |
" with -UseAsyncConcMarkSweepGC");
|
|
1505 |
status = false;
|
|
1506 |
}
|
|
1507 |
|
|
1508 |
return status;
|
|
1509 |
}
|
|
1510 |
|
|
1511 |
bool Arguments::is_bad_option(const JavaVMOption* option, jboolean ignore,
|
|
1512 |
const char* option_type) {
|
|
1513 |
if (ignore) return false;
|
|
1514 |
|
|
1515 |
const char* spacer = " ";
|
|
1516 |
if (option_type == NULL) {
|
|
1517 |
option_type = ++spacer; // Set both to the empty string.
|
|
1518 |
}
|
|
1519 |
|
|
1520 |
if (os::obsolete_option(option)) {
|
|
1521 |
jio_fprintf(defaultStream::error_stream(),
|
|
1522 |
"Obsolete %s%soption: %s\n", option_type, spacer,
|
|
1523 |
option->optionString);
|
|
1524 |
return false;
|
|
1525 |
} else {
|
|
1526 |
jio_fprintf(defaultStream::error_stream(),
|
|
1527 |
"Unrecognized %s%soption: %s\n", option_type, spacer,
|
|
1528 |
option->optionString);
|
|
1529 |
return true;
|
|
1530 |
}
|
|
1531 |
}
|
|
1532 |
|
|
1533 |
static const char* user_assertion_options[] = {
|
|
1534 |
"-da", "-ea", "-disableassertions", "-enableassertions", 0
|
|
1535 |
};
|
|
1536 |
|
|
1537 |
static const char* system_assertion_options[] = {
|
|
1538 |
"-dsa", "-esa", "-disablesystemassertions", "-enablesystemassertions", 0
|
|
1539 |
};
|
|
1540 |
|
|
1541 |
// Return true if any of the strings in null-terminated array 'names' matches.
|
|
1542 |
// If tail_allowed is true, then the tail must begin with a colon; otherwise,
|
|
1543 |
// the option must match exactly.
|
|
1544 |
static bool match_option(const JavaVMOption* option, const char** names, const char** tail,
|
|
1545 |
bool tail_allowed) {
|
|
1546 |
for (/* empty */; *names != NULL; ++names) {
|
|
1547 |
if (match_option(option, *names, tail)) {
|
|
1548 |
if (**tail == '\0' || tail_allowed && **tail == ':') {
|
|
1549 |
return true;
|
|
1550 |
}
|
|
1551 |
}
|
|
1552 |
}
|
|
1553 |
return false;
|
|
1554 |
}
|
|
1555 |
|
|
1556 |
Arguments::ArgsRange Arguments::parse_memory_size(const char* s,
|
|
1557 |
jlong* long_arg,
|
|
1558 |
jlong min_size) {
|
|
1559 |
if (!atomll(s, long_arg)) return arg_unreadable;
|
|
1560 |
return check_memory_size(*long_arg, min_size);
|
|
1561 |
}
|
|
1562 |
|
|
1563 |
// Parse JavaVMInitArgs structure
|
|
1564 |
|
|
1565 |
jint Arguments::parse_vm_init_args(const JavaVMInitArgs* args) {
|
|
1566 |
// For components of the system classpath.
|
|
1567 |
SysClassPath scp(Arguments::get_sysclasspath());
|
|
1568 |
bool scp_assembly_required = false;
|
|
1569 |
|
|
1570 |
// Save default settings for some mode flags
|
|
1571 |
Arguments::_AlwaysCompileLoopMethods = AlwaysCompileLoopMethods;
|
|
1572 |
Arguments::_UseOnStackReplacement = UseOnStackReplacement;
|
|
1573 |
Arguments::_ClipInlining = ClipInlining;
|
|
1574 |
Arguments::_BackgroundCompilation = BackgroundCompilation;
|
|
1575 |
Arguments::_Tier2CompileThreshold = Tier2CompileThreshold;
|
|
1576 |
|
|
1577 |
// Parse JAVA_TOOL_OPTIONS environment variable (if present)
|
|
1578 |
jint result = parse_java_tool_options_environment_variable(&scp, &scp_assembly_required);
|
|
1579 |
if (result != JNI_OK) {
|
|
1580 |
return result;
|
|
1581 |
}
|
|
1582 |
|
|
1583 |
// Parse JavaVMInitArgs structure passed in
|
|
1584 |
result = parse_each_vm_init_arg(args, &scp, &scp_assembly_required, COMMAND_LINE);
|
|
1585 |
if (result != JNI_OK) {
|
|
1586 |
return result;
|
|
1587 |
}
|
|
1588 |
|
|
1589 |
// Parse _JAVA_OPTIONS environment variable (if present) (mimics classic VM)
|
|
1590 |
result = parse_java_options_environment_variable(&scp, &scp_assembly_required);
|
|
1591 |
if (result != JNI_OK) {
|
|
1592 |
return result;
|
|
1593 |
}
|
|
1594 |
|
|
1595 |
// Do final processing now that all arguments have been parsed
|
|
1596 |
result = finalize_vm_init_args(&scp, scp_assembly_required);
|
|
1597 |
if (result != JNI_OK) {
|
|
1598 |
return result;
|
|
1599 |
}
|
|
1600 |
|
|
1601 |
return JNI_OK;
|
|
1602 |
}
|
|
1603 |
|
|
1604 |
|
|
1605 |
jint Arguments::parse_each_vm_init_arg(const JavaVMInitArgs* args,
|
|
1606 |
SysClassPath* scp_p,
|
|
1607 |
bool* scp_assembly_required_p,
|
|
1608 |
FlagValueOrigin origin) {
|
|
1609 |
// Remaining part of option string
|
|
1610 |
const char* tail;
|
|
1611 |
|
|
1612 |
// iterate over arguments
|
|
1613 |
for (int index = 0; index < args->nOptions; index++) {
|
|
1614 |
bool is_absolute_path = false; // for -agentpath vs -agentlib
|
|
1615 |
|
|
1616 |
const JavaVMOption* option = args->options + index;
|
|
1617 |
|
|
1618 |
if (!match_option(option, "-Djava.class.path", &tail) &&
|
|
1619 |
!match_option(option, "-Dsun.java.command", &tail) &&
|
|
1620 |
!match_option(option, "-Dsun.java.launcher", &tail)) {
|
|
1621 |
|
|
1622 |
// add all jvm options to the jvm_args string. This string
|
|
1623 |
// is used later to set the java.vm.args PerfData string constant.
|
|
1624 |
// the -Djava.class.path and the -Dsun.java.command options are
|
|
1625 |
// omitted from jvm_args string as each have their own PerfData
|
|
1626 |
// string constant object.
|
|
1627 |
build_jvm_args(option->optionString);
|
|
1628 |
}
|
|
1629 |
|
|
1630 |
// -verbose:[class/gc/jni]
|
|
1631 |
if (match_option(option, "-verbose", &tail)) {
|
|
1632 |
if (!strcmp(tail, ":class") || !strcmp(tail, "")) {
|
|
1633 |
FLAG_SET_CMDLINE(bool, TraceClassLoading, true);
|
|
1634 |
FLAG_SET_CMDLINE(bool, TraceClassUnloading, true);
|
|
1635 |
} else if (!strcmp(tail, ":gc")) {
|
|
1636 |
FLAG_SET_CMDLINE(bool, PrintGC, true);
|
|
1637 |
FLAG_SET_CMDLINE(bool, TraceClassUnloading, true);
|
|
1638 |
} else if (!strcmp(tail, ":jni")) {
|
|
1639 |
FLAG_SET_CMDLINE(bool, PrintJNIResolving, true);
|
|
1640 |
}
|
|
1641 |
// -da / -ea / -disableassertions / -enableassertions
|
|
1642 |
// These accept an optional class/package name separated by a colon, e.g.,
|
|
1643 |
// -da:java.lang.Thread.
|
|
1644 |
} else if (match_option(option, user_assertion_options, &tail, true)) {
|
|
1645 |
bool enable = option->optionString[1] == 'e'; // char after '-' is 'e'
|
|
1646 |
if (*tail == '\0') {
|
|
1647 |
JavaAssertions::setUserClassDefault(enable);
|
|
1648 |
} else {
|
|
1649 |
assert(*tail == ':', "bogus match by match_option()");
|
|
1650 |
JavaAssertions::addOption(tail + 1, enable);
|
|
1651 |
}
|
|
1652 |
// -dsa / -esa / -disablesystemassertions / -enablesystemassertions
|
|
1653 |
} else if (match_option(option, system_assertion_options, &tail, false)) {
|
|
1654 |
bool enable = option->optionString[1] == 'e'; // char after '-' is 'e'
|
|
1655 |
JavaAssertions::setSystemClassDefault(enable);
|
|
1656 |
// -bootclasspath:
|
|
1657 |
} else if (match_option(option, "-Xbootclasspath:", &tail)) {
|
|
1658 |
scp_p->reset_path(tail);
|
|
1659 |
*scp_assembly_required_p = true;
|
|
1660 |
// -bootclasspath/a:
|
|
1661 |
} else if (match_option(option, "-Xbootclasspath/a:", &tail)) {
|
|
1662 |
scp_p->add_suffix(tail);
|
|
1663 |
*scp_assembly_required_p = true;
|
|
1664 |
// -bootclasspath/p:
|
|
1665 |
} else if (match_option(option, "-Xbootclasspath/p:", &tail)) {
|
|
1666 |
scp_p->add_prefix(tail);
|
|
1667 |
*scp_assembly_required_p = true;
|
|
1668 |
// -Xrun
|
|
1669 |
} else if (match_option(option, "-Xrun", &tail)) {
|
|
1670 |
if(tail != NULL) {
|
|
1671 |
const char* pos = strchr(tail, ':');
|
|
1672 |
size_t len = (pos == NULL) ? strlen(tail) : pos - tail;
|
|
1673 |
char* name = (char*)memcpy(NEW_C_HEAP_ARRAY(char, len + 1), tail, len);
|
|
1674 |
name[len] = '\0';
|
|
1675 |
|
|
1676 |
char *options = NULL;
|
|
1677 |
if(pos != NULL) {
|
|
1678 |
size_t len2 = strlen(pos+1) + 1; // options start after ':'. Final zero must be copied.
|
|
1679 |
options = (char*)memcpy(NEW_C_HEAP_ARRAY(char, len2), pos+1, len2);
|
|
1680 |
}
|
|
1681 |
#ifdef JVMTI_KERNEL
|
|
1682 |
if ((strcmp(name, "hprof") == 0) || (strcmp(name, "jdwp") == 0)) {
|
|
1683 |
warning("profiling and debugging agents are not supported with Kernel VM");
|
|
1684 |
} else
|
|
1685 |
#endif // JVMTI_KERNEL
|
|
1686 |
add_init_library(name, options);
|
|
1687 |
}
|
|
1688 |
// -agentlib and -agentpath
|
|
1689 |
} else if (match_option(option, "-agentlib:", &tail) ||
|
|
1690 |
(is_absolute_path = match_option(option, "-agentpath:", &tail))) {
|
|
1691 |
if(tail != NULL) {
|
|
1692 |
const char* pos = strchr(tail, '=');
|
|
1693 |
size_t len = (pos == NULL) ? strlen(tail) : pos - tail;
|
|
1694 |
char* name = strncpy(NEW_C_HEAP_ARRAY(char, len + 1), tail, len);
|
|
1695 |
name[len] = '\0';
|
|
1696 |
|
|
1697 |
char *options = NULL;
|
|
1698 |
if(pos != NULL) {
|
|
1699 |
options = strcpy(NEW_C_HEAP_ARRAY(char, strlen(pos + 1) + 1), pos + 1);
|
|
1700 |
}
|
|
1701 |
#ifdef JVMTI_KERNEL
|
|
1702 |
if ((strcmp(name, "hprof") == 0) || (strcmp(name, "jdwp") == 0)) {
|
|
1703 |
warning("profiling and debugging agents are not supported with Kernel VM");
|
|
1704 |
} else
|
|
1705 |
#endif // JVMTI_KERNEL
|
|
1706 |
add_init_agent(name, options, is_absolute_path);
|
|
1707 |
|
|
1708 |
}
|
|
1709 |
// -javaagent
|
|
1710 |
} else if (match_option(option, "-javaagent:", &tail)) {
|
|
1711 |
if(tail != NULL) {
|
|
1712 |
char *options = strcpy(NEW_C_HEAP_ARRAY(char, strlen(tail) + 1), tail);
|
|
1713 |
add_init_agent("instrument", options, false);
|
|
1714 |
}
|
|
1715 |
// -Xnoclassgc
|
|
1716 |
} else if (match_option(option, "-Xnoclassgc", &tail)) {
|
|
1717 |
FLAG_SET_CMDLINE(bool, ClassUnloading, false);
|
|
1718 |
// -Xincgc: i-CMS
|
|
1719 |
} else if (match_option(option, "-Xincgc", &tail)) {
|
|
1720 |
FLAG_SET_CMDLINE(bool, UseConcMarkSweepGC, true);
|
|
1721 |
FLAG_SET_CMDLINE(bool, CMSIncrementalMode, true);
|
|
1722 |
// -Xnoincgc: no i-CMS
|
|
1723 |
} else if (match_option(option, "-Xnoincgc", &tail)) {
|
|
1724 |
FLAG_SET_CMDLINE(bool, UseConcMarkSweepGC, false);
|
|
1725 |
FLAG_SET_CMDLINE(bool, CMSIncrementalMode, false);
|
|
1726 |
// -Xconcgc
|
|
1727 |
} else if (match_option(option, "-Xconcgc", &tail)) {
|
|
1728 |
FLAG_SET_CMDLINE(bool, UseConcMarkSweepGC, true);
|
|
1729 |
// -Xnoconcgc
|
|
1730 |
} else if (match_option(option, "-Xnoconcgc", &tail)) {
|
|
1731 |
FLAG_SET_CMDLINE(bool, UseConcMarkSweepGC, false);
|
|
1732 |
// -Xbatch
|
|
1733 |
} else if (match_option(option, "-Xbatch", &tail)) {
|
|
1734 |
FLAG_SET_CMDLINE(bool, BackgroundCompilation, false);
|
|
1735 |
// -Xmn for compatibility with other JVM vendors
|
|
1736 |
} else if (match_option(option, "-Xmn", &tail)) {
|
|
1737 |
jlong long_initial_eden_size = 0;
|
|
1738 |
ArgsRange errcode = parse_memory_size(tail, &long_initial_eden_size, 1);
|
|
1739 |
if (errcode != arg_in_range) {
|
|
1740 |
jio_fprintf(defaultStream::error_stream(),
|
|
1741 |
"Invalid initial eden size: %s\n", option->optionString);
|
|
1742 |
describe_range_error(errcode);
|
|
1743 |
return JNI_EINVAL;
|
|
1744 |
}
|
|
1745 |
FLAG_SET_CMDLINE(uintx, MaxNewSize, (size_t) long_initial_eden_size);
|
|
1746 |
FLAG_SET_CMDLINE(uintx, NewSize, (size_t) long_initial_eden_size);
|
|
1747 |
// -Xms
|
|
1748 |
} else if (match_option(option, "-Xms", &tail)) {
|
|
1749 |
jlong long_initial_heap_size = 0;
|
|
1750 |
ArgsRange errcode = parse_memory_size(tail, &long_initial_heap_size, 1);
|
|
1751 |
if (errcode != arg_in_range) {
|
|
1752 |
jio_fprintf(defaultStream::error_stream(),
|
|
1753 |
"Invalid initial heap size: %s\n", option->optionString);
|
|
1754 |
describe_range_error(errcode);
|
|
1755 |
return JNI_EINVAL;
|
|
1756 |
}
|
|
1757 |
set_initial_heap_size((size_t) long_initial_heap_size);
|
|
1758 |
// Currently the minimum size and the initial heap sizes are the same.
|
|
1759 |
set_min_heap_size(initial_heap_size());
|
|
1760 |
// -Xmx
|
|
1761 |
} else if (match_option(option, "-Xmx", &tail)) {
|
|
1762 |
jlong long_max_heap_size = 0;
|
|
1763 |
ArgsRange errcode = parse_memory_size(tail, &long_max_heap_size, 1);
|
|
1764 |
if (errcode != arg_in_range) {
|
|
1765 |
jio_fprintf(defaultStream::error_stream(),
|
|
1766 |
"Invalid maximum heap size: %s\n", option->optionString);
|
|
1767 |
describe_range_error(errcode);
|
|
1768 |
return JNI_EINVAL;
|
|
1769 |
}
|
|
1770 |
FLAG_SET_CMDLINE(uintx, MaxHeapSize, (size_t) long_max_heap_size);
|
|
1771 |
// Xmaxf
|
|
1772 |
} else if (match_option(option, "-Xmaxf", &tail)) {
|
|
1773 |
int maxf = (int)(atof(tail) * 100);
|
|
1774 |
if (maxf < 0 || maxf > 100) {
|
|
1775 |
jio_fprintf(defaultStream::error_stream(),
|
|
1776 |
"Bad max heap free percentage size: %s\n",
|
|
1777 |
option->optionString);
|
|
1778 |
return JNI_EINVAL;
|
|
1779 |
} else {
|
|
1780 |
FLAG_SET_CMDLINE(uintx, MaxHeapFreeRatio, maxf);
|
|
1781 |
}
|
|
1782 |
// Xminf
|
|
1783 |
} else if (match_option(option, "-Xminf", &tail)) {
|
|
1784 |
int minf = (int)(atof(tail) * 100);
|
|
1785 |
if (minf < 0 || minf > 100) {
|
|
1786 |
jio_fprintf(defaultStream::error_stream(),
|
|
1787 |
"Bad min heap free percentage size: %s\n",
|
|
1788 |
option->optionString);
|
|
1789 |
return JNI_EINVAL;
|
|
1790 |
} else {
|
|
1791 |
FLAG_SET_CMDLINE(uintx, MinHeapFreeRatio, minf);
|
|
1792 |
}
|
|
1793 |
// -Xss
|
|
1794 |
} else if (match_option(option, "-Xss", &tail)) {
|
|
1795 |
jlong long_ThreadStackSize = 0;
|
|
1796 |
ArgsRange errcode = parse_memory_size(tail, &long_ThreadStackSize, 1000);
|
|
1797 |
if (errcode != arg_in_range) {
|
|
1798 |
jio_fprintf(defaultStream::error_stream(),
|
|
1799 |
"Invalid thread stack size: %s\n", option->optionString);
|
|
1800 |
describe_range_error(errcode);
|
|
1801 |
return JNI_EINVAL;
|
|
1802 |
}
|
|
1803 |
// Internally track ThreadStackSize in units of 1024 bytes.
|
|
1804 |
FLAG_SET_CMDLINE(intx, ThreadStackSize,
|
|
1805 |
round_to((int)long_ThreadStackSize, K) / K);
|
|
1806 |
// -Xoss
|
|
1807 |
} else if (match_option(option, "-Xoss", &tail)) {
|
|
1808 |
// HotSpot does not have separate native and Java stacks, ignore silently for compatibility
|
|
1809 |
// -Xmaxjitcodesize
|
|
1810 |
} else if (match_option(option, "-Xmaxjitcodesize", &tail)) {
|
|
1811 |
jlong long_ReservedCodeCacheSize = 0;
|
|
1812 |
ArgsRange errcode = parse_memory_size(tail, &long_ReservedCodeCacheSize,
|
|
1813 |
InitialCodeCacheSize);
|
|
1814 |
if (errcode != arg_in_range) {
|
|
1815 |
jio_fprintf(defaultStream::error_stream(),
|
|
1816 |
"Invalid maximum code cache size: %s\n",
|
|
1817 |
option->optionString);
|
|
1818 |
describe_range_error(errcode);
|
|
1819 |
return JNI_EINVAL;
|
|
1820 |
}
|
|
1821 |
FLAG_SET_CMDLINE(uintx, ReservedCodeCacheSize, (uintx)long_ReservedCodeCacheSize);
|
|
1822 |
// -green
|
|
1823 |
} else if (match_option(option, "-green", &tail)) {
|
|
1824 |
jio_fprintf(defaultStream::error_stream(),
|
|
1825 |
"Green threads support not available\n");
|
|
1826 |
return JNI_EINVAL;
|
|
1827 |
// -native
|
|
1828 |
} else if (match_option(option, "-native", &tail)) {
|
|
1829 |
// HotSpot always uses native threads, ignore silently for compatibility
|
|
1830 |
// -Xsqnopause
|
|
1831 |
} else if (match_option(option, "-Xsqnopause", &tail)) {
|
|
1832 |
// EVM option, ignore silently for compatibility
|
|
1833 |
// -Xrs
|
|
1834 |
} else if (match_option(option, "-Xrs", &tail)) {
|
|
1835 |
// Classic/EVM option, new functionality
|
|
1836 |
FLAG_SET_CMDLINE(bool, ReduceSignalUsage, true);
|
|
1837 |
} else if (match_option(option, "-Xusealtsigs", &tail)) {
|
|
1838 |
// change default internal VM signals used - lower case for back compat
|
|
1839 |
FLAG_SET_CMDLINE(bool, UseAltSigs, true);
|
|
1840 |
// -Xoptimize
|
|
1841 |
} else if (match_option(option, "-Xoptimize", &tail)) {
|
|
1842 |
// EVM option, ignore silently for compatibility
|
|
1843 |
// -Xprof
|
|
1844 |
} else if (match_option(option, "-Xprof", &tail)) {
|
|
1845 |
#ifndef FPROF_KERNEL
|
|
1846 |
_has_profile = true;
|
|
1847 |
#else // FPROF_KERNEL
|
|
1848 |
// do we have to exit?
|
|
1849 |
warning("Kernel VM does not support flat profiling.");
|
|
1850 |
#endif // FPROF_KERNEL
|
|
1851 |
// -Xaprof
|
|
1852 |
} else if (match_option(option, "-Xaprof", &tail)) {
|
|
1853 |
_has_alloc_profile = true;
|
|
1854 |
// -Xconcurrentio
|
|
1855 |
} else if (match_option(option, "-Xconcurrentio", &tail)) {
|
|
1856 |
FLAG_SET_CMDLINE(bool, UseLWPSynchronization, true);
|
|
1857 |
FLAG_SET_CMDLINE(bool, BackgroundCompilation, false);
|
|
1858 |
FLAG_SET_CMDLINE(intx, DeferThrSuspendLoopCount, 1);
|
|
1859 |
FLAG_SET_CMDLINE(bool, UseTLAB, false);
|
|
1860 |
FLAG_SET_CMDLINE(uintx, NewSizeThreadIncrease, 16 * K); // 20Kb per thread added to new generation
|
|
1861 |
|
|
1862 |
// -Xinternalversion
|
|
1863 |
} else if (match_option(option, "-Xinternalversion", &tail)) {
|
|
1864 |
jio_fprintf(defaultStream::output_stream(), "%s\n",
|
|
1865 |
VM_Version::internal_vm_info_string());
|
|
1866 |
vm_exit(0);
|
|
1867 |
#ifndef PRODUCT
|
|
1868 |
// -Xprintflags
|
|
1869 |
} else if (match_option(option, "-Xprintflags", &tail)) {
|
|
1870 |
CommandLineFlags::printFlags();
|
|
1871 |
vm_exit(0);
|
|
1872 |
#endif
|
|
1873 |
// -D
|
|
1874 |
} else if (match_option(option, "-D", &tail)) {
|
|
1875 |
if (!add_property(tail)) {
|
|
1876 |
return JNI_ENOMEM;
|
|
1877 |
}
|
|
1878 |
// Out of the box management support
|
|
1879 |
if (match_option(option, "-Dcom.sun.management", &tail)) {
|
|
1880 |
FLAG_SET_CMDLINE(bool, ManagementServer, true);
|
|
1881 |
}
|
|
1882 |
// -Xint
|
|
1883 |
} else if (match_option(option, "-Xint", &tail)) {
|
|
1884 |
set_mode_flags(_int);
|
|
1885 |
// -Xmixed
|
|
1886 |
} else if (match_option(option, "-Xmixed", &tail)) {
|
|
1887 |
set_mode_flags(_mixed);
|
|
1888 |
// -Xcomp
|
|
1889 |
} else if (match_option(option, "-Xcomp", &tail)) {
|
|
1890 |
// for testing the compiler; turn off all flags that inhibit compilation
|
|
1891 |
set_mode_flags(_comp);
|
|
1892 |
|
|
1893 |
// -Xshare:dump
|
|
1894 |
} else if (match_option(option, "-Xshare:dump", &tail)) {
|
|
1895 |
#ifdef TIERED
|
|
1896 |
FLAG_SET_CMDLINE(bool, DumpSharedSpaces, true);
|
|
1897 |
set_mode_flags(_int); // Prevent compilation, which creates objects
|
|
1898 |
#elif defined(COMPILER2)
|
|
1899 |
vm_exit_during_initialization(
|
|
1900 |
"Dumping a shared archive is not supported on the Server JVM.", NULL);
|
|
1901 |
#elif defined(KERNEL)
|
|
1902 |
vm_exit_during_initialization(
|
|
1903 |
"Dumping a shared archive is not supported on the Kernel JVM.", NULL);
|
|
1904 |
#else
|
|
1905 |
FLAG_SET_CMDLINE(bool, DumpSharedSpaces, true);
|
|
1906 |
set_mode_flags(_int); // Prevent compilation, which creates objects
|
|
1907 |
#endif
|
|
1908 |
// -Xshare:on
|
|
1909 |
} else if (match_option(option, "-Xshare:on", &tail)) {
|
|
1910 |
FLAG_SET_CMDLINE(bool, UseSharedSpaces, true);
|
|
1911 |
FLAG_SET_CMDLINE(bool, RequireSharedSpaces, true);
|
|
1912 |
#ifdef TIERED
|
|
1913 |
FLAG_SET_CMDLINE(bool, ForceSharedSpaces, true);
|
|
1914 |
#endif // TIERED
|
|
1915 |
// -Xshare:auto
|
|
1916 |
} else if (match_option(option, "-Xshare:auto", &tail)) {
|
|
1917 |
FLAG_SET_CMDLINE(bool, UseSharedSpaces, true);
|
|
1918 |
FLAG_SET_CMDLINE(bool, RequireSharedSpaces, false);
|
|
1919 |
// -Xshare:off
|
|
1920 |
} else if (match_option(option, "-Xshare:off", &tail)) {
|
|
1921 |
FLAG_SET_CMDLINE(bool, UseSharedSpaces, false);
|
|
1922 |
FLAG_SET_CMDLINE(bool, RequireSharedSpaces, false);
|
|
1923 |
|
|
1924 |
// -Xverify
|
|
1925 |
} else if (match_option(option, "-Xverify", &tail)) {
|
|
1926 |
if (strcmp(tail, ":all") == 0 || strcmp(tail, "") == 0) {
|
|
1927 |
FLAG_SET_CMDLINE(bool, BytecodeVerificationLocal, true);
|
|
1928 |
FLAG_SET_CMDLINE(bool, BytecodeVerificationRemote, true);
|
|
1929 |
} else if (strcmp(tail, ":remote") == 0) {
|
|
1930 |
FLAG_SET_CMDLINE(bool, BytecodeVerificationLocal, false);
|
|
1931 |
FLAG_SET_CMDLINE(bool, BytecodeVerificationRemote, true);
|
|
1932 |
} else if (strcmp(tail, ":none") == 0) {
|
|
1933 |
FLAG_SET_CMDLINE(bool, BytecodeVerificationLocal, false);
|
|
1934 |
FLAG_SET_CMDLINE(bool, BytecodeVerificationRemote, false);
|
|
1935 |
} else if (is_bad_option(option, args->ignoreUnrecognized, "verification")) {
|
|
1936 |
return JNI_EINVAL;
|
|
1937 |
}
|
|
1938 |
// -Xdebug
|
|
1939 |
} else if (match_option(option, "-Xdebug", &tail)) {
|
|
1940 |
// note this flag has been used, then ignore
|
|
1941 |
set_xdebug_mode(true);
|
|
1942 |
// -Xnoagent
|
|
1943 |
} else if (match_option(option, "-Xnoagent", &tail)) {
|
|
1944 |
// For compatibility with classic. HotSpot refuses to load the old style agent.dll.
|
|
1945 |
} else if (match_option(option, "-Xboundthreads", &tail)) {
|
|
1946 |
// Bind user level threads to kernel threads (Solaris only)
|
|
1947 |
FLAG_SET_CMDLINE(bool, UseBoundThreads, true);
|
|
1948 |
} else if (match_option(option, "-Xloggc:", &tail)) {
|
|
1949 |
// Redirect GC output to the file. -Xloggc:<filename>
|
|
1950 |
// ostream_init_log(), when called will use this filename
|
|
1951 |
// to initialize a fileStream.
|
|
1952 |
_gc_log_filename = strdup(tail);
|
|
1953 |
FLAG_SET_CMDLINE(bool, PrintGC, true);
|
|
1954 |
FLAG_SET_CMDLINE(bool, PrintGCTimeStamps, true);
|
|
1955 |
FLAG_SET_CMDLINE(bool, TraceClassUnloading, true);
|
|
1956 |
|
|
1957 |
// JNI hooks
|
|
1958 |
} else if (match_option(option, "-Xcheck", &tail)) {
|
|
1959 |
if (!strcmp(tail, ":jni")) {
|
|
1960 |
CheckJNICalls = true;
|
|
1961 |
} else if (is_bad_option(option, args->ignoreUnrecognized,
|
|
1962 |
"check")) {
|
|
1963 |
return JNI_EINVAL;
|
|
1964 |
}
|
|
1965 |
} else if (match_option(option, "vfprintf", &tail)) {
|
|
1966 |
_vfprintf_hook = CAST_TO_FN_PTR(vfprintf_hook_t, option->extraInfo);
|
|
1967 |
} else if (match_option(option, "exit", &tail)) {
|
|
1968 |
_exit_hook = CAST_TO_FN_PTR(exit_hook_t, option->extraInfo);
|
|
1969 |
} else if (match_option(option, "abort", &tail)) {
|
|
1970 |
_abort_hook = CAST_TO_FN_PTR(abort_hook_t, option->extraInfo);
|
|
1971 |
// -XX:+AggressiveHeap
|
|
1972 |
} else if (match_option(option, "-XX:+AggressiveHeap", &tail)) {
|
|
1973 |
|
|
1974 |
// This option inspects the machine and attempts to set various
|
|
1975 |
// parameters to be optimal for long-running, memory allocation
|
|
1976 |
// intensive jobs. It is intended for machines with large
|
|
1977 |
// amounts of cpu and memory.
|
|
1978 |
|
|
1979 |
// initHeapSize is needed since _initial_heap_size is 4 bytes on a 32 bit
|
|
1980 |
// VM, but we may not be able to represent the total physical memory
|
|
1981 |
// available (like having 8gb of memory on a box but using a 32bit VM).
|
|
1982 |
// Thus, we need to make sure we're using a julong for intermediate
|
|
1983 |
// calculations.
|
|
1984 |
julong initHeapSize;
|
|
1985 |
julong total_memory = os::physical_memory();
|
|
1986 |
|
|
1987 |
if (total_memory < (julong)256*M) {
|
|
1988 |
jio_fprintf(defaultStream::error_stream(),
|
|
1989 |
"You need at least 256mb of memory to use -XX:+AggressiveHeap\n");
|
|
1990 |
vm_exit(1);
|
|
1991 |
}
|
|
1992 |
|
|
1993 |
// The heap size is half of available memory, or (at most)
|
|
1994 |
// all of possible memory less 160mb (leaving room for the OS
|
|
1995 |
// when using ISM). This is the maximum; because adaptive sizing
|
|
1996 |
// is turned on below, the actual space used may be smaller.
|
|
1997 |
|
|
1998 |
initHeapSize = MIN2(total_memory / (julong)2,
|
|
1999 |
total_memory - (julong)160*M);
|
|
2000 |
|
|
2001 |
// Make sure that if we have a lot of memory we cap the 32 bit
|
|
2002 |
// process space. The 64bit VM version of this function is a nop.
|
|
2003 |
initHeapSize = os::allocatable_physical_memory(initHeapSize);
|
|
2004 |
|
|
2005 |
// The perm gen is separate but contiguous with the
|
|
2006 |
// object heap (and is reserved with it) so subtract it
|
|
2007 |
// from the heap size.
|
|
2008 |
if (initHeapSize > MaxPermSize) {
|
|
2009 |
initHeapSize = initHeapSize - MaxPermSize;
|
|
2010 |
} else {
|
|
2011 |
warning("AggressiveHeap and MaxPermSize values may conflict");
|
|
2012 |
}
|
|
2013 |
|
|
2014 |
if (FLAG_IS_DEFAULT(MaxHeapSize)) {
|
|
2015 |
FLAG_SET_CMDLINE(uintx, MaxHeapSize, initHeapSize);
|
|
2016 |
set_initial_heap_size(MaxHeapSize);
|
|
2017 |
// Currently the minimum size and the initial heap sizes are the same.
|
|
2018 |
set_min_heap_size(initial_heap_size());
|
|
2019 |
}
|
|
2020 |
if (FLAG_IS_DEFAULT(NewSize)) {
|
|
2021 |
// Make the young generation 3/8ths of the total heap.
|
|
2022 |
FLAG_SET_CMDLINE(uintx, NewSize,
|
|
2023 |
((julong)MaxHeapSize / (julong)8) * (julong)3);
|
|
2024 |
FLAG_SET_CMDLINE(uintx, MaxNewSize, NewSize);
|
|
2025 |
}
|
|
2026 |
|
|
2027 |
FLAG_SET_DEFAULT(UseLargePages, true);
|
|
2028 |
|
|
2029 |
// Increase some data structure sizes for efficiency
|
|
2030 |
FLAG_SET_CMDLINE(uintx, BaseFootPrintEstimate, MaxHeapSize);
|
|
2031 |
FLAG_SET_CMDLINE(bool, ResizeTLAB, false);
|
|
2032 |
FLAG_SET_CMDLINE(uintx, TLABSize, 256*K);
|
|
2033 |
|
|
2034 |
// See the OldPLABSize comment below, but replace 'after promotion'
|
|
2035 |
// with 'after copying'. YoungPLABSize is the size of the survivor
|
|
2036 |
// space per-gc-thread buffers. The default is 4kw.
|
|
2037 |
FLAG_SET_CMDLINE(uintx, YoungPLABSize, 256*K); // Note: this is in words
|
|
2038 |
|
|
2039 |
// OldPLABSize is the size of the buffers in the old gen that
|
|
2040 |
// UseParallelGC uses to promote live data that doesn't fit in the
|
|
2041 |
// survivor spaces. At any given time, there's one for each gc thread.
|
|
2042 |
// The default size is 1kw. These buffers are rarely used, since the
|
|
2043 |
// survivor spaces are usually big enough. For specjbb, however, there
|
|
2044 |
// are occasions when there's lots of live data in the young gen
|
|
2045 |
// and we end up promoting some of it. We don't have a definite
|
|
2046 |
// explanation for why bumping OldPLABSize helps, but the theory
|
|
2047 |
// is that a bigger PLAB results in retaining something like the
|
|
2048 |
// original allocation order after promotion, which improves mutator
|
|
2049 |
// locality. A minor effect may be that larger PLABs reduce the
|
|
2050 |
// number of PLAB allocation events during gc. The value of 8kw
|
|
2051 |
// was arrived at by experimenting with specjbb.
|
|
2052 |
FLAG_SET_CMDLINE(uintx, OldPLABSize, 8*K); // Note: this is in words
|
|
2053 |
|
|
2054 |
// CompilationPolicyChoice=0 causes the server compiler to adopt
|
|
2055 |
// a more conservative which-method-do-I-compile policy when one
|
|
2056 |
// of the counters maintained by the interpreter trips. The
|
|
2057 |
// result is reduced startup time and improved specjbb and
|
|
2058 |
// alacrity performance. Zero is the default, but we set it
|
|
2059 |
// explicitly here in case the default changes.
|
|
2060 |
// See runtime/compilationPolicy.*.
|
|
2061 |
FLAG_SET_CMDLINE(intx, CompilationPolicyChoice, 0);
|
|
2062 |
|
|
2063 |
// Enable parallel GC and adaptive generation sizing
|
|
2064 |
FLAG_SET_CMDLINE(bool, UseParallelGC, true);
|
|
2065 |
FLAG_SET_DEFAULT(ParallelGCThreads, nof_parallel_gc_threads());
|
|
2066 |
|
|
2067 |
// Encourage steady state memory management
|
|
2068 |
FLAG_SET_CMDLINE(uintx, ThresholdTolerance, 100);
|
|
2069 |
|
|
2070 |
// This appears to improve mutator locality
|
|
2071 |
FLAG_SET_CMDLINE(bool, ScavengeBeforeFullGC, false);
|
|
2072 |
|
|
2073 |
// Get around early Solaris scheduling bug
|
|
2074 |
// (affinity vs other jobs on system)
|
|
2075 |
// but disallow DR and offlining (5008695).
|
|
2076 |
FLAG_SET_CMDLINE(bool, BindGCTaskThreadsToCPUs, true);
|
|
2077 |
|
|
2078 |
} else if (match_option(option, "-XX:+NeverTenure", &tail)) {
|
|
2079 |
// The last option must always win.
|
|
2080 |
FLAG_SET_CMDLINE(bool, AlwaysTenure, false);
|
|
2081 |
FLAG_SET_CMDLINE(bool, NeverTenure, true);
|
|
2082 |
} else if (match_option(option, "-XX:+AlwaysTenure", &tail)) {
|
|
2083 |
// The last option must always win.
|
|
2084 |
FLAG_SET_CMDLINE(bool, NeverTenure, false);
|
|
2085 |
FLAG_SET_CMDLINE(bool, AlwaysTenure, true);
|
|
2086 |
} else if (match_option(option, "-XX:+CMSPermGenSweepingEnabled", &tail) ||
|
|
2087 |
match_option(option, "-XX:-CMSPermGenSweepingEnabled", &tail)) {
|
|
2088 |
jio_fprintf(defaultStream::error_stream(),
|
|
2089 |
"Please use CMSClassUnloadingEnabled in place of "
|
|
2090 |
"CMSPermGenSweepingEnabled in the future\n");
|
|
2091 |
} else if (match_option(option, "-XX:+UseGCTimeLimit", &tail)) {
|
|
2092 |
FLAG_SET_CMDLINE(bool, UseGCOverheadLimit, true);
|
|
2093 |
jio_fprintf(defaultStream::error_stream(),
|
|
2094 |
"Please use -XX:+UseGCOverheadLimit in place of "
|
|
2095 |
"-XX:+UseGCTimeLimit in the future\n");
|
|
2096 |
} else if (match_option(option, "-XX:-UseGCTimeLimit", &tail)) {
|
|
2097 |
FLAG_SET_CMDLINE(bool, UseGCOverheadLimit, false);
|
|
2098 |
jio_fprintf(defaultStream::error_stream(),
|
|
2099 |
"Please use -XX:-UseGCOverheadLimit in place of "
|
|
2100 |
"-XX:-UseGCTimeLimit in the future\n");
|
|
2101 |
// The TLE options are for compatibility with 1.3 and will be
|
|
2102 |
// removed without notice in a future release. These options
|
|
2103 |
// are not to be documented.
|
|
2104 |
} else if (match_option(option, "-XX:MaxTLERatio=", &tail)) {
|
|
2105 |
// No longer used.
|
|
2106 |
} else if (match_option(option, "-XX:+ResizeTLE", &tail)) {
|
|
2107 |
FLAG_SET_CMDLINE(bool, ResizeTLAB, true);
|
|
2108 |
} else if (match_option(option, "-XX:-ResizeTLE", &tail)) {
|
|
2109 |
FLAG_SET_CMDLINE(bool, ResizeTLAB, false);
|
|
2110 |
} else if (match_option(option, "-XX:+PrintTLE", &tail)) {
|
|
2111 |
FLAG_SET_CMDLINE(bool, PrintTLAB, true);
|
|
2112 |
} else if (match_option(option, "-XX:-PrintTLE", &tail)) {
|
|
2113 |
FLAG_SET_CMDLINE(bool, PrintTLAB, false);
|
|
2114 |
} else if (match_option(option, "-XX:TLEFragmentationRatio=", &tail)) {
|
|
2115 |
// No longer used.
|
|
2116 |
} else if (match_option(option, "-XX:TLESize=", &tail)) {
|
|
2117 |
jlong long_tlab_size = 0;
|
|
2118 |
ArgsRange errcode = parse_memory_size(tail, &long_tlab_size, 1);
|
|
2119 |
if (errcode != arg_in_range) {
|
|
2120 |
jio_fprintf(defaultStream::error_stream(),
|
|
2121 |
"Invalid TLAB size: %s\n", option->optionString);
|
|
2122 |
describe_range_error(errcode);
|
|
2123 |
return JNI_EINVAL;
|
|
2124 |
}
|
|
2125 |
FLAG_SET_CMDLINE(uintx, TLABSize, long_tlab_size);
|
|
2126 |
} else if (match_option(option, "-XX:TLEThreadRatio=", &tail)) {
|
|
2127 |
// No longer used.
|
|
2128 |
} else if (match_option(option, "-XX:+UseTLE", &tail)) {
|
|
2129 |
FLAG_SET_CMDLINE(bool, UseTLAB, true);
|
|
2130 |
} else if (match_option(option, "-XX:-UseTLE", &tail)) {
|
|
2131 |
FLAG_SET_CMDLINE(bool, UseTLAB, false);
|
|
2132 |
SOLARIS_ONLY(
|
|
2133 |
} else if (match_option(option, "-XX:+UsePermISM", &tail)) {
|
|
2134 |
warning("-XX:+UsePermISM is obsolete.");
|
|
2135 |
FLAG_SET_CMDLINE(bool, UseISM, true);
|
|
2136 |
} else if (match_option(option, "-XX:-UsePermISM", &tail)) {
|
|
2137 |
FLAG_SET_CMDLINE(bool, UseISM, false);
|
|
2138 |
)
|
|
2139 |
} else if (match_option(option, "-XX:+DisplayVMOutputToStderr", &tail)) {
|
|
2140 |
FLAG_SET_CMDLINE(bool, DisplayVMOutputToStdout, false);
|
|
2141 |
FLAG_SET_CMDLINE(bool, DisplayVMOutputToStderr, true);
|
|
2142 |
} else if (match_option(option, "-XX:+DisplayVMOutputToStdout", &tail)) {
|
|
2143 |
FLAG_SET_CMDLINE(bool, DisplayVMOutputToStderr, false);
|
|
2144 |
FLAG_SET_CMDLINE(bool, DisplayVMOutputToStdout, true);
|
|
2145 |
} else if (match_option(option, "-XX:+ExtendedDTraceProbes", &tail)) {
|
|
2146 |
#ifdef SOLARIS
|
|
2147 |
FLAG_SET_CMDLINE(bool, ExtendedDTraceProbes, true);
|
|
2148 |
FLAG_SET_CMDLINE(bool, DTraceMethodProbes, true);
|
|
2149 |
FLAG_SET_CMDLINE(bool, DTraceAllocProbes, true);
|
|
2150 |
FLAG_SET_CMDLINE(bool, DTraceMonitorProbes, true);
|
|
2151 |
#else // ndef SOLARIS
|
|
2152 |
jio_fprintf(defaultStream::error_stream(),
|
|
2153 |
"ExtendedDTraceProbes flag is only applicable on Solaris\n");
|
|
2154 |
return JNI_EINVAL;
|
|
2155 |
#endif // ndef SOLARIS
|
|
2156 |
} else
|
|
2157 |
#ifdef ASSERT
|
|
2158 |
if (match_option(option, "-XX:+FullGCALot", &tail)) {
|
|
2159 |
FLAG_SET_CMDLINE(bool, FullGCALot, true);
|
|
2160 |
// disable scavenge before parallel mark-compact
|
|
2161 |
FLAG_SET_CMDLINE(bool, ScavengeBeforeFullGC, false);
|
|
2162 |
} else
|
|
2163 |
#endif
|
|
2164 |
if (match_option(option, "-XX:ParCMSPromoteBlocksToClaim=", &tail)) {
|
|
2165 |
julong cms_blocks_to_claim = (julong)atol(tail);
|
|
2166 |
FLAG_SET_CMDLINE(uintx, CMSParPromoteBlocksToClaim, cms_blocks_to_claim);
|
|
2167 |
jio_fprintf(defaultStream::error_stream(),
|
|
2168 |
"Please use -XX:CMSParPromoteBlocksToClaim in place of "
|
|
2169 |
"-XX:ParCMSPromoteBlocksToClaim in the future\n");
|
|
2170 |
} else
|
|
2171 |
if (match_option(option, "-XX:ParallelGCOldGenAllocBufferSize=", &tail)) {
|
|
2172 |
jlong old_plab_size = 0;
|
|
2173 |
ArgsRange errcode = parse_memory_size(tail, &old_plab_size, 1);
|
|
2174 |
if (errcode != arg_in_range) {
|
|
2175 |
jio_fprintf(defaultStream::error_stream(),
|
|
2176 |
"Invalid old PLAB size: %s\n", option->optionString);
|
|
2177 |
describe_range_error(errcode);
|
|
2178 |
return JNI_EINVAL;
|
|
2179 |
}
|
|
2180 |
FLAG_SET_CMDLINE(uintx, OldPLABSize, (julong)old_plab_size);
|
|
2181 |
jio_fprintf(defaultStream::error_stream(),
|
|
2182 |
"Please use -XX:OldPLABSize in place of "
|
|
2183 |
"-XX:ParallelGCOldGenAllocBufferSize in the future\n");
|
|
2184 |
} else
|
|
2185 |
if (match_option(option, "-XX:ParallelGCToSpaceAllocBufferSize=", &tail)) {
|
|
2186 |
jlong young_plab_size = 0;
|
|
2187 |
ArgsRange errcode = parse_memory_size(tail, &young_plab_size, 1);
|
|
2188 |
if (errcode != arg_in_range) {
|
|
2189 |
jio_fprintf(defaultStream::error_stream(),
|
|
2190 |
"Invalid young PLAB size: %s\n", option->optionString);
|
|
2191 |
describe_range_error(errcode);
|
|
2192 |
return JNI_EINVAL;
|
|
2193 |
}
|
|
2194 |
FLAG_SET_CMDLINE(uintx, YoungPLABSize, (julong)young_plab_size);
|
|
2195 |
jio_fprintf(defaultStream::error_stream(),
|
|
2196 |
"Please use -XX:YoungPLABSize in place of "
|
|
2197 |
"-XX:ParallelGCToSpaceAllocBufferSize in the future\n");
|
|
2198 |
} else
|
|
2199 |
if (match_option(option, "-XX:", &tail)) { // -XX:xxxx
|
|
2200 |
// Skip -XX:Flags= since that case has already been handled
|
|
2201 |
if (strncmp(tail, "Flags=", strlen("Flags=")) != 0) {
|
|
2202 |
if (!process_argument(tail, args->ignoreUnrecognized, origin)) {
|
|
2203 |
return JNI_EINVAL;
|
|
2204 |
}
|
|
2205 |
}
|
|
2206 |
// Unknown option
|
|
2207 |
} else if (is_bad_option(option, args->ignoreUnrecognized)) {
|
|
2208 |
return JNI_ERR;
|
|
2209 |
}
|
|
2210 |
}
|
|
2211 |
|
|
2212 |
return JNI_OK;
|
|
2213 |
}
|
|
2214 |
|
|
2215 |
jint Arguments::finalize_vm_init_args(SysClassPath* scp_p, bool scp_assembly_required) {
|
|
2216 |
// This must be done after all -D arguments have been processed.
|
|
2217 |
scp_p->expand_endorsed();
|
|
2218 |
|
|
2219 |
if (scp_assembly_required || scp_p->get_endorsed() != NULL) {
|
|
2220 |
// Assemble the bootclasspath elements into the final path.
|
|
2221 |
Arguments::set_sysclasspath(scp_p->combined_path());
|
|
2222 |
}
|
|
2223 |
|
|
2224 |
// This must be done after all arguments have been processed.
|
|
2225 |
// java_compiler() true means set to "NONE" or empty.
|
|
2226 |
if (java_compiler() && !xdebug_mode()) {
|
|
2227 |
// For backwards compatibility, we switch to interpreted mode if
|
|
2228 |
// -Djava.compiler="NONE" or "" is specified AND "-Xdebug" was
|
|
2229 |
// not specified.
|
|
2230 |
set_mode_flags(_int);
|
|
2231 |
}
|
|
2232 |
if (CompileThreshold == 0) {
|
|
2233 |
set_mode_flags(_int);
|
|
2234 |
}
|
|
2235 |
|
|
2236 |
#ifdef TIERED
|
|
2237 |
// If we are using tiered compilation in the tiered vm then c1 will
|
|
2238 |
// do the profiling and we don't want to waste that time in the
|
|
2239 |
// interpreter.
|
|
2240 |
if (TieredCompilation) {
|
|
2241 |
ProfileInterpreter = false;
|
|
2242 |
} else {
|
|
2243 |
// Since we are running vanilla server we must adjust the compile threshold
|
|
2244 |
// unless the user has already adjusted it because the default threshold assumes
|
|
2245 |
// we will run tiered.
|
|
2246 |
|
|
2247 |
if (FLAG_IS_DEFAULT(CompileThreshold)) {
|
|
2248 |
CompileThreshold = Tier2CompileThreshold;
|
|
2249 |
}
|
|
2250 |
}
|
|
2251 |
#endif // TIERED
|
|
2252 |
|
|
2253 |
#ifndef COMPILER2
|
|
2254 |
// Don't degrade server performance for footprint
|
|
2255 |
if (FLAG_IS_DEFAULT(UseLargePages) &&
|
|
2256 |
MaxHeapSize < LargePageHeapSizeThreshold) {
|
|
2257 |
// No need for large granularity pages w/small heaps.
|
|
2258 |
// Note that large pages are enabled/disabled for both the
|
|
2259 |
// Java heap and the code cache.
|
|
2260 |
FLAG_SET_DEFAULT(UseLargePages, false);
|
|
2261 |
SOLARIS_ONLY(FLAG_SET_DEFAULT(UseMPSS, false));
|
|
2262 |
SOLARIS_ONLY(FLAG_SET_DEFAULT(UseISM, false));
|
|
2263 |
}
|
|
2264 |
#else
|
|
2265 |
if (!FLAG_IS_DEFAULT(OptoLoopAlignment) && FLAG_IS_DEFAULT(MaxLoopPad)) {
|
|
2266 |
FLAG_SET_DEFAULT(MaxLoopPad, OptoLoopAlignment-1);
|
|
2267 |
}
|
|
2268 |
#endif
|
|
2269 |
|
|
2270 |
if (!check_vm_args_consistency()) {
|
|
2271 |
return JNI_ERR;
|
|
2272 |
}
|
|
2273 |
|
|
2274 |
return JNI_OK;
|
|
2275 |
}
|
|
2276 |
|
|
2277 |
jint Arguments::parse_java_options_environment_variable(SysClassPath* scp_p, bool* scp_assembly_required_p) {
|
|
2278 |
return parse_options_environment_variable("_JAVA_OPTIONS", scp_p,
|
|
2279 |
scp_assembly_required_p);
|
|
2280 |
}
|
|
2281 |
|
|
2282 |
jint Arguments::parse_java_tool_options_environment_variable(SysClassPath* scp_p, bool* scp_assembly_required_p) {
|
|
2283 |
return parse_options_environment_variable("JAVA_TOOL_OPTIONS", scp_p,
|
|
2284 |
scp_assembly_required_p);
|
|
2285 |
}
|
|
2286 |
|
|
2287 |
jint Arguments::parse_options_environment_variable(const char* name, SysClassPath* scp_p, bool* scp_assembly_required_p) {
|
|
2288 |
const int N_MAX_OPTIONS = 64;
|
|
2289 |
const int OPTION_BUFFER_SIZE = 1024;
|
|
2290 |
char buffer[OPTION_BUFFER_SIZE];
|
|
2291 |
|
|
2292 |
// The variable will be ignored if it exceeds the length of the buffer.
|
|
2293 |
// Don't check this variable if user has special privileges
|
|
2294 |
// (e.g. unix su command).
|
|
2295 |
if (os::getenv(name, buffer, sizeof(buffer)) &&
|
|
2296 |
!os::have_special_privileges()) {
|
|
2297 |
JavaVMOption options[N_MAX_OPTIONS]; // Construct option array
|
|
2298 |
jio_fprintf(defaultStream::error_stream(),
|
|
2299 |
"Picked up %s: %s\n", name, buffer);
|
|
2300 |
char* rd = buffer; // pointer to the input string (rd)
|
|
2301 |
int i;
|
|
2302 |
for (i = 0; i < N_MAX_OPTIONS;) { // repeat for all options in the input string
|
|
2303 |
while (isspace(*rd)) rd++; // skip whitespace
|
|
2304 |
if (*rd == 0) break; // we re done when the input string is read completely
|
|
2305 |
|
|
2306 |
// The output, option string, overwrites the input string.
|
|
2307 |
// Because of quoting, the pointer to the option string (wrt) may lag the pointer to
|
|
2308 |
// input string (rd).
|
|
2309 |
char* wrt = rd;
|
|
2310 |
|
|
2311 |
options[i++].optionString = wrt; // Fill in option
|
|
2312 |
while (*rd != 0 && !isspace(*rd)) { // unquoted strings terminate with a space or NULL
|
|
2313 |
if (*rd == '\'' || *rd == '"') { // handle a quoted string
|
|
2314 |
int quote = *rd; // matching quote to look for
|
|
2315 |
rd++; // don't copy open quote
|
|
2316 |
while (*rd != quote) { // include everything (even spaces) up until quote
|
|
2317 |
if (*rd == 0) { // string termination means unmatched string
|
|
2318 |
jio_fprintf(defaultStream::error_stream(),
|
|
2319 |
"Unmatched quote in %s\n", name);
|
|
2320 |
return JNI_ERR;
|
|
2321 |
}
|
|
2322 |
*wrt++ = *rd++; // copy to option string
|
|
2323 |
}
|
|
2324 |
rd++; // don't copy close quote
|
|
2325 |
} else {
|
|
2326 |
*wrt++ = *rd++; // copy to option string
|
|
2327 |
}
|
|
2328 |
}
|
|
2329 |
// Need to check if we're done before writing a NULL,
|
|
2330 |
// because the write could be to the byte that rd is pointing to.
|
|
2331 |
if (*rd++ == 0) {
|
|
2332 |
*wrt = 0;
|
|
2333 |
break;
|
|
2334 |
}
|
|
2335 |
*wrt = 0; // Zero terminate option
|
|
2336 |
}
|
|
2337 |
// Construct JavaVMInitArgs structure and parse as if it was part of the command line
|
|
2338 |
JavaVMInitArgs vm_args;
|
|
2339 |
vm_args.version = JNI_VERSION_1_2;
|
|
2340 |
vm_args.options = options;
|
|
2341 |
vm_args.nOptions = i;
|
|
2342 |
vm_args.ignoreUnrecognized = false;
|
|
2343 |
|
|
2344 |
if (PrintVMOptions) {
|
|
2345 |
const char* tail;
|
|
2346 |
for (int i = 0; i < vm_args.nOptions; i++) {
|
|
2347 |
const JavaVMOption *option = vm_args.options + i;
|
|
2348 |
if (match_option(option, "-XX:", &tail)) {
|
|
2349 |
logOption(tail);
|
|
2350 |
}
|
|
2351 |
}
|
|
2352 |
}
|
|
2353 |
|
|
2354 |
return(parse_each_vm_init_arg(&vm_args, scp_p, scp_assembly_required_p, ENVIRON_VAR));
|
|
2355 |
}
|
|
2356 |
return JNI_OK;
|
|
2357 |
}
|
|
2358 |
|
|
2359 |
// Parse entry point called from JNI_CreateJavaVM
|
|
2360 |
|
|
2361 |
jint Arguments::parse(const JavaVMInitArgs* args) {
|
|
2362 |
|
|
2363 |
// Sharing support
|
|
2364 |
// Construct the path to the archive
|
|
2365 |
char jvm_path[JVM_MAXPATHLEN];
|
|
2366 |
os::jvm_path(jvm_path, sizeof(jvm_path));
|
|
2367 |
#ifdef TIERED
|
|
2368 |
if (strstr(jvm_path, "client") != NULL) {
|
|
2369 |
force_client_mode = true;
|
|
2370 |
}
|
|
2371 |
#endif // TIERED
|
|
2372 |
char *end = strrchr(jvm_path, *os::file_separator());
|
|
2373 |
if (end != NULL) *end = '\0';
|
|
2374 |
char *shared_archive_path = NEW_C_HEAP_ARRAY(char, strlen(jvm_path) +
|
|
2375 |
strlen(os::file_separator()) + 20);
|
|
2376 |
if (shared_archive_path == NULL) return JNI_ENOMEM;
|
|
2377 |
strcpy(shared_archive_path, jvm_path);
|
|
2378 |
strcat(shared_archive_path, os::file_separator());
|
|
2379 |
strcat(shared_archive_path, "classes");
|
|
2380 |
DEBUG_ONLY(strcat(shared_archive_path, "_g");)
|
|
2381 |
strcat(shared_archive_path, ".jsa");
|
|
2382 |
SharedArchivePath = shared_archive_path;
|
|
2383 |
|
|
2384 |
// Remaining part of option string
|
|
2385 |
const char* tail;
|
|
2386 |
|
|
2387 |
// If flag "-XX:Flags=flags-file" is used it will be the first option to be processed.
|
|
2388 |
bool settings_file_specified = false;
|
|
2389 |
int index;
|
|
2390 |
for (index = 0; index < args->nOptions; index++) {
|
|
2391 |
const JavaVMOption *option = args->options + index;
|
|
2392 |
if (match_option(option, "-XX:Flags=", &tail)) {
|
|
2393 |
if (!process_settings_file(tail, true, args->ignoreUnrecognized)) {
|
|
2394 |
return JNI_EINVAL;
|
|
2395 |
}
|
|
2396 |
settings_file_specified = true;
|
|
2397 |
}
|
|
2398 |
if (match_option(option, "-XX:+PrintVMOptions", &tail)) {
|
|
2399 |
PrintVMOptions = true;
|
|
2400 |
}
|
|
2401 |
}
|
|
2402 |
|
|
2403 |
// Parse default .hotspotrc settings file
|
|
2404 |
if (!settings_file_specified) {
|
|
2405 |
if (!process_settings_file(".hotspotrc", false, args->ignoreUnrecognized)) {
|
|
2406 |
return JNI_EINVAL;
|
|
2407 |
}
|
|
2408 |
}
|
|
2409 |
|
|
2410 |
if (PrintVMOptions) {
|
|
2411 |
for (index = 0; index < args->nOptions; index++) {
|
|
2412 |
const JavaVMOption *option = args->options + index;
|
|
2413 |
if (match_option(option, "-XX:", &tail)) {
|
|
2414 |
logOption(tail);
|
|
2415 |
}
|
|
2416 |
}
|
|
2417 |
}
|
|
2418 |
|
|
2419 |
// Parse JavaVMInitArgs structure passed in, as well as JAVA_TOOL_OPTIONS and _JAVA_OPTIONS
|
|
2420 |
jint result = parse_vm_init_args(args);
|
|
2421 |
if (result != JNI_OK) {
|
|
2422 |
return result;
|
|
2423 |
}
|
|
2424 |
|
|
2425 |
#ifndef PRODUCT
|
|
2426 |
if (TraceBytecodesAt != 0) {
|
|
2427 |
TraceBytecodes = true;
|
|
2428 |
}
|
|
2429 |
if (CountCompiledCalls) {
|
|
2430 |
if (UseCounterDecay) {
|
|
2431 |
warning("UseCounterDecay disabled because CountCalls is set");
|
|
2432 |
UseCounterDecay = false;
|
|
2433 |
}
|
|
2434 |
}
|
|
2435 |
#endif // PRODUCT
|
|
2436 |
|
|
2437 |
if (PrintGCDetails) {
|
|
2438 |
// Turn on -verbose:gc options as well
|
|
2439 |
PrintGC = true;
|
|
2440 |
if (FLAG_IS_DEFAULT(TraceClassUnloading)) {
|
|
2441 |
TraceClassUnloading = true;
|
|
2442 |
}
|
|
2443 |
}
|
|
2444 |
|
|
2445 |
#ifdef SERIALGC
|
|
2446 |
set_serial_gc_flags();
|
|
2447 |
#endif // SERIALGC
|
|
2448 |
#ifdef KERNEL
|
|
2449 |
no_shared_spaces();
|
|
2450 |
#endif // KERNEL
|
|
2451 |
|
|
2452 |
// Set some flags for ParallelGC if needed.
|
|
2453 |
set_parallel_gc_flags();
|
|
2454 |
|
|
2455 |
// Set some flags for CMS and/or ParNew collectors, as needed.
|
|
2456 |
set_cms_and_parnew_gc_flags();
|
|
2457 |
|
|
2458 |
// Set flags based on ergonomics.
|
|
2459 |
set_ergonomics_flags();
|
|
2460 |
|
|
2461 |
#ifdef SERIALGC
|
|
2462 |
assert(verify_serial_gc_flags(), "SerialGC unset");
|
|
2463 |
#endif // SERIALGC
|
|
2464 |
|
|
2465 |
// Set bytecode rewriting flags
|
|
2466 |
set_bytecode_flags();
|
|
2467 |
|
|
2468 |
// Set flags if Aggressive optimization flags (-XX:+AggressiveOpts) enabled.
|
|
2469 |
set_aggressive_opts_flags();
|
|
2470 |
|
|
2471 |
#ifdef CC_INTERP
|
|
2472 |
// Biased locking is not implemented with c++ interpreter
|
|
2473 |
FLAG_SET_DEFAULT(UseBiasedLocking, false);
|
|
2474 |
#endif /* CC_INTERP */
|
|
2475 |
|
|
2476 |
if (PrintCommandLineFlags) {
|
|
2477 |
CommandLineFlags::printSetFlags();
|
|
2478 |
}
|
|
2479 |
|
|
2480 |
return JNI_OK;
|
|
2481 |
}
|
|
2482 |
|
|
2483 |
int Arguments::PropertyList_count(SystemProperty* pl) {
|
|
2484 |
int count = 0;
|
|
2485 |
while(pl != NULL) {
|
|
2486 |
count++;
|
|
2487 |
pl = pl->next();
|
|
2488 |
}
|
|
2489 |
return count;
|
|
2490 |
}
|
|
2491 |
|
|
2492 |
const char* Arguments::PropertyList_get_value(SystemProperty *pl, const char* key) {
|
|
2493 |
assert(key != NULL, "just checking");
|
|
2494 |
SystemProperty* prop;
|
|
2495 |
for (prop = pl; prop != NULL; prop = prop->next()) {
|
|
2496 |
if (strcmp(key, prop->key()) == 0) return prop->value();
|
|
2497 |
}
|
|
2498 |
return NULL;
|
|
2499 |
}
|
|
2500 |
|
|
2501 |
const char* Arguments::PropertyList_get_key_at(SystemProperty *pl, int index) {
|
|
2502 |
int count = 0;
|
|
2503 |
const char* ret_val = NULL;
|
|
2504 |
|
|
2505 |
while(pl != NULL) {
|
|
2506 |
if(count >= index) {
|
|
2507 |
ret_val = pl->key();
|
|
2508 |
break;
|
|
2509 |
}
|
|
2510 |
count++;
|
|
2511 |
pl = pl->next();
|
|
2512 |
}
|
|
2513 |
|
|
2514 |
return ret_val;
|
|
2515 |
}
|
|
2516 |
|
|
2517 |
char* Arguments::PropertyList_get_value_at(SystemProperty* pl, int index) {
|
|
2518 |
int count = 0;
|
|
2519 |
char* ret_val = NULL;
|
|
2520 |
|
|
2521 |
while(pl != NULL) {
|
|
2522 |
if(count >= index) {
|
|
2523 |
ret_val = pl->value();
|
|
2524 |
break;
|
|
2525 |
}
|
|
2526 |
count++;
|
|
2527 |
pl = pl->next();
|
|
2528 |
}
|
|
2529 |
|
|
2530 |
return ret_val;
|
|
2531 |
}
|
|
2532 |
|
|
2533 |
void Arguments::PropertyList_add(SystemProperty** plist, SystemProperty *new_p) {
|
|
2534 |
SystemProperty* p = *plist;
|
|
2535 |
if (p == NULL) {
|
|
2536 |
*plist = new_p;
|
|
2537 |
} else {
|
|
2538 |
while (p->next() != NULL) {
|
|
2539 |
p = p->next();
|
|
2540 |
}
|
|
2541 |
p->set_next(new_p);
|
|
2542 |
}
|
|
2543 |
}
|
|
2544 |
|
|
2545 |
void Arguments::PropertyList_add(SystemProperty** plist, const char* k, char* v) {
|
|
2546 |
if (plist == NULL)
|
|
2547 |
return;
|
|
2548 |
|
|
2549 |
SystemProperty* new_p = new SystemProperty(k, v, true);
|
|
2550 |
PropertyList_add(plist, new_p);
|
|
2551 |
}
|
|
2552 |
|
|
2553 |
// This add maintains unique property key in the list.
|
|
2554 |
void Arguments::PropertyList_unique_add(SystemProperty** plist, const char* k, char* v) {
|
|
2555 |
if (plist == NULL)
|
|
2556 |
return;
|
|
2557 |
|
|
2558 |
// If property key exist then update with new value.
|
|
2559 |
SystemProperty* prop;
|
|
2560 |
for (prop = *plist; prop != NULL; prop = prop->next()) {
|
|
2561 |
if (strcmp(k, prop->key()) == 0) {
|
|
2562 |
prop->set_value(v);
|
|
2563 |
return;
|
|
2564 |
}
|
|
2565 |
}
|
|
2566 |
|
|
2567 |
PropertyList_add(plist, k, v);
|
|
2568 |
}
|
|
2569 |
|
|
2570 |
#ifdef KERNEL
|
|
2571 |
char *Arguments::get_kernel_properties() {
|
|
2572 |
// Find properties starting with kernel and append them to string
|
|
2573 |
// We need to find out how long they are first because the URL's that they
|
|
2574 |
// might point to could get long.
|
|
2575 |
int length = 0;
|
|
2576 |
SystemProperty* prop;
|
|
2577 |
for (prop = _system_properties; prop != NULL; prop = prop->next()) {
|
|
2578 |
if (strncmp(prop->key(), "kernel.", 7 ) == 0) {
|
|
2579 |
length += (strlen(prop->key()) + strlen(prop->value()) + 5); // "-D ="
|
|
2580 |
}
|
|
2581 |
}
|
|
2582 |
// Add one for null terminator.
|
|
2583 |
char *props = AllocateHeap(length + 1, "get_kernel_properties");
|
|
2584 |
if (length != 0) {
|
|
2585 |
int pos = 0;
|
|
2586 |
for (prop = _system_properties; prop != NULL; prop = prop->next()) {
|
|
2587 |
if (strncmp(prop->key(), "kernel.", 7 ) == 0) {
|
|
2588 |
jio_snprintf(&props[pos], length-pos,
|
|
2589 |
"-D%s=%s ", prop->key(), prop->value());
|
|
2590 |
pos = strlen(props);
|
|
2591 |
}
|
|
2592 |
}
|
|
2593 |
}
|
|
2594 |
// null terminate props in case of null
|
|
2595 |
props[length] = '\0';
|
|
2596 |
return props;
|
|
2597 |
}
|
|
2598 |
#endif // KERNEL
|
|
2599 |
|
|
2600 |
// Copies src into buf, replacing "%%" with "%" and "%p" with pid
|
|
2601 |
// Returns true if all of the source pointed by src has been copied over to
|
|
2602 |
// the destination buffer pointed by buf. Otherwise, returns false.
|
|
2603 |
// Notes:
|
|
2604 |
// 1. If the length (buflen) of the destination buffer excluding the
|
|
2605 |
// NULL terminator character is not long enough for holding the expanded
|
|
2606 |
// pid characters, it also returns false instead of returning the partially
|
|
2607 |
// expanded one.
|
|
2608 |
// 2. The passed in "buflen" should be large enough to hold the null terminator.
|
|
2609 |
bool Arguments::copy_expand_pid(const char* src, size_t srclen,
|
|
2610 |
char* buf, size_t buflen) {
|
|
2611 |
const char* p = src;
|
|
2612 |
char* b = buf;
|
|
2613 |
const char* src_end = &src[srclen];
|
|
2614 |
char* buf_end = &buf[buflen - 1];
|
|
2615 |
|
|
2616 |
while (p < src_end && b < buf_end) {
|
|
2617 |
if (*p == '%') {
|
|
2618 |
switch (*(++p)) {
|
|
2619 |
case '%': // "%%" ==> "%"
|
|
2620 |
*b++ = *p++;
|
|
2621 |
break;
|
|
2622 |
case 'p': { // "%p" ==> current process id
|
|
2623 |
// buf_end points to the character before the last character so
|
|
2624 |
// that we could write '\0' to the end of the buffer.
|
|
2625 |
size_t buf_sz = buf_end - b + 1;
|
|
2626 |
int ret = jio_snprintf(b, buf_sz, "%d", os::current_process_id());
|
|
2627 |
|
|
2628 |
// if jio_snprintf fails or the buffer is not long enough to hold
|
|
2629 |
// the expanded pid, returns false.
|
|
2630 |
if (ret < 0 || ret >= (int)buf_sz) {
|
|
2631 |
return false;
|
|
2632 |
} else {
|
|
2633 |
b += ret;
|
|
2634 |
assert(*b == '\0', "fail in copy_expand_pid");
|
|
2635 |
if (p == src_end && b == buf_end + 1) {
|
|
2636 |
// reach the end of the buffer.
|
|
2637 |
return true;
|
|
2638 |
}
|
|
2639 |
}
|
|
2640 |
p++;
|
|
2641 |
break;
|
|
2642 |
}
|
|
2643 |
default :
|
|
2644 |
*b++ = '%';
|
|
2645 |
}
|
|
2646 |
} else {
|
|
2647 |
*b++ = *p++;
|
|
2648 |
}
|
|
2649 |
}
|
|
2650 |
*b = '\0';
|
|
2651 |
return (p == src_end); // return false if not all of the source was copied
|
|
2652 |
}
|