/* * Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. * */ // Arguments parses the command line and recognizes options // Invocation API hook typedefs (these should really be defined in jni.hpp) extern "C" { typedef void (JNICALL *abort_hook_t)(void); typedef void (JNICALL *exit_hook_t)(jint code); typedef jint (JNICALL *vfprintf_hook_t)(FILE *fp, const char *format, va_list args); } // Forward declarations class SysClassPath; // Element describing System and User (-Dkey=value flags) defined property. class SystemProperty: public CHeapObj { private: char* _key; char* _value; SystemProperty* _next; bool _writeable; bool writeable() { return _writeable; } public: // Accessors const char* key() const { return _key; } char* value() const { return _value; } SystemProperty* next() const { return _next; } void set_next(SystemProperty* next) { _next = next; } bool set_value(char *value) { if (writeable()) { if (_value != NULL) { FreeHeap(_value); } _value = AllocateHeap(strlen(value)+1); if (_value != NULL) { strcpy(_value, value); } return true; } return false; } void append_value(const char *value) { char *sp; size_t len = 0; if (value != NULL) { len = strlen(value); if (_value != NULL) { len += strlen(_value); } sp = AllocateHeap(len+2); if (sp != NULL) { if (_value != NULL) { strcpy(sp, _value); strcat(sp, os::path_separator()); strcat(sp, value); FreeHeap(_value); } else { strcpy(sp, value); } _value = sp; } } } // Constructor SystemProperty(const char* key, const char* value, bool writeable) { if (key == NULL) { _key = NULL; } else { _key = AllocateHeap(strlen(key)+1); strcpy(_key, key); } if (value == NULL) { _value = NULL; } else { _value = AllocateHeap(strlen(value)+1); strcpy(_value, value); } _next = NULL; _writeable = writeable; } }; // For use by -agentlib, -agentpath and -Xrun class AgentLibrary : public CHeapObj { friend class AgentLibraryList; private: char* _name; char* _options; void* _os_lib; bool _is_absolute_path; AgentLibrary* _next; public: // Accessors const char* name() const { return _name; } char* options() const { return _options; } bool is_absolute_path() const { return _is_absolute_path; } void* os_lib() const { return _os_lib; } void set_os_lib(void* os_lib) { _os_lib = os_lib; } AgentLibrary* next() const { return _next; } // Constructor AgentLibrary(const char* name, const char* options, bool is_absolute_path, void* os_lib) { _name = AllocateHeap(strlen(name)+1); strcpy(_name, name); if (options == NULL) { _options = NULL; } else { _options = AllocateHeap(strlen(options)+1); strcpy(_options, options); } _is_absolute_path = is_absolute_path; _os_lib = os_lib; _next = NULL; } }; // maintain an order of entry list of AgentLibrary class AgentLibraryList VALUE_OBJ_CLASS_SPEC { private: AgentLibrary* _first; AgentLibrary* _last; public: bool is_empty() const { return _first == NULL; } AgentLibrary* first() const { return _first; } // add to the end of the list void add(AgentLibrary* lib) { if (is_empty()) { _first = _last = lib; } else { _last->_next = lib; _last = lib; } lib->_next = NULL; } // search for and remove a library known to be in the list void remove(AgentLibrary* lib) { AgentLibrary* curr; AgentLibrary* prev = NULL; for (curr = first(); curr != NULL; prev = curr, curr = curr->next()) { if (curr == lib) { break; } } assert(curr != NULL, "always should be found"); if (curr != NULL) { // it was found, by-pass this library if (prev == NULL) { _first = curr->_next; } else { prev->_next = curr->_next; } if (curr == _last) { _last = prev; } curr->_next = NULL; } } AgentLibraryList() { _first = NULL; _last = NULL; } }; class Arguments : AllStatic { friend class VMStructs; friend class JvmtiExport; public: // Operation modi enum Mode { _int, // corresponds to -Xint _mixed, // corresponds to -Xmixed _comp // corresponds to -Xcomp }; enum ArgsRange { arg_unreadable = -3, arg_too_small = -2, arg_too_big = -1, arg_in_range = 0 }; private: // an array containing all flags specified in the .hotspotrc file static char** _jvm_flags_array; static int _num_jvm_flags; // an array containing all jvm arguments specified in the command line static char** _jvm_args_array; static int _num_jvm_args; // string containing all java command (class/jarfile name and app args) static char* _java_command; // Property list static SystemProperty* _system_properties; // Quick accessor to System properties in the list: static SystemProperty *_java_ext_dirs; static SystemProperty *_java_endorsed_dirs; static SystemProperty *_sun_boot_library_path; static SystemProperty *_java_library_path; static SystemProperty *_java_home; static SystemProperty *_java_class_path; static SystemProperty *_sun_boot_class_path; // Meta-index for knowing what packages are in the boot class path static char* _meta_index_path; static char* _meta_index_dir; // java.vendor.url.bug, bug reporting URL for fatal errors. static const char* _java_vendor_url_bug; // sun.java.launcher, private property to provide information about // java/gamma launcher static const char* _sun_java_launcher; // sun.java.launcher.pid, private property static int _sun_java_launcher_pid; // Option flags static bool _has_profile; static bool _has_alloc_profile; static const char* _gc_log_filename; static uintx _min_heap_size; // -Xrun arguments static AgentLibraryList _libraryList; static void add_init_library(const char* name, char* options) { _libraryList.add(new AgentLibrary(name, options, false, NULL)); } // -agentlib and -agentpath arguments static AgentLibraryList _agentList; static void add_init_agent(const char* name, char* options, bool absolute_path) { _agentList.add(new AgentLibrary(name, options, absolute_path, NULL)); } // Late-binding agents not started via arguments static void add_loaded_agent(const char* name, char* options, bool absolute_path, void* os_lib) { _agentList.add(new AgentLibrary(name, options, absolute_path, os_lib)); } // Operation modi static Mode _mode; static void set_mode_flags(Mode mode); static bool _java_compiler; static void set_java_compiler(bool arg) { _java_compiler = arg; } static bool java_compiler() { return _java_compiler; } // -Xdebug flag static bool _xdebug_mode; static void set_xdebug_mode(bool arg) { _xdebug_mode = arg; } static bool xdebug_mode() { return _xdebug_mode; } // Used to save default settings static bool _AlwaysCompileLoopMethods; static bool _UseOnStackReplacement; static bool _BackgroundCompilation; static bool _ClipInlining; static bool _CIDynamicCompilePriority; // Tiered static void set_tiered_flags(); // Check compressed oops compatibility with other flags static void check_compressed_oops_compat(); // CMS/ParNew garbage collectors static void set_parnew_gc_flags(); static void set_cms_and_parnew_gc_flags(); // UseParallel[Old]GC static void set_parallel_gc_flags(); // Garbage-First (UseG1GC) static void set_g1_gc_flags(); // GC ergonomics static void set_ergonomics_flags(); // Setup heap size static void set_heap_size(); // Based on automatic selection criteria, should the // low pause collector be used. static bool should_auto_select_low_pause_collector(); // Bytecode rewriting static void set_bytecode_flags(); // Invocation API hooks static abort_hook_t _abort_hook; static exit_hook_t _exit_hook; static vfprintf_hook_t _vfprintf_hook; // System properties static bool add_property(const char* prop); // Aggressive optimization flags. static void set_aggressive_opts_flags(); // Argument parsing static void do_pd_flag_adjustments(); static bool parse_argument(const char* arg, FlagValueOrigin origin); static bool process_argument(const char* arg, jboolean ignore_unrecognized, FlagValueOrigin origin); static void process_java_launcher_argument(const char*, void*); static void process_java_compiler_argument(char* arg); static jint parse_options_environment_variable(const char* name, SysClassPath* scp_p, bool* scp_assembly_required_p); static jint parse_java_tool_options_environment_variable(SysClassPath* scp_p, bool* scp_assembly_required_p); static jint parse_java_options_environment_variable(SysClassPath* scp_p, bool* scp_assembly_required_p); static jint parse_vm_init_args(const JavaVMInitArgs* args); static jint parse_each_vm_init_arg(const JavaVMInitArgs* args, SysClassPath* scp_p, bool* scp_assembly_required_p, FlagValueOrigin origin); static jint finalize_vm_init_args(SysClassPath* scp_p, bool scp_assembly_required); static bool is_bad_option(const JavaVMOption* option, jboolean ignore, const char* option_type); static bool is_bad_option(const JavaVMOption* option, jboolean ignore) { return is_bad_option(option, ignore, NULL); } static bool verify_interval(uintx val, uintx min, uintx max, const char* name); static bool verify_min_value(intx val, intx min, const char* name); static bool verify_percentage(uintx value, const char* name); static void describe_range_error(ArgsRange errcode); static ArgsRange check_memory_size(julong size, julong min_size); static ArgsRange parse_memory_size(const char* s, julong* long_arg, julong min_size); // Parse a string for a unsigned integer. Returns true if value // is an unsigned integer greater than or equal to the minimum // parameter passed and returns the value in uintx_arg. Returns // false otherwise, with uintx_arg undefined. static bool parse_uintx(const char* value, uintx* uintx_arg, uintx min_size); // methods to build strings from individual args static void build_jvm_args(const char* arg); static void build_jvm_flags(const char* arg); static void add_string(char*** bldarray, int* count, const char* arg); static const char* build_resource_string(char** args, int count); static bool methodExists( char* className, char* methodName, int classesNum, char** classes, bool* allMethods, int methodsNum, char** methods, bool* allClasses ); static void parseOnlyLine( const char* line, short* classesNum, short* classesMax, char*** classes, bool** allMethods, short* methodsNum, short* methodsMax, char*** methods, bool** allClasses ); // Returns true if the string s is in the list of flags that have recently // been made obsolete. If we detect one of these flags on the command // line, instead of failing we print a warning message and ignore the // flag. This gives the user a release or so to stop using the flag. static bool is_newly_obsolete(const char* s, JDK_Version* buffer); static short CompileOnlyClassesNum; static short CompileOnlyClassesMax; static char** CompileOnlyClasses; static bool* CompileOnlyAllMethods; static short CompileOnlyMethodsNum; static short CompileOnlyMethodsMax; static char** CompileOnlyMethods; static bool* CompileOnlyAllClasses; static short InterpretOnlyClassesNum; static short InterpretOnlyClassesMax; static char** InterpretOnlyClasses; static bool* InterpretOnlyAllMethods; static bool CheckCompileOnly; static char* SharedArchivePath; public: // Parses the arguments static jint parse(const JavaVMInitArgs* args); // Check for consistency in the selection of the garbage collector. static bool check_gc_consistency(); // Check consistecy or otherwise of VM argument settings static bool check_vm_args_consistency(); // Check stack pages settings static bool check_stack_pages(); // Used by os_solaris static bool process_settings_file(const char* file_name, bool should_exist, jboolean ignore_unrecognized); // return a char* array containing all options static char** jvm_flags_array() { return _jvm_flags_array; } static char** jvm_args_array() { return _jvm_args_array; } static int num_jvm_flags() { return _num_jvm_flags; } static int num_jvm_args() { return _num_jvm_args; } // return the arguments passed to the Java application static const char* java_command() { return _java_command; } // print jvm_flags, jvm_args and java_command static void print_on(outputStream* st); // convenient methods to obtain / print jvm_flags and jvm_args static const char* jvm_flags() { return build_resource_string(_jvm_flags_array, _num_jvm_flags); } static const char* jvm_args() { return build_resource_string(_jvm_args_array, _num_jvm_args); } static void print_jvm_flags_on(outputStream* st); static void print_jvm_args_on(outputStream* st); // -Dkey=value flags static SystemProperty* system_properties() { return _system_properties; } static const char* get_property(const char* key); // -Djava.vendor.url.bug static const char* java_vendor_url_bug() { return _java_vendor_url_bug; } // -Dsun.java.launcher static const char* sun_java_launcher() { return _sun_java_launcher; } // Was VM created by a Java launcher? static bool created_by_java_launcher(); // -Dsun.java.launcher.pid static int sun_java_launcher_pid() { return _sun_java_launcher_pid; } // -Xloggc:, if not specified will be NULL static const char* gc_log_filename() { return _gc_log_filename; } // -Xprof/-Xaprof static bool has_profile() { return _has_profile; } static bool has_alloc_profile() { return _has_alloc_profile; } // -Xms, -Xmx static uintx min_heap_size() { return _min_heap_size; } static void set_min_heap_size(uintx v) { _min_heap_size = v; } // -Xrun static AgentLibrary* libraries() { return _libraryList.first(); } static bool init_libraries_at_startup() { return !_libraryList.is_empty(); } static void convert_library_to_agent(AgentLibrary* lib) { _libraryList.remove(lib); _agentList.add(lib); } // -agentlib -agentpath static AgentLibrary* agents() { return _agentList.first(); } static bool init_agents_at_startup() { return !_agentList.is_empty(); } // abort, exit, vfprintf hooks static abort_hook_t abort_hook() { return _abort_hook; } static exit_hook_t exit_hook() { return _exit_hook; } static vfprintf_hook_t vfprintf_hook() { return _vfprintf_hook; } static bool GetCheckCompileOnly () { return CheckCompileOnly; } static const char* GetSharedArchivePath() { return SharedArchivePath; } static bool CompileMethod(char* className, char* methodName) { return methodExists( className, methodName, CompileOnlyClassesNum, CompileOnlyClasses, CompileOnlyAllMethods, CompileOnlyMethodsNum, CompileOnlyMethods, CompileOnlyAllClasses ); } // Java launcher properties static void process_sun_java_launcher_properties(JavaVMInitArgs* args); // System properties static void init_system_properties(); // Update/Initialize System properties after JDK version number is known static void init_version_specific_system_properties(); // Property List manipulation static void PropertyList_add(SystemProperty** plist, SystemProperty *element); static void PropertyList_add(SystemProperty** plist, const char* k, char* v); static void PropertyList_unique_add(SystemProperty** plist, const char* k, char* v) { PropertyList_unique_add(plist, k, v, false); } static void PropertyList_unique_add(SystemProperty** plist, const char* k, char* v, jboolean append); static const char* PropertyList_get_value(SystemProperty* plist, const char* key); static int PropertyList_count(SystemProperty* pl); static const char* PropertyList_get_key_at(SystemProperty* pl,int index); static char* PropertyList_get_value_at(SystemProperty* pl,int index); // Miscellaneous System property value getter and setters. static void set_dll_dir(char *value) { _sun_boot_library_path->set_value(value); } static void set_java_home(char *value) { _java_home->set_value(value); } static void set_library_path(char *value) { _java_library_path->set_value(value); } static void set_ext_dirs(char *value) { _java_ext_dirs->set_value(value); } static void set_endorsed_dirs(char *value) { _java_endorsed_dirs->set_value(value); } static void set_sysclasspath(char *value) { _sun_boot_class_path->set_value(value); } static void append_sysclasspath(const char *value) { _sun_boot_class_path->append_value(value); } static void set_meta_index_path(char* meta_index_path, char* meta_index_dir) { _meta_index_path = meta_index_path; _meta_index_dir = meta_index_dir; } static char *get_java_home() { return _java_home->value(); } static char *get_dll_dir() { return _sun_boot_library_path->value(); } static char *get_endorsed_dir() { return _java_endorsed_dirs->value(); } static char *get_sysclasspath() { return _sun_boot_class_path->value(); } static char* get_meta_index_path() { return _meta_index_path; } static char* get_meta_index_dir() { return _meta_index_dir; } // Operation modi static Mode mode() { return _mode; } // Utility: copies src into buf, replacing "%%" with "%" and "%p" with pid. static bool copy_expand_pid(const char* src, size_t srclen, char* buf, size_t buflen); #ifdef KERNEL // For java kernel vm, return property string for kernel properties. static char *get_kernel_properties(); #endif // KERNEL };