jdk8-mips64-public/hotspot: src/share/vm/runtime/arguments.hpp@2a33b32dd03c (annotated)

src/share/vm/runtime/arguments.hpp@2a33b32dd03c (annotated)

src/share/vm/runtime/arguments.hpp

Thu, 24 May 2018 19:24:53 +0800

author: aoqi
date: Thu, 24 May 2018 19:24:53 +0800
changeset 8861: 2a33b32dd03c
parent 7994: 04ff2f6cd0eb
child 9448: 73d689add964
permissions: -rw-r--r--

#7046 Disable the compilation when branch offset is beyond short branch
Contributed-by: fujie, aoqi

 /*
  * Copyright (c) 1997, 2014, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License version 2 only, as
  * published by the Free Software Foundation.
  *
  * This code is distributed in the hope that it will be useful, but WITHOUT
  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  * version 2 for more details (a copy is included in the LICENSE file that
  * accompanied this code).
  *
  * You should have received a copy of the GNU General Public License version
  * 2 along with this work; if not, write to the Free Software Foundation,
  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  *
  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  * or visit www.oracle.com if you need additional information or have any
  * questions.
  *
  */
 #ifndef SHARE_VM_RUNTIME_ARGUMENTS_HPP
 #define SHARE_VM_RUNTIME_ARGUMENTS_HPP
 #include "runtime/java.hpp"
 #include "runtime/perfData.hpp"
 #include "utilities/debug.hpp"
 #include "utilities/top.hpp"
 // 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)  ATTRIBUTE_PRINTF(2, 0);
 }
 // Forward declarations
 class SysClassPath;
 // Element describing System and User (-Dkey=value flags) defined property.
 class SystemProperty: public CHeapObj<mtInternal> {
  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, mtInternal);
       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, mtInternal);
       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, mtInternal);
       strcpy(_key, key);
     }
     if (value == NULL) {
       _value = NULL;
     } else {
       _value = AllocateHeap(strlen(value)+1, mtInternal);
       strcpy(_value, value);
     }
     _next = NULL;
     _writeable = writeable;
   }
 };
 // For use by -agentlib, -agentpath and -Xrun
 class AgentLibrary : public CHeapObj<mtInternal> {
   friend class AgentLibraryList;
 public:
   // Is this library valid or not. Don't rely on os_lib == NULL as statically
   // linked lib could have handle of RTLD_DEFAULT which == 0 on some platforms
   enum AgentState {
     agent_invalid = 0,
     agent_valid   = 1
   };
  private:
   char*           _name;
   char*           _options;
   void*           _os_lib;
   bool            _is_absolute_path;
   bool            _is_static_lib;
   AgentState      _state;
   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; }
   bool is_static_lib() const                { return _is_static_lib; }
   void set_static_lib(bool is_static_lib)   { _is_static_lib = is_static_lib; }
   bool valid()                              { return (_state == agent_valid); }
   void set_valid()                          { _state = agent_valid; }
   void set_invalid()                        { _state = agent_invalid; }
   // Constructor
   AgentLibrary(const char* name, const char* options, bool is_absolute_path, void* os_lib) {
     _name = AllocateHeap(strlen(name)+1, mtInternal);
     strcpy(_name, name);
     if (options == NULL) {
       _options = NULL;
     } else {
       _options = AllocateHeap(strlen(options)+1, mtInternal);
       strcpy(_options, options);
     }
     _is_absolute_path = is_absolute_path;
     _os_lib = os_lib;
     _next = NULL;
     _state = agent_invalid;
     _is_static_lib = false;
   }
 };
 // 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;
   // was this VM created by the gamma launcher
   static bool   _created_by_gamma_launcher;
   // Option flags
   static bool   _has_profile;
   static const char*  _gc_log_filename;
   // Value of the conservative maximum heap alignment needed
   static size_t  _conservative_max_heap_alignment;
   static uintx _min_heap_size;
   // Used to store original flag values
   static uintx _min_heap_free_ratio;
   static uintx _max_heap_free_ratio;
   // -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(AgentLibrary *agentLib)
     { _agentList.add(agentLib); }
   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();
   static int  get_min_number_of_compiler_threads();
   // 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_conservative_max_heap_alignment();
   static void set_use_compressed_oops();
   static void set_use_compressed_klass_ptrs();
   static void select_gc();
   static void set_ergonomics_flags();
   static void set_shared_spaces_flags();
   // limits the given memory size by the maximum amount of memory this process is
   // currently allowed to allocate or reserve.
   static julong limit_by_allocatable_memory(julong size);
   // 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, Flag::Flags origin);
   static bool process_argument(const char* arg, jboolean ignore_unrecognized, Flag::Flags 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, Flag::Flags 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 is_percentage(uintx val) {
     return val <= 100;
   }
   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, first phase
   static jint parse(const JavaVMInitArgs* args);
   // Apply ergonomics
   static jint apply_ergo();
   // Adjusts the arguments after the OS have adjusted the arguments
   static jint adjust_after_os();
   static void set_gc_specific_flags();
   static inline bool gc_selected(); // whether a gc has been selected
   static void select_gc_ergonomically();
   // Verifies that the given value will fit as a MinHeapFreeRatio. If not, an error
   // message is returned in the provided buffer.
   static bool verify_MinHeapFreeRatio(FormatBuffer<80>& err_msg, uintx min_heap_free_ratio);
   // Verifies that the given value will fit as a MaxHeapFreeRatio. If not, an error
   // message is returned in the provided buffer.
   static bool verify_MaxHeapFreeRatio(FormatBuffer<80>& err_msg, uintx max_heap_free_ratio);
   // Check for consistency in the selection of the garbage collector.
   static bool check_gc_consistency();        // Check user-selected gc
   static void check_deprecated_gcs();
   static void check_deprecated_gc_flags();
   // 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);
   static size_t conservative_max_heap_alignment() { return _conservative_max_heap_alignment; }
   // Return the maximum size a heap with compressed oops can take
   static size_t max_heap_for_compressed_oops();
   // 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();
   // Was VM created by the gamma Java launcher?
   static bool created_by_gamma_launcher();
   // -Dsun.java.launcher.pid
   static int sun_java_launcher_pid()        { return _sun_java_launcher_pid; }
   // -Xloggc:<file>, if not specified will be NULL
   static const char* gc_log_filename()      { return _gc_log_filename; }
   // -Xprof
   static bool has_profile()                 { return _has_profile; }
   // -Xms, -Xmx
   static uintx min_heap_size()              { return _min_heap_size; }
   static void  set_min_heap_size(uintx v)   { _min_heap_size = v;  }
   // Returns the original values of -XX:MinHeapFreeRatio and -XX:MaxHeapFreeRatio
   static uintx min_heap_free_ratio()        { return _min_heap_free_ratio; }
   static uintx max_heap_free_ratio()        { return _max_heap_free_ratio; }
   // -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;  }
   static char* get_ext_dirs() { return _java_ext_dirs->value(); }
   static char* get_appclasspath() { return _java_class_path->value(); }
   static void  fix_appclasspath();
   // Operation modi
   static Mode mode()                { return _mode; }
   static bool is_interpreter_only() { return mode() == _int; }
   // 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);
 };
 bool Arguments::gc_selected() {
   return UseConcMarkSweepGC || UseG1GC || UseParallelGC || UseParallelOldGC ||
     UseParNewGC || UseSerialGC;
 }
 #endif // SHARE_VM_RUNTIME_ARGUMENTS_HPP

Mercurial > jdk8-mips64-public > hotspot / annotate

src/share/vm/runtime/arguments.hpp@2a33b32dd03c (annotated)

src/share/vm/runtime/arguments.hpp