jdk8-mips64-public/hotspot: src/share/vm/compiler/compilerOracle.cpp@c18cbe5936b8 (annotated)

src/share/vm/compiler/compilerOracle.cpp@c18cbe5936b8 (annotated)

src/share/vm/compiler/compilerOracle.cpp

Thu, 27 May 2010 19:08:38 -0700

author: trims
date: Thu, 27 May 2010 19:08:38 -0700
changeset 1907: c18cbe5936b8
parent 1590: 4e6abf09f540
child 2314: f95d63e2154a
permissions: -rw-r--r--

6941466: Oracle rebranding changes for Hotspot repositories
Summary: Change all the Sun copyrights to Oracle copyright
Reviewed-by: ohair

 /*
  * Copyright (c) 1998, 2007, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License version 2 only, as
  * published by the Free Software Foundation.
  *
  * This code is distributed in the hope that it will be useful, but WITHOUT
  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  * version 2 for more details (a copy is included in the LICENSE file that
  * accompanied this code).
  *
  * You should have received a copy of the GNU General Public License version
  * 2 along with this work; if not, write to the Free Software Foundation,
  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  *
  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  * or visit www.oracle.com if you need additional information or have any
  * questions.
  *
  */
 #include "incls/_precompiled.incl"
 #include "incls/_compilerOracle.cpp.incl"
 class MethodMatcher : public CHeapObj {
  public:
   enum Mode {
     Exact,
     Prefix = 1,
     Suffix = 2,
     Substring = Prefix | Suffix,
     Any,
     Unknown = -1
   };
  protected:
   jobject        _class_name;
   Mode           _class_mode;
   jobject        _method_name;
   Mode           _method_mode;
   jobject        _signature;
   MethodMatcher* _next;
   static bool match(symbolHandle candidate, symbolHandle match, Mode match_mode);
   symbolHandle class_name() const { return (symbolOop)JNIHandles::resolve_non_null(_class_name); }
   symbolHandle method_name() const { return (symbolOop)JNIHandles::resolve_non_null(_method_name); }
   symbolHandle signature() const { return (symbolOop)JNIHandles::resolve(_signature); }
  public:
   MethodMatcher(symbolHandle class_name, Mode class_mode,
                 symbolHandle method_name, Mode method_mode,
                 symbolHandle signature, MethodMatcher* next);
   MethodMatcher(symbolHandle class_name, symbolHandle method_name, MethodMatcher* next);
   // utility method
   MethodMatcher* find(methodHandle method) {
     symbolHandle class_name  = Klass::cast(method->method_holder())->name();
     symbolHandle method_name = method->name();
     for (MethodMatcher* current = this; current != NULL; current = current->_next) {
       if (match(class_name, current->class_name(), current->_class_mode) &&
           match(method_name, current->method_name(), current->_method_mode) &&
           (current->signature().is_null() || current->signature()() == method->signature())) {
         return current;
       }
     }
     return NULL;
   }
   bool match(methodHandle method) {
     return find(method) != NULL;
   }
   MethodMatcher* next() const { return _next; }
   static void print_symbol(symbolHandle h, Mode mode) {
     ResourceMark rm;
     if (mode == Suffix || mode == Substring || mode == Any) {
       tty->print("*");
     }
     if (mode != Any) {
       h()->print_symbol_on(tty);
     }
     if (mode == Prefix || mode == Substring) {
       tty->print("*");
     }
   }
   void print_base() {
     print_symbol(class_name(), _class_mode);
     tty->print(".");
     print_symbol(method_name(), _method_mode);
     if (!signature().is_null()) {
       tty->print(" ");
       signature()->print_symbol_on(tty);
     }
   }
   virtual void print() {
     print_base();
     tty->cr();
   }
 };
 MethodMatcher::MethodMatcher(symbolHandle class_name, symbolHandle method_name, MethodMatcher* next) {
   _class_name  = JNIHandles::make_global(class_name);
   _method_name = JNIHandles::make_global(method_name);
   _next        = next;
   _class_mode  = MethodMatcher::Exact;
   _method_mode = MethodMatcher::Exact;
   _signature   = NULL;
 }
 MethodMatcher::MethodMatcher(symbolHandle class_name, Mode class_mode,
                              symbolHandle method_name, Mode method_mode,
                              symbolHandle signature, MethodMatcher* next):
     _class_mode(class_mode)
   , _method_mode(method_mode)
   , _next(next)
   , _class_name(JNIHandles::make_global(class_name()))
   , _method_name(JNIHandles::make_global(method_name()))
   , _signature(JNIHandles::make_global(signature())) {
 }
 bool MethodMatcher::match(symbolHandle candidate, symbolHandle match, Mode match_mode) {
   if (match_mode == Any) {
     return true;
   }
   if (match_mode == Exact) {
     return candidate() == match();
   }
   ResourceMark rm;
   const char * candidate_string = candidate->as_C_string();
   const char * match_string = match->as_C_string();
   switch (match_mode) {
   case Prefix:
     return strstr(candidate_string, match_string) == candidate_string;
   case Suffix: {
     size_t clen = strlen(candidate_string);
     size_t mlen = strlen(match_string);
     return clen >= mlen && strcmp(candidate_string + clen - mlen, match_string) == 0;
   }
   case Substring:
     return strstr(candidate_string, match_string) != NULL;
   default:
     return false;
   }
 }
 class MethodOptionMatcher: public MethodMatcher {
   const char * option;
  public:
   MethodOptionMatcher(symbolHandle class_name, Mode class_mode,
                              symbolHandle method_name, Mode method_mode,
                              symbolHandle signature, const char * opt, MethodMatcher* next):
     MethodMatcher(class_name, class_mode, method_name, method_mode, signature, next) {
     option = opt;
   }
   bool match(methodHandle method, const char* opt) {
     MethodOptionMatcher* current = this;
     while (current != NULL) {
       current = (MethodOptionMatcher*)current->find(method);
       if (current == NULL) {
         return false;
       }
       if (strcmp(current->option, opt) == 0) {
         return true;
       }
       current = current->next();
     }
     return false;
   }
   MethodOptionMatcher* next() {
     return (MethodOptionMatcher*)_next;
   }
   virtual void print() {
     print_base();
     tty->print(" %s", option);
     tty->cr();
   }
 };
 // this must parallel the command_names below
 enum OracleCommand {
   UnknownCommand = -1,
   OracleFirstCommand = 0,
   BreakCommand = OracleFirstCommand,
   PrintCommand,
   ExcludeCommand,
   InlineCommand,
   DontInlineCommand,
   CompileOnlyCommand,
   LogCommand,
   OptionCommand,
   QuietCommand,
   HelpCommand,
   OracleCommandCount
 };
 // this must parallel the enum OracleCommand
 static const char * command_names[] = {
   "break",
   "print",
   "exclude",
   "inline",
   "dontinline",
   "compileonly",
   "log",
   "option",
   "quiet",
   "help"
 };
 static const char * command_name(OracleCommand command) {
   if (command < OracleFirstCommand || command >= OracleCommandCount) {
     return "unknown command";
   }
   return command_names[command];
 }
 class MethodMatcher;
 static MethodMatcher* lists[OracleCommandCount] = { 0, };
 static bool check_predicate(OracleCommand command, methodHandle method) {
   return ((lists[command] != NULL) &&
           !method.is_null() &&
           lists[command]->match(method));
 }
 static MethodMatcher* add_predicate(OracleCommand command,
                                     symbolHandle class_name, MethodMatcher::Mode c_mode,
                                     symbolHandle method_name, MethodMatcher::Mode m_mode,
                                     symbolHandle signature) {
   assert(command != OptionCommand, "must use add_option_string");
   if (command == LogCommand && !LogCompilation && lists[LogCommand] == NULL)
     tty->print_cr("Warning:  +LogCompilation must be enabled in order for individual methods to be logged.");
   lists[command] = new MethodMatcher(class_name, c_mode, method_name, m_mode, signature, lists[command]);
   return lists[command];
 }
 static MethodMatcher* add_option_string(symbolHandle class_name, MethodMatcher::Mode c_mode,
                                         symbolHandle method_name, MethodMatcher::Mode m_mode,
                                         symbolHandle signature,
                                         const char* option) {
   lists[OptionCommand] = new MethodOptionMatcher(class_name, c_mode, method_name, m_mode,
                                                  signature, option, lists[OptionCommand]);
   return lists[OptionCommand];
 }
 bool CompilerOracle::has_option_string(methodHandle method, const char* option) {
   return lists[OptionCommand] != NULL &&
     ((MethodOptionMatcher*)lists[OptionCommand])->match(method, option);
 }
 bool CompilerOracle::should_exclude(methodHandle method, bool& quietly) {
   quietly = true;
   if (lists[ExcludeCommand] != NULL) {
     if (lists[ExcludeCommand]->match(method)) {
       quietly = _quiet;
       return true;
     }
   }
   if (lists[CompileOnlyCommand] != NULL) {
     return !lists[CompileOnlyCommand]->match(method);
   }
   return false;
 }
 bool CompilerOracle::should_inline(methodHandle method) {
   return (check_predicate(InlineCommand, method));
 }
 bool CompilerOracle::should_not_inline(methodHandle method) {
   return (check_predicate(DontInlineCommand, method));
 }
 bool CompilerOracle::should_print(methodHandle method) {
   return (check_predicate(PrintCommand, method));
 }
 bool CompilerOracle::should_log(methodHandle method) {
   if (!LogCompilation)            return false;
   if (lists[LogCommand] == NULL)  return true;  // by default, log all
   return (check_predicate(LogCommand, method));
 }
 bool CompilerOracle::should_break_at(methodHandle method) {
   return check_predicate(BreakCommand, method);
 }
 static OracleCommand parse_command_name(const char * line, int* bytes_read) {
   assert(ARRAY_SIZE(command_names) == OracleCommandCount,
          "command_names size mismatch");
   *bytes_read = 0;
   char command[32];
   int result = sscanf(line, "%32[a-z]%n", command, bytes_read);
   for (uint i = 0; i < ARRAY_SIZE(command_names); i++) {
     if (strcmp(command, command_names[i]) == 0) {
       return (OracleCommand)i;
     }
   }
   return UnknownCommand;
 }
 static void usage() {
   tty->print_cr("  CompileCommand and the CompilerOracle allows simple control over");
   tty->print_cr("  what's allowed to be compiled.  The standard supported directives");
   tty->print_cr("  are exclude and compileonly.  The exclude directive stops a method");
   tty->print_cr("  from being compiled and compileonly excludes all methods except for");
   tty->print_cr("  the ones mentioned by compileonly directives.  The basic form of");
   tty->print_cr("  all commands is a command name followed by the name of the method");
   tty->print_cr("  in one of two forms: the standard class file format as in");
   tty->print_cr("  class/name.methodName or the PrintCompilation format");
   tty->print_cr("  class.name::methodName.  The method name can optionally be followed");
   tty->print_cr("  by a space then the signature of the method in the class file");
   tty->print_cr("  format.  Otherwise the directive applies to all methods with the");
   tty->print_cr("  same name and class regardless of signature.  Leading and trailing");
   tty->print_cr("  *'s in the class and/or method name allows a small amount of");
   tty->print_cr("  wildcarding.  ");
   tty->cr();
   tty->print_cr("  Examples:");
   tty->cr();
   tty->print_cr("  exclude java/lang/StringBuffer.append");
   tty->print_cr("  compileonly java/lang/StringBuffer.toString ()Ljava/lang/String;");
   tty->print_cr("  exclude java/lang/String*.*");
   tty->print_cr("  exclude *.toString");
 }
 // The characters allowed in a class or method name.  All characters > 0x7f
 // are allowed in order to handle obfuscated class files (e.g. Volano)
 #define RANGEBASE "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789$_<>" \
         "\x80\x81\x82\x83\x84\x85\x86\x87\x88\x89\x8a\x8b\x8c\x8d\x8e\x8f" \
         "\x90\x91\x92\x93\x94\x95\x96\x97\x98\x99\x9a\x9b\x9c\x9d\x9e\x9f" \
         "\xa0\xa1\xa2\xa3\xa4\xa5\xa6\xa7\xa8\xa9\xaa\xab\xac\xad\xae\xaf" \
         "\xb0\xb1\xb2\xb3\xb4\xb5\xb6\xb7\xb8\xb9\xba\xbb\xbc\xbd\xbe\xbf" \
         "\xc0\xc1\xc2\xc3\xc4\xc5\xc6\xc7\xc8\xc9\xca\xcb\xcc\xcd\xce\xcf" \
         "\xd0\xd1\xd2\xd3\xd4\xd5\xd6\xd7\xd8\xd9\xda\xdb\xdc\xdd\xde\xdf" \
         "\xe0\xe1\xe2\xe3\xe4\xe5\xe6\xe7\xe8\xe9\xea\xeb\xec\xed\xee\xef" \
         "\xf0\xf1\xf2\xf3\xf4\xf5\xf6\xf7\xf8\xf9\xfa\xfb\xfc\xfd\xfe\xff"
 #define RANGE0 "[*" RANGEBASE "]"
 #define RANGEDOT "[*" RANGEBASE ".]"
 #define RANGESLASH "[*" RANGEBASE "/]"
 // Accept several syntaxes for these patterns
 //  original syntax
 //   cmd  java.lang.String foo
 //  PrintCompilation syntax
 //   cmd  java.lang.String::foo
 //  VM syntax
 //   cmd  java/lang/String[. ]foo
 //
 static const char* patterns[] = {
   "%*[ \t]%255" RANGEDOT    " "     "%255"  RANGE0 "%n",
   "%*[ \t]%255" RANGEDOT   "::"     "%255"  RANGE0 "%n",
   "%*[ \t]%255" RANGESLASH "%*[ .]" "%255"  RANGE0 "%n",
 };
 static MethodMatcher::Mode check_mode(char name[], const char*& error_msg) {
   int match = MethodMatcher::Exact;
   while (name[0] == '*') {
     match |= MethodMatcher::Suffix;
     strcpy(name, name + 1);
   }
   if (strcmp(name, "*") == 0) return MethodMatcher::Any;
   size_t len = strlen(name);
   while (len > 0 && name[len - 1] == '*') {
     match |= MethodMatcher::Prefix;
     name[--len] = '\0';
   }
   if (strstr(name, "*") != NULL) {
     error_msg = "  Embedded * not allowed";
     return MethodMatcher::Unknown;
   }
   return (MethodMatcher::Mode)match;
 }
 static bool scan_line(const char * line,
                       char class_name[],  MethodMatcher::Mode* c_mode,
                       char method_name[], MethodMatcher::Mode* m_mode,
                       int* bytes_read, const char*& error_msg) {
   *bytes_read = 0;
   error_msg = NULL;
   for (uint i = 0; i < ARRAY_SIZE(patterns); i++) {
     if (2 == sscanf(line, patterns[i], class_name, method_name, bytes_read)) {
       *c_mode = check_mode(class_name, error_msg);
       *m_mode = check_mode(method_name, error_msg);
       return *c_mode != MethodMatcher::Unknown && *m_mode != MethodMatcher::Unknown;
     }
   }
   return false;
 }
 void CompilerOracle::parse_from_line(char* line) {
   if (line[0] == '\0') return;
   if (line[0] == '#')  return;
   bool have_colon = (strstr(line, "::") != NULL);
   for (char* lp = line; *lp != '\0'; lp++) {
     // Allow '.' to separate the class name from the method name.
     // This is the preferred spelling of methods:
     //      exclude java/lang/String.indexOf(I)I
     // Allow ',' for spaces (eases command line quoting).
     //      exclude,java/lang/String.indexOf
     // For backward compatibility, allow space as separator also.
     //      exclude java/lang/String indexOf
     //      exclude,java/lang/String,indexOf
     // For easy cut-and-paste of method names, allow VM output format
     // as produced by methodOopDesc::print_short_name:
     //      exclude java.lang.String::indexOf
     // For simple implementation convenience here, convert them all to space.
     if (have_colon) {
       if (*lp == '.')  *lp = '/';   // dots build the package prefix
       if (*lp == ':')  *lp = ' ';
     }
     if (*lp == ',' || *lp == '.')  *lp = ' ';
   }
   char* original_line = line;
   int bytes_read;
   OracleCommand command = parse_command_name(line, &bytes_read);
   line += bytes_read;
   if (command == QuietCommand) {
     _quiet = true;
     return;
   }
   if (command == HelpCommand) {
     usage();
     return;
   }
   MethodMatcher::Mode c_match = MethodMatcher::Exact;
   MethodMatcher::Mode m_match = MethodMatcher::Exact;
   char class_name[256];
   char method_name[256];
   char sig[1024];
   char errorbuf[1024];
   const char* error_msg = NULL;
   MethodMatcher* match = NULL;
   if (scan_line(line, class_name, &c_match, method_name, &m_match, &bytes_read, error_msg)) {
     EXCEPTION_MARK;
     symbolHandle c_name = oopFactory::new_symbol_handle(class_name, CHECK);
     symbolHandle m_name = oopFactory::new_symbol_handle(method_name, CHECK);
     symbolHandle signature;
     line += bytes_read;
     // there might be a signature following the method.
     // signatures always begin with ( so match that by hand
     if (1 == sscanf(line, "%*[ \t](%254[);/" RANGEBASE "]%n", sig + 1, &bytes_read)) {
       sig[0] = '(';
       line += bytes_read;
       signature = oopFactory::new_symbol_handle(sig, CHECK);
     }
     if (command == OptionCommand) {
       // Look for trailing options to support
       // ciMethod::has_option("string") to control features in the
       // compiler.  Multiple options may follow the method name.
       char option[256];
       while (sscanf(line, "%*[ \t]%255[a-zA-Z0-9]%n", option, &bytes_read) == 1) {
         if (match != NULL && !_quiet) {
           // Print out the last match added
           tty->print("CompilerOracle: %s ", command_names[command]);
           match->print();
         }
         match = add_option_string(c_name, c_match, m_name, m_match, signature, strdup(option));
         line += bytes_read;
       }
     } else {
       bytes_read = 0;
       sscanf(line, "%*[ \t]%n", &bytes_read);
       if (line[bytes_read] != '\0') {
         jio_snprintf(errorbuf, sizeof(errorbuf), "  Unrecognized text after command: %s", line);
         error_msg = errorbuf;
       } else {
         match = add_predicate(command, c_name, c_match, m_name, m_match, signature);
       }
     }
   }
   if (match != NULL) {
     if (!_quiet) {
       tty->print("CompilerOracle: %s ", command_names[command]);
       match->print();
     }
   } else {
     tty->print_cr("CompilerOracle: unrecognized line");
     tty->print_cr("  \"%s\"", original_line);
     if (error_msg != NULL) {
       tty->print_cr(error_msg);
     }
   }
 }
 static const char* cc_file() {
   if (CompileCommandFile == NULL)
     return ".hotspot_compiler";
   return CompileCommandFile;
 }
 bool CompilerOracle::_quiet = false;
 void CompilerOracle::parse_from_file() {
   FILE* stream = fopen(cc_file(), "rt");
   if (stream == NULL) return;
   char token[1024];
   int  pos = 0;
   int  c = getc(stream);
   while(c != EOF) {
     if (c == '\n') {
       token[pos++] = '\0';
       parse_from_line(token);
       pos = 0;
     } else {
       token[pos++] = c;
     }
     c = getc(stream);
   }
   token[pos++] = '\0';
   parse_from_line(token);
   fclose(stream);
 }
 void CompilerOracle::parse_from_string(const char* str, void (*parse_line)(char*)) {
   char token[1024];
   int  pos = 0;
   const char* sp = str;
   int  c = *sp++;
   while (c != '\0') {
     if (c == '\n') {
       token[pos++] = '\0';
       parse_line(token);
       pos = 0;
     } else {
       token[pos++] = c;
     }
     c = *sp++;
   }
   token[pos++] = '\0';
   parse_line(token);
 }
 void CompilerOracle::append_comment_to_file(const char* message) {
   fileStream stream(fopen(cc_file(), "at"));
   stream.print("# ");
   for (int index = 0; message[index] != '\0'; index++) {
     stream.put(message[index]);
     if (message[index] == '\n') stream.print("# ");
   }
   stream.cr();
 }
 void CompilerOracle::append_exclude_to_file(methodHandle method) {
   fileStream stream(fopen(cc_file(), "at"));
   stream.print("exclude ");
   Klass::cast(method->method_holder())->name()->print_symbol_on(&stream);
   stream.print(".");
   method->name()->print_symbol_on(&stream);
   method->signature()->print_symbol_on(&stream);
   stream.cr();
   stream.cr();
 }
 void compilerOracle_init() {
   CompilerOracle::parse_from_string(CompileCommand, CompilerOracle::parse_from_line);
   CompilerOracle::parse_from_string(CompileOnly, CompilerOracle::parse_compile_only);
   CompilerOracle::parse_from_file();
   if (lists[PrintCommand] != NULL) {
     if (PrintAssembly) {
       warning("CompileCommand and/or .hotspot_compiler file contains 'print' commands, but PrintAssembly is also enabled");
     } else if (FLAG_IS_DEFAULT(DebugNonSafepoints)) {
       warning("printing of assembly code is enabled; turning on DebugNonSafepoints to gain additional output");
       DebugNonSafepoints = true;
     }
   }
 }
 void CompilerOracle::parse_compile_only(char * line) {
   int i;
   char name[1024];
   const char* className = NULL;
   const char* methodName = NULL;
   bool have_colon = (strstr(line, "::") != NULL);
   char method_sep = have_colon ? ':' : '.';
   if (Verbose) {
     tty->print_cr(line);
   }
   ResourceMark rm;
   while (*line != '\0') {
     MethodMatcher::Mode c_match = MethodMatcher::Exact;
     MethodMatcher::Mode m_match = MethodMatcher::Exact;
     for (i = 0;
          i < 1024 && *line != '\0' && *line != method_sep && *line != ',' && !isspace(*line);
          line++, i++) {
       name[i] = *line;
       if (name[i] == '.')  name[i] = '/';  // package prefix uses '/'
     }
     if (i > 0) {
       char* newName = NEW_RESOURCE_ARRAY( char, i + 1);
       if (newName == NULL)
         return;
       strncpy(newName, name, i);
       newName[i] = '\0';
       if (className == NULL) {
         className = newName;
         c_match = MethodMatcher::Prefix;
       } else {
         methodName = newName;
       }
     }
     if (*line == method_sep) {
       if (className == NULL) {
         className = "";
         c_match = MethodMatcher::Any;
       } else {
         // foo/bar.blah is an exact match on foo/bar, bar.blah is a suffix match on bar
         if (strchr(className, '/') != NULL) {
           c_match = MethodMatcher::Exact;
         } else {
           c_match = MethodMatcher::Suffix;
         }
       }
     } else {
       // got foo or foo/bar
       if (className == NULL) {
         ShouldNotReachHere();
       } else {
         // got foo or foo/bar
         if (strchr(className, '/') != NULL) {
           c_match = MethodMatcher::Prefix;
         } else if (className[0] == '\0') {
           c_match = MethodMatcher::Any;
         } else {
           c_match = MethodMatcher::Substring;
         }
       }
     }
     // each directive is terminated by , or NUL or . followed by NUL
     if (*line == ',' || *line == '\0' || (line[0] == '.' && line[1] == '\0')) {
       if (methodName == NULL) {
         methodName = "";
         if (*line != method_sep) {
           m_match = MethodMatcher::Any;
         }
       }
       EXCEPTION_MARK;
       symbolHandle c_name = oopFactory::new_symbol_handle(className, CHECK);
       symbolHandle m_name = oopFactory::new_symbol_handle(methodName, CHECK);
       symbolHandle signature;
       add_predicate(CompileOnlyCommand, c_name, c_match, m_name, m_match, signature);
       if (PrintVMOptions) {
         tty->print("CompileOnly: compileonly ");
         lists[CompileOnlyCommand]->print();
       }
       className = NULL;
       methodName = NULL;
     }
     line = *line == '\0' ? line : line + 1;
   }
 }

Mercurial > jdk8-mips64-public > hotspot / annotate

src/share/vm/compiler/compilerOracle.cpp@c18cbe5936b8 (annotated)

src/share/vm/compiler/compilerOracle.cpp