Mercurial > hg > graal-compiler
view src/share/vm/classfile/symbolTable.hpp @ 731:aa92a90b1cc6
6833951: Extra ":" Causes Testcase in CR 6589834 "Parse Exception: Invalid tag: summary:"
Summary: Remove the colon
Reviewed-by: never
author | cfang |
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date | Fri, 24 Apr 2009 09:14:39 -0700 |
parents | c89f86385056 |
children | c18cbe5936b8 |
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/* * Copyright 1997-2009 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, * CA 95054 USA or visit www.sun.com if you need additional information or * have any questions. * */ // The symbol table holds all symbolOops and corresponding interned strings. // symbolOops and literal strings should be canonicalized. // // The interned strings are created lazily. // // It is implemented as an open hash table with a fixed number of buckets. // // %note: // - symbolTableEntrys are allocated in blocks to reduce the space overhead. class BoolObjectClosure; class SymbolTable : public Hashtable { friend class VMStructs; private: // The symbol table static SymbolTable* _the_table; // Adding elements symbolOop basic_add(int index, u1* name, int len, unsigned int hashValue, TRAPS); bool basic_add(constantPoolHandle cp, int names_count, const char** names, int* lengths, int* cp_indices, unsigned int* hashValues, TRAPS); // Table size enum { symbol_table_size = 20011 }; symbolOop lookup(int index, const char* name, int len, unsigned int hash); SymbolTable() : Hashtable(symbol_table_size, sizeof (HashtableEntry)) {} SymbolTable(HashtableBucket* t, int number_of_entries) : Hashtable(symbol_table_size, sizeof (HashtableEntry), t, number_of_entries) {} public: enum { symbol_alloc_batch_size = 8 }; // The symbol table static SymbolTable* the_table() { return _the_table; } static void create_table() { assert(_the_table == NULL, "One symbol table allowed."); _the_table = new SymbolTable(); } static void create_table(HashtableBucket* t, int length, int number_of_entries) { assert(_the_table == NULL, "One symbol table allowed."); assert(length == symbol_table_size * sizeof(HashtableBucket), "bad shared symbol size."); _the_table = new SymbolTable(t, number_of_entries); } static symbolOop lookup(const char* name, int len, TRAPS); // lookup only, won't add. Also calculate hash. static symbolOop lookup_only(const char* name, int len, unsigned int& hash); // Only copy to C string to be added if lookup failed. static symbolOop lookup(symbolHandle sym, int begin, int end, TRAPS); // jchar (utf16) version of lookups static symbolOop lookup_unicode(const jchar* name, int len, TRAPS); static symbolOop lookup_only_unicode(const jchar* name, int len, unsigned int& hash); static void add(constantPoolHandle cp, int names_count, const char** names, int* lengths, int* cp_indices, unsigned int* hashValues, TRAPS); // GC support // Delete pointers to otherwise-unreachable objects. static void unlink(BoolObjectClosure* cl) { the_table()->Hashtable::unlink(cl); } // Invoke "f->do_oop" on the locations of all oops in the table. static void oops_do(OopClosure* f) { the_table()->Hashtable::oops_do(f); } // Symbol lookup static symbolOop lookup(int index, const char* name, int len, TRAPS); // Needed for preloading classes in signatures when compiling. // Returns the symbol is already present in symbol table, otherwise // NULL. NO ALLOCATION IS GUARANTEED! static symbolOop probe(const char* name, int len) { unsigned int ignore_hash; return lookup_only(name, len, ignore_hash); } static symbolOop probe_unicode(const jchar* name, int len) { unsigned int ignore_hash; return lookup_only_unicode(name, len, ignore_hash); } // Histogram static void print_histogram() PRODUCT_RETURN; // Debugging static void verify(); // Sharing static void copy_buckets(char** top, char*end) { the_table()->Hashtable::copy_buckets(top, end); } static void copy_table(char** top, char*end) { the_table()->Hashtable::copy_table(top, end); } static void reverse(void* boundary = NULL) { ((Hashtable*)the_table())->reverse(boundary); } }; class StringTable : public Hashtable { friend class VMStructs; private: // The string table static StringTable* _the_table; static oop intern(Handle string_or_null, jchar* chars, int length, TRAPS); oop basic_add(int index, Handle string_or_null, jchar* name, int len, unsigned int hashValue, TRAPS); // Table size enum { string_table_size = 1009 }; oop lookup(int index, jchar* chars, int length, unsigned int hashValue); StringTable() : Hashtable(string_table_size, sizeof (HashtableEntry)) {} StringTable(HashtableBucket* t, int number_of_entries) : Hashtable(string_table_size, sizeof (HashtableEntry), t, number_of_entries) {} public: // The string table static StringTable* the_table() { return _the_table; } static void create_table() { assert(_the_table == NULL, "One string table allowed."); _the_table = new StringTable(); } static void create_table(HashtableBucket* t, int length, int number_of_entries) { assert(_the_table == NULL, "One string table allowed."); assert(length == string_table_size * sizeof(HashtableBucket), "bad shared string size."); _the_table = new StringTable(t, number_of_entries); } static int hash_string(jchar* s, int len); // GC support // Delete pointers to otherwise-unreachable objects. static void unlink(BoolObjectClosure* cl) { the_table()->Hashtable::unlink(cl); } // Invoke "f->do_oop" on the locations of all oops in the table. static void oops_do(OopClosure* f) { the_table()->Hashtable::oops_do(f); } // Probing static oop lookup(symbolOop symbol); // Interning static oop intern(symbolOop symbol, TRAPS); static oop intern(oop string, TRAPS); static oop intern(const char *utf8_string, TRAPS); // Debugging static void verify(); // Sharing static void copy_buckets(char** top, char*end) { the_table()->Hashtable::copy_buckets(top, end); } static void copy_table(char** top, char*end) { the_table()->Hashtable::copy_table(top, end); } static void reverse() { ((BasicHashtable*)the_table())->reverse(); } };