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7150058: Allocate symbols from null boot loader to an arena for NMT

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Move symbol allocation to an arena so NMT doesn't have to track them at startup.

Reviewed-by: never, kamg, zgu
This commit is contained in:
Coleen Phillimore 2012-03-23 11:16:05 -04:00
parent 2c07f4154e
commit 1431a5efd1
11 changed files with 162 additions and 126 deletions
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8
hotspot/src/share/vm/classfile/vmSymbols.cpp
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@ -1,5 +1,5 @@
/*
* Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 1997, 2012, 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
@ -79,7 +79,7 @@ void vmSymbols::initialize(TRAPS) {
if (!UseSharedSpaces) {
const char* string = &vm_symbol_bodies[0];
for (int index = (int)FIRST_SID; index < (int)SID_LIMIT; index++) {
Symbol* sym = SymbolTable::new_symbol(string, CHECK);
Symbol* sym = SymbolTable::new_permanent_symbol(string, CHECK);
_symbols[index] = sym;
string += strlen(string); // skip string body
string += 1; // skip trailing null
@ -128,7 +128,7 @@ void vmSymbols::initialize(TRAPS) {
// Spot-check correspondence between strings, symbols, and enums:
assert(_symbols[NO_SID] == NULL, "must be");
const char* str = "java/lang/Object";
TempNewSymbol jlo = SymbolTable::new_symbol(str, CHECK);
TempNewSymbol jlo = SymbolTable::new_permanent_symbol(str, CHECK);
assert(strncmp(str, (char*)jlo->base(), jlo->utf8_length()) == 0, "");
assert(jlo == java_lang_Object(), "");
SID sid = VM_SYMBOL_ENUM_NAME(java_lang_Object);
@ -147,7 +147,7 @@ void vmSymbols::initialize(TRAPS) {
// The string "format" happens (at the moment) not to be a vmSymbol,
// though it is a method name in java.lang.String.
str = "format";
TempNewSymbol fmt = SymbolTable::new_symbol(str, CHECK);
TempNewSymbol fmt = SymbolTable::new_permanent_symbol(str, CHECK);
sid = find_sid(fmt);
assert(sid == NO_SID, "symbol index works (negative test)");
}