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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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9
hotspot/src/share/vm/memory/dump.cpp
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@ -1,5 +1,5 @@
/*
* Copyright (c) 2003, 2011, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2003, 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
@ -1490,12 +1490,11 @@ void GenCollectedHeap::preload_and_dump(TRAPS) {
// sun.io.Converters
static const char obj_array_sig[] = "[[Ljava/lang/Object;";
SymbolTable::lookup(obj_array_sig, (int)strlen(obj_array_sig), THREAD);
(void)SymbolTable::new_permanent_symbol(obj_array_sig, THREAD);
// java.util.HashMap
static const char map_entry_array_sig[] = "[Ljava/util/Map$Entry;";
SymbolTable::lookup(map_entry_array_sig, (int)strlen(map_entry_array_sig),
THREAD);
(void)SymbolTable::new_permanent_symbol(map_entry_array_sig, THREAD);
tty->print("Loading classes to share ... ");
while ((fgets(class_name, sizeof class_name, file)) != NULL) {
@ -1514,7 +1513,7 @@ void GenCollectedHeap::preload_and_dump(TRAPS) {
computed_jsum = jsum(computed_jsum, class_name, (const int)name_len - 1);
// Got a class name - load it.
TempNewSymbol class_name_symbol = SymbolTable::new_symbol(class_name, THREAD);
Symbol* class_name_symbol = SymbolTable::new_permanent_symbol(class_name, THREAD);
guarantee(!HAS_PENDING_EXCEPTION, "Exception creating a symbol.");
klassOop klass = SystemDictionary::resolve_or_null(class_name_symbol,
THREAD);