/* * Copyright (c) 2020, 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.
*/
JavaThread* THREAD = JavaThread::current(); // the thread should be in vm to use locks
ThreadInVMfromNative ThreadInVMfromNative(THREAD); // SignatureStream::as_symbol will allocate on the resource area
ResourceMark rm(THREAD);
Symbol* foo = SymbolTable::new_symbol("Foo"); int r1 = foo->refcount();
{ // Trivial test: non-method signature of a non-permanent symbol
Symbol* methodSig = SymbolTable::new_symbol("LFoo;");
SignatureStream ss(methodSig, false);
Symbol* sym = ss.as_symbol();
ASSERT_EQ(sym, foo) << "found symbol should be Foo: " << sym->as_C_string(); // This should mean the SS looks up and increments refcount to Foo
ASSERT_EQ(foo->refcount(), r1 + 1) << "refcount should be incremented";
ASSERT_TRUE(!ss.is_done())
<< "stream parsing should not be marked as done until"
<<" ss.next() called after the last symbol";
ss.next();
ASSERT_TRUE(ss.is_done()) << "stream parsing should be marked as done";
}
ASSERT_EQ(foo->refcount(), r1) << "refcount should have decremented";
{ // Ensure refcount is properly decremented when first symbol is non-permanent and second isn't
Symbol* integer = SymbolTable::new_symbol("java/lang/Integer");
ASSERT_TRUE(integer->is_permanent()) << "java/lang/Integer must be permanent";
Symbol* methodSig = SymbolTable::new_symbol("(LFoo;)Ljava/lang/Integer;");
SignatureStream ss(methodSig);
Symbol* sym = ss.as_symbol();
ASSERT_EQ(sym, foo) << "found symbol should be Foo: " << sym->as_C_string(); // This should mean the SS looks up and increments refcount to Foo
ASSERT_EQ(foo->refcount(), r1 + 1) << "refcount should be incremented";
ss.next();
sym = ss.as_symbol();
ASSERT_EQ(sym, integer) << "found symbol should be java/lang/Integer";
ASSERT_TRUE(!ss.is_done())
<< "stream parsing should not be marked as done until"
<<" ss.next() called after the last symbol";
ss.next();
ASSERT_TRUE(ss.is_done()) << "stream parsing should be marked as done";
}
ASSERT_EQ(foo->refcount(), r1) << "refcount should have decremented";
}
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