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PojavLauncherTeam
GitHub Repository: PojavLauncherTeam/mobile
 Path: blob/master/test/hotspot/gtest/runtime/test_signatureStream.cpp
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/*

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 * Copyright (c) 2020, Oracle and/or its affiliates. All rights reserved.

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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

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 *

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 * This code is free software; you can redistribute it and/or modify it

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 * under the terms of the GNU General Public License version 2 only, as

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 * published by the Free Software Foundation.

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 *

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 * This code is distributed in the hope that it will be useful, but WITHOUT

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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

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 * version 2 for more details (a copy is included in the LICENSE file that

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 * accompanied this code).

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 *

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 * You should have received a copy of the GNU General Public License version

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 * 2 along with this work; if not, write to the Free Software Foundation,

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 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

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 *

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 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

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 * or visit www.oracle.com if you need additional information or have any

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 * questions.

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 */

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#include "precompiled.hpp"

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#include "classfile/symbolTable.hpp"

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#include "memory/resourceArea.hpp"

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#include "runtime/interfaceSupport.inline.hpp"

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#include "runtime/signature.hpp"

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#include "threadHelper.inline.hpp"

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#include "unittest.hpp"

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TEST_VM(SignatureStream, check_refcount) {

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  JavaThread* THREAD = JavaThread::current();

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  // the thread should be in vm to use locks

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  ThreadInVMfromNative ThreadInVMfromNative(THREAD);

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  // SignatureStream::as_symbol will allocate on the resource area

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  ResourceMark rm(THREAD);

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  Symbol* foo = SymbolTable::new_symbol("Foo");

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  int r1 = foo->refcount();

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  {

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    // Trivial test: non-method signature of a non-permanent symbol

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    Symbol* methodSig = SymbolTable::new_symbol("LFoo;");

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    SignatureStream ss(methodSig, false);

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    Symbol* sym = ss.as_symbol();

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    ASSERT_EQ(sym, foo) << "found symbol should be Foo: " << sym->as_C_string();

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    // This should mean the SS looks up and increments refcount to Foo

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    ASSERT_EQ(foo->refcount(), r1 + 1) << "refcount should be incremented";

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    ASSERT_TRUE(!ss.is_done())

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      << "stream parsing should not be marked as done until"

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      <<" ss.next() called after the last symbol";

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    ss.next();

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    ASSERT_TRUE(ss.is_done()) << "stream parsing should be marked as done";

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  }

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  ASSERT_EQ(foo->refcount(), r1) << "refcount should have decremented";

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  {

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    // Ensure refcount is properly decremented when first symbol is non-permanent and second isn't

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    Symbol* integer = SymbolTable::new_symbol("java/lang/Integer");

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    ASSERT_TRUE(integer->is_permanent()) << "java/lang/Integer must be permanent";

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    Symbol* methodSig = SymbolTable::new_symbol("(LFoo;)Ljava/lang/Integer;");

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    SignatureStream ss(methodSig);

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    Symbol* sym = ss.as_symbol();

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    ASSERT_EQ(sym, foo) << "found symbol should be Foo: " << sym->as_C_string();

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    // This should mean the SS looks up and increments refcount to Foo

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    ASSERT_EQ(foo->refcount(), r1 + 1) << "refcount should be incremented";

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    ss.next();

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    sym = ss.as_symbol();

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    ASSERT_EQ(sym, integer) << "found symbol should be java/lang/Integer";

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    ASSERT_TRUE(!ss.is_done())

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      << "stream parsing should not be marked as done until"

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      <<" ss.next() called after the last symbol";

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    ss.next();

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    ASSERT_TRUE(ss.is_done()) << "stream parsing should be marked as done";

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  }

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  ASSERT_EQ(foo->refcount(), r1) << "refcount should have decremented";

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}

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