| File: | jdk/test/hotspot/gtest/oops/test_markWord.cpp |
| Warning: | line 97, column 8 Value stored to 'hash' during its initialization is never read |
Press '?' to see keyboard shortcuts
Keyboard shortcuts:
| 1 | /* |
| 2 | * Copyright (c) 2019, 2021, Oracle and/or its affiliates. All rights reserved. |
| 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 | * |
| 5 | * This code is free software; you can redistribute it and/or modify it |
| 6 | * under the terms of the GNU General Public License version 2 only, as |
| 7 | * published by the Free Software Foundation. |
| 8 | * |
| 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| 12 | * version 2 for more details (a copy is included in the LICENSE file that |
| 13 | * accompanied this code). |
| 14 | * |
| 15 | * You should have received a copy of the GNU General Public License version |
| 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
| 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| 18 | * |
| 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| 20 | * or visit www.oracle.com if you need additional information or have any |
| 21 | * questions. |
| 22 | */ |
| 23 | |
| 24 | #include "precompiled.hpp" |
| 25 | #include "classfile/vmClasses.hpp" |
| 26 | #include "memory/resourceArea.hpp" |
| 27 | #include "memory/universe.hpp" |
| 28 | #include "oops/instanceKlass.hpp" |
| 29 | #include "oops/oop.inline.hpp" |
| 30 | #include "runtime/atomic.hpp" |
| 31 | #include "runtime/interfaceSupport.inline.hpp" |
| 32 | #include "runtime/orderAccess.hpp" |
| 33 | #include "runtime/os.hpp" |
| 34 | #include "runtime/synchronizer.hpp" |
| 35 | #include "runtime/semaphore.inline.hpp" |
| 36 | #include "threadHelper.inline.hpp" |
| 37 | #include "unittest.hpp" |
| 38 | #include "utilities/globalDefinitions.hpp" |
| 39 | #include "utilities/ostream.hpp" |
| 40 | |
| 41 | // The test doesn't work for PRODUCT because it needs WizardMode |
| 42 | #ifndef PRODUCT |
| 43 | static bool test_pattern(stringStream* st, const char* pattern) { |
| 44 | return (strstr(st->as_string(), pattern) != NULL__null); |
| 45 | } |
| 46 | |
| 47 | static void assert_test_pattern(Handle object, const char* pattern) { |
| 48 | stringStream st; |
| 49 | object->print_on(&st); |
| 50 | ASSERT_TRUE(test_pattern(&st, pattern))switch (0) case 0: default: if (const ::testing::AssertionResult gtest_ar_ = ::testing::AssertionResult(test_pattern(&st, pattern))) ; else return ::testing::internal::AssertHelper(:: testing::TestPartResult::kFatalFailure, "/home/daniel/Projects/java/jdk/test/hotspot/gtest/oops/test_markWord.cpp" , 50, ::testing::internal::GetBoolAssertionFailureMessage( gtest_ar_ , "test_pattern(&st, pattern)", "false", "true").c_str()) = ::testing::Message() << pattern << " not in " << st.as_string(); |
| 51 | } |
| 52 | |
| 53 | class LockerThread : public JavaTestThread { |
| 54 | oop _obj; |
| 55 | public: |
| 56 | LockerThread(Semaphore* post, oop obj) : JavaTestThread(post), _obj(obj) {} |
| 57 | virtual ~LockerThread() {} |
| 58 | |
| 59 | void main_run() { |
| 60 | JavaThread* THREAD__the_thread__ = JavaThread::current(); |
| 61 | HandleMark hm(THREAD__the_thread__); |
| 62 | Handle h_obj(THREAD__the_thread__, _obj); |
| 63 | ResourceMark rm(THREAD__the_thread__); |
| 64 | |
| 65 | // Wait gets the lock inflated. |
| 66 | // The object will stay locked for the context of 'ol' so the lock will |
| 67 | // still be inflated after the notify_all() call. Deflation can't happen |
| 68 | // while an ObjectMonitor is "busy" and being locked is the most "busy" |
| 69 | // state we have... |
| 70 | ObjectLocker ol(h_obj, THREAD__the_thread__); |
| 71 | ol.notify_all(THREAD__the_thread__); |
| 72 | assert_test_pattern(h_obj, "monitor"); |
| 73 | } |
| 74 | }; |
| 75 | |
| 76 | |
| 77 | TEST_VM(markWord, printing)class markWord_printing_vm_Test : public ::testing::Test { public : markWord_printing_vm_Test() {} private: virtual void TestBody (); static ::testing::TestInfo* const test_info_ __attribute__ ((unused)); markWord_printing_vm_Test(markWord_printing_vm_Test const &) = delete; void operator=(markWord_printing_vm_Test const &) = delete;};::testing::TestInfo* const markWord_printing_vm_Test ::test_info_ = ::testing::internal::MakeAndRegisterTestInfo( "markWord", "printing_vm", __null, __null, ::testing::internal ::CodeLocation("/home/daniel/Projects/java/jdk/test/hotspot/gtest/oops/test_markWord.cpp" , 77), (::testing::internal::GetTestTypeId()), ::testing::Test ::SetUpTestCase, ::testing::Test::TearDownTestCase, new ::testing ::internal::TestFactoryImpl< markWord_printing_vm_Test> );void markWord_printing_vm_Test::TestBody() { |
| 78 | JavaThread* THREAD__the_thread__ = JavaThread::current(); |
| 79 | ThreadInVMfromNative invm(THREAD__the_thread__); |
| 80 | ResourceMark rm(THREAD__the_thread__); |
| 81 | |
| 82 | oop obj = vmClasses::Byte_klass()->allocate_instance(THREAD__the_thread__); |
| 83 | |
| 84 | FlagSetting fs(WizardMode, true); |
| 85 | |
| 86 | HandleMark hm(THREAD__the_thread__); |
| 87 | Handle h_obj(THREAD__the_thread__, obj); |
| 88 | |
| 89 | // Thread tries to lock it. |
| 90 | { |
| 91 | ObjectLocker ol(h_obj, THREAD__the_thread__); |
| 92 | assert_test_pattern(h_obj, "locked"); |
| 93 | } |
| 94 | assert_test_pattern(h_obj, "is_neutral no_hash"); |
| 95 | |
| 96 | // Hash the object then print it. |
| 97 | intx hash = h_obj->identity_hash(); |
Value stored to 'hash' during its initialization is never read | |
| 98 | assert_test_pattern(h_obj, "is_neutral hash=0x"); |
| 99 | |
| 100 | // Wait gets the lock inflated. |
| 101 | { |
| 102 | ObjectLocker ol(h_obj, THREAD__the_thread__); |
| 103 | |
| 104 | Semaphore done(0); |
| 105 | LockerThread* st; |
| 106 | st = new LockerThread(&done, h_obj()); |
| 107 | st->doit(); |
| 108 | |
| 109 | ol.wait(THREAD__the_thread__); |
| 110 | assert_test_pattern(h_obj, "monitor"); |
| 111 | done.wait_with_safepoint_check(THREAD__the_thread__); // wait till the thread is done. |
| 112 | } |
| 113 | } |
| 114 | #endif // PRODUCT |