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/*
* Copyright (c) 2020, 2024, 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.
*/
#include "precompiled.hpp"
#include "runtime/thread.inline.hpp"
#include "runtime/threadSMR.hpp"
#include "unittest.hpp"
class ThreadsListHandleTest : public ::testing::Test {
public:
// Accessors for the Threads class:
//
// Return the protected Thread::_threads_hazard_ptr field:
static ThreadsList* get_Thread_threads_hazard_ptr(Thread* thr) {
return thr->get_threads_hazard_ptr();
}
// Return the protected Thread::_threads_list_ptr field:
static SafeThreadsListPtr* get_Thread_threads_list_ptr(Thread* thr) {
return thr->_threads_list_ptr;
}
// Return the protected Thread::_nested_threads_hazard_ptr_cnt field:
static uint get_Thread_nested_threads_hazard_ptr_cnt(Thread* thr) {
return thr->nested_threads_hazard_ptr_cnt();
}
// Accessors for the ThreadsListHandle class:
//
// Return the private ThreadsListHandle::_list_ptr field:
static SafeThreadsListPtr* get_TLH_list_ptr(ThreadsListHandle* tlh_p) {
return &tlh_p->_list_ptr;
}
// Accessors for the ThreadsList class:
//
// Return the private ThreadsList::_nested_handle_cnt field:
static intx get_TL_nested_handle_cnt(ThreadsList* tl_p) {
return tl_p->_nested_handle_cnt;
}
// Accessors for the SafeThreadsListPtr class:
//
// Return the private SafeThreadsListPtr::_thread field:
static Thread* get_STLP_thread(SafeThreadsListPtr* stlp_p) {
return stlp_p->_thread;
}
// Return the private SafeThreadsListPtr::_has_ref_count field:
static bool get_STLP_has_ref_count(SafeThreadsListPtr* stlp_p) {
return stlp_p->_has_ref_count;
}
// Return the private SafeThreadsListPtr::_needs_release field:
static bool get_STLP_needs_release(SafeThreadsListPtr* stlp_p) {
return stlp_p->_needs_release;
}
};
TEST_VM(ThreadsListHandle, sanity) {
bool saved_flag_val = EnableThreadSMRStatistics;
EnableThreadSMRStatistics = true; // enable Thread::_nested_threads_hazard_ptr_cnt
Thread* thr = Thread::current();
// Test case: no ThreadsListHandle
//
// Verify the current thread refers to no ThreadsListHandle:
EXPECT_EQ(ThreadsListHandleTest::get_Thread_threads_hazard_ptr(thr), (ThreadsList*)nullptr)
<< "thr->_threads_hazard_ptr must be null";
EXPECT_EQ(ThreadsListHandleTest::get_Thread_threads_list_ptr(thr), (SafeThreadsListPtr*) nullptr)
<< "thr->_threads_list_ptr must be null";
EXPECT_EQ(ThreadsListHandleTest::get_Thread_nested_threads_hazard_ptr_cnt(thr), (uint)0)
<< "thr->_nested_threads_hazard_ptr_cnt must be 0";
// Test case: single ThreadsListHandle, no recursion
//
{
ThreadsListHandle tlh1;
SafeThreadsListPtr* list_ptr1 = ThreadsListHandleTest::get_TLH_list_ptr(&tlh1);
// Verify the current thread refers to tlh1:
EXPECT_EQ(ThreadsListHandleTest::get_Thread_threads_hazard_ptr(thr), tlh1.list())
<< "thr->_threads_hazard_ptr must match tlh1.list()";
EXPECT_EQ(ThreadsListHandleTest::get_Thread_threads_list_ptr(thr), list_ptr1)
<< "thr->_threads_list_ptr must match list_ptr1";
EXPECT_EQ(ThreadsListHandleTest::get_Thread_nested_threads_hazard_ptr_cnt(thr), (uint)0)
<< "thr->_nested_threads_hazard_ptr_cnt must be 0";
// Verify tlh1 has the right field values:
EXPECT_EQ(list_ptr1->previous(), (SafeThreadsListPtr*)nullptr)
<< "list_ptr1->previous() must be null";
EXPECT_EQ(ThreadsListHandleTest::get_STLP_thread(list_ptr1), thr)
<< "list_ptr1->_thread must match current thread";
EXPECT_EQ(list_ptr1->list(), tlh1.list())
<< "list_ptr1->list() must match tlh1.list()";
EXPECT_EQ(ThreadsListHandleTest::get_STLP_has_ref_count(list_ptr1), false)
<< "list_ptr1->_has_ref_count must be false";
EXPECT_EQ(ThreadsListHandleTest::get_STLP_needs_release(list_ptr1), true)
<< "list_ptr1->_needs_release must be true";
// Verify tlh1 ThreadsList has the right field values:
EXPECT_EQ(ThreadsListHandleTest::get_TL_nested_handle_cnt(list_ptr1->list()), (intx)0)
<< "list_ptr1->list()->_nested_handle_cnt must be 0";
} // destroy tlh1
// Test case: after first ThreadsListHandle (tlh1) has been destroyed
//
// Verify the current thread refers to no ThreadsListHandle:
EXPECT_EQ(ThreadsListHandleTest::get_Thread_threads_hazard_ptr(thr), (ThreadsList*)nullptr)
<< "thr->_threads_hazard_ptr must match be null";
EXPECT_EQ(ThreadsListHandleTest::get_Thread_threads_list_ptr(thr), (SafeThreadsListPtr*) nullptr)
<< "thr->_threads_list_ptr must be null";
EXPECT_EQ(ThreadsListHandleTest::get_Thread_nested_threads_hazard_ptr_cnt(thr), (uint)0)
<< "thr->_nested_threads_hazard_ptr_cnt must be 0";
// Test case: first ThreadsListHandle to prepare for nesting
//
{
ThreadsListHandle tlh1;
SafeThreadsListPtr* list_ptr1 = ThreadsListHandleTest::get_TLH_list_ptr(&tlh1);
// Verify the current thread refers to tlh1:
EXPECT_EQ(ThreadsListHandleTest::get_Thread_threads_hazard_ptr(thr), tlh1.list())
<< "thr->_threads_hazard_ptr must match tlh1.list()";
EXPECT_EQ(ThreadsListHandleTest::get_Thread_threads_list_ptr(thr), list_ptr1)
<< "thr->_threads_list_ptr must match list_ptr1";
EXPECT_EQ(ThreadsListHandleTest::get_Thread_nested_threads_hazard_ptr_cnt(thr), (uint)0)
<< "thr->_nested_threads_hazard_ptr_cnt must be 0";
// Verify tlh1 has the right field values:
EXPECT_EQ(list_ptr1->previous(), (SafeThreadsListPtr*)nullptr)
<< "list_ptr1->previous() must be null";
EXPECT_EQ(ThreadsListHandleTest::get_STLP_thread(list_ptr1), thr)
<< "list_ptr1->_thread must match current thread";
EXPECT_EQ(list_ptr1->list(), tlh1.list())
<< "list_ptr1->list() must match tlh1.list()";
EXPECT_EQ(ThreadsListHandleTest::get_STLP_has_ref_count(list_ptr1), false)
<< "list_ptr1->_has_ref_count must be false";
EXPECT_EQ(ThreadsListHandleTest::get_STLP_needs_release(list_ptr1), true)
<< "list_ptr1->_needs_release must be true";
// Verify tlh1 ThreadsList has the right field values:
EXPECT_EQ(ThreadsListHandleTest::get_TL_nested_handle_cnt(list_ptr1->list()), (intx)0)
<< "list_ptr1->list()->_nested_handle_cnt must be 0";
// Test case: first nested ThreadsListHandle
//
{
ThreadsListHandle tlh2;
SafeThreadsListPtr* list_ptr2 = ThreadsListHandleTest::get_TLH_list_ptr(&tlh2);
// Verify the current thread refers to tlh2:
EXPECT_EQ(ThreadsListHandleTest::get_Thread_threads_hazard_ptr(thr), tlh2.list())
<< "thr->_threads_hazard_ptr must match tlh2.list()";
// Disable unstable check of ThreadsListHandle.sanity_vm ThreadList values,
// until the root cause of test failure(JDK-8315141) has been fixed
// EXPECT_EQ(tlh1.list(), tlh2.list())
// << "tlh1.list() must match tlh2.list()";
EXPECT_EQ(ThreadsListHandleTest::get_Thread_threads_list_ptr(thr), list_ptr2)
<< "thr->_threads_list_ptr must match list_ptr2";
EXPECT_NE(list_ptr1, list_ptr2)
<< "list_ptr1 must not match list_ptr2";
EXPECT_EQ(ThreadsListHandleTest::get_Thread_nested_threads_hazard_ptr_cnt(thr), (uint)1)
<< "thr->_nested_threads_hazard_ptr_cnt must be 1";
// Verify tlh2 has the right field values:
EXPECT_EQ(list_ptr2->previous(), list_ptr1)
<< "list_ptr2->previous() must be list_ptr1";
EXPECT_EQ(ThreadsListHandleTest::get_STLP_thread(list_ptr2), thr)
<< "list_ptr2->_thread must match current thread";
EXPECT_EQ(list_ptr2->list(), tlh2.list())
<< "list_ptr2->list() must match tlh2.list()";
EXPECT_EQ(ThreadsListHandleTest::get_STLP_has_ref_count(list_ptr2), false)
<< "list_ptr2->_has_ref_count must be false";
EXPECT_EQ(ThreadsListHandleTest::get_STLP_needs_release(list_ptr2), true)
<< "list_ptr2->_needs_release must be true";
// Verify tlh1 has the right field values:
EXPECT_EQ(list_ptr1->previous(), (SafeThreadsListPtr*)nullptr)
<< "list_ptr1->previous() must be null";
EXPECT_EQ(ThreadsListHandleTest::get_STLP_thread(list_ptr1), thr)
<< "list_ptr1->_thread must match current thread";
EXPECT_EQ(list_ptr1->list(), tlh1.list())
<< "list_ptr1->list() must match tlh1.list()";
// When tlh2 was created, tlh1's _has_ref_count was set to true and
// tlh1's list->_nested_handle_cnt was incremented.
EXPECT_EQ(ThreadsListHandleTest::get_STLP_has_ref_count(list_ptr1), true)
<< "list_ptr1->_has_ref_count must be true";
EXPECT_EQ(ThreadsListHandleTest::get_STLP_needs_release(list_ptr1), true)
<< "list_ptr1->_needs_release must be true";
// Verify tlh1 ThreadsList has the right field values:
EXPECT_EQ(ThreadsListHandleTest::get_TL_nested_handle_cnt(list_ptr1->list()), (intx)1)
<< "list_ptr1->list()->_nested_handle_cnt must be 1";
} // destroy tlh2
// Test case: after first nested ThreadsListHandle (tlh2) has been destroyed
// Verify the current thread's hazard ptr is null:
EXPECT_EQ(ThreadsListHandleTest::get_Thread_threads_hazard_ptr(thr), (ThreadsList*)nullptr)
<< "thr->_threads_hazard_ptr must be null";
// Verify the current thread's threads list ptr refers to tlh1:
EXPECT_EQ(ThreadsListHandleTest::get_Thread_threads_list_ptr(thr), list_ptr1)
<< "thr->_threads_list_ptr must match list_ptr1";
EXPECT_EQ(ThreadsListHandleTest::get_Thread_nested_threads_hazard_ptr_cnt(thr), (uint)0)
<< "thr->_nested_threads_hazard_ptr_cnt must be 0";
// Verify tlh1 has the right field values:
EXPECT_EQ(list_ptr1->previous(), (SafeThreadsListPtr*)nullptr)
<< "list_ptr1->previous() must be null";
EXPECT_EQ(ThreadsListHandleTest::get_STLP_thread(list_ptr1), thr)
<< "list_ptr1->_thread must match current thread";
EXPECT_EQ(list_ptr1->list(), tlh1.list())
<< "list_ptr1->list() must match tlh1.list()";
// When tlh2 was created, tlh1's _has_ref_count was set to true and
// tlh1's list->_nested_handle_cnt was incremented.
EXPECT_EQ(ThreadsListHandleTest::get_STLP_has_ref_count(list_ptr1), true)
<< "list_ptr1->_has_ref_count must be true";
EXPECT_EQ(ThreadsListHandleTest::get_STLP_needs_release(list_ptr1), true)
<< "list_ptr1->_needs_release must be true";
// Verify tlh1 ThreadsList has the right field values:
EXPECT_EQ(ThreadsListHandleTest::get_TL_nested_handle_cnt(list_ptr1->list()), (intx)1)
<< "list_ptr1->list()->_nested_handle_cnt must be 1";
} // destroy tlh1
// Test case: after first ThreadsListHandle to prepare for nesting has been destroyed
//
// Verify the current thread refers to no ThreadsListHandle:
EXPECT_EQ(ThreadsListHandleTest::get_Thread_threads_hazard_ptr(thr), (ThreadsList*)nullptr)
<< "thr->_threads_hazard_ptr must match be null";
EXPECT_EQ(ThreadsListHandleTest::get_Thread_threads_list_ptr(thr), (SafeThreadsListPtr*) nullptr)
<< "thr->_threads_list_ptr must be null";
EXPECT_EQ(ThreadsListHandleTest::get_Thread_nested_threads_hazard_ptr_cnt(thr), (uint)0)
<< "thr->_nested_threads_hazard_ptr_cnt must be 0";
// Test case: first ThreadsListHandle to prepare for double nesting
//
{
ThreadsListHandle tlh1;
SafeThreadsListPtr* list_ptr1 = ThreadsListHandleTest::get_TLH_list_ptr(&tlh1);
// Verify the current thread refers to tlh1:
EXPECT_EQ(ThreadsListHandleTest::get_Thread_threads_hazard_ptr(thr), tlh1.list())
<< "thr->_threads_hazard_ptr must match tlh1.list()";
EXPECT_EQ(ThreadsListHandleTest::get_Thread_threads_list_ptr(thr), list_ptr1)
<< "thr->_threads_list_ptr must match list_ptr1";
EXPECT_EQ(ThreadsListHandleTest::get_Thread_nested_threads_hazard_ptr_cnt(thr), (uint)0)
<< "thr->_nested_threads_hazard_ptr_cnt must be 0";
// Verify tlh1 has the right field values:
EXPECT_EQ(list_ptr1->previous(), (SafeThreadsListPtr*)nullptr)
<< "list_ptr1->previous() must be null";
EXPECT_EQ(ThreadsListHandleTest::get_STLP_thread(list_ptr1), thr)
<< "list_ptr1->_thread must match current thread";
EXPECT_EQ(list_ptr1->list(), tlh1.list())
<< "list_ptr1->list() must match tlh1.list()";
EXPECT_EQ(ThreadsListHandleTest::get_STLP_has_ref_count(list_ptr1), false)
<< "list_ptr1->_has_ref_count must be false";
EXPECT_EQ(ThreadsListHandleTest::get_STLP_needs_release(list_ptr1), true)
<< "list_ptr1->_needs_release must be true";
// Verify tlh1 ThreadsList has the right field values:
EXPECT_EQ(ThreadsListHandleTest::get_TL_nested_handle_cnt(list_ptr1->list()), (intx)0)
<< "list_ptr1->list()->_nested_handle_cnt must be 0";
// Test case: first nested ThreadsListHandle
//
{
ThreadsListHandle tlh2;
SafeThreadsListPtr* list_ptr2 = ThreadsListHandleTest::get_TLH_list_ptr(&tlh2);
// Verify the current thread refers to tlh2:
EXPECT_EQ(ThreadsListHandleTest::get_Thread_threads_hazard_ptr(thr), tlh2.list())
<< "thr->_threads_hazard_ptr must match tlh2.list()";
// Disable unstable check of ThreadsListHandle.sanity_vm ThreadList values,
// until the root cause of test failure(JDK-8315141) has been fixed
// EXPECT_EQ(tlh1.list(), tlh2.list())
// << "tlh1.list() must match tlh2.list()";
EXPECT_EQ(ThreadsListHandleTest::get_Thread_threads_list_ptr(thr), list_ptr2)
<< "thr->_threads_list_ptr must match list_ptr2";
EXPECT_NE(list_ptr1, list_ptr2)
<< "list_ptr1 must not match list_ptr2";
EXPECT_EQ(ThreadsListHandleTest::get_Thread_nested_threads_hazard_ptr_cnt(thr), (uint)1)
<< "thr->_nested_threads_hazard_ptr_cnt must be 1";
// Verify tlh2 has the right field values:
EXPECT_EQ(list_ptr2->previous(), list_ptr1)
<< "list_ptr2->previous() must be list_ptr1";
EXPECT_EQ(ThreadsListHandleTest::get_STLP_thread(list_ptr2), thr)
<< "list_ptr2->_thread must match current thread";
EXPECT_EQ(list_ptr2->list(), tlh2.list())
<< "list_ptr2->list() must match tlh2.list()";
EXPECT_EQ(ThreadsListHandleTest::get_STLP_has_ref_count(list_ptr2), false)
<< "list_ptr2->_has_ref_count must be false";
EXPECT_EQ(ThreadsListHandleTest::get_STLP_needs_release(list_ptr2), true)
<< "list_ptr2->_needs_release must be true";
// Verify tlh1 has the right field values:
EXPECT_EQ(list_ptr1->previous(), (SafeThreadsListPtr*)nullptr)
<< "list_ptr1->previous() must be null";
EXPECT_EQ(ThreadsListHandleTest::get_STLP_thread(list_ptr1), thr)
<< "list_ptr1->_thread must match current thread";
EXPECT_EQ(list_ptr1->list(), tlh1.list())
<< "list_ptr1->list() must match tlh1.list()";
// When tlh2 was created, tlh1's _has_ref_count was set to true and
// tlh1's list->_nested_handle_cnt was incremented.
EXPECT_EQ(ThreadsListHandleTest::get_STLP_has_ref_count(list_ptr1), true)
<< "list_ptr1->_has_ref_count must be true";
EXPECT_EQ(ThreadsListHandleTest::get_STLP_needs_release(list_ptr1), true)
<< "list_ptr1->_needs_release must be true";
// Verify tlh1 ThreadsList has the right field values:
EXPECT_EQ(ThreadsListHandleTest::get_TL_nested_handle_cnt(list_ptr1->list()), (intx)1)
<< "list_ptr1->list()->_nested_handle_cnt must be 1";
// Test case: double nested ThreadsListHandle
//
{
ThreadsListHandle tlh3;
SafeThreadsListPtr* list_ptr3 = ThreadsListHandleTest::get_TLH_list_ptr(&tlh3);
// Verify the current thread refers to tlh3:
EXPECT_EQ(ThreadsListHandleTest::get_Thread_threads_hazard_ptr(thr), tlh3.list())
<< "thr->_threads_hazard_ptr must match tlh3.list()";
// Disable unstable check of ThreadsListHandle.sanity_vm ThreadList values,
// until the root cause of test failure(JDK-8315141) has been fixed
// EXPECT_EQ(tlh1.list(), tlh3.list())
// << "tlh1.list() must match tlh3.list()";
EXPECT_EQ(ThreadsListHandleTest::get_Thread_threads_list_ptr(thr), list_ptr3)
<< "thr->_threads_list_ptr must match list_ptr3";
EXPECT_NE(list_ptr1, list_ptr3)
<< "list_ptr1 must not match list_ptr3";
EXPECT_NE(list_ptr2, list_ptr3)
<< "list_ptr. must not match list_ptr3";
EXPECT_EQ(ThreadsListHandleTest::get_Thread_nested_threads_hazard_ptr_cnt(thr), (uint)2)
<< "thr->_nested_threads_hazard_ptr_cnt must be 2";
// Verify tlh3 has the right field values:
EXPECT_EQ(list_ptr3->previous(), list_ptr2)
<< "list_ptr3->previous() must be list_ptr2";
EXPECT_EQ(ThreadsListHandleTest::get_STLP_thread(list_ptr3), thr)
<< "list_ptr3->_thread must match current thread";
EXPECT_EQ(list_ptr3->list(), tlh3.list())
<< "list_ptr3->list() must match tlh3.list()";
EXPECT_EQ(ThreadsListHandleTest::get_STLP_has_ref_count(list_ptr3), false)
<< "list_ptr3->_has_ref_count must be false";
EXPECT_EQ(ThreadsListHandleTest::get_STLP_needs_release(list_ptr3), true)
<< "list_ptr3->_needs_release must be true";
// Verify tlh2 has the right field values:
EXPECT_EQ(list_ptr2->previous(), list_ptr1)
<< "list_ptr2->previous() must be list_ptr1";
EXPECT_EQ(ThreadsListHandleTest::get_STLP_thread(list_ptr2), thr)
<< "list_ptr2->_thread must match current thread";
EXPECT_EQ(list_ptr2->list(), tlh2.list())
<< "list_ptr2->list() must match tlh2.list()";
// When tlh3 was created, tlh2's _has_ref_count was set to true and
// tlh2's list->_nested_handle_cnt was incremented.
EXPECT_EQ(ThreadsListHandleTest::get_STLP_has_ref_count(list_ptr2), true)
<< "list_ptr2->_has_ref_count must be true";
EXPECT_EQ(ThreadsListHandleTest::get_STLP_needs_release(list_ptr2), true)
<< "list_ptr2->_needs_release must be true";
// Verify tlh1 has the right field values:
EXPECT_EQ(list_ptr1->previous(), (SafeThreadsListPtr*)nullptr)
<< "list_ptr1->previous() must be null";
EXPECT_EQ(ThreadsListHandleTest::get_STLP_thread(list_ptr1), thr)
<< "list_ptr1->_thread must match current thread";
EXPECT_EQ(list_ptr1->list(), tlh1.list())
<< "list_ptr1->list() must match tlh1.list()";
// When tlh2 was created, tlh1's _has_ref_count was set to true and
// tlh1's list->_nested_handle_cnt was incremented.
EXPECT_EQ(ThreadsListHandleTest::get_STLP_has_ref_count(list_ptr1), true)
<< "list_ptr1->_has_ref_count must be true";
EXPECT_EQ(ThreadsListHandleTest::get_STLP_needs_release(list_ptr1), true)
<< "list_ptr1->_needs_release must be true";
// Verify tlh1 ThreadsList has the right field values:
EXPECT_EQ(ThreadsListHandleTest::get_TL_nested_handle_cnt(list_ptr1->list()), (intx)2)
<< "list_ptr1->list()->_nested_handle_cnt must be 2";
} // destroy tlh3
// Test case: after double nested ThreadsListHandle (tlh3) has been destroyed
// Verify the current thread's hazard ptr is null:
EXPECT_EQ(ThreadsListHandleTest::get_Thread_threads_hazard_ptr(thr), (ThreadsList*)nullptr)
<< "thr->_threads_hazard_ptr must be null";
// Verify the current thread's threads list ptr refers to tlh2:
EXPECT_EQ(tlh1.list(), tlh2.list())
<< "tlh1.list() must match tlh2.list()";
EXPECT_EQ(ThreadsListHandleTest::get_Thread_threads_list_ptr(thr), list_ptr2)
<< "thr->_threads_list_ptr must match list_ptr2";
EXPECT_NE(list_ptr1, list_ptr2)
<< "list_ptr1 must not match list_ptr2";
EXPECT_EQ(ThreadsListHandleTest::get_Thread_nested_threads_hazard_ptr_cnt(thr), (uint)1)
<< "thr->_nested_threads_hazard_ptr_cnt must be 1";
// Verify tlh2 has the right field values:
EXPECT_EQ(list_ptr2->previous(), list_ptr1)
<< "list_ptr2->previous() must be list_ptr1";
EXPECT_EQ(ThreadsListHandleTest::get_STLP_thread(list_ptr2), thr)
<< "list_ptr2->_thread must match current thread";
EXPECT_EQ(list_ptr2->list(), tlh2.list())
<< "list_ptr2->list() must match tlh2.list()";
// When tlh3 was created, tlh2's _has_ref_count was set to true and
// tlh2's list->_nested_handle_cnt was incremented.
EXPECT_EQ(ThreadsListHandleTest::get_STLP_has_ref_count(list_ptr2), true)
<< "list_ptr2->_has_ref_count must be true";
EXPECT_EQ(ThreadsListHandleTest::get_STLP_needs_release(list_ptr2), true)
<< "list_ptr2->_needs_release must be true";
// Verify tlh1 has the right field values:
EXPECT_EQ(list_ptr1->previous(), (SafeThreadsListPtr*)nullptr)
<< "list_ptr1->previous() must be null";
EXPECT_EQ(ThreadsListHandleTest::get_STLP_thread(list_ptr1), thr)
<< "list_ptr1->_thread must match current thread";
EXPECT_EQ(list_ptr1->list(), tlh1.list())
<< "list_ptr1->list() must match tlh1.list()";
// When tlh2 was created, tlh1's _has_ref_count was set to true and
// tlh1's list->_nested_handle_cnt was incremented.
EXPECT_EQ(ThreadsListHandleTest::get_STLP_has_ref_count(list_ptr1), true)
<< "list_ptr1->_has_ref_count must be true";
EXPECT_EQ(ThreadsListHandleTest::get_STLP_needs_release(list_ptr1), true)
<< "list_ptr1->_needs_release must be true";
// Verify tlh1 ThreadsList has the right field values:
EXPECT_EQ(ThreadsListHandleTest::get_TL_nested_handle_cnt(list_ptr1->list()), (intx)2)
<< "list_ptr1->list()->_nested_handle_cnt must be 2";
} // destroy tlh2
// Test case: after first nested ThreadsListHandle (tlh2) has been destroyed
// Verify the current thread's hazard ptr is null:
EXPECT_EQ(ThreadsListHandleTest::get_Thread_threads_hazard_ptr(thr), (ThreadsList*)nullptr)
<< "thr->_threads_hazard_ptr must be null";
// Verify the current thread's threads list ptr refers to tlh1:
EXPECT_EQ(ThreadsListHandleTest::get_Thread_threads_list_ptr(thr), list_ptr1)
<< "thr->_threads_list_ptr must match list_ptr1";
EXPECT_EQ(ThreadsListHandleTest::get_Thread_nested_threads_hazard_ptr_cnt(thr), (uint)0)
<< "thr->_nested_threads_hazard_ptr_cnt must be 0";
// Verify tlh1 has the right field values:
EXPECT_EQ(list_ptr1->previous(), (SafeThreadsListPtr*)nullptr)
<< "list_ptr1->previous() must be null";
EXPECT_EQ(ThreadsListHandleTest::get_STLP_thread(list_ptr1), thr)
<< "list_ptr1->_thread must match current thread";
EXPECT_EQ(list_ptr1->list(), tlh1.list())
<< "list_ptr1->list() must match tlh1.list()";
// When tlh2 was created, tlh1's _has_ref_count was set to true and
// tlh1's list->_nested_handle_cnt was incremented.
EXPECT_EQ(ThreadsListHandleTest::get_STLP_has_ref_count(list_ptr1), true)
<< "list_ptr1->_has_ref_count must be true";
EXPECT_EQ(ThreadsListHandleTest::get_STLP_needs_release(list_ptr1), true)
<< "list_ptr1->_needs_release must be true";
// Verify tlh1 ThreadsList has the right field values:
EXPECT_EQ(ThreadsListHandleTest::get_TL_nested_handle_cnt(list_ptr1->list()), (intx)1)
<< "list_ptr1->list()->_nested_handle_cnt must be 1";
} // destroy tlh1
// Test case: after first ThreadsListHandle to prepare for double nesting has been destroyed
//
// Verify the current thread refers to no ThreadsListHandle:
EXPECT_EQ(ThreadsListHandleTest::get_Thread_threads_hazard_ptr(thr), (ThreadsList*)nullptr)
<< "thr->_threads_hazard_ptr must match be null";
EXPECT_EQ(ThreadsListHandleTest::get_Thread_threads_list_ptr(thr), (SafeThreadsListPtr*) nullptr)
<< "thr->_threads_list_ptr must be null";
EXPECT_EQ(ThreadsListHandleTest::get_Thread_nested_threads_hazard_ptr_cnt(thr), (uint)0)
<< "thr->_nested_threads_hazard_ptr_cnt must be 0";
// Test case: first ThreadsListHandle to prepare for back-to-back nesting
//
{
ThreadsListHandle tlh1;
SafeThreadsListPtr* list_ptr1 = ThreadsListHandleTest::get_TLH_list_ptr(&tlh1);
// Verify the current thread refers to tlh1:
EXPECT_EQ(ThreadsListHandleTest::get_Thread_threads_hazard_ptr(thr), tlh1.list())
<< "thr->_threads_hazard_ptr must match tlh1.list()";
EXPECT_EQ(ThreadsListHandleTest::get_Thread_threads_list_ptr(thr), list_ptr1)
<< "thr->_threads_list_ptr must match list_ptr1";
EXPECT_EQ(ThreadsListHandleTest::get_Thread_nested_threads_hazard_ptr_cnt(thr), (uint)0)
<< "thr->_nested_threads_hazard_ptr_cnt must be 0";
// Verify tlh1 has the right field values:
EXPECT_EQ(list_ptr1->previous(), (SafeThreadsListPtr*)nullptr)
<< "list_ptr1->previous() must be null";
EXPECT_EQ(ThreadsListHandleTest::get_STLP_thread(list_ptr1), thr)
<< "list_ptr1->_thread must match current thread";
EXPECT_EQ(list_ptr1->list(), tlh1.list())
<< "list_ptr1->list() must match tlh1.list()";
EXPECT_EQ(ThreadsListHandleTest::get_STLP_has_ref_count(list_ptr1), false)
<< "list_ptr1->_has_ref_count must be false";
EXPECT_EQ(ThreadsListHandleTest::get_STLP_needs_release(list_ptr1), true)
<< "list_ptr1->_needs_release must be true";
// Verify tlh1 ThreadsList has the right field values:
EXPECT_EQ(ThreadsListHandleTest::get_TL_nested_handle_cnt(list_ptr1->list()), (intx)0)
<< "list_ptr1->list()->_nested_handle_cnt must be 0";
// Test case: first back-to-back nested ThreadsListHandle
//
{
ThreadsListHandle tlh2a;
SafeThreadsListPtr* list_ptr2a = ThreadsListHandleTest::get_TLH_list_ptr(&tlh2a);
// Verify the current thread refers to tlh2a:
EXPECT_EQ(ThreadsListHandleTest::get_Thread_threads_hazard_ptr(thr), tlh2a.list())
<< "thr->_threads_hazard_ptr must match tlh2a.list()";
// Disable unstable check of ThreadsListHandle.sanity_vm ThreadList values,
// until the root cause of test failure(JDK-8315141) has been fixed
// EXPECT_EQ(tlh1.list(), tlh2a.list())
// << "tlh1.list() must match tlh2a.list()";
EXPECT_EQ(ThreadsListHandleTest::get_Thread_threads_list_ptr(thr), list_ptr2a)
<< "thr->_threads_list_ptr must match list_ptr2a";
EXPECT_NE(list_ptr1, list_ptr2a)
<< "list_ptr1 must not match list_ptr2a";
EXPECT_EQ(ThreadsListHandleTest::get_Thread_nested_threads_hazard_ptr_cnt(thr), (uint)1)
<< "thr->_nested_threads_hazard_ptr_cnt must be 1";
// Verify tlh2a has the right field values:
EXPECT_EQ(list_ptr2a->previous(), list_ptr1)
<< "list_ptr2a->previous() must be list_ptr1";
EXPECT_EQ(ThreadsListHandleTest::get_STLP_thread(list_ptr2a), thr)
<< "list_ptr2a->_thread must match current thread";
EXPECT_EQ(list_ptr2a->list(), tlh2a.list())
<< "list_ptr2a->list() must match tlh2a.list()";
EXPECT_EQ(ThreadsListHandleTest::get_STLP_has_ref_count(list_ptr2a), false)
<< "list_ptr2a->_has_ref_count must be false";
EXPECT_EQ(ThreadsListHandleTest::get_STLP_needs_release(list_ptr2a), true)
<< "list_ptr2a->_needs_release must be true";
// Verify tlh1 has the right field values:
EXPECT_EQ(list_ptr1->previous(), (SafeThreadsListPtr*)nullptr)
<< "list_ptr1->previous() must be null";
EXPECT_EQ(ThreadsListHandleTest::get_STLP_thread(list_ptr1), thr)
<< "list_ptr1->_thread must match current thread";
EXPECT_EQ(list_ptr1->list(), tlh1.list())
<< "list_ptr1->list() must match tlh1.list()";
// When tlh2a was created, tlh1's _has_ref_count was set to true and
// tlh1's list->_nested_handle_cnt was incremented.
EXPECT_EQ(ThreadsListHandleTest::get_STLP_has_ref_count(list_ptr1), true)
<< "list_ptr1->_has_ref_count must be true";
EXPECT_EQ(ThreadsListHandleTest::get_STLP_needs_release(list_ptr1), true)
<< "list_ptr1->_needs_release must be true";
// Verify tlh1 ThreadsList has the right field values:
EXPECT_EQ(ThreadsListHandleTest::get_TL_nested_handle_cnt(list_ptr1->list()), (intx)1)
<< "list_ptr1->list()->_nested_handle_cnt must be 1";
} // destroy tlh2a
// Test case: after first back-to-back nested ThreadsListHandle (tlh2a) has been destroyed
// Verify the current thread's hazard ptr is null:
EXPECT_EQ(ThreadsListHandleTest::get_Thread_threads_hazard_ptr(thr), (ThreadsList*)nullptr)
<< "thr->_threads_hazard_ptr must be null";
// Verify the current thread's threads list ptr refers to tlh1:
EXPECT_EQ(ThreadsListHandleTest::get_Thread_threads_list_ptr(thr), list_ptr1)
<< "thr->_threads_list_ptr must match list_ptr1";
EXPECT_EQ(ThreadsListHandleTest::get_Thread_nested_threads_hazard_ptr_cnt(thr), (uint)0)
<< "thr->_nested_threads_hazard_ptr_cnt must be 0";
// Verify tlh1 has the right field values:
EXPECT_EQ(list_ptr1->previous(), (SafeThreadsListPtr*)nullptr)
<< "list_ptr1->previous() must be null";
EXPECT_EQ(ThreadsListHandleTest::get_STLP_thread(list_ptr1), thr)
<< "list_ptr1->_thread must match current thread";
EXPECT_EQ(list_ptr1->list(), tlh1.list())
<< "list_ptr1->list() must match tlh1.list()";
// When tlh2a was created, tlh1's _has_ref_count was set to true and
// tlh1's list->_nested_handle_cnt was incremented.
EXPECT_EQ(ThreadsListHandleTest::get_STLP_has_ref_count(list_ptr1), true)
<< "list_ptr1->_has_ref_count must be true";
EXPECT_EQ(ThreadsListHandleTest::get_STLP_needs_release(list_ptr1), true)
<< "list_ptr1->_needs_release must be true";
// Verify tlh1 ThreadsList has the right field values:
EXPECT_EQ(ThreadsListHandleTest::get_TL_nested_handle_cnt(list_ptr1->list()), (intx)1)
<< "list_ptr1->list()->_nested_handle_cnt must be 1";
// Test case: second back-to-back nested ThreadsListHandle
//
{
ThreadsListHandle tlh2b;
SafeThreadsListPtr* list_ptr2b = ThreadsListHandleTest::get_TLH_list_ptr(&tlh2b);
// Verify the current thread refers to tlh2b:
EXPECT_EQ(ThreadsListHandleTest::get_Thread_threads_hazard_ptr(thr), tlh2b.list())
<< "thr->_threads_hazard_ptr must match tlh2b.list()";
// Disable unstable check of ThreadsListHandle.sanity_vm ThreadList values,
// until the root cause of test failure(JDK-8315141) has been fixed
// EXPECT_EQ(tlh1.list(), tlh2b.list())
// << "tlh1.list() must match tlh2b.list()";
EXPECT_EQ(ThreadsListHandleTest::get_Thread_threads_list_ptr(thr), list_ptr2b)
<< "thr->_threads_list_ptr must match list_ptr2b";
EXPECT_NE(list_ptr1, list_ptr2b)
<< "list_ptr1 must not match list_ptr2b";
EXPECT_EQ(ThreadsListHandleTest::get_Thread_nested_threads_hazard_ptr_cnt(thr), (uint)1)
<< "thr->_nested_threads_hazard_ptr_cnt must be 1";
// Verify tlh2b has the right field values:
EXPECT_EQ(list_ptr2b->previous(), list_ptr1)
<< "list_ptr2b->previous() must be list_ptr1";
EXPECT_EQ(ThreadsListHandleTest::get_STLP_thread(list_ptr2b), thr)
<< "list_ptr2b->_thread must match current thread";
EXPECT_EQ(list_ptr2b->list(), tlh2b.list())
<< "list_ptr2b->list() must match tlh2b.list()";
EXPECT_EQ(ThreadsListHandleTest::get_STLP_has_ref_count(list_ptr2b), false)
<< "list_ptr2b->_has_ref_count must be false";
EXPECT_EQ(ThreadsListHandleTest::get_STLP_needs_release(list_ptr2b), true)
<< "list_ptr2b->_needs_release must be true";
// Verify tlh1 has the right field values:
EXPECT_EQ(list_ptr1->previous(), (SafeThreadsListPtr*)nullptr)
<< "list_ptr1->previous() must be null";
EXPECT_EQ(ThreadsListHandleTest::get_STLP_thread(list_ptr1), thr)
<< "list_ptr1->_thread must match current thread";
EXPECT_EQ(list_ptr1->list(), tlh1.list())
<< "list_ptr1->list() must match tlh1.list()";
// When tlh2a was created, tlh1's _has_ref_count was set to true and
// tlh1's list->_nested_handle_cnt was incremented.
EXPECT_EQ(ThreadsListHandleTest::get_STLP_has_ref_count(list_ptr1), true)
<< "list_ptr1->_has_ref_count must be true";
EXPECT_EQ(ThreadsListHandleTest::get_STLP_needs_release(list_ptr1), true)
<< "list_ptr1->_needs_release must be true";
// Verify tlh1 ThreadsList has the right field values:
EXPECT_EQ(ThreadsListHandleTest::get_TL_nested_handle_cnt(list_ptr1->list()), (intx)1)
<< "list_ptr1->list()->_nested_handle_cnt must be 1";
} // destroy tlh2b
// Test case: after second back-to-back nested ThreadsListHandle (tlh2b) has been destroyed
// Verify the current thread's hazard ptr is null:
EXPECT_EQ(ThreadsListHandleTest::get_Thread_threads_hazard_ptr(thr), (ThreadsList*)nullptr)
<< "thr->_threads_hazard_ptr must be null";
// Verify the current thread's threads list ptr refers to tlh1:
EXPECT_EQ(ThreadsListHandleTest::get_Thread_threads_list_ptr(thr), list_ptr1)
<< "thr->_threads_list_ptr must match list_ptr1";
EXPECT_EQ(ThreadsListHandleTest::get_Thread_nested_threads_hazard_ptr_cnt(thr), (uint)0)
<< "thr->_nested_threads_hazard_ptr_cnt must be 0";
// Verify tlh1 has the right field values:
EXPECT_EQ(list_ptr1->previous(), (SafeThreadsListPtr*)nullptr)
<< "list_ptr1->previous() must be null";
EXPECT_EQ(ThreadsListHandleTest::get_STLP_thread(list_ptr1), thr)
<< "list_ptr1->_thread must match current thread";
EXPECT_EQ(list_ptr1->list(), tlh1.list())
<< "list_ptr1->list() must match tlh1.list()";
// When tlh2a was created, tlh1's _has_ref_count was set to true and
// tlh1's list->_nested_handle_cnt was incremented.
EXPECT_EQ(ThreadsListHandleTest::get_STLP_has_ref_count(list_ptr1), true)
<< "list_ptr1->_has_ref_count must be true";
EXPECT_EQ(ThreadsListHandleTest::get_STLP_needs_release(list_ptr1), true)
<< "list_ptr1->_needs_release must be true";
// Verify tlh1 ThreadsList has the right field values:
EXPECT_EQ(ThreadsListHandleTest::get_TL_nested_handle_cnt(list_ptr1->list()), (intx)1)
<< "list_ptr1->list()->_nested_handle_cnt must be 1";
} // destroy tlh1
// Test case: after first ThreadsListHandle to prepare for back-to-back nesting has been destroyed
//
// Verify the current thread refers to no ThreadsListHandle:
EXPECT_EQ(ThreadsListHandleTest::get_Thread_threads_hazard_ptr(thr), (ThreadsList*)nullptr)
<< "thr->_threads_hazard_ptr must match be null";
EXPECT_EQ(ThreadsListHandleTest::get_Thread_threads_list_ptr(thr), (SafeThreadsListPtr*) nullptr)
<< "thr->_threads_list_ptr must be null";
EXPECT_EQ(ThreadsListHandleTest::get_Thread_nested_threads_hazard_ptr_cnt(thr), (uint)0)
<< "thr->_nested_threads_hazard_ptr_cnt must be 0";
EnableThreadSMRStatistics = saved_flag_val;
}
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