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/*
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* Copyright (c) 2017, 2018, 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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*/
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#include "precompiled.hpp"
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// This test performs mocking of certain JVM functionality. This works by
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// including the source file under test inside an anonymous namespace (which
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// prevents linking conflicts) with the mocked symbols redefined.
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// The include list should mirror the one found in the included source file -
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// with the ones that should pick up the mocks removed. Those should be included
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// later after the mocks have been defined.
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#include "jvm.h"
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#include "classfile/classLoaderStats.hpp"
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#include "classfile/javaClasses.hpp"
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#include "code/codeCache.hpp"
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#include "compiler/compileBroker.hpp"
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#include "gc/g1/g1HeapRegionEventSender.hpp"
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#include "gc/shared/gcConfiguration.hpp"
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#include "gc/shared/gcTrace.hpp"
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#include "gc/shared/objectCountEventSender.hpp"
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#include "gc/shared/vmGCOperations.hpp"
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#include "jfr/jfrEvents.hpp"
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#include "jfr/periodic/jfrModuleEvent.hpp"
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#include "jfr/periodic/jfrOSInterface.hpp"
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#include "jfr/periodic/jfrThreadCPULoadEvent.hpp"
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#include "jfr/periodic/jfrThreadDumpEvent.hpp"
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#include "jfr/recorder/jfrRecorder.hpp"
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#include "jfr/support/jfrThreadId.hpp"
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#include "jfr/utilities/jfrTime.hpp"
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#include "logging/log.hpp"
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#include "memory/heapInspection.hpp"
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#include "memory/resourceArea.hpp"
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#include "oops/oop.inline.hpp"
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#include "runtime/arguments.hpp"
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#include "runtime/flags/jvmFlag.hpp"
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#include "runtime/globals.hpp"
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#include "runtime/os.hpp"
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#include "runtime/os_perf.hpp"
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#include "runtime/thread.inline.hpp"
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#include "runtime/threadSMR.hpp"
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#include "runtime/sweeper.hpp"
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#include "runtime/vmThread.hpp"
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#include "services/classLoadingService.hpp"
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#include "services/management.hpp"
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#include "services/threadService.hpp"
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#include "utilities/exceptions.hpp"
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#include "utilities/globalDefinitions.hpp"
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#include "unittest.hpp"
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namespace {
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class MockEventThreadCPULoad : public ::EventThreadCPULoad
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{
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public:
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float user;
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float system;
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public:
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MockEventThreadCPULoad(EventStartTime timing=TIMED) : ::EventThreadCPULoad(timing) {}
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void set_user(float new_value) {
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user = new_value;
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}
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void set_system(float new_value) {
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system = new_value;
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}
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};
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class MockOs : public ::os {
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public:
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static jlong user_cpu_time;
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static jlong system_cpu_time;
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static jlong thread_cpu_time(Thread *thread, bool user_sys_cpu_time) {
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return user_sys_cpu_time ? user_cpu_time + system_cpu_time : user_cpu_time;
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}
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};
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jlong MockOs::user_cpu_time;
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jlong MockOs::system_cpu_time;
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// Reincluding source files in the anonymous namespace unfortunately seems to
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// behave strangely with precompiled headers (only when using gcc though)
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#ifndef DONT_USE_PRECOMPILED_HEADER
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#define DONT_USE_PRECOMPILED_HEADER
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#endif
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#define os MockOs
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#define EventThreadCPULoad MockEventThreadCPULoad
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#include "jfrfiles/jfrPeriodic.hpp"
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#include "jfr/periodic/jfrPeriodic.cpp"
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#undef os
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#undef EventThreadCPULoad
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} // anonymous namespace
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class JfrTestThreadCPULoadSingle : public ::testing::Test {
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protected:
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JavaThread* thread;
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JfrThreadLocal* thread_data;
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MockEventThreadCPULoad event;
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void SetUp() {
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thread = new JavaThread();
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thread_data = thread->jfr_thread_local();
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thread_data->set_wallclock_time(0);
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thread_data->set_user_time(0);
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thread_data->set_cpu_time(0);
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}
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void TearDown() {
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delete thread;
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}
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};
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TEST_VM_F(JfrTestThreadCPULoadSingle, DISABLED_SingleCpu) {
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MockOs::user_cpu_time = 100 * NANOSECS_PER_MILLISEC;
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MockOs::system_cpu_time = 100 * NANOSECS_PER_MILLISEC;
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EXPECT_TRUE(JfrThreadCPULoadEvent::update_event(event, thread, 400 * NANOSECS_PER_MILLISEC, 1));
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EXPECT_FLOAT_EQ(0.25, event.user);
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EXPECT_FLOAT_EQ(0.25, event.system);
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}
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TEST_VM_F(JfrTestThreadCPULoadSingle, DISABLED_MultipleCpus) {
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MockOs::user_cpu_time = 100 * NANOSECS_PER_MILLISEC;
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MockOs::system_cpu_time = 100 * NANOSECS_PER_MILLISEC;
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EXPECT_TRUE(JfrThreadCPULoadEvent::update_event(event, thread, 400 * NANOSECS_PER_MILLISEC, 2));
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EXPECT_FLOAT_EQ(0.125, event.user);
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EXPECT_FLOAT_EQ(0.125, event.system);
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}
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TEST_VM_F(JfrTestThreadCPULoadSingle, DISABLED_BelowThreshold) {
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MockOs::user_cpu_time = 100;
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MockOs::system_cpu_time = 100;
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EXPECT_FALSE(JfrThreadCPULoadEvent::update_event(event, thread, 400 * NANOSECS_PER_MILLISEC, 2));
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}
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TEST_VM_F(JfrTestThreadCPULoadSingle, DISABLED_UserAboveMaximum) {
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// First call will not report above 100%
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MockOs::user_cpu_time = 200 * NANOSECS_PER_MILLISEC;
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MockOs::system_cpu_time = 100 * NANOSECS_PER_MILLISEC;
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EXPECT_TRUE(JfrThreadCPULoadEvent::update_event(event, thread, 200 * NANOSECS_PER_MILLISEC, 1));
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EXPECT_FLOAT_EQ(0.5, event.user);
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EXPECT_FLOAT_EQ(0.5, event.system);
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// Second call will see an extra 100 millisecs user time from the remainder
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EXPECT_TRUE(JfrThreadCPULoadEvent::update_event(event, thread, (200 + 400) * NANOSECS_PER_MILLISEC, 1));
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EXPECT_FLOAT_EQ(0.25, event.user);
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EXPECT_FLOAT_EQ(0, event.system);
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}
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TEST_VM_F(JfrTestThreadCPULoadSingle, DISABLED_SystemAboveMaximum) {
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// First call will not report above 100%
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MockOs::user_cpu_time = 100 * NANOSECS_PER_MILLISEC;
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MockOs::system_cpu_time = 300 * NANOSECS_PER_MILLISEC;
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EXPECT_TRUE(JfrThreadCPULoadEvent::update_event(event, thread, 200 * NANOSECS_PER_MILLISEC, 1));
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EXPECT_FLOAT_EQ(0, event.user);
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EXPECT_FLOAT_EQ(1, event.system);
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// Second call will see an extra 100 millisecs user and system time from the remainder
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EXPECT_TRUE(JfrThreadCPULoadEvent::update_event(event, thread, (200 + 400) * NANOSECS_PER_MILLISEC, 1));
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EXPECT_FLOAT_EQ(0.25, event.user);
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EXPECT_FLOAT_EQ(0.25, event.system);
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}
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TEST_VM_F(JfrTestThreadCPULoadSingle, DISABLED_SystemTimeDecreasing) {
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// As seen in an actual run - caused by different resolution for total and user time
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// Total time User time (Calculated system time)
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// 200 100 100
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// 210 200 10
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// 400 300 100
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MockOs::user_cpu_time = 100 * NANOSECS_PER_MILLISEC;
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MockOs::system_cpu_time = 100 * NANOSECS_PER_MILLISEC;
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EXPECT_TRUE(JfrThreadCPULoadEvent::update_event(event, thread, 400 * NANOSECS_PER_MILLISEC, 1));
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EXPECT_FLOAT_EQ(0.25, event.user);
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EXPECT_FLOAT_EQ(0.25, event.system);
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MockOs::user_cpu_time += 100 * NANOSECS_PER_MILLISEC;
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MockOs::system_cpu_time -= 90 * NANOSECS_PER_MILLISEC;
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EXPECT_TRUE(JfrThreadCPULoadEvent::update_event(event, thread, (400 + 400) * NANOSECS_PER_MILLISEC, 1));
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EXPECT_FLOAT_EQ(0.25, event.user);
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EXPECT_FLOAT_EQ(0, event.system);
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MockOs::user_cpu_time += 100 * NANOSECS_PER_MILLISEC;
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MockOs::system_cpu_time += 90 * NANOSECS_PER_MILLISEC;
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EXPECT_TRUE(JfrThreadCPULoadEvent::update_event(event, thread, (400 + 400 + 400) * NANOSECS_PER_MILLISEC, 1));
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EXPECT_FLOAT_EQ(0.25, event.user);
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EXPECT_FLOAT_EQ(0, event.system);
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}
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