8231210: [BACKOUT] JDK-8207266 ThreadMXBean::getThreadAllocatedBytes() can be quicker for self thread
Reviewed-by: phh, dholmes
--- a/src/hotspot/share/include/jmm.h Wed Sep 18 17:31:35 2019 -0400
+++ b/src/hotspot/share/include/jmm.h Wed Sep 18 20:49:13 2019 -0400
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2003, 2019, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2003, 2017, 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
@@ -239,9 +239,6 @@
jobject (JNICALL *GetMemoryPoolUsage) (JNIEnv* env, jobject pool);
jobject (JNICALL *GetPeakMemoryPoolUsage) (JNIEnv* env, jobject pool);
- jlong (JNICALL *GetOneThreadAllocatedMemory)
- (JNIEnv *env,
- jlong thread_id);
void (JNICALL *GetThreadAllocatedMemory)
(JNIEnv *env,
jlongArray ids,
--- a/src/hotspot/share/services/management.cpp Wed Sep 18 17:31:35 2019 -0400
+++ b/src/hotspot/share/services/management.cpp Wed Sep 18 20:49:13 2019 -0400
@@ -2068,31 +2068,6 @@
}
#endif // INCLUDE_MANAGEMENT
-// Gets the amount of memory allocated on the Java heap for a single thread.
-// Returns -1 if the thread does not exist or has terminated.
-JVM_ENTRY(jlong, jmm_GetOneThreadAllocatedMemory(JNIEnv *env, jlong thread_id))
- if (thread_id < 0) {
- THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(),
- "Invalid thread ID", -1);
- }
-
- if (thread_id == 0) {
- // current thread
- if (THREAD->is_Java_thread()) {
- return ((JavaThread*)THREAD)->cooked_allocated_bytes();
- }
- return -1;
- }
-
- ThreadsListHandle tlh;
- JavaThread* java_thread = tlh.list()->find_JavaThread_from_java_tid(thread_id);
-
- if (java_thread != NULL) {
- return java_thread->cooked_allocated_bytes();
- }
- return -1;
-JVM_END
-
// Gets an array containing the amount of memory allocated on the Java
// heap for a set of threads (in bytes). Each element of the array is
// the amount of memory allocated for the thread ID specified in the
@@ -2217,7 +2192,6 @@
jmm_GetMemoryManagers,
jmm_GetMemoryPoolUsage,
jmm_GetPeakMemoryPoolUsage,
- jmm_GetOneThreadAllocatedMemory,
jmm_GetThreadAllocatedMemory,
jmm_GetMemoryUsage,
jmm_GetLongAttribute,
--- a/src/java.management/share/classes/java/lang/management/ThreadMXBean.java Wed Sep 18 17:31:35 2019 -0400
+++ b/src/java.management/share/classes/java/lang/management/ThreadMXBean.java Wed Sep 18 20:49:13 2019 -0400
@@ -160,7 +160,7 @@
*
* @return an array of {@code long}, each is a thread ID.
*
- * @throws SecurityException if a security manager
+ * @throws java.lang.SecurityException if a security manager
* exists and the caller does not have
* ManagementPermission("monitor").
*/
@@ -199,7 +199,7 @@
* it does not exist.
*
* @throws IllegalArgumentException if {@code id <= 0}.
- * @throws SecurityException if a security manager
+ * @throws java.lang.SecurityException if a security manager
* exists and the caller does not have
* ManagementPermission("monitor").
*/
@@ -237,7 +237,7 @@
*
* @throws IllegalArgumentException if any element in the input array
* {@code ids} is {@code <= 0}.
- * @throws SecurityException if a security manager
+ * @throws java.lang.SecurityException if a security manager
* exists and the caller does not have
* ManagementPermission("monitor").
*/
@@ -284,7 +284,7 @@
*
* @throws IllegalArgumentException if {@code id <= 0}.
* @throws IllegalArgumentException if {@code maxDepth is negative}.
- * @throws SecurityException if a security manager
+ * @throws java.lang.SecurityException if a security manager
* exists and the caller does not have
* ManagementPermission("monitor").
*
@@ -337,7 +337,7 @@
* @throws IllegalArgumentException if {@code maxDepth is negative}.
* @throws IllegalArgumentException if any element in the input array
* {@code ids} is {@code <= 0}.
- * @throws SecurityException if a security manager
+ * @throws java.lang.SecurityException if a security manager
* exists and the caller does not have
* ManagementPermission("monitor").
*
@@ -360,7 +360,7 @@
* @return {@code true} if thread contention monitoring is enabled;
* {@code false} otherwise.
*
- * @throws UnsupportedOperationException if the Java virtual
+ * @throws java.lang.UnsupportedOperationException if the Java virtual
* machine does not support thread contention monitoring.
*
* @see #isThreadContentionMonitoringSupported
@@ -374,10 +374,10 @@
* @param enable {@code true} to enable;
* {@code false} to disable.
*
- * @throws UnsupportedOperationException if the Java
+ * @throws java.lang.UnsupportedOperationException if the Java
* virtual machine does not support thread contention monitoring.
*
- * @throws SecurityException if a security manager
+ * @throws java.lang.SecurityException if a security manager
* exists and the caller does not have
* ManagementPermission("control").
*
@@ -394,7 +394,7 @@
* the current thread has executed in user mode or system mode.
*
* <p>
- * This is a convenience method for local management use and is
+ * This is a convenient method for local management use and is
* equivalent to calling:
* <blockquote><pre>
* {@link #getThreadCpuTime getThreadCpuTime}(Thread.currentThread().getId());
@@ -403,7 +403,7 @@
* @return the total CPU time for the current thread if CPU time
* measurement is enabled; {@code -1} otherwise.
*
- * @throws UnsupportedOperationException if the Java
+ * @throws java.lang.UnsupportedOperationException if the Java
* virtual machine does not support CPU time measurement for
* the current thread.
*
@@ -421,7 +421,7 @@
* not necessarily nanoseconds accuracy.
*
* <p>
- * This is a convenience method for local management use and is
+ * This is a convenient method for local management use and is
* equivalent to calling:
* <blockquote><pre>
* {@link #getThreadUserTime getThreadUserTime}(Thread.currentThread().getId());
@@ -430,7 +430,7 @@
* @return the user-level CPU time for the current thread if CPU time
* measurement is enabled; {@code -1} otherwise.
*
- * @throws UnsupportedOperationException if the Java
+ * @throws java.lang.UnsupportedOperationException if the Java
* virtual machine does not support CPU time measurement for
* the current thread.
*
@@ -467,7 +467,7 @@
* {@code -1} otherwise.
*
* @throws IllegalArgumentException if {@code id <= 0}.
- * @throws UnsupportedOperationException if the Java
+ * @throws java.lang.UnsupportedOperationException if the Java
* virtual machine does not support CPU time measurement for
* other threads.
*
@@ -502,7 +502,7 @@
* {@code -1} otherwise.
*
* @throws IllegalArgumentException if {@code id <= 0}.
- * @throws UnsupportedOperationException if the Java
+ * @throws java.lang.UnsupportedOperationException if the Java
* virtual machine does not support CPU time measurement for
* other threads.
*
@@ -548,7 +548,7 @@
* @return {@code true} if thread CPU time measurement is enabled;
* {@code false} otherwise.
*
- * @throws UnsupportedOperationException if the Java virtual
+ * @throws java.lang.UnsupportedOperationException if the Java virtual
* machine does not support CPU time measurement for other threads
* nor for the current thread.
*
@@ -564,11 +564,11 @@
* @param enable {@code true} to enable;
* {@code false} to disable.
*
- * @throws UnsupportedOperationException if the Java
+ * @throws java.lang.UnsupportedOperationException if the Java
* virtual machine does not support CPU time measurement for
* any threads nor for the current thread.
*
- * @throws SecurityException if a security manager
+ * @throws java.lang.SecurityException if a security manager
* exists and the caller does not have
* ManagementPermission("control").
*
@@ -604,7 +604,7 @@
* @return an array of IDs of the threads that are monitor
* deadlocked, if any; {@code null} otherwise.
*
- * @throws SecurityException if a security manager
+ * @throws java.lang.SecurityException if a security manager
* exists and the caller does not have
* ManagementPermission("monitor").
*
@@ -616,7 +616,7 @@
* Resets the peak thread count to the current number of
* live threads.
*
- * @throws SecurityException if a security manager
+ * @throws java.lang.SecurityException if a security manager
* exists and the caller does not have
* ManagementPermission("control").
*
@@ -642,10 +642,10 @@
* deadlocked waiting for object monitors or ownable synchronizers, if any;
* {@code null} otherwise.
*
- * @throws SecurityException if a security manager
+ * @throws java.lang.SecurityException if a security manager
* exists and the caller does not have
* ManagementPermission("monitor").
- * @throws UnsupportedOperationException if the Java virtual
+ * @throws java.lang.UnsupportedOperationException if the Java virtual
* machine does not support monitoring of ownable synchronizer usage.
*
* @see #isSynchronizerUsageSupported
@@ -704,10 +704,10 @@
* information about a thread whose ID is in the corresponding
* element of the input array of IDs.
*
- * @throws SecurityException if a security manager
+ * @throws java.lang.SecurityException if a security manager
* exists and the caller does not have
* ManagementPermission("monitor").
- * @throws UnsupportedOperationException
+ * @throws java.lang.UnsupportedOperationException
* <ul>
* <li>if {@code lockedMonitors} is {@code true} but
* the Java virtual machine does not support monitoring
@@ -794,10 +794,10 @@
* element of the input array of IDs.
*
* @throws IllegalArgumentException if {@code maxDepth} is negative.
- * @throws SecurityException if a security manager
+ * @throws java.lang.SecurityException if a security manager
* exists and the caller does not have
* ManagementPermission("monitor").
- * @throws UnsupportedOperationException
+ * @throws java.lang.UnsupportedOperationException
* <ul>
* <li>if {@code lockedMonitors} is {@code true} but
* the Java virtual machine does not support monitoring
@@ -835,10 +835,10 @@
*
* @return an array of {@link ThreadInfo} for all live threads.
*
- * @throws SecurityException if a security manager
+ * @throws java.lang.SecurityException if a security manager
* exists and the caller does not have
* ManagementPermission("monitor").
- * @throws UnsupportedOperationException
+ * @throws java.lang.UnsupportedOperationException
* <ul>
* <li>if {@code lockedMonitors} is {@code true} but
* the Java virtual machine does not support monitoring
@@ -884,10 +884,10 @@
* @return an array of {@link ThreadInfo} for all live threads.
*
* @throws IllegalArgumentException if {@code maxDepth} is negative.
- * @throws SecurityException if a security manager
+ * @throws java.lang.SecurityException if a security manager
* exists and the caller does not have
* ManagementPermission("monitor").
- * @throws UnsupportedOperationException
+ * @throws java.lang.UnsupportedOperationException
* <ul>
* <li>if {@code lockedMonitors} is {@code true} but
* the Java virtual machine does not support monitoring
--- a/src/java.management/share/classes/sun/management/ThreadImpl.java Wed Sep 18 17:31:35 2019 -0400
+++ b/src/java.management/share/classes/sun/management/ThreadImpl.java Wed Sep 18 20:49:13 2019 -0400
@@ -29,7 +29,6 @@
import java.lang.management.ThreadInfo;
import java.lang.management.ThreadMXBean;
import javax.management.ObjectName;
-import java.util.Objects;
/**
* Implementation for java.lang.management.ThreadMXBean as well as providing the
@@ -113,15 +112,11 @@
return cpuTimeEnabled;
}
- private void ensureThreadAllocatedMemorySupported() {
+ protected boolean isThreadAllocatedMemoryEnabled() {
if (!isThreadAllocatedMemorySupported()) {
throw new UnsupportedOperationException(
- "Thread allocated memory measurement is not supported.");
+ "Thread allocated memory measurement is not supported");
}
- }
-
- protected boolean isThreadAllocatedMemoryEnabled() {
- ensureThreadAllocatedMemorySupported();
return allocatedMemoryEnabled;
}
@@ -160,18 +155,16 @@
return getThreadInfo(ids, 0);
}
- private void verifyThreadId(long id) {
- if (id <= 0) {
- throw new IllegalArgumentException(
- "Invalid thread ID parameter: " + id);
+ private void verifyThreadIds(long[] ids) {
+ if (ids == null) {
+ throw new NullPointerException("Null ids parameter.");
}
- }
-
- private void verifyThreadIds(long[] ids) {
- Objects.requireNonNull(ids);
for (int i = 0; i < ids.length; i++) {
- verifyThreadId(ids[i]);
+ if (ids[i] <= 0) {
+ throw new IllegalArgumentException(
+ "Invalid thread ID parameter: " + ids[i]);
+ }
}
}
@@ -349,41 +342,26 @@
}
}
- protected long getCurrentThreadAllocatedBytes() {
- if (isThreadAllocatedMemoryEnabled()) {
- return getThreadAllocatedMemory0(0);
- }
- return -1;
- }
-
- private boolean verifyThreadAllocatedMemory(long id) {
- verifyThreadId(id);
- return isThreadAllocatedMemoryEnabled();
- }
-
protected long getThreadAllocatedBytes(long id) {
- boolean verified = verifyThreadAllocatedMemory(id);
-
- if (verified) {
- return getThreadAllocatedMemory0(
- Thread.currentThread().getId() == id ? 0 : id);
- }
- return -1;
+ long[] ids = new long[1];
+ ids[0] = id;
+ final long[] sizes = getThreadAllocatedBytes(ids);
+ return sizes[0];
}
private boolean verifyThreadAllocatedMemory(long[] ids) {
verifyThreadIds(ids);
+
+ // check if Thread allocated memory measurement is supported.
+ if (!isThreadAllocatedMemorySupported()) {
+ throw new UnsupportedOperationException(
+ "Thread allocated memory measurement is not supported.");
+ }
+
return isThreadAllocatedMemoryEnabled();
}
protected long[] getThreadAllocatedBytes(long[] ids) {
- Objects.requireNonNull(ids);
-
- if (ids.length == 1) {
- long size = getThreadAllocatedBytes(ids[0]);
- return new long[] { size };
- }
-
boolean verified = verifyThreadAllocatedMemory(ids);
long[] sizes = new long[ids.length];
@@ -396,7 +374,10 @@
}
protected void setThreadAllocatedMemoryEnabled(boolean enable) {
- ensureThreadAllocatedMemorySupported();
+ if (!isThreadAllocatedMemorySupported()) {
+ throw new UnsupportedOperationException(
+ "Thread allocated memory measurement is not supported.");
+ }
Util.checkControlAccess();
synchronized (this) {
@@ -530,7 +511,6 @@
private static native void getThreadTotalCpuTime1(long[] ids, long[] result);
private static native long getThreadUserCpuTime0(long id);
private static native void getThreadUserCpuTime1(long[] ids, long[] result);
- private static native long getThreadAllocatedMemory0(long id);
private static native void getThreadAllocatedMemory1(long[] ids, long[] result);
private static native void setThreadCpuTimeEnabled0(boolean enable);
private static native void setThreadAllocatedMemoryEnabled0(boolean enable);
--- a/src/java.management/share/native/libmanagement/ThreadImpl.c Wed Sep 18 17:31:35 2019 -0400
+++ b/src/java.management/share/native/libmanagement/ThreadImpl.c Wed Sep 18 20:49:13 2019 -0400
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2003, 2019, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2003, 2017, 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
@@ -94,13 +94,6 @@
JNI_FALSE /* user */);
}
-JNIEXPORT jlong JNICALL
-Java_sun_management_ThreadImpl_getThreadAllocatedMemory0
- (JNIEnv *env, jclass cls, jlong tid)
-{
- return jmm_interface->GetOneThreadAllocatedMemory(env, tid);
-}
-
JNIEXPORT void JNICALL
Java_sun_management_ThreadImpl_getThreadAllocatedMemory1
(JNIEnv *env, jclass cls, jlongArray ids, jlongArray sizeArray)
--- a/src/jdk.management/share/classes/com/sun/management/ThreadMXBean.java Wed Sep 18 17:31:35 2019 -0400
+++ b/src/jdk.management/share/classes/com/sun/management/ThreadMXBean.java Wed Sep 18 20:49:13 2019 -0400
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2011, 2019, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2011, 2013, 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
@@ -61,7 +61,7 @@
* @throws NullPointerException if {@code ids} is {@code null}
* @throws IllegalArgumentException if any element in the input array
* {@code ids} is {@code <=} {@code 0}.
- * @throws UnsupportedOperationException if the Java
+ * @throws java.lang.UnsupportedOperationException if the Java
* virtual machine implementation does not support CPU time
* measurement.
*
@@ -95,7 +95,7 @@
* @throws NullPointerException if {@code ids} is {@code null}
* @throws IllegalArgumentException if any element in the input array
* {@code ids} is {@code <=} {@code 0}.
- * @throws UnsupportedOperationException if the Java
+ * @throws java.lang.UnsupportedOperationException if the Java
* virtual machine implementation does not support CPU time
* measurement.
*
@@ -109,44 +109,13 @@
/**
* Returns an approximation of the total amount of memory, in bytes,
- * allocated in heap memory for the current thread.
- * The returned value is an approximation because some Java virtual machine
- * implementations may use object allocation mechanisms that result in a
- * delay between the time an object is allocated and the time its size is
- * recorded.
- *
- * <p>
- * This is a convenience method for local management use and is
- * equivalent to calling:
- * <blockquote><pre>
- * {@link #getThreadAllocatedBytes getThreadAllocatedBytes}(Thread.currentThread().getId());
- * </pre></blockquote>
- *
- * @return an approximation of the total memory allocated, in bytes, in
- * heap memory for the current thread
- * if thread memory allocation measurement is enabled;
- * {@code -1} otherwise.
- *
- * @throws UnsupportedOperationException if the Java virtual
- * machine implementation does not support thread memory allocation
- * measurement.
- *
- * @see #isThreadAllocatedMemorySupported
- * @see #isThreadAllocatedMemoryEnabled
- * @see #setThreadAllocatedMemoryEnabled
- * @since 14
- */
- public long getCurrentThreadAllocatedBytes();
-
- /**
- * Returns an approximation of the total amount of memory, in bytes,
- * allocated in heap memory for the thread with the specified ID.
+ * allocated in heap memory for the thread of the specified ID.
* The returned value is an approximation because some Java virtual machine
* implementations may use object allocation mechanisms that result in a
* delay between the time an object is allocated and the time its size is
* recorded.
* <p>
- * If the thread with the specified ID is not alive or does not exist,
+ * If the thread of the specified ID is not alive or does not exist,
* this method returns {@code -1}. If thread memory allocation measurement
* is disabled, this method returns {@code -1}.
* A thread is alive if it has been started and has not yet died.
@@ -158,13 +127,13 @@
*
* @param id the thread ID of a thread
* @return an approximation of the total memory allocated, in bytes, in
- * heap memory for the thread with the specified ID
- * if the thread with the specified ID exists, the thread is alive,
+ * heap memory for a thread of the specified ID
+ * if the thread of the specified ID exists, the thread is alive,
* and thread memory allocation measurement is enabled;
* {@code -1} otherwise.
*
* @throws IllegalArgumentException if {@code id} {@code <=} {@code 0}.
- * @throws UnsupportedOperationException if the Java virtual
+ * @throws java.lang.UnsupportedOperationException if the Java virtual
* machine implementation does not support thread memory allocation
* measurement.
*
@@ -196,7 +165,7 @@
* @throws NullPointerException if {@code ids} is {@code null}
* @throws IllegalArgumentException if any element in the input array
* {@code ids} is {@code <=} {@code 0}.
- * @throws UnsupportedOperationException if the Java virtual
+ * @throws java.lang.UnsupportedOperationException if the Java virtual
* machine implementation does not support thread memory allocation
* measurement.
*
@@ -225,7 +194,7 @@
* @return {@code true} if thread memory allocation measurement is enabled;
* {@code false} otherwise.
*
- * @throws UnsupportedOperationException if the Java virtual
+ * @throws java.lang.UnsupportedOperationException if the Java virtual
* machine does not support thread memory allocation measurement.
*
* @see #isThreadAllocatedMemorySupported
@@ -239,10 +208,10 @@
* @param enable {@code true} to enable;
* {@code false} to disable.
*
- * @throws UnsupportedOperationException if the Java virtual
+ * @throws java.lang.UnsupportedOperationException if the Java virtual
* machine does not support thread memory allocation measurement.
*
- * @throws SecurityException if a security manager
+ * @throws java.lang.SecurityException if a security manager
* exists and the caller does not have
* ManagementPermission("control").
*
--- a/src/jdk.management/share/classes/com/sun/management/internal/HotSpotThreadImpl.java Wed Sep 18 17:31:35 2019 -0400
+++ b/src/jdk.management/share/classes/com/sun/management/internal/HotSpotThreadImpl.java Wed Sep 18 20:49:13 2019 -0400
@@ -58,11 +58,6 @@
}
@Override
- public long getCurrentThreadAllocatedBytes() {
- return super.getCurrentThreadAllocatedBytes();
- }
-
- @Override
public long getThreadAllocatedBytes(long id) {
return super.getThreadAllocatedBytes(id);
}
--- a/test/jdk/com/sun/management/ThreadMXBean/ThreadAllocatedMemory.java Wed Sep 18 17:31:35 2019 -0400
+++ b/test/jdk/com/sun/management/ThreadMXBean/ThreadAllocatedMemory.java Wed Sep 18 20:49:13 2019 -0400
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2011, 2019, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2011, 2015, 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
@@ -23,7 +23,7 @@
/*
* @test
- * @bug 6173675 8207266
+ * @bug 6173675
* @summary Basic test of ThreadMXBean.getThreadAllocatedBytes
* @author Paul Hohensee
*/
@@ -33,8 +33,9 @@
public class ThreadAllocatedMemory {
private static com.sun.management.ThreadMXBean mbean =
(com.sun.management.ThreadMXBean)ManagementFactory.getThreadMXBean();
- private static volatile boolean done = false;
- private static volatile boolean done1 = false;
+ private static boolean testFailed = false;
+ private static boolean done = false;
+ private static boolean done1 = false;
private static Object obj = new Object();
private static final int NUM_THREADS = 10;
private static Thread[] threads = new Thread[NUM_THREADS];
@@ -43,22 +44,6 @@
public static void main(String[] argv)
throws Exception {
- testSupportEnableDisable();
-
- // Test current thread two ways
- testGetCurrentThreadAllocatedBytes();
- testCurrentThreadGetThreadAllocatedBytes();
-
- // Test a single thread that is not this one
- testGetThreadAllocatedBytes();
-
- // Test many threads that are not this one
- testGetThreadsAllocatedBytes();
-
- System.out.println("Test passed");
- }
-
- private static void testSupportEnableDisable() {
if (!mbean.isThreadAllocatedMemorySupported()) {
return;
}
@@ -73,7 +58,10 @@
"ThreadAllocatedMemory is expected to be disabled");
}
- long s = mbean.getCurrentThreadAllocatedBytes();
+ Thread curThread = Thread.currentThread();
+ long id = curThread.getId();
+
+ long s = mbean.getThreadAllocatedBytes(id);
if (s != -1) {
throw new RuntimeException(
"Invalid ThreadAllocatedBytes returned = " +
@@ -89,106 +77,63 @@
throw new RuntimeException(
"ThreadAllocatedMemory is expected to be enabled");
}
- }
-
- private static void testGetCurrentThreadAllocatedBytes() {
- long size = mbean.getCurrentThreadAllocatedBytes();
- ensureValidSize(size);
-
- // do some more allocation
- doit();
-
- checkResult(Thread.currentThread(), size,
- mbean.getCurrentThreadAllocatedBytes());
- }
-
- private static void testCurrentThreadGetThreadAllocatedBytes() {
- Thread curThread = Thread.currentThread();
- long id = curThread.getId();
long size = mbean.getThreadAllocatedBytes(id);
- ensureValidSize(size);
+ // implementation could have started measurement when
+ // measurement was enabled, in which case size can be 0
+ if (size < 0) {
+ throw new RuntimeException(
+ "Invalid allocated bytes returned = " + size);
+ }
- // do some more allocation
doit();
- checkResult(curThread, size, mbean.getThreadAllocatedBytes(id));
- }
+ // Expected to be size1 >= size
+ long size1 = mbean.getThreadAllocatedBytes(id);
+ if (size1 < size) {
+ throw new RuntimeException("Allocated bytes " + size1 +
+ " expected >= " + size);
+ }
+ System.out.println(curThread.getName() +
+ " Current thread allocated bytes = " + size +
+ " allocated bytes = " + size1);
- private static void testGetThreadAllocatedBytes()
- throws Exception {
- // start a thread
- done = false; done1 = false;
- Thread curThread = new MyThread("MyThread");
- curThread.start();
- long id = curThread.getId();
+ // start threads, wait for them to block
+ for (int i = 0; i < NUM_THREADS; i++) {
+ threads[i] = new MyThread("MyThread-" + i);
+ threads[i].start();
+ }
- // wait for thread to block after doing some allocation
- waitUntilThreadBlocked(curThread);
+ // threads block after doing some allocation
+ waitUntilThreadBlocked();
- long size = mbean.getThreadAllocatedBytes(id);
- ensureValidSize(size);
+ for (int i = 0; i < NUM_THREADS; i++) {
+ sizes[i] = mbean.getThreadAllocatedBytes(threads[i].getId());
+ }
- // let thread go to do some more allocation
+ // let threads go and do some more allocation
synchronized (obj) {
done = true;
obj.notifyAll();
}
- // wait for thread to get going again. we don't care if we
- // catch it in mid-execution or if it hasn't
- // restarted after we're done sleeping.
- goSleep(400);
-
- checkResult(curThread, size, mbean.getThreadAllocatedBytes(id));
-
- // let thread exit
- synchronized (obj) {
- done1 = true;
- obj.notifyAll();
- }
-
- try {
- curThread.join();
- } catch (InterruptedException e) {
- System.out.println("Unexpected exception is thrown.");
- e.printStackTrace(System.out);
- }
- }
-
- private static void testGetThreadsAllocatedBytes()
- throws Exception {
-
- // start threads
- done = false; done1 = false;
- for (int i = 0; i < NUM_THREADS; i++) {
- threads[i] = new MyThread("MyThread-" + i);
- threads[i].start();
- }
-
- // wait for threads to block after doing some allocation
- waitUntilThreadsBlocked();
-
- for (int i = 0; i < NUM_THREADS; i++) {
- sizes[i] = mbean.getThreadAllocatedBytes(threads[i].getId());
- ensureValidSize(sizes[i]);
- }
-
- // let threads go to do some more allocation
- synchronized (obj) {
- done = true;
- obj.notifyAll();
- }
-
- // wait for threads to get going again. we don't care if we
+ // wait for threads to get going again. we don't care if we
// catch them in mid-execution or if some of them haven't
// restarted after we're done sleeping.
goSleep(400);
for (int i = 0; i < NUM_THREADS; i++) {
- checkResult(threads[i], sizes[i],
- mbean.getThreadAllocatedBytes(threads[i].getId()));
+ long newSize = mbean.getThreadAllocatedBytes(threads[i].getId());
+ if (sizes[i] > newSize) {
+ throw new RuntimeException("TEST FAILED: " +
+ threads[i].getName() +
+ " previous allocated bytes = " + sizes[i] +
+ " > current allocated bytes = " + newSize);
+ }
+ System.out.println(threads[i].getName() +
+ " Previous allocated bytes = " + sizes[i] +
+ " Current allocated bytes = " + newSize);
}
// let threads exit
@@ -203,30 +148,17 @@
} catch (InterruptedException e) {
System.out.println("Unexpected exception is thrown.");
e.printStackTrace(System.out);
+ testFailed = true;
break;
}
}
- }
+ if (testFailed) {
+ throw new RuntimeException("TEST FAILED");
+ }
- private static void ensureValidSize(long size) {
- // implementation could have started measurement when
- // measurement was enabled, in which case size can be 0
- if (size < 0) {
- throw new RuntimeException(
- "Invalid allocated bytes returned = " + size);
- }
+ System.out.println("Test passed");
}
- private static void checkResult(Thread curThread,
- long prev_size, long curr_size) {
- if (curr_size < prev_size) {
- throw new RuntimeException("Allocated bytes " + curr_size +
- " expected >= " + prev_size);
- }
- System.out.println(curThread.getName() +
- " Previous allocated bytes = " + prev_size +
- " Current allocated bytes = " + curr_size);
- }
private static void goSleep(long ms) throws Exception {
try {
@@ -237,18 +169,7 @@
}
}
- private static void waitUntilThreadBlocked(Thread thread)
- throws Exception {
- while (true) {
- goSleep(100);
- ThreadInfo info = mbean.getThreadInfo(thread.getId());
- if (info.getThreadState() == Thread.State.WAITING) {
- break;
- }
- }
- }
-
- private static void waitUntilThreadsBlocked()
+ private static void waitUntilThreadBlocked()
throws Exception {
int count = 0;
while (count != NUM_THREADS) {
@@ -289,6 +210,7 @@
} catch (InterruptedException e) {
System.out.println("Unexpected exception is thrown.");
e.printStackTrace(System.out);
+ testFailed = true;
break;
}
}
@@ -303,7 +225,7 @@
" ThreadAllocatedBytes = " + size2);
if (size1 > size2) {
- throw new RuntimeException(getName() +
+ throw new RuntimeException("TEST FAILED: " + getName() +
" ThreadAllocatedBytes = " + size1 +
" > ThreadAllocatedBytes = " + size2);
}
@@ -315,6 +237,7 @@
} catch (InterruptedException e) {
System.out.println("Unexpected exception is thrown.");
e.printStackTrace(System.out);
+ testFailed = true;
break;
}
}