--- a/hotspot/src/share/vm/prims/whitebox.cpp Fri Nov 08 07:13:57 2013 -0800
+++ b/hotspot/src/share/vm/prims/whitebox.cpp Fri Nov 08 23:49:20 2013 +0000
@@ -53,6 +53,8 @@
#include "compiler/compileBroker.hpp"
#include "runtime/compilationPolicy.hpp"
+#define SIZE_T_MAX_VALUE ((size_t) -1)
+
bool WhiteBox::_used = false;
WB_ENTRY(jlong, WB_GetObjectAddress(JNIEnv* env, jobject o, jobject obj))
@@ -109,6 +111,112 @@
}
WB_END
+#ifndef PRODUCT
+// Forward declaration
+void TestReservedSpace_test();
+void TestReserveMemorySpecial_test();
+void TestVirtualSpace_test();
+void TestMetaspaceAux_test();
+#endif
+
+WB_ENTRY(void, WB_RunMemoryUnitTests(JNIEnv* env, jobject o))
+#ifndef PRODUCT
+ TestReservedSpace_test();
+ TestReserveMemorySpecial_test();
+ TestVirtualSpace_test();
+ TestMetaspaceAux_test();
+#endif
+WB_END
+
+WB_ENTRY(void, WB_ReadFromNoaccessArea(JNIEnv* env, jobject o))
+ size_t granularity = os::vm_allocation_granularity();
+ ReservedHeapSpace rhs(100 * granularity, granularity, false, NULL);
+ VirtualSpace vs;
+ vs.initialize(rhs, 50 * granularity);
+
+ //Check if constraints are complied
+ if (!( UseCompressedOops && rhs.base() != NULL &&
+ Universe::narrow_oop_base() != NULL &&
+ Universe::narrow_oop_use_implicit_null_checks() )) {
+ tty->print_cr("WB_ReadFromNoaccessArea method is useless:\n "
+ "\tUseCompressedOops is %d\n"
+ "\trhs.base() is "PTR_FORMAT"\n"
+ "\tUniverse::narrow_oop_base() is "PTR_FORMAT"\n"
+ "\tUniverse::narrow_oop_use_implicit_null_checks() is %d",
+ UseCompressedOops,
+ rhs.base(),
+ Universe::narrow_oop_base(),
+ Universe::narrow_oop_use_implicit_null_checks());
+ return;
+ }
+ tty->print_cr("Reading from no access area... ");
+ tty->print_cr("*(vs.low_boundary() - rhs.noaccess_prefix() / 2 ) = %c",
+ *(vs.low_boundary() - rhs.noaccess_prefix() / 2 ));
+WB_END
+
+static jint wb_stress_virtual_space_resize(size_t reserved_space_size,
+ size_t magnitude, size_t iterations) {
+ size_t granularity = os::vm_allocation_granularity();
+ ReservedHeapSpace rhs(reserved_space_size * granularity, granularity, false, NULL);
+ VirtualSpace vs;
+ if (!vs.initialize(rhs, 0)) {
+ tty->print_cr("Failed to initialize VirtualSpace. Can't proceed.");
+ return 3;
+ }
+
+ long seed = os::random();
+ tty->print_cr("Random seed is %ld", seed);
+ os::init_random(seed);
+
+ for (size_t i = 0; i < iterations; i++) {
+
+ // Whether we will shrink or grow
+ bool shrink = os::random() % 2L == 0;
+
+ // Get random delta to resize virtual space
+ size_t delta = (size_t)os::random() % magnitude;
+
+ // If we are about to shrink virtual space below zero, then expand instead
+ if (shrink && vs.committed_size() < delta) {
+ shrink = false;
+ }
+
+ // Resizing by delta
+ if (shrink) {
+ vs.shrink_by(delta);
+ } else {
+ // If expanding fails expand_by will silently return false
+ vs.expand_by(delta, true);
+ }
+ }
+ return 0;
+}
+
+WB_ENTRY(jint, WB_StressVirtualSpaceResize(JNIEnv* env, jobject o,
+ jlong reserved_space_size, jlong magnitude, jlong iterations))
+ tty->print_cr("reservedSpaceSize="JLONG_FORMAT", magnitude="JLONG_FORMAT", "
+ "iterations="JLONG_FORMAT"\n", reserved_space_size, magnitude,
+ iterations);
+ if (reserved_space_size < 0 || magnitude < 0 || iterations < 0) {
+ tty->print_cr("One of variables printed above is negative. Can't proceed.\n");
+ return 1;
+ }
+
+ // sizeof(size_t) depends on whether OS is 32bit or 64bit. sizeof(jlong) is
+ // always 8 byte. That's why we should avoid overflow in case of 32bit platform.
+ if (sizeof(size_t) < sizeof(jlong)) {
+ jlong size_t_max_value = (jlong) SIZE_T_MAX_VALUE;
+ if (reserved_space_size > size_t_max_value || magnitude > size_t_max_value
+ || iterations > size_t_max_value) {
+ tty->print_cr("One of variables printed above overflows size_t. Can't proceed.\n");
+ return 2;
+ }
+ }
+
+ return wb_stress_virtual_space_resize((size_t) reserved_space_size,
+ (size_t) magnitude, (size_t) iterations);
+WB_END
+
#if INCLUDE_ALL_GCS
WB_ENTRY(jboolean, WB_G1IsHumongous(JNIEnv* env, jobject o, jobject obj))
G1CollectedHeap* g1 = G1CollectedHeap::heap();
@@ -445,6 +553,9 @@
{CC"getCompressedOopsMaxHeapSize", CC"()J",
(void*)&WB_GetCompressedOopsMaxHeapSize},
{CC"printHeapSizes", CC"()V", (void*)&WB_PrintHeapSizes },
+ {CC"runMemoryUnitTests", CC"()V", (void*)&WB_RunMemoryUnitTests},
+ {CC"readFromNoaccessArea",CC"()V", (void*)&WB_ReadFromNoaccessArea},
+ {CC"stressVirtualSpaceResize",CC"(JJJ)I", (void*)&WB_StressVirtualSpaceResize},
#if INCLUDE_ALL_GCS
{CC"g1InConcurrentMark", CC"()Z", (void*)&WB_G1InConcurrentMark},
{CC"g1IsHumongous", CC"(Ljava/lang/Object;)Z", (void*)&WB_G1IsHumongous },
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/test/runtime/memory/ReadFromNoaccessArea.java Fri Nov 08 23:49:20 2013 +0000
@@ -0,0 +1,80 @@
+/*
+ * Copyright (c) 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
+ * 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.
+ */
+
+/*
+ * @test
+ * @summary Test that touching noaccess area in class ReservedHeapSpace results in SIGSEGV/ACCESS_VIOLATION
+ * @library /testlibrary /testlibrary/whitebox
+ * @build ReadFromNoaccessArea
+ * @run main ClassFileInstaller sun.hotspot.WhiteBox
+ * @run main ReadFromNoaccessArea
+ */
+
+import com.oracle.java.testlibrary.*;
+import sun.hotspot.WhiteBox;
+
+public class ReadFromNoaccessArea {
+
+ public static void main(String args[]) throws Exception {
+ if (!Platform.is64bit()) {
+ System.out.println("ReadFromNoaccessArea tests is useful only on 64bit architecture. Passing silently.");
+ return;
+ }
+
+ ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
+ "-Xbootclasspath/a:.",
+ "-XX:+UnlockDiagnosticVMOptions",
+ "-XX:+WhiteBoxAPI",
+ "-XX:+UseCompressedOops",
+ "-XX:HeapBaseMinAddress=33G",
+ DummyClassWithMainTryingToReadFromNoaccessArea.class.getName());
+
+ OutputAnalyzer output = new OutputAnalyzer(pb.start());
+ System.out.println("******* Printing stdout for analysis in case of failure *******");
+ System.out.println(output.getStdout());
+ System.out.println("******* Printing stderr for analysis in case of failure *******");
+ System.out.println(output.getStderr());
+ System.out.println("***************************************************************");
+ if (output.getStdout() != null && output.getStdout().contains("WB_ReadFromNoaccessArea method is useless")) {
+ // Test conditions broken. There is no protected page in ReservedHeapSpace in these circumstances. Silently passing test.
+ return;
+ }
+ if (Platform.isWindows()) {
+ output.shouldContain("EXCEPTION_ACCESS_VIOLATION");
+ } else if (Platform.isOSX()) {
+ output.shouldContain("SIGBUS");
+ } else {
+ output.shouldContain("SIGSEGV");
+ }
+ }
+
+ public static class DummyClassWithMainTryingToReadFromNoaccessArea {
+
+ // This method calls whitebox method reading from noaccess area
+ public static void main(String args[]) throws Exception {
+ WhiteBox.getWhiteBox().readFromNoaccessArea();
+ throw new Exception("Call of readFromNoaccessArea succeeded! This is wrong. Crash expected. Test failed.");
+ }
+ }
+
+}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/test/runtime/memory/RunUnitTestsConcurrently.java Fri Nov 08 23:49:20 2013 +0000
@@ -0,0 +1,74 @@
+/*
+ * Copyright (c) 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
+ * 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.
+ */
+
+/*
+ * @test
+ * @summary Test launches unit tests inside vm concurrently
+ * @library /testlibrary /testlibrary/whitebox
+ * @build RunUnitTestsConcurrently
+ * @run main ClassFileInstaller sun.hotspot.WhiteBox
+ * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI RunUnitTestsConcurrently 30 15000
+ */
+
+import com.oracle.java.testlibrary.*;
+import sun.hotspot.WhiteBox;
+
+public class RunUnitTestsConcurrently {
+
+ private static WhiteBox wb;
+ private static long timeout;
+ private static long timeStamp;
+
+ public static class Worker implements Runnable {
+ @Override
+ public void run() {
+ while (System.currentTimeMillis() - timeStamp < timeout) {
+ WhiteBox.getWhiteBox().runMemoryUnitTests();
+ }
+ }
+ }
+
+ public static void main(String[] args) throws InterruptedException {
+ if (!Platform.isDebugBuild() || !Platform.is64bit()) {
+ return;
+ }
+ wb = WhiteBox.getWhiteBox();
+ System.out.println("Starting threads");
+
+ int threads = Integer.valueOf(args[0]);
+ timeout = Long.valueOf(args[1]);
+
+ timeStamp = System.currentTimeMillis();
+
+ Thread[] threadsArray = new Thread[threads];
+ for (int i = 0; i < threads; i++) {
+ threadsArray[i] = new Thread(new Worker());
+ threadsArray[i].start();
+ }
+ for (int i = 0; i < threads; i++) {
+ threadsArray[i].join();
+ }
+
+ System.out.println("Quitting test.");
+ }
+}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/test/runtime/memory/StressVirtualSpaceResize.java Fri Nov 08 23:49:20 2013 +0000
@@ -0,0 +1,41 @@
+/*
+ * Copyright (c) 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
+ * 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.
+ */
+
+/*
+ * @test
+ * @summary Stress test that expands/shrinks VirtualSpace
+ * @library /testlibrary /testlibrary/whitebox
+ * @build StressVirtualSpaceResize
+ * @run main ClassFileInstaller sun.hotspot.WhiteBox
+ * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI StressVirtualSpaceResize
+ */
+
+import sun.hotspot.WhiteBox;
+
+public class StressVirtualSpaceResize {
+
+ public static void main(String args[]) throws Exception {
+ if (WhiteBox.getWhiteBox().stressVirtualSpaceResize(1000, 0xffffL, 0xffffL) != 0)
+ throw new RuntimeException("Whitebox method stressVirtualSpaceResize returned non zero exit code");
+ }
+}
--- a/hotspot/test/testlibrary/whitebox/sun/hotspot/WhiteBox.java Fri Nov 08 07:13:57 2013 -0800
+++ b/hotspot/test/testlibrary/whitebox/sun/hotspot/WhiteBox.java Fri Nov 08 23:49:20 2013 +0000
@@ -144,4 +144,10 @@
// force Full GC
public native void fullGC();
+
+ // Tests on ReservedSpace/VirtualSpace classes
+ public native int stressVirtualSpaceResize(long reservedSpaceSize, long magnitude, long iterations);
+ public native void runMemoryUnitTests();
+ public native void readFromNoaccessArea();
+
}