--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/test/hotspot/jtreg/vmTestbase/nsk/jvmti/scenarios/contention/TC03/tc03t001/tc03t001.cpp Tue Aug 28 14:37:34 2018 -0700
@@ -0,0 +1,280 @@
+/*
+ * Copyright (c) 2004, 2018, 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 <stdlib.h>
+#include <string.h>
+#include "jni_tools.h"
+#include "agent_common.h"
+#include "jvmti_tools.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef struct {
+ jthread thread;
+ char* name;
+ int dfn;
+} threadDesc;
+
+/* ========================================================================== */
+
+/* scaffold objects */
+static jlong timeout = 0;
+
+/* test objects */
+static threadDesc *threadList = NULL;
+static jint threads_count = 0;
+static int numberOfDeadlocks = 0;
+
+/* ========================================================================== */
+
+static int printDeadlock(jvmtiEnv* jvmti, JNIEnv* jni, int dThread) {
+ jobject monitor = NULL;
+ jclass klass = NULL;
+ jvmtiMonitorUsage usageInfo;
+ int pThread, cThread;
+ char* name;
+
+ NSK_DISPLAY1("Found deadlock #%d:\n", numberOfDeadlocks);
+ for (pThread = dThread;;pThread = cThread) {
+ NSK_DISPLAY1(" \"%s\":\n", threadList[pThread].name);
+ if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB3(GetCurrentContendedMonitor,
+ jvmti, threadList[pThread].thread, &monitor)))
+ return NSK_FALSE;
+ if (monitor != NULL) {
+ if (!NSK_JNI_VERIFY(jni, (klass =
+ NSK_CPP_STUB2(GetObjectClass, jni, monitor)) != NULL))
+ return NSK_FALSE;
+ if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB4(
+ GetClassSignature, jvmti, klass, &name, NULL)))
+ return NSK_FALSE;
+ NSK_DISPLAY2(" waiting to lock %p (%s),\n", monitor, name);
+ NSK_CPP_STUB2(Deallocate, jvmti, (unsigned char*)name);
+ } else {
+ NSK_DISPLAY0(" (JVMTI raw monitor),\n");
+ }
+ if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB3(GetObjectMonitorUsage,
+ jvmti, monitor, &usageInfo)))
+ return NSK_FALSE;
+ if (usageInfo.owner == NULL)
+ break;
+ for (cThread = 0; cThread < threads_count; cThread++) {
+ if (NSK_CPP_STUB3(IsSameObject, jni,
+ threadList[cThread].thread, usageInfo.owner))
+ break;
+ }
+ if (usageInfo.waiters != NULL) {
+ NSK_CPP_STUB2(Deallocate, jvmti,
+ (unsigned char*)usageInfo.waiters);
+ }
+ if (usageInfo.notify_waiters != NULL) {
+ NSK_CPP_STUB2(Deallocate, jvmti,
+ (unsigned char*)usageInfo.notify_waiters);
+ }
+ if (!NSK_VERIFY(cThread != threads_count))
+ return NSK_FALSE;
+ NSK_DISPLAY1(" which is held by \"%s\"\n",
+ threadList[cThread].name);
+ if (cThread == dThread)
+ break;
+ }
+
+ return NSK_TRUE;
+}
+
+static int findDeadlockThreads(jvmtiEnv* jvmti, JNIEnv* jni) {
+ jvmtiThreadInfo info;
+ jthread *threads = NULL;
+ jobject monitor = NULL;
+ jvmtiMonitorUsage usageInfo;
+ int tDfn = 0, gDfn = 0;
+ int pThread, cThread;
+ int i;
+
+ NSK_DISPLAY0("Create threadList\n");
+
+ /* get all live threads */
+ if (!NSK_JVMTI_VERIFY(
+ NSK_CPP_STUB3(GetAllThreads, jvmti, &threads_count, &threads)))
+ return NSK_FALSE;
+
+ if (!NSK_VERIFY(threads_count > 0 && threads != NULL))
+ return NSK_FALSE;
+
+ if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB3(Allocate, jvmti,
+ threads_count*sizeof(threadDesc), (unsigned char**)&threadList)))
+ return NSK_FALSE;
+
+ for (i = 0; i < threads_count; i++) {
+ if (!NSK_VERIFY(threads[i] != NULL))
+ return NSK_FALSE;
+
+ /* get thread information */
+ if (!NSK_JVMTI_VERIFY(
+ NSK_CPP_STUB3(GetThreadInfo, jvmti, threads[i], &info)))
+ return NSK_FALSE;
+
+ NSK_DISPLAY3(" thread #%d (%s): %p\n", i, info.name, threads[i]);
+
+ threadList[i].thread = threads[i];
+ threadList[i].dfn = -1;
+ threadList[i].name = info.name;
+ }
+
+ /* deallocate thread list */
+ if (!NSK_JVMTI_VERIFY(
+ NSK_CPP_STUB2(Deallocate, jvmti, (unsigned char*)threads)))
+ return NSK_FALSE;
+
+ for (i = 0; i < threads_count; i++) {
+ if (threadList[i].dfn < 0) {
+ tDfn = gDfn;
+ threadList[i].dfn = gDfn++;
+ for (pThread = i;;pThread = cThread) {
+ if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB3(GetCurrentContendedMonitor,
+ jvmti, threadList[pThread].thread, &monitor)))
+ return NSK_FALSE;
+ if (monitor == NULL)
+ break;
+ if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB3(GetObjectMonitorUsage,
+ jvmti, monitor, &usageInfo)))
+ return NSK_FALSE;
+ if (usageInfo.owner == NULL)
+ break;
+ for (cThread = 0; cThread < threads_count; cThread++) {
+ if (NSK_CPP_STUB3(IsSameObject, jni,
+ threadList[cThread].thread, usageInfo.owner))
+ break;
+ }
+ if (usageInfo.waiters != NULL) {
+ NSK_CPP_STUB2(Deallocate, jvmti,
+ (unsigned char*)usageInfo.waiters);
+ }
+ if (usageInfo.notify_waiters != NULL) {
+ NSK_CPP_STUB2(Deallocate, jvmti,
+ (unsigned char*)usageInfo.notify_waiters);
+ }
+ if (!NSK_VERIFY(cThread != threads_count))
+ return NSK_FALSE;
+ if (threadList[cThread].dfn < 0) {
+ threadList[cThread].dfn = gDfn++;
+ } else if (cThread == pThread) {
+ break;
+ } else {
+ numberOfDeadlocks++;
+ if (nsk_getVerboseMode()) {
+ if (!printDeadlock(jvmti, jni, cThread))
+ return NSK_FALSE;
+ }
+ break;
+ }
+ }
+ }
+ }
+
+ /* deallocate thread names */
+ for (i = 0; i < threads_count; i++) {
+ if (threadList[i].name != NULL) {
+ if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB2(
+ Deallocate, jvmti, (unsigned char*)threadList[i].name)))
+ return NSK_FALSE;
+ }
+ }
+
+ return NSK_TRUE;
+}
+
+/* ========================================================================== */
+
+/* agent algorithm */
+static void JNICALL
+agentProc(jvmtiEnv* jvmti, JNIEnv* jni, void* arg) {
+
+ /* wait for initial sync */
+ if (!nsk_jvmti_waitForSync(timeout))
+ return;
+
+ if (!findDeadlockThreads(jvmti, jni)) {
+ nsk_jvmti_setFailStatus();
+ return;
+ }
+
+ NSK_DISPLAY1("Total deadlocks found: %d\n", numberOfDeadlocks);
+ if (!NSK_VERIFY(numberOfDeadlocks > 0))
+ nsk_jvmti_setFailStatus();
+
+ /* resume debugee after last sync */
+ if (!nsk_jvmti_resumeSync())
+ return;
+}
+
+/* ========================================================================== */
+
+/* agent library initialization */
+#ifdef STATIC_BUILD
+JNIEXPORT jint JNICALL Agent_OnLoad_tc03t001(JavaVM *jvm, char *options, void *reserved) {
+ return Agent_Initialize(jvm, options, reserved);
+}
+JNIEXPORT jint JNICALL Agent_OnAttach_tc03t001(JavaVM *jvm, char *options, void *reserved) {
+ return Agent_Initialize(jvm, options, reserved);
+}
+JNIEXPORT jint JNI_OnLoad_tc03t001(JavaVM *jvm, char *options, void *reserved) {
+ return JNI_VERSION_1_8;
+}
+#endif
+jint Agent_Initialize(JavaVM *jvm, char *options, void *reserved) {
+ jvmtiEnv* jvmti = NULL;
+ jvmtiCapabilities caps;
+
+ /* init framework and parse options */
+ if (!NSK_VERIFY(nsk_jvmti_parseOptions(options)))
+ return JNI_ERR;
+
+ timeout = nsk_jvmti_getWaitTime() * 60000;
+ NSK_DISPLAY1("Timeout: %d msc\n", (int)timeout);
+
+ /* create JVMTI environment */
+ if (!NSK_VERIFY((jvmti =
+ nsk_jvmti_createJVMTIEnv(jvm, reserved)) != NULL))
+ return JNI_ERR;
+
+ /* add capabilities */
+ memset(&caps, 0, sizeof(caps));
+ caps.can_get_current_contended_monitor = 1;
+ caps.can_get_monitor_info = 1;
+ if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB2(AddCapabilities, jvmti, &caps)))
+ return JNI_ERR;
+
+ /* register agent proc and arg */
+ if (!NSK_VERIFY(nsk_jvmti_setAgentProc(agentProc, NULL)))
+ return JNI_ERR;
+
+ return JNI_OK;
+}
+
+/* ========================================================================== */
+
+#ifdef __cplusplus
+}
+#endif