--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/test/serviceability/jvmti/GetOwnedMonitorInfo/libGetOwnedMonitorInfoTest.c Mon Aug 07 12:34:21 2017 -0700
@@ -0,0 +1,264 @@
+/*
+ * Copyright (c) 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
+ * 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 <stdio.h>
+#include <string.h>
+#include "jvmti.h"
+#include "jni.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifndef JNI_ENV_ARG
+
+#ifdef __cplusplus
+#define JNI_ENV_ARG(x, y) y
+#define JNI_ENV_PTR(x) x
+#else
+#define JNI_ENV_ARG(x,y) x, y
+#define JNI_ENV_PTR(x) (*x)
+#endif
+
+#endif
+
+#define PASSED 0
+#define FAILED 2
+
+#define TEST_CLASS "GetOwnedMonitorInfoTest"
+
+static volatile jboolean event_has_posted = JNI_FALSE;
+static volatile jint status = PASSED;
+
+static jint Agent_Initialize(JavaVM *jvm, char *options, void *reserved);
+
+static void ShowErrorMessage(jvmtiEnv *jvmti, jvmtiError errCode, const char *message) {
+ char *errMsg;
+ jvmtiError result;
+
+ result = (*jvmti)->GetErrorName(jvmti, errCode, &errMsg);
+ if (result == JVMTI_ERROR_NONE) {
+ fprintf(stderr, "%s: %s (%d)\n", message, errMsg, errCode);
+ (*jvmti)->Deallocate(jvmti, (unsigned char *)errMsg);
+ } else {
+ fprintf(stderr, "%s (%d)\n", message, errCode);
+ }
+}
+
+static jboolean CheckLockObject(JNIEnv *env, jobject monitor) {
+ jclass testClass;
+
+ testClass = (*env)->FindClass(env, TEST_CLASS);
+ if (testClass == NULL) {
+ fprintf(stderr, "MonitorContendedEnter: " TEST_CLASS " not found\n");
+ status = FAILED;
+ event_has_posted = JNI_TRUE;
+ return JNI_FALSE;
+ }
+
+ return (*env)->IsInstanceOf(env, monitor, testClass);
+}
+
+JNIEXPORT void JNICALL
+MonitorContendedEnter(jvmtiEnv *jvmti, JNIEnv *env, jthread thread, jobject monitor) {
+ jvmtiError err;
+ jvmtiThreadInfo threadInfo;
+ jint monitorCount;
+ jobject *ownedMonitors;
+
+ if (CheckLockObject(env, monitor) == JNI_FALSE) {
+ return;
+ }
+
+ err = (*jvmti)->GetThreadInfo(jvmti, thread, &threadInfo);
+ if (err != JVMTI_ERROR_NONE) {
+ ShowErrorMessage(jvmti, err,
+ "MonitorContendedEnter: error in JVMTI GetThreadInfo");
+ status = FAILED;
+ event_has_posted = JNI_TRUE;
+ return;
+ }
+ err = (*jvmti)->GetOwnedMonitorInfo(jvmti, thread, &monitorCount, &ownedMonitors);
+ if (err != JVMTI_ERROR_NONE) {
+ ShowErrorMessage(jvmti, err,
+ "MonitorContendedEnter: error in JVMTI GetOwnedMonitorInfo");
+ status = FAILED;
+ event_has_posted = JNI_TRUE;
+ return;
+ }
+
+ printf("MonitorContendedEnter: %s owns %d monitor(s)\n",
+ threadInfo.name, monitorCount);
+
+ (*jvmti)->Deallocate(jvmti, (unsigned char *)ownedMonitors);
+ (*jvmti)->Deallocate(jvmti, (unsigned char *)threadInfo.name);
+
+ if (monitorCount != 0) {
+ fprintf(stderr, "MonitorContendedEnter: FAIL: monitorCount should be zero.\n");
+ status = FAILED;
+ }
+
+ event_has_posted = JNI_TRUE;
+}
+
+JNIEXPORT void JNICALL
+MonitorContendedEntered(jvmtiEnv *jvmti, JNIEnv *env, jthread thread, jobject monitor) {
+ jvmtiError err;
+ jvmtiThreadInfo threadInfo;
+ jint monitorCount;
+ jobject *ownedMonitors;
+
+ if (CheckLockObject(env, monitor) == JNI_FALSE) {
+ return;
+ }
+
+ err = (*jvmti)->GetThreadInfo(jvmti, thread, &threadInfo);
+ if (err != JVMTI_ERROR_NONE) {
+ ShowErrorMessage(jvmti, err,
+ "MonitorContendedEntered: error in JVMTI GetThreadInfo");
+ status = FAILED;
+ return;
+ }
+ err = (*jvmti)->GetOwnedMonitorInfo(jvmti, thread, &monitorCount, &ownedMonitors);
+ if (err != JVMTI_ERROR_NONE) {
+ ShowErrorMessage(jvmti, err,
+ "MonitorContendedEntered: error in JVMTI GetOwnedMonitorInfo");
+ status = FAILED;
+ return;
+ }
+
+ printf("MonitorContendedEntered: %s owns %d monitor(s)\n",
+ threadInfo.name, monitorCount);
+
+ (*jvmti)->Deallocate(jvmti, (unsigned char *)ownedMonitors);
+ (*jvmti)->Deallocate(jvmti, (unsigned char *)threadInfo.name);
+
+ if (monitorCount != 1) {
+ fprintf(stderr, "MonitorContendedEnter: FAIL: monitorCount should be one.\n");
+ status = FAILED;
+ }
+}
+
+JNIEXPORT jint JNICALL
+Agent_OnLoad(JavaVM *jvm, char *options, void *reserved) {
+ return Agent_Initialize(jvm, options, reserved);
+}
+
+JNIEXPORT jint JNICALL
+Agent_OnAttach(JavaVM *jvm, char *options, void *reserved) {
+ return Agent_Initialize(jvm, options, reserved);
+}
+
+JNIEXPORT jint JNICALL
+JNI_OnLoad(JavaVM *jvm, void *reserved) {
+ return JNI_VERSION_1_8;
+}
+
+static
+jint Agent_Initialize(JavaVM *jvm, char *options, void *reserved) {
+ jint res;
+ jvmtiError err;
+ jvmtiEnv *jvmti;
+ jvmtiCapabilities caps;
+ jvmtiEventCallbacks callbacks;
+
+ printf("Agent_OnLoad started\n");
+
+ res = JNI_ENV_PTR(jvm)->GetEnv(JNI_ENV_ARG(jvm, (void **) &jvmti),
+ JVMTI_VERSION_1);
+ if (res != JNI_OK || jvmti == NULL) {
+ fprintf(stderr, "Error: wrong result of a valid call to GetEnv!\n");
+ return JNI_ERR;
+ }
+
+ err = (*jvmti)->GetPotentialCapabilities(jvmti, &caps);
+ if (err != JVMTI_ERROR_NONE) {
+ ShowErrorMessage(jvmti, err,
+ "Agent_OnLoad: error in JVMTI GetPotentialCapabilities");
+ return JNI_ERR;
+ }
+
+ err = (*jvmti)->AddCapabilities(jvmti, &caps);
+ if (err != JVMTI_ERROR_NONE) {
+ ShowErrorMessage(jvmti, err,
+ "Agent_OnLoad: error in JVMTI AddCapabilities");
+ return JNI_ERR;
+ }
+
+ err = (*jvmti)->GetCapabilities(jvmti, &caps);
+ if (err != JVMTI_ERROR_NONE) {
+ ShowErrorMessage(jvmti, err,
+ "Agent_OnLoad: error in JVMTI GetCapabilities");
+ return JNI_ERR;
+ }
+
+ if (!caps.can_generate_monitor_events) {
+ fprintf(stderr, "Warning: Monitor events are not implemented\n");
+ return JNI_ERR;
+ }
+ if (!caps.can_get_owned_monitor_info) {
+ fprintf(stderr, "Warning: GetOwnedMonitorInfo is not implemented\n");
+ return JNI_ERR;
+ }
+
+ callbacks.MonitorContendedEnter = &MonitorContendedEnter;
+ callbacks.MonitorContendedEntered = &MonitorContendedEntered;
+
+ err = (*jvmti)->SetEventCallbacks(jvmti, &callbacks, sizeof(jvmtiEventCallbacks));
+ if (err != JVMTI_ERROR_NONE) {
+ ShowErrorMessage(jvmti, err,
+ "Agent_OnLoad: error in JVMTI SetEventCallbacks");
+ return JNI_ERR;
+ }
+
+ err = (*jvmti)->SetEventNotificationMode(jvmti, JVMTI_ENABLE,
+ JVMTI_EVENT_MONITOR_CONTENDED_ENTER, NULL);
+ if (err != JVMTI_ERROR_NONE) {
+ ShowErrorMessage(jvmti, err,
+ "Agent_OnLoad: error in JVMTI SetEventNotificationMode #1");
+ return JNI_ERR;
+ }
+ err = (*jvmti)->SetEventNotificationMode(jvmti, JVMTI_ENABLE,
+ JVMTI_EVENT_MONITOR_CONTENDED_ENTERED, NULL);
+ if (err != JVMTI_ERROR_NONE) {
+ ShowErrorMessage(jvmti, err,
+ "Agent_OnLoad: error in JVMTI SetEventNotificationMode #2");
+ return JNI_ERR;
+ }
+ printf("Agent_OnLoad finished\n");
+ return JNI_OK;
+}
+
+JNIEXPORT jint JNICALL
+Java_GetOwnedMonitorInfoTest_check(JNIEnv *env, jclass cls) {
+ return status;
+}
+
+JNIEXPORT jboolean JNICALL
+Java_GetOwnedMonitorInfoTest_hasEventPosted(JNIEnv *env, jclass cls) {
+ return event_has_posted;
+}
+
+#ifdef __cplusplus
+}
+#endif