0N/A/*
2362N/A * Copyright (c) 2004, Oracle and/or its affiliates. All rights reserved.
0N/A *
0N/A * Redistribution and use in source and binary forms, with or without
0N/A * modification, are permitted provided that the following conditions
0N/A * are met:
0N/A *
0N/A * - Redistributions of source code must retain the above copyright
0N/A * notice, this list of conditions and the following disclaimer.
0N/A *
0N/A * - Redistributions in binary form must reproduce the above copyright
0N/A * notice, this list of conditions and the following disclaimer in the
0N/A * documentation and/or other materials provided with the distribution.
0N/A *
2362N/A * - Neither the name of Oracle nor the names of its
0N/A * contributors may be used to endorse or promote products derived
0N/A * from this software without specific prior written permission.
0N/A *
0N/A * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
0N/A * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
0N/A * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
0N/A * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
0N/A * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
0N/A * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
0N/A * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
0N/A * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
0N/A * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
0N/A * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
0N/A * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
0N/A */
0N/A
4378N/A/*
4378N/A * This source code is provided to illustrate the usage of a given feature
4378N/A * or technique and has been deliberately simplified. Additional steps
4378N/A * required for a production-quality application, such as security checks,
4378N/A * input validation and proper error handling, might not be present in
4378N/A * this sample code.
4378N/A */
4378N/A
4378N/A
0N/A#include <stdio.h>
0N/A#include <stdlib.h>
0N/A#include <string.h>
0N/A
0N/A#include "jni.h"
0N/A#include "jvmti.h"
0N/A
0N/A#include "agent_util.h"
0N/A
0N/A#include "Monitor.hpp"
0N/A
0N/A/* Implementation of the Monitor class */
0N/A
0N/AMonitor::Monitor(jvmtiEnv *jvmti, JNIEnv *env, jobject object)
0N/A{
0N/A jvmtiError err;
0N/A jclass klass;
0N/A char *signature;
0N/A
0N/A /* Clear counters */
0N/A contends = 0;
0N/A waits = 0;
0N/A timeouts = 0;
0N/A
0N/A /* Get the class name for this monitor object */
0N/A (void)strcpy(name, "Unknown");
0N/A klass = env->GetObjectClass(object);
0N/A if ( klass == NULL ) {
0N/A fatal_error("ERROR: Cannot find jclass from jobject\n");
0N/A }
0N/A err = jvmti->GetClassSignature(klass, &signature, NULL);
0N/A check_jvmti_error(jvmti, err, "get class signature");
0N/A if ( signature != NULL ) {
0N/A (void)strncpy(name, signature, (int)sizeof(name)-1);
0N/A deallocate(jvmti, signature);
0N/A }
0N/A}
0N/A
0N/AMonitor::~Monitor()
0N/A{
0N/A stdout_message("Monitor %s summary: %d contends, %d waits, %d timeouts\n",
0N/A name, contends, waits, timeouts);
0N/A}
0N/A
1657N/Aint Monitor::get_slot()
1657N/A{
1657N/A return slot;
1657N/A}
1657N/A
1657N/Avoid Monitor::set_slot(int aslot)
1657N/A{
1657N/A slot = aslot;
1657N/A}
1657N/A
0N/Avoid Monitor::contended()
0N/A{
0N/A contends++;
0N/A}
0N/A
0N/Avoid Monitor::waited()
0N/A{
0N/A waits++;
0N/A}
0N/A
0N/Avoid Monitor::timeout()
0N/A{
0N/A timeouts++;
0N/A}