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