/*

 *

 * 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.

 */

/*

 * This source code is provided to illustrate the usage of a given feature

 * or technique and has been deliberately simplified. Additional steps

 * required for a production-quality application, such as security checks,

 * input validation and proper error handling, might not be present in

 * this sample code.

 */

#include <stdio.h>

#include <stdlib.h>

#include <string.h>

#include "jni.h"

#include "jvmti.h"

#include "agent_util.h"

#include "Thread.hpp"

/* Implementation of the Thread class */

Thread::Thread(jvmtiEnv *jvmti, JNIEnv *env, jthread thread)

{

    jvmtiError      err;

    jvmtiThreadInfo info;

    /* Get and save the name of the thread */

    info.name = NULL;

    (void)strcpy(name, "Unknown");

    err = jvmti->GetThreadInfo(thread, &info);

    check_jvmti_error(jvmti, err, "get thread info");

    if ( info.name != NULL ) {

        (void)strncpy(name, info.name, (int)sizeof(name)-1);

        name[(int)sizeof(name)-1] = 0;

        deallocate(jvmti, info.name);

    }

    /* Clear thread counters */

    contends = 0;

    waits    = 0;

    timeouts = 0;

}

Thread::~Thread()

{

    /* Send out summary message */

    stdout_message("Thread %s summary: %d waits plus %d contended\n",

        name, waits, contends);

}

void Thread::monitor_contended_enter(jvmtiEnv* jvmti, JNIEnv *env,

             jthread thread, jobject object)

{

    contends++;

}

void Thread::monitor_wait(jvmtiEnv* jvmti, JNIEnv *env,

               jthread thread, jobject object, jlong timeout)

{

    waits++;

}

void Thread::monitor_waited(jvmtiEnv* jvmti, JNIEnv *env,

               jthread thread, jobject object, jboolean timed_out)

{

    if ( timed_out ) {

        timeouts++;

    }

}