/*

 * Copyright (c) 2003, 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 <stdio.h>

#include <stdlib.h>

#include <string.h>

#include <jvmti.h>

#include "agent_common.h"

#include "nsk_tools.h"

#include "JVMTITools.h"

#include "jvmti_tools.h"

extern "C" {

#define STATUS_FAILED 2

#define PASSED 0

#define MEM_SIZE 1024

static jvmtiEnv *jvmti = NULL;

static jvmtiEventCallbacks callbacks;

static jvmtiCapabilities caps;

static volatile jint result = PASSED;

static volatile int gcstart = 0;

unsigned char *mem;

static void rawMonitorFunc(jvmtiEnv *jvmti_env, const char *msg) {

    jrawMonitorID _lock;

    NSK_DISPLAY1("%s: creating a raw monitor ...\n",

        msg);

    if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB3(CreateRawMonitor,

            jvmti_env, "_lock", &_lock))) {

        result = STATUS_FAILED;

        NSK_COMPLAIN1("TEST FAILED: %s: unable to create a raw monitor\n\n",

            msg);

        return;

    }

    NSK_DISPLAY1("CHECK PASSED: %s: raw monitor created\n",

        msg);

    NSK_DISPLAY1("%s: entering the raw monitor ...\n",

        msg);

    if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB2(RawMonitorEnter,

            jvmti_env, _lock))) {

        result = STATUS_FAILED;

        NSK_COMPLAIN1("TEST FAILED: %s: unable to enter the raw monitor\n\n",

            msg);

    }

    else {

        NSK_DISPLAY1("CHECK PASSED: %s: the raw monitor entered\n",

            msg);

        NSK_DISPLAY1("%s: waiting the raw monitor ...\n",

            msg);

        if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB3(RawMonitorWait,

                jvmti_env, _lock, (jlong)10))) {

            result = STATUS_FAILED;

            NSK_COMPLAIN1("TEST FAILED: %s: unable to wait the raw monitor\n\n",

                msg);

        }

        NSK_DISPLAY1("CHECK PASSED: %s: the raw monitor waited\n",

            msg);

        NSK_DISPLAY1("%s: notifying a single thread waiting on the raw monitor ...\n",

            msg);

        if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB2(RawMonitorNotify,

                jvmti_env, _lock))) {

            result = STATUS_FAILED;

            NSK_COMPLAIN1("TEST FAILED: %s: unable to notify single thread\n\n",

                msg);

        }

        NSK_DISPLAY1("CHECK PASSED: %s: single thread notified\n",

            msg);

        NSK_DISPLAY1("%s: notifying all threads waiting on the raw monitor ...\n",

            msg);

        if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB2(RawMonitorNotifyAll,

                jvmti_env, _lock))) {

            result = STATUS_FAILED;

            NSK_COMPLAIN1("TEST FAILED: %s: unable to notify all threads\n\n",

                msg);

        }

        NSK_DISPLAY1("CHECK PASSED: %s: all threads notified\n",

            msg);

        NSK_DISPLAY1("%s: exiting the raw monitor ...\n",

            msg);

        if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB2(RawMonitorExit,

                jvmti_env, _lock))) {

            result = STATUS_FAILED;

            NSK_COMPLAIN1("TEST FAILED: %s: unable to exit the raw monitor\n\n",

                msg);

        }

        NSK_DISPLAY1("CHECK PASSED: %s: the raw monitor exited\n",

            msg);

    }

    NSK_DISPLAY1("%s: destroying the raw monitor ...\n",

        msg);

    if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB2(DestroyRawMonitor,

            jvmti_env, _lock))) {

        result = STATUS_FAILED;

        NSK_COMPLAIN1("TEST FAILED: %s: unable to destroy a raw monitor\n",

            msg);

        return;

    }

    NSK_DISPLAY1("CHECK PASSED: %s: the raw monitor destroyed\n",

        msg);

}

static void memoryFunc(jvmtiEnv *jvmti_env, const char *msg) {

    NSK_DISPLAY1("%s: allocating memory ...\n",

        msg);

    if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB3(Allocate,

            jvmti_env, MEM_SIZE, &mem))) {

        result = STATUS_FAILED;

        NSK_COMPLAIN1("TEST FAILED: %s: unable to allocate memory\n\n",

            msg);

        return;

    }

    else

        NSK_DISPLAY1("CHECK PASSED: %s: memory has been allocated successfully\n",

            msg);

    NSK_DISPLAY1("%s: deallocating memory ...\n",

        msg);

    if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB2(Deallocate,

            jvmti_env, mem))) {

        result = STATUS_FAILED;

        NSK_COMPLAIN1("TEST FAILED: %s: unable to deallocate memory\n\n",

            msg);

    }

    else

        NSK_DISPLAY1("CHECK PASSED: %s: memory has been deallocated successfully\n\n",

            msg);

}

/** callback functions **/

void JNICALL

GarbageCollectionFinish(jvmtiEnv *jvmti_env) {

    gcstart++;

    NSK_DISPLAY1(">>>> GarbageCollectionFinish event #%d received\n",

        gcstart);

    rawMonitorFunc(jvmti_env, "GarbageCollectionFinish");

    memoryFunc(jvmti_env, "GarbageCollectionFinish");

    NSK_DISPLAY0("<<<<\n\n");

}

void JNICALL

VMDeath(jvmtiEnv *jvmti_env, JNIEnv *env) {

    NSK_DISPLAY0("VMDeath event received\n");

    if (result == STATUS_FAILED)

        exit(95 + STATUS_FAILED);

}

/************************/

#ifdef STATIC_BUILD

JNIEXPORT jint JNICALL Agent_OnLoad_gcfinish001(JavaVM *jvm, char *options, void *reserved) {

    return Agent_Initialize(jvm, options, reserved);

}

JNIEXPORT jint JNICALL Agent_OnAttach_gcfinish001(JavaVM *jvm, char *options, void *reserved) {

    return Agent_Initialize(jvm, options, reserved);

}

JNIEXPORT jint JNI_OnLoad_gcfinish001(JavaVM *jvm, char *options, void *reserved) {

    return JNI_VERSION_1_8;

}

#endif

jint Agent_Initialize(JavaVM *jvm, char *options, void *reserved) {

    /* init framework and parse options */

    if (!NSK_VERIFY(nsk_jvmti_parseOptions(options)))

        return JNI_ERR;

    /* create JVMTI environment */

    if (!NSK_VERIFY((jvmti =

            nsk_jvmti_createJVMTIEnv(jvm, reserved)) != NULL))

        return JNI_ERR;

    /* add capability to generate compiled method events */

    memset(&caps, 0, sizeof(jvmtiCapabilities));

    caps.can_generate_garbage_collection_events = 1;

    if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB2(AddCapabilities,

            jvmti, &caps)))

        return JNI_ERR;

    if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB2(GetCapabilities,

            jvmti, &caps)))

        return JNI_ERR;

    if (!caps.can_generate_garbage_collection_events)

        NSK_DISPLAY0("Warning: generation of garbage collection events is not implemented\n");

    /* set event callback */

    NSK_DISPLAY0("setting event callbacks ...\n");

    (void) memset(&callbacks, 0, sizeof(callbacks));

    callbacks.VMDeath = &VMDeath;

    callbacks.GarbageCollectionFinish = &GarbageCollectionFinish;

    if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB3(SetEventCallbacks,

            jvmti, &callbacks, sizeof(callbacks))))

        return JNI_ERR;

    NSK_DISPLAY0("setting event callbacks done\nenabling JVMTI events ...\n");

    if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB4(SetEventNotificationMode,

            jvmti, JVMTI_ENABLE, JVMTI_EVENT_VM_DEATH, NULL)))

        return JNI_ERR;

    if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB4(SetEventNotificationMode,

            jvmti, JVMTI_ENABLE, JVMTI_EVENT_GARBAGE_COLLECTION_FINISH, NULL)))

        return JNI_ERR;

    NSK_DISPLAY0("enabling the events done\n\n");

    return JNI_OK;

}

}