/*

 * 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 <string.h>

#include "jvmti.h"

#include "agent_common.h"

#include "JVMTITools.h"

extern "C" {

#define PASSED 0

#define STATUS_FAILED 2

#define RAW_MONITORS_NUMBER 1024

static jvmtiEnv *jvmti = NULL;

static jvmtiEventCallbacks callbacks;

static jint result = PASSED;

static jboolean printdump = JNI_FALSE;

static jrawMonitorID monitors[RAW_MONITORS_NUMBER];

void JNICALL VMInit(jvmtiEnv *jvmti_env, JNIEnv *env, jthread thr) {

    jvmtiError err;

    char name[32];

    int i;

    if (printdump == JNI_TRUE) {

        printf(">>> VMInit event\n");

        printf(">>> creating %d raw monitors\n", RAW_MONITORS_NUMBER);

    }

    for (i = 0; i < RAW_MONITORS_NUMBER; i++) {

        sprintf(name, "RawMonitor-%d", i);

        err = jvmti->CreateRawMonitor(name, &monitors[i]);

        if (err != JVMTI_ERROR_NONE) {

            printf("(CreateRawMonitor#%d) unexpected error: %s (%d)\n",

                   i, TranslateError(err), err);

            result = STATUS_FAILED;

        }

    }

    if (printdump == JNI_TRUE) {

        printf(">>> entering %d raw monitors\n", RAW_MONITORS_NUMBER);

    }

    for (i = 0; i < RAW_MONITORS_NUMBER; i++) {

        err = jvmti->RawMonitorEnter(monitors[i]);

        if (err != JVMTI_ERROR_NONE) {

            printf("(EnterRawMonitor#%d) unexpected error: %s (%d)\n",

                   i, TranslateError(err), err);

            result = STATUS_FAILED;

        }

    }

    if (printdump == JNI_TRUE) {

        printf(">>> exiting %d raw monitors\n", RAW_MONITORS_NUMBER);

    }

    for (i = 0; i < RAW_MONITORS_NUMBER; i++) {

        err = jvmti->RawMonitorExit(monitors[i]);

        if (err != JVMTI_ERROR_NONE) {

            printf("(RawMonitorExit#%d) unexpected error: %s (%d)\n",

                   i, TranslateError(err), err);

            result = STATUS_FAILED;

        }

    }

    if (printdump == JNI_TRUE) {

        printf(">>> destroying %d raw monitors\n", RAW_MONITORS_NUMBER);

    }

    for (i = 0; i < RAW_MONITORS_NUMBER; i++) {

        err = jvmti->DestroyRawMonitor(monitors[i]);

        if (err != JVMTI_ERROR_NONE) {

            printf("(DestroyRawMonitor#%d) unexpected error: %s (%d)\n",

                   i, TranslateError(err), err);

            result = STATUS_FAILED;

        }

    }

}

#ifdef STATIC_BUILD

JNIEXPORT jint JNICALL Agent_OnLoad_rawmonexit001(JavaVM *jvm, char *options, void *reserved) {

    return Agent_Initialize(jvm, options, reserved);

}

JNIEXPORT jint JNICALL Agent_OnAttach_rawmonexit001(JavaVM *jvm, char *options, void *reserved) {

    return Agent_Initialize(jvm, options, reserved);

}

JNIEXPORT jint JNI_OnLoad_rawmonexit001(JavaVM *jvm, char *options, void *reserved) {

    return JNI_VERSION_1_8;

}

#endif

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

    jvmtiError err;

    jint res;

    if (options != NULL && strcmp(options, "printdump") == 0) {

        printdump = JNI_TRUE;

    }

    if (res != JNI_OK || jvmti == NULL) {

        printf("Wrong result of a valid call to GetEnv!\n");

        return JNI_ERR;

    }

    callbacks.VMInit = &VMInit;

    err = jvmti->SetEventCallbacks(&callbacks, sizeof(callbacks));

    if (err != JVMTI_ERROR_NONE) {

        printf("(SetEventCallbacks) unexpected error: %s (%d)\n",

               TranslateError(err), err);

        return JNI_ERR;

    }

    err = jvmti->SetEventNotificationMode(JVMTI_ENABLE,

            JVMTI_EVENT_VM_INIT, NULL);

    if (err != JVMTI_ERROR_NONE) {

        printf("Failed to enable JVMTI_EVENT_VM_INIT: %s (%d)\n",

               TranslateError(err), err);

        return JNI_ERR;

    }

    return JNI_OK;

}

JNIEXPORT jint JNICALL Java_nsk_jvmti_RawMonitorExit_rawmonexit001_check(JNIEnv *env, jclass cls) {

    jvmtiError err;

    char name[32];

    int i;

    if (printdump == JNI_TRUE) {

        printf(">>> native method call\n");

        printf(">>> creating %d raw monitors\n", RAW_MONITORS_NUMBER);

    }

    for (i = 0; i < RAW_MONITORS_NUMBER; i++) {

        sprintf(name, "RawMonitor-%d", i);

        err = jvmti->CreateRawMonitor(name, &monitors[i]);

        if (err != JVMTI_ERROR_NONE) {

            printf("(CreateRawMonitor#%d) unexpected error: %s (%d)\n",

                   i, TranslateError(err), err);

            result = STATUS_FAILED;

        }

    }

    if (printdump == JNI_TRUE) {

        printf(">>> entering %d raw monitors\n", RAW_MONITORS_NUMBER);

    }

    for (i = 0; i < RAW_MONITORS_NUMBER; i++) {

        err = jvmti->RawMonitorEnter(monitors[i]);

        if (err != JVMTI_ERROR_NONE) {

            printf("(EnterRawMonitor#%d) unexpected error: %s (%d)\n",

                   i, TranslateError(err), err);

            result = STATUS_FAILED;

        }

    }

    if (printdump == JNI_TRUE) {

        printf(">>> exiting %d raw monitors\n", RAW_MONITORS_NUMBER);

    }

    for (i = 0; i < RAW_MONITORS_NUMBER; i++) {

        err = jvmti->RawMonitorExit(monitors[i]);

        if (err != JVMTI_ERROR_NONE) {

            printf("(RawMonitorExit#%d) unexpected error: %s (%d)\n",

                   i, TranslateError(err), err);

            result = STATUS_FAILED;

        }

    }

    if (printdump == JNI_TRUE) {

        printf(">>> destroying %d raw monitors\n", RAW_MONITORS_NUMBER);

    }

    for (i = 0; i < RAW_MONITORS_NUMBER; i++) {

        err = jvmti->DestroyRawMonitor(monitors[i]);

        if (err != JVMTI_ERROR_NONE) {

            printf("(DestroyRawMonitor#%d) unexpected error: %s (%d)\n",

                   i, TranslateError(err), err);

            result = STATUS_FAILED;

        }

    }

    return result;

}

}