/*

 * 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 WAIT_START 100

#define WAIT_TIME (2*60*1000)

static jvmtiEnv *jvmti = NULL;

static jvmtiCapabilities caps;

static jvmtiEventCallbacks callbacks;

static jrawMonitorID access_lock;

static jint result = PASSED;

static jthread thr_ptr = NULL;

static jint state[] = {

    JVMTI_THREAD_STATE_RUNNABLE,

    JVMTI_THREAD_STATE_BLOCKED_ON_MONITOR_ENTER,

    JVMTI_THREAD_STATE_IN_OBJECT_WAIT

};

    if (err != JVMTI_ERROR_NONE) {

        result = STATUS_FAILED;

    }

    }

    }

}

void JNICALL

ThreadStart(jvmtiEnv *jvmti_env, JNIEnv *env, jthread thread) {

    jvmtiError err;

    jvmtiThreadInfo thrInfo;

    err = jvmti_env->GetThreadInfo(thread, &thrInfo);

    if (err != JVMTI_ERROR_NONE) {

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

               TranslateError(err), err);

        result = STATUS_FAILED;

    }

    if (thrInfo.name != NULL && strcmp(thrInfo.name, "thr1") == 0) {

        thr_ptr = env->NewGlobalRef(thread);

    }

}

#ifdef STATIC_BUILD

JNIEXPORT jint JNICALL Agent_OnLoad_thrstat001(JavaVM *jvm, char *options, void *reserved) {

    return Agent_Initialize(jvm, options, reserved);

}

JNIEXPORT jint JNICALL Agent_OnAttach_thrstat001(JavaVM *jvm, char *options, void *reserved) {

    return Agent_Initialize(jvm, options, reserved);

}

JNIEXPORT jint JNI_OnLoad_thrstat001(JavaVM *jvm, char *options, void *reserved) {

    return JNI_VERSION_1_8;

}

#endif

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

    jint res;

    jvmtiError err;

    res = jvm->GetEnv((void **) &jvmti, JVMTI_VERSION_1_1);

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

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

        return JNI_ERR;

    }

    err = jvmti->GetPotentialCapabilities(&caps);

    if (err != JVMTI_ERROR_NONE) {

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

               TranslateError(err), err);

        return JNI_ERR;

    }

    err = jvmti->AddCapabilities(&caps);

    if (err != JVMTI_ERROR_NONE) {

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

               TranslateError(err), err);

        return JNI_ERR;

    }

    err = jvmti->GetCapabilities(&caps);

    if (err != JVMTI_ERROR_NONE) {

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

               TranslateError(err), err);

        return JNI_ERR;

    }

    err = jvmti->CreateRawMonitor("_access_lock", &access_lock);

    if (err != JVMTI_ERROR_NONE) {

               TranslateError(err), err);

        return JNI_ERR;

    }

    callbacks.VMInit = &VMInit;

    callbacks.ThreadStart = &ThreadStart;

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

    if (err != JVMTI_ERROR_NONE) {

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

               TranslateError(err), err);

        return JNI_ERR;

    }

    return JNI_OK;

}

JNIEXPORT void JNICALL

Java_nsk_jvmti_GetThreadState_thrstat001_checkStatus(JNIEnv *env,

        jclass cls, jint statInd) {

    jvmtiError err;

    jint thrState;

    jint millis;

    if (jvmti == NULL) {

        printf("JVMTI client was not properly loaded!\n");

        result = STATUS_FAILED;

        return;

    }

    if (thr_ptr == NULL) {

        printf("Missing thread \"thr1\" start event\n");

        result = STATUS_FAILED;

        return;

    }

    /* wait until thread gets an expected state */

    for (millis = WAIT_START; millis < WAIT_TIME; millis <<= 1) {

        err = jvmti->GetThreadState(thr_ptr, &thrState);

        if (err != JVMTI_ERROR_NONE) {

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

                statInd, TranslateError(err), err);

            result = STATUS_FAILED;

        }

        if ((thrState & state[statInd]) != 0) {

            break;

        }

    }

            thr_ptr, TranslateState(thrState), thrState);

    if ((thrState & state[statInd]) == 0) {

        printf("Wrong thread \"thr1\" (0x%p) state:\n", thr_ptr);

        printf("    expected: %s (%d)\n",

            TranslateState(state[statInd]), state[statInd]);

        printf("      actual: %s (%d)\n",

            TranslateState(thrState), thrState);

        result = STATUS_FAILED;

    }

}

JNIEXPORT jint JNICALL

Java_nsk_jvmti_GetThreadState_thrstat001_getRes(JNIEnv *env, jclass cls) {

    return result;

}

}