/*

 * Copyright (c) 2007, 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"

#ifndef STANDALONE

#include "JVMTITools.h"

#endif

extern "C" {

#define THREAD_STATE_MASK ~(JVMTI_THREAD_STATE_SUSPENDED \

                            | JVMTI_THREAD_STATE_INTERRUPTED \

                            | JVMTI_THREAD_STATE_IN_NATIVE \

                            | JVMTI_THREAD_STATE_VENDOR_1 \

                            | JVMTI_THREAD_STATE_VENDOR_2 \

                            | JVMTI_THREAD_STATE_VENDOR_3)

static int g_ThreadState[] = {

    0,                                                 /* TS_NEW */

    JVMTI_THREAD_STATE_TERMINATED,                     /* TS_TERMINATED */

    JVMTI_THREAD_STATE_ALIVE

        | JVMTI_THREAD_STATE_RUNNABLE,                 /* TS_RUN_RUNNING */

    JVMTI_THREAD_STATE_ALIVE

        | JVMTI_THREAD_STATE_BLOCKED_ON_MONITOR_ENTER, /* TS_RUN_BLOCKED */

    JVMTI_THREAD_STATE_ALIVE

        | JVMTI_THREAD_STATE_IN_OBJECT_WAIT

        | JVMTI_THREAD_STATE_WAITING

        | JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT,     /* TS_RUN_WAIT_TIMED */

    JVMTI_THREAD_STATE_ALIVE

        | JVMTI_THREAD_STATE_IN_OBJECT_WAIT

        | JVMTI_THREAD_STATE_WAITING

        | JVMTI_THREAD_STATE_WAITING_INDEFINITELY,     /* TS_RUN_WAIT_INDEF */

    JVMTI_THREAD_STATE_ALIVE

        | JVMTI_THREAD_STATE_PARKED

        | JVMTI_THREAD_STATE_WAITING

        | JVMTI_THREAD_STATE_WAITING_INDEFINITELY,     /* TS_RUN_WAIT_PARKED_INDEF */

    JVMTI_THREAD_STATE_ALIVE

        | JVMTI_THREAD_STATE_PARKED

        | JVMTI_THREAD_STATE_WAITING

        | JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT,     /* TS_RUN_WAIT_PARKED_TIMED */

    JVMTI_THREAD_STATE_ALIVE

        | JVMTI_THREAD_STATE_SLEEPING

        | JVMTI_THREAD_STATE_WAITING

        | JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT,     /* TS_RUN_WAIT_SLEEPING */

};

static jvmtiEnv * g_ppJvmtiEnv = NULL;

static int g_waitTime = 1000;

jrawMonitorID g_waitMon; /* Monitor is used just for sleeping */

void reportError(const char * szErr, jvmtiError res) {

#ifndef STANDALONE

    printf("%s (%d: %s)\n", szErr, res, TranslateError(res));

#else

    printf("%s (%d)\n", szErr, res);

#endif

    fflush(stdout);

}

#ifdef STATIC_BUILD

JNIEXPORT jint JNICALL Agent_OnLoad_thrstat005(JavaVM *jvm, char *options, void *reserved) {

    return Agent_Initialize(jvm, options, reserved);

}

JNIEXPORT jint JNICALL Agent_OnAttach_thrstat005(JavaVM *jvm, char *options, void *reserved) {

    return Agent_Initialize(jvm, options, reserved);

}

JNIEXPORT jint JNI_OnLoad_thrstat005(JavaVM *jvm, char *options, void *reserved) {

    return JNI_VERSION_1_8;

}

#endif

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

    jvmtiError error;

    jint res;

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

    if (res != JNI_OK || !g_ppJvmtiEnv) {

        printf("Agent_OnLoad: Error: GetEnv returned error or NULL\n");

        return JNI_ERR;

    }

    error = g_ppJvmtiEnv->CreateRawMonitor("beast", &g_waitMon);

    if (error != JVMTI_ERROR_NONE) {

        reportError("Agent_OnLoad: error creating raw monitor", error);

        return JNI_ERR;

    }

    return JNI_OK;

}

JNIEXPORT void JNICALL

Java_nsk_jvmti_GetThreadState_thrstat005_setWaitTime(JNIEnv * pEnv, jclass klass, jint waitTime) {

    g_waitTime = waitTime;

}

JNIEXPORT jboolean JNICALL

Java_nsk_jvmti_GetThreadState_thrstat005_checkThreadState(JNIEnv * pEnv, jclass klass, jthread thread, jint stateIdx) {

    jint thrState;

    jint maskedThrState;

    int waitTime = 10;

    /* Repeat querying status until waitTime < g_waitTime */

    do {

        jvmtiError res = g_ppJvmtiEnv->GetThreadState(thread, &thrState);

        if (res != JVMTI_ERROR_NONE) {

            reportError("GetThreadState: unexpected error", res);

            return JNI_FALSE;

        }

        maskedThrState = thrState & THREAD_STATE_MASK;

        printf("GetThreadState = %x. Masked: %x. Must be: %x\n", thrState, maskedThrState, g_ThreadState[stateIdx]);

        fflush(stdout);

        if (maskedThrState == g_ThreadState[stateIdx])

            return JNI_TRUE;

        printf("checkThreadState: wait %d ms\n", waitTime);

        fflush(stdout);

            return JNI_FALSE;

        }

        waitTime <<= 1;

    } while (waitTime < g_waitTime);

    return JNI_FALSE;

}

}