test/hotspot/jtreg/vmTestbase/nsk/jvmti/unit/functions/environment/JvmtiTest/JvmtiTest.c

/*
 * 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"

#ifdef __cplusplus
extern "C" {
#endif

#ifndef JNI_ENV_ARG

#ifdef __cplusplus
#define JNI_ENV_ARG(x, y) y
#define JNI_ENV_ARG1(x)
#define JNI_ENV_PTR(x) x
#else
#define JNI_ENV_ARG(x,y) x, y
#define JNI_ENV_ARG1(x) x
#define JNI_ENV_PTR(x) (*x)
#endif

#endif

#define JVMTI_ENV_ARG JNI_ENV_ARG
#define JVMTI_ENV_ARG1 JNI_ENV_ARG1
#define JVMTI_ENV_PTR JNI_ENV_PTR

#define JVMTI_ERROR_CHECK(str,res) if ( res != JVMTI_ERROR_NONE) { printf(str); printf("%d\n",res); return res;}
#define JVMTI_ERROR_CHECK_EXPECTED_ERROR(str,res,err) if ( res != err) { printf(str); printf("unexpected error %d\n",res); return res;}

#define JVMTI_ERROR_CHECK_VOID(str,res) if ( res != JVMTI_ERROR_NONE) { printf(str); printf("%d\n",res); iGlobalStatus = 2; }

#define JVMTI_ERROR_CHECK_EXPECTED_ERROR_VOID(str,res,err) if ( res != err) { printf(str); printf("unexpected error %d\n",res); iGlobalStatus = 2; }



jvmtiEnv *jvmti;
jint iGlobalStatus = 0;
static jvmtiCapabilities jvmti_caps;



int printdump = 0;


void debug_printf(char *fmt, ...) {
    va_list args;

    va_start(args, fmt);
    if (printdump) {
        vprintf(fmt, args);
    }
    va_end(args);
}

#ifdef STATIC_BUILD
JNIEXPORT jint JNICALL Agent_OnLoad_JvmtiTest(JavaVM *jvm, char *options, void *reserved) {
    return Agent_Initialize(jvm, options, reserved);
}
JNIEXPORT jint JNICALL Agent_OnAttach_JvmtiTest(JavaVM *jvm, char *options, void *reserved) {
    return Agent_Initialize(jvm, options, reserved);
}
JNIEXPORT jint JNI_OnLoad_JvmtiTest(JavaVM *jvm, char *options, void *reserved) {
    return JNI_VERSION_1_8;
}
#endif
jint Agent_Initialize(JavaVM * jvm, char *options, void *reserved) {
    jint res;
    jint count;
    char **properties;
    int i;

    if (options && strlen(options) > 0) {
        if (strstr(options, "printdump")) {
            printdump = 1;
        }
    }

    res = JNI_ENV_PTR(jvm)->
        GetEnv(JNI_ENV_ARG(jvm, (void **) &jvmti), JVMTI_VERSION_1_1);
    if (res < 0) {
        debug_printf("Wrong result of a valid call to GetEnv!\n");
        return JNI_ERR;
    }


    /* Add capabilities */
    res = JVMTI_ENV_PTR(jvmti)->GetPotentialCapabilities(JVMTI_ENV_ARG(jvmti, &jvmti_caps));
    JVMTI_ERROR_CHECK("GetPotentialCapabilities returned error", res);

    res = JVMTI_ENV_PTR(jvmti)->AddCapabilities(JVMTI_ENV_ARG(jvmti, &jvmti_caps));
    JVMTI_ERROR_CHECK("GetAddCapabilities returned error", res);


    res = JVMTI_ENV_PTR(jvmti)->GetSystemProperties(JVMTI_ENV_ARG(jvmti, &count), &properties);

    JVMTI_ERROR_CHECK("GetSystemProperties returned error", res);

    for (i=0; i< count; i++) {
        char *value;

        res = JVMTI_ENV_PTR(jvmti)->GetSystemProperty(JVMTI_ENV_ARG(jvmti, (const char *)properties[i]), &value);
        JVMTI_ERROR_CHECK("GetSystemProperty returned error", res);
        debug_printf(" %s    %s \n", properties[i], value);

        /* Only writeable properties returns JVMTI_ERROR_NONE. */
        res = JVMTI_ENV_PTR(jvmti)->SetSystemProperty(JVMTI_ENV_ARG(jvmti, (const char *)properties[i]), value);
        debug_printf("SetSystemProperty returned error %d\n", res);

     }

    return JNI_OK;
}


JNIEXPORT jint JNICALL
Java_nsk_jvmti_unit_functions_environment_JvmtiTest_GetResult(JNIEnv * env, jclass cls) {
    return iGlobalStatus;
}


#ifdef __cplusplus
}
#endif